What would you need to do to find an object's mass and velocity? what tools do you need

What is the internal energy of 4.00 mol of diatomic nitrogen gas n2 at 455k

Agas expands from an initial volume of 0.040 m^3 and an initial pressure of 210 kpa to a final volume of 0.065 m^3 while its temperature is kept constant. how much work is done by the system?

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.