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Q1. A robot probe drops a camera off the rim of a 255 m high cliff on mars, where the free fall acceleration is 3.8 ms^2. What is the velocity of which it hits ground?

Q2. Two speakers, one directly behind the other, are each generating a 429-Hz sound wave. What is the smallest separation distance between the speakers that will produce destructive interference at a listener standing in front of them? Take the speed of sound to be 343 m/s.

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