Question

A machine can do work by itself

Answer 1

Answer:

Perpetual motion is the motion of bodies that continues forever. A perpetual motion machine is a hypothetical machine that can do work infinitely without an energy source. ... A common example is devices powered by ocean currents, whose energy is ultimately derived from the Sun, which itself will eventually burn out

Answer 2

Answer:

machine is a hypothetical machine that can do work infinitely without an energy source. ... A common example is devices powered by ocean currents, whose energy is ultimately derived from the Sun, which itself will eventually burn out.

make me as brainlist