Itemized Textbook Solutions

Expansion of Binomials| Algebra| ENGG10 LE1 Problem 8

Expansion of Binomials| Algebra| ENGG10 LE1 Problem 8

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Simplifying Expressions with Integral Exponents| Algebra| ENGG10 LE1 Problem 1

Simplify the given expression. Write the answer with positive exponents. $latex \left(\frac{3^2}{a^3}\right)^{-2}\cdot \left(\frac{a^4}{2^2}\right)^2&s=2&bg=ffffff&fg=000000$ SOLUTION: $latex \left(\frac{3^2}{a^3}\right)^{-2}\cdot \:\left(\frac{a^4}{2^2}\right)^2=\frac{\left(3^2\right)^{-2}}{\left(a^3\right)^{-2}}\cdot \frac{\left(a^4\right)^2}{\left(2^2\right)^2}&s=1&bg=ffffff&fg=000000$ $latex =\frac{3^{-4}}{a^{-6}}\cdot \frac{a^8}{2^4}&s=1&bg=ffffff&fg=000000$ $latex =\frac{\frac{1}{3^4}}{\frac{1}{a^6}}\cdot \frac{a^8}{2^4}&s=1&bg=ffffff&fg=000000$ $latex =\frac{a^6}{3^4}\cdot \frac{a^8}{2^4}&s=1&bg=ffffff&fg=000000$ $latex =\frac{a^6}{81}\cdot \frac{a^8}{16}&s=1&bg=ffffff&fg=000000$ $latex =\frac{a^{6+8}}{1296}&s=1&bg=ffffff&fg=000000$ $latex =\frac{a^{14}}{1296}&s=1&bg=ffffff&fg=000000$

Flying in a Straight Line with Rotated Axes| Vector Addition and Subtraction| Analytical Method| College Physics| Problem 3.21

You fly 32.0 km in a straight line in still air in the direction 35.0° south of west. (a) Find the distances you would have to fly straight south and then straight west to arrive at the same point. (This determination is equivalent to finding the components of the displacement along the south and west directions.) (b) Find the distances you would have to fly first in a direction 45.0º south of west and then in a direction 45.0° west of north. These are the components of the displacement along a different set of axes—one rotated 45.0°.