Draw the Bohr-Rutherford diagram for each of the isotopes listed Oxygen-18, Boron-10, excited fluorine-20

Estimate the schwarzschild radius (in kilometers) for a mini-black hole formed when a superadvanced civilization decides to punish you (unfairly) by squeezing you until you become so small that you disappear inside your own event horizon. (assume that the your weight is 50 kg)

In a series circuit the __ is the same at every point

What is a subatomic particle with a negative charge and very little mass?