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>
The answer is calcium. I just did it and it was correct
Answer:
agear lever or agear stick is the lever that you use to change gear in acar or other vehicle