VectorAddition
日期：2011-09-20 09:21:00
来源：作文地带
好评：优秀英语作文
作文地带导读：First, add the two parallel vectors, A and B. Because they are parallel, this is a simple matter of straightforward addition: 9 + 3 = 12. So the vector A + B has a magnitude of 12 and points due north. Next, add A + B to C. Th...
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VectorComponents
日期：2011-09-20 09:21:00
来源：作文地带
好评：优秀英语作文
作文地带导读：To solve this problem, we need to resolve the force on the second rope into its northward and westward components. Because the force is directed 30o west of north, its northward component is and its westward component is...
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