If you can jump it and get it running again, drive it for a few miles and then it dies again, it is the alternator. Buy a new alternator and it will fix the problem assuming you do not have bad connections "wires" in your charging system "your alternator and your battery".
There are 2 fans that would be running while you are driving and that is normal... the compressor fan if you have the air conditioner running and the radiator fan runs to help keep the radiator cool while the engine is on.
yes.
About a zillion things, one would be a bad fuel pump. If it will jump start and drive a few miles then die again replace your alternator.
faulty ignition switch
It is important to maintain speed while driving, unless coming to a stop. A car would decelerate if there was not enough fuel or electricity to keep the car running.
Fuel pump failure is one possibility.
yes
blown engine, out of gas janitorial duties.
The clogging of your fuel injectors or carburetor jets may induce vapor lock.See the link listed below:
could be the fuel pump
Keep the key in the ignition, stupid...
Vapor lock!