6. An engineer proposes to develop a power plant (which can be modeled as a heat engine) that will operate at an efficiency of 70%. The steam flowing through the power plant reaches a peak temperature of 750°F and rejects heat to the environment at a temperature of 70°F. Is this proposed power plant feasible, or does it

violate the second law of thermodynamics? [MO1, MO3, MO5]