[填空题]
Calculate the electric field atmk6 la(q0*lry one corner of a square 1.00 m on a side if the oa* rklm6(0qly om:ov 88z u qvp*o. d7o7ge,cfther three corners q o gu7 ofo788p*:eczd, mv.ovare occupied by $ 2.25\times10^{-6 }\,C$ charges. $ \times10^{4 }\,N/C$ $^{\circ}\,$ from the x-direction.