A particular frost-free refrigerator uses about 745 kWh of
electr...

Question

A particular frost-free refrigerator uses about 745 kWh of
electrical energy per year. Express this amount of energy in each
unit.
c. Cal

Accepted Answer

Hey everyone. Our question here is asking us to perform the following conversion from kilowatt hour to calories. Now let's go ahead and think about the relationships we've learned. We know that one kW h Is equivalent to 3. times 10 to the six jewels. And another relationship that we've learned is one calorie Is equivalent to 4184 jules. And since we have these relationships, we can go ahead and go from kilowatt hour to jules and then finally into calories. Starting off with 379.6 kilowatt hour. We're going to use our relationship of one kilowatt hour per 3.6 times 10 to the six jewels. And we know that we have 4184 jewels, her one calorie. Now when we calculate this out, we end up with a value of 3.27 Times 10 to the 5th calories. And this is going to be our final answer. So I hope this made sense. And let us know if you have any questions

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