(c) A) goods train having 10 containers of 8m each carrying Uranium Oxide. The dose rate at 3m from the train wa measured to v be 48μs. The train needs to be parked overnight at a station. Calculate the minimum distance from the train where a barrier must be placed such that the total dose at the barrier does not exceed 10μSv for a 10 hou parking period. (d) Find the Q value and a particle energy for the decay

Cow's milk produced near nuclear reactors can be tested for as little as 1.00 pCi of  I per liter, to check for possible reactor leakage. What mass of  I has this activity? (answer in ×10 g)

(a) A sample of a radioactive isotope contains N nuclei at time t. At time (t + At), it contains (N-AN) nuclei of the isotope. For the period At, state, in terms of N, AN and At, (i) the mean activity of the sample, activity = (ii) the probability of decay of a nucleus. probability = [1] [1] (b) A cobalt-60 source having a half-life of 5.27 years is calibrated and found to have an activity of 3.50 x 105 Bq. The uncertainty in the calibration is +2%. Calculate the length of time, in days, after the calibration has been made, for the stated activity of 3.50 x 105 Bq to have a maximum possible error of 10%.

A particular radioactive source produces 100 mrad of 2-MeV gamma rays per hour at a distance of 1.0 m. (a) How long could a person stand at this distance before accumulating an intolerable dose of 1 rem? (b) Assuming the gamma radiation is emitted uniformly in all directions, at what distance would a person recieve a dose of 10 mrad/h from this source?   dont provode hand written solution