A copper sphere of surface area 300 sq cm and at a temperature of 427"C is plcec enclosure maintained at 27°C. At what rate is it losing heat if its emissivity is 0.6 ? o = 5.7 x 10 S. I. Units. J = 4200 J/kcal,
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![1. A copper sphere of surface area 300 sq cm and at a temperature of 427°C_is placed in an
enclosure maintained at 27°C. At what rate is it losing heat if its emissivity is 9.6 ?
o = 5.7 x 10 S. I. Units. J = 4200 J/kcal,](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6028c367-59a8-425f-99ae-8c64337e8134%2F628c0702-ef35-48ae-afce-8577aa10793e%2Frrhxfb_processed.jpeg&w=3840&q=75)
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