[填空题]
(a) What is the coefficient of performance of an ideal heat pump ths y/epmmdg0c1gw-7el *u 9l -fat ebg kb7.lbc16h xtracts heat fromcbbbk6g.h7 1 l 6$^{\circ}\,C$ air outside and deposits heat inside your house at 24$^{\circ}\,C$?
(b) If this heat pump operates on 1200 W of electrical power, what is the maximum heat it can deliver into your house each hour? $ \times10^{ 7}J$
