I felt bad because he was old with not much limbs left. I put my self up in his shoes to try and grasp what he felt at all times.
Even though the wave speed is calculated by multiplying wavelength by frequency, an alteration in wavelength does not affect wave speed. Rather, an alteration in wavelength affects the frequency in an inverse manner. A doubling of the wavelength results in a halving of the frequency; yet the wave speed is not changed.
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Answer:
i think all choices are correct
Explanation: