Question

question 20 (1 point) use the information and the model to answer the following question. a student moves a honing fork that rings at a constant frequency. the student moves the honing fork to the left at a constant speed while observers are located at points w, x, y, and z. which observer hears the lowest frequency? w z y x

Explanation:

Step1: Recall Doppler - effect concept

The Doppler - effect for sound states that when a source moves away from an observer, the observed frequency is lower. When the source moves towards an observer, the observed frequency is higher.

Step2: Analyze the motion of the source relative to observers

The source (the ringing box) is moving to the left. Observer Z is on the right - hand side of the source's motion. As the source moves to the left, it is moving away from observer Z. Observers W, X, and Y are not moving away from the source as directly as Z is in the context of the source's left - ward motion.

Answer:

B. Z