The velocity of the wave on the string is given by
Solving the above equation,
The frequency of the wave 
and wave length is 
The velocity is 
Substituting numerical values,
The length of the string is 
Cleavage<span> is the tendency of a </span>mineral<span> to break along smooth planes parallel to zones of weak bonding. Fracture is the tendency of a </span>mineral<span> to break along curved surfaces without a definite shape. These </span>minerals<span> do not have planes of weakness and break irregularly.</span>
Answer:
The smallest integer is n = 4
Explanation:
Using the equation V= Sqrt(F/Linear density)
V= Sqrt(341/0.0120)
V= Sqrt(28416.7)
V= 168.57m/s
Path distance =[ (n +1)/2]lambda
But V= f(Lambda)
n lambda/2 =L
n = f2L/V
n = (20 × 2 × 16.86) / 168.57
n = 4.0007
The smallest integer is n= 4
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