Asked by Liz
I am stuck with both of these questions. Thanks in advanced!
1. If one tone has a frequency of 110 Hz and another tone is played near it with a tone of 113 Hz, the beat frequency is ___ Hz
2. A standing wave has 3 nodes in a string 20 m long. The wavelength of this wave is __ m rounded to the first decimal place
1. If one tone has a frequency of 110 Hz and another tone is played near it with a tone of 113 Hz, the beat frequency is ___ Hz
2. A standing wave has 3 nodes in a string 20 m long. The wavelength of this wave is __ m rounded to the first decimal place
Answers
Answered by
Damon
1) 3 Hz,
the difference frequency
sin a + sin b = 2 sin .5(a+b) cos.5 (a-b)
or
twice the average frequency times half the difference frequency
YOU HEAR TWO maxima per cycle (he square of the amplitude so you hear F1-F2 nor (1/2) (F1-F2)
the difference frequency
sin a + sin b = 2 sin .5(a+b) cos.5 (a-b)
or
twice the average frequency times half the difference frequency
YOU HEAR TWO maxima per cycle (he square of the amplitude so you hear F1-F2 nor (1/2) (F1-F2)
Answered by
Damon
2 I have no idea if the nodes at the end count as two of the three
I will assume yes so we have one node in the middle, the second harmonic
Adjacent nodes are (1/2) lambda apart
so the length of the string is a wavelength
I will assume yes so we have one node in the middle, the second harmonic
Adjacent nodes are (1/2) lambda apart
so the length of the string is a wavelength
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.