18. Waves & Sound
Velocity of Longitudinal Waves
Multiple Choice
Multiple ChoiceA metal bar has a length of 1.5 m and a density of 6400 kg/m3. Sound waves take 3.9 × 10-4 s to travel along the length of the bar. What is Young's modulus for this metal?
A
2,311 Pa
B
9.47 × 1010 Pa
C
2.46 × 107 Pa
D
3.744 Pa
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