An irregular conductor carries a surface charge density of -6.75 ...

[nmorano1]

An irregular conductor carries a surface charge density of -6.75 C/m2 at and in the vicinity of a point P on the surface. An electron is released just above P outside the conductor.
 
  What are the magnitude and direction of its acceleration the instant after it is released? (0 = 8.85  10-12 C2/N  m2, e = 1.60  10-19 C, mel = 9.11  10-31 kg)

Question 2

A neutral hollow spherical conducting shell of inner radius 1.00 cm and outer radius 3.00 cm has a +2.00-C point charge placed at its center. Find the surface charge density
  (a) on the inner surface of the shell.
 
  (b) on the outer surface of the shell.

[katkat_flores]

Answer to Question 1

1.34  1017 m/s2, away from P

Answer to Question 2

(a) -1590 C/m2 (b) +177 C/m2

[nmorano1]

Both answers were spot on, thank you once again

[katkat_flores]

Great! Please up vote