Calcular el área sobre la cual debe aplicarse una fuerza cuya magnitud es de 150n para que exista una presión de 2000n/m²

2kg of refrigerant 134a undergoes a polytropic process in a piston-cylinder assembly from an initial state of saturated vapor at 2 bar to a final state of 12 bar, 80 degree c. a)determine the work for the process in kj. b)sketch the process on a p-v diagram.

The electric potential a distance r from a small charge is proportional to what power of the distance from the charge? a. r^-1 b. r c. r^-2 d. r^2

What type of force holds atoms together in a crystal?