T |
2 |
qU0 |
m•2l |
10-7×1.2×103 |
5×10-10×2×0.6 |
1 |
2 |
|
T |
2 |
T |
2 |
T |
2 |
T |
2 |
q•2U0 |
m•2l |
2×10-7×1.2×103 |
5×10-10×2×0.6 |
T |
2 |
T |
2 |
T |
2 |
1 |
2 |
T |
2 |
1 |
2 |
T |
2 |
1 |
2 |
1 |
2 |
T |
2 |
T |
2 |
t2 |
T |
4×10-3 |
1.2×10-2 |
T |
2 |
T |
2 |
A.大于6m/s | B.等于6m/s |
C.小于6m/s | D.条件不足,无法计算 |
A.动能损失了2mgH | B.动能损失了mgH | ||
C.机械能损失了mgH | D.机械能损失了
|
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