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The label on a washing machine indicates that the washer will use $85 worth of hot water if the water is heated by a 90 percent efficient electric heater at an electricity rate of $0.125/kWh. If the water is heated from 18 to 45°C, the amount of hot water an average family uses per year is (a) 19.5 tons (b) 21.7 tons (c) 24.1 tons (d) 27.2 tons (e) 30.4 tons

The label on a washing machine indicates that the washer will use $85 worth of hot water if the water is heated by a 90 percent efficient electric heater at an electricity rate of $0.125/kWh. If the water is heated from 18 to 45°C, the amount of hot water an average family uses per year is (a) 19.5 tons (b) 21.7 tons (c) 24.1 tons (d) 27.2 tons (e) 30.4 tons

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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The label on a washing machine indicates that the washer will use $85 worth of hot water if the water is heated by a 90 percent efficient electric heater at an electricity rate of $0.125/kWh. If the water is heated from 18 to 45°C, the amount of hot water an average family uses per year is (a) 19.5 tons (b) 21.7 tons (c) 24.1 tons (d) 27.2 tons (e) 30.4 tons

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