2 years ago

What do you do when there’s a child in front of you?

1 answer:

6 0

If there is a random child, you should ask where they should be and where their parents went. if it your child, they prolly want food or sum.

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2 years ago

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4.2 A vapor compression refrigeration machine uses 30kW of electric power to produce 50 tons of cooling. What is

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5.833

Explanation:

Coefficient of Perfomance (COP) is the ratio of refrigeration effect to power input.

$COP=\frac {RE}{P}$ where RE is refrigeration effect and P is power input

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2 years ago