The cost of energy delivered to residences by electrical transmission varies from $0.070/kWh to $0.258/kWh throughout the United States; $0.110/kWh is the average value. (a) At this average price, calculate the cost of leaving a 120-W porch light on for two weeks while you are on vacation? $ 4.44 (b) At this average price, calculate the cost of making a piece of dark toast in 3.00 min with a 965-W toaster? $ .00509 Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. (c) At this average price, calculate the cost of drying a load of clothes in 40.0 min in a 5.10 x 10³-W dryer? $.35904 Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error.
The cost of energy delivered to residences by electrical transmission varies from $0.070/kWh to $0.258/kWh throughout the United States; $0.110/kWh is the average value. (a) At this average price, calculate the cost of leaving a 120-W porch light on for two weeks while you are on vacation? $ 4.44 (b) At this average price, calculate the cost of making a piece of dark toast in 3.00 min with a 965-W toaster? $ .00509 Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. (c) At this average price, calculate the cost of drying a load of clothes in 40.0 min in a 5.10 x 10³-W dryer? $.35904 Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error.
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Transcribed Image Text:The cost of energy delivered to residences by electrical transmission varies from $0.070/kWh to $0.258/kWh throughout the United States;
$0.110/kWh is the average value.
(a) At this average price, calculate the cost of leaving a 120-W porch light on for two weeks while you are on vacation?
$ 4.44
(b) At this average price, calculate the cost of making a piece of dark toast in 3.00 min with a 965-W toaster?
$ .00509
Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry
out all intermediate results to at least four-digit accuracy to minimize roundoff error.
(c) At this average price, calculate the cost of drying a load of clothes in 40.0 min in a 5.10 x 10³-W dryer?
$.35904
x
Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry
out all intermediate results to at least four-digit accuracy to minimize roundoff error.
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