Two strings are needed to string a tennis racket. The length of the string is to be about 11 to 12 meters.
It varies because racket head sizes vary and different types of rackets with a different number of cross strings and main strings. But it tends to have roughly 40 feet of string in a racket.
The head of a tennis racket is the entire section of the strings, and the part of the frame that surrounds the strings.
a prestrung racket is basically a tennis racket without the strings.
It depend on the kind of racket it is if it is a over size racket it has more string then a normal racket.
Yes, kicking the strings on your racket will damage the strings to some degree, depending on how hard you kick them. A light tap usually doesn't damage the strings, but a good kick could damage them.
The curved head frame holds the strings.
the strings in a tennis racquet are simply called "strings".
It is used to make racket plat
This depends on what you mean by "how many". If you mean how many individual pieces of string are used when stringing a racket the number would probably be one or two pieces. If by how many you wish to know the number of times the strings cross the head or the racket, the answer would vary by racket. The number of times the strings cross is called the "string pattern". To know this information you would have to look on the racket, probably around the throat and look for a number that looks something like "16x18" that means that there are 16 crosses and 18 mains. (Crosses span the narrower part of the head and can be described as running horizontally. The mains span the longer part of the head and are can be described as running vertically.)