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Physics, 22.06.2019 09:50, blaqsafire9291
If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?
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Physics, 22.06.2019 13:40, youngbeauty17
Awind turbine is rotating counterclockwise at 0.5 rev/s and slows to a stop in 10 s. its blades are 20 m in length. (a) what is the angular acceleration of the turbine? (b) what is the centripetal acceleration of the tip of the blades at t=0s? (c) what is the magnitude and direction of the total linear acceleration of the tip of the blades at t=0s?
Answers: 1
Physics, 23.06.2019 00:10, 2002boo13
Consider a small frictionless puck perched at the top of a fixed sphere of radius r. if the puck is given a tiny nudge so that it begins to slide down, through what vertical height will it descend before it leaves the surface of the sphere? [hint: use conservation of energy to find the puck's speed as a func e conservation of energy to find the puck's speed as a function of its height at what value of this normal force does the puck leave the sphere? ] here on the puck.
Answers: 2
How will unbalanced forces affect the speed and direction of an object...
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