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When Tuning a Piano, a Technician Strikes a Tuning Fork

Question 362

Multiple Choice

When tuning a piano, a technician strikes a tuning fork for the A above middle C and sets up a wave motion that can be approximated by ​
Y = 0.001 sin 850πt,
​
Where t is the time (in seconds) .
​
The frequency is given by f = 1 / p.What is the frequency of the note?
​


A) 85 cycles/sec
B) When tuning a piano, a technician strikes a tuning fork for the A above middle C and sets up a wave motion that can be approximated by ​ Y = 0.001 sin 850πt, ​ Where t is the time (in seconds) . ​ The frequency is given by f = 1 / p.What is the frequency of the note? ​ A) 85 cycles/sec B) cycles/sec C) cycles/sec D) 850 cycles/sec E) 425 cycles/sec cycles/sec
C) When tuning a piano, a technician strikes a tuning fork for the A above middle C and sets up a wave motion that can be approximated by ​ Y = 0.001 sin 850πt, ​ Where t is the time (in seconds) . ​ The frequency is given by f = 1 / p.What is the frequency of the note? ​ A) 85 cycles/sec B) cycles/sec C) cycles/sec D) 850 cycles/sec E) 425 cycles/sec cycles/sec
D) 850 cycles/sec
E) 425 cycles/sec

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