2 years ago

In a closed system that has 85 J of mechanical energy, the gravitational

2 answers:

7 0

Answer:

C- it decrease from 85 J to 76 J because it has 85 J mechanical energy. The pulley decreases from 12 J to 9 J which means it lowers by 12. And it lowers by 3.

Explanation:

That's the answer.

Yuliya22 [10]2 years ago

7 0

Answer:

D. It increases from 73 to 76.

Explanation:

Ap3x 2020.

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emmainna [20.7K]

Answer:

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Explanation:

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$F=PA\\\Rightarrow F=1154.25\times 235\\\Rightarrow F=271248.75\ N$

Force due to the jet stream on the roof is 271248.75 N

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