Aradioactive isotope has a half-life of 40 years and a radioactivity level of 4 curies. how many years will it take for the radioactivity level to become 0.25?

Free points + brainliest? answer these correctly! as an object in motion becomes heavier, its kinetic energy a. increases exponentially b. decreases exponentially c. increases proportionally d. decreases proportionally

You want free points & brainliest? answer this drivers ed question correctly and i got you in which of the following situations should you use your vehicle's hazard lights? a. you're stopped on the side of the road with an engine that won't start. b. you're driving toward the shoulder because you hear a strange noise. c. you're driving in the rain and your headlights aren't functioning. d. you're driving slowly because you just spilled coffee on your lap.

With my drivers ed ! another name for dash lights is a. vehicle problem indicators b. vehicle warning indicators c. vehicle status indicators d. vehicle caution indicators