Johnny travels to the moon explain what will happen to his mass and weight?

True or false: the cycle of seasons on the earth is caused by the tilt of the earth on its axis toward and away from the sun.

Asystem containing an ideal gas at a constant pressure of 1.22×10^5 pa gains 2140 j of heat. during the process, the internal energy of the system increases by 2320 j. what is the change in volume of the gas?

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration