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International Baccalaureate: Physics
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- Marked by Teachers essays 2
Aim a) To verify that the pressure of a gas varies linearly with its temperature (expressed in degrees Celsius) when the volume of the gas is kept constant. b) To make an estimate in degree Celsius of absolute zero.
As more force on the area,the pressure increase. According to the Pressure law,for constant volume and mass of a gas,the pressure exerted on the side of the container is directly proportional to the absolute temperature(in Kelvin) of the gas.Thus, the temperature would reach absolute zero as pressure become zero. We can determine absolute zero by extrapolating the pressure vs. temperature graph to zero pressure. Variable Variable Method of measuring Independent Variable Temperature We determine the temperature of the gas by measuring the temperature of the water.
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Bifilar Suspension - the technique will be applied to find the mass moment of inertia of a regular cross-section steel beam about its centre of gravity.
Dependent variables: The time taken for 10 oscillations by the scale which was measured using a digital stop watch. Controlled variables: The controlled variables are as follows: * The mean position of the scale placed on the top: 50cm * The mean position of the scale placed below: 25cm * Number of strings used: 2 strings * Length of each string: 16.5cm. * Distance between the two ends of the scale placed above: 90cm DIAGRAM: APPARATUS: S.no Material Type Range Quantity Least count Uncertainity 1 Ruler - 1 cm – 100 cm 1 0.1cm ± 0.05 cm 2 Thread - - - - - 3 Clamp stand - - 2 - - 4 Stop watch Digital - 1 0.01
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