Answer all questions if you know and get 20 points if you don't know please don't write unpropriate answers like (ducgvhch) otherwise ill report the answer​

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

What is the equation for electrical work?

Use the profile illustrated for problem (1). assume that the layer of silty sand fill (sm) is placed over the entire site. estimate the thickness of the fill (h - in feet) that will cause the effective vertical stress at the center of the clay layer to increase by 517.5 pounds per square foot.