What form(s) of attenuation are occurring in the areas indicated by the yellow arrows on the image below?

Calculate the degree of refraction at an interface where the speed of sound in the incident medium is 3080 m/s, in the transmitted medium is 1540 m/s, and the incident angle is orthogonal to the reflecting surface.

If you have 2 mediums that have no impedance mismatch, what will happen at their interface?

If the period of a wave is increased by a factor of 6, what happens to the frequency?

Which of the following cannot be changed by the sonographer?

Compare two sound waves, A and B.  The frequency of wave A is 3 times that of wave B.  How does the period of wave A compare with the period of wave B?

Using the wave diagram below; If the x-axis for the 2 waveforms is distance, the wavelength for waveform 1 is ____________.

At which of the following angles are both the sin and cosine negative?

Using the diagram below; If waveform 1 and waveform 2 have the same frequency, how can you account for their different appearances?

What type of incidence is indicated at the boundary between medium 3 and medium 4?       Medium       1            2           3             4