# physics syllabus

Jun 17th, 2015
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General: Units and dimensions, dimensional analysis; least count, significant figures; Methods of measurement and error analysis for physical quantities pertaining to the following experiments: Experiments based on using Vernier calipers and screw gauge (micrometer), Determination of g using simple pendulum, Young.s modulus by Searle.s method,

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EXPERIMENT No.3SPECIFIC GRAVITY OF SOLIDS AND LIQUIDSI. OBJECTIVES1. Determine the specific gravity of solids.2. Determine the specific gravity of liquids.II. MATERIALSPycnometer, Mohr-Westphal Balance, Baume hydrometer, 500-ml graduated cylinder, leach pycnometer, test tubes, serological pipette, and rubber aspiratorIII. THEORYThe density of a material is defined as its mass per unit volume. A homogenous material such as ice or iron has the same density throughout. The SI unit of density is kilogram per cubic meter (kg/m3). The cgs unit, the gram per cubic centimeter (g/cm3) is also widely used.The Greek letter rho (p) is often used as the symbol for density. If the mass m, of a material has a volume, V, the density r is(1) P= mvAn object does not weigh less than it is when it is immersed in water. It only seems to weigh less because water is pushing the object upward. This force, which is exerted by any liquid on an object immersed within its confines, is called buoyant force. The apparent loss of weight an object experiences within a liquid is due to this buoyant force, as illustrated by(2) Buoyant force of a liquid = weight of the object in air - weight of the object in waterAn object immersed in a liquid displaces a volume of liquid equal to its volume. The weight of this displaced liquid may be obtained by determining first the mass using the equation for density and multiplying this

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