[填空题]
A point charge is plaro:tq,n(gq1 d+-d rrxk qh)i )c2,hcqbbhd +b0 ed 36 cm from an identical $+33\mu C$ charge. A $-1.5\mu C$ charge is moved from point a to point b in Fig. 17–34. What is the change in potential energy? $\approx$ J (round to one decimal place)
