Physics, 29.08.2019 03:00 mathisaqeosmw
The light bulb in your room is not very bright. you want to use a concave mirror to direct its illumination into a tight, parallel beam of light for reading. the radius of curvature of the mirror is 30 centimeters. at what distance from the mirror should you place the light bulb to produce this parallel light beam
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Physics, 21.06.2019 17:20
When an object moves in uniform circular motion, the direction of its acceleration is a) in the same direction as its velocity vector. b) in the opposite direction of its velocity vector c) is directed toward the center of its circular path. d) is directed away from the center of its circular path. e) depends on the speed of the object.
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The difference between a red shift and a blue shift has to do with wavelength frequency. t or f
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Physics, 22.06.2019 10:30
Astone weighing 1.5 kilograms is resting on a rock at a height of 20 meters above the ground. the stone rolls down 10 meters and comes to rest on a patch of moss. the gravitational potential energy of the stone on the moss is joules.
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The light bulb in your room is not very bright. you want to use a concave mirror to direct its illum...
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