It typically take longer for a heavier object to slow down therefor, a train will take more time. <span />
To solve the exercise it is necessary to take into account the concepts of wavelength as a function of speed.
From the definition we know that the wavelength is described under the equation,

Where,
c = Speed of light (vacuum)
f = frequency
Our values are,


Replacing we have,



<em>Therefore the wavelength of this wave is
</em>
Examine the water molecules in the animation. After the wave has passed which of the following is true?