Serway_PSE_quick_ch01

Serway_PSE_quick_ch01 - about its numerical value. To...

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Physics for Scientists and Engineers, 6e Chapter 1 – Physics and Measurement
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In a machine shop, two cams are produced, one of aluminum, one of iron. Both cams have the same mass. Which cam is larger? 1 2 3 33% 33% 33% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. the aluminum cam 2. the iron cam 3. Both cams have the same size.
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Because the density of aluminum is smaller than that of iron, a larger volume of aluminum is required for a given mass than iron.
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True or False: Dimensional analysis can give you the numerical value of constants of proportionality that may appear in an algebraic expression. 1 2 50% 50% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. True 2. False
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False. Dimensional analysis gives the units of the proportionality constant but provides no information
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Unformatted text preview: about its numerical value. To determine its numerical value requires either experimental data or geometrical reasoning. For example, in the generation of the equation x = at 2, because the factor is dimensionless, there is no way of determining it using dimensional analysis. The distance between two cities is 100 mi. The number of kilometers between the two cities is 1 2 3 33% 33% 33% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. smaller than 100 2. larger than 100 3. equal to 100 Because kilometers are shorter than miles, a larger number of kilometers is required for a given distance than miles....
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This note was uploaded on 01/19/2010 for the course PHYS 200 taught by Professor Davies during the Spring '08 term at Roger Williams.

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Serway_PSE_quick_ch01 - about its numerical value. To...

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