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Margarita [4]
3 years ago
6

A heat engine uses thermal energy that flows from a heat source with a temperature of 325 K to a cold sink, which has a temperat

ure of 135 K. What is the efficiency of the heat engine? The answer should have three significant figures
Physics
2 answers:
Ilya [14]3 years ago
5 0
The answer is "58.5"
LuckyWell [14K]3 years ago
4 0

Answer:

58.5 %

Explanation:

temperature of hot source, T1 = 325 K

temperature of cold source, T2 = 135 K

The efficiency of a heat engine is defined as the ratio of work done to the input energy.

the formula to find the efficiency of heat engine is given by

η = 1 - T2 / T1

η = 1 - 135 / 325

η = 0.585

η = 58.5 %

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dB = 10 log(I/I0), where I0 is 10^-12 Watts per square meter

Substituting the values to the equation,

84 = 10log(I/10^-12)
I = 0.0002512 W/m2

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Answer:

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Explanation:

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In the case of circular motion, the magnitude of the velocity remains constant, the change in its direction occurring.

                    a_{c} = v2/R

In the general case, both the module and the address change

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Answer:

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Explanation:

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Answer:

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