The operating temperature of a tungsten filament in an incandescent light bulb is 2450 K, and its emissivity is 0.350. Find the surface area of the filament of a 150 W bulb if all the electrical energy consumed by the bulb is radiated by the filament as electromagnetic waves. (Only a fraction of the radiation ap- pears as visible light.)
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In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final
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Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?
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Suppose a comet has an orbital period of 309.1 years around the sun. what is itβs average distance from the sun?
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The operating temperature of a tungsten filament in an incandescent light bulb is 2450 K, and its em...
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