A prankster drops a water-filled balloon from the balcony of a high- rise. How long does it take for the balloon to fall 44.1 mathfrak m? And show me how you got the answer step by step

What happens to an isotope during radioactive decay?

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.

Which best describes the difference between internal and thermal energy?