# The cost of electricity varies widely throughout the UnitedStates; \$0.120/kWh is a typical value. At this unit price, calculatethe cost of (a) leaving a 40.0 - W porch light on for 2 weekswhile you are on vacation, (b) making a piece of dark toast in3.00 min with a 970 - W toaster, and (c) drying a load of clothesin 40.0 min in a 5 200 - W dryer.

Question
Asked Dec 19, 2019
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The cost of electricity varies widely throughout the United
States; \$0.120/kWh is a typical value. At this unit price, calculate
the cost of (a) leaving a 40.0 - W porch light on for 2 weeks
while you are on vacation, (b) making a piece of dark toast in
3.00 min with a 970 - W toaster, and (c) drying a load of clothes
in 40.0 min in a 5 200 - W dryer.

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## Expert Answer

Step 1

Given:

Cost of electricity = \$0.120 per kWh

Step 2

Calculating the cost of leaving a 40 W porch light on for 2 weeks:

Step 3

Calculating the cost of making a piece of dark toast in 3.00&n...

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