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  1. What is the definition of unit vector? - Physics Stack Exchange

    Apr 3, 2021 · 2 In many physics textbooks it is given the following definition of unit vector: "A unit vector is every vector whose magnitude is 1 unit". I don't like this definition. On one hand, it is quite …

  2. Confusion about unit vectors - Physics Stack Exchange

    Aug 2, 2025 · By definition, A unit vector is a vector with magnitude $1$. But, what does this even mean? Shouldn't the magnitude come with units like cm, m, inches etc.? Upon reading more about …

  3. Unit Vector vs. Basis Vector - Physics Stack Exchange

    Jun 23, 2016 · Rather you need to talk about a particular basis, which is a set of vectors with nice properties (LI, span the space) of which the vector of interest is one, and this is what people mean …

  4. Polar coordinates unit vector conversion confusion

    Sep 24, 2017 · The unit vector r^ r ^ can be rotated with the locus of the head of the vector shown as a dashed black line which is an arc of a circle of radius one. As you want θ^ θ ^ shown in red to be at …

  5. Derivatives of Unit Vectors in Spherical and Cartesian Coordinates

    Nov 4, 2016 · Except for this parenthetical remark, this makes sense to me, as the unit vectors in curvilinear coordinates are functions of the coordinates, and their derivatives with respect to the …

  6. How do the unit vectors in spherical coordinates combine to result in a ...

    Feb 5, 2020 · I might be missing the obvious, but I can't figure out how the unit vectors in spherical coordinates combine to result in a generic vector. In cartesian coordinates, we would have for …

  7. Why do we need a unit vector? - Physics Stack Exchange

    Jan 31, 2023 · I am taking a course in dynamic mechanics. It includes a lot of vectors. A vector by definition has a direction and a magnitude. But I don't get it on why we have to find a unit of it to find the

  8. Relation of unit vectors of spherical and cartesian coordinates

    Jun 7, 2018 · Relation of unit vectors of spherical and cartesian coordinates Ask Question Asked 7 years, 8 months ago Modified 7 years, 8 months ago

  9. Where does the expression of the unit vector $\hat {z}$ in terms of ...

    Nov 11, 2023 · Where does the expression of the unit vector $\hat {z}$ in terms of unit vectors in spherical coordinates comes from? [duplicate] Ask Question Asked 2 years, 2 months ago Modified 2 …

  10. Find the Unit Vector of a Three Dimensional Vector

    I know that with a two-dimension unit vector that you can split it up into components, treat it as a right-triangle, and find the hypotenuse. Following that idea, I tried something like this, where I found the …