Describe at least one technological application of radioactive decay that can benefit human health.

Which two objects have the greatest gravitational force acting between them

From center station, a train departs every 30 minutes on the fast line and a train departs every 50 minutes on the state line. if two trains depart from center station at 8: 00 a.m., one on each of the two lines, what is the next time that two trains, one on each line, will depart at the same time?

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine