An iceskater is turning at a period of (1/3) second with his arms outstretched. a) what is his angular velocity w? b) if he pulls his arms towards his body to reduce his moment of intertia by 1/2, what is his angular velocity w? c) how much does his rotational kinetic energy change? that is, if the initial kinetic energy is (ke)initial, what is the final ke? d) where did that energy come from, or go to?
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Physics, 22.06.2019 01:40, janeou17xn
Crowbar of 5 metre is used to lift an object of 800 metre if the effort arm is 200cm calculate the force applied
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Physics, 22.06.2019 04:00, dlatricewilcoxp0tsdw
Drag each item into the proper state of matter category.
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Physics, 22.06.2019 05:10, zionnahl
Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.
Answers: 3
An iceskater is turning at a period of (1/3) second with his arms outstretched. a) what is his angul...
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