In Joe's work in radiochemotherapy, he uses iodine-131 (half-life 8.0 days) in the treatment
of thyroid conditions. If his...?
In Joe's work in radiochemotherapy, he uses iodine-131 (half-life 8.0 days) in the
treatment of thyroid conditions. If his sample for treatment has to maintain an activity of
4.85 x 10^16 decays per second, how much time does he have until he must resupply a
sample that begins with 30.0g?

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.