A concave mirror has a focal length of 5.0 cm. A candle is located at a distance of 8.0 cm from the mirror. Calculate the image distance.

Answers

Answer 1

Answer:

13 cm

Explanation:

13 cm is the image distance


Related Questions

you are driving your car around a roundabout when you get a flat tire and you decelerate at a constant rate to a stop. the diameter of the roundabout is 70 m m . it takes you 32 s s to come to a complete stop. while slowing down, you continue to drive in a circle and you stop at the same spot that you popped your tire. what must have been your speed before the pop?

Answers

Speed before the tire popped must have been 35.8 m/s. To calculate your speed before the tire popped, we will use the equation vf = vi + at. In this equation, vf is the final velocity (0 m/s), vi is the initial velocity, a is the acceleration (deceleration in this case), and t is the time.

Since we know the diameter of the roundabout, the time it took to stop, and the acceleration is constant, we can calculate the initial velocity as:

vi = vf + at
vi = 0 m/s + (-1.125 m/s2) * 32 s
vi = -35.8 m/s

So, your speed before the tire popped must have been 35.8 m/s.

Know more about speed

https://brainly.com/question/13943409

#SPJ11

a 47.0 kg stunt pilot who has been diving her airplane vertically pulls out of the dive by changing her course to a circle in a vertical plane.if the plane's speed at the lowest point of the circle is 96.0 m/s , what is the minimum radius of the circle so that the acceleration at this point will not exceed 4.00 g ?what is the apparent weight of the pilot at the lowest point of the pullout?

Answers

The minimum radius of the circle so that the acceleration at this point will not exceed 4.00 is 2304 m, and the apparent weight of the pilot at the lowest point of the pullout is 272.6 N.


The minimum radius of the circle.

The equation for centripetal acceleration is:

a = (v²)/r, where a is the centripetal acceleration, v is the velocity, and r is the radius of the circle.

The equation can be rearranged to solve for the radius of the circle,

r = (v²)/a.

Plugging in the given values, we get:

r = (96)² / 4.00g

r = 2304 m.



The apparent weight of the pilot.

The equation for the apparent weight of the pilot is

[tex]w_{app}[/tex] = mg - m* [tex]a_{centripetal}[/tex], where [tex]w_{app}[/tex] is the apparent weight, m is the mass of the pilot, g is the acceleration due to gravity, and [tex]a_{centripetal}[/tex] is the centripetal acceleration.

Plugging in the given values, we get [tex]w_{app}[/tex] = (47.0)(9.8) - (47.0)(4) = 272.6 N.



Therefore, the minimum radius of the circle is 2304 m, and the apparent weight of the pilot is 272.6 N.

To know more about acceleration, refer here:

https://brainly.com/question/30499732#

#SPJ11

An electron is accelerated through a potential difference V. Write the expression for its
final speed, if it was initially at rest

Answers

The final speed of an electron accelerated through a potential difference V, starting from rest, is given by the expression [tex]v = 5.93 \times 10^7 \times \sqrt{V}[/tex], where v is in meters per second and V is in volts.

The kinetic energy gained by an electron accelerated through a potential difference V is given by:

K = eV

Where:

K is the kinetic energy gained by the electron (joules)

e is the charge of the electron ([tex]1.6 \times 10^{-19}[/tex]coulombs)

V is the potential difference across which the electron is accelerated (volts)

Since the electron was initially at rest, its initial kinetic energy was zero. Therefore, the final kinetic energy of the electron will be equal to the kinetic energy gained during acceleration:

K = eV

The final velocity of the electron can be calculated using the formula for kinetic energy:

K = (1/2)m[tex]v^2[/tex]

Where:

m is the mass of the electron[tex](9.11 \times 10^{-31} kg)[/tex]

v is the final velocity of the electron

Substituting the expression for K, we get:

eV = (1/2)m[tex]v^2[/tex]

Solving for v, we get:

v = √(2eV/m)

Substituting the values for e, V, and m, we get:

[tex]v =\sqrt{ [(2 \times 1.6 x 10^{-19} C \times V) / 9.11 \times 10^{-31} kg]}[/tex]

Simplifying this expression, we get:

[tex]v = 5.93 \times 10^7 \times \sqrt{V}[/tex]

Therefore, the final speed of an electron accelerated through a potential difference V, starting from rest, is given by the expression [tex]v = 5.93 \times 10^7 \times \sqrt{V}[/tex], where v is in meters per second and V is in volts.

for such more question on kinetic energy

https://brainly.com/question/25959744

#SPJ4

See Figure 1. What was the average yearly ice loss in 1980 versus 2010?

Answers

Between 1980 and 2010, there were significant differences in the average annual ice loss of glacial mass balance between different glaciers and geographical areas. This suggests that ice loss has risen since the 1980s.

What was the glacier mass balance's average annual ice loss between 1980 and 2010?

The average annual mass balance of reference glaciers globally between 1980 and 1999 was -0.50 m water equivalent (w.e.) per year, while between 2000 and 2017 it was -0.69 m w.e. per year, according to the World Glacier Monitoring Service. This shows a pattern of higher ice loss compared to the 1980s and 1990s in recent years. It's crucial to remember that this figure represents an average across a significant number of glaciers.

To learn more about ice loss in glaciers visit:

brainly.com/question/15685053

#SPJ1

Help me pleaseeeeeeee

Answers

Discovery Statement:

I discovered that my note-taking skills needed improvement when I attended a lecture by a guest speaker who spoke very quickly and used complex technical terms that were unfamiliar to me. I found it challenging to keep up with the speaker's pace and understand the content at the same time. As a result, I struggled to take accurate and organized notes, and ended up with a confusing and incomplete set of notes. When I reviewed my notes later, I realized that I had missed important points and failed to capture the essence of the lecture. This experience made me realize that I need to improve my note-taking skills, especially in situations where the content is complex and the speaker is fast-paced.

What is the Discovery Statement about?

My intention is to implement the following five note-taking strategies immediately to improve my skills:

Cornell Method - Divide notes into main ideas, supporting details, and summary. (Article: "Note-Taking Methods")Mind Maps - Use diagrams to visualize connections between ideas. (Article: "Visual Note-Taking")Abbreviations - Create a system of abbreviations to save time while taking notes. (Article: "Note-Taking Strategies for College Students")Active Listening - Stay engaged with the speaker and ask questions to clarify information. (Article: "How to Take Better Notes in Class")Review and Revise - Review notes regularly and make revisions to improve understanding. (Article: "Effective Note-Taking Techniques")

Learn more about Discovery Statement on:

https://brainly.com/question/29538254

#SPJ1

See transcribed text below

MINDTAP

try: Transform Your Note-Taking

ms Journal Entry Transform your note taking

3

Q Search this course

0

Q

Question 1 of 1

Think back on the last few lectures you have attended. How would you rate your note-taking skills? As you complete this exercise, think of areas that need improvement.

1. Discovery Statement

First, recall a recent incident in which you had difficulty taking notes. Perhaps you were listening to an instructor who talked fast. Maybe you got confused and stopped taking notes altogether. Or perhaps you went to review your notes after class, only to find that they made no sense at all. Describe this incident in more detail, noting how it was challenging for you.

I discovered that...

X

2. Intention Statement

Now review this chapter to find at least five strategies that you can use right away to help you take better notes. In the space below, sum up each of those strategies in a few words, and note the title of the article where these strategies are explained.

2 Action Statement

Q Search

LM

A-Z

b

بین

9:19 PM

3/3/2023

a rock is thrown upward with a velocity of 11 meters per second from the top of a 44 meter high cliff, and it misses the cliff on the way back down. when will the rock be 10 meters from ground level? round your answer to two decimal places.

Answers

The rock will be 10 meters from the ground level after 2.63 seconds when the rock is thrown upward with velocity of 11m/s .

When the rock is thrown upward with a velocity of 11 m/s from the top of the 44 m high cliff, it will take approximately 4.00 seconds for the rock to reach the top of its trajectory and start heading back down.

The velocity of the rock on its way back down will be 11 m/s in the opposite direction. After 2.63 seconds, the rock will have travelled a distance of 10 m from the ground level.

#SPJ11

For more reference of velocity from ground https://brainly.com/question/27526920

Object X of mass m0 travels to the right with a velocity v0. Object Y of mass 2m0 moves to the left at 2v0, as shown in the figure. The objects collide and then stick together. What is the change in kinetic energy of the two-object system from immediately before the collision to immediately after the collision?


ATTACHMENT OF DIAGRAM BELOW. Ignore my calculations

Answers

The kinetic energy decreases by 3movo^2

Does the kinetic energy increase for an inelastic collision?

In an inelastic collision, kinetic energy is not conserved. Some of the initial kinetic energy of the system is converted into other forms of energy, such as heat, sound, or deformation energy, and is not available to do work on the system.

In fact, the total kinetic energy of the system usually decreases in an inelastic collision. This is because the objects involved in the collision stick together or deform upon impact, resulting in a loss of kinetic energy. The amount of energy lost depends on the specific properties of the objects and the nature of the collision.

Learn more about kinetic energy:https://brainly.com/question/26472013

#SPJ1

can one entangled particle be measured for momentum while the other entangled particle is measured for position?

Answers

According to the principles of quantum mechanics, the answer to the question, "Can one entangled particle be measured for momentum while the other entangled particle is measured for the position?" is no.

If you measure the position of one particle in an entangled pair, you are creating a definite outcome for that particle. By measuring the other particle's momentum, you are causing it to have a definite outcome. That, however, is incompatible with the fact that the two particles are entangled. Their correlation will be broken if this is done.

The position and momentum measurements are incompatible in quantum mechanics. If you want to measure the position of a particle, the uncertainty in the momentum of the particle must be large. Conversely, if you want to measure the momentum of a particle, the uncertainty in the position of the particle must be large.

Furthermore, measuring the position of a particle has a detrimental effect on the uncertainty in its momentum. Similarly, measuring the momentum of a particle has a detrimental effect on the uncertainty in its position. The measurement outcomes of two entangled particles are determined by correlations between them.

Learn more about momentum:

https://brainly.com/question/7538238

#SPJ11

Rank the capacitors on the basis of the charge stored on the positive plate. Rank from largest to smallest: To rank items as equivalent; overlap them: A) A = 4 cm ; C=8nF B) A = 2 cm? =8 nFC) A = 2 cm? =4 nF D) A = 4 cm? C = 2 nF E) A =1 cm? = 1ln F

Answers

According to the charge that is stored on the positive plate, the order is B, A, C, D, and E, from biggest to smallest.

The charge stored on the positive plate of a capacitor is given by Q = CV, where Q is the charge, C is the capacitance, and V is the voltage. Since the capacitors are connected in parallel, they all have the same voltage V. Therefore, the capacitor with the largest capacitance will have the largest charge stored on its positive plate.

Ranking the capacitors from largest to smallest based on their capacitances, we get:

B) A = 2 cm, C = 8 nF

A) A = 4 cm, C = 8 nF

C) A = 2 cm, C = 4 nF

D) A = 4 cm, C = 2 nF

E) A = 1 cm, C = 1 nF

Therefore, the ranking from largest to smallest based on the charge stored on the positive plate is: B, A, C, D, E.

To learn more about capacitors refer to:

brainly.com/question/17176550

#SPJ4

An organism that breaks down dead plants and animals, returning matter back into the soil, is called a

A.
herbivore.

B.
producer.

C.
competitor.

D.
decomposer.

Answers

Answer:

d. decomposer

Explanation:

they play a critical role in the flow of energythrough an ecosystem. They break apart dead organisms into simpler inorganic materials, making nutrients available to primary producers

Consider a collar of mass m sliding on a frictionless shaft, as depicted in figure[4]. The collar can slide along the shaft and is connected to a spring of spring constant k, the other end of which is connected to the pivot point o a distance l from the shaft. The unstretched length of the spring is l. (a) how many degrees of freedom are there in this problem? describe the constraints, though you do not have to use formal equations. (b) find the equation of motion for the collar. (c) find an expression for the normal force vector between the collar and shaft as a function of x

Answers

(a) There is only one degree of freedom in this problem since the collar can move along the shaft but cannot rotate. The constraints are that the distance between the collar and the pivot point is always equal to l, and the collar cannot move perpendicular to the shaft.

(b) The forces acting on the collar are the spring force and the gravitational force. Since the collar is sliding along a frictionless shaft, there is no frictional force. The equation of motion for the collar is given by:

m(d²x/dt²) = -k(x-l) - mg

where x is the displacement of the collar from its equilibrium position.

(c) The normal force between the collar and the shaft is perpendicular to the shaft and balances the component of the gravitational force that is perpendicular to the shaft. As the collar moves away from its equilibrium position, the spring force becomes unbalanced and the normal force changes accordingly. The normal force is given by:

N = mgcos(θ) + k(x-l)sin(θ)

where theta is the angle between the shaft and the vertical axis.

To learn more about force refer to:

brainly.com/question/13191643

#SPJ4

A block with a mass of 2 kg sitting at rest on ice is pulled by a rope. The block achieves a velocity of 3
m/s, 4 seconds later, at a point 6 meters to the right of its starting point. If the blockís acceleration
was constant and the friction between the ice and block is negligible, which of the following is the
amount of work done by the force of the rope as it pulled the block through the first 6 meters?
O 117.6 J
36 J
9J
12 J

Answers

The amount of work done by the force of the rope as it pulled the block through the 6 meters is 9J.

The kinetic energy of the block is given by the formula

K = [tex]\frac{1}{2}[/tex]m[tex]v^{2}[/tex]

where,

m = mass of the block

v = velocity

Initially, the block is at rest. After being pulled by rope for 4 seconds it has an initial velocity of 3 m/s. Therefore, its final initial velocity is

Kf = [tex]\frac{1}{2}[/tex](2 kg)[tex](3 m/s) ^{2}[/tex]= 9 J

change in kinetic energy

ΔK = Kf - Ki = 9 J - 0 J = 9 J

Therefore, The amount of work done by the force of the rope as it pulled the block through the 6 meters is 9J.

To learn more about, Kinetic energy

https://brainly.com/question/28109294

https://brainly.com/question/25959744

An object is moving to the right, and experiencing a net force that is directed to the right. The magnitude of the force is decreasing with time. The speed of the object is:A. increasingB. constant in timeC. decreasing

Answers

Answer:

The speed of the object is increasing.

F = M a       as long as the magnitude of the acceleration is acting towards the right there will be an acceleration towards the right

If ocean water did not move it would be hot in the _ region and frigid in the _ region

Answers

If ocean water did not move, it would be hot in the equatorial region and frigid in the polar regions.

Ocean currents are responsible for redistributing heat around the planet. Without these currents, the equatorial region would receive more sunlight and heat than it loses, resulting in an accumulation of heat in the water. On the other hand, the polar regions would lose more heat than they receive, resulting in frigid temperatures.

The rotation of the Earth also influences the movement of ocean water through the Coriolis effect. Without this effect, ocean currents would be less predictable, and their impact on climate and temperature distribution would be more severe. Therefore, ocean currents play a crucial role in regulating Earth's climate, and their disruption could have significant consequences for both marine life and global weather patterns.

To know more about frigid, here

brainly.com/question/19538832

#SPJ4

a water skier is pulled behied a boat by a rope the rope has a tension of 650 N and is at an angle of 27. what is the y compoent of the tension

Answers

Angle of 27 with the horizontal or vertical?
Assuming it’s horizontal,
Answer is 650sin27

Calculate how far a ball would be hit if it was hit at an angle of 25° and a velocity of 80 mph.

Answers

The ball would be hit if it was hit at an angle of 25° and a velocity of 80 mph, it will travel 1-8m.

What is velοcity ?

The definitiοn οf velοcity is the rate at which a bοdy mοves in a particular directiοn. Velοcity is the rate at which a distance changes in relatiοn tο time. A vectοr quantity with bοth magnitude and directiοn is velοcity.

What is mass ?

The amοunt οf matter in a bοdy is referred tο as its mass. The kilοgramme is the kilοgrams, which is the SI unit οf mass (kg). Mass is defined as: Mass = Density/Vοlume.

Therefοre, ball wοuld be hit if it was hit at an angle οf 25° and a velοcity οf 80 mph, it will travel 1-8m.

Learn more about velocity from the given link.

https://brainly.com/question/28187441

#SPJ1

2 Part question

Part 1. A 3.63 kg cat is sleeping on a couch which is 0.5 meters above the floor. Find the potential energy of the cat.

Part 2. While sleeping on the couch the cat (see problem 3 above) has a dream of being chased by the dog that lives in the apartment above the cat and as a result, falls to the floor (which takes 2 seconds) Find the kinetic energy of the cat.

Answers

The potential energy of the cat is 17.76 joules.

The kinetic energy of the cat just before hitting the ground is 84.59 joules.

How to solve for the potential energy

Part 1:

The potential energy of the cat can be found using the formula:

potential energy = mass x gravity x height

where the mass of the cat is 3.63 kg, gravity is 9.81 m/s², and height is 0.5 meters.

Substituting these values in the formula, we get:

potential energy = 3.63 kg x 9.81 m/s² x 0.5 m

potential energy = 17.76 joules

Therefore, the potential energy of the cat is 17.76 joules.

Part 2:

The kinetic energy of the cat just before hitting the ground can be found using the formula:

kinetic energy = 0.5 x mass x velocity²

To find the velocity of the cat just before hitting the ground, we can use the equation of motion:

height = (1/2) x acceleration x time² + initial velocity x time

where height is 0.5 meters, acceleration is gravity (9.81 m/s²), time is 2 seconds, and initial velocity is 0 m/s (since the cat starts from rest).

Rearranging this equation to solve for velocity, we get:

velocity = (height - (1/2) x acceleration x time²) / time

velocity = (0.5 - (1/2) x 9.81 x 2²) / 2

velocity = -4.905 m/s (the negative sign indicates that the velocity is downward)

Substituting the mass of the cat (3.63 kg) and the velocity (-4.905 m/s) in the formula for kinetic energy, we get:

kinetic energy = 0.5 x 3.63 kg x (-4.905 m/s)²

kinetic energy = 84.59 joules

Therefore, the kinetic energy of the cat just before hitting the ground is 84.59 joules.

Read more on kinetic energy here:https://brainly.com/question/8101588

#SPJ1

Why must the negative terminals of the batteries be connected on the same side of the parallel circuit and positive terminals on the other side

Answers

The negative terminals of batteries must be connected on the same side of a parallel circuit and positive terminals on the other side to ensure that the voltage across each branch of the circuit is the same and that the batteries share the load equally.

In a parallel circuit, each branch of the circuit provides a separate path for current to flow, and the voltage across each branch is the same. Connecting the negative terminals of the batteries on the same side and the positive terminals on the other side ensures that the voltage across each branch remains the same, as the voltage drop across each battery is identical.

If the batteries were connected with opposite polarity, the voltage across each branch would be different, and the battery with the higher voltage would take on a larger share of the load, leading to unequal discharge and potentially damaging the batteries. It is essential to connect the negative terminals of the batteries on the same side and the positive terminals on the other side to ensure that each battery shares the load equally.

To know more about parallel circuit, here

brainly.com/question/28444959

#SPJ4

three objects a b c are placed 0.50 m apart along a straight line. If a and b have equal masses of 10.0kg and c has a mass of 15.0kg, what is the net gravitational force on b due to a and c?

Answers

The net gravitational force on b due to a and c is 5.338 x 10^-8 N.

What is the net gravitational force?

The net gravitational force on b due to a and c can be calculated using the formula:

F = G (m1m2) / r^2

where;

F is the gravitational force, G is the gravitational constant (6.67 x 10^-11 N m^2/kg^2), m1 and m2 are the masses of the two objects, and r is the distance between them.

First, let's calculate the gravitational force between a and b:

F1 = G (m1m2) / r^2

= 6.67 x 10^-11 * (10.0 x 10.0) / (0.50/2)^2

= 1.067 x 10^-7 N

Next, let's calculate the gravitational force between b and c:

F2 = G(m2m3) / r^2

= 6.67 x 10^-11 (10.0 x  15.0) / (0.50/2)^2

= 1.67 x 10^-7 N

The net gravitational force on b due to a and c is the vector sum of these two forces:

Fnet = F2 - F1

= 1.67 x 10^-7 N - 1.067 x 10^-7 N

= 5.338 x 10^-8 N

Learn more about gravitational force here: https://brainly.com/question/27943482

#SPJ1

How long would it take for 300 C of electric charge to pass through an aluminum wire if the current through it is 0. 6

Answers

500 seconds (or 8 minutes and 20 seconds) for 300 C of electric charge to pass through an aluminum wire if the current through it is 0.6 A.

To answer this question, we need to use the formula:

Q = I × t

where:

Q is the electric charge in Coulombs (C)

I is the current in Amperes (A)

t is the time in seconds (s)

We can rearrange this formula to solve for t:

t = Q / I

Substituting the given values, we get:

t = 300 C / 0.6 A

t = 500 seconds

Therefore, it would take 500 seconds (or 8 minutes and 20 seconds) for 300 C of electric charge to pass through an aluminum wire if the current through it is 0.6 A.

for such more question on electric charge

https://brainly.com/question/2373424

#SPJ4

Answer it quickly please

Answers

The coefficient of the kinetic friction of the sand paper would be = 0.5. That is option C.

How to calculate the coefficient of the kinetic friction of sand paper?

To calculate the coefficient of the kinetic friction of the sand paper the slope of the sandpaper line is obtained. This is because slope of kinetic friction and normal force = coefficient of kinetic friction.

To calculate the slope = Y2 - Y1/ X2 - X1

Where Y2 = 3.3

Y 1 = 1.0

X2 = 6.9

X1 = 2

Slope = 3.3-1.0/6.9-2

= 2.3/4.9

= 0.5

Therefore the coefficient of the kinetic friction of the sand paper which is the slope of kinetic friction and normal force for the sandpaper line would be = 0.5.

Learn more about slope here:

https://brainly.com/question/29044610

#SPJ1

A bullet with a mass of 7.91 g and a speed of 352 m/s penetrates a tree horizontally to a depth of 4.86 cm. What is the frictional force?

Answers

The frictional force acting on the bullet is 16.08 N. The force produced when two surfaces slide past one another and make contact is known as frictional force.

How does frictional force work?

Friction is a force that prevents two solid objects from rolling or sliding over one another. Although frictional forces, such as the traction required to walk without slipping, may be advantageous, they can provide a significant amount of resistance to motion.

we need to use the equation for work done by friction.

The work done by friction is:

W = F_friction * d

F_friction = W / d

where F_friction is the frictional force.

To find the work done by friction, we need to use the kinetic energy equation:

KE = 1/2 * m * v^2

where KE = kinetic energy of the bullet, m = mass of the bullet, and v = velocity of the bullet.

W = KE

Substituting the values,

KE = 1/2 * m * v^2

KE = 1/2 * 0.00791 kg * (352 m/s)^2

KE = 0.782 J

So, the work done by friction is 0.782 J.

Now, we can use the given depth of penetration to find the distance over which the frictional force acts:

d = 0.0486 m

we can use the equation for the frictional force,

F_friction = W / d

F_friction = 0.782 J / 0.0486 m

F_friction = 16.08 N

To know more about the frictional force visit:

https://brainly.com/question/4618599

#SPJ4

The question is attached

Answers

Answer:

The answer is B.

Explanation:

It is clear that the substance will be in liquid state above its melting point and below its boiling point.

A) This is incorrect. The substance is above the melting point but it is also above the boiling point (0 is greater than -183)

B) This is your correct answer. The substance is above the melting point and also below the boiling point.

C) This is incorrect. The substance is below both the melting point and the boiling point.

D) This is incorrect. The substance is drastically below the melting and boiling point.

Therefore , the only correct answer for this question would be B.

Look carefully at this telescopic photo of the Moon. All the following statements are true. Which one is proved by the fact that the line dividing the dark and bright regions is not perfectly straight?
The Moon's surface is not perfectly smooth but rather has mountains and valleys.

Answers

Answer:

Yes you're correct

Explanation:

The Moon's surface is not perfectly smooth but rather has mountains and valleys. Imagine looking at a sponge at a certain angle  and put a dim flashlight behind the sponge. You can see that the grooves make it so its not a perfectly straight shadow.

The fact that the line dividing the dark and bright regions of the Moon is not perfectly straight proves that the Moon's surface is not perfectly smooth but rather has mountains and valleys.This is because the terrain of the Moon is comprised of mountains, craters, and valleys, meaning that the line separating the dark and bright regions will not be completely straight.

The irregularities of the terrain cause the line to appear wavy, and thus not completely straight. This tells us that the surface of the Moon is far from perfectly smooth.

To illustrate this further, a comparison can be drawn between the Moon and a billiard ball. If the Moon's surface were perfectly smooth, the line separating the dark and bright regions would be perfectly straight, just as if a billiard ball had been sliced in half. However, since the surface of the Moon is not perfectly smooth, the line appears wavy due to the irregularities of the terrain.

Know more about Moon here:

https://brainly.com/question/13538936

#SPJ11

Forces of 7.6N at 38 degrees and 11.8N at 143 degrees act at a point.Calculate the magnitude and direction of their resultant.

Answers

Answer:

Approximately [tex]12.3\; {\rm N}[/tex] at approximately [tex]106^{\circ}[/tex].

Explanation:

Assume the two given directions are measured with respect to the positive [tex]x[/tex] axis.

If a vector of magnitude [tex]\| a\|[/tex] is at an angle of [tex]\theta[/tex] from the positive [tex]x[/tex] axis, this vector can be written in the component form as:

[tex]\begin{aligned}\| a\|\begin{bmatrix}\cos(\theta) \\ \sin(\theta)\end{bmatrix}\end{aligned}[/tex];

Or equivalently:

[tex]\begin{aligned}\begin{bmatrix}\|a\|\, \cos(\theta) \\ \|a\|\, \sin(\theta)\end{bmatrix}\end{aligned}[/tex].

For example, the [tex]7.6\; {\rm N}[/tex] force is a vector with magnitude [tex]7.6\; {\rm N}[/tex] at a direction of [tex]38^{\circ}[/tex] from the positive [tex]x[/tex] axis. This vector can be represented as:

[tex]\begin{aligned} 7.6\, \begin{bmatrix}\cos(38^{\circ}) \\ \sin(38^{\circ})\end{bmatrix} &= \begin{bmatrix}7.6\, \cos(38^{\circ}) \\ 7.6\, \sin(38^{\circ})\end{bmatrix} \approx \begin{bmatrix}5.9889 \\ 4.6790 \end{bmatrix}\end{aligned}[/tex].

Similarly, the [tex]11.8\; {\rm N}[/tex] vector can be represented as:

[tex]\begin{aligned}11.8\, \begin{bmatrix}\cos(143^{\circ}) \\ \sin(143^{\circ})\end{bmatrix} &= \begin{bmatrix}11.8\, \cos(143^{\circ}) \\ 11.8\, \sin(143^{\circ})\end{bmatrix} \approx \begin{bmatrix}-9.4239 \\ 7.1014 \end{bmatrix}\end{aligned}[/tex].

To find the sum of the two vectors, take the sum of each component separately:

[tex]\begin{aligned}& \begin{bmatrix}5.9889 \\ 4.6790 \end{bmatrix} + \begin{bmatrix}-9.4239 \\ 7.1014\end{bmatrix} \\ =\; & \begin{bmatrix}5.9889 + (-9.4239)\\ 4.6790 + 7.1014\end{bmatrix} \\ \approx\; & \begin{bmatrix}-3.4350 \\ 11.780\end{bmatrix} \end{aligned}[/tex].

Apply the Pythagorean Theorem to find the magnitude of this vector sum:

[tex]\displaystyle \sqrt{(-3.4350)^{2} + (11.780)^{2}} \approx 12.271[/tex].

Note that the first component ([tex]x[/tex]-component) of this vector is negative, such that this vector would point to the left of the vertical axis. Since the second component ([tex]y[/tex]-component) of this vector is positive, this vector would point above the horizontal axis. Hence, the direction of this vector (relative to the positive [tex]x\![/tex]-axis) would be an angle between [tex]90^{\circ}[/tex] and [tex]180^{\circ}[/tex].

Divide the [tex]x[/tex]-component of this vector by its magnitude to find the cosine of the angle between this vector and the positive [tex]x\![/tex]-axis. Apply the inverse cosine function to find this angle:

[tex]\begin{aligned}\arccos \left(\frac{-3.4350}{12.271}\right) \approx 106^{\circ}\end{aligned}[/tex].

A car needs to generate 75. 0 hp in order to maintain a constant velocity of 18. 2 m/s on a flat road. What is the magnitude of the total resistive force acting on the car (due to friction, air resistance, etc. )

Answers

Answer:

the magnitude of the car is

F=307.9N

Explanation:

The expression for the power in terms of force and velocity is as follows;

P=Fv

Here, P is the power, F is the force and v is the velocity.

Rearrange the above expression to get the value of the force.

F=\frac{P}{v}

Convert power from horsepower to watt.

P=75.0 hp

P= (75)(745.7) W

P= 55,927.5 W

Put P= 55,927.5 W and v= 18.2 meter per second in the above expression.

F=\frac{55,927.5}{18.2}

F= 3072.9 N

Therefore, the magnitude of the force is F= 3072.9 N.

balance the chemical equation
N₂ + 02 → - N₂0​

Answers

The balanced form of the given chemical equation is as follows: 2N₂ + 0₂ → 2N₂0.

What is a balanced chemical equation?

A chemical equation in chemistry is a symbolic representation of a chemical reaction where reactants are represented on the left, and products on the right.

A chemical equation results in the formation of new substances called products from substances called reactants.

However, to obey the law of conservation of mass, the atoms of each element on both sides of the equation must be the same. This is referred to as a balanced chemical equation.

The balanced form of the reaction between nitrogen and oxygen gas is given above.

Learn more about balanced equation at: https://brainly.com/question/7181548

#SPJ1

assume you have two objects of the same mass m and radius r. one object is a thin hoop, and the other object is a solid cylinder. which object has a larger moment of inertia i?

Answers

For two objects of the same mass and radius, the one with more mass concentrated farther away from the axis of rotation will have a larger moment of inertia. Therefore, the moment of inertia of a solid cylinder is greater than that of a thin hoop of the same mass and radius.

The moment of inertia of a thin hoop of mass m and radius r is given by:

I_{hoop} = mr²

The moment of inertia of a solid cylinder of mass m and radius r is given by:

I_{cylinder} = (1/2)mr²

From these equations, the moment of inertia of a solid cylinder is greater than that of a thin hoop of the same mass and radius.

Therefore, a solid cylinder has a larger moment of inertia compared to a thin hoop.

To learn more about moment of inertia:

https://brainly.com/question/14460640

#SPJ11

What does the table suggest about the acceleration of the marble and why?

Answers

The table suggests that the acceleration of the marble increases steadily over time due to the increasing force being applied to it. This is because acceleration is directly proportional to the force applied, according to Newton's second law of motion (F = ma).

Newton's second law is a quantitative description of the changes that a force can produce on the motion of a body. It states that the time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it.

Newton's second law is often stated as F=ma, which means the force (F) acting on an object is equal to the mass (m) of an object times its acceleration (a). This means the more mass an object has, the more force you need to accelerate it. And the greater the force, the greater the object's acceleration.

For such more questions on  Newton's second law of motion:

brainly.com/question/19887955

#SPJ4

a student applies a horizontal force of 20.0 n to the top of a steering wheel. the steering wheel has a radius of 18 cm and a rotational inertia of 0.097 kgm2 . assuming the friction and any opposing torques are negligible, what is the initial angular acceleration of the steering wheel?

Answers

The initial angular acceleration of the steering wheel is 3.67 rad by s2.

The initial angular acceleration of the steering wheel can be calculated using the formula alpha = (F * R) by I, where F is the applied force, R is the radius of the wheel, and I is the rotational inertia.

In this case, F = 20.0 N, R = 0.18 m, and I = 0.097 kgm2. Substituting these values into the formula gives:

alpha = (20.0 N * 0.18 m) by 0.097 kgm2 = 3.67 rad by s2

Therefore, the initial angular acceleration of the steering wheel is 3.67 rad by s2.

Know more about initial angular acceleration

https://brainly.com/question/21278452

#SPJ11

Other Questions
THE CHANGE OF SEASON OCCURS DUE TO THE DISTANCE OF THE EARTH FROM SUN Read the passage and question carefully then select your answer.'Well, if I cannot keep Heathcliff for my friendif Edgar will be mean and jealous, I'll try to break their hearts by breaking my own. That will be a prompt way of finishing all, when I am pushed to extremity! But it's a deed to be reserved for a forlorn hope; I'd not take Linton by surprise with it. To this point he has been discreet in dreading to provoke me; you must represent the peril of quitting that policy, and remind him of my passionate temper, verging, when kindled, on frenzy. I wish you could dismiss that apathy out of that countenance, and look rather more anxious about me.'The stolidity with which I received these instructions was, no doubt, rather exasperating: for they were delivered in perfect sincerity; but I believed a person who could plan the turning of her fits of passion to account, beforehand, might, by exerting her will, manage to control herself tolerably, even while under their influence; and I did not wish to 'frighten' her husband, as she said, and multiply his annoyances for the purpose of serving her selfishness. Therefore I said nothing when I met the master coming towards the parlour; but I took the liberty of turning back to listen whether they would resume their quarrel together. He began to speak first.'Remain where you are, Catherine,' he said; without any anger in his voice, but with much sorrowful despondency. 'I shall not stay. I am neither come to wrangle nor be reconciled; but I wish just to learn whether, after this evening's events, you intend to continue your intimacy with''Oh, for mercy's sake,' interrupted the mistress, stamping her foot, 'for mercy's sake, let us hear no more of it now! Your cold blood cannot be worked into a fever: your veins are full of ice-water; but mine are boiling, and the sight of such chillness makes them dance.''To get rid of me, answer my question,' persevered Mr. Linton. 'You must answer it; and that violence does not alarm me. I have found that you can be as stoical as anyone, when you please. Will you give up Heathcliff hereafter, or will you give up me? It is impossible for you to be my friend and his at the same time; and I absolutely require to know which you choose.''I require to be let alone!' exclaimed Catherine, furiously. 'I demand it! Don't you see I can scarcely stand? Edgar, youyou leave me!'She rang the bell till it broke with a twang; I entered leisurely. It was enough to try the temper of a saint, such senseless, wicked rages! There she lay dashing her head against the arm of the sofa, and grinding her teeth, so that you might fancy she would crash them to splinters! Mr. Linton stood looking at her in sudden compunction and fear. He told me to fetch some water. She had no breath for speaking. I brought a glass full; and as she would not drink, I sprinkled it on her face. In a few seconds she stretched herself out stiff, and turned up her eyes, while her cheeks, at once blanched and livid, assumed the aspect of death. Linton looked terrified.'There is nothing in the world the matter,' I whispered. I did not want him to yield, though I could not help being afraid in my heart.'She has blood on her lips!' he said, shuddering.'Never mind!' I answered, tartly. And I told him how she had resolved, previous to his coming, on exhibiting a fit of frenzy. I incautiously gave the account aloud, and she heard me; for she started upher hair flying over her shoulders, her eyes flashing, the muscles of her neck and arms standing out preternaturally. I made up my mind for broken bones, at least; but she only glared about her for an instant, and then rushed from the room. The master directed me to follow; I did, to her chamber-door: she hindered me from going further by securing it against me.The exchange between Edgar and Catherine in this passage serves toGroup of answer choicesemphasize Heathcliff's personality traits that annoy Catherineestablish Catherine's extremely fragile mental stateforeshadow Catherine and Edgar's surprising divorcereveal Catherine's responsibility for Edgar's sudden illnessset in motion events that lead to the climax of the novel The pH of a solution is given by the formula pH=logH+, where H+ is the concentration of hydrogen ions in moles per liter in the solution. Lye has a pH of 12.13. Use this formula to find the hydrogen ion concentration, [H+]. Round to one decimal place if necessary. As a financial analyst at Deutsche Bank, you are analyzing how futres will be used to reduce the risk. It is March 31, 2021 now. A company knows that it will need to purchase 30,000 barrels of crude oil sometime in June. You have collected the following information about the futures contracts. The current May oil futures price is $25.00 per barrel and the current July oil futures price is $27. On June 11, the spot oil price is $28 per barrel and the company decides to take oil position (one oil futures contract =1,000 barrels) and July futures price is $29. a. What futures contract should be used for hedge purpose? (sample answer: May Futures; or July Futures) b. What will be the net cost of oil per barrel if you take a long position in the oil futures contracts on April 15, 2020? (Sample Answer: $25.50) Baxters Hardware has some followers on their social media account on Friday. On Saturday, the account gains 18 new followers. On Sunday, 20 people stop following the Baxters Hardware account. Baxters Hardware has 25 followers on Monday morning. The equation f + 18 - 20 = 25 represents the situation. Solve the equation. Be sure to show your work.Please answer quick!!! If isabella buys two goods and the prices of both goods decrease by 500 . Her income does not change, then A. slope of the budget constraint will decrease. B. budget constraint will shift outward in a parallel fashion. C. budget constraint will be unchanged. D. slope of the budget constraint will increase. I choose 10 consecutive numbers. if I exclude one of the numbers the remaining 9 sum to 2023 which number did I exclude? Need help on this multiple choice question true or false: in today's society, the words we choose, the images we portray, and the stereotypes we hold require us to be more sensitive than ever to the impact we have on others. Which object would most likely absorb sound Use the equation y = 7x to complete the table. What are the missing values ofy?O A. When x = 2, y = 16. When x = 4, y = 30. O B. When x = 2, y = 14. When x = 4, y = 28. C. When x = 2, y = 8. When x = 4, y = 22D. When x = 2, y = 12. When x = 4, y = 24. Let X be a normally distributed random variable. Given that themean is 2 and P(X < 2.24) = 0.7257, what is the variance?a. 0.5266b. None of the suggested answers are correctc. 0.6d. 0.4e. 0.1 11. Critically evaluate the viability of each of the following as an option ora plan B, in case you do not immediately gain acceptance at an HEI orplace of work. 11. 1Volunteering11. 4 Entrepreneurship11. 2 Part-time jobs11. 5 Informal jobs11. 3 Community work the basis for using a normal probability distribution to approximate the sampling distribution of the sample means and population mean is . a. the empirical rule b. chebyshev's theorem c. bayes' theorem d. the central limit theorem find the values of a, b, and c in the equation 5x^2-2=2x^2+10x+6 If electricity costs $0.18 per kwh, how much does it cost to run the air conditioner in the problem above?A)$5.76B)$7.87C)$9.45D)$12.12 tom and jerry are always fighting! finally they decide to go to mediation to see if a trained therapist can help them figure out a way to get along. the therapist asks jerry to explain what he sees as the motives and behaviors of his roommate tom. jerry starts to describe tom's motivations and behaviors, which is another was of describing which concept from this chapter? HELPPPPPPPPPPPPpppppppppppppppppppppppp URGENTTTTT!!!!!!!!!! please complete the chart with the correct angle measures(numbers 6-9 please!) Consider the following three bond quotes: a Treasury bond quoted at 105:27, a corporate bond quoted at 96. 40, and a municipal bond quoted at 100. 80. If the Treasury and corporate bonds have a par value of $1,000 and the municipal bond has a par value of $5,000, what is the price of these three bonds in dollars?