The vector A has x, y, and z components of 8, 12, and 24 units, respectively. a) Write a vector expression for A in unit-vector notation. b) Obtain a unit-vector expression for a vector B one-fourth the length of A pointing in the same direction as A. c) Obtain a unit-vector expression for a vector C three times the length of A pointing in the direction opposite the direction of A.

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