Homework Statement
Begin from the expression of the electric field outside an infinite sheet of uniform surface charge density, E=\frac{σ}{2\epsilon}. Derive the electric field just outside an ideal conductor: E=\frac{σ}{\epsilon}. Do NOT use Gauss's law.
Homework Equations
Not sure...
Homework Statement
An electric dipole is located along the y-axis as shown in (picture attached). The magnitude of its electric dipole moment is defined as p=2aq.
(a) At a point P, which is far from the dipole (r>>a), show that the electric potential is
V=\frac{k_{e}pcosθ}{r^{2}}
(b)...
Spring, Block, KE, PE, Incline Problem: Why is KE=ZERO??
A 250 g block is pressed against a spring of force constant 1500 N/m until the block compresses the spring 8.0 cm. The spring rests at the bottom of a ramp inclined at 60.0 degrees to the horizontal. Using energy considerations, determine...