Suppose city 1 leaves an entire block (100 mm ×× 100 mm) as a park with trees and grass (emissivity 0.96) while city 2 paves the same area over with asphalt (emissivity 1.0). Sunlight heats each surface to 41.5 ∘C∘C by sunset, and then the surface radiates its heat into a cube of air 100 mm on a side and at 30.0 ∘C∘C. If each city block maintains the same radiated power for 2.1 hh and there are no other energy losses, what is the final temperature of the cube of air above the block in city 1? The density of air at 30.0 ∘C∘C is 1.16 kg/m3kg/m3. Express your answer to three significant figures and include appropriate units. If each city block maintains the same radiated power for 2.1 hh and there are no other energy losses, what is the final temperature of the cube of air above the block in city 2? The density of air at 30.0 ∘C∘C is 1.16 kg/m3kg/m3. Express your answer to three significant figures and include appropriate units.
Suppose city 1 leaves an entire block (100 mm ×× 100 mm) as a park with trees and grass (emissivity 0.96) while city 2 paves the same area over with asphalt (emissivity 1.0). Sunlight heats each surface to 41.5 ∘C∘C by sunset, and then the surface radiates its heat into a cube of air 100 mm on a side and at 30.0 ∘C∘C. If each city block maintains the same radiated power for 2.1 hh and there are no other energy losses, what is the final temperature of the cube of air above the block in city 1? The density of air at 30.0 ∘C∘C is 1.16 kg/m3kg/m3. Express your answer to three significant figures and include appropriate units. If each city block maintains the same radiated power for 2.1 hh and there are no other energy losses, what is the final temperature of the cube of air above the block in city 2? The density of air at 30.0 ∘C∘C is 1.16 kg/m3kg/m3. Express your answer to three significant figures and include appropriate units.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Suppose city 1 leaves an entire block (100 mm ×× 100 mm) as a park with trees and grass (emissivity 0.96) while city 2 paves the same area over with asphalt (emissivity 1.0). Sunlight heats each surface to 41.5 ∘C∘C by sunset, and then the surface radiates its heat into a cube of air 100 mm on a side and at 30.0 ∘C∘C.
If each city block maintains the same radiated power for 2.1 hh and there are no other energy losses, what is the final temperature of the cube of air above the block in city 1? The density of air at 30.0 ∘C∘C is 1.16 kg/m3kg/m3.
Express your answer to three significant figures and include appropriate units.
If each city block maintains the same radiated power for 2.1 hh and there are no other energy losses, what is the final temperature of the cube of air above the block in city 2? The density of air at 30.0 ∘C∘C is 1.16 kg/m3kg/m3.
Express your answer to three significant figures and include appropriate units.
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