When charcoal is prepared from a living tree, it shows a disintergration rate of 15.3 disintergrations of ``^14C` per gram per minute. A sample form an ancient piece of charcoal shows ``^14C`activity to be 12.3 disintergrations per gram per minute. How old is this sample ? Half-life of ``^14C` is 5730 y.

When charcoal is prepared from a living tree, it shows a disintergration rate of 15.3 disintergrations of C^14 per gram per minute. A sample form an ancient piece of charcoal shows C^14 activity to be 12.3 disintergrations per gram per minute. How old is this sample ? Half-life of C^14 is 5730 y.

Sample of carbon obtained from any living organism has a decay rate of 15.3 decays per gram per minute. A sample of carbon obtained from very old charcoal shows a disintegration rate of 12.3 disintegrations per gram per minute. Determine the age of the old sample given the decay constant of carbon to be 3.839 xx 10^-12 per second

A piece of wood from the ruins of an ancient building was found to have a "^14C activity of 12 disintegrations per minute per gram of its carbon content. The "^14C activity of the living wood is 16 distintegrations per minute per gram. How long ago did the tree, from which the wooden sample came, die? Given half-life of "^14C is 5760 years.

A piece of ancient wood shows an activity of 3.9 disintergration per sec. per gram of .^(14)C . Calculate the age of the wood. T_(1//2) of .^(14) C=5570 years. Activity of fresh .^(14)C=15.6 disinteration per second per gram.

A piece of wood form the ruins of an ancient building was found to have a C^(14) activity of 12 disintegrations per minute per gram of its carbon content. The C^(14) activity of the living wood is 16 disintegrations/minute/gram. How long ago did the trees, from which the wooden sample came, die? Given half-life of C^(14) is 5760 years.

A piece of wood form the ruins of an nuclei an ancient building was found to have a .^(14)C activity of 12 disintegrations per minute per gram of its carbon content. The .^(14)C activity of the living wood is 16 disintegrations/minute/gram. How long ago did the trees, form which the wooden sample came, die? Given half-life of .^(14)C is 5760yers .

A radioactive sample had an initial activity of 28 disintegrations per minute. 30 minutes later, its activity became 14 disintegrations per minute. How many atoms of the radioactive nuclide were present intially ?