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Sveta_85 [38]
3 years ago
5

A boy is inning with a kinetic energy of 810j. If the boy has a mass of 80kg. What is his speed ?

Physics
1 answer:
Eva8 [605]3 years ago
7 0
His speed is 4.5 m/s
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Es frecuente que en las instalaciones eléctricas domésticas se utilice alambre de cobre de 2.05 mm de diámetro. Determine la res
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Answer:

The resistance is 0.124 ohm.

Explanation:

It is common for domestic electrical installations to use copper wire with a diameter of 2.05 mm. Determine the resistance of such a wire with a length of 24.0 m.

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radius, r = 1.025 mm

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R =\rho \frac{L}{A}\\\\R = \frac {1.7\times10^{-8}\times 24}{3.14\times1.025\times1.025\times 10^{-6}}\\\\R = 0.124 ohm

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