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...
Carnot Engine: For a certain ideal Carnot engine, the hot reservoir is 35 C° higher than the cold reservoir. If this engine is to have an efficiency of 20%, what must be the temperature of the hot reservoir?
A. 70.0 K B. 140 K C. 175 K D. 210 K E. 245 K
Besides Earth, which terrestrial planet also has seasons?
A. Mercury B. Mars C. Venus D. Seasons are unique to Earth.
A newly formed protostar will radiate primarily at which wavelength?
A) visible light B) X-ray C) infrared D) ultraviolet E) radio
The exchange of mediating photons can produce:
a. neither a repulsive nor an attractive force. b. either a repulsive or an attractive force. c. a repulsive force. d. an attractive force.