Start your trial now! First week only $4.99!*arrow_forward*

Question

A ball is dropped in a vacuum (no air resistance). As it falls it loses 7 J of potential energy.

How much kinetic energy did it gain?

Tagged in

Science

Physics

Find answers to questions asked by students like you.

Q: Problem 1: Consider the RC circuit in Figure 1. You may assume that the switch has been closed long ...

A: (1) For the v(0-) and i(0-), the capacitor C acts as open circuit because for a long time, it was cl...

Q: Question 18

A: Given:

Q: (multiple choice) The equation E = kq/r2 applied to (explain why that answer is correct): a. all obj...

A: Electric field due to point charge can be given as:

Q: The parachute on a race car of weight 8,830 N opens at the end of a quarter-mile run when the car is...

A: Given:Weight of the race car, W = 8830 NSpeed of the car = 38 m/sStopping distance for the racing ca...

Q: A solid 0.7350-kg ball rolls without slipping down a track toward a loop-the-loop of radius R 0.8950...

A: Let va be the speed of the ball at height H, vb be the speed of the ball at lowest point. R be the r...

Q: 36. In a thundercloud, there may be electric charges of +40.0 C near the top of the cloud and -40.0 ...

A: The charge at the top is +4.0C, the charge at bottom is -4.0C, and the distance of separation is 2km...

Q: Draw normal lines at the boundary, identify the incident, transmitted, and reflected beams.Clearly l...

A: Boundary behaviour of light in edge of round container:

Q: Part C

A: Given:

Q: Draw a vector that represents a displacement of 40 miles east. Then, from that point, draw one that ...

A: Let us draw the figure:

Q: Figure shows a block of mass m resting on a 20∘ slope. The block has coefficients of friction μs = 0...

A: Let T be the tension force in the string, f be the frictional force, theta be the incination angle, ...

Q: A 8.1 kg object undergoes an acceleration of 1.8 m/s2. (a) What is the magnitude of the resultant fo...

A: Given,

Q: If a piece of an airplane suddenly becomes detached during flight, it will crash to Earth. Would it ...

A: If an aeroplane part suddenly becomes detached it crashes because it is travelling at speed less tha...

Q: Two thin rod of length L are rotating with the same angular speed in (rad/s) about axes that pass pe...

A: Rotational kinetic energy of rod A is,

Q: A student applies a force on a puck equal to the one shown in the figure. If the mass of the puck is...

A: Given,

Q: we didn't rgy-we ou have a hen it is d does it g force. al to the force. that Seq FIGURE 9.17 Proper...

A: The answer is with respect to this link:https://www.bartleby.com/questions-and-answers/e-slope-10o-1...

Q: Week 5 Fall 2019 Three vectors 13 of 15 Review | Constants Consider three vectors AB and C all lying...

A: Part A:The vector A can be expressed in terms of their components as,The vector B can be expressed i...

Q: (Multiple choice) When nerve cells carry a signal from your hand to your brain, how is the signal pr...

A: When the membrane is at neutral state, the resting potential is negative due to the presence of more...

Q: Find the current through each of the three resistors of the circuit show in the picture. The emf sou...

A: Click to see the answer

Q: nent FULL SCREEN PRINTER VERSION K BACK NEXT Your answer is partially correct. Try again. The figure...

A: Given information:Radius of the circular loop (r) = 4.40 cm = 0.044 mInitial magnetic field strength...

Q: Instructor CE EXERCISES FOR LESSON 5 (3 page total) ht onters the urved side ot a semi-cylindnical d...

A: While entering through the curved part of semi cylindrical dish, the incident angle made by light fr...

Q: Need help on a review question

A: the work done is equal to the change in kinetic energy,the work done is,

Q: A solid sphere is roling on a surface. What fraction of its total kinetic energy is in the form of r...

A: Click to see the answer

Q: Problem 1 The velocity of a particle moving along the x axis varies in time according to the expres...

A: 1)Instantaneous velocity in km/hr at t =0 s denoted by v1 is,

Q: Uk=0.10 but it's not in the picture

A: Given information:Mass of the block 1 (m1) = 320 g = 0.32 kgMass of the block 2 (m2) = 210 g =0.21 k...

Q: 3. A 100-kg wooden crate rests on a wood floor. (a) What maximum force can you exert horizontally on...

A: a)The maximum force is,

Q: A 20.0-kg block is initially at rest on a horizontal surface. A horizontal force of 80.0 N is requir...

A: (a) The coefficient of static friction between the block and the surface is

Q: A robotic explorer on Mars deploys a simple pendulum that is one meter long. The explorer determines...

A: Click to see the answer

Q: A container with volume 1.63 L is initially evacuated. Then it is filled with 0.226 g of N2. Assume ...

A: Write the expression for the rms speed (root mean square speed) of the gas molecules.

Q: Constants Periodic Table A typical ten-pound car wheel has a moment of inertia of about 0.35 kg m2. ...

A: Given information:Moment of inertia of the wheel (I) = 0.35 kg.m2Number of revolution (N) = 35 revTi...

Q: The work done by a force acting normally to the direction of the displacement of theobject is(a) Zer...

A: Work done on an object along given direction of motion is equal to the force times the displacement ...

Q: a car of mass M traveling at velocity v1 to the right strikes a wall and bounces back with a velocit...

A: a)The impulse and the average force on the car is,

Q: A disk-shaped merry-go-round of radius 2.33 m and mass 185 kg rotates freely with an angular speed o...

A: Click to see the answer

Q: 21. As the angle between two concurrent forces decreases from 180°, their resultant (3) remains the ...

A: Resultant force is given by,

Q: Part b

A: Part B: The energy of the system is conserved as there isn’t any dissipative force acting on it.Assu...

Q: After falling from rest from a height of 25 m, a 0.30-kg ball rebounds upward, reaching a height of ...

A: Given information:The mass of the ball (m) = 0.3 kgHeight from which it falls (h1) = 25 mHeight to w...

Q: Given that the blocks are accelerating towards the right direction, how do I find the answer?

A: In this case, both block and apply forces are in horizontal direction.Using Newton’s second law, the...

Q: The moment of inertia of a 0.912-kg bicycle wheel rotating about its center is 0.165 kg m2. What is ...

A: Moment of inertia of ring is,

Q: Constants I Periodic Table A student sitting on a frictionless rotating stool has rotational inertia...

A: (A) Write the expression for rotational velocity using conservation of angular momentum.

Q: My question is Part E, please help me. Thank you so much!

A: The angle theta is the angle between the vector N and the Y axis. The vector N is making an angle wi...

Q: The heaviest invertebrate is the giant squid, which is estimated to have a weight of about 0.18 tons...

A: The weight of squid is 0.18 ton, one ton is equal to 907.185kg.Thus the weight of the squid in kg is...

Q: Five moles of an ideal monatomic gas with an initial temperature of 147 ∘C expand and, in the proces...

A: Given:Number of moles = 5Initial temperature = 147ο CHeat absorbed = 1700 JWork done = 2200 J

Q: A planet similar to the Earth has a radius 4.3 × 106 m and has an acceleration of gravity of 10 m/s ...

A: Normal acceleration will be same as acceleration due to gravity of the planet.For an object to be in...

Q: Number 3. I need also the free body diagram for that.

A: The free body diagram of the car is shown below.

Q: You might have seen basketball showoffs spinning a ball on the tip of a finger. If such a player per...

A: Consider W, work has been done to set the basketball spinning from the rest. Take the basketball to ...

Q: A mass hanging from a vertical spring is somewhat more complicated than a mass attached to a horizon...

A: 1.Equilibrium position of the oscillations will be the one where initially the system was at rest th...

Q: What are the dimensions of gamma given the following?

A: Given equation:

Q: An estimated force vs. time curve for a baseball struck by a bat is shown in the figure below. FImax...

A: From the graph the impulse acted up on the ball is given by the area under the curve. In this case t...

Q: Four forces act on an object, given by A = 38.3 N east, B = 30.3 N north, C = 76.7 N west, and ...

A: Draw the vector diagram for the provided system.

Q: I am having trouble with this question and would appreciate some help. Thanks.

A: Part (a): Ratio of the momentum:

Q: You pull on a string with a horizontal force of magnitude Fyb = 44 N that is attached to a block of ...

A: Write an expression for conservation of energy