A radioisotope has half life of 10 years. What percentage of the original amount of it would you expect to remain after 20 years?

Radium Ra^236 has a half-life of 1590 years. How much of the original amount of Ra^236 would remain after 6360 year ?

Radium Ra^236 has a half-life of 1590 years. How much of the original amount of Ra^236 would remain after 6360 year ?

A radioisotope of silver has half-life of 20 minutes.What fraction of the original mass would remain after one hour?

A radioactive isotope has a half life of T years. It radius to 3.125% of its original value in

A radioisotope has a half life of 5 years. The fraction of the atoms of this meterial that would decay in 15 years will be

The radioactive isotope .^(137)Cs has a half life period of 30 years. Staring with 1 mg of .^(137)Cs . How much would remain after 120 years?

A radioactive isotope Cs^(137) has a half life period of 30 years. Starting with 1 mg of Cs^(137) how much would remain after 120 years?

A radioactive isotope Cs^(137) has a half life period of 30 years. Starting with 1 mg of Cs^(137) how much would remain after 120 years?