Ask Question
1 September, 19:19

Jenny and Fred both play a long note on their trombones. A stationary observer hears the sound increasing and decreasing repeatedly in loudness. Which of these must be true?

A. The sound waves from the two trombones have slightly different frequencies.

B. The sound waves from the two trombones have the same frequency.

C. The sound waves from the two trombones have slightly different amplitudes.

D. The sound waves from the two trombones have the same wavelength.

E. The sound waves from the two trombones have slightly different velocities.

+3
Answers (1)
  1. 1 September, 19:42
    0
    A. The sound waves from the two trombones have slightly different frequencies.

    Explanation:

    This is because, a difference in frequency of waves from two different sources would result in either constructive or destructive interference of the waves. Thereby, causing the observer to hear the sound increasing or decreasing.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “Jenny and Fred both play a long note on their trombones. A stationary observer hears the sound increasing and decreasing repeatedly in ...” in 📗 Physics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers