Alexa's hair grows with an average speed of 3.5 × 10^-⁹m/s. How long does it take her hair to grow 0.30 m? Note: 1 yr = 3.156 × 10⁷s. A)1.9 yr B)1.3 yr C)0.37 yr D)5.4 yr E)2.7 yr

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Quizplus · Accepted Answer

To find the time, divide the total growth (0.30 m) by the growth rate (3.5 × 10^-9 m/s). Then convert the result from seconds to years using the conversion factor (1 yr = 3.156 × 10^7 s). This calculation gives approximately 2.7 years.

Alexa's Hair Grows with an Average Speed of 3