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Kitty [74]
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]3 years ago
4 0

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.

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Answer:

Your answer will be 6.0kg•m/s

Explanation:

In the given question all the required details d given. Using these information's a person can easily find the momentum of the object. In the question it is already given that the mass of the object is 5 kg and the velocity at which it is traveling is 1.2 m/s.We know the equation of finding momentum asMomentum = mass * velocity                   = 5 * 1.2                    = 6So the momentum of the object is 6 Newton.

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3 years ago
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zhannawk [14.2K]

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Explanation:

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