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The boy of mass 30 kg is at r1= 2 meters from the fulcrum. of the girl is 45 kg, at what r2 must she sit so that they are balanced ?
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Blank liquids and gases exert a buoyant force on objects placed in them
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What sort of waves exhibit the doppler effect?
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Ethanol has a heat of vaporization of 38.56 kj/mol and a normal boiling point of 78.4 c. what is the vapor pressure of ethanol at 14 c?
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Calculate the average volume per molecule for an ideal gas at room temperature and atmospheric press...
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