At a certain instant a piece of radioactive material contains `10^(12)` atoms. The half life of material is 30 days. Calculate the no. of disintegrations in one second

Half life of a radioactive material is 3600 years. Calculate the average life

Half life of a radioactive material is 3600 years. Calculate the decay constant.

The half-life of a radioactive substance is 40 days. A sample of it contains 1 mole nuclie. Calculate the number of disintegrations in the first second.

The half-life of a radioactive substance is 60 days. A sample of it contains 1 mole nuclide. Calculate the number of disintegrations in the first second.

At any given time a piece of radioactive material (t_(1//2)=30 days) contains 10^(12) atoms. Calculate the activity of the sample in dps.

The rate of disintegration of a radioactive element at any instant is 10^3 dps. If the half-life of that element is 1 second, then what is its rate of disintegration after 1 second and after 3 second?

A sample contains 10 mg of radioactive material of half life 270 days. The mass of remaining radioactive material after 540 days will be