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4 years ago

A tow truck exerts a force of 8000 N to move a car a distance of 4 m in 20 seconds. Calculate the power of the tow truck..

Physics

2 answers:

jenyasd209 [6]4 years ago

8 0

Answer:

Power = 1600Watts

Explanation:

Power is given by the rate of energy expended or work done by a body (or object).

Power = $\frac{Workdone}{time}$

Where;

Workdone = Force x distance

=> Power = Force x distance / time -----------------------(i)

<em>According to the question,</em>

Force = 8000N

distance = 4m

time = 20 s

<em>Substitute these values into equation (i) above</em>

=> Power = 8000 x 4 / 20

=> Power = 1600Watts

Therefore the power of the tow truck is 1600Watts

olga_2 [115]4 years ago

6 0

3. 1600 Do the math on the calculator

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3 years ago

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Answer:

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Q = + 71 nC = $71\times 10^{- 9} C$

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Electric field at the mid-point due to charge Q is given by:

$\vec{E} = \frac{Q}{4\pi\epsilon_{o}(\frac{d}{2})^{2}}$

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$\vec{E'} = \frac{Q'}{4\pi\epsilon_{o}(\frac{d}{2})^{2}}$

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