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College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000

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BuyFindarrow_forward

College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000
Textbook Problem

Not only is liquid nitrogen a cheaper coolant than liquid helium, its boiling point is higher (77 K vs. 4.2 K). How does higher temperature help lower the cost of cooling a material? Explain in terms of the rate of heat transfer being related to the temperature difference between the sample and its surroundings.

To determine

The procedure by which higher temperature helps in lowering the cost of cooling a material.

Explanation

Heat flows from region of high heats to regions of low heat. The higher the difference the faster is the heat transfer. Thus a coolant with higher boiling point will absorb more heat from the surrounding due to higher temperature difference and thus cools the surrounding at a high rate...

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