Magnesium (mg) has 12 protons and an atomic mass of 24. how many neutrons does magnesium have?

When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great.d) about 10 times as great.

The total amount of energy contained in an object

Atoms containing radioactive nuclei are called