The U$-$shape manometer is $(10)$ mm in

diameter and contains mercury. If $(12)$ mL

of water is poured into the right leg, what

are the ultimate heights in the two legs.

$($Ans$.$ Left leg height above the

bottom $=125\mathrm{.}6mm$; right leg height above

bottom$=267\mathrm{.}2$mm$)$