An Archaeologist in Turkey discovers a spear head that contains 79% of its original amount of C-14. Find the age of the spear head to the nearest year.

The age of the spear head is of 1938 yers.

Step-by-step explanation:

The amount of carbon 14 after years is given by the following equation:

In which Q(0) is the initial amount and r is the decay rate.

The half life of carbon 14 is 5700 years.

This means that

So

So

We have to find:

t for which Q(t) = 0.79Q(0). So

Rounding to the nearest year.

The age of the spear head is of 1938 yers.

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step-by-step explanation: