The magnitudes of the electric potential and of the electrostatic force depend on which factors?
A. Density and amount of charge
B. Mass and distance
O c. Distance and amount of charge
D. Mass and amount of charge

Find the magnetic field a distance r from the center of a long wire that has radius a and carries a uniform current per unit area j in the positive z direction.

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.

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction.true or false?