A metal ball with 0.15 m diameter contains heat source that dissipate 75 W. If the ball has an emissivity of 0.60 and does not receive any radiation from other sources what is surface temperature (in °C)? (ignore natural convection)

A metal ball with 0.15 m diameter contains heat source that dissipate 75 W. If the ball has an emissivity of 0.60 and does not receive any radiation from other sources what is surface temperature (in °C)? (ignore natural convection)

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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Question

Solve it correctly.

A metal ball with 0.15 m diameter contains heat source that dissipate 75 W. If the ball surface
has an emissivity of 0.60 and does not receive any radiation from other sources what is its
surface temperature (in °C)? (ignore natural convection)
Select one:
O 91.15
O 102.78
O 112.05
O 147.09
O Not listed
O 124.29
O 134.17

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