what is the magnitude o the centripetal acelartion of the car as it goes around the cruve descibed in the passage

Answers

Answer 1

The amount of the car's centripetal acceleration as it follows the curve given in the paragraph is -v2/r = a.

What is force?

A force is an effect in physics that may modify the velocity of an item. A force can cause a mass item to change its velocity, or accelerate. Intuitively, force may be characterized as a push or a pull. A force is a vector quantity since it has both magnitude and direction. The term "force" has a specific meaning in science. At this level, it is quite acceptable to refer to a force as a push or a pull. A force is not something that an item possesses or possesses. Another item applies a force to another. The concept of a force is not restricted to living or non-living entities.

Here,

In general, Force = ma where m is mass and a is acceleration.  The specific form for Centripetal Force = -mv2/r.

Equate the two equations for Force:

-mv²/r = ma

-v²/r = a

The magnitude of the centripetal acceleration of the car as it goes around the curve described in the passage is -v²/r = a.

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Related Questions

A crane uses 19000 watts of power to lift a 6200 kg chunk of metal in a certain amount of time, how much
power will he use to do the same amount of work in three times the time?

Answers

The power required to do the same amount of work in three times the time is 19000 watts / 3 = 6333.33 watts.

What is power?

Power is a measure of the rate of energy transfer. It is the rate at which work is done or energy is converted from one form to another. Power is typically measured in watts, which is equal to one joule of energy per second. Power is an important concept in physics, as it can be used to calculate the amount of work done, the amount of energy transferred, or the rate of change of some other physical quantity. Power is also closely related to the concepts of force and energy.

Therefore, The power required to do the same amount of work in three times the time is 19000 watts / 3 = 6333.33 watts.

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suppose you use the southern cross to determine that the south celestial pole appears 40 degrees above your horizon. then you must be located at group of answer choices latitude 50 degrees south. latitude 40 degrees north. longitude 40 degrees. latitude 40 degrees south.

Answers

"Suppose you use the southern cross to determine that the south celestial pole appears 40 degrees above your horizon. Then you must be located at latitude 40 degrees south." The correct option is 4th.

The local sky's star heights are unaffected by longitude.

The celestial equator and celestial horizon would coincide. Now picture yourself on the Earth's equator, at 0° latitude. Here the celestial equator would pass through your zenith and the north celestial pole (NCP) would lie at the North Point of the horizon and have an altitude of 0°.

Degrees north (+) or south (-) of the celestial equator are used to measure declination. The Earth's Equator is projected onto the Celestial Sphere to create the Celestial Equator. By definition, the CE has a declination of 0 degrees.

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Select all options that predict the next steps that researchers will take after getting these results.repeat the experiment several times perform the study with more subjects test higher doses of the drug on patients recommend the drug to physicians

Answers

Following the receipt of these results, researchers will proceed to the control condition.

What is control condition?

A condition in an experiment or research design that does not entail exposure to the therapy or intervention being studied. Thus, introducing a control condition helps researchers to compare how things are in the presence of an independent variable to how things would have been if an independent variable had not been present. Participants in an experimental condition are given a treatment or experience, but those in a control condition are not. The major method by which researchers achieve this level of control over extraneous factors across conditions is known as random assignment, which refers to the use of a random procedure to choose which people are evaluated in which situations.

Here,

After receiving these data, researchers will move on to the control condition.

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two securities that have different risks and returns?a. standard deviationb. coefficient of variation

Answers

For the two securities that have distinct risks and returns, the appropriate measure is the A: standard deviation.

A standard deviation (symbol σ) is a measure of how disseminated the data is in relation to the mean. A low standard deviation indicates that data are clustered around the mean; while a high standard deviation shows that data are more spread out.

Standard deviation is used to measure and compare the two securities that have distinct risks and returns. So option A: standard deviation is the correct answer.

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approximately 5.4 million hybrid passenger vehicles have been sold in the united states since 1999. approximately 1.4 million plug-in electric passenger vehicles have been sold in the united states since 2010. assume the average energy stored in a hybrid vehicle battery is 1.5 kilowatt-hours (kwh ), and assume the average energy stored in a plug-in electric vehicle battery is 45 kwh .

Answers

The total energy stored in these vehicles in gigawatt-hours is 57.4 GWh.

Based on the given information, if 80% of the 5.4 million hybrid vehicles sold in the United States since 1999 are still in service, there are approximately 4.32 million hybrid vehicles currently in use. If the average energy stored in a hybrid vehicle battery is 1.5 kilowatt-hours (kWh), this means that the total energy stored in these vehicles is approximately 6.48 gigawatt-hours (GWh).

Similarly, if 90% of the 1.4 million plug-in electric vehicles sold in the United States since 2010 are still in service, there are approximately 1.26 million plug-in electric vehicles currently in use. If the average energy stored in a plug-in electric vehicle battery is 45 kWh, this means that the total energy stored in these vehicles is approximately 57.4 GWh.

Therefore, the total energy stored in the hybrid and plug-in electric vehicles still in service in the United States is approximately 63.88 GWh. This is a significant amount of energy that can be used for transportation and potentially for other energy needs as well.

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According to the TARGET acronym, which of the following is not a measure to use to foster a mastery-oriented environment

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According to the acronym TARGET, affiliation is not a strategy to support a mastery oriented environment.

Creating a mastery oriented environment is where students are actively engaged in the learning process, setting and achieving meaningful goals, and feeling a sense of accomplishment. TARGET is a useful acronym for that goal.

TARGET stands for:

Trust: Building trust between teacher and students is essential so that it increases the likelihood for taking risks and giving feedback.

Authenticity: Teachers must be authentic in their interactions with students. This means being genuinely interested and honest in teaching and assessment.

Respect: It is important to create an atmosphere of respect in the classroom. Respect should be shown to all students.

Growth Mindset: A growth mindset is essential and it means emphasizing effort and progress over ability and success.

Expectations: Teachers should set clear expectations for students, but be flexible in how these expectations are met.

Affiliation is not a measure for fostering a mastery-oriented environment.

It refers to the quality of being intimately connected to or allied with a certain individual, organization, party, business, etc.

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a teacher finds an old lightbulb in a supply room. the teacher asks a student to design a procedure to determine if the lightbulb is ohmic or nonohmic. the student plans to connect the light bulb to batteries of different emfemf and measure the potential difference across and the current through the lightbulb. which of the following is the best way to analyze the data to determine if the lightbulb is ohmic or nonohmic?

Answers

The correct answer is B) Graphing the potential difference across the lightbulb as a function of the current through the lightbulb to see if there is a linear relationship.

An ohmic material is one that has a linear relationship between the current flowing through it and the potential difference across it. The resistance of an ohmic material does not change with the current flowing through it.

Therefore, the best way to analyse the data to determine if the lightbulb is ohmic or nonohmic is to graph the potential difference across the lightbulb as a function of the current through the lightbulb. If the graph is a straight line, it indicates that the lightbulb is ohmic. If the graph is not a straight line, it indicates that the lightbulb is nonohmic.

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Complete Question:

A teacher finds an old lightbulb in a supply room. The teacher asks a student to design a procedure to determine if the lightbulb is ohmic or nonohmic. The student plans to connect the light bulb to batteries of different emf and measure the potential difference across and the current through the lightbulb. Which of the following is the best way to analyse the data to determine if the lightbulb is ohmic or nonohmic?

A) Calculating the resistance for each pair of potential difference and current measurements, and then averaging all of the resistance values.

B) Graphing the potential difference across the lightbulb as a function of current through the lightbulb to see if there is a linear relationship.

C) Graphing the power of the lightbulb as a function of the potential difference across the lightbulb to see if there is a linear relationship.

D) Averaging all of the values of the potential difference and averaging all the values of the current and then calculating an overall value for resistance based on averages

the acceleration of a particle is defined by the relation 1 , xa k e where k is a constant. knowing that the velocity of the particle is 9v m/s when 3x m and that the particle comes to rest at the origin, determine (a) the value of k, (b) the velocity of the particle when 2x m.

Answers

Determine (a) the value of k in light of the fact that the particle has a velocity of +9 m/s at x=-3 m and rests at the origin.

How fast are particles moving?

The speed of a particle—real or hypothetical—in a medium because it transmits a pulse is known as the particle velocity. The meter per second (m/s) is the metric unit for particle speed. Most of the time, this pressure wave is longitudinal, such as with noise, but it may also be transverse, similar to the vibration of the a tight string.

Why is a particle at rest important?

You could understand the phrase "A particle in repose prefers to stay at rest" to mean that what a particle that isn't moving relative to a certain context aware tends to remain stationary relative to those same things.

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the variation of pressure with density in a thick gas layer is given by , where c and n are constants. noting that the pressure change across a differential fluid layer of thickness dz in the vertical z-direction is given as , obtain a relation for pressure as a function of elevation z. take the pressure and density at z

Answers

This is a relation for pressure as a function of elevation z.

What is pressure?

Pressure is a measure of the force that is applied over a given area. It is expressed in units such as pounds per square inch, atmospheres, or pascals.

Let the pressure at z be denoted by P(z) and the density at z be denoted by ρ(z).  
From the given relation, we have
$$\frac{dP}{d\rho}= c\rho^n$$
The given relation for pressure change across a differential fluid layer of thickness dz in the vertical z-direction is given as
$$dP = -g \rho dz$$
where g is the acceleration due to gravity.  
Substituting for $dP/d\rho$ in terms of $\rho$ from the first expression and integrating both sides with respect to $z$, we get:
$$P(z) - P(0) = -g \int_0^z \rho^{n+1} dz + C $$
where C is a constant of integration. Since $P(0)$ denotes the pressure at z=0, it can be written as:
$$P(z) = -g \int_0^z \rho^{n+1} dz + P(0) $$
This is a relation for pressure as a function of elevation z.

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a force is applied to a block sliding along a surface (figure 2). the magnitude of the force is 15 n , and the horizontal component of the force is 4.5 n . at what angle (in degrees) above the horizontal is the force directed? express your answer in degrees to two significant figures.

Answers

When a force of size F = 15 N is observed at an angle from the horizontal, its horizontal and vertical components are denoted by F cos and F sin, respectively.

What of the following forces produces zero work when a block slides down a rough horizontal surface?

Because the block's motion as well as the direction of the frictional force are in opposition to one another, friction produces negative work. Frictional energy may also be zero. For instance, if we attempt to push an extremely heavy block across a rough surface, the block remains stationary.

What do you call horizontal forces?

The cycle's pace tends to slow down due to an opposing force known as air resistance force, which acts in the opposite direction. The pressure as well as the air drag force are both referred to as horizontal forces when the direction is taken into account.

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A mass is attached to a vertical spring and set into vibration. The highest point of the motion is Point A and the lowest point of the motion is Point B. At what position or positions in its motion is the object's potential energy at a maximum? (Consider the potential energy of the mass-Earth-spring system.)

Answers

Midway between A and B is the position in its motion when is the object's potential energy at a maximum.

A body's mass is an inherent quality. Before the understanding of the atom and particle physics, it was widely considered to be tied to the amount of matter present in a physical body. A body's mass doesn't quite alter at any point in time.

Simply put, a mass-Earth-spring system is a spring device with a block hanging or fastened to the open end of the spring. The duration of any item moving in a simple harmonic motion may typically be determined using this system.

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Under what conditions, if any, will the trajectory of a charged particle not follow a field line?

Answers

A charged particle will not follow a field line if it is subjected to an external force that is greater than the force of the electric field.

What is electric field?

Electric field is an area of influence created by an electric charge. It is a vector field that surrounds a charged particle or object and exerts a force on other charged particles or objects in its vicinity. Electric fields are created by the movement of electrons and protons, which are both components of atoms. The strength of an electric field is determined by the amount of charge present, as well as the distance from the source.

For example, if a charged particle is subjected to a strong magnetic field, it will experience a Lorentz force which can cause the particle to deviate from its original trajectory and follow a curved path instead of following the field line.

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Help me pleaseee!!
Would appreciate ^^
**BRAINLIST, thanks and
points***

The battery has an internal resistance of 2.50
4.1 Show that the resistance of the 6.2 V, 4.5 W lamp at its working potential difference
(pd) is about 9.

Look at photo for more info
4.2 The terminal pd across the battery is 6.2 V.
Calculate the emf of the battery.

rope
Pulleys P and M are frictionless so that the tension in the rope attached to A is equal to the weight of A
A weighs 35 N and the weight of moveable pulley M is negligible.

Calculate the tension in the horizontal cable C when the gate is closed.
tension
3.3 Pulley M is pulled to the left as the gate is opened.
10/36
Explain why this increases the tension in the horizontal cable C.

Answers

The resistance of working potential difference of the 6.2 V, 4.5 W lamp is 8.54 ohm. When terminal pd across the battery is 6.2 V, the emf of the battery is 8.01 V.

What is resistance?

The opposition that a substance provides to the flow of electric current is referred to as resistance. The uppercase letter R represents it. The ohm is the standard unit of resistance, which is sometimes written as a word and sometimes represented by the uppercase Greek letter omega. Resistance is a measure of an electrical circuit's resistance to current flow. Resistance is measured in ohms, which is represented by the Greek letter omega ().

Here,

r=2.5 ohm

V= 6.2 volts

P=4.5 watt

P=V²/R

R=V²/P

R=6.2*6.2/4.5

R=8.54 ohm that is about 9 ohm.

I=V/R

I=0.726 A

EMF=V+Ir

=6.2+0.726*2.5

=6.20+1.81

=8.01 volts

The resistance of the 6.2 V, 4.5 W lamp at its working potential difference is 8.54 ohm. The emf of the battery when terminal pd across the battery is 6.2 V is 8.01 V.

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follow the example below to write and equation and sketch a graphical model of energy in each situation

Answers

The Energy equation for the pendulum at the lowest position will be  E(total low) = KE(Low) + ThE(low) and for soccer at maximum height E(high) = KE(high) + PE(max).

For a pendulum, at the lowest point, all the potential energy is converted into kinetic energy and the pendulum motion reaches its maximum velocity. Ignored air resistance. Therefore, no heat energy is generated. This means that all potential energy is converted into kinetic energy. Taking drag into account, the final energy is the sum of thermal energy and kinetic energy, so the sum of the two equals the potential energy of the tip.

E(total low) = PE(low) + KE(low) + ThE(low)

PE(low) = 0

so, E(total low) = KE(Low) + ThE(low) = PE(high)

For a soccer ball, the ball has a horizontal velocity component at its highest point and reaches a certain height. The top speed is slower than the initial speed. The total energy at the tip is therefore equal to the sum of the kinetic and potential energies. As in the previous case, the thermal energy is missing because we ignored the resistor.

E(high) = KE(high) + PE(max)

Therefore, the Energy equation for the pendulum at the lowest position will be  E(total low) = KE(Low) + ThE(low) = PE(high) and for soccer at maximum height E(high) = KE(high) + PE(max).

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The complete question is:

follow the example below (the figure attached) to write an equation and sketch a graphical model of energy in each situation. Write down the expanded total energy equation in the case of the pendulum at tje low position and for the soccer ball at its maximum height. Also, make the pie chart diagram of different forms of energy (PE, KE, and ThE).

a student slowly adds mass to the top of block b. when a total mass m0 has been added to the top of block b, block a begins to accelerate across the tabletop. in a clear, coherent, paragraph-length response, explain in terms of the net force on block a why block a remained at rest even as mass was added to block b, but block a accelerates once a total mass m0 was added to block b.

Answers

As a result, the thread holding the two objects together is pushing on them both equally strongly but in different directions.

In this problem, a string connects the two objects, transferring the force of one object to the other. The force is exerted in a different direction while remaining the same magnitude by wrapping the string around a pulley. A string links object A and object B. Gravity will cause object B to fall downward, pulling on one end of the string it is attached to in the process. Newton's law of action-reaction predicts that object B will be pulled upward by this lower end of the string. Object A is attached to the string's other end on the opposite end. Object A is being pulled to the right by this end of the string. Item A is pulled upward by the string, and object B is pulled to the right. The pulley has altered the force's direction of application.

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consider the situation in which the objects collide but do not stick together. which of the following predictions is true about the center of mass of the two-object system immediately after the collision?

Answers

The prediction which is true about the center of mass of the two-object system immediately after the collision is option C. does not change.

The distinct location at which weighted precise location of the distributed mass adds to zero at any particular time is known as the centre of mass in physics. Here is where a force can be exerted to produce an accelerometers without also producing an angular momentum.

Momentum is conserved when there is collision among two objects . The ultimate momentum is indeed not zero because the beginning momentum is not. They can't indeed be at ease. One of the objects may be at rest following the collision.

The question is incomplete, find the complete question here

consider the situation in which the objects collide but do not stick together. which of the following predictions is true about the center of mass of the two-object system immediately after the collision?

A. it increases

B. it decreases

C. does not change

D. none of these

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an object is released from rest near the surface of the planet the velocity of the object as a function of time is expressed in the following equation vy = (-3 m/s2) t all frictional forces are considered to be negligible. what distance does the object fall 10s after it is release from rest? a. 3 m b. 30 m c. 150 m d. 500 m

Answers

The distance at which object falls is 150m.

Given,

The velocity of the object as a function of time is : [tex]v_{y} = (-3\frac{m}{s^{2} } )t[/tex]

We know that [tex]a = dv/dt[/tex] and [tex]a = v. dv/ds[/tex]

Using these two equations we get: [tex]ds = v .dt[/tex]

Where,

v = velocity function

a = acceleration

s = distance

t = time

To find distance we need to integrate i.e.

[tex]s= \int\limits^a_0 {-3t} \, dt[/tex]

Here a = upper limit = 10 sec (t)

So, [tex]s = \frac{-3t^{2} }{2}[/tex]

Putting t=10, we get s = 150m

So, the distance is 150 m.

Speed is defined as the rate of change of position of an object in any direction.Distance is the total movement of an object without any regard to direction. We can define distance as to how much ground an object has covered despite its starting or ending point.Time can be defined as the dimension based on which the evolution of any system takes place. It can be measured in terms of seconds, minutes, hours, days, weeks, months, and years.

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factoring in everything we currently know about the history of the universe, our best estimate for the age of the universe is [ select ] . additionally, some scientists speculate that our universe is not the only universe that exists, but the only one we can gather evidence about. this idea is called [ select ] .

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Factoring in everything we currently know about the history of the universe, our best estimate for the age of the universe is 13.8 billion years old. additionally, some scientists speculate that our universe is not the only universe that exists, but the only one we can gather evidence about. this idea is called Multiverse Theory .

The multiverse theory is the idea that there may be multiple universes existing in parallel to our own, with their own laws of physics, laws of nature, and potentially different versions of ourselves. The multiverse theory has been proposed by many scientists.

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A⃗ = 22x^ + (-14)y^, and B⃗ = 2.5x^ + 13y^. Express A⃗ −B⃗ in unit vector notation.

Answers

The unit vector notation in the given direction is [tex]0.58 \hat x + 0.81 \hat y[/tex].

What is vector quantity?

A physical quantity that has both directions and magnitude is referred to as a vector quantity.

A lowercase letter with a "hat" circumflex, such as "û," is used to denote a vector with a magnitude equal to one. This type of vector is known as a unit vector.

In terms of subtracting a vector, it works the same as adding the vector's opposite.

Given that:

[tex]\vec A = 22 \hat x + (-14)\hat y,\\\vec B = 2.5\hat x + 13\hat y.[/tex]

( two given vectors are written here.)

Therefore: the subtraction of these two vectors will be:

[tex]\vec A - \vec B = (= 22 \hat x + (-14)\hat y) - (2.5\hat x + 13\hat y)\\= 19.5\hat x - 27 \hat y[/tex]

Unit vector in that direction of vectors  is =

[tex]= \frac{19.5\hat x - 27 \hat y}{\sqrt{19.5^2 + (-27)^2} } \\= 0.58 \hat x + 0.81 \hat y[/tex]

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A sea If the determine 103,000 N Im² divor. density 35M 10301 H=10M total ko no ros belos Surface of the Sea be Sea water is 1.03g/cm²³3 and g=10Nig take atmospheric Pressure to be 103000.calculate total pressure


Answers

A sea or an ocean's water is known as seawater or salt water. Oceans around the world have an average salinity of 3.5% (35 g/L, 35 ppt, 600 mM).

What is the density of the sea?Fresh water has a density of 1 g/cm3 at 4 oC (see section 5.1), but adding salts and other dissolved substances raises the density of surface seawater to between 1.02 and 1.03 g/cm3. Seawater's density can be raised by lowering its temperature, raising its salinity, or raising the pressure.Oceans are frequently referred to as "seas" by people. Geographers define a sea as an area of the water that is entirely or partially contained by land.Density can be defined as a substance's weight in relation to its volume. A gramme per millilitre is about how dense water is, however this might vary depending on temperature or the things that are dissolved in it.

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What two types of simple machine make up this compound machine? Screw,incline,plane lever,wheel and axle screw lever lever pulley

Answers

The two types of simple machine make up this compound machine are  the screw and the lever.

What is the simple machine?

A screw is a simple machine that consists of a spiral groove or ridge, called a thread, wrapped around a cylinder or cone. When the screw is rotated, it can be used to hold two objects together or to lift an object by turning it into a threaded hole.

Therefore, A lever is a simple machine that consists of a rigid bar that pivots on a fixed point, called a fulcrum. A force applied to one end of the lever can be used to lift or move an object at the other end. Lever can be classified into three classes depending on the position of the load, effort and fulcrum.

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Below is an outline of Louis Pasteur's swan-neck flask experiment. What can you conclude from his results? Alr escapes from open end of flask. Microorganisms from air settie in bend. 88=-= Years Hours days 1 Broth storized air escapes Broth allowed to cool slowly- air enters 5 Broth stays store Indefinitely Bacteria multiply in broth 4 Flask tiled so that the sterile broth comes in contact with micro- organisms from air. Spontaneous generation is incorrect Only life can beget life Microbes can be found in the air Vital forces cannot travel up the swan-neck flask. Without it, nothing can survive in the broth Spontaneous generation is still a valid theory. The bacteria in the broth came from the broth itself

Answers

The term "spontaneous generation" is erroneous. Only life can give birth to more life. Airborne microbes can be detected.

What is experiment?

A scientific experiment is any method that uses measurements and tests to confirm or deny a theory. A hypothesis is a notion that looks to be true but has yet to be confirmed, from which a study might be created. A basic experiment often addresses a "What would happen if...?" cause-and-effect inquiry. For example, you're wondering if misting a plant with water helps it develop faster. You get a sense of how the plant grows without being misted and then compare it to how it grows after being misted.

Here,

The phrase "spontaneous generation" is incorrect. Only life can create more life. Microbes in the air can be detected.

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a student must conduct two experiments so that the inertial mass and gravitational mass of the same object can be determined. in the experiment to find the object's gravitational mass, the student ties one end of a string around the object with the other end tied to a spring scale so that the object can vertically hang at rest. in the experiment to find the object's inertial mass, the student uses a spring scale to pull the object, starting from rest, across a horizontal surface with a constant applied force such that frictional forces are considered to be negligible. in addition to the spring scale, the student has access to other measuring devices commonly found in a science laboratory. which of the following lists the essential measuring devices the student can use to collect the data necessary to find the object's gravitational and inertial mass?meterstick and timer
meterstick, timer, and motion director
meterstick, timer, motion director, and mass balance
meterstick, timer, motion detector, mass balance, and protractor

Answers

In order to collect data to find an object's gravitational and inertial mass, meterstick and timer are two essential measuring devices that are needed.

Using the angular frequency value (w), inertial mass (m) is determined using the equation below:

w=√k/m

The equation above is solved for mass (m).

m=k/w²

To calculate the gravitational mass, following equation is used:

force gravity =  G  ×  M  ×  m / radius²

Where: mass, m, is 1 kilogram; mass of the Earth, M, is 6.0 × 1024 kilogram; the radius of the Earth (separation of masses), r, is 6.4 × 106 m; and G is 6.67 × 10⁻¹¹ newton square metrekilogram-2}.

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Homework and les...
A charged particle, labeled A, is located at the midpoint between
two other charged particles, labeled B and C, as shown. Particles
B and C are fixed in place (they cannot move). The sign of the
charges on all three particles is the same. When particle A is
released, it starts drifting toward C. What can be determined
from this behavior?
A
The charge on A is larger than the charge on B.
The charge on A is
larger than the charge on C.
The charge on B is larger than the charge on C.
The charge on C is larger than the charge on B.
The charge on B is larger than the charge on A.
B

Answers

Answerr:

A person who thinks all the time
Do I write the answer
Explanation

Methane and oxygen combine in a synthesis reaction. true or false

Answers

Answer:

True.

Explanation:

A synthesis reaction is a type of chemical reaction in which two or more substances combine to form a new compound. Methane (CH4) and oxygen (O2) can combine in a synthesis reaction to form carbon dioxide (CO2) and water (H2O). This reaction is exothermic and is the basis of combustion reactions.

The balanced equation for this reaction is:

CH4 + 2O2 -> CO2 + 2H2O

In this reaction, one methane molecule and two oxygen molecules combine to form one carbon dioxide molecule and two water molecules.

It's worth mentioning that methane is considered a greenhouse gas, and the combustion of methane releases carbon dioxide and water vapor into the air, which contribute to global warming and climate change.

The answer is true you can even look up on the web… I will also give you a site where you can learn more…

After release into the synaptic cleft, the neurotransmitter dopamine is actively taken up by the cells via specific dopamine transporters. The drug cocaine interferes with this process and is therefore called a reuptake inhibitor. The inhibition of the transporter at a certain cocaine concentration is qualitatively represented in the following graph. Based on this graph, which of the following describes the effect of cocaine on the kinetics of dopamine reuptake by the transporter?
A) In the presence of cocaine, the maximal rate of transport (Vmax) is unaffected, but the apparent affinity of the transporter for dopamine is reduced.
B) In the presence of cocaine, the maximal rate of transport (Vmax) is reduced, but the apparent affinity of the transporter for dopamine is unaffected.
C) In the presence of cocaine, the maximal rate of transport (Vmax) is enhanced, but the apparent affinity of the transporter for dopamine is unaffected.
D) In the presence of cocaine, both the maximal rate of transport (Vmax) and the apparent affinity of the transporter for dopamine are enhanced.
E) In the presence of cocaine, both the maximal rate of transport (Vmax) and the apparent affinity of the transporter for dopamine are unaffected, but the transporter is nevertheless inhibited.

Answers

In the presence of cocaine, maximum transport velocity (Vmax) is unaffected, but the transporter's apparent affinity for dopamine is reduced

Cocaine has psychomotor stimulating effects similar to amphetamines and related compounds. It increases transmitter concentrations at both noradrenergic and dopaminergic synapses and also acts as an anesthetic. Evidence of effects on cellular action potentials suggests that cocaine affects both fast Na+ channels and repolarizing K+, but not Ca2+ channels. Cocaine is not seen to have an affect on Vmax. But it is seen that dopamine transporters decrease its affinity for dopamine in presence of cocaine.

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lab manual and Ch. 2.7) Suppose you hold a ball at a height of 10.0 m and drop it from rest. It takes 1.40 seconds to hit the ground. What is your measured value of g? Use correct units and show all work.

Answers

Answer: ch2.7 × 10.0m = 2.10 ÷ 1.40 sec

= ch.10.23.

Explanation:

Final answer:

The measured value of gravity 'g' can be found by plugging the given height and time into the formula h = 0.5*g*t^2. Solving for 'g' gives us a measured value of approximately 10.20 m/s^2.

Explanation:

You can calculate the measured value of gravity 'g' using the formula for motion under gravity, which is: h = 0.5*g*t^2. Here 'h' stands for height, 'g' for gravitational acceleration and 't' for time.

Given in the problem is h = 10.0 m, t = 1.40 s. Substituting these values in the formula, we get 10.0 = 0.5*g*(1.40)^2.

Solving for 'g', we find g ~ 10.204 m/s^2. Hence your measured value of 'g' is approximately 10.20 m/s^2.

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in coming to a stop, an old truck leaves skid marks 45 m long on the highway. assuming a deceleration of 6m/s2 , estimate the speed of the truck just before braking.

Answers

The speed of the truck just before braking is 23.24 m/s.

What is the speed of the clock before braking?

The speed of the truck before braking is calculated by applying the third kinematic equation as shown below.

v² = u² - 2as

where;

v is the final velocity of the truck when it stopsa is the acceleration of the trucks is the distance travelled by the truck

When the truck stops, the final velocity = 0

0 = u² - 2as

u²  = 2as

u = √2as

u = √ ( 2 x 6 x 45 )

u = 23.24 m/s

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1.7-3 a polyethylene bar with a diameter d1 5 4.0 in. is placed inside a steel tube with an inner diameter d2 5 4.01 in. (see figure). the polyethylene bar is then compressed by an axial force p. at what value of the force p will the space between the polyethylene bar and the steel tube be closed? for polyethylene, assume e 5 200 ksi and n 5 0.4.

Answers

The space between the polyethylene bar and the steel tube will be closed when the applied force P is 476.48 Pounds.

What is Hooke's Law?

Hooke's Law is a principle in physics that describes the relationship between the applied force on an object and the resulting deformation of that object. The law states that, within the elastic range of deformation, the magnitude of the deformation (strain) is directly proportional to the magnitude of the applied force (stress).

To determine the force P at which the space between the polyethylene bar and the steel tube is closed, the relationship between the applied force and the resulting deformation of the polyethylene bar needs to be known. Since the polyethylene bar is in the elastic range of deformation, Hooke's Law can be used.

The deformation of the bar is given by:

δ = (Pd1) / (2πE(d1/2) ²)

Where:

δ = deformation (inches)

P = applied force (pounds)

d1 = diameter of the polyethylene bar (inches)

E = modulus of elasticity of the polyethylene (ksi)

The space between the polyethylene bar and the steel tube is closed when the deformation of the bar is equal to the difference in the inner diameters of the two tubes:

δ = d2 - d1

By substituting the given values and solving for P, the force at which the space between the polyethylene bar and the steel tube is closed can be found.

P = (2πE(d1/2)²×(d2-d1)) / d1

P = (2π200(4/2)² × (4.01-4)) / 4 = 476.48 Pounds

Therefore, the space between the polyethylene bar and the steel tube will be closed when the applied force P is 476.48 Pounds.

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you need to determine the density of a ceramic statue. if you suspend it from a spring scale, the scale reads 30.4 n . if you then lower the statue into a tub of water, so that it is completely submerged, the scale reads 17.0 n .

Answers

In this case, the weight in air is 30.4 N and the weight in water is 17.0 N the density can be found using the formula:

density of object = (weight in air - weight in water) / volume of object

The volume of the statue is required to calculate the density using the formula:

density of object = (weight in air - weight in water) / volume of object

To determine the density of the ceramic statue, you can use the concept of buoyancy. The buoyant force on an object submerged in a fluid is equal to the weight of the fluid that is displaced by the object. This can be calculated using the equation:

density of object = (weight in air - weight in water) / volume of object

In this case, the weight in air is 30.4 N and the weight in water is 17.0 N. To calculate the volume of the object, you will need to measure it or have the information available. Once you have the volume, you can plug it into the above equation and calculate the density of the ceramic statue.

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