A500g sample of potassium-40 is left to decay radioactively. after 3.9 x 109 years, about how many grams of potassium-40 are expected to remain? [the half-life of potassium-40 is 1.3 x 109 years.]

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.

Which lists correctly orders nuclear reactions from most radioactive waste generated to least waste generated within a given period of time? o a. radioactive decay, nuclear fission, nuclear fusion o b. radioactive decay, nuclear fusion, nuclear fission o c. nuclear fusion, nuclear fission, radioactive decay o d. nuclear fission, nuclear fusion, radioactive decay

What describes the particles in a liquid