Declining estrogen levels can trigger severe pain in the lower lumbar region. The lower back pain due to estrogen deficiency can best be described as excruciating pain which radiates down the buttocks and legs. The incapacitating lower back pain may also hamper every day tasks.
A Position vector is a vector that describes position of a point in space. Often the position of such a point is nothing but the x,y, and z coordinates of the point with origin as the reference point. The direction of such a vector is the arrow or...
By Andrew Zimmerman Jones. Definition: A vector is a mathematical quantity that has both a magnitude and direction. It is often represented in variable form in boldface with an arrow above it.Many quantities in physics are vector quantities. A unit vector is a vector with a magnitude of 1 and is often denoted in boldface with a carat (^) above the variable.efinition: A vector is a mathematical quantity that has both a magnitude and direction. It is often represented in variable form in boldface with an arrow above it.