mousMisConceptual Questions1. You push very hard on a heavy desk, trying to move it. Youdo work on the desk:9. Two ballsone straig(a) whether or not it moves, as long as you are exerting atrue if airba(b) only if it starts moving.(c) only if it doesn't move.(d) never-it does work on you.(e) None of the above.(a) Both E(b) Both E(c) The o:force.lower(d) The ohighe

Answer:- (d) never - it does work on you You push very hard on a heavy desk, trying to move it.…

Answered: MisConceptual Question 1. You push very…

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter3: Energy And Conservation Laws

Section: Chapter Questions

Problem 20P: . In compressing the spring in a toy dart gun, 0.5J of work is done. When the gun is fired, the...

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Similar questions

If only one external force acts on a particle, does it necessarily change the particles (a) kinetic energy? (b) Its velocity?
What does work on a shuffleboard puck as it slides to rest? Why is the board dusted, and how does this affect work?
Give an example of a situation in which there is a force and a displacement, but the force does no work. Explain why it does no work.
. In compressing the spring in a toy dart gun, 0.5J of work is done. When the gun is fired, the spring gives its potential energy to a dart with a mass of 0.02 kg. (a) What is the dart’s kinetic energy as it leaves the gun? (b) What is the dart’s speed?
Spiderman, whose mass is 80.0 kg, is dangling on the free end of a 12.0-m-long rope, the other end of which is fixed to a tree limb above. By repeatedly bending at the waist, he is able to get the rope in motion, eventually getting it to swing enough that he can reach a ledge when the rope makes a 60.0 angle with the vertical. How much work was done by the gravitational force on Spiderman in this maneuver?
A child of mass m starts from rest and slides without friction from a height h along a curved waterslide (Fig. P5.46). She is launched from a height h/5 into the pool. (a) Is mechanical energy conserved? Why? (b) Give the gravitational potential energy associated with the child and her kinetic energy in terms of mgh at the following positions: the top of the waterslide, the launching point, and the point where she lands in the pool. (c) Determine her initial speed V0 at the launch point in terms of g and h. (d) Determine her maximum airborne height ymax in terms of h, g, and the horizontal speed at that height, v0x. (e) Use the x-component of the answer to part (c) to eliminate from the answer to part (d), giving the height ymax in terms of g, h, and the launch angle . (f) Would your answers be the same if the waterslide were not frictionless? Explain. Figure P5.46
. A compact car can climb a hill in 10 s. The top of the hill is 30 in higher than the bottom, and the car’s mass is 1,000 kg. What is the power output of the car?
The person in Figure 7.33 does work on the lawn mower. Under what conditions would the mower gain energy? Under what conditions would it lose energy?
When released, a 100-g block slides down the path shown below, reaching the bottom with a speed of 4.0 m/s. How much work does the force of friction do?

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MisConceptual Question 1. You push very hard on a heavy desk, trying to mo do work on the desk: (a) whether or not it moves, as long as you are ex force. (b) only if it starts moving. (c) only if it doesn't move. (d) never-it does work on you. (e) None of the above.