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Vanyuwa [196]
3 years ago
5

Heat energy can be produced in many ways. Which of the following sources can produce heat energy? A. the Sun B. electricity C. b

urning wood D. all of these
Chemistry
2 answers:
Thepotemich [5.8K]3 years ago
6 0
Hi there:)

The answer to your question is D. all of these.

Hope this helps  :)

~ TRUE BOSS
WINSTONCH [101]3 years ago
4 0

The answer is D. all of these

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5 0
2 years ago
The coefficient of performance (cop) of a refrigerator is defined as the ratio of?
Vinvika [58]

The coefficient of performance (cop) of a refrigerator is defined as the ratio of " the work necessary to heat or cool something usefully."

The usable heating or cooling delivered to work required ratio, also known as the coefficient of performance, or COP, of a heat pump, refrigerator, as well as air conditioning system. Higher efficiency, less energy (power) usage, and thus reduced operational costs are all related to higher COPs.

Coefficient of performance formula:

K = Q_{H} / W_{in}

where, K = Coefficient of performance, Q_{H} = heat of pumps output, W_{in} = work required by the system.

It is refrigeration's coefficient of performance (COP) will always be greater than 1.

Therefore, the coefficient of performance (cop) of a refrigerator is defined as the ratio of " the work necessary to heat or cool something usefully."

To know more about  coefficient of performance

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3 0
2 years ago
Which states of matter change shape when moved? Which states of matter change shape when moved?
lions [1.4K]

Answer:

Gas and Liquids

Explanation:

6 0
3 years ago
what is the inferred pressure, in million of atmospheres, in Earth's interior at a depth of 2900 kilometers?
NemiM [27]

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8 0
3 years ago
1. Multiple Choice
solong [7]

Answer:

#1 A

#2 B

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Explanation:

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3 years ago
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