15.3
- 1. 塀 犖 F 4 犖 3 40204 犖 犖 F 3 ( 犖F ) 犖 6 15 犖 3 F F 犖F 犖 F F犖 F 犖 犖, , 犖F 犖 1. F F v E 3 . 1. 犖F A C 犖犖 F 犖 F B v A B 2. 犖 q 犖 F C A 犖 F B E 3 . A F F犖 C 3. 犖F A, B C F F犖 F 犖FF 犖. F 1, 2 3 . F 1, 2 . F 2, 3 . F 1 F 2. F 2 F 犖 F A B F 100 60 F A B F F 犖 0.4 犖F A F 犖犖F B犖 犖 F 犖. F . 20 . 30 . 50 A B v 0.4 E 3. F F . 1. F F F 犖F F F 2. 犖F F F F F F 3. F F 犖F 犖 F F 犖. F 1 2 . F 1 3 . F 2 3 . F 1, 2 3 4. F F 1. F F犖 犖 犖 犖F 犖F 犖 F 2. 犖F 犖 F F 3. F F F F 犖F F F F F F 犖. F 1 2 . F 1 3 . F 2 3 . F 1, 2 3
- 2. 5. F F 犖 0.4 . F犖 F F 犖 F 犖 9x10-31 犖犖. 1.6x10-19 F F F F F F F 犖F F F犖 F 犖. 1.925x10-8 . 6.25x10-10 . 2.24x10-11 . 1.14x10-13 F F F 6 7 3 F 10-4 C 犖 F F F A,B C F F F F 1 cm 6. 犖 1 F F (A B C) 犖. 0 . 27x103 . 18x103 . 18x107 7. 犖 3 F F A, B C 3 犖. 0 . 27x10 . 18x103 . 18x107 8. F F 犖 10 cm F 犖 F 24 V F犖 犖 0.4 g -6 5x10 C F F F F 犖 3 cm 犖 F犖 F F 犖 F F F 犖 F F 犖 m/s2 犖 2 . 3 . 5 . 7 9. 2x10-5 C 犖 40 V/m F 50 cm 犖 F犖 -4 -5 -3 犖. 8x10 . 1.6x10 . 2x10 . 4x10-4 10. 3x10-4 C F X = -2 m , Y = 0 m F犖 F X=0m,Y=3m 犖F F 犖 ( 0, 0 ) 犖 F 5 犖. 9.5x10 V . 8.5x105 V . 6.5x105 V . 4.5x105 V
- 3. 塀 犖 F ( 40204 ) 犖 3 犖F 犖 幣 6 犖 犖 F 3 犖F F 1 2 3 犖 4 5 6 犖 7 8 9 10