MasteringPhysics-ch 16

# MasteringPhysics-ch 16 - MasteringPhysics Assignment Print...

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MasteringPhysics: Assignment Print View http://session.masteringphysics.com/myct/assignmentPrint?assignm. .. 1 of 13 11/26/07 10:27 PM [ Print View ] physics 2211 MP18: Chapter 16 Due at 5:30pm on Monday, December 10, 2007 View Grading Details Interconversion of Temperature Scales Celsius The world's most common temperature scale is Celsius. Abbreviated C, it is virtually the same as the old centigrade scale and therefore has 100 degrees between the melting point and boiling point of water, taken to occur at 0 and 100 degrees, respectively. Kelvin Temperature is a measure of the thermal energy of a system. Thus cooling can proceed only to the point at which all of the thermal energy is removed from the system, and this process defines the temperature of absolute zero . The Kelvin scale, also called the absolute temerature scale, takes its zero to be absolute zero. It uses units of kelvins (abbreviated K), which are the same size as the degrees on the Celsius scale. Fahrenheit This anachronistic temperature scale, used primarily in the United States, has zero defined as the lowest temperature that can be reached with ice and salt, and 100 degrees as the hottest daytime temperature observed in Italy by Torricelli. Part A In the equation of state for the perfect gas, , which of the following three temperature scales must be used? ANSWER: Celsius Kelvin Fahrenheit In physical equations, you are free to use any units for the physical quantities that you wish, provided that you use the same units consistently throughout that equation. However, systems of units do not shift the zero: Zero feet is the same length as zero meters. This is not true for shifted temperature scales like Farenheit and Celsius--their zeros are arbitrarily displaced from absolute zero (and do not even agree with each other). You must use a temperature scale whose zero is at absolute zero in physical formulas involving the temperature. Part B What is the formula used to convert a temperature in degrees Celsius ( ) to the same temperature in kelvins ( )? Express in terms of . [ Print ]

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MasteringPhysics: Assignment Print View http://session.masteringphysics.com/myct/assignmentPrint?assignm. .. 2 of 13 11/26/07 10:27 PM ANSWER: = Part C What is the formula used to convert a temperature in degrees Fahrenheit ( ) to the same temperature in degrees Celsius ( )? Express in terms of . ANSWER: = Part D It is possible to get a good "feel" for the Celsius scale because multiples of 10 have special significance: : very cold weather; : water freezes; : a cool day, so wear a jacket outside; : room temperature; : a hot day, so drink extra water; : a high fever. Convert these six temperatures into Fahrenheit. Part D.1 Convert from Celsius to Fahrenheit
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MasteringPhysics-ch 16 - MasteringPhysics Assignment Print...

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