2018年高考海南物理试题解析.pdf
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1、1 2018 年高考海南物理试题解析江苏省资深特级教师戴儒京解析1.【解 析】设 石 块 自 由落 体 的 时 间 为t,他 离 地 面 的 高 度 为h,则22131gth2/8.9smg,3340ht,解得st87.2,mh4.43。选 C【答案】C 2.【解析】根据rmrTmrvmrMmG222224,B 正确。【答案】B 3.【解析】原来,sinmgBIl,后来mmgBIlasin5.1,沿斜面向上,A 正确。【答案】A 4.【解析】ggmmt5.0)21(4)21(24720,B 正确。【答案】B 2 5.【解析】动量守恒VmMmv)(,系统损失的机械能)(2)(2121222mMM
2、mvVmMmvEk=)1(2)1(222mMMvMmmv所以,A、B、D 错误;C 正确。【答案】C 6.【解析】skgVm/109.56,sJmghW/1095.29,选 D【答案】D 7.【解析】最大值BSEm,平行时,速度与磁场垂直,最大。【答案】AC 文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档
3、编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR1
4、0M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B
5、4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR
6、7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L
7、1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD
8、2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C
9、5D10文档编码:CR10M2V8B4H2 HR7O8U8L1J8 ZD2E3D5C5D103 8.【解析】10)(vMmmv,101vvvMm,110tvvga【答案】BC 9.【解析】0245cos2lkqEb=22lkq,b 与 d 等势【答案】AD 文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U1
10、0文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U
11、10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10
12、U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M1
13、0U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M
14、10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9
15、M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K
16、9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U104 10.【解析】滑片由c 向 a 滑动,R左减小,电流增大,功率变大,R右增大,电流减小,功率变小,A、B 错误。电源输出功率如下列图P出00.20.40.60.811.21.41.61.8205101520253035P出并联电阻从最大逐渐减小并且最后大于电源内阻,所以电源输出功率变大,C 正确;随并联电阻的减小,电路总电阻减小,电流增大,电源内阻消耗的功率增大,D 正确。【答案】CD 11.【解析】212
17、1gts,ntt1可解得。【答案】222tsng,9.6,适当增大n。文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM
18、10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:C
19、M10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:
20、CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码
21、:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编
22、码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档
23、编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U105
24、 12.【解析】1并联电路电流与电阻成反比0.481000.482RRA,解得2.5AR(2)2.1481R3根据全电路欧姆定律有)(1rRRIEA,变形得ErRREIA111。从图 c可求图线的斜率80067100180127.20k,则电源电动势VkE2.9678001.文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3
25、Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ3Q6K9M10U10文档编码:CM10R2Z5S2H1 HA8Z7J8I4V9 ZZ
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