You drop two balls from a tower, one of mass m and the other of mass 3m. just before they hit the ground, which ball, if either, has the larger kinetic energy? a. second b. first c. both balls have the same kinetic energy

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.

Energy flows from the producer level to the level. is called

The movement of electrons between atoms is called an