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baonguyentran119
2 năm trước
Câu 1. Xe chạy một thời gian dài. Sau khi xuống xe, sờ vào thành xe, đôi lúc ta thấy đôi lúc như bị điện giật. Vì sao? Câu 2. Tại sao khi ta cầm một thanh kim loại vào tay, rồi cọ xát nó vào len dạ thì không thấy nó bị nhiễm điện?
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