B cells respond to the initial antigen by__________.

Functions of the lymphatic system include__________.

Which of the following is part of the second line of defense against microorganisms?

Interferons__________.

Which of the following are functions performed by the urinary system?

Bending moment M = 180 lb-ft is applied to a rectangular block that has dimensions a = 1.6 in., b = 3.6 in., and c = 3.6 in. Determine the magnitude of the largest bending stress in the block.

A 2,950-lb dinosaur stands on a simply-supported beam. Determine the maximum bending moment in the beam. Let a = 7.6 ft and b = 5.1 ft.

A 6.1-lb pterodactyl stands at a = 5.1 ft on a limb. Determine the maximum bending moment in the limb.

A 2,770-lb dinosaur stands on a simply-supported beam. Determine the maximum bending moment in the beam. Let a = 10.3 ft and b = 7.5 ft.

A piece of composite-lumber flooring is a = 82 mm wide. It consists of a layer of pine [E = 7.4 GPa] that is b = 13 mm thick and a layer of cherry [E = 9.2 GPa] that is c = 5 mm thick. Determine the distance to the centroid of the transformed section from the bottom of the board.