A car of weight 2270 N operating at a rate of 126 kW develops a maximum speed of 39 m/s
on a level, horizontal road.
Assuming that the resistive force (due to
friction and air resistance) remains constant,
what is the car's maximum speed on an incline
of 1 in 20; i. e., if 0 is the angle of the incline with the horizontal, sin theta= 1/20
Answer in units of m/s.

Refrigerant-134a flows through a carnot heat pump cycle at 0.5 kg/s. it is known that the maximum absolute temperature in the cycle is 1.1 times the minimum absolute temperature, and the net power input to the cycle is 2.5 kw. if the refrigerant changes from a saturated vapor to a saturated liquid during the heat rejection process, determine the maximum magnitude of the enthalpy of vaporization for this process in kj/kg (with 3 significant figures).