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Measure the specific heat capacity of ball bearings and state what material the ball bearings are made of.

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Introduction

Specific Heat Capacity of ball bearings Zaid Al-Radaideh Aim The aim of this experiment is to measure the Specific Heat Capacity of ball bearings and to state what material is the ball bearings made of. Hypothesis We can predict and assume that the Specific Heat Capacity of ball bearings is high such an assumption was made because it is known that metals have a high Specific Heat Capacity, because the balls are made from a metal we can assume that the Specific Heat Capacity is high. The color of the metal and the density of the metal balls bearing give the impression that it is made from copper. Apparatus 1. Ball bearings 2. Thermometer 3. Water 4. Beaker 5. Calorimeter 6. Bunsen burner 7. ...read more.

Middle

= 11�C Final temperature after the ball bearings were placed (Tf) = 15�C Conclusion Energy lost by the balls = Energy gained by water + energy gained by calorimeter MbCb ( Tf - Ti) = MwCw ( Tf - Ti ) + McCc ( Tf - Ti ) 0.1556 X Cb (16-82) = 0.20117 X 4200 (15-11) + 0.0978 X 900 (15-11) 0.1556 X Cb ( - 66 ) = 0.20117 X 4200 X (5) + 0.0978 X 900 X ( 5) -10.2696 Cb = 3379.656 + 352.08 Cb - 10.2696 = 3731.736 Cb = 3731.736 = 363.37 J kg-1 oC 10.2696 We can notice that the specific heat capacity of copper is 385 J kg-1 oC, and comparing this with the obtained result it is noticed that the difference between the theoretical and the obtained answer is only 16.77 J kg-1 oC. ...read more.

Conclusion

The experimenter should reset the platform balance and then measure, this will give a more accurate results. The thermometer was placed in the water without being stirred which means that the temperature is going to be different, because the experimenter holding the thermometer is going to increase the temperature, this will affect the results. The experimenter should stir the thermometer as to make sure that the temperature read on the thermometer is the room temperature, and place the thermometer in water, this will make the obtained results more accurate. Parallax error, the experimenter might look at the thermometer with an angle, in this case the temperature might be different this could affect the results. The experimenter should look at the thermometer at a right angle so as to minimize the error in reading the temperature from the thermometer. ...read more.

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