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    Physics GCSE

    net decline as a ratio

    What net decline as a ratio means in Physics GCSE, as defined for AQA.

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    Reference: AQA

    The fall in a radioactive emission after a given number of half-lives, written as a ratio such as 1:16 after four half-lives.
    AQA · Half-lives and the random nature of radioactive decay (study guide)

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