Aheat pump operates on a carnot heat pump cycle with a cop of 13. it keeps a space at 24°c by consuming 2.15 kw of power. determine the temperature of the reservoir from which the heat is absorbed and the heating load provided by the heat pump.

the answer is d. 4

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a small object of mass 3.66 g and charge -17.6 µc is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground. what are the magnitude and direction of the electric field?

e/c, where e is its total energy