A force acting on an object does no work if

If you exert a force of 10.0 N to lift a box a distance of 0.75 m how much work do you do?

If you perform 30 J of work lifting a 20 N box from the floor to a shelf how high is the shelf?

The standard (SI) unit of power is

Why does friction decrease the efficiency of a machine ?

Reducing friction in a machine

An inclined plane reduces the effort force by

A machine does work, it can do all of the following except

As the temperature of an object rises so does the

Which of the following increases when an object becomes warmer

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