Atoy rocket is shot straight up into the air with anitial velocity of 45 m/s

If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 380j of energy to the room?

Ineed the answer to question 1 , i’m desperate

What happens when a rubber rod is rubbed with a piece of fur?