Solving a problem in physics section 13 paragraph 76 el
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- The diameter of the tungsten filament in the light bulb d = 0,3 mm, l = length of the spiral 5 cm. When the lights in the network voltage U = 127 V current flows through the bulb I = 0,31 A. Find the temperature T coil. Believes that a balance all the earmarks in the yarn heat is lost by radiation. The ratio of tungsten and irradiance of a blackbody at a given temperature k = 0,31.
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Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)