In a day, an electrical resistance heater uses 10 kW-h of electricity. In the same day, the heater delivers 9 kW-h of heat to th

Question

3 years ago

13

In a day, an electrical resistance heater uses 10 kW-h of electricity. In the same day, the heater delivers 9 kW-h of heat to th

e house in which it is located. Is this possible or is this a perpetual motion machine? If so, what kind? Explain your reasoning. (5 points)

Physics

1 answer:

Illusion [34] · Answer 1 · 2022-05-21T20:33:22+03:00

Answer:

The heater is not a perpetual motion machine.

Explanation:

A perpetual motion machine is a machine that can run forever without any energy inputs. That is, it delivers the same amount of energy as it uses. Such a machine is almost hypothetical because it is opposite to the second law of thermodynamics.

The heater mentioned in the question is not a perpetual motion machine because it delivers less energy than it requires. It uses 10 kW-h of electricity to produce 9 kW-h of heat according to the question.