Answered: An object emits 30 Watts of power. If…

An object emits 30 Watts of power. If it were a perfect black body, other things are being equal, it would emit 90 Watts of radiant power. What is the emissivity of the object?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter1: Temperature And Heat

Section: Chapter Questions

Problem 122AP: (a) Deter-nine the power of radiation from the Sun by noting that the intensity of the radiation at...

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Concept explainers

Blackbody

Q.5 A blackbody radiates how much energy when the temperature of the body is elevated?

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An object emits 30 Watts of power. If it were a
perfect black body, other things are being equal,
it would emit 90 Watts of radiant power. What is
the emissivity of the object?

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