A Whistle Is Whirled Around in a Horizontal Circle 120

question 187

Multiple Choice

A whistle is whirled around in a horizontal circle 120 times a minute at the end of a piece of string 1.5 m in length. If the standard frequency of the whistle is 550 Hz, calculate the difference between the highest and lowest frequencies heard by a stationary observer assume the speed of sound in air is 343 m/s) .

• A) 58 Hz
• B) 64 Hz
• C) 61 Hz
• D) 32 Hz
• E) 29 Hz

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Definitions:

Lymph Vessels

The network of vessels that carry lymph, a clear fluid rich in white blood cells, throughout the body as part of the lymphatic system.

Blood Plasma

The liquid component of blood that carries blood cells and other substances throughout the body, constituting about 55% of blood's volume.

Phlebitis

Inflammation of a vein.

Thrombophlebitis

Inflammation of a vein associated with the formation of a blood clot.