[填空题]
What are the magnitude and direction of the electric field at amyt,kq69i1yl ,ucr u0 point midway be4g/ .zu)al1f05exan1h2d8e2zhjpe efb 1a j yt pe.10ef2ajub aaj5/h 4g)f1eez8n2x z1ly h dween a $-8.0\,\mu C\,$ and a $+7.0\,\mu C\,$ charge 8.0 cm apart? Assume no other charges are nearby. $ \times10^{7 }\,N/C$
参考答案: 空格1: 8.4±2%
空格2: towards the negative charde
