There is a bell at the top of a tower that is 45 m high. The bell weighs 19 kg. The bell has potential energy. Calculate it. 19237 J
855 J
855 A
8379 J

If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.

Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. the work done on object 1 is 900 j. after the force has pulled each object, object 1 moves twice as fast as object 2. how much work is done on object 2?

How will the system respond to a temperature increase?