A heat pump is used to heat a house in winter; the inside radiators are at Th and the outside heat exchanger is at Tc. If it is a perfect (i. e., Carnot cycle) heat pump, what is Kpump, its coefficient of performance

Panel bc in fig. p2.76 is semi-circular, with the 3 meter radius and horizontal straight edge through point b. compute (a) the hydrostatic force of the water on the panel, (b) its center of pressure, and (c) the moment of this force about point b. assume atmospheric pressure on the dry side of the panel