Which of these bodies has redundant constraints for the given loading conditions? F1 and F2 are applied, known forces.

A. In the first choice, the support at A is fixed and a cable connects points B and C.
B. In the second choice, the support at A is a smooth pin, and a cable connects points B and C.
C. In the third choice, the support at A is a single thrust bearing, and a cable connects points B and C.
D. In the fourth choice, the supports at A and B are hinges, and the support at C is a roller.

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.

report!

explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."

+15-35=-20

going in opposite directions