science
Grade6
Easy
Question
The unit of potential energy is______
- Calorie
- Joules
- Newton
- Meter
Hint:
Joules is the unit of energy.
The correct answer is: Joules
- The unit of potential energy is joules (J).
- It was named after an English physicist James Joules.
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The length of rod is 4 m. When subjected to heat, it expands to 10 m with a change in temperature of 6°C. Find the coefficient of expansions.
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