(a) The graph to the right shows activity vs time for a radioactive isotope. In

Question

(a) The graph to the right shows activity vs time for a radioactive isotope. In this case, the activity is given as a percentage of the initial count rate (decays per time)att= 0. Estimate the half-life of this isotope in units of days.
d

(a) The graph to the right shows activity vs time for a radioactive isotope. In this case, the activity is given as a percentage of the initial count rate (decays per time)att= 0. Estimate the half - life of this isotope in units of days. (b) Use your value of half - life to calculate the time constant. Your value should be entered in units that will match your selection below. Time Constant:

Explanation / Answer

a) half life = 5 days b) time constant = 5/ln2 = 7.21 days

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