Homework Help is Here – Start Your Trial Now!
Science
Advanced Physics
1. A train at rest emits a sound at a frequency of 929 Hz. An observer in a car travels away from the sound source at a speed of 38.7 m/s. What is the frequency heard by the observer? Assume the speed of sound in air to be 348 m/s. [ANS: 825.689 Hz.] F= = (348-38.7) (929) 38,7-

1. A train at rest emits a sound at a frequency of 929 Hz. An observer in a car travels away from the sound source at a speed of 38.7 m/s. What is the frequency heard by the observer? Assume the speed of sound in air to be 348 m/s. [ANS: 825.689 Hz.] F= = (348-38.7) (929) 38,7-

icon
Related questions
Question
how do you do question 1? this is a non graded practice worksheet
1.) A train at rest emits a sound at a frequency of 929 Hz. An observer in a car travels away from the sound source at a speed of 38.7 m/s. What is the frequency heard by the observer? Assume the speed of sound in air to be 348 m/s. [ANS: 825.689 Hz.] F = (348-38.7) (929) 38,7- Questions 2-3 A man is traveling on a bicycle along a straight road that runs parallel to and right next to some railroad tracks. While moving at 10 m/s, he hears the whistle of a train that is behind him, as shown in the figure. The frequency emitted by the train's whistle is 820 Hz but the frequency the man hears is 774 Hz. The speed of sound is 340 m/s. What frequency is heard by a stationary observer located between the train and the bicycle? [ANS: 797 Hz] 774= 340 + 10 (774) 340- 3. What is the speed of the train, and is the train traveling away from or toward the bicycle? [9.8 m/s away from the bicycle]
Transcribed Image Text:1.) A train at rest emits a sound at a frequency of 929 Hz. An observer in a car travels away from the sound source at a speed of 38.7 m/s. What is the frequency heard by the observer? Assume the speed of sound in air to be 348 m/s. [ANS: 825.689 Hz.] F = (348-38.7) (929) 38,7- Questions 2-3 A man is traveling on a bicycle along a straight road that runs parallel to and right next to some railroad tracks. While moving at 10 m/s, he hears the whistle of a train that is behind him, as shown in the figure. The frequency emitted by the train's whistle is 820 Hz but the frequency the man hears is 774 Hz. The speed of sound is 340 m/s. What frequency is heard by a stationary observer located between the train and the bicycle? [ANS: 797 Hz] 774= 340 + 10 (774) 340- 3. What is the speed of the train, and is the train traveling away from or toward the bicycle? [9.8 m/s away from the bicycle]
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 3 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer