Gold and silver rings can receive an arc and turn molten. True or False
2 answers:
You might be interested in
Answer:
Not reasonable.
Explanation:
To solve this problem it is necessary to take into account the concepts related to the performance of a reversible refrigerator. The coefficient of performance is basically defined as the ratio between the heating or cooling provided and the electricity consumed. The higher coefficients are equivalent to lower operating costs. The coefficient can be greater than 1, because it is a percentage of the output: losses, other than the thermal efficiency ratio: input energy. For a reversible refrigerator the coefficient is given by
Where,
High temperature
Low Temperature
With our values previous given we can find it:
With these values we can now calculate the coefficient of performance:
At the same time we can calculate the work consumption of the refrigerator, this is
Where,
Required power input
t = time to remove heat from a cool to water medium
In this way we can calculate the coefficient of the refrigerator directly:
Where,
Q = Amoun of heat rejected
Comparing the values of both coefficients we have that the experiments are NOT reasonable, because the coefficient of a refrigerator is high compared to coefficient of reversible refrigerator.