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        "name": "9_2 Cartesian Components of Vectors",
        "intro": "<p>It is useful to be able to describe vectors with reference to specific coordinate systems, such as the Cartesian coordinate system. So, in this quiz, we show how this is possible by defining unit vectors in the directions of the \\(x\\) and \\(y\\) axes. Any other vector in the \\(xy\\) plane can then be represented as a combination of these <span><strong>basis vectors<\/strong><\/span>. The idea is then extended to three dimensional vectors. This is useful because most engineering problems involve 3D situations.<\/p>",
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