A small spherical ball having diameter of d= 20 cm and at temperature of 150 °C is placed in a water bath maintained at 20 °C to be cooled down. Consider the proportionality constant to be a= 0.005/m²-s. a) Determine the time required for the temperature of the ball to reach 40 °C. b) At what time the temperature of the ball reach to 20 °C? c) What's the final temperature of the ball? Bulk environmental temperature=T, T(t) Initial solid temperature, T Surface area, A

A small spherical ball having diameter of d= 20 cm and at temperature of 150 °C is placed in a water bath maintained at 20 °C to be cooled down. Consider the proportionality constant to be a= 0.005/m²-s. a) Determine the time required for the temperature of the ball to reach 40 °C. b) At what time the temperature of the ball reach to 20 °C? c) What's the final temperature of the ball? Bulk environmental temperature=T, T(t) Initial solid temperature, T Surface area, A

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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