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University Physics with Modern Physics

Hugh D. Young, Roger A. Freedman

Physics

14th edition Edition · 1596 pages

ISBN: 9780321973610

Chapter 1: 19 (page 28)

How many times does a typical person blink her eyes in a lifetime?

Short Answer

Expert verified

A person blinks 672768000 times in a lifetime

Step by step solution

01

Number of average blink per day

A normal person blinks on an average of 16 times per minute.

The number of time a person blink in one year will be,

$n = 16 \frac{t i m e s}{m i n} \times \frac{60 m i n}{1 h r} \times \frac{24 h r}{1 d a y} \times \frac{365 d a y}{1 y e a r} n = 8409600 t i m e s / y e a r$

02

Number of blinks in a lifetime

Considering the life of an average person is 80 years, then the number of blinks in whole life will be,

$n = 80 y e a r \times 8409600 t i m e s / y e a r n = 672768000 t i m e s$

Thus, a person blinks 672768000 times in a lifetime.

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Most popular questions from this chapter

Question:The density of gold is 19.3 g/cm3 . What is this value in kilograms per cubic meter?

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