Three different square blocks materials of equal volume, namely aluminum, iron and lead with densities 2700 kg/m3, 7800 kg/m3, and 11300 kg/m3 , respectively are completely submerged into water. Which of the following is the correct statement about the buoyant force on each square block?

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c