Which of the following is the correct definition of mechanical energy? a. energy stored in chemical bonds of molecules b. energy of an object due to the random motion of its atoms and molecules c. energy an object has because of its motion or position d. energy produced from the splitting of atoms

4r-134a enters the condenser of a residential heat pump at 800 kpa and 50°c at a rate of 0.022 kg/s and leaves at 750 kpa subcooled by 3°c. the refrigerant enters the compressor at 200 kpa superheated by 4°c determine (a) the isentropic efficiency of the compressor, (b) the rate of heat supplied to the heated room, and (c) the cop of the heat pump. also, determine (d) the cop and rate of heat supplied to the heated room if this heat pump operated on the ideal vapor-compression cycle between the pressure limits of 200 and 800 kpa. (0.757, 4.37 kw, 5.12, 6.18, 3.91 kw)

Abar magnet cut in half will form a total ofpoles. a)fourb)eightc)two

To a of 4 x hz is 1. 0. mm nm nm