Answer to Question #174196 in Physics for Joshua Musyoki

Question

A tuning fork of frequency 512Hz is used to tune a piano. The beat frequeny 

observed is 8Hz. What is the frequency of the piano ? How do you ascertain 

the answwer you have chosen is the cdorrect one ?. ( NOTE THAT THERE ARE 

TWO PROBABLE ANSWERS HERE. I WANT TO KNOW HOW YOU WILL GO 

ABOUT ASCERTAINING WHICH IS CORRECT?)

Answer 1

$$f_1=512+8=\ 520\ Hz\\f_2=512-8=\ 504\ Hz\\$$

All answers are correct.