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(1) The age of the universe is thought to be about 14 billion years. Assuming two significant figures, write this in powers of ten in $(a)$ years, $(b)$ seconds.

A) 1.4$\cdot 10^{10}$ yearsB) 4.4$\cdot 10^{17}$ seconds

Physics 101 Mechanics

Chapter 1

Introduction, Measurement, Estimating

Physics Basics

Ahmed M.

July 21, 2022

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Rutgers, The State University of New Jersey

Hope College

University of Sheffield

Lectures

04:16

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09:56

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02:55

(a) Calculate the approxim…

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(II) ($a$) How many second…

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(a) How many seconds are t…

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(a) A unit of time sometim…

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(II) A $\textbf{light-year…

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So the age of the universe is 14,000,000,000 years old. So we can write this in scientific notation. 14,000,000,000 years. We could say this is going to be equal to 1.4 times 10 to the 10th years now for part B. They want us to write it in seconds so we can say 1.4 times 10 to the 10th years. And then for every one year there are 3.156 times, 10 to the seventh seconds and again for every one year. And this is giving us approximately 4.4 times 10 to the 17th seconds. That is the end of the solution. Thank you for watching.

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