When Tuning a Piano, a Technician Strikes a Tuning Fork

question 201

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 880πt,
​
Where t is the time (in seconds) .
​
What is the period of the function?
​

• A) sec
• B)440 sec
• C) sec
• D)880 sec
• E)88 sec