Which of the following statements correctly describes the result of the cross product of two vectors?

Given vectors a = (1, 2, 3) and b = (4, 5, 6), set up the matrix used to compute a × b.

A wind turbine blade rotates in the xy-plane. The wind applies a force F = (0, 5, 0) N at the tip at position r = (3, 0, 0) m. What is the torque τ = r × F, and why is its direction important?