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Solnce55 [7]
3 years ago
8

Can anybody answer this​

Physics
1 answer:
GREYUIT [131]3 years ago
5 0

Answer:

hahahaha

Explanation:

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A wire must be replaced in a circuit by a new wire of the same material but nine times longer. If the new wire's resistance is t
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three times the original diameter

Explanation:

From the wire's resistance formula, we can calculate the relation between the diameter of the wire and its length:

R=\rho\frac{l}{\pi \frac{d^2}{4}}\\d=\sqrt{\rho \frac{4 l}{\pi R}}\\

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d'=\sqrt{\rho \frac{4 l'}{\pi R}}\\d'=\sqrt{\rho \frac{4 (9l)}{\pi R}}\\d'=3\sqrt{\rho \frac{4 l}{\pi R}}\\d'=3d

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Answer: IMA= \frac {F_r}{F_e}

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Hence, IMA of the given pulley system,

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