An archeologist finds a skull in Piltdown Park in England. He discovers that only 3% of the original amount of carbon-14 is still present in the skull. If the decay constant for carbon-14 is 11×10−5 , estimate the age of the skull.

or 8.86 hours

Step-by-step explanation:

The quantity of material left after a time, t, during a radioactive decay is given by

is the initial quantity, is the decay constant

is the fraction left.

Substituting given values from the question,

This is about 8.86 hours