Zamir 1k Questions 0 Answers 0 Best Answers 1k Points View Profile 0 ZamirProfessional Asked: November 12, 20202020-11-12T12:47:49+00:00 2020-11-12T12:47:49+00:00In: Sound A sound source produces 40 crests and 40 troughs in 0.4 s. Find the frequency of the wave. 0 A sound source produces 40 crests and 40 troughs in 0.4 s. Find the frequency of the wave. Share Facebook You must login to add an answer. Username or email* Password* Remember Me! Forgot Password?