Asked by Katy
                A tuning fork is used to tune a piano key. The tuning fork has a set frequency of 455 Hz. The beat frequency is measured at 21 Hz. What are the two possible frequencies the piano key could be to create that beat frequency?
	
501 Hz or 471 Hz
 
476 Hz or 434 Hz****
 
459 Hz or 477 Hz
 
432 Hz or 485 Hz
            
            
        501 Hz or 471 Hz
476 Hz or 434 Hz****
459 Hz or 477 Hz
432 Hz or 485 Hz
Answers
                    Answered by
            Anonymous
            
    455 +/- 21 = 476 or 434
so yes
    
so yes
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