# Physics

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By what factor would you have to decrease the tension in a stretched string in order to decrease the wave speed by a factor of 3.5?

I know that v = sqrt(T/u) but am confused as to what to do?

• Physics -

To reduce v by a factor of 3.5, T must decrease by a factor of 3.5^2.

The formula v = sqrt(T/u) tells you that.

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