What happens when too many electrons occur in one place?

When a lot of electrons get piled up in one place, they can push on each other so strongly that some of the electrons get pushed right off of the object. They end up getting pushed out through the air, the water, or whatever surrounds the object.

If you have too many electrons then you have a negatively charged atom.

Explanation:

d.7.5cm is your answer

the doppler effect is used by weather forecasters to measure 

moving clouds