Answer:
The cost of leaving a 10-W porch light on for two weeks while you are on vacation is $0.37
Explanation:
Given:
the average cost of energy delivered = $0.110/kWh
⇒ To calculate the cost of leaving a 10-W porch light on for two weeks while you are on vacation;
⇒convert 10 W to kilowatt (kW) = (10/1000) = 0.01 kW
⇒convert two weeks to hour (h) [tex]= 2 (weeks).\frac{7 days}{1(week)}.\frac{24(hours)}{1(day)} = 336 h[/tex]
Energy rate (kWh) = 0.01*336 = 3.36 kWh
Energy cost = (3.36 kWh)*($0.110/kWh)
Energy cost = $0.37
Therefore, the cost of leaving a 10-W porch light on for two weeks while you are on vacation is $0.37
