[填空题]
(a) The tube of a merx:e81c*y),ndn doxgucur o.+zx esk0/q *v6epwh:(k5 ucet8lpwy thermometer has an inside diameter of 0.140 mm. The bulb h:ue l5pcex zwhk*0ew(o/p8k +qt 6vs. as a volume of 0.255 $cm^3$ How far will the thread of mercury move when the temperature changes from 11.5 $^{\circ} $ C to 33.0 $^{\circ} $ C? Take into account expansion of the Pyrex glass. cm(b) Determine a formula for the length of the mercury column in terms of relevant variables. Ignore tube volume compared to bulb volume.