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(2) A fan is to accelerate still air to a velocity of 12m/s at a rate of 3 m3/s. If the density of the air

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

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