It takes a car 1.75 hours to go from mile marker 10 to mile marker 115.

what is the average speed of the car?

a: 1.6 miles per hour
b: 60 miles per hour
c: 65 miles per hour
d: 183 miles per hour

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.