City a is located 380 km due west of city b. a car leaves city a at 92.0 km/h east, while at the same time, a truck leaves city b at 71.0 km/h west. how far from city a will they pass each other?

What are chlorofluorocarbons and what impact do they have on the atmosphere?

If forces acting on an object are unbalanced. true or false

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)