Estimate the speed at which your hair grows. give your answer as the nearest order of magnitude in meters per second.

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Physics

Guest

12 November, 15:24

Estimate the speed at which your hair grows. give your answer as the nearest order of magnitude in meters per second.

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Answers (1)

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Azul David · Answer 1

You have to search a reliable source in the internet on the average growth rate of hair. From what I found, it is about 1.25 cm per month. Let's convert this to units of m/s knowing that there are 100 cm in 1 m, and approximately 2.628*10⁶ seconds in 1 month:

(1.25 cm/month) (1 m/100 cm) (1 month/2.628*10⁶ s) = 4.756*10⁻⁹ m/s

To report this as an order of magnitude, the answer would be 5*10⁻⁹ m/s.