State the energy changes that occur in the following: (i) the unwind – InterviewSolution

1.	State the energy changes that occur in the following: (i) the unwinding of a watch spring. (ii) burning coal while operating a steam engine. (iii) lighting of a torch bulb. (iv) an electric generator (or dynamo).
Answer» I) physicalii) chemicaliii) physicaliv) physicalExplanation:MARK BRAINLIEST

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