A spherical asteroid with a radius of 0.92 km is floating in deep space . It has an emissivity of 0.70 and a temperature of -178 ° C. Estimate the rate at which it loses energy due to radiation .
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A spherical asteroid with a radius of 0.92 km is floating in deep space . It has an emissivity of 0.70 and a temperature of -178 ° C. Estimate the rate at which it loses energy due to radiation .
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- A steel beam being used in the construction of a skyscraper has a length of 30.000 m when delivered on a cold day at a temperature of 13.000°F. What is the length of the beam when it is being installed later on a warm day when the temperature is 87.000°F? (Give your answer to at least five significant figures.)The number density of gas atoms at a certain location in the space above our planet is about 0.75 × 1011 m-3, and the pressure is 2.65 × 10-10 Pa in this region. What is the temperature in this region, in degrees Celsius?A) Estimate the total solar heating absorbed by the Earth every second. Assume 36% of the incoming solar radiation is reflected by clouds and lost. You can assume that the Earth intercepts sunlight with an effective area of πr2 where r is Earth’s radius. B) Estimate the total heat lost by the Earth as infrared radiation every second. Assume Earth has an effective temperature of 252 K (-21 C).