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Akimi4 [234]
3 years ago
7

Suppose you want to operate an ideal refrigerator with a cold temperature of -10.0ºC , and you would like it to have a coefficie

nt of performance of 7. 00. What is the hot reservoir temperature for such a refrigerator? (answer in ºC)
Physics
1 answer:
Arlecino [84]3 years ago
7 0

Answer: temperature of the hot reservoir is 303.52K

Explanation:

Th=temperagture of hot reservoir

Tc=temperature of cold reservoir 263K

Eff=efficiency of the refrigerator

Cop=coefficient of performance

7

Eff=1/cop

Eff=1/7

Eff=0.142

Eff=1-263/th

0.142-1=-263/th

-0.858=-263/th

Th=303.52K

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We know, s = ut + 1/2 at²
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Substitute their values, 
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Objects 1 and 2 attract each other with a electrostatic force of 72.0 units. If the distance separating objects 1 and 2 is chang
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288.0 units; that is the electrostatic force of attraction become quadruple of its initial value.

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The pressure exerted by a gas is 2.0 atm while it has a volume of 350 mL. What would be the volume of this sample of gas at stan
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volume is 700 mL

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volume

solution

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