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Author Question: What are beats and how are they produced? What will be an ideal ... (Read 52 times)

Collmarie

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on: Jul 29, 2018
What are beats and how are they produced?
 
  What will be an ideal response?

Question 2

Why will a struck tuning fork sound louder when it is held against a table?
 
  What will be an ideal response?


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ntsoane kedibone

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: Beats are the sequence of alternating reinforcement and cancellation (constructive and destructive interference of two sets of superimposing waves differing in frequency, and heard as a throbbing sound. Beats have a frequency of their own equal to the difference between the two wave frequencies. Beats are evident when a pair of slightly mismatched tuning forks is sounded, and when a pair of whining diesel engines run side by side.

Answer to Question 2

Answer: When the vibrating tuning fork is held against a table, the large area of the table is forced into vibration. Compared with the surface area of the bare tines of a tuning fork, the larger area of the table sets a greater amount of air into vibration, which in effect amplifies the sound of the vibrating tuning fork.


Collmarie

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Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

Joy Chen

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Reply 3 on: Yesterday
Excellent

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