WVC PHYS222 Winter 2019 Lab 8.docx - Specific Heat Max Stevens Luke Corbin ABSTRACT The purpose of this lab is to experiment with and learn more about

WVC PHYS222 Winter 2019 Lab 8.docx - Specific Heat Max...

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Specific Heat Max Stevens Luke Corbin 2/27/2019 ABSTRACT: The purpose of this lab is to experiment with and learn more about specific heat. INTRODUCTION: Specific heat, is a constant that represents how much heat energy an object can store. Specific heat is expressed as a constant that expresses how much heat energy an object can store per unit of mass per unit of temperature change. The units for specific heat are commonly calories per gram celsius, joules per kilogram kelvin, and variations on these, some involving the molar mass of the object. The specific heat of an object can be found by adding or taking away heat energy from the object and measuring its change in temperature. THEORY: Variables: Q = heat m = mass c = specific heat ΔT = change in temperature In order to determine heat of an object, “Q” is found. This is done by multiplying the mass by an object's resistance to change in heat (specific heat). Then multiplying this new number by the change in temperature will find heat. Q = mc ΔT (20.4)
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If two materials are added together, the heat of the cold object will become equal to the negative heat of the hot object. Essentially this means that temperatures will equalise when exposed to each other and the heat of a hot object plus the heat of the cold object will net 0 heat energy. Q cold =− Q hot (20.5) Combining the previous 2 equation yields a way to solve for any unknown in a heat equalisation problem. Multiple materials could be added to ether side. For example in this experiment, the cold side of this equation has Q for water and Q for aluminium. While on the hot side, the metal shot is added. m 1 c 1 ( T f T 1 )=−[ m 2 c 2 ( T f T 2 )] combined EXPERIMENT: First a cup was filled two thirds full with metal shot, then the mass of the metal shot was weighed and the type of metal was recorded. A boiler was filled about halfway with water and
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