2.according to newton’s first law, if no force acts on an object, it will just continue moving. explain in terms of newton’s first law why a car engine must exert a force between the car and the road to drive at a constant speed on a straight and level road.

Abird sitting high in a tree is an example of what type of wnergy

Argon, neon, and xenon are examples of

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)