What is the physical interpretation of the dot product A⃗⋅B⃗\vec{A} \cdot \vec{B}A⋅B?
It measures how much two vectors align.
It produces a vector orthogonal to both.
It represents the volume of a parallelepiped.
It is always equal to ∣A⃗∣+∣B⃗∣|\vec{A}| + |\vec{B}|∣A∣+∣B∣.