#### Estimate the average speed with which the hair on your head grows. Give your answer in both m/s and µm/hour. Briefly describe how you arrived at this estimate.

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# Tag: physics for scientists and engineers

#### Estimate the average speed with which the hair on your head grows. Give your answer in both m/s and µm/hour. Briefly describe how you arrived at this estimate.

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#### Estimate the average speed with which you go from home to campus via whatever mode of transportation you use most commonly. Give your answer in both mph and m/s. Briefly describe how you arrived at this estimate.

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#### Estimate the height of a telephone pole. Give your answer in both feet and meters. Briefly describe how you arrived at this estimate.

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#### Estimate (don’t measure!) the length of a typical car. Give your answer in both feet and meters. Briefly describe how you arrived at this estimate.

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#### Compute the following numbers, applying the significant figure rule adopted in this textbook.

#### a.

#### b.

#### c.

#### d.

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#### Compute the following numbers, applying the significant figure rule adopted in this textbook.

#### a.

#### b.

#### c.

#### d.

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#### Using the approximate conversion factors in Table 1.5, convert the following to SI units to English units without using your calculator.

#### a. 30 cm

#### b. 25 m/s

#### c. 5 km

#### d. 0.5 cm

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#### Using the approximate conversion factors in Table 1.5, convert the following to SI units without using your calculator.

#### a. 20 ft

#### b. 60 mi

#### c. 60 mph

#### d. 8 in

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#### Convert the following to SI units:

#### a) 3 hours

#### b) 2 days

#### c) 1 year

#### d) 215 ft/s

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#### Convert the following to SI units:

#### a) 8.0 in

#### b) 66 ft/s

#### c) 60 mph

#### d) 14 in^{2}

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