87. Electric energy units are often expressed in "kilowatt-hours." (a) Show that one kilowatt-hour (kWh) is equal to 3.6 x 10° J. (b) If a typical family of four uses electric energy at an average rate of 580 W, how many kWh would their electric bill show for one month, and (c) how many joules would this be? (d) At a cost of $0.12 per kWh, what would their monthly bill be in dollars? Does the monthly bill depend on the rate at which they use the electric energy?
87. Electric energy units are often expressed in "kilowatt-hours." (a) Show that one kilowatt-hour (kWh) is equal to 3.6 x 10° J. (b) If a typical family of four uses electric energy at an average rate of 580 W, how many kWh would their electric bill show for one month, and (c) how many joules would this be? (d) At a cost of $0.12 per kWh, what would their monthly bill be in dollars? Does the monthly bill depend on the rate at which they use the electric energy?
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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![87. Electric energy units are often expressed in "kilowatt-hours."
(a) Show that one kilowatt-hour (kWh) is equal to 3.6 x 10 J.
(b) If a typical family of four uses electric energy at
an average rate of 580 W, how many kWh would their
electric bill show for one month, and (c) how many joules
would this be? (d) At a cost of $0.12 per kWh, what would
their monthly bill be in dollars? Does the monthly bill
depend on the rate at which they use the electric energy?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff81ef80b-8f3c-49d2-bd86-7731a50ed424%2Fe13e3c56-4ece-497b-82ec-cc121817bc17%2Fmd3j7x_processed.jpeg&w=3840&q=75)
Transcribed Image Text:87. Electric energy units are often expressed in "kilowatt-hours."
(a) Show that one kilowatt-hour (kWh) is equal to 3.6 x 10 J.
(b) If a typical family of four uses electric energy at
an average rate of 580 W, how many kWh would their
electric bill show for one month, and (c) how many joules
would this be? (d) At a cost of $0.12 per kWh, what would
their monthly bill be in dollars? Does the monthly bill
depend on the rate at which they use the electric energy?
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