A circle of diameter d =25 cm is scribed onto an unstressed square of 40cm*40cm aluminum plate if thickness t= 2cm. Force are applied to the plate such that the stresses in the x and y directions are 85MPa ahd 140MPa. If aluminum has a Young's modulus E=70 GPa and a poisson ratio v = 0.33, determine.

1) The change in the length of the circle diameter AB.
2) the change in the length of the circle diameter CD.
3)The change in the thickness of the plate
4) The change in the volume of the plate

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia

the answer is 100. i just did this lesson and got a 100% on it. : )

-fishtank

both the fifth and fourteenth amendments of the united states contain a due process clause. while the fifth amendment describes a legal obligation of the federal government to not deprived of life, liberty or property without due process of law, the fourteenth amendment applies the same obligation to the states to guarantee that all of the states provide fair procedures as well.