浙江七彩阳光联盟2019届高三上学期第二次联考 物理（PDF版） 12页

1 8 100 90 2 3 4 5 g 10m s2 13 3 39 1 A B C D 2 A 2 2N m / kg B 3 2m / kg s C 3 2 4kg m / A s D 2 3kg s / m 3 A B C D 4 6 23 2018 9 91s 0 138s A 0 138s B C 10 09 m s D 5 1kg v t A B 4s C 4 s 0 4 m D 1N 6 A B C D 7 A 4 B C D 8 A B A B A A B 1 2 B A B 1 2 C A B 1 2 D A B 9 AC B P A A C B C A C A C P D C A P P A B 10 6400km 24 A 1 B 8 C 16 D 24 11 10W 900 2 A 3 106 B 1 107 C 4 108 D 2 1012 12 a b c d a Q d Q A b c B b c C c b D b c 13 1 2 6m s 30 72J 12J 12kg A B 4m s2 C 144J D 60J II 3 2 6 2 1 0 14 A1 A2 A A1+A2 B A1 A2 C D 15 a b a b A a b B a b C a b D b a 30° 16 7 4 Be K 7 3 Li ve K 7 0 7 4 1 3 eBe+ e Li+ MBe 7 016 929 u MLi 7 016 004 u 1u 9 3 102MeV A 1 B C E 0 86MeV D Li 0p 7 55 17 5 1 A B C D 2 3 F m s 3 - B A 17 17 A B C D E F G 0 1 2 3 4 5 6 7 8 9 10 11 cm 17 12 18 5 1 0 2 5V V 2 1 5V 0 3A 3mA A B 3 R0 990 10 A 0 30 B 0 3k A B 4 I1 I2 E V r r 2 18 18 18 mA1 R0 mA2 0 0.6 18 0.3 0.6 0.9 1.8 3.0 I2/mA I1/mA 1.2 1.5 1.8 1.2 2.4 19 9 AB CD BC 30 AD BC 2 5m A 0 25 m 100kg A CD 0 1 1 AB a1 2 B vB 3 CD Fmin 20 12 AB BCD B D DE EP PF AB EO2 FO3 R1 0 5 m R2 1 2 m 60 m 1kg P 10W A B t0 5s B vB 5m s 1 C 2 3 F F 30 30 h=2.5m A B C D 19 19 R2 P 20 R1 R2 O2 O3 O1 A B (D) C E F 21 4 k m g 1 T 2 T m m T L A T a b c 22 10 l 0 20m m 0 01kg R 0 ab x0 0 30m B 0 50T x 0 x x1 x1 h 0 2m ab cd 1 cd 2 cd ab 3 A A 21 (a) (b) (c) 23 10 L DCEF DC S k k >0 v0 DC S 1 C B 2 1 S S S v tmin 3 a 2 O S S v v0 × × × × × × × × × × × × × × × × × × × × × E S F D C 23 1 v 23 2 × × × × × × × × × × × × × × × × × × × × × × × E S F D C O 13 3 39 1 2 3 4 5 6 7 8 9 10 11 12 13 B B B C C D B D A C C B C 13 3 39 14 15 16 AD BC ACD 4 31 17 1 BCD 1 CD 1 2 1 B 1 3 0.225 ±0.002 1 18 1 0.70 ± 0.01 1 2 B 1 3 B 1 4 1.45V 1.50V 1 5.2×102 5.8×102 1 19 1 1130sin mafmg f1=0.25mg 2 1a 2.5m/s2 1 2 A B hhLAB 230sin 1 ABB Lav 1 2 2 1 vB = 5m/s 1 3 CD F mgsin30°+ f2 Fmin = mgsin30°+ f2 2 = 600N 1 20 1 B C 22 1 2 1 2 12 BC mvmvRmg 1 1 C 1 FN = 0 1 2 A B Wf 1 J5.37fW 1 3 C F 22 2 2 1 2 1)cos1(2 BF mvmvRmg m/s1Fv C F 1m/s 2 F F F vF m/s vF 2 A F 2 2 2 1)cos1(2 Ff mvRmgWPt 1 5 s t 1 21.: 1 1 2 mgL k (b) m,T2 1 3 0 =2mv mv Bl q mv mv 1 23. 1 2vqvB m R C 2 n=1 02v v S 3 C b, S S R b n=1 R=L/2 n=2 R=L/6 n=3 R=L/10 n=4 R=L/14 n=3,4,5 1