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chieudongcac
2 năm trước
trong một môi trường đồng tính , khi đăth hai điện tích q1 và q2 cách nhau 10cm thì lưcj điện tương tác giữa hcungs có độ lớn 0,006N . Hỏi khi đặt 2 điện tích này cách nhau 20cm thì lực điện tương tác giữa chúng có giá trị là bao nhiêu ?
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