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A radioactive substance of half life 100 days whi age energy 5 x 10-7 ergs is used to drive a therm cell to have an efficiency 10%, calculate the am radioactive substance required to generate 5 W c

A radioactive substance of half life 100 days whi age energy 5 x 10-7 ergs is used to drive a therm cell to have an efficiency 10%, calculate the am radioactive substance required to generate 5 W c

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A radioactive substance of half life 100 days which emits ß-particles of aver- age energy 5 × 10-7 ergs is used to drive a thermoelectric cell. Assuming the cell to have an efficiency 10%, calculate the amount (in gram-molecules) of radioactive substance required to generate 5 W of electricity.
Transcribed Image Text:A radioactive substance of half life 100 days which emits ß-particles of aver- age energy 5 × 10-7 ergs is used to drive a thermoelectric cell. Assuming the cell to have an efficiency 10%, calculate the amount (in gram-molecules) of radioactive substance required to generate 5 W of electricity.
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