[填空题]
How much work must be done to bring .8 vin3cdw.rithree electronl4* wg;5 oa:1pisuklxs from a great distance apart top l:wka4i;s *51gloux $1.0 \times10^{-10 }\,m$ from one another (at the corners of an equilateral triangle)? $ \times10^{-18 }\,J$
