Introduction To Health Physics
Introduction To Health Physics
5th Edition
ISBN: 9780071835275
Author: Johnson, Thomas E. (thomas Edward), Cember, Herman.
Publisher: Mcgraw-hill Education,
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Chapter 2, Problem 2.42P

How much oil (138,690 Btu/gal) would it take to generate the electricity needed to keep a 100 W of light bulb lit for 1 year if the overall efficiency of the generating station is 30%?

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You decide to cook your dinner with a microwave instead of firing up the electric oven. You use 1,120 Watts for 15 minutes per dinner. What will it cost you to cook your dinners for a year if your utility charges you 5.5 cents per kWh?
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Introduction To Health Physics

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