Solved: Electric energy units are often expressed in the
Chapter 17, Problem 62P(choose chapter or problem)
Problem 62P
Electric energy units are often expressed in the form of “kilowatt-hours.” (a) Show that one kilowatt-hour (kWh) is equal to 3.6 × 106J. (b) If a typical family of four uses electric energy at an average rate of 520 W, how many kWh would their electric bill be 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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