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How much heat energy is required to raise the temperature of 5 kilograms of coal from 20°C to 220°C? A. 314 J B. 6,573 J C. 1,314,718 J D. 4,187,000 J
1,314,718 J is required to raise the temperature of 5 kilograms of coal from 20°C to 220°C.
Expert answered|jeifunk|Points 9661|
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Asked 5/10/2013 10:56:07 AM
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If a 72-candela light source is located at a distance of 3 meters from a surface, the illuminance on the surface is A. 8 lux. B. 24 lux. C. 216 lux. D. 648 lux
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