1. The wave speed of a wave through a medium is equal to the frequency times the wavelength. When the frequency changes, the wavelength must change to compensate. Why can't the velocity of the wave change?
a. The velocity of a mechanical wave is dependent on the medium
b. The wavelength is separate from the velocity, so it can change while the wavelength cannot
c. The velocity of the wave cannot change because it is set by the force that starts the oscillation
2. If a water wave has a velocity of 4.5 m/s and has a frequency of 25 Hz, what is the wavelength of the wave?
a. 0.80 m
b. 5.6 m
c. 0.18 m
3. Two waves approach each other on the same string. Which statement best describes the process of events that will happen?
a. The waves will approach, interfere with each other, then pass through each other after interfering, unchanged
b. The waves will approach, then they will bounce off each other and move away from each other as normal
c. The waves will approach, interfere with each other, then this interference will cancel them both out