Cracking the SAT Physics Subject Test
Here’s the pattern: Standing sound waves can be established in a tube that’s closed at one end if the tube’s length is equal to ...
Notice that, while an open-ended tube can support any harmonic, a closed-end tube can only support odd harmonics. Questions 16-1 ...
Since a closed-end tube can support only odd harmonics, the next higher harmonic frequency (the first overtone) is the third ha ...
THE DOPPLER EFFECT When a source of sound waves and a detector are not in relative motion, the frequency that the source emits m ...
frequency than the source emitted. In the same way, if the source moves toward the detector, the wavefronts pile up, and this re ...
then the detected waves have a lower frequency than they had when they were emitted by the source. The shift in frequency that o ...
where v is the speed of sound, vD is the speed of the detector, and vS is the speed of the source. The signs in the numerator an ...
The following is a chart of the four most common situations in which only one object (either the detector or source) moves. This ...
If there is no relative motion between the source and the detector, then there should be no Doppler shift, since vD = vS implies ...
source. What is the frequency of the waves as they’re received by the detector? Here’s How to Crack It Because the detector m ...
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Chapter 14 Comprehensive Drill See Chapter 17 for solutions. What is the wavelength of a 5 Hz wave that travels with a speed of ...
(B) 0.5 cm (C) 1 cm (D) 2 cm (E) 4 cm A string, fixed at both ends, supports a standing wave with a total of 4 nodes. If the le ...
Let AP be the amplitude of the resulting wave at point P, and AQ the amplitude of the resultant wave at point Q. How does AP com ...
(C) 1,000 Hz (D) 1,500 Hz (E) 2,000 Hz A bat emits a 40 kHz “chirp” with a wavelength of 8.75 mm toward a tree and receives an ...
Key Terms mechanical wave traveling wave crests troughs wavelength amplitude propagates transverse period frequency wavefronts s ...
intensity decibel level ...
Summary For traveling waves, in which the peaks and valleys visibly move along the length of a rope, the displacement y of each ...
are the positions where the pressure is below normal. Sound waves differ from waves on strings in that the molecules of a medium ...
Chapter 15 Optics Optics is the study of light and its interaction with devices such as mirrors, lenses, and prisms. Light (or v ...
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