Giancoli's Physics: Principles with Applications, 7th Edition
1
Introduction, Measurement, Estimating
Change chapter

1-4: Measurement, Uncertainty, Significant Figures
1-5 and 1-6: Units, Standards, SI, Converting Units
1-7: Order-of-Magnitude Estimating
1-8: Dimensions

Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 19
Q

# A light-year is the distance light travels in one year (at speed $= 2.998 \times 10^8 \textrm{ m/s}$).

1. How many meters are there in 1.00 light-year?
2. An astronomical unit (AU) is the average distance from the Sun to Earth, $1.50 \times 10^8 \textrm{ km}$. How many AU are there in 1.00 light-year?
A
a) $9.46 \times 10^{15} \textrm{ m}$
b) $6.31 \times 10^4 \textrm{ AU}$

#### Find us on:

Giancoli Answers, including solutions and videos, is copyright © 2009-2022 Shaun Dychko, Vancouver, BC, Canada. Giancoli Answers is not affiliated with the textbook publisher. Book covers, titles, and author names appear for reference purposes only and are the property of their respective owners. Giancoli Answers is your best source for the 7th and 6th edition Giancoli physics solutions.