A Bat Emits a Sound at a Frequency of 39

question 26

Multiple Choice

A bat emits a sound at a frequency of 39.0 kHz as it approaches a wall.The bat detects beats with a frequency of 827 Hz between the sound it emits and the echo bouncing from the wall.What is the speed of the bat if the speed of sound in air is 343 m/s?

• A)2.7 m/s
• B)3.0 m/s
• C)3.6 m/s
• D)5.4 m/s
• E)9.0 m/s

Gain insight into nonfinancial performance measures and their uses.

Understand the principles of cost behavior and how it impacts managerial accounting.

Identify and define variable, fixed, and mixed costs.

Analyze how variable and fixed costs affect the financial operations of a business.

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Definitions:

Bacterial Spores

Bacterial spores are highly resistant, dormant structures formed by some bacteria to survive in adverse environmental conditions.

Surgical Asepsis

A set of sterilization practices and procedures used to eliminate all microorganisms in a surgical environment.

Sanitization

A reduction of the number of microorganisms on an object or a surface to a fairly safe level.

Bleach Solution

A diluted mixture of water and bleach used for disinfection and cleaning to kill bacteria, viruses, and fungi.