How can radiation be life-threatening and at the same time be useful in saving lives?

Which step in naming unsaturated hydrocarbons is used for alkenes but not alkynes

Which of these statements explains the difference between nuclear binding energy and the strong nuclear force ?

The graph indicates the running route for tobias. which best describes his run? from time 0 to 6, he went fast and then slowed down. from time 6 to 10, he was at his slowest. from time 12 to 14, he went very slow. from time 14 to 18, he went toward the starting point.