The dating math problem
Half-life is defined as the amount of time it takes a given quantity to decrease to half of its initial value.
The term is most commonly used in relation to atoms undergoing radioactive decay, but can be used to describe other types of decay, whether exponential or not.
The following tools can generate any one of the values from the other three in the half-life formula for a substance undergoing decay to decrease by half.
Please provide any three of the following to calculate the fourth value.
And this is not an appropriate math question." Myla Fairchild defended the question: "It's a date. Most parents have date night so I'm sure they're aware there's something called a date." Ms Douglas told the Huffington Post she did not think the question was appropriate.
"I consider myself to be a completely open-minded type person and as a single mum, try to teach my children about equality and about different types of people they will encounter.
Carbon-14 is produced in the atmosphere when neutrons from cosmic radiation react with nitrogen atoms: C ratio of 0.795 times that found in plants living today. Solution The half-life of carbon-14 is known to be 5720 years. Radioactive decay is a first order rate process, which means the reaction proceeds according to the following equation: is the quantity of radioactive material at time zero, X is the amount remaining after time t, and k is the first order rate constant, which is a characteristic of the isotope undergoing decay.
The halflife of carbon 14 is 5730 ± 30 years, and the method of dating lies in trying to determine how much carbon 14 (the radioactive isotope of carbon) is present in the artifact and comparing it to levels currently present in the atmosphere.
The carbon-14 undergoes radioactive decay once the plant or animal dies, and measuring the amount of carbon-14 in a sample conveys information about when the plant or animal died.