Your travels have taken you to another country. Since you have no money you decide to get a job and do some work. What is an occupation that really involves work in the scientific sense? Explain.

Idon’t quite understand this problem

What is a carrier wave and how does it affect what you hear on the radio

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.