20 Kilowatts a motor carries 2 quintal water 35 meter height within 3 minutesFind out efficiency of that motor.

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?

More solar radiation is absorbed by earth’s surface than by

Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to: