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Physics 2001 NECO Past Questions

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46

In 24 days a radioactive isotope decreases in mass from 128g to 2g. What is the half-life of the radioactive material?

  • A. 2.54 days
  • B. 4.00 days
  • C. 4.80 days
  • D. 6.00 days
  • E. 8.00 days
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