The two cars have identical horns, each emitting a frequency of fs = 410 Hz. One of the cars is moving with a speed of 8.0 m/s toward a bystander waiting at a corner and the other car is parked. The speed of sound is 343 m/s. What is the beat frequency heard by the bystander? my attempt at the solution: fo = 410(343)/(343 - 8.0) = 419.791 Hz fb = f2 - f1 = 419.791 - 410 = 9.791 Hz i keep getting 9.79 Hz as my answer. i keep getting it wrong (thats what CAPA is telling me). can some one lead me in the right direction or tell me what i'm doing wrong??? Thank you.