A Boy on a Bicycle Approaches a Brick Wall as He

question 20

Multiple Choice

A boy on a bicycle approaches a brick wall as he sounds his horn at a frequency 400.00 Hz. The sound he hears reflected back from the wall is at a frequency 408.00 Hz. At what is the speed is the boy riding his bicycle toward the wall? Assume the speed of sound in air is 340 m/s.

• A) 3.68 m/s
• B) 333 m/s
• C) 6.67 m/s
• D) 6.80 m/s
• E) 3.37 m/s

---

Definitions:

Spillover Effect

The phenomenon where an occurrence in one context or part of life affects another context or part of life.

Physiological Arousal

Refers to the physical responses of the body, such as increases in heart rate or hormone levels, triggered by emotions, exercise, or stimuli that indicate the body's level of alertness and readiness to respond.

Epinephrine

A hormone and neurotransmitter also known as adrenaline, important for the body's fight-or-flight response.

Perspiration Levels

The amount or volume of sweat produced by the body, which can vary due to physical activity, emotional state, or environmental conditions.