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hungqn1234
2 năm trước
Một electron ( m=9,1.10^-31 kg, q = -1,6.10^-19C) bay với vận tốc v = 2.10^6 m/s vào từ trường đều B = 1,82.10^-5 T. Tính số vòng quay gần đúng trong 1 giây của electron nếu electron bay vuông góc với từ trường?
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