please anwer the 8th Q and 9th Q answer............ please urgent
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9. Number of oscillations = 20
Total time taken to complete 20 oscillations = 32 s
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according to question number 8 when iron nail put into copper sulphate solution it displaces copper from its solution and make the solution of ferrous sulphate and iron nail become redish brown
q9 total number total time taken up on total number of oscillations 32 upon 20 that answer is 1.6
q9 total number total time taken up on total number of oscillations 32 upon 20 that answer is 1.6
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