(ii) A 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.

Pls hurry. Thanks :)

Why do electron microscopes have higher resolving power than light microscopes?

Agroup of monkeys is trying to cross the river in a rowboat. the maximum buoyant force on the rowboat is 2,000 n. the weight of the rowboat is 1,000 n. each monkey has a weight of 150 n. how many monkeys can safely cross in the rowboat at one time? explain your reasoning, including any calculations you used to find the answer.

Matter that emits no light at any wavelength is called