20 pointsmy brother jack found a piece of oak while hiking in an arizonan canyon. my brother jason was taking a geology class and he thought it might be from ancient times so they ran some experiments and found that the amount of carbon-14 (14c) was approximately 1/64 of the current atmospheric 14c levels. determine approximately how many years ago the tree was chopped down to be used for the firewood. 14c has a t1/2 of 5,750 years use the half life equation