Which statement about magnets and magnetic fields is correct? A. Magnetic fields apply a force on any object with a mass.

B. Magnetic fields apply a force on any metal.

C. Magnetic fields apply a force on magnets.

D. Magnetic fields apply a force on electrically conductive metals.

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.