Question

32. a) Calculate the amount of energy released when a radioactive substance undergoes fusion
and results in a mass defect of 2 Kg.
b) A mechanic unscrew a nut by applying a force of 140 N with a spanner of length 40 cm. What
should be the length of the spanner if a force of 40 N is applied to unscrew the same nut? pls ans my exams are going noww​

Answer 1

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