几道初二简单物理题好的加分【没注明的不要解答过程公式】只要正确答案就好
\u51e0\u9053\u521d\u4e8c\u7b80\u5355\u7269\u7406\u9898\u597d\u7684\u52a0\u5206\u3010\u6ca1\u6ce8\u660e\u7684\u4e0d\u8981\u89e3\u7b54\u8fc7\u7a0b\u516c\u5f0f\u3011\u53ea\u8981\u6b63\u786e\u7b54\u6848\u5c31\u597d\uff081\uff09p=\u6db2\u9762\u5dee*\u6db2\u4f53\u5bc6\u5ea6*\u91cd\u529b\u52a0\u901f\u5ea6
\uff082\uff09\u770b\u4e0d\u61c2\u9898\u3002\u3002\u3002\u3002\u3002\u3002\u3002
\uff083\uff09\u5927\u6c14\u538b\u529b\u4e0e\u91cd\u529b \u589e\u5927\u538b\u5f3a\uff0c\u4fbf\u4e8e\u6ce8\u5c04
\u6700\u4f73\u7b54\u6848\u4e00\u3001\u957f\u5ea6\u7684\u6d4b\u91cf
1\u3001\u957f\u5ea6\u7684\u6d4b\u91cf
\u957f\u5ea6\u7684\u6d4b\u91cf\u662f\u6700\u57fa\u672c\u7684\u6d4b\u91cf\uff0c\u6700\u5e38\u7528\u7684\u5de5\u5177\u662f\u523b\u5ea6\u5c3a\u3002
2\u3001\u957f\u5ea6\u7684\u5355\u4f4d\u53ca\u6362\u7b97
\u957f\u5ea6\u7684\u56fd\u9645\u5355\u4f4d\u662f\u7c73(m)\uff0c\u5e38\u7528\u7684\u5355\u4f4d\u6709\u5343\u7c73\uff08Km\uff09\uff0c\u5206\u7c73\uff08dm\uff09\u5398\u7c73\uff08cm\uff09\uff0c\u6beb\u7c73\uff08mm\uff09\u5fae\u7c73\uff08um\uff09\u7eb3\u7c73\uff08nm\uff09
1Km 103 m 10 m 10 dm 10 cm 10 mm 103um 103 nm
\u957f\u5ea6\u7684\u5355\u4f4d\u6362\u7b97\u65f6\uff0c\u5c0f\u5355\u4f4d\u53d8\u5927\u5355\u4f4d\u7528\u4e58\uff0c\u5927\u5355\u4f4d\u6362\u5c0f\u5355\u4f4d\u7528\u9664
3\u3001\u6b63\u786e\u4f7f\u7528\u523b\u5ea6\u5c3a
\uff081\uff09\u4f7f\u7528\u524d\u8981\u6ce8\u610f\u89c2\u5bdf\u96f6\u523b\u5ea6\u7ebf\u3001\u91cf\u7a0b\u3001\u5206\u5ea6\u503c
\uff082\uff09\u4f7f\u7528\u65f6\u8981\u6ce8\u610f
\u2460 \u5c3a\u5b50\u8981\u6cbf\u7740\u6240\u6d4b\u957f\u5ea6\u653e\uff0c\u5c3a\u8fb9\u5bf9\u9f50\u88ab\u6d4b\u5bf9\u8c61\uff0c\u5fc5\u987b\u653e\u6b63\u91cd\u5408\uff0c\u4e0d\u80fd\u6b6a\u659c\u3002
\u2461 \u4e0d\u5229\u7528\u78e8\u635f\u7684\u96f6\u523b\u5ea6\u7ebf\uff0c\u5982\u56e0\u96f6\u523b\u7ebf\u78e8\u635f\u800c\u53d6\u53e6\u4e00\u6574\u523b\u5ea6\u7ebf\u4e3a\u96f6\u523b\u7ebf\u7684\uff0c\u5207\u83ab\u5fd8\u8bb0\u6700\u540e\u8bfb\u6570\u4e2d\u51cf\u6389\u6240\u53d6\u4ee3\u96f6\u523b\u7ebf\u7684\u523b\u5ea6\u503c\u3002
\u2462 \u539a\u5c3a\u5b50\u8981\u5782\u76f4\u653e\u7f6e
\u2463 \u8bfb\u6570\u65f6\uff0c\u89c6\u7ebf\u5e94\u4e0e\u5c3a\u9762\u5782\u76f4
4\u3001\u6b63\u786e\u8bb0\u5f55\u6d4b\u91cf\u503c
\u6d4b\u91cf\u7ed3\u679c\u7531\u6570\u5b57\u548c\u5355\u4f4d\u7ec4\u6210
\uff081\uff09 \u53ea\u5199\u6570\u5b57\u800c\u65e0\u5355\u4f4d\u7684\u8bb0\u5f55\u65e0\u610f\u4e49
\uff082\uff09 \u8bfb\u6570\u65f6\uff0c\u8981\u4f30\u8bfb\u5230\u523b\u5ea6\u5c3a\u5206\u5ea6\u503c\u7684\u4e0b\u4e00\u4f4d
5\u3001\u8bef\u5dee
\u6d4b\u91cf\u503c\u4e0e\u771f\u5b9e\u503c\u4e4b\u95f4\u7684\u5dee\u5f02
\u8bef\u5dee\u4e0d\u80fd\u907f\u514d\uff0c\u80fd\u5c3d\u91cf\u51cf\u5c0f\uff0c\u9519\u8bef\u80fd\u591f\u907f\u514d\u662f\u4e0d\u8be5\u53d1\u751f\u7684
\u51cf\u5c0f\u8bef\u5dee\u7684\u57fa\u672c\u65b9\u6cd5\uff1a\u591a\u6b21\u6d4b\u91cf\u6c42\u5e73\u5747\u503c\uff0c\u53e6\u5916\uff0c\u9009\u7528\u7cbe\u5bc6\u4eea\u5668\uff0c\u6539\u8fdb\u6d4b\u91cf\u65b9\u6cd5\u4e5f\u53ef\u4ee5\u51cf\u5c0f\u8bef\u5dee
6\u3001\u7279\u6b8a\u65b9\u6cd5\u6d4b\u91cf
\uff081\uff09\u7d2f\u79ef\u6cd5
\u5982\u6d4b\u7ec6\u91d1\u5c5e\u4e1d\u76f4\u5f84\u6216\u6d4b\u5f20\u7eb8\u7684\u539a\u5ea6\u7b49
\uff082\uff09\u5361\u5c3a\u6cd5
\uff083\uff09\u4ee3\u66ff\u6cd5
\u4e8c\u3001\u7b80\u5355\u7684\u8fd0\u52a8
1\u3001\u673a\u68b0\u8fd0\u52a8
\u7269\u4f53\u4f4d\u7f6e\u7684\u53d8\u5316\u53eb\u673a\u68b0\u8fd0\u52a8
\u4e00\u5207\u7269\u4f53\u90fd\u5728\u8fd0\u52a8\uff0c\u7edd\u5bf9\u4e0d\u52a8\u7684\u7269\u4f53\u662f\u6ca1\u6709\u7684\uff0c\u8fd9\u5c31\u662f\u8bf4\u8fd0\u52a8\u662f\u7edd\u5bf9\u7684\uff0c\u6211\u4eec\u5e73\u5e38\u8bf4\u7684\u8fd0\u52a8\u548c\u9759\u6b62\u90fd\u662f\u76f8\u5bf9\u4e8e\u53e6\u4e00\u4e2a\u7269\u4f53\uff08\u53c2\u7167\u7269\uff09\u800c\u8a00\u7684\uff0c\u6240\u4ee5\uff0c\u5bf9\u8fd0\u52a8\u7684\u63cf\u8ff0\u662f\u76f8\u5bf9\u7684
2\u3001\u53c2\u7167\u7269
\u7814\u7a76\u673a\u68b0\u8fd0\u52a8\u65f6\u88ab\u9009\u4f5c\u6807\u51c6\u7684\u7269\u4f53\u53eb\u53c2\u7167\u7269
\uff081\uff09 \u53c2\u7167\u7269\u5e76\u4e0d\u90fd\u662f\u76f8\u5bf9\u5730\u9762\u9759\u6b62\u4e0d\u52a8\u7684\u7269\u4f53\uff0c\u53ea\u662f\u9009\u54ea\u4e2a\u7269\u4f53\u4e3a\u53c2\u7167\u7269\uff0c\u6211\u4eec\u5c31\u5047\u5b9a\u7269\u4f53\u4e0d\u52a8
\uff082\uff09 \u53c2\u7167\u7269\u53ef\u4efb\u610f\u9009\u53d6\uff0c\u4f46\u9009\u53d6\u7684\u53c2\u7167\u7269\u4e0d\u540c\uff0c\u5bf9\u540c\u4e00\u7269\u4f53\u7684\u8fd0\u52a8\u60c5\u51b5\u7684\u63cf\u8ff0\u53ef\u80fd\u4e0d\u540c
3\u3001\u76f8\u5bf9\u9759\u6b62
\u4e24\u4e2a\u4ee5\u540c\u6837\u5feb\u6162\u3001\u5411\u540c\u4e00\u65b9\u5411\u8fd0\u52a8\u7684\u7269\u4f53\uff0c\u6216\u5b83\u4eec\u4e4b\u95f4\u7684\u4f4d\u7f6e\u4e0d\u53d8\uff0c\u5219\u8fd9\u4e24\u4e2a\u7269\u4f53\u76f8\u5bf9\u9759\u6b62\u3002
4\u3001\u5300\u901f\u76f4\u7ebf\u8fd0\u52a8
\u5feb\u6162\u4e0d\u53d8\u3001\u7ecf\u8fc7\u7684\u8def\u7ebf\u662f\u76f4\u7ebf\u7684\u8fd0\u52a8\uff0c\u53eb\u505a\u5300\u901f\u76f4\u7ebf\u8fd0\u52a8
\u5300\u901f\u76f4\u7ebf\u8fd0\u52a8\u662f\u6700\u7b80\u5355\u7684\u673a\u68b0\u8fd0\u52a8\u3002
5\u3001\u901f\u5ea6
\uff081\uff09 \u901f\u5ea6\u662f\u8868\u793a\u7269\u4f53\u8fd0\u52a8\u5feb\u6162\u7684\u7269\u7406\u91cf\u3002
\uff082\uff09 \u5728\u5300\u901f\u76f4\u7ebf\u52a8\u52a8\u4e2d\uff0c\u901f\u5ea6\u7b49\u4e8e\u8fd0\u52a8\u7269\u4f53\u5728\u5355\u4f4d\u65f6\u95f4\u5185\u901a\u8fc7\u7684\u8def\u7a0b
\uff083\uff09 \u901f\u5ea6\u516c\u5f0f\uff1av= S t
\uff084\uff09 \u901f\u5ea6\u7684\u5355\u4f4d
\u56fd\u9645\u5355\u4f4d \uff1am/s \u5e38\u7528\u5355\u4f4d\uff1akm/h 1m/s = 3.6 km/h
6\u3001\u5e73\u5747\u901f\u5ea6
\u505a\u53d8\u901f\u8fd0\u52a8\u7684\u7269\u4f53\u901a\u8fc7\u67d0\u6bb5\u8def\u7a0b\u8ddf\u901a\u8fc7\u8fd9\u6bb5\u8def\u7a0b\u6240\u7528\u7684\u65f6\u95f4\u4e4b\u6bd4\uff0c\u53eb\u7269\u4f53\u5728\u8fd9\u6bb5\u8def\u7a0b\u4e0a\u7684\u5e73\u5747\u901f\u5ea6
\u6c42\u5e73\u901f\u5ea6\u5fc5\u987b\u6307\u660e\u662f\u5728\u54ea\u6bb5\u8def\u7a0b\u6216\u65f6\u95f4\u5185\u7684\u5e73\u5747\u901f\u5ea6
7\u3001\u6d4b\u5e73\u5747\u901f\u5ea6
\u539f\u7406\uff1av = s / t
\u6d4b\u7406\u5de5\u5177\uff1a\u523b\u5ea6\u5c3a\u3001\u505c\u8868\uff08\u6216\u5176\u5b83\u8ba1\u65f6\u5668\uff09
\u4e09\u3001\u58f0\u73b0\u8c61
1\u3001\u58f0\u97f3\u7684\u53d1\u751f
\u4e00\u5207\u6b63\u5728\u53d1\u58f0\u7684\u7269\u4f53\u90fd\u5728\u632f\u52a8\uff0c\u632f\u52a8\u505c\u6b62\uff0c\u53d1\u58f0\u4e5f\u5c31\u505c\u6b62\u3002
\u58f0\u95f4\u662f\u7531\u7269\u4f53\u7684\u632f\u52a8\u4ea7\u751f\u7684\uff0c\u4f46\u5e76\u4e0d\u662f\u6240\u6709\u7684\u632f\u52a8\u90fd\u4f1a\u53d1\u51fa\u58f0\u95f4
2\u3001\u58f0\u95f4\u7684\u4f20\u64ad
\u58f0\u97f3\u7684\u4f20\u64ad\u9700\u8981\u4ecb\u8d28\uff0c\u771f\u7a7a\u4e0d\u80fd\u4f20\u58f0
\uff081\uff09\u58f0\u95f4\u8981\u9760\u4e00\u5207\u6c14\u4f53\uff0c\u6db2\u4f53\u3001\u56fa\u4f53\u4f5c\u5a92\u4ecb\u4f20\u64ad\u51fa\u53bb\uff0c\u8fd9\u4e9b\u4f5c\u4e3a\u4f20\u64ad\u5a92\u4ecb\u7684\u7269\u8d28\u79f0\u4e3a\u4ecb\u8d28\u3002\u767b\u4e0a\u6708\u7403\u7684\u5b87\u822a\u5458\u5373\u4f7f\u9762\u5bf9\u9762\u4ea4\u8c08\uff0c\u4e5f\u9700\u8981\u9760\u65e0\u7ebf\u7535\uff0c\u90a3\u5c31\u662f\u56e0\u4e3a\u6708\u7403\u4e0a\u6ca1\u6709\u7a7a\u6c14\uff0c\u771f\u7a7a\u4e0d\u80fd\u4f20\u58f0
\uff082\uff09\u58f0\u95f4\u5728\u4e0d\u540c\u4ecb\u8d28\u4e2d\u4f20\u64ad\u901f\u5ea6\u4e0d\u540c
3\u3001\u56de\u58f0
\u58f0\u97f3\u5728\u4f20\u64ad\u8fc7\u7a0b\u4e2d\uff0c\u9047\u5230\u969c\u788d\u7269\u88ab\u53cd\u5c04\u56de\u6765\u4eba\u518d\u6b21\u542c\u5230\u7684\u58f0\u97f3\u53eb\u56de\u58f0
\uff081\uff09 \u533a\u522b\u56de\u58f0\u4e0e\u539f\u58f0\u7684\u6761\u4ef6\uff1a\u56de\u58f0\u5230\u8fbe\u4eba\u7684\u8033\u6735\u6bd4\u539f\u58f0\u665a0.1\u79d2\u4ee5\u4e0a\u3002
\uff082\uff09 \u4f4e\u4e8e0.1\u79d2\u65f6\uff0c\u5219\u53cd\u5c04\u56de\u6765\u7684\u58f0\u95f4\u53ea\u80fd\u4f7f\u539f\u58f0\u52a0\u5f3a\u3002
\uff083\uff09 \u5229\u7528\u56de\u58f0\u53ef\u6d4b\u6d77\u6df1\u6216\u53d1\u58f0\u4f53\u8ddd\u969c\u788d\u7269\u6709\u591a\u8fd0
4\u3001\u97f3\u8c03
\u58f0\u97f3\u7684\u9ad8\u4f4e\u53eb\u97f3\u8c03\uff0c\u5b83\u662f\u7531\u53d1\u58f0\u4f53\u632f\u52a8\u9891\u7387\u51b3\u5b9a\u7684\uff0c\u9891\u7387\u8d8a\u5927\uff0c\u97f3\u8c03\u8d8a\u9ad8\u3002
5\u3001\u54cd\u5ea6
\u58f0\u97f3\u7684\u5927\u5c0f\u53eb\u54cd\u5ea6\uff0c\u54cd\u5ea6\u8ddf\u53d1\u58f0\u4f53\u632f\u52a8\u7684\u632f\u5e45\u5927\u5c0f\u6709\u5173\uff0c\u8fd8\u8ddf\u58f0\u6e90\u5230\u4eba\u8033\u7684\u8ddd\u79bb\u8fdc\u8fd1\u6709\u5173
6\u3001\u97f3\u8272
\u4e0d\u540c\u53d1\u58f0\u4f53\u6240\u53d1\u51fa\u7684\u58f0\u97f3\u7684\u54c1\u8d28\u53eb\u97f3\u8272
7\u3001\u566a\u58f0\u53ca\u6765\u6e90
\u4ece\u7269\u7406\u89d2\u5ea6\u770b\uff0c\u566a\u58f0\u662f\u6307\u53d1\u58f0\u4f53\u505a\u65e0\u89c4\u5219\u5730\u6742\u4e71\u65e0\u7ae0\u632f\u52a8\u65f6\u53d1\u51fa\u7684\u58f0\u97f3\u3002\u4ece\u73af\u4fdd\u89d2\u5ea6\u770b\uff0c\u51e1\u662f\u59a8\u788d\u4eba\u4eec\u6b63\u5e38\u4f11\u606f\u3001\u5b66\u4e60\u548c\u5de5\u4f5c\u7684\u58f0\u97f3\u90fd\u5c5e\u4e8e\u566a\u58f0\u3002
8\u3001\u58f0\u95f4\u7b49\u7ea7\u7684\u5212\u5206
\u4eba\u4eec\u7528\u5206\u8d1d\u6765\u5212\u5206\u58f0\u97f3\u7684\u7b49\u7ea7\uff0c30dB\u201440dB\u662f\u8f83\u7406\u60f3\u7684\u5b89\u9759\u73af\u5883\uff0c\u8d85\u8fc750dB\u5c31\u4f1a\u5f71\u54cd\u7761\u7720\uff0c70dB\u4ee5\u4e0a\u4f1a\u5e72\u6270\u8c08\u8bdd\uff0c\u5f71\u54cd\u5de5\u4f5c\u6548\u7387\uff0c\u957f\u671f\u751f\u6d3b\u572890dB\u4ee5\u4e0a\u7684\u566a\u58f0\u73af\u5883\u4e2d\uff0c\u4f1a\u5f71\u54cd\u542c\u529b\u3002
9\u3001\u566a\u58f0\u51cf\u5f31\u7684\u9014\u5f84
\u53ef\u4ee5\u5728\u58f0\u6e90\u5904\u3001\u4f20\u64ad\u8fc7\u7a0b\u4e2d\u548c\u4eba\u8033\u5904\u51cf\u5f31
\u56db\u3001\u70ed\u73b0\u8c61
1\u3001\u6e29\u5ea6
\u7269\u4f53\u7684\u51b7\u70ed\u7a0b\u5ea6\u53eb\u6e29\u5ea6
2\u3001\u6444\u6c0f\u6e29\u5ea6
\u628a\u51b0\u6c34\u6df7\u5408\u7269\u7684\u6e29\u5ea6\u89c4\u5b9a\u4e3a0\u5ea6\uff0c\u628a1\u6807\u51c6\u5927\u6c14\u538b\u4e0b\u6cb8\u6c34\u7684\u6e29\u5ea6\u89c4\u5b9a\u4e3a100\u5ea6\u3002
3\u3001\u6e29\u5ea6\u8ba1
\uff081\uff09 \u539f\u7406\uff1a\u6db2\u4f53\u7684\u70ed\u80c0\u51b7\u7f29\u7684\u6027\u8d28\u5236\u6210\u7684
\uff082\uff09 \u6784\u9020\uff1a\u73bb\u7483\u58f3\u3001\u6bdb\u7ec6\u7ba1\u3001\u73bb\u7483\u6ce1\u3001\u523b\u5ea6\u53ca\u6db2\u4f53
\uff083\uff09 \u4f7f\u7528\uff1a\u4f7f\u7528\u6e29\u5ea6\u8ba1\u4ee5\u524d\uff0c\u8981\u6ce8\u610f\u89c2\u5bdf\u91cf\u7a0b\u548c\u8ba4\u6e05\u5206\u5ea6\u503c
\u4f7f\u7528\u6e29\u5ea6\u8ba1\u505a\u5230\u4ee5\u4e0b\u4e09\u70b9
\u2460 \u6e29\u5ea6\u8ba1\u4e0e\u5f85\u6d4b\u7269\u4f53\u5145\u5206\u63a5\u89e6
\u2461 \u5f85\u793a\u6570\u7a33\u5b9a\u540e\u518d\u8bfb\u6570
\u2462 \u8bfb\u6570\u65f6\uff0c\u89c6\u7ebf\u8981\u4e0e\u6db2\u9762\u4e0a\u8868\u9762\u76f8\u5e73\uff0c\u6e29\u5ea6\u8ba1\u4ecd\u4e0e\u5f85\u6d4b\u7269\u4f53\u7d27\u5bc6\u63a5\u89e6
4\u3001\u4f53\u6e29\u8ba1\uff0c\u5b9e\u9a8c\u6e29\u5ea6\u8ba1\uff0c\u5bd2\u6691\u8868\u7684\u4e3b\u8981\u533a\u522b
\u6784 \u9020 \u91cf\u7a0b \u5206\u5ea6\u503c \u7528 \u6cd5
\u4f53\u6e29\u8ba1 \u73bb\u7483\u6ce1\u4e0a\u65b9\u6709\u7f29\u53e3 35\u201442\u2103 0.1\u2103 \u2460 \u79bb\u5f00\u4eba\u4f53\u8bfb\u6570
\u2461 \u7528\u524d\u9700\u7529
\u5b9e\u9a8c\u6e29\u5ea6\u8ba1 \u65e0 \u201420\u2014100\u2103 1\u2103 \u4e0d\u80fd\u79bb\u5f00\u88ab\u6d4b\u7269\u8bfb\u6570\uff0c\u4e5f\u4e0d\u80fd\u7529
\u5bd2\u6691\u8868 \u65e0 \u201430 \u201450\u2103 1\u2103 \u540c\u4e0a
5\u3001\u7194\u5316\u548c\u51dd\u56fa
\u7269\u8d28\u4ece\u56fa\u6001\u53d8\u6210\u6db2\u6001\u53eb\u7194\u5316\uff0c\u7194\u5316\u8981\u5438\u70ed
\u7269\u8d28\u4ece\u6db2\u6001\u53d8\u6210\u56fa\u6001\u53eb\u51dd\u56fa\uff0c\u51dd\u56fa\u8981\u653e\u70ed
6\u3001\u7194\u70b9\u548c\u51dd\u56fa\u70b9
\uff081\uff09 \u56fa\u4f53\u5206\u6676\u4f53\u548c\u975e\u6676\u4f53\u4e24\u7c7b
\uff082\uff09 \u7194\u70b9\uff1a\u6676\u4f53\u90fd\u6709\u4e00\u5b9a\u7684\u7194\u5316\u6e29\u5ea6\uff0c\u53eb\u7194\u70b9
\u51dd\u56fa\u70b9\uff1a\u6676\u4f53\u8005\u6709\u4e00\u5b9a\u7684\u51dd\u56fa\u6e29\u5ea6\uff0c\u53eb\u51dd\u56fa\u70b9
\u540c\u4e00\u79cd\u7269\u8d28\u7684\u51dd\u56fa\u70b9\u8ddf\u5b83\u7684\u8ff7\u7194\u70b9\u76f8\u540c
7\u3001\u7269\u8d28\u4ece\u6db2\u6001\u53d8\u4e3a\u6c14\u6001\u53eb\u6c7d\u5316\uff0c\u6c7d\u5316\u6709\u4e24\u79cd\u4e0d\u540c\u7684\u65b9\u5f0f\uff1a\u84b8\u53d1\u548c\u6cb8\u817e\uff0c\u8fd9\u4e24\u79cd\u65b9\u5f0f\u90fd\u8981\u5438\u70ed
8\u3001\u84b8\u53d1\u73b0\u8c61
\uff081\uff09 \u5b9a\u4e49\uff1a\u84b8\u53d1\u662f\u6db2\u4f53\u5728\u4efb\u4f55\u6e29\u5ea6\u4e0b\u90fd\u80fd\u53d1\u751f\u7684\uff0c\u5e76\u4e14\u53ea\u5728\u6db2\u4f53\u8868\u9762\u53d1\u751f\u7684\u6c7d\u5316\u73b0\u8c61
\uff082\uff09 \u5f71\u54cd\u84b8\u53d1\u5feb\u6162\u7684\u56e0\u7d20\uff1a\u6db2\u4f53\u6e29\u5ea6\u9ad8\u4f4e\uff0c\u6db2\u4f53\u8868\u9762\u79ef\u5927\u5c0f\uff0c\u6db2\u4f53\u8868\u9762\u7a7a\u6c14\u6d41\u52a8\u7684\u5feb\u6162
9\u3001\u6cb8\u817e\u73b0\u8c61
\uff081\uff09 \u5b9a\u4e49\uff1a\u6cb8\u817e\u662f\u5728\u6db2\u4f53\u5185\u90e8\u548c\u8868\u9762\u540c\u65f6\u8fdb\u884c\u7684\u5267\u70c8\u7684\u6c7d\u5316\u73b0\u8c61
\uff082\uff09 \u6db2\u4f53\u6cb8\u817e\u7684\u6761\u4ef6\uff1a\u2460\u6e29\u5ea6\u8fbe\u5230\u6cb8\u70b9\u2461\u7ee7\u7eed\u5438\u6536\u70ed\u91cf
10\u3001\u5347\u5316\u548c\u51dd\u5316\u73b0\u8c61
\uff081\uff09 \u7269\u8d28\u4ece\u56fa\u6001\u76f4\u63a5\u53d8\u6210\u6c14\u6001\u53eb\u5347\u534e\uff0c\u4ece\u6c14\u6001\u76f4\u63a5\u53d8\u6210\u56fa\u6001\u53eb\u51dd\u534e
\uff082\uff09 \u65e5\u5e38\u751f\u6d3b\u4e2d\u7684\u5347\u534e\u548c\u51dd\u534e\u73b0\u8c61\uff08\u51b0\u51bb\u7684\u6e7f\u8863\u670d\u53d8\u5e72\uff0c\u51ac\u5929\u770b\u5230\u971c\uff09
11\u3001\u5347\u534e\u5438\u70ed\uff0c\u51dd\u534e\u653e\u70ed
\u4e94\u3001\u5149\u7684\u53cd\u5c04
1\u3001\u5149\u6e90\uff1a\u80fd\u591f\u53d1\u5149\u7684\u7269\u4f53\u53eb\u5149\u6e90
2\u3001\u5149\u5728\u5747\u5300\u4ecb\u8d28\u4e2d\u662f\u6cbf\u76f4\u7ebf\u4f20\u64ad\u7684
\u5927\u6c14\u5c42\u662f\u4e0d\u5747\u5300\u7684\uff0c\u5f53\u5149\u4ece\u5927\u6c14\u5c42\u5916\u5c04\u5230\u5730\u9762\u65f6\uff0c\u5149\u7ebf\u53d1\u4e86\u4e86\u5f2f\u6298
3\u3001\u5149\u901f
\u5149\u5728\u4e0d\u540c\u7269\u8d28\u4e2d\u4f20\u64ad\u7684\u901f\u5ea6\u4e00\u822c\u4e0d\u540c\uff0c\u771f\u7a7a\u4e2d\u6700\u5feb\uff0c
\u5149\u5728\u771f\u7a7a\u4e2d\u7684\u4f20\u64ad\u901f\u5ea6\uff1aC = 3\u00d7108 m/s\uff0c\u5728\u7a7a\u6c14\u4e2d\u7684\u901f\u5ea6\u63a5\u8fd1\u4e8e\u8fd9\u4e2a\u901f\u5ea6\uff0c\u6c34\u4e2d\u7684\u901f\u5ea6\u4e3a3/4C\uff0c\u73bb\u7483\u4e2d\u4e3a2/3C
4\u3001\u5149\u76f4\u7ebf\u4f20\u64ad\u7684\u5e94\u7528
\u53ef\u89e3\u91ca\u8bb8\u591a\u5149\u5b66\u73b0\u8c61\uff1a\u6fc0\u5149\u51c6\u76f4\uff0c\u5f71\u5b50\u7684\u5f62\u6210\uff0c\u6708\u98df\u3001\u65e5\u98df\u7684\u5f62\u6210\u3001\u5c0f\u5b54\u6210\u50cf\u7b49
5\u3001\u5149\u7ebf
\u5149\u7ebf\uff1a\u8868\u793a\u5149\u4f20\u64ad\u65b9\u5411\u7684\u76f4\u7ebf\uff0c\u5373\u6cbf\u5149\u7684\u4f20\u64ad\u8def\u7ebf\u753b\u4e00\u76f4\u7ebf\uff0c\u5e76\u5728\u76f4\u7ebf\u4e0a\u753b\u4e0a\u7bad\u5934\u8868\u793a\u5149\u7684\u4f20\u64ad\u65b9\u5411\uff08\u5149\u7ebf\u662f\u5047\u60f3\u7684\uff0c\u5b9e\u9645\u5e76\u4e0d\u5b58\u5728\uff09
6\u3001\u5149\u7684\u53cd\u5c04
\u5149\u4ece\u4e00\u79cd\u4ecb\u8d28\u5c04\u5411\u53e6\u4e00\u79cd\u4ecb\u8d28\u7684\u4ea4\u754c\u9762\u65f6\uff0c\u4e00\u90e8\u5206\u5149\u8fd4\u56de\u539f\u6765\u4ecb\u8d28\u4e2d\uff0c\u4f7f\u5149\u7684\u4f20\u64ad\u65b9\u5411\u53d1\u751f\u4e86\u6539\u53d8\uff0c\u8fd9\u79cd\u73b0\u8c61\u79f0\u4e3a\u5149\u7684\u53cd\u5c04
7\u3001\u5149\u7684\u53cd\u5c04\u5b9a\u5f8b
\u53cd\u5c04\u5149\u7ebf\u4e0e\u5165\u5c04\u5149\u7ebf\u3001\u6cd5\u7ebf\u5728\u540c\u4e00\u5e73\u9762\u4e0a\uff1b\u53cd\u5c04\u5149\u7ebf\u548c\u5165\u5c04\u5149\u7ebf\u5206\u5c45\u5728\u6cd5\u7ebf\u7684\u4e24\u4fa7\uff1b\u53cd\u5c04\u89d2\u7b49\u4e8e\u5165\u5c04\u89d2
\u53ef\u5f52\u7eb3\u4e3a\uff1a\u201c\u4e09\u7ebf\u4e00\u9762\uff0c\u4e24\u7ebf\u5206\u5c45\uff0c\u4e24\u89d2\u76f8\u7b49\u201d
\u7406\u89e3\uff1a
\uff081\uff09 \u7531\u5165\u5c04\u5149\u7ebf\u51b3\u5b9a\u53cd\u5c04\u5149\u7ebf\uff0c\u53d9\u8ff0\u65f6\u8981\u201c\u53cd\u201d\u5b57\u5f53\u5934
\uff082\uff09 \u53d1\u751f\u53cd\u5c04\u7684\u6761\u4ef6\uff1a\u4e24\u79cd\u4ecb\u8d28\u7684\u4ea4\u754c\u5904\uff1b\u53d1\u751f\u5904\uff1a\u5165\u5c04\u70b9\uff1b\u7ed3\u679c\uff1a\u8fd4\u56de\u539f\u4ecb\u8d28\u4e2d
\uff083\uff09 \u53cd\u5c04\u89d2\u968f\u5165\u5c04\u89d2\u7684\u589e\u5927\u800c\u589e\u5927\uff0c\u51cf\u5c0f\u800c\u51cf\u5c0f\uff0c\u5f53\u5165\u5c04\u89d2\u4e3a\u96f6\u65f6\uff0c\u53cd\u5c04\u89d2\u4e5f\u53d8\u4e3a\u96f6\u5ea6
8\u3001\u4e24\u79cd\u53cd\u5c04\u73b0\u8c61
\uff081\uff09 \u955c\u9762\u53cd\u5c04\uff1a\u5e73\u884c\u5149\u7ebf\u7ecf\u754c\u9762\u53cd\u5c04\u540e\u6cbf\u67d0\u4e00\u65b9\u5411\u5e73\u884c\u5c04\u51fa\uff0c\u53ea\u80fd\u5728\u67d0\u4e00\u65b9\u5411\u63a5\u6536\u5230\u53cd\u5c04\u5149\u7ebf
\uff082\uff09 \u6f2b\u53cd\u5c04\uff1a\u5e73\u884c\u5149\u7ecf\u754c\u9762\u53cd\u5c04\u540e\u5411\u5404\u4e2a\u4e0d\u540c\u7684\u65b9\u5411\u53cd\u5c04\u51fa\u53bb\uff0c\u5373\u5728\u5404\u4e2a\u4e0d\u540c\u7684\u65b9\u5411\u90fd\u80fd\u63a5\u6536\u5230\u53cd\u5c04\u5149\u7ebf
\u6ce8\u610f\uff1a\u65e0\u8bba\u662f\u955c\u9762\u53cd\u5c04\uff0c\u8fd8\u662f\u6f2b\u53cd\u5c04\u90fd\u9075\u5faa\u5149\u7684\u53cd\u5c04\u5b9a\u5f8b
9\u3001\u5728\u5149\u7684\u53cd\u5c04\u4e2d\u5149\u8def\u53ef\u9006
10\u3001\u5e73\u9762\u955c\u5bf9\u5149\u7684\u4f5c\u7528
\uff081\uff09\u6210\u50cf \uff082\uff09\u6539\u53d8\u5149\u7684\u4f20\u64ad\u65b9\u5411
11\u3001\u5e73\u9762\u955c\u6210\u50cf\u7684\u7279\u70b9
\uff081\uff09\u6210\u7684\u50cf\u662f\u6b63\u7acb\u7684\u865a\u50cf \uff082\uff09\u50cf\u548c\u7269\u7684\u5927\u5c0f \uff083\uff09\u50cf\u548c\u7269\u7684\u8fde\u7ebf\u4e0e\u955c\u9762\u5782\u76f4\uff0c\u50cf\u548c\u7269\u5230\u955c\u7684\u8ddd\u79bb\u76f8\u7b49
\u7406\u89e3\uff1a\u5e73\u9762\u955c\u6240\u6210\u7684\u50cf\u4e0e\u7269\u662f\u4ee5\u955c\u9762\u4e3a\u8f74\u7684\u5bf9\u79f0\u56fe\u5f62
12\u3001\u5b9e\u50cf\u4e0e\u865a\u50cf\u7684\u533a\u522b
\u5b9e\u50cf\u662f\u5b9e\u9645\u5149\u7ebf\u4f1a\u805a\u800c\u6210\u7684\uff0c\u53ef\u4ee5\u7528\u5c4f\u63a5\u5230\uff0c\u5f53\u7136\u4e5f\u80fd\u7528\u773c\u770b\u5230\u3002\u865a\u50cf\u4e0d\u662f\u7531\u5b9e\u9645\u5149\u7ebf\u4f1a\u805a\u6210\u7684\uff0c\u800c\u662f\u5b9e\u9645\u5149\u7ebf\u53cd\u5411\u5ef6\u957f\u7ebf\u76f8\u4ea4\u800c\u6210\u7684\uff0c\u53ea\u80fd\u7528\u773c\u770b\u5230\uff0c\u4e0d\u80fd\u7528\u5c4f\u63a5\u6536\u3002
13\u3001\u5e73\u9762\u955c\u7684\u5e94\u7528
\uff081\uff09\u6c34\u4e2d\u7684\u5012\u5f71 \uff082\uff09\u5e73\u9762\u955c\u6210\u50cf \uff083\uff09\u6f5c\u671b\u955c
\u516d\u3001\u5149\u7684\u6298\u5c04
1\u3001\u5149\u7684\u6298\u5c04
\u5149\u4ece\u4e00\u79cd\u4ecb\u8d28\u659c\u5c04\u5165\u53e6\u4e00\u79cd\u4ecb\u8d28\u65f6\uff0c\u4f20\u64ad\u65b9\u5411\u4e00\u822c\u4f1a\u53d1\u751f\u53d8\u5316\uff0c\u8fd9\u79cd\u73b0\u8c61\u53eb\u5149\u7684\u6298\u5c04
\u7406\u89e3\uff1a\u5149\u7684\u6298\u5c04\u4e0e\u5149\u7684\u53cd\u5c04\u4e00\u6837\u90fd\u662f\u53d1\u751f\u5728\u4e24\u79cd\u4ecb\u8d28\u7684\u4ea4\u754c\u5904\uff0c\u53ea\u662f\u53cd\u5c04\u5149\u8fd4\u56de\u539f\u4ecb\u8d28\u4e2d\uff0c\u800c\u6298\u5c04\u5149\u5219\u8fdb\u5165\u5230\u53e6\u4e00\u79cd\u4ecb\u8d28\u4e2d\uff0c\u7531\u4e8e\u5149\u5728\u5728\u4e24\u79cd\u4e0d\u540c\u7684\u7269\u8d28\u91cc\u4f20\u64ad\u901f\u5ea6\u4e0d\u540c\uff0c\u6545\u5728\u4e24\u79cd\u4ecb\u8d28\u7684\u4ea4\u754c\u5904\u4f20\u64ad\u65b9\u5411\u53d1\u751f\u53d8\u5316\uff0c\u8fd9\u5c31\u662f\u5149\u7684\u6298\u5c04\u3002
\u6ce8\u610f\uff1a\u5728\u4e24\u79cd\u4ecb\u8d28\u7684\u4ea4\u754c\u5904\uff0c\u65e2\u53d1\u751f\u6298\u5c04\uff0c\u540c\u65f6\u4e5f\u53d1\u751f\u53cd\u5c04
2\u3001\u5149\u7684\u6298\u5c04\u89c4\u5f8b
\u5149\u4ece\u7a7a\u6c14\u659c\u5c04\u5165\u6c34\u6216\u5176\u4ed6\u4ecb\u62bd\u4e2d\u65f6\uff0c\u6298\u5c04\u5149\u7ebf\u4e0e\u5165\u5c04\u5149\u7ebf\u3001\u6cd5\u7ebf\u5728\u540c\u4e00\u5e73\u9762\u4e0a\uff0c\u6298\u5c04\u5149\u7ebf\u548c\u5165\u5c04\u5149\u7ebf\u5206\u5c45\u6cd5\u7ebf\u4e24\u4fa7\uff1b\u6298\u5c04\u89d2\u5c0f\u4e8e\u5165\u5c04\u89d2\uff1b\u5165\u5c04\u89d2\u589e\u5927\u65f6\uff0c\u6298\u5c04\u89d2\u4e5f\u968f\u7740\u589e\u5927\uff1b\u5f53\u5149\u7ebf\u5782\u76f4\u5c04\u5411\u4ecb\u8d28\u8868\u9762\u65f6\uff0c\u4f20\u64ad\u65b9\u5411\u4e0d\u53d8\uff0c\u5728\u6298\u5c04\u4e2d\u5149\u8def\u53ef\u9006\u3002
\u7406\u89e3\uff1a\u6298\u5c04\u89c4\u5f8b\u5206\u4e09\u70b9\uff1a\uff081\uff09\u4e09\u7ebf\u4e00\u9762 \uff082\uff09\u4e24\u7ebf\u5206\u5c45\uff083\uff09\u4e24\u89d2\u5173\u7cfb\u5206\u4e09\u79cd\u60c5\u51b5\uff1a\u2460\u5165\u5c04\u5149\u7ebf\u5782\u76f4\u754c\u9762\u5165\u5c04\u65f6\uff0c\u6298\u5c04\u89d2\u7b49\u4e8e\u5165\u5c04\u89d2\u7b49\u4e8e0\u00b0\uff1b\u2461\u5149\u4ece\u7a7a\u6c14\u659c\u5c04\u5165\u6c34\u7b49\u4ecb\u8d28\u4e2d\u65f6\uff0c\u6298\u5c04\u89d2\u5c0f\u4e8e\u5165\u5c04\u89d2\uff1b\u2462\u5149\u4ece\u6c34\u7b49\u4ecb\u8d28\u659c\u5c04\u5165\u7a7a\u6c14\u4e2d\u65f6\uff0c\u6298\u5c04\u89d2\u5927\u4e8e\u5165\u5c04\u89d2
3\u3001\u5728\u5149\u7684\u6298\u5c04\u4e2d\u5149\u8def\u662f\u53ef\u9006\u7684
4\u3001\u900f\u955c\u53ca\u5206\u7c7b
\u900f\u955c\uff1a\u900f\u660e\u7269\u8d28\u5236\u6210\uff08\u4e00\u822c\u662f\u73bb\u7483\uff09\uff0c\u81f3\u5c11\u6709\u4e00\u4e2a\u8868\u9762\u662f\u7403\u9762\u7684\u4e00\u90e8\u5206\uff0c\u4e14\u900f\u955c\u539a\u5ea6\u8fdc\u6bd4\u5176\u7403\u9762\u534a\u5f84\u5c0f\u7684\u591a\u3002
\u5206\u7c7b\uff1a\u51f8\u900f\u955c\uff1a\u8fb9\u7f18\u8584\uff0c\u4e2d\u592e\u539a
\u51f9\u900f\u955c\uff1a\u8fb9\u7f18\u539a\uff0c\u4e2d\u592e\u8584
5\u3001\u4e3b\u5149\u8f74\uff0c\u5149\u5fc3\u3001\u7126\u70b9\u3001\u7126\u8ddd
\u4e3b\u5149\u8f74\uff1a\u901a\u8fc7\u4e24\u4e2a\u7403\u5fc3\u7684\u76f4\u7ebf
\u5149\u5fc3\uff1a\u4e3b\u5149\u8f74\u4e0a\u6709\u4e2a\u7279\u6b8a\u7684\u70b9\uff0c\u901a\u8fc7\u5b83\u7684\u5149\u7ebf\u4f20\u64ad\u65b9\u5411\u4e0d\u53d8\u3002\uff08\u900f\u955c\u4e2d\u5fc3\u53ef\u8ba4\u4e3a\u662f\u5149\u5fc3\uff09
\u7126\u70b9\uff1a\u51f8\u900f\u955c\u80fd\u4f7f\u8ddf\u4e3b\u8f74\u5e73\u884c\u7684\u5149\u7ebf\u4f1a\u805a\u5728\u4e3b\u5149\u8f74\u4e0a\u7684\u4e00\u70b9\uff0c\u8fd9\u70b9\u53eb\u900f\u955c\u7684\u7126\u70b9\uff0c\u7528\u201cF\u201d\u8868\u793a
\u865a\u7126\u70b9\uff1a\u8ddf\u4e3b\u5149\u8f74\u5e73\u884c\u7684\u5149\u7ebf\u7ecf\u51f9\u900f\u955c\u540e\u53d8\u5f97\u53d1\u6563\uff0c\u53d1\u6563\u5149\u7ebf\u7684\u53cd\u5411\u5ef6\u957f\u7ebf\u76f8\u4ea4\u5728\u4e3b\u5149\u8f74\u4e0a\u4e00\u70b9\uff0c\u8fd9\u4e00\u70b9\u4e0d\u662f\u5b9e\u9645\u5149\u7ebf\u7684\u4f1a\u805a\u70b9\uff0c\u6240\u4ee5\u53eb\u865a\u7126\u70b9\u3002
\u7126\u8ddd\uff1a\u7126\u70b9\u5230\u5149\u5fc3\u7684\u8ddd\u79bb\u53eb\u7126\u8ddd\uff0c\u7528\u201cf\u201d\u8868\u793a\u3002
\u6bcf\u4e2a\u900f\u955c\u90fd\u6709\u4e24\u4e2a\u7126\u70b9\u3001\u7126\u8ddd\u548c\u4e00\u4e2a\u5149\u5fc3\u3002\u5982\u56fe
6\u3001\u900f\u955c\u5bf9\u5149\u7684\u4f5c\u7528
\u51f8\u900f\u955c\uff1a\u5bf9\u5149\u8d77\u4f1a\u805a\u4f5c\u7528\uff08\u5982\u56fe\uff09
\u51f9\u900f\u955c\uff1a\u5bf9\u5149\u8d77\u53d1\u6563\u4f5c\u7528\uff08\u5982\u56fe\uff09
7\u3001\u51f8\u900f\u955c\u6210\u50cf\u89c4\u5f8b
\u7269 \u8ddd
\uff08u\uff09 \u6210\u50cf
\u5927\u5c0f \u50cf\u7684
\u865a\u5b9e \u50cf\u7269\u4f4d\u7f6e \u50cf \u8ddd
( v ) \u5e94 \u7528
u > 2f \u7f29\u5c0f \u5b9e\u50cf \u900f\u955c\u4e24\u4fa7 f < v <2f \u7167\u76f8\u673a
u = 2f \u7b49\u5927 \u5b9e\u50cf \u900f\u955c\u4e24\u4fa7 v = 2f
f 2f \u5e7b\u706f\u673a
u = f \u4e0d \u6210 \u50cf
u u \u653e\u5927\u955c
\u51f8\u900f\u955c\u6210\u50cf\u89c4\u5f8b\u53e3\u51b3\u8bb0\u5fc6\u6cd5
\u53e3\u51b3\u4e00\uff1a
\u201c\u4e00\u7126\u5206\u865a\u5b9e\uff0c\u4e8c\u7126\u5206\u5927\u5c0f\uff1b\u865a\u50cf\u540c\u4fa7\u6b63\uff1b\u5b9e\u50cf\u5f02\u4fa7\u5012\uff0c\u7269\u8fd0\u50cf\u53d8\u5c0f\u201d
\u53e3\u51b3\u4e8c\uff1a
\u4e09\u7269\u8ddd\u3001\u4e09\u754c\u9650\uff0c\u6210\u50cf\u968f\u7740\u7269\u8ddd\u53d8\uff1b
\u7269\u8fdc\u5b9e\u50cf\u5c0f\u800c\u8fd1\uff0c\u7269\u8fd1\u5b9e\u50cf\u5927\u800c\u8fdc\u3002
\u5982\u679c\u7269\u653e\u7126\u70b9\u5185\uff0c\u6b63\u7acb\u653e\u5927\u865a\u50cf\u73b0\uff1b
\u5e7b\u706f\u653e\u50cf\u50cf\u597d\u5927\uff0c\u7269\u5904\u4e00\u7126\u4e8c\u7126\u95f4\uff1b
\u76f8\u673a\u7f29\u4f60\u5c0f\u4e0d\u70b9\uff0c\u7269\u5904\u4e8c\u500d\u7126\u8ddd\u8fdc\u3002
\u53e3\u51b3\u4e09\uff1a
\u51f8\u900f\u955c\uff0c\u672c\u9886\u5927\uff0c\u7167\u76f8\u3001\u5e7b\u706f\u548c\u653e\u5927\uff1b
\u4e8c\u500d\u7126\u5916\u5012\u5b9e\u5c0f\uff0c\u4e8c\u500d\u7126\u5185\u5012\u5b9e\u5927\uff1b
\u82e5\u662f\u7269\u653e\u7126\u70b9\u5185\uff0c\u50cf\u7269\u540c\u4fa7\u865a\u50cf\u5927\uff1b
\u4e00\u6761\u89c4\u5f8b\u8bb0\u5728\u5fc3\uff0c\u7269\u8fd1\u50cf\u8fdc\u50cf\u53d8\u5927\u3002
8\u3001\u4e3a\u4e86\u4f7f\u5e55\u4e0a\u7684\u50cf\u201c\u6b63\u7acb\u201d\uff08\u671d\u4e0a\uff09\uff0c\u5e7b\u706f\u7247\u8981\u5012\u7740\u63d2\u3002
9\u3001\u7167\u76f8\u673a\u7684\u955c\u5934\u76f8\u5f53\u4e8e\u4e00\u4e2a\u51f8\u900f\u955c\uff0c\u6697\u7bb1\u4e2d\u7684\u80f6\u7247\u76f8\u5f53\u4e8e\u5149\u5c4f\uff0c\u6211\u4eec\u8c03\u8282\u8c03\u7126\u73af\uff0c\u5e76\u975e\u8c03\u7126\u8ddd\uff0c\u800c\u662f\u8c03\u955c\u5934\u5230\u80f6\u7247\u7684\u8ddd\u79bb\uff0c\u7269\u79bb\u955c\u5934\u8d8a\u8fdc\uff0c\u80f6\u7247\u5c31\u5e94\u9760\u8fd1\u955c\u5934\u3002
\u4e03\u3001\u8d28\u91cf\u548c\u5bc6\u5ea6
1\u3001\u8d28\u91cf
\uff081\uff09 \u5b9a\u4e49\uff1a\u7269\u4f53\u4e2d\u542b\u6709\u7269\u8d28\u7684\u591a\u5c11\u53eb\u8d28\u91cf\u3002\u7528\u5b57\u6bcd\u201cm\u201d\u8868\u793a\u3002
\uff082\uff09 \u8d28\u91cf\u662f\u7269\u4f53\u7684\u4e00\u79cd\u5c5e\u6027\uff1a
\u5bf9\u4e8e\u4e00\u4e2a\u7ed9\u5b9a\u7684\u7269\u4f53\uff0c\u5b83\u7684\u8d28\u91cf\u662f\u786e\u5b9a\u7684\uff0c\u5b83\u4e0d\u968f\u7269\u4f53\u7684\u5f62\u72b6\u3001\u4f4d
\u7f6e\uff0c\u72b6\u6001\u548c\u6e29\u5ea6\u7684\u6539\u53d8\u800c\u6539\u53d8\u3002
\uff083\uff09\u8d28\u91cf\u7684\u5355\u4f4d\u53ca\u6362\u7b97\uff1a
\u8d28\u91cf\u7684\u4e3b\u5355\u4f4d\u662f\u5343\u514b(kg )\u3002\u5e38\u7528\u5355\u4f4d\u6709\u5428\uff08t \uff09\u3001\u514b\uff08g\uff09\u548c\u6beb\u514b\uff08mg\uff09
1t 103 kg 103 g 103 mg
2\u3001\u8d28\u91cf\u7684\u6d4b\u91cf
\u751f\u6d3b\u4e2d\u79f0\u8d28\u91cf\u7684\u5de5\u5177\u662f\u79e4\uff0c\u5728\u7269\u7406\u5b9e\u9a8c\u5ba4\u91cc\uff0c\u7528\u5929\u5e73\u79f0\u8d28\u91cf\uff0c\u5176\u4e2d\u5305\u62ec\u6258\u76d8\u5929\u5e73\u548c\u7269\u7406\u5929\u5e73\u3002
\uff081\uff09 \u5929\u5e73\u7684\u4f7f\u7528\u65b9\u6cd5\uff1a
\u2460 \u628a\u5929\u5e73\u653e\u5728\u6c34\u5e73\u53f0\u4e0a\uff0c\u5c06\u6e38\u7801\u653e\u5728\u6807\u5c3a\u5de6\u7aef\u7684\u96f6\u523b\u7ebf\u5904
\u2461 \u8c03\u8282\u6a2a\u6881\u53f3\u7aef\u7684\u5e73\u8861\u87ba\u6bcd\uff0c\u4f7f\u6307\u9488\u6307\u5728\u5206\u5ea6\u76d8\u7684\u4e2d\u7ebf\u5904\uff0c\u8fd9\u65f6\u6a2a\u6881\u5e73\u8861
\u2462 \u4f30\u8ba1\u88ab\u6d4b\u7269\u7684\u8d28\u91cf\uff0c\u628a\u88ab\u6d4b\u7269\u653e\u5728\u5de6\u76d8\u91cc\uff0c\u7528\u954a\u5b50\u5411\u53f3\u76d8\u91cc\u52a0\u51cf\u781d\u7801\u5e76\u8c03\u8282\u6e38\u7801\u5728\u6807\u5c3a\u4e0a\u7684\u4f4d\u7f6e\uff0c\u76f4\u5230\u6a2a\u6881\u6062\u590d\u5e73\u8861\u3002
\uff082\uff09\u4f7f\u7528\u5929\u5e73\u7684\u6ce8\u610f\u4e8b\u9879\uff1a
\u2460\u5929\u5e73\u8c03\u597d\u540e\uff0c\u5de6\u53f3\u4e24\u6258\u76d8\u4e0d\u80fd\u4e92\u6362\uff0c\u5426\u5219\u8981\u91cd\u65b0\u8c03\u8282\u6a2a\u6881\u5e73\u8861
\u2461\u88ab\u6d4b\u7269\u4f53\u7684\u8d28\u91cf\u4e0d\u80fd\u8d85\u8fc7\u6700\u5927\u79e4\u91cf
\u2462\u781d\u7801\u8981\u8f7b\u62ff\u8f7b\u653e\uff0c\u4e0d\u80fd\u7528\u624b\u62ff\uff0c\u8981\u7528\u954a\u5b50\uff0c\u4ee5\u514d\u56e0\u4e3a\u624b\u4e0a\u7684\u6c57\u800c\u8150\u8680\u781d\u7801
\u2463 \u4fdd\u6301\u5929\u5e73\u76d8\u5e72\u71e5\u3001\u6e05\u6d01\u3002\u4e0d\u8981\u76f4\u63a5\u653e\u6f6e\u6e7f\u6216\u6709\u8150\u8680\u6027\u7684\u7269\u4f53\u3002
\uff083\uff09 \u5929\u5e73\u7684\u79f0\u91cf\u548c\u611f\u91cf\uff1a
\u6bcf\u53f0\u5929\u5e73\u80fd\u591f\u79f0\u7684\u6700\u5927\u8d28\u91cf\u53eb\u5929\u5e73\u7684\u6700\u5927\u79f0\u91cf\uff0c\u4e5f\u53eb\u79e4\u91cf\u3002
\u611f\u91cf\u8868\u793a\u5929\u5e73\u6240\u80fd\u6d4b\u91cf\u7684\u6700\u5c0f\u8d28\u91cf\u6570\uff0c\u5c31\u662f\u6807\u5c3a\u4e0a\u6700\u5c0f\u523b\u5ea6\u6240\u4ee3\u8868\u7684\u8d28\u91cf\u6570\u3002
3\u3001\u5bc6\u5ea6
\u5bc6\u5ea6\u662f\u7269\u8d28\u7684\u4e00\u79cd\u7279\u6027\u3002
\uff081\uff09\u5b9a\u4e49\uff1a\u5355\u4f4d\u4f53\u79ef\u7684\u67d0\u79cd\u7269\u8d28\u7684\u8d28\u91cf\uff0c\u53eb\u5bc6\u5ea6\u3002\u7528\u5b57\u6bcd\u201c\u03c1\u201d\u8868\u793a\u3002
\uff082\uff09\u5bc6\u5ea6\u7684\u8ba1\u7b97\u516c\u5f0f\uff1a
\uff083\uff09\u5355\u4f4d\uff1a\u56fd\u9645\u5355\u4f4d\u662fkg/m3\uff0c\u5b9e\u9a8c\u4e2d\u5e38\u7528\u5355\u4f4d\u662fg/cm3\uff0c1g/cm3=103kg/m3
\u516b\u3001\u529b
1\u3001\u529b\u7684\u5b9a\u4e49
\uff081\uff09 \u5b9a\u4e49\uff1a\u529b\u662f\u7269\u4f53\u5bf9\u7269\u4f53\u7684\u4f5c\u7528
\uff082\uff09 \u8bf4\u660e\uff1a\u5b9a\u4e49\u4e2d\u7684\u201c\u4f5c\u7528\u201d\u662f\u63a8\u3001\u62c9\u3001\u63d0\u3001\u540a\u3001\u538b\u7b49\u5177\u4f53\u52a8\u4f5c\u7684\u62bd\u8c61\u6982\u62ec
2\u3001\u529b\u7684\u6982\u5ff5\u7684\u7406\u89e3
\uff081\uff09 \u53d1\u751f\u529b\u65f6\uff0c\u4e00\u5b9a\u6709\u4e24\u4e2a\uff08\u6216\u4e24\u4e2a\u4ee5\u4e0a\uff09\u7684\u7269\u4f53\u5b58\u5728\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u6ca1\u6709\u7269\u4f53\u5c31\u4e0d\u4f1a\u6709\u529b\u7684\u4f5c\u7528
\uff082\uff09 \u5f53\u4e00\u4e2a\u7269\u4f53\u53d7\u5230\u529b\u7684\u4f5c\u7528\u65f6\uff0c\u4e00\u5b9a\u6709\u53e6\u4e00\u4e2a\u7269\u4f53\u5bf9\u5b83\u65bd\u52a0\u4e86\u529b\uff0c\u53d7\u529b\u7684\u7269\u4f53\u53eb\u53d7\u529b\u7269\u4f53\uff0c\u65bd\u529b\u7684\u7269\u4f53\u53eb\u65bd\u529b\u7269\u4f53\u3002\u6240\u4ee5\u6ca1\u6709\u65bd\u529b\u7269\u4f53\u6216\u6ca1\u6709\u53d7\u529b\u7269\u4f53\u7684\u529b\u662f\u4e0d\u5b58\u5728\u7684\u3002
\uff083\uff09 \u76f8\u4e92\u63a5\u89e6\u7684\u7269\u4f53\u95f4\u4e0d\u4e00\u5b9a\u53d1\u751f\u529b\u7684\u4f5c\u7528\uff0c\u6ca1\u6709\u63a5\u89e6\u7684\u7269\u4f53\u4e4b\u95f4\u4e5f\u4e0d\u4e00\u5b9a\u6ca1\u6709\u529b\u201c\u63a5\u89e6\u4e0e\u5426\u201d\u4e0d\u80fd\u6210\u4e3a\u5224\u65ad\u662f\u5426\u53d1\u751f\u529b\u7684\u4f9d\u636e\u3002
\uff084\uff09 \u7269\u4f53\u95f4\u529b\u7684\u4f5c\u7528\u662f\u76f8\u4e92\u7684\u3002
\u2460 \u65bd\u529b\u7269\u4f53\u548c\u53d7\u529b\u7269\u4f53\u7684\u4f5c\u7528\u662f\u76f8\u4e92\u7684\uff0c\u8fd9\u4e00\u5bf9\u529b\u603b\u662f\u540c\u65f6\u4ea7\u751f\uff0c\u540c\u65f6\u6d88\u5931\u3002
\u2461 \u65bd\u529b\u7269\u4f53\u3001\u53d7\u529b\u7269\u4f53\u662f\u76f8\u5bf9\u7684\uff0c\u5f53\u7814\u7a76\u5bf9\u8c61\u6539\u53d8\u65f6\uff0c\u65bd\u529b\u7269\u4f53\u548c\u53d7\u529b\u7269\u4f53\u4e5f\u5c31\u6539\u53d8\u4e86
3\u3001\u529b\u7684\u4f5c\u7528\u6548\u679c\u2014\u2014\u7531\u6b64\u53ef\u5224\u5b9a\u662f\u5426\u6709\u529b\u5b58\u5728
\uff081\uff09 \u53ef\u4f7f\u7269\u4f53\u7684\u8fd0\u52a8\u72b6\u6001\u53d1\u751f\u6539\u53d8\u3002\u8fd0\u52a8\u72b6\u6001\u7684\u6539\u53d8\u5305\u62ec\u8fd0\u52a8\u5feb\u6162\u6539\u53d8\u548c\u8fd0\u52a8\u7684\u65b9\u5411\u6539\u53d8\u3002
\uff082\uff09 \u53ef\u4f7f\u7269\u4f53\u7684\u5f62\u72b6\u4e0e\u5927\u5c0f\u53d1\u751f\u6539\u53d8\u3002
4\u3001\u529b\u7684\u5355\u4f4d
\u56fd\u9645\u5355\u4f4d\u5236\u4e2d\uff0c\u529b\u7684\u5355\u4f4d\u662f\u725b\u987f\uff0c\u7b80\u79f0\u725b\uff0c\u7528\u7b26\u53f7N\u6765\u8868\u793a\u30021N\u5927\u5c0f\u76f8\u5f53\u4e8e\u62ff\u8d772\u4e2a\u9e21\u86cb\u7684\u529b\u3002
5\u3001\u529b\u7684\u6d4b\u91cf
\uff081\uff09 \u5de5\u5177\uff1a\u6d4b\u529b\u8ba1\uff0c\u5b9e\u9a8c\u5ba4\u4e2d\u5e38\u7528\u7684\u6d4b\u529b\u8ba1\u662f\u5f39\u7c27\u79e4
\uff082\uff09 \u5f39\u7c27\u79e4\u7684\u539f\u7406\uff1a\u5f39\u7c27\u53d7\u5230\u7684\u62c9\u529b\u8d8a\u5927\uff0c\u5f39\u7c27\u4f38\u957f\u5c31\u8d8a\u957f
6\u3001\u5f39\u7c27\u79e4\u7684\u6b63\u786e\u4f7f\u7528
\uff081\uff09 \u89c2\u5bdf\u5f39\u7c27\u79e4\u7684\u91cf\u7a0b\u3001\u5206\u5ea6\u503c\u548c\u6307\u9488\u662f\u5426\u6307\u5728\u96f6\u523b\u7ebf\u4e0a
\uff082\uff09 \u8bfb\u6570\u65f6\uff0c\u89c6\u7ebf\u3001\u6307\u9488\u548c\u523b\u5ea6\u7ebf\u5e94\u5728\u540c\u4e00\u6c34\u5e73\u9762
7\u3001\u529b\u7684\u4e09\u8981\u7d20
\u529b\u7684\u5927\u5c0f\u3001\u65b9\u5411\u3001\u4f5c\u7528\u70b9\u53eb\u529b\u7684\u4e09\u8981\u7d20\uff0c\u90fd\u80fd\u5f71\u54cd\u529b\u7684\u4f5c\u7528\u6548\u679c
8\u3001\u529b\u7684\u56fe\u793a\uff1a\u7528\u4e00\u6839\u5e26\u7bad\u5934\u7684\u7ebf\u6bb5\u628a\u529b\u7684\u4e09\u8981\u7d20\u8868\u793a\u51fa\u6765
9\u3001\u529b\u7684\u56fe\u793a\u7684\u505a\u56fe\u65b9\u6cd5
\uff081\uff09 \u753b\u51fa\u53d7\u529b\u7269\u4f53\uff1a\u4e00\u822c\u53ef\u4ee5\u7528\u4e00\u4e2a\u6b63\u65b9\u5f62\u6216\u957f\u65b9\u5f62\u4ee3\u8868\uff0c\u7403\u5f62\u53ef\u7528\u5706\u5708\u8868\u793a\u3002
\uff082\uff09 \u786e\u5b9a\u4f5c\u7528\u70b9\uff1a\u4f5c\u7528\u70b9\u753b\u5728\u53d7\u529b\u7269\u4f53\u4e0a\uff0c\u4e14\u753b\u5728\u53d7\u529b\u7269\u4f53\u548c\u65bd\u529b\u7269\u4f53\u7684\u63a5\u89e6\u9762\u7684\u4e2d\u70b9\uff0c\u5982\u53d7\u529b\u7269\u4f53\u548c\u65bd\u529b\u7269\u4f53\u4e0d\u63a5\u89e6\u6216\u540c\u4e00\u7269\u4f53\u4e0a\u53d7\u4e8c\u4e2a\u4ee5\u4e0a\u7684\u529b\uff0c\u4f5c\u7528\u70b9\u753b\u5728\u53d7\u529b\u7269\u4f53\u7684\u51e0\u4f55\u4e2d\u5fc3\u3002
\uff083\uff09 \u786e\u5b9a\u6807\u5ea6\uff1a\u5982\u75281\u5398\u7c73\u7ebf\u6bb5\u957f\u4ee3\u8868\u591a\u5c11\u725b\u987f\u3002
\uff084\uff09 \u753b\u7ebf\u6bb5\uff1a\u4ece\u529b\u7684\u4f5c\u7528\u70b9\u8d77\uff0c\u6309\u6240\u5b9a\u6807\u5ea6\u6cbf\u529b\u7684\u65b9\u5411\u753b\u4e00\u6761\u76f4\u7ebf\uff0c\u7528\u6765\u8868\u793a\u529b\u7684\u5927\u5c0f
\uff085\uff09 \u529b\u7684\u65b9\u5411\uff1a\u5728\u7ebf\u6bb5\u7684\u672b\u5c3e\u753b\u4e0a\u7bad\u5934\uff0c\u8868\u793a\u529b\u7684\u65b9\u5411
\uff086\uff09 \u5c06\u6240\u56fe\u793a\u7684\u529b\u7684\u7b26\u53f7\u548c\u6570\u503c\u6807\u5728\u7bad\u5934\u7684\u9644\u8fd1
10\u3001\u529b\u7684\u793a\u610f\u56fe
\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u53ea\u9700\u8981\u5b9a\u6027\u5730\u63cf\u8ff0\u7269\u4f53\u7684\u53d7\u529b\u60c5\u51b5\uff0c\u4e0d\u9700\u8981\u7cbe\u786e\u5730\u8868\u793a\u51fa\u529b\u7684\u5927\u5c0f\uff0c\u5219\u53ef\u4ee5\u753b\u529b\u7684\u793a\u610f\u56fe\u3002
11\u3001\u91cd\u529b\u7684\u6982\u5ff5
\uff081\uff09 \u5b9a\u4e49\uff1a\u5730\u9762\u9644\u8fd1\u7269\u4f53\u7531\u4e8e\u5730\u7403\u5438\u5f15\u800c\u53d7\u5230\u7684\u529b\u53eb\u91cd\u529b
\uff082\uff09 \u7406\u89e3\uff1a\u2460\u91cd\u529b\u7684\u65bd\u529b\u7269\u4f53\u662f\u5730\u7403\uff0c\u5b83\u7684\u53d7\u529b\u7269\u4f53\u662f\u5730\u9762\u9644\u8fd1\u7684\u4e00\u5207\u7269\u4f53\u3002\u2461\u91cd\u529b\u7684\u5927\u5c0f\u4e0e\u7269\u4f53\u7684\u8d28\u91cf\u6709\u5173\u3002
12\u3001\u91cd\u529b\u7684\u4e09\u8981\u7d20
\uff081\uff09 \u5927\u5c0f\uff1aG = mg
\uff082\uff09 \u65b9\u5411\uff1a\u603b\u662f\u7ad6\u76f4\u5411\u4e0b\uff08\u5782\u76f4\u6c34\u5e73\u9762\u5411\u4e0b\uff09
\uff083\uff09 \u4f5c\u7528\u70b9\uff1a\u91cd\u529b\u7684\u4f5c\u7528\u70b9\u5728\u7269\u4f53\u7684\u91cd\u5fc3\u4e0a\u3002\u5176\u4e2d\u5f62\u72b6\u89c4\u5219\uff0c\u8d28\u91cf\u5206\u5e03\u5747\u5300\u7269\u4f53\u7684\u91cd\u5fc3\u5728\u5b83\u7684\u51e0\u4f55\u4e2d\u5fc3
13\u3001\u5408\u529b\u7684\u6982\u5ff5
\uff081\uff09 \u5408\u529b\uff1a\u5982\u679c\u4e00\u4e2a\u529b\u4ea7\u751f\u7684\u6548\u679c\u8ddf\u4e24\u4e2a\u529b\u5171\u540c\u4f5c\u7528\u4ea7\u751f\u7684\u6548\u679c\u76f8\u540c\uff0c\u8fd9\u4e2a\u529b\u5c31\u53eb\u505a\u90a3\u4e24\u4e2a\u529b\u7684\u5408\u529b
\uff082\uff09 \u7406\u89e3\uff1a\u2460\u5408\u529b\u7684\u6982\u5ff5\u662f\u5efa\u7acb\u5728\u201c\u7b49\u6548\u201d\u7684\u57fa\u7840\u4e0a\uff0c\u4e5f\u5c31\u662f\u5408\u529b\u201c\u53d6\u4ee3\u4e86\u5206\u529b\uff0c\u56e0\u6b64\u5408\u529b\u4e0d\u662f\u4f5c\u7528\u5728\u7269\u4f53\u4e0a\u7684\u53e6\u5916\u4e00\u4e2a\u529b\uff0c\u5b83\u53ea\u4e0d\u8fc7\u662f\u66ff\u4e86\u539f\u6765\u4f5c\u7528\u7684\u4e24\u4e2a\u529b\uff0c\u4e0d\u8981\u8bef\u8ba4\u4e3a\u7269\u4f53\u540c\u65f6\u8fd8\u53d7\u5230\u5408\u529b\u7684\u4f5c\u7528\u3002\u2461\u4e24\u4e2a\u529b\u5408\u6210\u7684\u6761\u4ef6\u662f\u8fd9\u4e24\u4e2a\u529b\u987b\u540c\u65f6\u4f5c\u7528\u5728\u4e00\u4e2a\u7269\u4f53\u4e0a\uff0c\u5426\u5219\u6c42\u5408\u529b\u65e0\u610f\u4e49\u3002
14\u3001\u529b\u7684\u5408\u6210
\u5df2\u77e5\u51e0\u4e2a\u529b\u7684\u5927\u5c0f\u548c\u65b9\u5411\uff0c\u6c42\u5408\u529b\u7684\u5927\u5c0f\u548c\u65b9\u5411\u53eb\u505a\u529b\u7684\u5408\u6210
\uff081\uff09\u5f53\u4e24\u4e2a\u529b\u65b9\u5411\u76f8\u540c\u662f\u65f6\uff0c\u5176\u5408\u529b\u7684\u5927\u5c0f\u7b49\u4e8e\u8fd9\u4e24\u4e2a\u529b\u4e4b\u548c\uff1b\u65b9\u5411\u4e0e\u4e24\u529b\u7684\u65b9\u5411\u76f8\u540c
\u6570\u5b66\u8868\u8ff0\uff1aF\u5408 =F1 + F2
\uff082\uff09\u5f53\u4e24\u4e0b\u529b\u65b9\u5411\u76f8\u53cd\u65f6\uff0c\u5176\u5408\u529b\u7684\u5927\u5c0f\u7b49\u4e8e\u8fd9\u4e24\u4e2a\u529b\u4e4b\u5dee\uff0c\u65b9\u5411\u4e3a\u8f83\u5927\u529b\u7684\u65b9\u5411
\u6570\u5b66\u8868\u8ff0\uff1aF\u5408 = F1 \u2014 F2 \uff08\u5176\u4e2d\uff1aF1 > F2 \uff09
2在探究物体沉浮的实验中，把些碎石放入小瓶里，拧紧瓶盖，用弹簧测力计测出重力为6.7N，浸没水中后，示数变为3.9N，小瓶所受浮力【2.8】N，若要让小瓶悬浮水中，必须从瓶中取出【3.9】N的石块
3，质量200克的实心铁球，放入有适量水银的容器中，代小球静止时，小球受到浮力为【2】N，如把小球放入有适量水的容器中，则球自身重力【大于】小球受到水对他的浮力（填，大于小于等于】
4（要解答过程，及公式）一个不规则的实心物体，质量为55克，放入装满纯水的烧杯中，沉入底部，排开0.5N的水，再向烧杯中加盐在搅拌，直到物体悬浮，备注；（克取10N/千克）
1求物体在纯水中所受浮力
F浮=排开水的重力=0.5N
2物体的体积
F浮= p水gv
v=0.5/(10^3*10)=0.5*10^(-4)m^3
3物体悬浮时盐水的密度
当物体悬浮时,盐水的密度=物体的密度.
即p盐水=p物=m/v=55*10^(-3)kg/(0.5*10^(-4)m^3)=1100kg/m^3
1）10牛；下沉
2）2.8；3.9
3）2；大于
4）(1)F浮=G排＝0.5N
(2)F浮＝ρ液gv排
所以V=5×10^-5m^3
(3)m=ρV 所以ρ=1.1×10^3kg/m^3
所以ρ盐水=ρ=1.1×10^3kg/m^3
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绛旓細2銆佹澂瀵规瀛愬緱鍘嬪己=(姘磋川閲忎负0.13鍗冨厠*10+鐜荤拑鏉噸0.5N)/(搴曢潰绉槸12骞虫柟鍘樼背*10^-4)=1500N/m^2 3銆侊紙1锛夌幓鐠冩澂鐨勯噸鍔=鍘嬪己鏄200甯*搴曢潰绉槸0.01骞虫柟绫=2N 锛2锛1kg姘=10N,鍔犳澂閲嶅叡12N,瀵规瀛愮殑鍘嬪己=12/0.01=1200Pa,>900P璇存槑褰㈢姸鏄笂澶э紝涓嬪皬銆傛诲帇寮=蟻h+200=900,鎵浠=(...
绛旓細鎵浠ョ瓟妗堟槸66g/60ml=1.1g/cm 3~~~鍥犱负姘寸殑璐ㄩ噺=铻嶅寲鍐扮殑璐ㄩ噺 铻嶅寲鍐扮殑璐ㄩ噺=铻嶅寲浣撶Н*鍐扮殑瀵嗗害=0.9g/cm³*3dm^3*10³=2.7kg 鎵浠ョ瓟妗堟槸2.7kg 鎴戝啓鐨勪笉鐭ラ亾浣犺兘涓嶈兘鐪嬫噦 鎴戜篃淇濅笉鍑 绗笁棰...鎴戝ソ鍍忔病鐢ㄥ埌9kg杩欎釜鐗╃悊閲 鍘...浣犺嚜宸卞湪缁嗙悽纾ㄥ惂 ...
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