Assume you are given a sample of material and asked to determine its age. You the measure isotopes in the rock and determine that it has 125 mg of Radium-228 (the parent isotope) and 875 mg of Actinium-229 (the daughter isotope). How old is the rock sample if Radium-228 has a half life of 5.75 years?

Since the investigative question has two variables, you need to focus on each one separately. thinking only about the first part of the question, mass, what might be a hypothesis that would illustrate the relationship between mass and kinetic energy? use the format of "if…then…because…” when writing your hypothesis.

How is acceleration calculated? a. initial velocity - final velocity / timeb. initial velocity + final velocity / timec. final velocity - initial velocity / timed. final velocity / timele select the best answer from the choices provided0oood00save and exitnextmark this and return

Aforklift raises a 1,020 n crate 3.50 m up to a shelf. how much work is done by the forklift on the crate? the forklift does j of work on the crate.