A closed, rigid tank contains Refrigerant 134a initially at 100°C. The refrigerant is cooled until it becomes saturated vapor at 20°C. Kinetic and potential energy effects can be ignored. For the refrigerant:

a) Show the process on a T-v diagram

b) Determine the initial and final pressures, each in bar

c) Determine the heat transfer, in kJ/kg.

Atriangle with equal sides of length 10 cm has -2.5-nc charged objects at each corner. part a determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. horizontally rightward vertically downward vertically upward horizontally leftward