If 173x102 kW of light from the Sun hits the Earth and the total amount of electrical energy the world uses each year is 24x10¹2 kWh then, assuming we could capture all of the power from the Sun, roughly how many times more power would we have than we need?

If 173x102 kW of light from the Sun hits the Earth and the total amount of electrical energy the world uses each year is 24x10¹2 kWh then, assuming we could capture all of the power from the Sun, roughly how many times more power would we have than we need?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

How did they get 0.0002739? Where did they get x from?

If 173x10¹2 kW of light from the Sun hits the Earth and the total amount of electrical
energy the world uses each year is 24x10¹2 kWh then, assuming we could capture all
of the power from the Sun, roughly how many times more power would we have than
we need?

so,
=7
24x10²
8760
=
12
2 x 0.002739726 X 10"
x =
0.002739726 X10¹² kw
173 х102
63,145
Apporximately 60,000 times.
SO answer is option c) 60000 X.
Thank you..
t-

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