Two speakers in an automobile emit sound waves that are in phase at the speakers. One speaker is 40 cm ahead of and 30 cm to the left of the driver's left ear. The other speaker is 50 cm ahead of and 120 cm to the right of the driver's right ear. Which of the following wavelengths is(are) in phase at the left ear for the speaker on the left and the right ear for the speaker on the right?
a. 10 cm
b. 20 cm
c. 650 cm
d. All of the wavelengths listed above.
e. Only the wavelengths listed in (a) and (b).
e
You might also like to view...
Why are volcanoes so large on Venus and on Mars?
What will be an ideal response?
Jovian planets
a. have rings and large numbers of moons. b. all have many moons, but only Saturn has rings. c. have moons, but Uranus and Neptune have only one or two. e. are massive and rotate slowly.
Is it possible for two force lines of a magnetic field to intersect? Explain
A boy on a bicycle approaches a brick wall as he sounds his horn at a frequency 400.00 Hz
The sound he hears reflected back from the wall is at a frequency 408.00 Hz. At what is the speed is the boy riding his bicycle toward the wall? Assume the speed of sound in air is 340 m/s. A) 3.68 m/s B) 333 m/s C) 6.67 m/s D) 6.80 m/s E) 3.37 m/s