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Physics, 14.06.2021 15:40, paulagarza
đặt lần lượt các điện tích q1=1nC, q2=-1nC, q3=1nC, q4=1nC vào các đỉnh A, B, C ,D của hình chữ nhật, kích thước 20cm x 40cm trong không khí. Tính điện thế tại O là giao điểm của 2 đường chéo hình chữ nhật, chọn góc điện thế tại vô cùng.
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Answers: 1
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Visualize the problem and identify special cases first examine the problem by drawing a picture and visualizing the motion. apply newton's 2nd law, ∑f⃗ =ma⃗ , to each body in your mind. don't worry about which quantities are given. think about the forces on each body: how are these consistent with the direction of the acceleration for that body? can you think of any special cases that you can solve quickly now and use to test your understanding later? one special case in this problem is if m2=0, in which case block 1 would simply fall freely under the acceleration of gravity: a⃗ 1=−gj^.
Answers: 1
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đặt lần lượt các điện tích q1=1nC, q2=-1nC, q3=1nC, q4=1nC vào các đỉnh A, B, C ,D của hình chữ nhật...
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