1 kJ = _____ J
Show answer & explanation
Correct answer: C
Explanation
Correct Answer: Option 3 (1000)
Explanation:
1 kilojoule (kJ) = 1000 joules (J).
In the SI system of units, the prefix 'kilo' means 1000, so 1 kilojoule equals 1000 joules.
Additional Facts:
The SI unit of energy is the joule.
1 megajoule (MJ) = 1,000,000 joules.
Energy is also measured in calories (1 calorie ≈ 4.184 joules).
Possible Questions for the Upcoming Exam:
What is the SI unit of energy?
(Answer: Joule)
1 megajoule is equal to how many joules?
(Answer: 1,000,000 joules)