# Chapter 10-Fluids and Kinetic Theory.docx - 10.1 Density...

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Chapter 10Fluids and Kinetic Theory10.1DensityHomework # 75Density of SubstancesSubstanceSolidsAluminum Copper ConcreteIron and Steel GoldIce LeadPlatinum Silver Tin Uranium ZincI1.What is the approximate mass of air in a classroom that is 12.50 m x 4.00 m x 5.10 m?2.A wooden totem pole made of red cedar(SG = 0.380) has an approximate volume of 12.5 m3. What is itsapproximate mass?3.A penny made in the United States in 1938 has a mass of 3.10 g and a diameter of 1.90 cm. What is thethickness of the penny?II4.A bottle has a mass of 46.75 g when empty and a mass of 104.32 g when filled to the brim with water.Thewater is emptied and the bottle is filled with an unknown fluid giving the bottle a fluid-filled mass of 92.23 g.a.) What is the specific gravity (SG) of this fluid?b.) What might this fluid be?5.If 6.00 L of antifreeze (SG = 0.80) are added to 5.00 L of water, what is the SG of this 11.0-L mixture?III6.How much fresh water must be added to 12.5 L of sea water to produce a mixture with a SG of 1.018?ANSWERS:01.329 kg02.4750 kg03.1.23 mm04.a.) 0.790b.) ethyl alcohol05.0.8906.4.86 L (results anywhere from 4.22 L to 5.6 L depend on rounding techniques)
10.2Pressure and Pascal's PrincipleHomework # 76I1.The arm of a record player exerts a force on a record.This force is equivalent to a 1.00 g mass sitting directly onthe stylus.If the stylus has a diameter of 0.0013 cm, calculate the pressure on the record grove in.
2.A healthy value for diastolic blood pressure is 80.0 mm Hg.What would be the reading if measured in.
3.A physics teacher stands 1.88 m tall.What is the difference in blood pressure between the top of his head and thebottom of his feet when he is standing upright?4.A lab desk has dimensions of 1.629 m in length by 0.610 m in width with a mass of 38.6 kg.a.) What is the total force acting on the top of the table from the atmosphere on an average day?b.) Assuming the desk is not bolted to the floor, what is the total force need to lift this desk?c.) Why is the answer to b.) less than a.)?

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