The following formula is used in economics to find a company's net income NNN, where PPP is the sales price, VVV is the variable cost per unit, SSS is the sales volume, and FFF are fixed costs. N = S\cdot (P-V)-FN=S⋅(P−V)−FN, equals, S, dot, left parenthesis, P, minus, V, right parenthesis, minus, F

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

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.