An incandescent light bulb with a surface area of 0.0137 m2 and an emissivity of 0.93 has a surface temperature of 178°C. What is the rate of thermal radiation emitted from the bulb [round your final answer to one decimal place]? {σ = 5.6704 x 10-8 W/(m2∙K4)}
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An incandescent light bulb with a surface area of 0.0137 m2 and an emissivity of 0.93 has a surface temperature of 178°C. What is the rate of thermal radiation emitted from the bulb [round your final answer to one decimal place]?
{σ = 5.6704 x 10-8 W/(m2∙K4)}
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- An incandescent light bulb with a surface area of 0.0121 m2 and an emissivity of 0.95 has a surface temperature of 181.9°C. If the temperature of the surroundings are 20.3°C, what is the net rate of radiation heat transfer between the bulb and the surroundings? [round your final answer to one decimal place]? {σ = 5.6704 x 10-8 W/(m2∙K4)}Presents the diagram of the problem, necessary formulas, clearance and numerical solution: The surface of the Sun has a temperature of about 5,800 K. The radius of the Sun is 6.96x108 m. Calculate the total energy radiated by the Sun each second. Assume the emissivity is 0.986.An unknown hot metal at 148.7°C with a mass of 49.6g was mixed with 28.61g of water at an initial temperature of 19.74°C. A final temperature (for both water and metal) of 27.71°C was reached. In units of J/(g°C), what is the specific heat of the unknown metal? Note: In the space below, please enter you numerical answer. Do not enter any units. If you enter units, your answer will be marked as incorrect.
- 23.0 g of copper pellets are removed from a 300 degree C oven and immediately dropped into 100 ml of water at 25 degree C in an insulated cup . what will the new water temperature be? express answer in degree CAn incandescent light bulb with a surface area of 0.0120 m2 and an emissivity of 0.9 has a surface temperature of 178°C. What is the rate of thermal radiation emitted from the bulb [round your final answer to one decimal place]? {o = 5.6704 x 10-8 W/(m²-K“)} 60 W T.13. Solve
- 9. The conduction heat flux through a wall is known to be 2020 W/m² and the convection heat flux from the outer surface of the wall is 1650 W/m². It is also known that the temperature on the outer surface and the surrounding are 373 K and 298 K respectively. Find the emissivity, &, of the outer surface of the wall. = 5.67 x 10-8 W/m²K4) (o= (Ans: ε = 0.569)14. The sun's temperature decreases steadily as the distance from its innermost regions increases. The sole exception to this is in the outermost part of the sun's atmosphere. This region, called the corona, consists of thin gases that are heated by the sun's magnetic field. As a result, the corona has an average temperature of about 1.0 x 10° K. What is this temperature in degrees Celsius? Must give answer then also | give answer in significant fig format