Which characteristics describe a point charge?
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a. it has a large volume and acts uniformly within its volume.
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b. it takes up no space and does not act on its surroundings.
c. it takes up no space and acts uniformly on its surroundings.
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d. it has a large volume and acts uniformly on its surroundings.

Awoman stands a distance d from a loud motor that emits sound uniformly in all directions. the sound intensity at her position is an uncomfortable 2.0×10-3 w/m2. at a distance 2.6 times as far from the motor, what are (a) the sound intensity and (b) the sound intensity level relative to the threshold of hearing?

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

Discuss how the hardness or softness of the landing surface is related to the time required to stop the egg