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Question1

A cylindrical 3.52 kg pulley with a radius of 0.360 m is used to lower a 4.45 kg bucket into a well. The bucket starts from rest and falls for 3.29 s. What is linear acceleration of the falling bucket? The acceleration of gravity is 9.81 m/s 2. Answer in units of m/s 2

Question2

A simple random sample of 1,000 members of American Psychological Association to whom you will send a questionnaire about their views concerning the appropriate preparation of clinical psychologists. List steps you take in selecting your sample.

Question3

A spring with spring constant 20.0 hangs from the ceiling. A 570 ball is attached to the spring and allowed to come to rest. It is then pulled down 7.20 and released.

What is time constant if the ball's amplitude has decreased to 2.30 after 49.0 oscillations?

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Category:- Physics
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