The capacitance of an empty capacitor is 1.2x10 ^ -6 f. the capacitor is connected to a 12v battery and charged up. with the capacitor connected to the battery, a slab of dielectric material is inserted between the plates. as a result, 2.6 x 10^-5 c of additional charges flows from one plate, through the battery, onto the other plate. what is the dielectric constant of the material?

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.