Scouts at a camp shake the rope bridge they have just crossed and observe the wave crests to be 9.70 m apart. If they shake the

Question

Igoryamba

2 years ago

9

Scouts at a camp shake the rope bridge they have just crossed and observe the wave crests to be 9.70 m apart. If they shake the

bridge twice per second, what is the propagation speed of the waves (in m/s)?

Physics

1 answer:

Effectus [21] · Answer 1 · 2022-01-12T12:01:42+03:00

Answer:

<em> The speed of the wave is 19.4 m/s</em>

Explanation:

The wave's crest to crest distance (the wavelength of this rope's wave) λ= 9.70 m

The bridge is shaken twice, meaning that two wavelengths passed a given point on the rope per sec. The frequency of a wave is the amount of that wave that passes a given point in a second.

this means that the frequency f = 2 Hz

The speed of a wave = fλ = 9.70 x 2 =<em> 19.4 m/s</em>