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AP Physics 2
14.3 Boundary Behavior of Waves and Polarization
14.2 Periodic Waves
IntermediateMCQMathematicalConceptual13.3k
A rectangular glass container filled three-quarters high with liquid solvent. At the top left above the liquid surface, a rectangular block labeled 'Transducer' is drawn. Parallel horizontal lines representing wave crests propagate downward through the air region above the solvent line and continue into the liquid solvent region. In the liquid solvent region below the liquid surface line, the distance between adjacent parallel horizontal lines is four times wider than in the air region. No other labels, lines, text, or axes appear.
Ultrasonic wave entering liquid solvent from air.
An ultrasonic transducer operating at a frequency of \(40 \text{ kHz}\) generates longitudinal sound waves in air that travel into a bath of liquid chemical solvent. The speed of sound in air is \(340 \text{ m/s}\), and the speed of sound in the liquid solvent is \(1360 \text{ m/s}\). Which of the following correctly identifies the frequency \(f_{\text{solvent}}\text{ control}\) and wavelength \(\lambda_{\text{solvent}}\text{ control}\) of the ultrasonic wave inside the solvent?

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