IDNLearn.com makes it easy to find answers and share knowledge with others. Discover in-depth and trustworthy answers from our extensive network of knowledgeable professionals.
This question deals with the physics of resonance and sound. The possible frequency of the pano key is 258hz.
The beat of a frequency is the difference (an absolute value) in the frequencies produced by the two waves.
Beat per second equals |f1 - f2| Where
ft = Frequency of the Tunning fork and
fp= Frequency of the Piano Key
Hence
3 = 261 - fp
Solving for fp,
fp = 261-3
= 258hz
Learn more about Audio Frequencies are:
https://brainly.com/question/27241481