Question
____ is used medically in ultrasound machines for both imaging (diagnostic) and treatment (therapeutic) purposes.
Answer
Sound is used medically in ultrasound machines for both imaging (diagnostic) and treatment (therapeutic) purposes.
Note: As a shortcut, for strings attached at both ends, the number of antinodes present will tell you which harmonic it is.
Note: As a shortcut, for open pipes, the number of nodes present will tell you which harmonic it is.
Note: Unlike strings and open pipes, one cannot simply count the number of nodes or antinodes to determine the harmonic of the wave in closed pipes. Therefore, when presented with a closed pipe, make sure to actually count the number of quarter-wavelengths contained in the pipe to determine the harmonic.
Note: Sound propagates through all forms of matter (but not a vacuum).
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____ waves have oscillations of wave particles perpendicular to the direction of wave propagation .
Transverse waves have oscillations of wave particles ____ to the direction of wave propagation .
____ waves have oscillations of wave particles parallel to the direction of wave propagation.
Longitudinal waves have oscillations of wave particles ____ to the direction of wave propagation.
____ in a wave refers to how far a point is from the e quilibrium position .
Displacement ( x ) in a wave refers to how far a point is from the ____.