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Science

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1. In which medium will sound travel the slowest?
a. air (20°C)
b. mercury (20°C)
c. hydrogen (20°C)
d. helium (20°C)
2. In which medium will sound travel the slowest?
a. steel
b. pyrex glass
c. brass
d. polystyrene

Sagot :

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Explanation:

1.D

2.B

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