### What is the magnitude of the average acceleration

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Q1. A particular organ pipe can resonate at 213 Hz, 355 Hz, and 497 Hz, but not at any other frequencies in between. What is the fundamental frequency of pipe?

Q2. An airplane needs to reach a velocity of 446km/h to take off. On a 2000 m runway, what is the minimum acceleration necessary for the plane to take flight?

Q3. What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 5.28 m/s when going down a slope for 4.73 s.

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