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

Calculate the decimal equivalent of the binary number 10101.

Using the diagram below, determine the medium where the sound beam will have the lowest intensity.

If the frequency of a wave increases by a factor of 10, what happens to the propagation velocity?

Calculate the % transmission at a boundary where the impedance of medium 1 is 2 Rayls and the impedance of medium 2 is 8 Rayls.

What type of wave is ultrasound?

An ultrasound wave propagates through the liver into a mass.  The sound speed in the mass is 1600 m/s.  Which of the following is a true statement?

If you add the 2 waves together in the following diagram, what is the amplitude of the resultant wave?

Using the diagram below; If the beam area is 2 cm2, what is the intensity of waveform 1?

Indicate which of the following statements is true with respect to the wave diagram below?