Which statements about heat flow are true?

AI Thread Summary
The discussion revolves around identifying the false statement regarding heat flow. Statements A, B, and C are confirmed as true, while there is uncertainty about D and E. Statement D is considered true, as a perfect blackbody indeed has an emissivity of one. However, statement E is questioned, with a participant unsure about its validity regarding the relationship between heat loss and temperature change. The conversation highlights the complexities of thermal conduction and radiation principles.
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Homework Statement


Which one of the following statements about heat flow is FALSE?
(A) Thermal conduction is due to energy exchange during collisions of atoms or molecules.
(B) Thermal convection occurs only in fluids.
(C) The rate of heat flow due to thermal radiation is proportional to the fourth power of the temperature in oC.
(D) A perfect emitter of thermal radiation has an emissivity of one.
(E) The rate of heat loss due to thermal conduction is proportional to the temperature change in oC

Homework Equations


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The Attempt at a Solution



I know A, B, and C are true. D & E I am not so sure.

D - I believe this is true - a perfect blackbody has an emissivity of one. A blackbody is an emitter of thermal radiation, correct?
E - Uhm..false?
 
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