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## Homework Statement

2 part problem

How many kWh of energy does a 650-W toaster use in the morning if it is in operation for a total of 20min?

At a cost of 9.0 cents/kWh, estimate how much this would add to your monthly electric energy bill if you made toast four mornings per week.

## Homework Equations

None really, just a lot of conversions.

## The Attempt at a Solution

Part A:

650 W = .650 kW

0.650 kW(.33 hr) = 0.2145 khW

Part B:

(0.2154 kWh)(5.28 hr)(0.09 kWh) = .10

I know that sounds really low but I'm unsure of my error.

Here's how I found 5.28 if it matters.

(0.33 hr)(16 times/month) = 5.28 hr