A Sound Source of Frequency 1 100 Hz Moves at 40.0

question 19

Multiple Choice

A sound source of frequency 1 100 Hz moves at 40.0 m/s toward a listener who is at rest.What is the apparent frequency heard by the listener? (speed of sound = 340 m/s)

• A)1 230 Hz
• B)970 Hz
• C)980 Hz
• D)1 250 Hz
• E)870 Hz