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acceleration action amount angle application attraction axis body called centimetre centre circle coefficient column component consider constant contained corresponding curve cylinder define density direction displacement distance divided division earth effect employed energy equal equation equilibrium exactly exerted expansion experiment expression fixed follows force forces acting friction gases given gives glass gravity greater heat Hence impact increase interval kinetic length less liquid magnitude mass matter means measured mercury molecules motion moving obtained opposite origin parallel particle passed pendulum period piston plane portion position pressure produced proportional quantity radius raised reference remains represent rest resultant rotation scale shown side solid speed sphere square straight line suppose surface surface tension taken temperature tube turn uniform unit vapour velocity vessel volume weight whole wire
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