For a Diffraction Horn Loudspeaker, the Sound Emerges Through a Rectangular

question 41

Multiple Choice

For a diffraction horn loudspeaker, the sound emerges through a rectangular opening. The width of a diffraction horn is 0.14 m. If the speed of sound in air is 343 m/s, at what frequency is the diffraction angle $\theta$ equal to 35°?

• A)3300 Hz
• B)4300 Hz
• C)6300 Hz
• D)7700 Hz
• E)9200 Hz

---

Definitions:

China

A country in East Asia, the world's most populous nation, with a significant impact on global economy and geopolitics.

Japan

An island country in East Asia, known for its rich culture, technological advancements, and strong economy.

American Producers

Businesses or individuals in the United States that create or provide goods and services.

Oil Imports

The purchase of petroleum from foreign countries, essential for economies that consume more oil than they produce domestically.