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The equation of a wave on a string of li...

The equation of a wave on a string of linear density `0.04kgm^(-1)` is given by `y`=`0.02(m)` `sin[2 pi(t /(0.04(s)` -`(x /(0.50m) ]` The tension in the string is :
A) `6.25N`
B) `4.0N`
c) `12.5N`
D) `0.5N`

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