A solid cylinder of radius r1 = 2.1 cm, length h1 = 5.0 cm, emissivity 0.85, and temperature 36°C is suspended in an environment of temperature 57°C. (a) What is the cylinder's net thermal radiation transfer rate P1? (b) If the cylinder is stretched until its radius is r2 = 0.49 cm, its net thermal radiation transfer rate becomes P2. What is the ratio P2/P1? (a) Number i Units (b) Number i Units

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Chapter1: Units, Trigonometry. And Vectors
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A solid cylinder of radius r1 = 2.1 cm, length h1 = 5.0 cm, emissivity 0.85, and temperature 36°C is suspended in an environment of
temperature 57°C. (a) What is the cylinder's net thermal radiation transfer rate P1? (b) If the cylinder is stretched until its radius is r2 =
0.49 cm, its net thermal radiation transfer rate becomes P2. What is the ratio P2/P1?
(a) Number
i
Units
(b) Number
i
Units
Transcribed Image Text:A solid cylinder of radius r1 = 2.1 cm, length h1 = 5.0 cm, emissivity 0.85, and temperature 36°C is suspended in an environment of temperature 57°C. (a) What is the cylinder's net thermal radiation transfer rate P1? (b) If the cylinder is stretched until its radius is r2 = 0.49 cm, its net thermal radiation transfer rate becomes P2. What is the ratio P2/P1? (a) Number i Units (b) Number i Units
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