Carbon dating half life problem
How long does the pipe have to be to ensure that there is only 10% of the pollutants left in the kerosene?This means that we need a pipe that is 10.3 feet long in order for the pollutants to be reduced to 10% of their starting amount. However, I note that there is no beginning or ending amount given.How am I supposed to figure out what the decay constant is?After 5,730 years, the amount of carbon 14 left in the body is half of the original amount.If the amount of carbon 14 is halved every 5,730 years, it will not take very long to reach an amount that is too small to analyze.
Plutonium Plutonium 239 is a man-made radioactive isotope. Plutonium 239 has a half-life of 24,110 years, which means that it would take 240,000 years to decay to a safe amount.Plutonium 239 decays exponentially into lead, but it causes concerns for humans because the tiny particles of plutonium react with oxygen and water and can be extremely flammable.Since the half-life of Plutonium 239 is so high (even in comparison to the carbon 14 half-life of 5,730 years) humans must be very cautious of the way they dispose of plutonium.When an organism dies it ceases to replenish carbon in its tissues and the decay of carbon 14 to nitrogen 14 changes the ratio of carbon 12 to carbon 14.Experts can compare the ratio of carbon 12 to carbon 14 in dead material to the ratio when the organism was alive to estimate the date of its death.