Which should he write in the "Use" section for X-rays?
music broadcasts
luggage inspections
night-vision goggles
digital photographs

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.

On average 8 bananas make up one pound. the price is four pounds for 5.00. you must buy 25 bananas.what is your cost?

What is the speed vfinal of the electron when it is 10.0 cm from charge 1?