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Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?
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In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will “stick” to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. part a what is the minimum rotational frequency, in rpm, for which the ride is safe? express your answer using two significant figures. f f = rpm
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Physics, 23.06.2019 03:50
Asimple electrochemical cell contains two electrodes? t or f
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Every chemical reaction demonstrate what important scientific principle...
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