Two Trumpet Players Are Both Playing a Pitch with a Frequency

question 40

Multiple Choice

Two trumpet players are both playing a pitch with a frequency of 440 Hz,corresponding to the musical pitch A above middle C.However,one of the trumpet players is marching away from you so that you hear a beat frequency of 4 Hz from the two trumpets.With what speed is the departing trumpet player moving away from you? (The speed of sound in air is 340 m/s)

• A)3.12 m/s
• B)3.09 m/s
• C)3.06 m/s
• D)3.00 m/s
• E)2.95 m/s

---

Definitions:

Saddles

Seats for riders on the back of an animal, typically horses, designed to support the rider's posture.

Government Revenue

Funds collected by the government from various sources, including taxes, fees, and charges, used to fund public services and provisions.

Tariff

A tariff is a tax or duty imposed by a government on goods imported or exported.

Domestic Quantity Demanded

The total amount of a good or service that consumers in a particular country want to buy at given prices.