Life and Physical Sciences Radioactive Decay. Iodine-131 has a decay rate of 9.6% per day. The rate of change of an amount N of iodine-131 is given by d N d t = − 0.096 N , where t is the number of days since decay begin. a. Let N 0 represent the amount of iodine-131 present at t = 0 . Find the exponential function that models the situation. b. Suppose 500 g of iodine-131 is present at t = 0 . How much will remain after 4 days? c. After how many days will half of the 500 g of iodine-131 remain?
Life and Physical Sciences Radioactive Decay. Iodine-131 has a decay rate of 9.6% per day. The rate of change of an amount N of iodine-131 is given by d N d t = − 0.096 N , where t is the number of days since decay begin. a. Let N 0 represent the amount of iodine-131 present at t = 0 . Find the exponential function that models the situation. b. Suppose 500 g of iodine-131 is present at t = 0 . How much will remain after 4 days? c. After how many days will half of the 500 g of iodine-131 remain?
Solution Summary: The author calculates the exponential function for the differential equation dNt=-0.096N.
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