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Question

To express the speed of the supersonic jet, which is 130000 m/s in the standard form, we write it as 1.3×10a m/s. The value of a is 

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Solution

Speed of the jet =130000 m/s
= 13 × 10000 m/s
= 13 × 104 m/s
= 1.3 × 105 m/s

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