A radioactive source in the form of a metal sphere of diameter 10^-3 m emits beta particles at a constant rate of 6.25 *10^10 particles per second. If the source is electrically insulated
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A radioactive source in the form of a metal sphere of diameter 10^-3 m emits beta particles at a constant rate of 6.25 *10^10 particles per second. If the source is electrically insulated, how long will A radioactive source in the form of a metal sphere of diameter 10^-3 m emits beta particles at a [...]