m
| ||
R |
mv0 |
eB |
2πm |
eB |
T |
4 |
πm |
2eB |
2R-R |
v0 |
m |
eB |
(π+2)m |
2eB |
mv0 |
eB |
mv0 |
eB |
mv0 |
eB |
mv0 |
eB |
πR2 |
4 |
R2 |
2 |
π-2 |
2 |
mv0 |
eB |
(π+2)m |
2eB |
mv0 |
eB |
mv0 |
eB |
π-2 |
2 |
mv0 |
eB |
A.s1<s2 | B.s1=s2 |
C.t1:t2=(л-θ):θ | D.t1:t2=θ:(2л-θ) |
1 |
2 |
A.
| B.
| C.
| D.
|
A.
| B.
| C.
| D.
|
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