Question:

Physics Helllpp!?

1.) Aluminum has a specific heat capacity more than twice that of copperPlace equal masses of aluminum and copper wire in a flame and the one to undergo the fastest increase in temperatureA.) copperB.) aluminumC.) both the same2.) Evaporation is a cooling process becauseA.) the more energetic molecules are able to escape the liquidB.) the temperature of the remaining liquid decreasesC.) of conduction and convectionD.) heat is radiated during the processE.) none of these3.) Metals are both good heat conductors and also good electrical conductors because or theA.) relatively high densities of metalsB.) high elasticity of metalsC.) ability of metals to transfer energy easilyD.) looseness of outer electrons in metal atomsE.) similarity between thermal and electrical conductive properties4.) At the temperature, which move w/ greater speed in the air?A.) very light moleculesB.) heavier moleculesC.) all will have equal average speeds

Answer:

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for the first question it is A becuase QAT (A mc) and when A (heat capacity) of aluminum is more, we should give more heat to aluminum to increase it`s temperature by 1for the second one it is D because the defenition of a cooling process is a process that radiats energy the third one is D because a good electrical conductor should have electrons that can transfer easilybut we cant exactly say that part C is incorrect because it`s some how correct toobut D is more felexible the last one is for sure A because when we give to things a same force the lighter one would travel fasterHope this would help

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