Something that can not be used up or depleted

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.

Multiply or divide to make this english distance conversion. 174 inches = feet (14.5, 58, 2,088, 23)

A5 foot by 5 foot box culvert is buried 6 feet beneath the surface of the ground. a crosssection of this very long culvert (into and out of the page) is illustrated below. assume that the soil in which the culvert is buried has the following properties: jt = 120 pcf, w = 12%, ko = 0.50, ka = 0.33, and kp = 3.00. calculate the total horizontal force per unit length of culvert (fh) felt on one of the vertical faces of the culvert.