A rigid chamber contains 100 kg of water at 500 kPa, 100oC. A paddle wheel stirs the

Question:

A rigid chamber contains 100 kg of water at 500 kPa, 100oC. A paddle wheel stirs the water at 1000 rpm while an internal electrical resistance heater heats the water while consuming 10 amps of current at 110 Volts. At steady state, the chamber looses heat to the atmosphere at 27oC at a rate of 1.2 kW. Determine
(a) Wsh in kW.
(b) The torque in the shaft in Nm.