Two Loudspeakers S₁ and S₂, 3

question 41

Multiple Choice

Two loudspeakers S₁ and S₂, 3.0 m apart, emit the same single-frequency tone in phase at the speakers. A listener directly in front of speaker S₁ notices that the intensity is a minimum when she is 4.0 m from that speaker see figure) . The listener now walks around speaker S₁ in an arc of a circle, staying 4.0 m from that speaker but increasing her distance from the other speaker. How far is she from speaker S₂ when she notices the first maximum in the sound intensity? The speed of sound in air is 340 m/s.

• A) 4.5 m
• B) 5.0 m
• C) 5.5 m
• D) 6.0 m
• E) 6.5 m

---

Definitions:

Supreme Court

The highest judicial court in a country or state, often having the final say in legal matters and interpretations of the law.

Class Action

A lawsuit filed by one or more plaintiffs on behalf of a larger group who are all affected by the same issue, allowing for collective legal action.

Demurrer

A legal objection that an opponent's point is irrelevant or invalid, while granting the factual basis of the point.

Directed Verdict

A ruling made by a judge in a jury trial, ordering the jury to deliver a specific verdict because the evidence presented could logically lead to only one conclusion.