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vovangra [49]
3 years ago
15

A rope holding a brick is hanging from the ceiling of an elevator at rest. If the elevator accelerates

Physics
1 answer:
dezoksy [38]3 years ago
7 0

Answer:I think it will fall.

Explanation:Bc the tension will be verrrrrrrrryyyyyy fast so it will make the brick on the rope break. I am not sure if it is correct

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Being good

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Describe metallurgy. Check all that apply.
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A, C, D

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Why is the weight of an object on the moon 1/6 th its weight on the earth?
ehidna [41]

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2 years ago
The first and second coils have the same length, and the third and fourth coils have the same length. They differ only in the cr
stealth61 [152]

Answer:

\frac{R_2}{R_1}=\frac{A_1}{A_2}\\\frac{R_4}{R_3}=\frac{A_3}{A_4}

Explanation:

The resistance of a conductor is directly proportional to its length and is inversely proportional to its cross-sectional area, this dependence is given by:

R=\frac{\rho L}{A}

\rho is the material's resistance, L is the legth and A is the cross-sectional area.

For the first and second coils, we have:

R_1=\frac{\rho L}{A_1}\\R_2=\frac{\rho L}{A_2}\\\rho L=R_1A_1\\\rho L=R_2A_2\\R_1A_1=R_2A_2\\\frac{R_2}{R_1}=\frac{A_1}{A_2}

For the third and fourth coils, we have:

R_3=\frac{\rho L'}{A_3}\\R_4=\frac{\rho L'}{A_4}\\\rho L'=R_3A_3\\\rho L'=R_4A_4\\R_3A_3=R_4A_4\\\frac{R_4}{R_3}=\frac{A_3}{A_4}

6 0
3 years ago
Now far is it to the moon?
diamong [38]
<span>238,900 mi hope it helps :)</span>
8 0
3 years ago
Read 2 more answers
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