# CAPA 8 - gaitons Set 8 Due Fri Apr 4 2008 at 23:59 1 1[1...

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

gaitons Set 8, Due Fri, Apr 4, 2008 at 23:59 1. 1 . [1 point, 10 tries] Two loudspeakers emit sound waves along the x-axis . Speaker 2 is 1.5 m behind speaker 1. Both loudspeakers are connected to the same signal generator, which is oscillating at 324.0 Hz. What is the phase difference? (Assume v sound =340.0 m/s) Answer: 8.98e+00 rad 2. 2 . [1 point, 10 tries] The speakers are now placed side by side. If the wire to speaker 1 is passed through a box that delays the signal by 1.29 ms, what is the new phase difference? Answer: 2.63e+00 rad 3. 3 . [1 point, 10 tries] Waves from a radio station have a wavelength of 311 m. They travel by two paths to a home receiver 22.7 km from the transmitter. One path is a direct path, and the other is by reflection from a mountain directly behind the home receiver. What is the minimum distance from the mountain to the receiver that produces destructive interference at the receiver? (Assume that no phase change occurs on reflection from the mountain.) Answer: 7.78e+01 m 4. 4 . [1 point, 10 tries] A 0.0115 kg, 2.14 m long wire is fixed at both ends and vibrates in its simplest mode under a tension of 182 N. When a tuning fork is placed near the wire, a beat frequency of 4.80 Hz is heard. What are the possible frequencies of the tuning fork? (enter the smaller frequency first)

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

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 3

CAPA 8 - gaitons Set 8 Due Fri Apr 4 2008 at 23:59 1 1[1...

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

View Full Document
Ask a homework question - tutors are online