1. The problem statement, all variables and given/known data The frequency ratio of a semitone interval on the equally tempered scale is 2 1/12. A) Show that the ratio is 1.059 B) Find the speed of an automobile passing a listener in still air if the pitch of the car's horn drops a semitone between the times when the car is coming directly toward him and when it is moving directly away from him. 2. Relevant equations twords fL= v/λ + vL/λ away fL= v/λ - vL/λ 3. The attempt at a solution I'm not sure how to start part A, and i need that info for part b. please advise!