Two charged point$-$like objects are located on the x$-$axis. The point$-$like object with charge

q$1=4\mathrm{.}10$C

is located at

x$1=1\mathrm{.}25$ cm

and the point$-$like object with charge

q$2=2\mathrm{.}26$C

is located at

x$2=1\mathrm{.}80$ cm$.$

$($a$)$

Determine the total electric potential $($in V$)$ at the origin.

V

$($b$)$

Determine the total electric potential $($in V$)$ at the point with coordinates $(0,1\mathrm{.}50$ cm$).$

V