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eimsori [14]
3 years ago
12

Calculate the distance travelled by the van between 16.0s and 23.0s. Give your answer correct to 2 significant figures.

Physics
1 answer:
nata0808 [166]3 years ago
6 0
45.5=46m (cor to 2 sig fig)
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A weight lifter lifts a dumbbell a certain height in 2.0 s, while a competitor does the same workin 1.0 s. Compared to the power
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a. one-half as great

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The power developed by the first lifter is one-half as great as that of the second person.

  Power is defined as the rate at which work is done;

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Since the two lifters do the same work at different time, let us estimate their power;

       P₁ = \frac{workdone}{2}                     P₂ = \frac{workdone }{1}

   We see that for P₁, power is half of the work done whereas in P₂ power is the same as the work done.

Therefore,

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Explanation:

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