How many joules are in one kilojoule?

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Prepare for the Dual Enrollment Physical Science Midterm Exam. Enhance your knowledge with multiple choice questions and detailed explanations. Get ready to excel on your midterm!

Multiple Choice

How many joules are in one kilojoule?

Explanation:
The concept here is metric prefixes. The prefix kilo- means 10^3, or 1000. So a kilojoule is 1000 joules. That’s why one kilojoule equals 1000 J. If you’re converting the other way, 1 J is 0.001 kJ. The other amounts—1 J being too small for a kilojoule, and 1,000,000 J corresponding to a megajoule—fit with those same prefix rules.

The concept here is metric prefixes. The prefix kilo- means 10^3, or 1000. So a kilojoule is 1000 joules. That’s why one kilojoule equals 1000 J. If you’re converting the other way, 1 J is 0.001 kJ. The other amounts—1 J being too small for a kilojoule, and 1,000,000 J corresponding to a megajoule—fit with those same prefix rules.

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