In a container which can expand or contract (like a balloon), increasing the outside pressure pushing in on a balloon filled with a gas the volume the gas occupies. a. decreases b. has no effect c. increases

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

In a heat engine if 1000 j of heat enters the system and the piston does 500j of work, what is the final internal energy of the system if the inital energy was 2000 j1.write the equation2.list out your known variables 3. plug the numbers into the equations4.solve 5.write your solution statement that includes initial energy and final energy added.

Abowling ball rolling down the lane toward the pins has gravitational potential energy. a. no b. a lot of c. a little