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1. B- Weight is a force.
2. A- a balance
3. A- hertz
4. C- It wastes very little energy.
5. C- Sound.
6. Unit of weight and force is Newton (N)
7.
8. D- Solar
9. A- Energy was destroyed as ball hit the ground .
10. C- X and Z
11. D- Nuclear energy
12. A- Coal
13. B
14. B- 70kg
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Answered by
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Answer:
1 weight is a force.
2. a balance
3. hertz.
4. it wastes very little energy.
5. sound.
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