By Alan Giambattista, Betty Richardson, Robert Richardson
Whereas physics can look tough, its real caliber is the sheer simplicity of basic actual theories--theories and ideas which can increase your view of the area round you. university PHYSICS, 9th version, offers a transparent technique for connecting these theories to a constant problem-solving technique, conscientiously reinforcing this system in the course of the textual content and connecting it to real-world examples. for college students making plans to take the MCAT examination, the textual content comprises specific try prep and evaluation instruments that will help you arrange.
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Extra resources for College Physics, Volume 1 (9th Edition)
Sample text
5 m), all of which round to 9 when only one digit is retained. QUEST ION 1. 0 m? E XERCISE 1. 3 A ranch has two fenced rectangular areas. Area A has a length of 750 m and width 125 m, and area B has length 400 m and width 150 m. Find (a) area A, (b) area B, and (c) the total area, with attention to the rules of significant figures. Assume trailing zeros are not significant. 5 3 105 m2 In performing any calculation, especially one involving a number of steps, there will always be slight discrepancies introduced by both the rounding process and the algebraic order in which steps are carried out.
Put circles around the unknowns. There must be as many equations as there are unknowns. 5. Equations, the relationships between the labeled physical quantities, should be written down next. Naturally, the selected equations should be consistent with the physical principles identified in the previous step. 4. Identify principle(s); list data 5. Choose Equation(s) Solution 6. Solve the set of equations for the unknown quantities in terms of the known. Do this algebraically, without substituting values until the next step, except where terms are zero.
The first, concerning multiplication and division, is as follows: In multiplying (dividing) two or more quantities, the number of significant figures in the final product (quotient) is the same as the number of significant figures in the least accurate of the factors being combined, where least accurate means having the lowest number of significant figures. To get the final number of significant figures, it’s usually necessary to do some rounding. If the last digit dropped is less than 5, simply drop the digit.