What is the average velocity of the time interval 0 to 4 seconds

For which pair of objects would adding the same a

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.

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.