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b
Sound waves can travel great distances.
Mac and Suzanne cut holes in the bottom of two cups and connect them with a string. When Mac whispers into one cup, Suzanne can hear him through the other. What is the best reason to explain why this happens?
a
Sound waves produce an echo.
b
Sound waves can travel great distances.
c
Sound waves travel better through solids than gases.
d
Sound waves from whispering have a higher frequency.
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answered3 months ago