A light-year (ly) is the distance light travels in one year (at speed of 2.998 ×× 108 m/sm/s ). An astronomical unit (AU) is the average distance from the Sun to Earth, 1.50 ×× 108 kmkm.1 yearyear = 3.156 ×× 107 ss.a. How many meters are there in 6.50 lyly ?Express your answer using three significant figures. b. How many AUAU are there in 6.50 lyly light-year? Express your answer using three significant figures.

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College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter1: Introduction: The Nature Of Science And Physics

Section: Chapter Questions

Problem 18PE: (a) How many significant figures are in the numbers 99 and 100? (b) If the uncertainty in each...

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A light-year (ly) is the distance light travels in one year (at speed of 2.998 ×× 10⁸ m/sm/s ). An astronomical unit (AU) is the average distance from the Sun to Earth, 1.50 ×× 10⁸ kmkm.1 yearyear = 3.156 ×× 10⁷ ss.

a. How many meters are there in 6.50 lyly ?

Express your answer using three significant figures.

b. How many AUAU are there in 6.50 lyly light-year?

Express your answer using three significant figures.

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