The diagram above illustrates a mode of vibration of a wire of length 125 cm. The speed of the waves along the wire is 120 ms-1. Use the diagram to answer questions 2 and 3.
Determine the frequency of the waves

sevoungn

1 year ago

Counting the waves in the diagram, You will notice it made 2 and half complete waves. So the wavelength will be 1.25m(which is the 125cm)/2.5 = 0.5
Then
v = fλ
f = v/λ
f = 120/0.5
f = 240Hz

Proprime

9 months ago

the answer should be 24

Sigmachan

1 year ago

the answer is wrong