3 years ago

If manuel weighs 375 n and is holding the box. how much force is the floor exerting on him? (include direction)

1 answer:

4 0

The box is exerting a force of its weight. So we'll use W=mg (Note: you can use the notation F=ma, doesn't matter since weight IS a force.) We can call g negative since it's directed down towards the earth.

W = 5kg(-9.8 m/(s^2)) = -49 N

Thus, the box exerts a force of 49N downwards.

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Answer:

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2 years ago

If you quadruple the temperature of a black body, by what factor will the total energy radiated per second per square meter incr

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3 years ago

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Answer:

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The minimum power required to run the heat pump is given by the formula:

$\dot{W_{H} } = \frac{\dot{Q_{H} }}{COP} \\$ ...............(*)

Where the heat losses from the house, $\dot{Q_{H} } = 75,000 Btu/h$

Substituting these values into * above

$\dot{W_{H} } = \frac{75000}{17.67} \\ \dot{W_{H} } = 4244.48 Btu/h$

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2 years ago

What term is defined as the amount of charge stored per volt?

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Capacitance is a measure of charge stored per volt.

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3 years ago