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2 years ago

……………………………………………………………..?

Physics

1 answer:

kotegsom [21]2 years ago

3 0

Answer:

Explanation:

First find the electrical wattage

W = I^2 * R

R = 12 ohms

I = 2 amps

Wattage = 2^2 * 12

Wattage = 4* 12

Wattage = 48 watts.

Now you need to use the power formula

Work = Power * Time

Work = ?

Power = 48 watts

Time = 3 minutes = 3 * 60 = 180 seconds.

Work = 48 * 180

Work = 8640 J

That's C

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Explanation:

given,

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$t = \dfrac{8.1}{343} = 0.023 s$

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2 years ago

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Answer:

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r=0.6m

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Fa=3.9N

The normal force exerted at B is 0.69N

Fb=0.69N

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W=∆K.E+P.E

So we need to know the velocity at both point A and B

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