1. You stand by the railroad tracks as a train passes by. You hear a 1 000-Hz frequency when the train approaches, which changes to 848 Hz as it goes away. How fast is the train moving? The speed of sound in air is 340 m/s. a. 15.7 m/s b. 37.8 m/s c. 28.0 m/s d. 21.2 m/s
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Given: - Original frequency (fo) = 1000 Hz - Frequency when the train is approaching (fa) = 1000 Hz - Speed of sound (v) = 340 m/s Using the formula for Doppler effect: fa = fo * (v + VT) / (v) Substitute the values: 1000 = 1000 * (340 + VT) / 340 Solve for Show more…
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