an electric motor lifts on elevator 9 m in 15s by exerting an u...

An electric motor lifts an elevator 1.1 m in 13.0 s by exerting an upward force of 7.80 x 104 N. Wha...

A motor lifts a 70.0 kg box off the ground, starting from rest. In 8.00 seconds it lifts the box to...

a 4.5kw electric motor is 90% efficient.how much energy it use in 20 seconds.

a motor lifts a 12 kg mass to a height of 15 meters at a content velocity in 3.5 seconds. a) find...

A 1.00 x 10^4 W electric motor is used to lift a 955 kg object vertically 25.0 m at a constant veloc...

An electric dentist chair lifts ruth,110,0.3 meters in 10 seconds what is the power developed by thi...

A motor lifts an elevator of mass m at constant speed. The power output of the motor is P and there...

An electric motor is used to lift a load of bricks through a vertical height of 20m.the tension in t...

an elevator motor lifts a load of 2500 kg a height of 12.0 m in 3.00 seconds. the energy required by...

If an electric motor uses 50 kJ of energy to do 46 kJ of work, how efficient is it?

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