A Bat Is Flying Toward a Cave Wall

question 43

Multiple Choice

A bat is flying toward a cave wall. If it hears reflected sound of frequency 60.9 kHz, what is its flying speed, assuming it emits sound at 52.0 kHz? The speed of sound is 341.5 m/s.

• A) 25.9 m/s
• B) 28.1 m/s
• C) 49.9 m/s
• D) 26.9 m/s
• E) 58.4 m/s

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Definitions:

Thumb Points

Typically refers to a method used in electromagnetic right-hand or left-hand rule demonstrations, where the thumb's direction represents the direction of current or force.

Induced Voltage

Voltage that is produced in a conductor by magnetic lines of flux cutting the conductor.

Electromagnetic Induction

The production of voltage across a conductor situated in a changing magnetic field or a conductor moving through a stationary magnetic field.

Magnetic Flux

The measurement of the total magnetic field passing through a given area, represented symbolically as Φ, and providing insight into the strength and direction of magnetic fields.