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physical science

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If a sample emits 1000 counts per second when the detector is 1 meter from the sample, how many counts per second would be observed when the detector is 2 meters from the sample?

  • physical science - ,

    Can you answer this please !

  • physical science - ,

    Doubling the distance will result in a count of (1/2)^2= 1/4 the original
    count. 1/4 of 1000 = 250 counts per minute.

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