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 2.40P
To determine

How much natural gas (1019 Btu/ft3 ) 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 40%?

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II. Power A. Sample Problems: 1 W-500 Joules t=25 seconds P=? 1 P=25 watts W-5000 Joules t=? 1 P=170 watts t=20 seconds W = ? bons Formula: Substitution: Answer with unit of measure: Formula: Substitution: Answer with unit of measure: Formula: Substitution: Answer with unit of measure: how I msidor siqma2 A 21519m 02-b W 1 If a man moves a large box that weighs 10 Newtons 20 meters in 30 seconds, how much power was used?
An electric water heater consumes 300 watts for 3 hrs per day. What is the cost of running it for one year if electricity costs P 6.00/kWh? P 197.10/yr O P1,971.00/yr O P 19,710.00/yr O P 19,710.00/yr
A 1.5 kW kettle is used 5 times a day for five minutes each time. What is the cost of running the kettle for a week, if the unit cost of electricity is 5.00/kWh? O P 22/week O P 187.50/week O P 262.5/week O P1,312.50/ week

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Introduction To Health Physics

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