Specific Heat - SPECIFIC HEAT Maria Rodrigues Partner...

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SPECIFIC HEATMaria RodriguesFebruary 2, 2016PHY 153L-01Partner: Marquise Barnes
Specific HeatAbstract: This experiment will allow students to experiment the specific heat of three unknown metals and to identify what type of metal it is. Each metal has its own unique specific heat and thus allowing students to identify the metal used.Theory:Heat is a form of energy. It is expressed either in joules (J), calories (cal), of kilo-calories(kcal). The change in thermal energy of an object is proportional to the change in itstemperature. The heat capacity C of an object is defined as C =∆Q∆T, where Q is theamount of heat required to change the temperature of the object by T. The specific heatcof asubstance is the heat capacity per unit mass.The specific hear is measures in J/kgºC of cal/gºC of kcal/kgºC. Suppose we have two object, nehow and one cold. Let m1and m2be the masses of the hot and cold objects, T1and T2be thetemperatures of the hot and cold objects, and c1and c2be their specific heats respectively.These two objects are brought into thermal contact with each other and allowed to reach acommon final equilibrium temperature Tf. We are assuming the system to be thermallyinsulated from the surroundings. According to conservation of energy, the heat gained by thecould object would equal the heat lost by the hot object; Qgained= Qlost,m2c2(T1– Tf) = m1c1(T1– Tf)

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