The lift (elevator) is driven by an electric motor. State a reason, other than friction, why the power supplied by the motor is greater than
the power needed to transport the passengers.

The human body stores chemical energy from digested food. some of the chemical energy is converted into mechanical energy when the body moves. which statement best supported by this information

True or false graphs must include scales that increase by the same amount

Positrons are spontaneously emitted from the nuclei of