R-134a enters a tubular heat exchanger at 100 f with a quality of 75%. heat is transferred out of the system in an aergonic process, until the fluid leaves as saturated liquid at 0f. determine the heat transfer per lbm of r-134a flowing through the heat exchanger. neglect any changes in kinetic and potential energies. assume steady-state operation.

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.