A power plant that would make use of the temperature gradient in the ocean has been proposed. The system is to operate between 5.00∘∘C (water temperature at a depth of about 1 km) and 20.0∘∘C (surface water temperature).If the power output of the plant is 75.0 MW, how much energy is absorbed per hour?
A geyser heats water flowing at the rate of 3.0 liters per minute from 27 ∘∘C to 77 ∘∘C. If the geyser operates on a gas burner, what is the rate of consumption of the fuel if its heat of combustion is 4.0 ×× 104104 J/g?
In changing the state of a gas adiabatically from an equilibrium state A to another equilibrium state B, an amount of work equal to 22.3 J is done on the system. If the gas is taken from state A to B via a process in which the net heat absorbed by the system is 9.35 cal, how much is the net work done by the system in the latter case?