qE |
m |
v0 |
a |
v0 |
a |
2mv0 |
qE |
| ||
R |
mv0 |
qB |
| ||
qB |
1 |
2 |
t | 23 |
qE |
2m |
t | 23 |
s2 |
s1 |
2mv0 |
qE |
qE |
m |
2mv0 |
qE |
|
5 |
2mv0 |
qE |
| ||
qB |
5 |
mg |
q |
A.微粒作匀加速直线运动 |
B.微粒的电势能减少了mgd |
C.两极板的电势差为mgd/q |
D.M板的电势低于N板的电势 |
A.tAB>tAC | B.tAB=tAC | C.tAB<tAC | D.无法比较 |
A.增加粒子带电量q | B.降低加速电压U1 |
C.提高偏转电压U2 | D.增大两平行板间距离d |
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