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Q1. One closed organ pipe has the length of 2.40 m.

A. What is the frequency of the note played by this pipe?

B. When the second pipe is played at the same time, a 120 Hz beat note is heard. By how much is the second pipe too long?

Q2. A 11.0g bullet is fired horizontally into a 103g wooden block that is firstly at rest on a frictionless horizontal surface and connected to a spring of constant 154N/m. The bullet becomes embedded in block. If the bullet-block system compresses the spring by the maximum of 72.0cm, what was the speed of the bullet at impact with block?

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Category:- Physics
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