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Frequency of a Stretched String and Interference Patterns

Explore the behavior of a stretched string with different frequencies and the interference patterns created by two identical sources.

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Frequency of a Stretched String and Interference Patterns

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  1. 0 of 250 30 A stretched string has a fundamental frequency of 165 Hz. Someone nearby sings a note at a frequency of 495 Hz. As a result, the string: • Will begin to vibrate • Will not vibrate at all • Might vibrate…depends on the song

  2. 0 of 250 30 The sources A and B are identical, emitting waves with wavelngth . Waves from each source travel along the path shown. What distance smallest X is necessary for the waves to be completely out of phase at the Line shown? • X= D • X= D/2 • X= /4 • X=  • X= /2 A D B X X

  3. P2 A D P1 B 0 of 250 30 The two sources A and B are identical, emitting waves of wavelength . They are separated by a distance D=1.5, equally spaced from the origin along the y-axis. What type of interference occurs at point P1? • Fully destructive • Mostly destructive • Fully constructive • Depends on the distance of P1 from the origin

  4. P2 A D P1 B 0 of 250 30 The two sources A and B are identical, emitting waves of wavelength . They are separated by a distance D=1.5, equally spaced from the origin along the y-axis. What type of interference occurs at point P2? • Fully destructive • Mostly destructive • Fully constructive • Depends on the distance of P2 from the origin

  5. P2 A D P1 B 0 of 250 30 Are there any other points besides P1 where the interference is fully constructive, and if so, how many such points (including P1) are there? • No other points • There are 2 total • There are 4 total • There are 6 total

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