34.
(a) The flux is still
−750 N·m
2
/C, since it depends only on the amount of charge enclosed.
(b) We use Φ = q/ε
0
to obtain the charge q:
q = ε
Φ =
8.85
× 10
−12
C
N
· m
/C
=
−6.64 × 10
−10
C .