Table of contents

0. Math Review31m
- Math Review
  31m
1. Intro to Physics Units1h 24m
2. 1D Motion / Kinematics3h 56m
3. Vectors2h 43m
4. 2D Kinematics1h 42m
5. Projectile Motion3h 6m
6. Intro to Forces (Dynamics)3h 22m
7. Friction, Inclines, Systems2h 44m
8. Centripetal Forces & Gravitation7h 26m
9. Work & Energy1h 59m
10. Conservation of Energy2h 54m
11. Momentum & Impulse3h 40m
12. Rotational Kinematics2h 59m
13. Rotational Inertia & Energy7h 4m
14. Torque & Rotational Dynamics2h 5m
15. Rotational Equilibrium3h 39m
16. Angular Momentum3h 6m
17. Periodic Motion2h 9m
18. Waves & Sound3h 40m
19. Fluid Mechanics2h 27m
20. Heat and Temperature3h 7m
21. Kinetic Theory of Ideal Gases1h 50m
22. The First Law of Thermodynamics1h 26m
23. The Second Law of Thermodynamics3h 11m
24. Electric Force & Field; Gauss' Law3h 42m
25. Electric Potential1h 51m
26. Capacitors & Dielectrics2h 2m
27. Resistors & DC Circuits3h 8m
28. Magnetic Fields and Forces2h 23m
29. Sources of Magnetic Field2h 30m
30. Induction and Inductance3h 37m
31. Alternating Current2h 37m
32. Electromagnetic Waves2h 14m
33. Geometric Optics2h 57m
34. Wave Optics1h 15m
35. Special Relativity2h 10m

1. Intro to Physics Units

Counting Significant Figures

Physics

1. Intro to Physics Units

Counting Significant Figures

Previous problemNext problem

4:10 minutes

Problem 1jYoung & Freedman Calc - 14th Edition

Textbook Question

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

Verified step by step guidance

I'm the Pearson Physics tutor, here to help students with their questions related to Physics or science. Please feel free to ask any questions within those areas!

Recommended similar problem, with video answer:

Verified Solution

This video solution was recommended by our tutors as helpful for the problem above

Video duration:

Play a video:

Was this helpful?

Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Blink Rate

The blink rate refers to the frequency at which a person blinks their eyes, typically averaging around 15 to 20 blinks per minute. This rate can vary based on factors such as environmental conditions, fatigue, and individual differences. Understanding the average blink rate is essential for estimating the total number of blinks over a lifetime.

Lifespan

Lifespan is the duration of time that an individual is expected to live, which can vary significantly based on health, genetics, and lifestyle. For calculations involving blinking, an average lifespan of around 70 to 80 years is often used. This provides a baseline for estimating the total number of blinks throughout a person's life.

Mathematical Estimation

Mathematical estimation involves using basic arithmetic to calculate the total number of blinks over a lifetime. By multiplying the average blink rate by the number of minutes in a day and then by the total number of days in a lifespan, one can arrive at an approximate figure. This method highlights the importance of understanding units and conversions in physics and everyday calculations.