## 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

$$P=\frac{A}{t}$$                $$A=W=mgh$$            $$P=\frac{mgh}{t}$$

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