Answer:
v = 72.54 m/s
Step-by-step explanation:
We have,
Length of a guitar string is 0.62 m
Frequency of a guitar string is 234 Hz
For guitar string,
![L=2\lambda\\\\\lambda=(L)/(2)\\\\\lambda=(0.62)/(2)\\\\\lambda=0.31\ m](https://img.qammunity.org/2021/formulas/physics/middle-school/oncw5qny67htytyrriggdn8ptibl2jqk1t.png)
The velocity of the wave in the string is given by :
![v=f\lambda\\\\v=234* 0.31\\\\v=72.54\ m/s](https://img.qammunity.org/2021/formulas/physics/middle-school/8v41bzf8erlc1ciet49lj7av0kolakfmav.png)
So, the velocity of the waves in the string is 72.54 m/s.