A standing wave of 603 Hz is produced on a string that is 2.67
m long and fixed on both ends.

Speed of the wave in the string is 3220 m/s

Explanation:

As we know that the length of the string is 2.67 m

Now for first harmonic state of the string we have

so we have

now the frequency of the wave is given as

f = 603 Hz

now speed of the wave is given as

so we have

come closer and become far apart and become steam/gas

the higher the current the higher the mag field around it the higher the influence on the compass