Part c if you accidentally spill phosphorus-32 onto your shoe, how long would it take before 99.9% of the radioactive material has decayed so that you can safely wear the shoes again? express your answer as an integer. view available hint(s)

Step-by-step explanation:

The half-life of the phosphorus-32 is 14.3 days. The time constant of the isotope is:

The decay formula is:

The time related to the decayed proportion of the radioactive isotope is:

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5   1/4   miles per hour

step-by-step explanation:

15   3/4 / 3 = 5   1/4