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Q1. A helicopter is ascending vertically with the speed of 5.79. At a height of 127 above the Earth, a package is dropped from a window. How long take the package to hit the ground?

Q2. What is the phase difference between sound waves reaching the listener's ear initially, before the upper speaker is moved?

Q3. Compute the time for the pencil to hit the ground, assume that it falls from standing perfectly vertical and maintains angular acceleration.

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Category:- Physics
Reference No.:- M9163676

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