Suppose you are pushing a stalled car. As the car gets going, you need less and lees force to keep it going. For the first 15m, your force decreases at a constant rate from 210.0 N to 40.0 N. How much work did you do on te car?

Why are graphs useful when interpreting data

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.

If element x has 99 protons how many electrons does it have