Questions concerning Heat Transfer

Question (1):	By changing the velocity of a flue gas flow. How high will be the alteration of the heat transfer by radiation?
Options:	0 % 10 % 50 % don't know

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Question (2):	The change of which of the following properties will cause a change of heat transfer by conduction?
	Distance to the source Temperature of the source Thickness of the body (material) Colour of the surface

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