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Q1. One closed organ pipe has a length of 2.55 m.

a) What is frequency of the note played by this pipe?

b) When a second pipe is played at the same time, a 1.30 Hz beat note is heard. By how much is the second pipe too long?

Q2. A 2.00-kg object travelling east at 20.0 m/s collides with a 3.00-kg object travelling west at 10.0 m/s. After the collision, the 2.00-kg object has a velocity 5.00 m/s to the west. How much kinetic energy was lost throughout the collision?

Q3. Murry stands at the edge of a merry-go-round. The ride has a radius of 3 m, and rotates once every 3.5 s. What is the least coefficient of friction to keep Murry from sliding off the ride?

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Category:- Physics
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