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 the following. (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 890-W toaster. (Give your answer to at least three decimal places.) ¢ (c) Drying a load of clothes in 40.0 min in a 5,100 W dryer. (Give your answer to at least one decimal place.)
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 the following. (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 890-W toaster. (Give your answer to at least three decimal places.) ¢ (c) Drying a load of clothes in 40.0 min in a 5,100 W dryer. (Give your answer to at least one decimal place.)
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Question
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 the following.
(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 890-W toaster. (Give your answer to at least three decimal places.)
¢
(c) Drying a load of clothes in 40.0 min in a 5,100 W dryer. (Give your answer to at least one decimal place.)
¢
$
(b) Making a piece of dark toast in 3.00 min with a 890-W toaster. (Give your answer to at least three decimal places.)
¢
(c) Drying a load of clothes in 40.0 min in a 5,100 W dryer. (Give your answer to at least one decimal place.)
¢
Expert Solution
Step 1
Given,
Electricity cost = 0.12$/kWh
And power
So,
a)
Power = 40W
total time, t =7days=
So energy
and total cost,
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