!!gooo super mega awesome special lab gooo!!

!!gooo super mega awesome special lab gooo!! - Heat Lost...

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Introduction Heating is a result of energy transfer from object with higher temperature to an object with lower temperature. Two objects in contact that start at different temperatures will reach the same temperature – thermal equilibrium. If the two objects are enclosed in the environment that no heat is exchanged with surrounding, the amount of heat which flows from the hot object must equal the amount of heat which enters the cold object – the law of conservation of energy. As a result the thermal energy (heat) of the hotter object will decrease and that of the cooler object will increase. The metric unit for heat energy is Joule (J). Besides Joule, the unit of calorie “cal” is also used in metric system. A calorie is the amount of energy or heat, required to increase the temperature of one gram of water for one degree Celsius . The relationship between these two units is: 1 cal = 4.19 J or 1 J = 0.239 cal The amount of heat energy that is required to raise the temperature of one gram of a substance by one degree Celsius is called the specific heat capacity or Cp(Cp=j/kg×°C), or simply the specific heat of that substance, in other words every substances has a Cp for ex: Water 4186Cp Ice 2090Cp Steam 2010Cp Humans 3500Cp Specific heat being a way to quantify heat it can be used to solve for the heat energy value or Q using the equation Q=mCpΔT is valued in J Objectives To investigate and validate the equations for thermal equilibrium trough two different experiment, one being an experiment where two liquids of varied temperatures are mixed together to observe the temperature change; the second being an experiment involving a hot metal mass being submerged in a calorimeter
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Materials 2 Styrofoam Cups Calorimeter Balance Thermometer Metal Sample Paper Towels Tongs Stirring stick Procedure Part 1: Water 1. Measure and record the mass of each Styrofoam cup. If the masses are different mark them to distinguish from one another 2. Fill one cup about 1/3 full with hot water from the hot water pot. Measure and record the mass and temperature of this cup. Record your data. 3. Fill the other cup about 1/3 full with cold water. Measure and record the mass and temperature of this cup. Record your data. 4. Pour the cold water into the hot water. Use the thermometer to stir the mixture then
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This note was uploaded on 02/20/2011 for the course PHYSICS 2001 taught by Professor Dr.dinsemore during the Spring '09 term at Liberty.

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!!gooo super mega awesome special lab gooo!! - Heat Lost...

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