Physics, 22.08.2019 23:30 Dragon63770
The emissivity of tungsten is 0.400. a tungsten sphere with a radius of 1.45 cm is suspended within a large evacuated enclosure whose walls are at 320 k. what power input is required to maintain the sphere at a temperature of 3000 k if heat conduction along the supports is negligible?
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Which statement correctly describes the current in a circuit that is made up of any two resistors connected in parallel with a battery? a. the current in the battery and in each resistor is the same b. the current the battery equals to the sum of the currents in the resistors c.the current in the battery is less than the current in either resistor d. the current in the battery equals to the product of the currents in the resistors
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The emissivity of tungsten is 0.400. a tungsten sphere with a radius of 1.45 cm is suspended within...
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