Standing Sound Waves: an Air Column, Open at One End

question 86

Multiple Choice

Standing sound waves: An air column, open at one end and closed at the other, is being designed so that its second lowest resonant frequency is 440 Hz. What should be the length of the column if the speed of sound in air is 340 m/s?

• A) 0.386 m
• B) 0.772 m
• C) 1.16 m
• D) 0.193 m
• E) 0.580 m

---

Definitions:

Baking Soda

A white crystalline compound (sodium bicarbonate) used in baking as a leavening agent due to its ability to release carbon dioxide when heated or mixed with acidic substances.

Muffin Mixture

A batter specifically prepared for making muffins, usually containing flour, eggs, a leavener, liquids like milk or water, and other flavoring agents.

Aqueous Solutions

Solutions in which water is the solvent, often involving substances dissolved in water to form a homogeneous mixture.

Solvent

A substance, usually a liquid, capable of dissolving other substances without chemical change in the solvent or solute, forming a solution.