This morning on the way to school when you picked up your iced latte your barista added 600g of coffee to 100g of ice. When you got to school the ice had all melted. To prove you didn't get swindled you massed your drink when you got to school and found it was 700g. Represent this situation accounting for conservation of matter. Explain your reasoning.

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.