Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions

How many vibrations will a turning fork of frequency 280hz complete during the time sound travels forward in air by 20m . take speed of sound in air as 340



threfore, time=dist/speed

the frequency=280hz
therefore, no. of vibrations in 1s=280

Therefore, total no. of vibrations in 20m=280 x 17
                                                               =4760 vibrations.
0 0 0
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts