Aball is dropped from a tower that is 512 feet high. use the formula below to find height of the ball 5 seconds after it was dropped? h=512−14t2where h represents the height, in feet, and t represents the time, in seconds, after it was dropped.

Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.