ToQ4. A thick steel slab (p-7800 kg/m', C-480 J/kg. k, k-50 W/m. k, a 10-5 m2 /s ) is initially at 300 C and is cooledby water jets impinging one of its surfaces. The temperature of the water is 25 C, and the jets maintain an extremelylarge, approximatefy uniform convection coefficient of 3500 W/m2C at the surface. Assuming that the surface ismaintained at the temperature of the water throughout the cooling, how long will it take for the temperature to reach50 C at a distance of 25 mm from the surface?

Answered: Image /qna-images/answer/ce05a9e9-147a-4ea3-b9d1-dd20ca566333.jpg

Q4. A thick steel slab (p=7800 kg/m', C-480 J/kg. k, k-50 W/m. k, a 10-5 m2 by water jets impinging one of its surfaces. The temperature of the water is 25 large, approximately uniform convection coefficient of 3500 W/m2C at the s maintained at the temperature of the water throughout the cooling, how long wi 50 C at a distance of 25 mm from the surface?

Q4. A thick steel slab (p=7800 kg/m', C-480 J/kg. k, k-50 W/m. k, a 10-5 m2 by water jets impinging one of its surfaces. The temperature of the water is 25 large, approximately uniform convection coefficient of 3500 W/m2C at the s maintained at the temperature of the water throughout the cooling, how long wi 50 C at a distance of 25 mm from the surface?

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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