For a completely inelastic collision, the fractional change in kinetic energy can be found as a function of the masses of the projectile and target carts only. (a) show in detail that the fractional change in kinetic energy is given by ∆('() '(* = (' '(*) '(* = − / (01/) . (b) what is the significance of the negative value for the fractional change in kinetic energy? (10 pts)

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)