Capa11 - 1[1 point 10 tries Two identical sinusoidal waves...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
1 . [1 point, 10 tries] Two identical sinusoidal waves with wavelengths of 2.82 m travel in the same direction at a speed of 1.27 m/s. The second wave originates from the same point as the first, but at a later time. Determine the minimum possible time interval between the starting moments of the two waves if the amplitude of the resultant wave is the same as that of each of the two initial waves. Answer: 7.40e-01 s 7 2 . [1 point, 10 tries] A 0.0145 kg, 2.19 m long wire is fixed at both ends and vibrates in its simplest mode under a tension of 195 N. When a tuning fork is placed near the wire, a beat frequency of 5.00 Hz is heard. What are the possible frequencies of the tuning fork? (enter the smaller frequency first) Answer: 3.42E+01 Hz 4.42E+01 Hz 7 3 . [1 point, 10 tries] Two loudspeakers are placed on a wall 2.39 m apart. A listener stands 3.06 m from the wall directly in front of one of the speakers. The speakers are being driven by a single oscillator at a frequency of 348 Hz. What is the phase difference between the two waves then they reach the observer? Take the speed of sound as 343 m/s. Answer: 5.24e+00 rad 7 4 . [1 point, 10 tries] What is the frequency closest to 348 Hz to which the oscillator may be adjusted such that the observer hears minimal sound? Answer: 2.08e+02 Hz 7 5 . [1 point, 10 tries] Two speakers are driven by the same oscillator with frequency of 216 Hz. They are located 4.04 m apart on a vertical pole. A man really far away walks straight toward the lower speaker in a direction perpendicular to the pole, as shown in the figure.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/03/2009 for the course CHEMISTRY 1E03 taught by Professor Britz during the Spring '09 term at McMaster University.

Page1 / 5

Capa11 - 1[1 point 10 tries Two identical sinusoidal waves...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online