Calculate the potential difference to be maintain between two horizontal conducting plates separated by a distance of 10mm so that a small charged oil drop of mass 1.31x10-14 kg will remain in equilibrium. [charge on the oil drop = 6·4×10-¹⁹c] C​

Answers

Answer 1

Answer:

Explanation:

The potential difference required to maintain the equilibrium of a charged oil drop in a uniform electric field can be calculated using the following equation:

V = (mg)/(qE)

where V is the potential difference, m is the mass of the oil drop, g is the acceleration due to gravity, q is the charge on the oil drop, and E is the electric field strength.

We are given the mass of the oil drop (m = 1.31x10^-14 kg), the charge on the oil drop (q = 6.4x10^-19 C), and the separation between the plates (d = 10 mm = 0.01 m).

The electric field strength between two parallel plates separated by a distance d and with a potential difference V applied between them is given by:

E = V/d

Substituting this expression for E into the equation for V, we get:

V = (mg)/(qE) = (mgd)/(qV)

Rearranging this equation, we obtain:

V^2 = (mgd)/q

Substituting the given values, we get:

V^2 = [(1.31x10^-14 kg)(9.81 m/s^2)(0.01 m)]/(6.4x10^-19 C)

V^2 = 2.02x10^-5 V^2

Taking the square root of both sides, we obtain:

V = 0.0045 V

Therefore, the potential difference required to maintain the equilibrium of the charged oil drop is approximately 0.0045 volts.


Related Questions

A thermodynamic system consists of an ideal gas at an initial volume of 3.50 L and a pressure of 7.9 × 104 Pa. An external force performs 180 J of work as it compresses the gas at constant pressure. What is the new volume of the gas?

Answers

the new volume of the gas is 3.49 L when An external force performs 180 J of work as it compresses the gas at constant pressure.

An ideal gas is a theoretical gas comprised of numerous randomly moving point particles that do not interact with one another. The ideal gas notion is valuable because it obeys the ideal gas law, which is a simplified equation of state, and is susceptible to statistical mechanics analysis. Work is pressure times change in volume.

Given,

initial Volume V₁ = 3.5 L

initial pressure P = 7.9 × 10⁴ Pa

Work = 180J

Work W = PΔV

180 J = 7.9 × 10⁴ Pa × ( 3.5L - V₂ )

2.27 × 10⁻³ =  0.0035m³ - V₂

3.5 - 2.27 × 10⁻³  = V₂

V₂ = 3.49 L

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Can positive charges be liberated by the photoelectric effect?
yes
rarely
no
sometimes

Answers

Answer:

No, positive charges cannot be liberated by the photoelectric effect.

Explanation:

1. How might race and cohort factors affect your work with older adults?

2. What is common ageist microaggressions? What type of communication patterns can you keep watch for and try to avoid when working with older adults?
3. What are common factors to consider when working with an older adult identifying as LGBT?
4. What resiliencies might you look for when working with older adults ?

Answers

Always make an effort to understand what the older people are thinking or feeling by placing yourself in their position.

1) Practitioners must take multicultural competency into account when evaluating older persons. This takes into account not only the older adult's ethnic, racial, and cultural background but also other cohort factors including their level of health literacy and previous interactions with mental health professionals.

2) Communication abilities deteriorate subtly with regular ageing, at least in part as a result of changes in physical health, depression, and cognitive loss. Physiologic modifications in the voice, speaking, and hearing functions are brought on by ageing.

3) The primary concerns of older LGBT individuals include chronic health care, caregiving, financial security for long-term care, social isolation, resilience development, and knowing where to turn for reliable assistance.

4) Be compassionate. Always make an effort to understand what they are thinking or feeling by placing yourself in their position. According to my observations, seniors' fear of falling is the main barrier to exercise.

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Over which of the following time intervals is the net force on the object.

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it seems that the rest of the question is missing. Could you please provide the full question and any relevant context so that I can better understand and provide an accurate answer. I can provide the definition of net force and how to calculate it.

The net force is the total force acting on an object, taking into account the magnitude and direction of all the individual forces acting on it. It is also referred to as the resultant force.

The net force on an object can be calculated using Newton's second law of motion, which states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. Mathematically, this can be expressed as:

Net force = mass x acceleration

or

Fnet = ma

where Fnet is the net force, m is the mass of the object, and a is its acceleration.

To calculate the net force on an object, you first need to identify all the individual forces acting on it, including their magnitudes and directions. Then, you can use vector addition to find the net force, taking into account the direction of each force.

Hence, If the forces are acting in the same direction, you can simply add their magnitudes to find the net force. If they are acting in opposite directions, you subtract the smaller force from the larger force, and the direction of the net force is in the direction of the larger force. If the forces are acting at right angles to each other, you can use the Pythagorean theorem to find the magnitude of the net force, and trigonometry to determine its direction.

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A source of sound with a frequency of 620 Hz is
placed on a moving platform that approache
s a physics student at speed v; the student h
ears sound with a frequency f1. Then the so
urce of sound is held stationary while the stu
dent approaches it at the same speed v; the
student hears sound with a frequency of f2. ch
oose the correct statement.

(A) f1 =f2 ;both are greater than 620 Hz

(B) #1-12,;both are less than 620 Hz
(c) M>12>620 H2
(D) 12311>620 H2

Answers

The frequency of the sound heard by the student is given by the Doppler effect equation:

f = f0 (v + vs) / (v + vd)

where f0 is the frequency of the sound emitted by the source, vs is the speed of sound, vd is the speed of the detector (in this case, the student), and v is the relative velocity between the source and detector.

When the source is approaching the student, the relative velocity is the sum of the speed of the platform and the speed of sound, i.e., v = vplatform + vs. When the student is approaching the stationary source, the relative velocity is the difference between the speed of the student and the speed of sound, i.e., v = vd - vs.

Let's assume that vs = 340 m/s (the speed of sound), vplatform = v, and vd = -v (since the student is moving towards the source). Then, we get:

f1 = f0 (v + vs) / (v + vs) = f0

f2 = f0 (vd - vs) / (vd + vs) = f0 (1 - v / vs) = f0 (1 - v / 340)

Therefore, the correct statement is (D): f1 = f2 < f0 (less than 620 Hz).

CAN ANYONE PLEASE HELP!


One long wire lies along an x axis and carries a current of 36 A in the positive x direction. A second long wire is perpendicular to the xy plane, passes through the point (0,5.8 m, 0), and carries a current of 73 A in the positive z direction. What is the magnitude of the resulting magnetic field at the point (0, 2.0 m, 0)?

Answers

The resultant magnetic field magnitude at the position (0, 2.0 m, 0) is 1.9 x 10⁻⁵ T.

How to find resulting magnetic field?

The magnetic field due to each wire at point P will be:

B₁ = μ₀I₁/2πr₁ and B₂ = μ₀I₂/2πr₂

Where,

μ₀ = 4π x 10⁻⁷ T m/A is the permeability of free space,

I₁ = 36 A is the current in the first wire,

I₂ = 73 A is the current in the second wire,

r₁ = distance between point P and the first wire,

r₂ = distance between point P and the second wire.

As the first wire is along the x-axis, its magnetic field at point P will be purely in the y-direction. The magnitude of B₁:

B₁ = μ₀I₁/2πr₁ = (4π x 10⁻⁷ T m/A)(36 A)/(2π(2.0 m)) = 1.8 x 10⁻⁵ T

The second wire is perpendicular to the xy-plane, so its magnetic field at point P will be purely in the x-direction. The distance r₂ using the Pythagorean theorem:

r₂ = √(5.8 m)² + (2.0 m)² = 6.1 m

The magnitude of B₂:

B₂ = μ₀I₂/2πr₂ = (4π x 10⁻⁷ T m/A)(73 A)/(2π(6.1 m)) = 6.0 x 10⁻⁶ T

The resulting magnetic field at point P will be the vector sum of the magnetic fields due to each wire:

B = √(B₁² + B₂²) = √((1.8 x 10⁻⁵ T)² + (6.0 x 10⁻⁶ T)²) = 1.9 x 10⁻⁵ T

Therefore, the magnitude of the resulting magnetic field at the point (0, 2.0 m, 0) is 1.9 x 10⁻⁵ T.

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Respond to all of the following in a minimum of 175 words
- Visualization is a powerful tool to have in your motivation toolbox. For this week’s My Vision Board and Reflection Worksheet assignment, you will take time to visualize your goals, not just the outcome, but each step to get there. Do you see a relationship between the process and practice of visualizing and maintaining motivation? Explain how you perceive the relationship or lack of it.

-Self-discipline is taking personal responsibility of your willingness and desire to finish tasks and reach your goals. The readings discussed several ways to increase your level of self-discipline. Which of the strategies discussed this week do you think you will use to increase your level of self-discipline in your life? Share a bit about why you think those strategies will work best for you.

Answers

Visualizing your objectives aids in sustaining inspiration by making your ambitions more perceptible and attainable.

Why is this important?

By contemplating the actions required to reach a desired outcome, individuals can foster lucidity and guidance, thereby pleasing them with determination for moving forward. Additionally, focusing on the process of accomplishment through visualization helps divide the steps needed to attain those objectives, thus reducing their complexity, making it less menacing, and rendering them easier to achieve.

Various strategies towards increasing self-discipline were also proposed: setting apparent goals, creating schedules, sidestepping enticement, and practicing mindfulness amongst others.

Personally, I find that determining clear-cut aims and scheduling activities are the most productive tactics to pursue. This approach establishes definite targets and creates an environment that favors concentration whereby dedicating time for working towards set purposes becomes convenient.

This system constructs accountability while instilling discipline as daily progression is made toward target achievements during scheduled times - this encourages further motivation and commitment.

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Note that this prompt has to do with Vision Setting, motivation and Self Discipline.

What is the explanation for the above?

The connection between maintaining motivation and visualization is undeniable. Visualization involves the creation of a mental image that represents your desired outcome, allowing you to keep your eyes on the prize, which helps increase motivation levels.

Note that, breaking down the steps needed to achieve your goals through visualization can make the process less daunting while ensuring consistent progress towards success. Mental checkpoints where achievements are recognized further strengthen one's resolve, thus fueling motivation for even greater accomplishments.

Developing self-discipline is crucial and comes with various techniques for improving it. Optimizing productivity can sometimes be challenging for individuals like myself who struggle with distractions while working.

Fortunately, creating a detailed schedule has always been an effective solution for managing such situations. By factoring-in designated time slots within this timetable per individual tasks, focusing intently can be achieved without succumbing to environmental disturbances experienced in regular work environments.

To additionally promote personal drive during these sessions of focus-creation we should endeavor attainable objectives which will boost our overarching mission amid these intentional work segments.

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Betelgeuse has a surface temperature of 3500 k and is located 643 light-years away from Earth. The light intensity from betelgeuse at the ground is 9.88 times 10^-8 W/m^2. How large it radiates the effect of betelgeuse​

Answers

Betelgeuse has a surface area of roughly 8.98 × 10²¹ square meters.

How to calculate size of star?

The radiated power of a star is given by the Stefan-Boltzmann law:

P = σAT⁴

where P = power radiated,

A = surface area of the star,

T = surface temperature, and

σ = Stefan-Boltzmann constant.

To find the surface area of Betelgeuse, if the light intensity at a distance d from the star is I, the intensity at a distance 2d will be I/4.

Given that the intensity of light from Betelgeuse at a distance of 643 light-years is 9.88 × 10⁻⁸ W/m²:

I/4 = σAT⁴/(4πd²)

where d = distance to the star in meters.

Solving for A:

A = 4πd²I/(σT⁴)

Convert the distance to meters by multiplying by the number of meters in a light-year:

d = 643 light-years × (9.461 × 10¹⁵ meters/light-year) = 6.07 × 10¹⁸ meters

Substituting the given values into the equation:

A = 4π(6.07 × 10¹⁸ meters)²(9.88 × 10⁻⁸ W/m²)/(5.67 × 10⁻⁸ W/m²/K⁴)(3500 K)⁴

A ≈ 8.98 × 10²¹ m²

Therefore, the surface area of Betelgeuse is approximately 8.98 × 10²¹ square meters.

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Why do we know so much Earth's Composition?

A.Digging to the inner core
B.Looking at the Earth's Magnetic Field
C.Studying Seismic Waves

Answers

Answer:

C

Explanation:

Since we can't go to the center of Earth, we have to rely on indirect observations of the materials of the interior. The seismic waves are generated by earthquakes and explosions that travel through Earth and across its surface. Thanks to that, it reveals the structure of the interior of the planet. Thousands of earthquakes occur every year, and each one provides a glimpse of the Earth's interior.

C studying seismic waves

Complete the ray diagram below:

A convex lens is shown centered at 7 on a ruler that goes from 0 to 14 centimeters. The object is located at 4.5, and the focal points are at 5.5 and 8.5.


Describe the image characteristics (real or virtual, orientation, size).
Submit your completed ray tracing diagram as an image attachment to this question. Ensure your name and today's date are visible in the image capture.

Answers

The image is real, inverted, and smaller in size.

Based on the given information, we can use ray tracing to determine the characteristics of the image.

Draw the incident ray from the top of the object, parallel to the principal axis, that passes through the focal point on the opposite side of the lens.Draw the incident ray from the top of the object, passing through the center of the lens.Draw the refracted ray from the top of the object, passing through the focal point on the same side of the lens.Repeat the above steps for the bottom of the object.

The image is formed by the intersection of the refracted rays. In this case, the image is located between the lens and the focal point on the opposite side of the lens. Therefore, the image is real.

The refracted rays converge at a point below the principal axis, which means that the image is inverted.

Finally, the height of the image is smaller than the height of the object, indicating that the image is smaller in size.

Please refer to the attached image for the ray tracing diagram.

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A bungee jumper with mass 50.0 kg jumps from a high bridge. After arriving at his lowest point, he oscillates up and down, reaching a low point five more times in 28.0 s. He eventually comes to rest 27.0 m below the level of the bridge. Assume very little damping.

Estimate the spring constant of the bungee cord assuming SHM.
Estimate the unstretched length of the bungee cord assuming SHM.
Express your answer with the appropriate units.

Answers

The unstretched length of the bungee cord is  29.4 m.

Simple harmonic motion is a type of periodic motion in which the displacement of an object from its equilibrium position is directly proportional to the force acting on it and is always directed towards the equilibrium position. It is characterized by a sinusoidal pattern of motion and has many real-world applications, including in oscillations of springs and pendulums.

We can solve this problem by applying the principles of simple harmonic motion (SHM) to the bungee jumper's oscillations.

Let's begin by finding the period of oscillation, T. The time it takes for the bungee jumper to reach the lowest point and return to the same point is one period of oscillation. From the problem, we know that the bungee jumper completes 6 cycles (5 low points plus the initial jump) in 28.0 s. Therefore, the period of oscillation is:

T = 28.0 s / 6 = 4.67 s

Next, we can use the formula for the period of an object undergoing SHM to find the spring constant, k, of the bungee cord:

T = 2π √(m/k)

where m is the mass of the bungee jumper. Rearranging this formula to solve for k, we get:

k = (4π²m) / T²

Substituting the given values, we get:

k = (4π² × 50.0 kg) / (4.67 s)² = 360 N/m

So the spring constant of the bungee cord is approximately 360 N/m.

To find the unstretched length of the bungee cord, we can use the fact that the bungee jumper comes to rest 27.0 m below the level of the bridge. At this point, all of the potential energy from the initial jump has been converted into elastic potential energy stored in the bungee cord. Therefore, the total energy of the system is:

E = mgh = (1/2)kx²

where h is the height from which the bungee jumper initially jumped (we assume that there is no air resistance), and x is the unstretched length of the bungee cord.

Substituting the given values, we get:

(50.0 kg)(9.81 m/s²)(27.0 m) = (1/2)kx²

Solving for x, we get:

x = √[(2mgh)/k] = √[(2 × 50.0 kg × 9.81 m/s² × 27.0 m) / 360 N/m] ≈ 29.4 m

Hence, the unstretched length of the bungee cord is approximately 29.4 m.

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What is the velocity of a sound wave that travels 2500 m in 8.2 s.

Answers

Explanation:

V=lander f. where,

v is the velocity of the sound wave

f is the frequency of sound wave(Hz)

L is the wavelength

so we simply just divide 2500 by 8.2 that gives us 304.88ms-¹

hopefully I get this right!

explanation of the 3 newtons laws? at least 2 paragraphs please

Answers

Isaac Newton's three laws of motion are the foundation of classical mechanics and describe how objects move and interact with one another. Each of the laws provides a fundamental insight into the behavior of objects and their relationship with the forces that act on them.

Newton's first law of motion, also known as the law of inertia, states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force. In other words, objects tend to maintain their current state of motion unless a force acts upon them. This law helps to explain why it is more difficult to move a heavy object than a light one and why objects in motion tend to stay in motion.

Newton's second law of motion states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. Mathematically, this law can be expressed as F=ma, where F is the net force acting on an object, m is its mass, and a is its acceleration. This law helps to explain how forces affect the motion of objects and why heavier objects require more force to move or accelerate than lighter ones.

Newton's third law of motion states that for every action, there is an equal and opposite reaction. This law means that when two objects interact, the forces they exert on each other are equal in magnitude and opposite in direction. This law helps to explain why rockets work and why we are able to walk or run on the ground - the ground pushes back with an equal and opposite force to the force we apply to it.

Overall, these three laws of motion provide a comprehensive framework for understanding how objects move and interact with one another in the physical world. They are essential for describing and predicting the behavior of everything from tiny particles to massive celestial bodies.

A long jumper leaves the ground with an initial speed of 9.5m/s at an angle of 22degrees from the ground. Determine the time it takes for the long jumper to reach her maximum height of her jump.

Answers

The time it takes for the long jumper to reach her maximum height will be approximately 0.372 seconds .

To determine the time it takes for the long jumper to reach her maximum height, the vertical motion of the jumper separately.

The initial vertical velocity, v₀y, can be calculated by multiplying the initial speed, v₀, by the sine of the launch angle, θ:

v₀y = v₀sin(θ)

Plugging in the given values:

v₀ = 9.5 m/s (initial speed)

θ = 22° (launch angle)

We can convert the launch angle from degrees to radians, as the trigonometric functions in most programming languages (including Python, which we'll use later) take input in radians:

θ = 22° * (π/180) ≈ 0.384 radians

Substituting the values:

v₀y = 9.5 m/s * sin(0.384) ≈ 3.65 m/s

The maximum height of the jump occurs when the vertical velocity, vy, becomes zero. At that moment, the jumper is at the highest point of the jump before descending.

vy = v₀y + at

where a is the acceleration due to gravity, which is approximately 9.8 m/s² (assuming no air resistance).

Setting vy to zero and solving for t:

0 = v₀y + at

t = -v₀y / a

Substituting the values:

t = -3.65 m/s / 9.8 m/s² ≈ -0.372 seconds

Since time cannot be negative in this context, we discard the negative value and take the absolute value. Therefore, the time it takes for the long jumper to reach her maximum height is approximately 0.372 seconds .

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Can someone help me with my physics sheet? I don’t understand it.. thank you

Answers

Acceleration of the skydiver during the free fall is 4.13 m/s².

1) Mass of the skydiver, m = 83 kg

Weight, W = mg = 83 x 9.8

W = 813.4 N

Free fall acceleration is the acceleration that a body travelling in free fall experiences due to only the gravitational pull of the earth. This is the acceleration brought on by gravity.

Since there is no air resistance, the acceleration of the skydiver during the free fall is the acceleration due to gravity, g.

Freebody diagram is given in Fig.1.

2) Mass of the skydiver, m = 78 kg

Air resistance acting on him, F' = 470 N

mg - 470 = ma

813.4 - 470 = ma

a = 343.4/83

a = 4.13 m/s²

Freebody diagram is given in fig.2.

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A voltage of 32 V generates a work done of 2.10x10^-7 J. Calculate the charge.

Answers

The work done (W) by an electric field is given by the formula W = qV, where q is the charge and V is the voltage.

Rearranging the formula gives q = W/V.

Substituting the given values, we get:

q = (2.10 x 10^-7 J) / (32 V)

q = 6.56 x 10^-9 C

Therefore, the charge is 6.56 x 10^-9 C.

There are two resistors connected in parallel: R1-43 Ohms and R2-43 Ohms.
Determine the equivalent resistance. Round your answer to 2 significant digits only. For example, if the answer is 65.4 Ohms write 65.

Answers

The equivalence resistance rounded off to two significant digits is

22 Ohms.

How to find the equivalent resistance

The equation used to work out the equivalent resistance of two resistors in parallel is as follows:

1/Req = 1/R1 + 1/R2

When R1 and R2 are set at 43 Ohms, we can fill in the placed values like so:

1/Req = 1/43 + 1/43

Simplifying to reduce the equation

1/Req = 2/43

cross multiplying the sides of the equation:

2 x Req = 43

Isolating Req

Req = 43/2

Req = 21.5 Ohms

Req = 22 Ohms to 2 significant figures

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if I'm here, and you are not, what's the difference between the space of being here or not?
[tex]tobe \: or \\ nottobe[/tex]
seeing is believing.. joker said to??? on all the days I've been alone.. does anyone see me crying? ​

Answers

if I'm here, and you are not, then the difference between the space of being here or not is it presence itself. Space is a three-dimensional continuum containing positions and directions.

A three-dimensional continuum that contains locations and directions is called space. Physical space is frequently imagined in three linear dimensions in classical physics. Modern physicists often believe that it eventually becomes a part of spacetime, an unbounded continuum of four dimensions. It is believed that grasping the idea of space is essential to comprehending the physical cosmos. Philosophers dispute on whether it is a thing in and of itself, a connection between entities, or a component of a conceptual framework.

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A man is in a helicopter ascending vertically at constant rate of 24.5m/s accidentally drops a toy out the window when the helicopter is 120.0m above the ground. (g = 9.8m / s)

a. How long will it take the toy to reach the ground

b. What will its speed be when it hits the ground?​

Answers

It will take the toy  5.02 seconds to reach the ground, The speed at which the toy hits the ground is 49.0 m/s.

Free fall is the motion of an object falling solely under the influence of gravity. In free fall, the object experiences an acceleration of 9.8 m/s^2 downwards towards the ground (assuming no air resistance), regardless of its mass or size.

a. To determine the time it takes for the toy to reach the ground, we can use the formula for the height of an object in free fall:

h = (1/2)gt^2

Where h is the initial height, g is the acceleration due to gravity, and t is time.

At the instant the toy is dropped, its initial height above the ground is h = 120.0 m, and the acceleration due to gravity is g = 9.8 m/s^2. Thus, we can rearrange the formula to solve for time:

t = sqrt(2h/g)

t = sqrt(2(120.0 m)/(9.8 m/s^2)) = 5.02 s

So, it will take the toy approximately 5.02 seconds to reach the ground.

b. To find the speed at which the toy hits the ground, we can use the formula for final velocity in free fall:

v = sqrt(2gh)

Where v is the final velocity, g is the acceleration due to gravity, and h is the initial height. At impact, the initial height of the toy is 0 m. Therefore:

v = sqrt(2gh)

v = sqrt(2(9.8 m/s^2)(120.0 m))

v = 49.0 m/s

So, the speed at which the toy hits the ground is approximately 49.0 m/s.

Hence, The toy will fall to the earth in 5.02 seconds, hitting the ground at a speed of 49.0 m/s.

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In the figure four particles are fixed along an x axis, separated by distances d = 4.80 cm. The charges are 41 = +4e, q2=-e, 93 = +e, and q4 = +12e, with e = 1.60 × 10-19 C. What is the value of the net electrostatic force on (a) particle 1 and (b) particle 2 due to the other particles?

Answers

(a) Because the particles are all separated by the same distance, the distances for F13 and F14 are the same as for F12.

(b) Because particle 4 is three spacings distant from particle 2, the distance for F24 is 3d.

How to determine net electrostatic force?

To calculate the net electrostatic force on a given particle, calculate the electrostatic force due to each of the other particles and then add them vectorially.

(a) The electrostatic force between two particles with charges q₁ and q₂ separated by a distance r is given by Coulomb's law as:

F = (1/4πε₀) × |q₁q₂| / r²

where ε₀ is the electric constant.

Using this formula, calculate the electrostatic force on particle 1 due to particle 2, which is:

F12 = (1/4πε₀) × |q₁q₂| / d² = (1/4πε₀) × 4e × e / (0.048 m)²

Similarly, calculate the electrostatic force on particle 1 due to particle 3 and particle 4:

F13 = (1/4πε₀) × |q₁q₃| / d² = (1/4πε₀) × 4e × e / (0.048 m)²

F14 = (1/4πε₀) × |q₁q₄| / (2d)² = (1/4πε₀) × 4e × 12e / (0.096 m)²

The distances for F13 and F14 are the same as for F12 because the particles are all separated by the same distance.

Add the forces vectorially:

F1net = F12 + F13 + F14

The direction of the net force will depend on the signs of the charges and their relative positions.

(b) To find the net electrostatic force on particle 2 due to the other particles, use the same method.

F21 = F12 (since the force is equal and opposite)

F23 = (1/4πε₀) × |q₂q₃| / d² = (1/4πε₀) × e × e / (0.048 m)²

F24 = (1/4πε₀) × |q₂q₄| / (3d)² = (1/4πε₀) × e × 12e / (0.144 m)²

The distance for F24 is 3d because particle 4 is three spacings away from particle 2.

Add the forces vectorially:

F2net = F21 + F23 + F24

The direction of the net force will depend on the signs of the charges and their relative positions.

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Which sentence best describes what happens when you turn on a light? (1 point)

A. Potential energy is changed into kinetic energy.

B. Electrical energy is changed into light energy and thermal energy.

C. Light energy is created.

D. Chemical energy is changed into electrical energy and light energy.

Answers

B. Electrical energy is changed into light energy and thermal energy.

a) i) Calculate the change in length of a 1.5m long copper bar when its temp is raised from 303K to 353K . (3mks)

Answers

Answer:

the change in length of the copper bar is 1.26 x 10^-3 meters (or 1.26 millimeters).

Explanation:

The change in length of a copper bar can be calculated using the formula:

ΔL = L₀αΔT

where:

ΔL = change in length

L₀ = original length of the copper bar (1.5 m)

α = coefficient of linear expansion for copper (16.8 x 10^-6 K^-1)

ΔT = change in temperature (353 K - 303 K = 50 K)

Plugging in the values, we get:

ΔL = (1.5 m)(16.8 x 10^-6 K^-1)(50 K)

ΔL = 1.26 x 10^-3 m

A research paper which has been turned in for credit is a final product.
Please select the best answer from the choices provided
О т
OF

Answers

False. A research paper which has been turned in for credit is not a final product.

What is a research paper?

A research paper is a piece of academic writing that provides analysis, interpretation, and argument based on personal or assissted research in a thorough or detailed manner.

We can also define a research paper as a written document that gives the results of an individual or new research or study on a chosen subject.

This research paper is typically written by researchers,  or academia. Which is usually a process or a way of contributing to new knownledge.

Researchers often use research papers to document their findings and sometimes earn some recognitions or award from these researchers.

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a 60.0kg crate slides from rest at h(1)=1.46m down to a horizontal surface where it passes over a 1.60m patch .the rough patch has a kinetic friction coefficient of 0.34 an incline has 25.0 degrees .what is the maximum height the crate reach​

Answers

The maximum height the crate reaches is 0.856 m.

To determine the maximum height the crate reaches, we need to use the conservation of mechanical energy:

Initial potential energy = final kinetic energy + final potential energy + work done by friction

Let's calculate each term:

Initial potential energy:

PE₁ = mgh₁ = 60.0 kg * 9.81 m/s² * 1.46 m = 868.98 J

Final kinetic energy:

KE₂ = (1/2)mv², where v is the final velocity of the crate after passing over the rough patch.

To find v, we can use the work-energy principle:

Work done by friction = change in kinetic energy

F * d = (1/2)mv² - 0

where F is the force of kinetic friction and d is the distance over which the force acts.

F = μ_k * N, where N is the normal force acting on the crate.

Since the crate is on an incline, we need to find the components of the gravitational force and the normal force acting on it:

mgsinθ = 60.0 kg * 9.81 m/s² * sin(25.0°) = 243.2 N

mgcosθ = 60.0 kg * 9.81 m/s² * cos(25.0°) = 550.2 N

N = mgcosθ = 550.2 N

F = μ_k * N = 0.34 * 550.2 N = 187.07 N

Now we can solve for v:

187.07 N * 1.60 m = (1/2) * 60.0 kg * v² - 0

v = √(2 * 187.07 N * 1.60 m / 60.0 kg) = 2.47 m/s

Final kinetic energy:

KE₂ = (1/2)mv² = (1/2) * 60.0 kg * (2.47 m/s)² = 183.08 J

Final potential energy:

PE₂ = mgh₂

At the maximum height, the final velocity of the crate is zero, so all the final energy is potential energy. Therefore:

PE₂ = PE₁ - KE₂ - work done by friction

mgh₂ = 868.98 J - 183.08 J - 187.07 N * 1.60 m

Solving for h₂, we get:

h₂ = (868.98 J - 183.08 J - 187.07 N * 1.60 m) / (60.0 kg * 9.81 m/s²) = 0.856 m

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A 2.02-kg particle has a velocity (2.03 î − 2.96 ĵ) m/s, and a 2.94-kg particle has a velocity (0.91 î + 5.94 ĵ) m/s.
(a) Find the velocity of the center of mass.


î +
ĵ

m/s

(b) Find the total momentum of the system.


î +
ĵ

kg · m/s

Answers

(a)The velocity of the center of mass is (0.829 î + 2.261 ĵ) m/s. and  (b) the total momentum of the system is (6.79 î + 8.66 ĵ) kg · m/s.

Momentum is a measure of an object's motion and is the product of its mass and velocity. It is a vector quantity, meaning it has both magnitude and direction.

(a) The velocity of the center of mass can be found using the formula:

v_cm = (m1v1 + m2v2) / (m1 + m2)

where m1 and v1 are the mass and velocity of the first particle, and m2 and v2 are the mass and velocity of the second particle. Substituting the given values:

v_cm = (2.02 kg)(2.03 î − 2.96 ĵ) m/s + (2.94 kg)(0.91 î + 5.94 ĵ) m/s / (2.02 kg + 2.94 kg)

v_cm = (4.115 î + 11.242 ĵ) / 4.96

v_cm = 0.829 î + 2.261 ĵ m/s

So, the velocity of the center of mass is (0.829 î + 2.261 ĵ) m/s.

(b) The total momentum of the system can be found by adding the momentum of the two particles:

p_total = m1v1 + m2v2

Substituting the given values:

p_total = (2.02 kg)(2.03 î − 2.96 ĵ) m/s + (2.94 kg)(0.91 î + 5.94 ĵ) m/s

p_total = (4.115 î − 8.798 ĵ) kg · m/s + (2.67494 î + 17.4636 ĵ) kg · m/s

p_total = 6.78994 î + 8.6646 ĵ kg · m/s

So, the total momentum of the system is (6.79 î + 8.66 ĵ) kg · m/s.

Therefore,(a)The velocity of the center of mass is (0.829 î + 2.261 ĵ) m/s. and  (b) the total momentum of the system is (6.79 î + 8.66 ĵ) kg · m/s.

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Two point charges each carrying a charge of +3.5 E−6 C are located 3.5 meters away from each other.


How strong is the electrostatic force between the two points (k = 9.0 E9 Nm2/C2)?
Is this force a repulsive force or an attractive force?


Remember to identify all data (givens and unknowns), list equations used, show all your work, and include units and the proper number of significant digits to receive full credit.

Answers

Given:
Charge on each point, q = +3.5E-6 C
Distance between the points, r = 3.5 m
Coulomb's constant, k = 9.0E9 Nm²/C²

The equation for the electrostatic force between two point charges is given by:

F = k * (q1 * q2) / r^2

where F is the force between the charges, q1 and q2 are the magnitudes of the charges, r is the distance between the charges, and k is Coulomb's constant.

Substituting the given values, we get:

F = (9.0E9 Nm²/C²) * [(3.5E-6 C) * (3.5E-6 C)] / (3.5 m)²

F = 2.3E-2 N

Therefore, the electrostatic force between the two point charges is 2.3E-2 N.

Since both charges are positive, the electrostatic force between them is a repulsive force.

Answer: the answer is 0.009N

Explanation:   as we know,    force =KqQ/R^2

                                                   F= 9*10^9*3.5*10^-6*3.5*10^-6/(3.5)^2

                                                   F=9*10^-3N

Share an experience you've had with the bureaucracy. In thinking about that experience, how would you describe the bureaucracy? What characteristics of the bureaucracy did you observe in that experience? Please explain. (Refer to Weber's theory of bureaucracy in the module.)

Answers

Bureaucracy theory explains the basis of the systematic formation of any organization and ensures efficiency and economic effectiveness.

Bureaucracy is the theory proposed by Max Weber. It forms the ideal model for the management and administration of the organization and ensures its efficiency of organization into focus.

It includes six basic principles. They are Authority Hierarchy, Division of labor, impersonality, Career Orientation, Formal rules and regulations, and Selection process.

The characteristics of bureaucracy include: It can control and regulate the behavior of people in an organization. It is the organization that has the power to make decisions. The organizations have certain rules to follow by the people.

Bureaucracy is found in large organizations like governments and corporations. It has standardized methods, and procedures to practice. It doesn't allow any flexibility for the organization.

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An electron is accelerated from rest across the gap of a capacitor (two parallel plates charged -Q and +Q respectively). A hole in the top plate allows the electron to emerge with a constant velocity of v = 27 m/s. If the gap between the plates is d = 0.94 m, what is the magnitude of the electric field between the plates?

Answers

The magnitude of the electric field between the plates is 5.87 × 10^5 N/C.

The electron gains kinetic energy as it is accelerated across the gap of the capacitor. This energy is equal to the work done on the electron by the electric field between the plates of the capacitor. We can use this relationship to determine the magnitude of the electric field.

The kinetic energy gained by the electron can be expressed as:

K = (1/2)mv^2

where K is the kinetic energy, m is the mass of the electron, and v is its velocity. The work done on the electron by the electric field is given by:

W = qEd

where W is the work done, q is the charge of the electron, E is the electric field, and d is the distance between the plates.

Since the electron is negatively charged, it will be accelerated from the negative plate (-Q) to the positive plate (+Q) of the capacitor. The charge on an electron is -1.602 × 10^-19 C. Therefore, the work done on the electron is:

W = qEd = (-1.602 × 10^-19 C)(E)(0.94 m)

The kinetic energy gained by the electron is equal to the work done on it by the electric field, so:

K = W = (1/2)mv^2

Substituting the known values and solving for the electric field gives:

E = (2qK) / (md^2) = (2(-1.602 × 10^-19 C)(0.5m_e(27 m/s)^2)) / ((9.11 × 10^-31 kg)(0.94 m)^2)

where m_e is the mass of the electron.

E = 5.87 × 10^5 N/C

Therefore, the magnitude of the electric field between the plates is approximately 5.87 × 10^5 N/C.

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Diagrammatic Question: Look at the given picture and give the answer to the following questions: 1. What do you know about this experiment? What types of factors affects the photosynthesis process? a. iii. Write the names of A, B, C, and D. What types of precautions are taken for the experiment? Scientific Learning 14 DEN or vlizo D C B​

Answers

(i) To show that chlorophyll is necessary for photosynthesis.

ii) Starch test and potassium iodide are mainly used for the test.

iii) Variegated leaf/Coleus leaf (leaf having non-green and green regions)

iv) After performing the starch test, part A turns blue-black with Iodine solution and part B turns brown with the Iodine solution.

Factors that affect photosynthesis

The process of photosynthesis can be influenced by various elements, encompassing:

1. Illumination intensity: The generation of photosynthesis necessitates energy from light; hence, lighting strength is a crucial commodity. Plants possess a limit of tolerance in regards to the luminosity they receive, so excessive or insufficient amounts of light most likely lead to reduced rates of photosynthesis.

2. Levels of Carbon Dioxide: Carbon dioxide plays an essential role as it responds within the process of photosynthesis, making its environmental abundance consequential. Higher carbon dioxide volumes increase photosynthetic velocity while low capacities have a decremental effect on the reaction's rate.

3. Temperature: This chemical recation is quite temperature-sensitive. Elevated temperatures can instigate denaturation of enzymes involved in this intricate process whereas extremely cool conditions decrease reaction celerity.

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We studied various patterns in the periodic table. 1) The pattern involving atomic number 2) The pattern involving valence electrons 3) The pattern of families.

Describe ONE of these patterns in the space below. Write at least one full sentence.

Answers

Answer:

The pattern of families in the periodic table refers to the grouping of elements with similar properties into vertical columns, also known as groups.

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