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воскресенье, 20 мая 2018 г.

A motor can fill a tank, which is at a height of 10 m above the ground in 4 minutеs. Capacity the tank is 2400 kg

A motor can fill a tank, which is at a height of 10 m above the ground in 4 minutеs. Capacity the tank is 2400 kg of the water. Find the power of motor.  (g=10N/kg)
A) 100 W 
B) 1000 W 
C) 500 W
D) 250 W

\(P=\frac{A}{t}\)                \(A=W=mgh\)            \(P=\frac{mgh}{t}\)

\(P=\frac{2400*10*10}{4*60}=1000\;\text{Вт}\)


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