This is a very wide open question and depends on what type of soccer match but in a important Champions League match they would use around 20 cameras
There are many universal chargers that can be used for video cameras. Examples of universal chargers that can be used for video cameras includes Dynex chargers and Sony chargers.
50
Shitloads.
34 cameras will cover the ground for broadcasting
3
6
There are many different cameras available at Cameras Direct. Cameras Direct has all sorts of digital cameras as well as video cameras. They have the Nikon D7000, Nikon D3200, Canon 7D, and many many more cameras for sale.
Many electronics companies sell video cameras, HD or otherwise. Samsung, Sony, Logitech, Fujifiilm are all companies that sell video cameras in HD. Many retailers will have them in the electronics department of the store.
3
one
Well 90 minutes in a soccer match 60 seconds in a minute. 90*60=5400 seconds
There are various brands of flash video cameras. Many digital cameras can save in flash format or convert to it. These include Kodak, Polaroid, Canon and Nikon.