Answer:
sorry I can't help you because the diagram is not there and I can't get the answer without it
No you can not copy and paste a picture of a problem i believe
Answer:
frequency= 165Hz
period= 
Step-by-step explanation:
1. To calculate the frequency using the formula:
f = v/λ
where,
f=frequency (what the question asked)
v=speed of wave (given in the question=330m/s)
λ=wavelength (given in the question=2m)
SO,

= 165Hz
2. To calculate the period use the formula:
since 
therefore, 
where,
f= frequency (what we solved above=165Hz)
T= period (what the question asked)
SO,

Answer:
answer is -6 , -6
this is my answer I just tried I don't know it right or wrong I just helping you