A3.0kg object moves to the right at 4.0m/s. it collides head on with a 6.0kg object moving at 4.0m/s. which statement is correct

What happens to the light rays when they hit the specimen?

Which is not a characteristic of a heat pump? a. it is used in air conditioners. b. it uses a refrigerant. c. it requires no work. d. it reverses the normal flow of thermal energy.

What’s #16 asking and how do i solve it?