Harp.
Violin, viola, cello, double bass do not have frets and they can be played as pizz (plucked)
The kutiyapi, or kudlong, is a boat-shaped plucked string instrument from the Phillipines. It has frets and is often heavily carved. A parallel-string bamboo zither
electric guitars and 4 and 5 string banjos
harp
Yes but metal frets will let the string resonate better
It depends on the scale of the instrument, but the higher the frets are the closer they are together... no two frets are the same!
A zhongruan is a plucked long-necked lute-like string instrument of Chinese origin, with four strings and twenty-four frets.
The kutiyapi, or kudlong, is a boat-shaped plucked string instrument from the Phillipines. It has frets and is often heavily carved. A parallel-string bamboo zither
electric guitars and 4 and 5 string banjos
harp
Yes but metal frets will let the string resonate better
found on wikipedia: A nyckelharpa (literally "key harp", plural nyckelharpor or sometimes keyed fiddle) is a traditional Swedish musical instrument. It is a string instrument or chordophone. Its keys are attached to tangents which, when the key is depressed, serve as frets to change the pitch of the string
sitar (like a western guitar) tabla (like bongos) tambura (plays the drone, string instrument with no frets)
It depends on the scale of the instrument, but the higher the frets are the closer they are together... no two frets are the same!
Turning the peg or moving frets makes the pitch (frequency) of a guitar string go higher or lower.
By holding down different frets and strum the string.
An open E is when you pluck your E string only, without touching the frets.
A 7 string guitar has an additional low note - usually tuned to B.