Please help me! Two protons (mass =1.67 x 10-27 kg, charge =1.6 x 10-19 C) in a nucleus are 10-15 m apart.
If they were free to move and start from rest, find their speeds when they are 8.0 x 10-15 m apart.

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?

An ideal gas is held in a container at constant volume. initially, its temperature is 5 degrees c and its pressure is 1.2 atm. what is its pressure when its temperature is 43 degrees c? answer in units of atm

The molecular mass of a gas is (select all that apply) a. independent of the type of gas b. the same number as the atomic (or molecular) mass, but measured in grams c. dependent on the temperature d. the mass of a mole of the gas