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International Baccalaureate: Physics

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  1. 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.

    • Word count: 739
  2. 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

    • Word count: 1213
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"The boldness of asking deep questions may require unforeseen flexibility if we are to accept the answers."

-Brian Greene

If you want to learn about the physical laws that govern the behaviour of everything in the universe, then chances are you'd enjoy studying physics as part of your IB diploma. Physics is one of six subjects on offer in group 4, and gives students a grounding in the scientific method, lab work, and range of theoretical concepts. The theory portion begins with building blocks like mechanics, electric currents, and waves, and builds up to advanced topics like astrophysics and particle physics.

Physics will require a fair amount of writing, often in the form of lab reports. If you need to refine your writing skills, come visit our collection of student-submitted IB physics papers. Study the teacher-marked and peer-reviewed papers alongside your own work, and before long, you'll know how to edit and re-write assignments to your teachers' high standards.

Students who get good marks in physics, and especially in high level physics, will leave school well positioned to apply for a range of university course within the physical and biological sciences.

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