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Children sometimes play with a homemade “telephone” by
Chapter 13, Problem 3Q(choose chapter or problem)
Children sometimes play with a homemade "telephone" by attaching a string to the bottoms of two paper cups. When the string is stretched and a child speaks into one cup, the sound can be heard at the other cup (Fig. . Explain clearly how the sound wave travels from one cup to the other.
Questions & Answers
QUESTION:
Children sometimes play with a homemade "telephone" by attaching a string to the bottoms of two paper cups. When the string is stretched and a child speaks into one cup, the sound can be heard at the other cup (Fig. . Explain clearly how the sound wave travels from one cup to the other.
ANSWER:
Step 1 of 2
The child speaking into a cup can create sound waves which may cause the bottom of the cup to vibrate. As the string is tightly attached to the bottom part of the cup, the vibrations of the cup are transmitted in terms of the longitudinal waves in the string.