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

To understand the electric potential and electric field of a point charge in three dimensions consider a positive point charge q, located at the origin of three-dimensional space. throughout this problem, use k in place of 14? ? 0. part adue to symmetry, the electric field of a point charge at the origin must point from the origin. answer in one word. part bfind e(r), the magnitude of the electric field at distance r from the point charge q. express your answer in terms of r, k, and q. part cfind v(r), the electric potential at distance rfrom the point charge q. express your answer in terms of r, k, and q part dwhich of the following is the correct relationship between the magnitude of a radial electric field and its associated electric potential ? more than one answer may be correct for the particular case of a point charge at the origin, but you should choose the correct general relationship. a)e(r)=dv(r)drb)e(r)=v(r)rc)e(r)=? dv(r)drd)e(r)=? v(r)r

The movement of electrons between atoms is called an

What happens when you slowly pulled the carboard?