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13 March, 05:20

A dust particle weighs 7.42 * 10-10 kilograms. What is the weight of 5 * 106 dust particles represented in scientific notation?

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  1. 13 March, 06:21
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    A dust particle weighs 7.42 * 10-10 kilograms.

    Weight of 5 * 106 dust particles = 5 * 10^6 x 7.42 x 10^ (-10)

    = 5 x 7.42 x 10^ (6-10)

    = 37.1 x 10^ (-4)

    = 3.71 x 10^ (-3) kilograms
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