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A) What is the frequency of the wave?

B) how many complete waves are emitted in this time interval?

c) after .50 s, how far is the front of the wave from the source of the sound?

AnsA) V= (Lambda)(f)

f= V/Lambda = 330/.70= 471.4 Hz

Ans b) I dont know how to do this.. is this the frequency?

Ans c) Lambda = (.50) ( 330) = 165 m

Are the above answers correct? also, i'd appreciate it if you guys could help me for the second question ( part b )

thanks