A 13g bullet traveling 223ms penetrates a 2kg block of wood, Ask an Expert

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Q. A 13g bullet traveling 223m/s penetrates a 2kg block of wood and emerges cleanly at 160 m/s. If the block is stationary on the frictionless surface when hit, how fast (m/s) does it move after the bullet emerges?

Q. Two speakers, one straight behind the other, are each generating a 210 Hz sound wave. What is the smallest separation distance between speakers that will produce destructive interference at the listener standing in front of them? The speed of sound is 348m/s.

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Category:- Physics
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