Volcanic island arcs are produced by

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?

The protons in a nucleus are approximately 2 ✕ 10^−15 m apart. consider the case where the protons are a distance d = 1.93 ✕ 10^−15 m apart. calculate the magnitude of the electric force (in n) between two protons at this distance.