Spatial peak intensity refers to the peak value in time.

The thickness of the matching layer is:

What occurs if two waves of different frequencies combine?

These parameters are determined only by the sound source:

With a 5 MHz transducer the sound wave is traveling through a medium at a speed of 1500 m/s.  The depth is decreased from 8 cm to 4 cm.  What happens to the frequency?

The power of a wave is doubled. Intensity is also doubled. What must have happened to beam area?

Huygen’s principle relates to:

A reduction of intensity to one half its original value is _________ dB.

A sound wave leaves the transducer, travels through blood with a speed of 1560 m/s.  One second later the returning echo is received by the transducer. What was the depth of the reflector?

The intensity of a beam is 50 mW/cm2.It is increased by 3 dB. What is the new intensity?