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Signal travels 8km down copper wire. speed signal travels is 2x10^8 m s-1. How long does the signal take?

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Signal travels 8km down copper wire. speed signal travels is 2x10^8 m s-1. How long does the signal take?

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  1. distance / speed = time

    8 km = 8000 m

    8000 m / 2*10^8m s^(-1) =

    8000 m*s / 2*10^8 m =

    You can do the rest.

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