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NISA [10]
3 years ago
11

An automobile tire is rated to last for 60,000 miles. to an order of magnitude, through how many revolutions will it turn?

Physics
1 answer:
Nastasia [14]3 years ago
3 0

Let the average diameter of the automobile tire is about 2 feet. Therefore its circumference is  2 feet\times \pi =6.29 feet.

Now we have to convert an automobile tire is rated to last for 60,000 miles in to feet.

As 1 miles =5280 feet .

So, 60000 miles = 60000\times 5280 feet =316800000 feet

Thus the number of revolutions,

\frac{316800000 feet }{6.29 feet} =50365659.8 revolutions \\\\=5.0\times10^7 rev

Hence, order of magnitude of revolutions is 7.

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