A 1056-Hz Tuning Fork Is Sounded When a Piano Note

question 75

Multiple Choice

A 1056-Hz tuning fork is sounded when a piano note is struck. You hear three beats per second. What is the frequency of the piano string?

• A)1053 Hz
• B)1056 Hz
• C)1059 Hz
• D)2112 Hz
• E)not enough information

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Definitions:

AV Node

The atrioventricular node, a part of the cardiac conduction system that delays the electrical impulse before it passes to the ventricles.

AV Bundle

The atrioventricular bundle (bundle of His), a collection of heart muscle cells specialized for electrical conduction that transmits the electrical impulses from the AV node to the ventricles of the heart.

Depolarizes

The process by which the electrical charge of a cell's membrane is reduced, leading to the possibility of generating an action potential.

Left Atrial Pressure

The pressure within the left atrium of the heart, important in evaluating heart function, particularly in conditions affecting left ventricular filling.