2tanθ |
1-2tan2θ |
1 |
2 |
|
v2 |
R |
| ||
eB |
h |
L-r |
θ |
2 |
r |
R |
h |
L-r |
| ||
1-(
|
2Rr |
R2-r2 |
| ||
eB |
h |
L-r |
2Rr |
R2-r2 |
23892 |
23490 |
A.1:1,两内切圆,半径之比为1:45 |
B.4:234,两外切圆,半径之比为45:1 |
C.234:4,两外切圆,半径之比为45:1 |
D.2:90,两内切圆,半径之比为1:45 |
A.匀速直线运动 | B.匀变速直线运动 |
C.平抛运动 | D.匀变速曲线运动 |
q |
m |
| ||
3 |
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