1) The half-life of carbon 14 is 5600 years. Compute the rate of decay (constant) for this radioactive isotope (5 marks)
2) Traces of burnt wood along with ancient stone tools in an archaeological dig in Scotland were found to contain approximately 10% of the original amount of carbon 14. Using the value of the constant from part 1), calculate when the tree was felled and burned. (10 marks)