An dog is transported from the earth to the moon. which measurement is the same in both places

J. j. thomson’s experiment disproved the theory that an atom

Does heating a metal wire increase or decrease its electrical resistance? why?

Arailroad car collides with and sticks to an identical railroad car that is initially at rest. after the collision, the total kinetic energy of the two cars is a) the same as before. b) half as much as before. c) one third as much as before. d) one fourth as much as before. e) twice as much as before.