HELP PLS .. The half-life of potassium-44 is 22 minutes. It decays into calcium-44. After 66 minutes, what fraction of the original amount of potassium-44 in a sample
will still be potassium?

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

What is the increase in density of a medium due to wave travel?

Against his financial advisor's advice, frank has decided to invest his money in some risky stocks because he once made quite a bit of money in the stock market. his decision illustrates a. the representativeness heuristic b. overconfidence c. the availability heuristic d. confirmation bias select the best answer from the choices provided