2-129 A fan is to accelerate quiescent air to a velocity to 12 m/s at a rate of 3 m3/min. If the density of air is 1.15 kg/m3, the minimum power that must be supplied to the fan is
a) 248 W
b) 72 W
c) 497 W
d) 216 W
e) 162 W
 
 
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