The class is about Electricity and Magnetism. The website wants exactly the perfect answer and in the same metric system units that are stated on the calculators that are on the picture for the question, if not, it'll mark it wrong.

How Hot is a Light Bulb Filament? A 100-W incandescent light bulb has resistance Re when off (cold,' at 20 * C) and resistance Re when on (hot). Estimate the temperature 7 of the filament when the bulb is on if the average temperature coefficient of resistivity is a. Express your answer in terms of the given quantities. 5 T = C ab sin(x x10 Submit Reset Reset All .See Section 25-4 for a discussion of the temperature dependence of resistivity. b. Evaluate your answer numerically using typical values: R. = 12.8 2, R = 141 2, and a = 0.0060 (C)-1. T = C abo sin(x JX10" Submit Reset Reset All