12-52 if you want to play it acoustically too, 13-56 is my pick for it as its a metal tuning so might as well get metal strings. Kerry King uses 9-46s though for his C# tuning though, I was shocked.
Heavy enough that the strings won't buzz in that tuning. Probably 12-52 or 12-56. Have fun!
This is kind of a broad question. Some guitar strings are nylon (classical guitar) or steel (acoustic). For standard tuning, from top to bottom the strings are E A D G B E.
String cheese, Sock string
well it really depends on what kind of guitar it is
Nylon - it is a classical guitar.
There are guitar strings for nearly every pitch or resonance, and even some made out of horse hair like violin strings.
sound energy i believe
Nylon strings.
The type of guitar strings you need depends on the type of guitar you have. Acoustic guitars typically use steel strings, while classical guitars use nylon strings. Electric guitars use steel strings as well. Make sure to choose the right gauge (thickness) of strings for your playing style and preference.
It is down to personal preference as to which strings are best for an archtop guitar. Chromes and flatwound strings are both popular. Light gauge strings are preferable as they put less pressure on the neck.
The most standardize tuning for guitars both acoustic and electric is EADGBe(the lower note indicating this is the highest) with the A being at 440hz. This is only standard tuning and you can tune your guitar several different ways depending on what kind of music you are playing. My favorite open-tuning(tuning your strings to the note of an open chord such as G, Em, etc) is Em which is EBEGBe or E Maj which is EBEG#Be. For a fuller list of tunings, see trealted link.
numerous reasons, the biggest one is that as you play your guitar more, the strings stretch out and become looser. Even when you aren't playing just for tension on the strings cause them to stretch out slowly. also environmental factors can change the tension of the strings of the bow of the neck but these are only miner influences in most cases.