Which best describes the current model of the atom? it is similar to the model of the solar system with orbiting planets. it has remained the same for several centuries. it is similar to the model of plum pudding with suspended plums. it may be revised with increasing scientific knowledge.?

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.