Multiple Choice
You are driving along a highway at 25 m/s when you hear the siren of an emergency vehicle traveling at constant speed in the opposite direction on the other side of the highway. When the
Vehicle is approaching you, you hear the frequency of the siren as 2380 Hz, but when it is past you
The frequency becomes 1680 Hz. What is the speed of the vehicle? The speed of sound in air is 343
M/s)
A) 32 m/s
B) 50 m/s
C) 35 m/s
D) 41 m/s
E) 30 m/s
Correct Answer:

Verified
Correct Answer:
Verified
Q218: Which of the following quantities has units
Q219: Transverse waves travel at 43.2 m/s in
Q220: A capacitor C is connected in series
Q221: A string that is 0.15 m long
Q222: A pendulum of length L is suspended
Q224: An object having a fixed emissivity of
Q225: You drive 6.0 km at 50 km/h
Q226: When the current through a resistor is
Q227: If a flower is 6.5 cm wide,
Q228: The captain orders his starship to accelerate