Radioactivity

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The activity of a sample of a radioactive substance is the number of nuclei which disappear per unit of time and represents the speed of decay.

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publisher proyectonewton 19/12/2025 publisher indra_2013 19/12/2025 publisher INTEF . 19/12/2025 publisher INTEF 19/12/2025 author José Villasuso Gato 19/12/2025 publisher Institute of Educational Technologies (ITE) 19/12/2025 editor Institute of Educational Technologies (ITE) 19/12/2025 technical validator Jesús Manuel Muñoz Calle 19/12/2025