Which describes constructive interference?

The function of the damping material in the transducer housing is to do all of the following EXCEPT: _________

A sound wave is created by a transducer, reflects off an object, and returns to the transducer.  The go-return time is 26 µs.  What is the depth of the reflection?

Attenuation encompasses:

Diffraction is the

If the frequency of sound is above 20 kHz, it is called

An ultrasound transducer converts

Pulse duration is _____ related to frequency

2.  Giving children choices of activities is not a good idea, they will not participate in everything the teacher has planned.

4.  An appropriate guidance technique is using logical consequence.