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18 July, 23:53

The most precise measurement of the speed of light in vacuum is 299,792,458 m/s. Which of the following values would you use to write this speed in scientific notation to three significant figures?

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  1. 19 July, 01:06
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    v = 3.00 x 10⁸ m/s

    Explanation:

    given,

    speed of light in vacuum = 299,792,458 m/s

    speed of light in scientific notation to three significant figures

    v = 2.99792458 x 10⁸ m/s

    by rounding off the speed to three significant figure.

    v = 3.00 x 10⁸ m/s

    On the fourth place the value is greater than 5 so, on the third place 1 will be added.

    now, the speed with three significant figure comes out to be

    v = 3.00 x 10⁸ m/s
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