Two boxes are connected by a massless rope the runs across a massless frictionless pulley. A box with mass m1 = 2.00 kg rests on a frictionless horizontal surface. A second box with mass m2 = 3.00 kg lies on a frictionless surface inclined at an angle of θ = 30.0◦ above the horizontal. A force with a magnitude of |F⃗ a| = 20.0 N pulls the set of boxes. (a) What is the magnitude of the acceleration of the two boxes? (b) What is the magnitude of the tension in the rope?

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)