Carbon-14, which is present in all living tissue, radioactively decays via a first-order process. a one-gram sample of wood taken from a living tree gives a rate for carbon-14 decay of 13.6 counts per minute. if the half-life for carbon-14 is 5720 years, how old is a wood sample that gives a rate for carbon-14 decay of 4.4 counts per minute?

You are a researcher for a golf club manufacturer. you are given two identical looking cubes of a metal alloy. you are informed that they are made of the exact same material, but one is crystalline, whereas the other is amorphous. it is your job to determine which one is amorphous this one is more stress-resistant and is useful in reinforcing golf clubs. which of the following is the best way to determine which is which? a. determine the density of each cube. the more dense one is the amorphous solid. b. melt both cubes and look for a broader range of melting temperatures. the one that melts over a broader range of temperatures is the amorphous solid. c. determine the density of each cube. the less dense cube is the amorphous solid. d. melt both cubes and measure the range of melting temperatures. the one that melts over a narrower range of temperatures is the amorphous solid.