A car battery can shock you simply because it has stored energy and power. This is normal, but can be dangerous depending on if the person has built up a static charge.
Yes It Can shock you
no
You will get a spark and maybe a shock. If you do this with a car battery, it may well explode and might cause injury.
Certainly, a loose wire on the car battery can cause the car not to start.
I am not stating this as a fact, but car batterys have been known to shock people, not kill though. A twelve volt battery will not shock you, I work with 12 volt batteries all the time, but when the current being drawn is so large in a car, the battery will deliver a pretty good shock. I'm not sayig to try it because I don't know what will happen, but the final answer is: no it will definitely not kill you.
Loose shock absorbers
the alternator is out
Interesting question. If the car's engine cause the car to reach the speed of sound, causing a shock wave, then the engine did indirectly cause a shock wave. The engine itself creating a shock wave however, is highly unlikely if not impossible. The moving parts in a typical combustion engine do not get anywhere near the speed of sound and any car that would reach the speed of sound would most likely have a jet engine like Thrust SSC.
Dead battery? Loose or corroded battery cables? Blown fusable link?
A dead cell in the battery will cause this. Also, any light that is on pulling power from the battery. Another possibility is a stuck relay.
Weak battery and no gas can both cause a no start.Weak battery and no gas can both cause a no start.
Sounds like a short on one of the battery cells. Get the local tyre and battery shop to check the battery out