Task 50295.
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- Physics
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- 50295.PNG (8.57 KB)
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- 30.04.2016 16:43:31
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- Юрий Физик · about the seller and their products
DESCRIPTION
Task 50295.
Neglecting losses in the thermal conductivity, find the power of electric current needed for the filament 1 mm in diameter and 20 cm in length up to 2500 K. The temperature Assume that thread radiates as a black body and the establishment of thermal equilibrium in all liberated filaments heat is lost by radiation.
Additional information:
Detailed solution with a short recording conditions, laws and formulas used in the decision, the withdrawal of the calculation formula and the answer.
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