Question

10. A 2-kg sphere falls from a height of 3 m. If
whole of its potential energy is converted into
heat, then how much heat will be produced?
(1 cal=4.2 J)
Ans. 14 cal​

Answer 1

Given :

- mass M = 2kg

- height H = 3m

To Find :

- amount of heat produced Q

Concept :

- Energy Conservation

Calculation :

Potential enrgy = Heat energy

MgH = Q

2×3×10 = Q

Q = 60 J

Conversation :

4.2 Joule = 1 calary

so, 60 joule = 14.28 calary

Answer :

14.28 cal ≈ 14 cal

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Answer 2

Answer:

14 calories

Explanation:

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