flow rate in a moving pipe
for part c , why when the vane is moving , the flow rate doesn't change ? ?
The flow rate is given by the formula Q=Av , where A = area , v = velocity . IMO , when the velocity of vane change , the flow rate is no longer 0.687kg/s , it should be 0.68kg/s = (10^3)(A)(24) , A= 2.83x10^5 (m^2) , so the new Q should be pa(vu) = (10^3)(2.83x10^5)(248) = 0.453kg/s , am i right??
