Electric energy units are often expressed in "kilowatt-hours." (a) Show that one kilowatt-hour (

Question

Electric energy units are often expressed in "kilowatt-hours." ($a$) Show that one kilowatt-hour (kWh) is equal to 3.6 $\times$ 10$^6$ 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?

          Electric energy units are often expressed in "kilowatt-hours." ($a$) Show that one kilowatt-hour (kWh) is equal to 3.6 $\times$ 10$^6$ 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?

Added by Eugenia M.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Madhur L

06/09/2022

Step 1

6 $\times$ 10$^6$ J, we use the formula: \[ \text{1 kWh} = \text{Power} \times \text{Time} \] Show more…

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Electric energy units are often expressed in "kilowatt-hours." ($a$) Show that one kilowatt-hour (kWh) is equal to 3.6 $\times$ 10$^6$ 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?