Do) 3. The English longbow became the premier weapon of battle during the 1400s. This weapon ended the supremacy of the "knight in shining armor", as this new bow and arrow
was able to penetrate armor with ease at 300 yards - and a sword can't kill you until they
get within 5 feet of each other. Two archers shoot at the exact same time. One arrow
reaches a height of 120 m and the other arrow reaches a height of 90 m. Which arrow
will be in the air for the longest time?

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)