A point charge, Q placed a distance, r in an electric field. E is maintained at a potential V. The force, F experienced by the point charge can be expressed as​

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)

Newtons view of arrangement of the universe. don't copy from anywhere.

What is an electric motor? explain its operation. 2-3 sentence