Suppose a person ingests equal amounts of two nuclides, both of which are beta emitters (of roughly equal energy). nuclide a has a half-life of 8.5 hours and nuclide b has a half-life of 15.0 hours. both nuclides are eliminated from the body within 24 hours of ingestion. which of the two nuclides produces the greater radiation dose?

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles

Lab reagent, hypothesis test. a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl. these six measurements are assumed to be an srs of all possible measurements from solution. they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution. carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.

The fact that the total amount of energy in a system remains constant is a(n)