The southern united states experiences periodic occurrences of severe cold and drought conditions. which weather phenomenon most likely causes this and why? la niña, because the jet stream is displaced southwards la niña, because the jet stream is displaced northwards el niño, because of increased upwelling of cooler waters el niño, because of decreased upwelling of cooler waters

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.