A car horn emits a frequency of 400 Hz. A car traveling at 20.0 m/s sounds the horn as it approaches a stationary pedestrian. What frequency does the pedestrian hear? The speed of sound in air is 343 m/s
A) 200 Hz
B) 375 Hz
C) 400 Hz
D) 425 Hz
E) 450 Hz
D
You might also like to view...
For an eye that is 2.4 cm in diameter, what must be the range of focal lengths of the lens to focus objects from the near point (25 cm) to infinity on the retina?
What will be an ideal response?
In which direction does the daily motion of the Moon occur in the sky, against the background stars, when viewed from the Earth?
a. Toward the west b. Toward the east c. Toward the north celestial pole in the summer and the south celestial pole in the winter d. No predictable pattern can be discerned
Under the right conditions, it is possible to see multiple images of the same galaxy in one particular direction.
Answer the following statement true (T) or false (F)
Give an estimate of the number of steps in the stairway of a ten-story building.
A. 101 B. 102 C. 103 D. 104