A steel ball [e0.46 kJ/kg. °C, k 35 W/m-°C] 5.0 cm in diameter and initially at a uniform temperature of 450°C is suddenly placed in a controlled environment in which the temperature is maintained at 100°C. The convection heat-transfer coefficient is 10 W/m °C. Calculate the time required for the ball to attain a temperature of 150°C.
A steel ball [e0.46 kJ/kg. °C, k 35 W/m-°C] 5.0 cm in diameter and initially at a uniform temperature of 450°C is suddenly placed in a controlled environment in which the temperature is maintained at 100°C. The convection heat-transfer coefficient is 10 W/m °C. Calculate the time required for the ball to attain a temperature of 150°C.
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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![A steel ball [e 0.46 kJ/kg. °C, k 35 W/m-°C] 5.0 cm in diameter and initially at a uniform
temperature of 450°C is suddenly placed in a controlled environment in which the temperature
is maintained at 100°C. The convection heat-transfer coefficient is 10 W/m °C. Calculate the
time required for the ball to attain a temperature of 150°C.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6551cd2c-f116-4377-91a1-87b5ab6f3d7b%2F678f0303-b488-47a0-8821-5313f90140e5%2F2yoar0b_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A steel ball [e 0.46 kJ/kg. °C, k 35 W/m-°C] 5.0 cm in diameter and initially at a uniform
temperature of 450°C is suddenly placed in a controlled environment in which the temperature
is maintained at 100°C. The convection heat-transfer coefficient is 10 W/m °C. Calculate the
time required for the ball to attain a temperature of 150°C.
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