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When an object falls through air, there is a drag force (with dimension M· L/T ^{2}) that depends on the product of the surface area of the object and the square of its velocity; i.e., F_{air} = C Av^{2}, where C is a constant. What is the dimension for constant C?

1. [C] = M/T

2. [C] = M/L^{3}

3. [C] = M/L^{2}

4. [C] = T•L/M

5. [C] = T^{2}•L^{2}/M

6. [C] = T•L^{2}/M

7. [C] = T^{2}•L/M

8. [C] = T/M

9. [C] = M/T•L^{2}

10. [C] = M/T^{2}•L^{2}

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