Two Harmonic Waves Traveling in Opposite Directions Interfere to Produce

question 33

Multiple Choice

Two harmonic waves traveling in opposite directions interfere to produce a standing wave described by y = 2 sin (πx) cos (3πt) where x is in m and t is in s. What is the distance (in m) between the first two antinodes?

• A) 8
• B) 2
• C) 4
• D) 1
• E) 0.5

---

Definitions:

Skinner Box

An experimental apparatus designed by B.F. Skinner for studying behavioral conditioning in animals, typically involving a lever and a food dispenser.

Superstitious Behaviors

Actions that are performed based on the irrational belief that they will influence future events, despite the lack of a logical connection.

Pigeons

Birds of the family Columbidae, known for their distinctive cooing sound, and frequently studied in behavioral psychology for their learning capabilities.

Operant Conditioning

is a method of learning that uses rewards and punishments for behavior, which increases or decreases the likelihood of that behavior being repeated.