In an electrically heated home, the temperature of the ground in contact with a concrete basement wall is 11.9 °C. The temperature atthe inside surface of the wall is 19.0 °C. The wall is 0.13 m thick and has an area of 7.5 m². Assume that one kilowatt hour of electricalenergy costs $0.10. How many hours are required for one dollar's worth of energy to be conducted through the wall?Number iUnits

Answered: Image /qna-images/answer/c0cc53a7-ce04-49df-9354-24543279c0ce.jpg

Answered: In an electrically heated home, the…

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter18: Heat Engines, Entropy, And The Second Law Of Thermodynamics

Section: Chapter Questions

Problem 45P

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Similar questions

A 361-W heat pump operates between the ground, whose temperature is 6.2, and the interior of a house at 20.1. What is the theoretical maximum amount of heat per hour that the heat pump can supply to the house? Express your answer in MJ, to at least one digit after the decimal point.
250 students sit in an auditorium listening to a physics lecture. Because they are thinking hard, each is using 125 W of metabolic power, slightly more than they would use at rest. An air conditioner with a COP of 5.0 is being used to keep the room at a constant temperature. What minimum electric powermust be used to operate the air conditioner?
A person consumes about 2700 Cal a day. 1 Cal = 4186 J, and 1 kWh = 860 Cal. Part A What is this energy in joules? (2 sig figs) Part B What is this energy in kilowatt-hours? (2 sig figs) Part C If a power company charges about 10 ¢ per kilowatt-hour, how much would this energy cost per day if the person bought it from the power company? (2 sig figs)
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