[填空题]
(a) Estimate the rms speed :sana+4c j2s7m/a *idjia r hj,/p3eaof an amino acid whose mol abtl zc,-.s r ui5(hf,e-nd8becular mass is 89 u in a livicrbtnh 8e, idulz.f-s5 b,a(- ng cell at 37 $^{\circ} $ C. m/s
(b) What would be the rms speed of a protein of molecular mass 50,000 u at 37 $^{\circ} $ C? m/s