1、 (A) ( ) ( ) 100 90 ( 40 ) ( 10 4 40 1 6 7 10 4 2 0 ) 1 ( 2015 2016 ) 09152468 ( B ) A B C D A B C D B 2 ( 2015 2016 ) ( ) h ( ) UI t 09152469 ( B ) A h B h C h D h A h E n t E B C D 3 d v Q t 09152470 ( C ) C A B D 4 ( 2015 2016 ) ( ) ab B t F ab F F t 09152471 ( B ) ab ab b a ab B 5 S B t 0 e 220
2、2 tV RL ) C L S 09152472 ( C ) A t 0 B 22 2V C 48.4W D S R t 0 2BS A e 220 2 tV U1 220V U1 U2 n1 n2 U2 22V B 22V 48.4W C S R D 6 L2 L3 P L1 L2 L3 n1 n2 (a) L1 (b) L1 09152473 ( B ) A P P B 9P 4 9 P C 4 9 P 9P D 4 9 P 9P (a) L2 P L2 U2 PR U1 3U2 3 PR L1 U1 L1 PL1 U 2 1 R 9PR R 9P (b) L2 L3 2P U1 3U2
3、3 PR I1 2P U1 L1 PL1 I1 2 R 4P 2 9PR R 4 9 P 7 ( 2016 ) PQ MN PQ MN PQ 09152474 ( BC ) A B C D MN MN M N L1 PQ L2 L1 L2 L2 PQ C PQ L2 L1 L2 PQ B 8 ( 2015 2016 ) B PQ a m R v PQ v/2 09152475 ( ACD ) A B 4B 2 a 2 v mRC 4B 2 a 2 v 2 RD Ba 2 R A I 2Bav R a 2F m 8B 2 a 2 v mR P I 2 R 4B 2 a 2 v 2 R B C q
4、 R Ba 2 R D 9 ( 2015 2016 ) A V 09152476 ( ABC ) A 15V B u 10 2 t)V C P D 10 2V 10V 15V A 0.02s T u 10 2 t)V B P C P R 0.5 0.25 D ABC 10 L r B t B kt( k0) R R0 P R1 R0 R2 R0 2 S U MN 09152477 ( AC ) A R2 U 7B a C R R2 5 D kL 2 P R R R0 2 R2 R R0 4 7R0 4 R2 U2 U 7 A b B 2U 7 P U 2 R0/2 8U 2 49R0 P U
5、2 R0/2 2U 2 49R0 P P P 10U 2 49R0 R2 P2 U 2 R0/2 2U 2 49R0 P P2 5 C E t r 2 B t kr 2 D ( 60 ) ( 2 7 14 ) 11 09152478 (1) a (2) K M N N M 12 R0 R Rx Rx Rx 1.8 09152479 Rx R R0 Rx R Rx R R0 R0 R Rx ( 4 46 ) 13 (10 ) 30cm ab A B 6cm R ab v A B 2cm v v 09152480 0.4m/s B AB d ab L m q E BLv Uab UAB E R R
6、 BLv 0.1 0.3 1 4 Blv A B mg Eq UAB d q m BLvq 4dg r mv Bq BLv 2 q 4dgBq Lv 2 4dg v 4dgr L 0.3 m/s 0.4m/s 14 (11 )( 2014 2015 ) 1 L 0.1m H 0.3m N1 B0 1.0T 0 2.0A I ( g 10m/s 2 ) 09152481 (1) 0.5kg N1 (2) N2 100 R 2 B0 B d 0.1m 0.01kg B t (1)25 (2)0.1T/s (1) F N1B0IL mg N1B0IL N1 25 (2) E N2 tE N2 B t Ld I E R F N2B0I L m g N 2 2B0 B t dL 2 R B t 0.1T/s 15 (12 )( 2015 2016 ) ABCD B DC N S n1 n2 c K R 09152482 (1) (2)K b R (3)K c (4)K c R (1)e sin (2) B 2 S 2 2 N 2 2n 2 1R(3) n2 2n1(4) (1)
