Problem: Part A399 Cal to kilowatt-hoursExpress your answer using three significant figures.Part B20 J to caloriesExpress your answer using two significant figures. Part C5000 J to kilojoules Express your answer using two significant figures.

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Problem Details

Part A

399 Cal to kilowatt-hours

Express your answer using three significant figures.

Part B

20 J to calories

Express your answer using two significant figures. 

Part C

5000 J to kilojoules 

Express your answer using two significant figures.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Units of Energy concept. If you need more Units of Energy practice, you can also practice Units of Energy practice problems.