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

Children sometimes play with a homemade €œtelephone€ 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. 12-29). Explain clearly how the sound wave travels from one cup to the other.

Children sometimes play with a homemade “telephone” by attaching

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