Question

In establishing standing waves with a Slinky®, your wrist oscillates with f frequency of 8.0 Hz, and the velocity of the wave is 40 m/s. What is the wavelength of this wave?

A) 2.5
B) 5.0
C) 10.
D) 320

Answer 1

D. 320. Multiply 8.0 x 40 and you get 320

Answer 2

for any wave:

\(\sf \large wavelength*frequency=velocity \)

\(\sf \large wavelength=\dfrac{velocity}{frequency}=\dfrac{40~m/s}{8~/s}=5~m\)