A 2.8-NN force is applied to the plunger of a hypodermic needle. Part A If the diameter of the plunger is 1.3 cmcm and that of the needle 0.21 , with what force does the fluid leave the needle

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j ?

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?

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?