You could use an elevator or the stairs to lift a box to the tenth floor. which has greater power? why?

Elivator, cause their is more gravity fighting agenced it, because its being directly lifted

ANSWER: ELEVATOR:
An elevator gets its power from the electric motors that lift it. so you are not physically moving and all you have to do is stand and wait for the elevator to stop at the 10th floor but stairs don't have any power at all.  All the energy used to climb them has to come from your muscles.

Amethod of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.