In the following circuit, which resistors are connected in parallel? a) Resistors A & B
b) Resistors A & C
c) Resistors B & C
d) Resistor C is connected in parallel with the combination of resistors A and B
e) None of these are connected in parallel

Me plz i don’t know the charges on each of these

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.

The solid that is formed and usually sinks to the bottom of a solution is the