Ahorizontal circular turntable rotates about its center at the uniform rate of 10.9 revolutions per minutes. find the greatest distance (in meter) from the center at which a small block will remain stationary relative to the turn table. the coefficient of static friction between the turntable and the object is 0.8.
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When the magnetic domains in a material can be aligned, but eventually drift out of alignment, the material is
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Two positive charges are equal. which has more electric potential energy?
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Conventional hot-water heaters consist of a tank of water maintained at a fixed temperature. the hot water is to be used when needed. the drawback is that energy is wasted because the tank loses heat when it is not in use, and you can run out of hot water if you use too much. some utility companies are encouraging the use of on-demand water heaters (also known as flash heaters), which consist of heating units to heat the water as you use it. no water tank is involved, so no heat is wasted. a typical household shower flow rate is 2.50 gal/min (9.46 l/min ) with the tap water being heated from 51.0 Ëšf (10.6 Ëšc) to 120 Ëšf (48.9 Ëšc) by the on-demand heater.what rate of heat input (either electrical of from gas) is required to operate such a unit, assuming that all the heat goes into the water?
Answers: 3
Ahorizontal circular turntable rotates about its center at the uniform rate of 10.9 revolutions per...
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