A

cube

is

defined

by

I

$<$

x$,$

y$,$

z

$<$

$1\mathrm{.}2.$

If

D

$=$

$2$x$2$va$,$

$+$

$3.$v$2$v$2$a

C$/$rn$2$

$($a$)$

Apply Gauss$$s

law

to find

the

total

flux

leaving

the

closed

surface

of

the

cube. $($b$)$

Evaluate

V$.$

D at

the

center of

the

cube.

$($c$)$

Estimate

the total

charge

enclosed

within

the

cube

by

using

Eq$.$

$(8)$

Use result from part b$)$ to find total charge

enclosed by cube and compare to part a$).$