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A 35.0-kg child swings in a swing supported by two chains, each 2.92 m long. The tension in each chain at the lowest point is 352 N.
(a) Find the child's speed at the lowest point.
_____ m/s
(b) Find the force exerted by the seat on the child at the lowest point. (Ignore the mass of the seat.)
_____N (upward)
A solar concentrating heat exchanger system directs sunlight onto a long,straight pipe. How long is the pipe for steady state, teady flow conditions
A reasonable estimate of the moment of inertia of an ice skater spinning with her arms at her sides can be made by modeling most of her body as a uniform cylinder. Estimate the skater's moment of inertia to two significant figures
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q1. a caterpillar climbs up a one-meter wall. for every 3 cm it climbs up it slides down 1 cm. it takes 10 minutes for
Two stationary positive point charges, charge 1 of magnitude 3.80 and charge 2 of magnitude 1.95 , are separated by a distance of 38.0 . An electron is released from rest at the point midway between the two charges.
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