怎么用△x=aT2解决纸带问题 什么是电脑的物理地址
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\u7269\u7406\u5b66(Physics):\u7269\u7406\u73b0\u8c61\u3001\u7269\u8d28\u7ed3\u6784\u3001\u7269\u8d28\u76f8\u4e92\u4f5c\u7528\u3001\u7269\u8d28\u8fd0\u52a8\u89c4\u5f8b
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\u7a7a\u95f4\u5c3a\u5ea6:
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\u5fae\u89c2\u7c92\u5b50Microscopic
\u4ecb\u89c2\u7269\u8d28mesoscopic
\u5b8f\u89c2\u7269\u8d28macroscopic
\u5b87\u89c2\u7269\u8d28cosmological \u7c7b\u661f\u4f53 10^26m
\u65f6\u95f4\u5c3a\u5ea6:
\u57fa\u672c\u7c92\u5b50\u5bff\u547d 10s
\u5b87\u5b99\u5bff\u547d 10s
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\u6309\u901f\u7387\u5927\u5c0f\u5212\u5206: \u76f8\u5bf9\u8bba\u7269\u7406\u5b66\u3001\u975e\u76f8\u5bf9\u8bba\u7269\u7406\u5b66
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\u6309\u8fd0\u52a8\u901f\u5ea6\u5212\u5206: \u4f4e\u901f\uff0c\u4e2d\u901f\uff0c\u9ad8\u901f
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\u6269\u5c55\u8d44\u6599
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\u4ece\u8d39\u7c73\u4f3d\u739b-\u5c04\u7ebf\u671b\u8fd0\u955c\u7684\u65b0\u6570\u636e\u548c\u73b0\u6709\u5b87\u5b99\u6a21\u578b\u7684\u6539\u8fdb\uff0c\u53ef\u671f\u5f85\u51fa\u73b0\u8bb8\u591a\u53ef\u80fd\u6027\u548c\u53d1\u73b0\u3002\u5c24\u5176\u662f\u4eca\u540e\u6570\u5e74\u5185\uff0c\u56f4\u7ed5\u9ed1\u7269\u8d28\u65b9\u9762\u53ef\u80fd\u6709\u8bb8\u591a\u53d1\u73b0\u3002
\u53c2\u8003\u8d44\u6599\uff1a\u7269\u7406\u7684\u767e\u5ea6\u767e\u79d1
\u7535\u8111\u7684\u7269\u7406\u5730\u5740\u662f\u6307\u7535\u8111\u7684MAC\u5730\u5740\uff0cMAC\u5730\u5740\u7528\u4e8e\u5728\u7f51\u7edc\u4e2d\u552f\u4e00\u6807\u793a\u4e00\u4e2a\u7f51\u5361\uff0c\u4e00\u53f0\u8bbe\u5907\u82e5\u6709\u4e00\u6216\u591a\u4e2a\u7f51\u5361\uff0c\u5219\u6bcf\u4e2a\u7f51\u5361\u90fd\u9700\u8981\u5e76\u4f1a\u6709\u4e00\u4e2a\u552f\u4e00\u7684MAC\u5730\u5740\u3002
MAC\u5730\u5740\uff0c\u76f4\u8bd1\u4e3a\u5a92\u4f53\u8bbf\u95ee\u63a7\u5236\u5730\u5740\uff0c\u4e5f\u79f0\u4e3a\u5c40\u57df\u7f51\u5730\u5740\uff0c\u4ee5\u592a\u7f51\u5730\u5740\u6216\u7269\u7406\u5730\u5740\uff0c\u5b83\u662f\u4e00\u4e2a\u7528\u6765\u786e\u8ba4\u7f51\u4e0a\u8bbe\u5907\u4f4d\u7f6e\u7684\u5730\u5740\u3002\u5728OSI\u6a21\u578b\u4e2d\uff0c\u7b2c\u4e09\u5c42\u7f51\u7edc\u5c42\u8d1f\u8d23IP\u5730\u5740\uff0c\u7b2c\u4e8c\u5c42\u6570\u636e\u94fe\u63a5\u5c42\u5219\u8d1f\u8d23MAC\u5730\u5740\u3002
\u662f\u53ef\u4ee5\u518d\u63a5\u4e00\u4e2a\u8def\u7531\u5668\u7684\uff0c\u53ea\u9700\u8981\u628a\u4f60\u7684\u8def\u7531\u5668MAC\u5730\u5740\u5bfc\u5165\u5230\u623f\u4e1c\u8def\u7531\u5668MAC\u5217\u8868\u91cc\uff0c\u7136\u540e\u7528\u4e00\u6839\u7f51\u7ebf\u8fde\u63a5\u4e24\u4e2a\u8def\u7531\u5668LAN\u53e3\u5c31\u53ef\u4ee5\u5b9e\u73b0\u3002
\u6269\u5c55\u8d44\u6599\uff1a
IP\u5730\u5740\u548cMAC\u5730\u5740\u76f8\u540c\u70b9\u662f\u5b83\u4eec\u90fd\u552f\u4e00\uff0c\u4e0d\u540c\u7684\u7279\u70b9\u4e3b\u8981\u6709\uff1a
\u5bf9\u4e8e\u7f51\u7edc\u4e0a\u7684\u67d0\u4e00\u8bbe\u5907\uff0c\u5982\u4e00\u53f0\u8ba1\u7b97\u673a\u6216\u4e00\u53f0\u8def\u7531\u5668\uff0c\u5176IP\u5730\u5740\u662f\u57fa\u4e8e\u7f51\u7edc\u62d3\u6251\u8bbe\u8ba1\u51fa\u7684\uff0c\u540c\u4e00\u53f0\u8bbe\u5907\u6216\u8ba1\u7b97\u673a\u4e0a\uff0c\u6539\u52a8IP\u5730\u5740\u662f\u5f88\u5bb9\u6613\u7684\uff08\u4f46\u5fc5\u987b\u552f\u4e00\uff09\uff0c\u800cMAC\u5219\u662f\u751f\u4ea7\u5382\u5546\u70e7\u5f55\u597d\u7684\uff0c\u4e00\u822c\u4e0d\u80fd\u6539\u52a8\u3002
\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u9700\u8981\u7ed9\u4e00\u53f0\u4e3b\u673a\u6307\u5b9a\u4efb\u610f\u7684IP\u5730\u5740\uff0c\u5982\u6211\u4eec\u53ef\u4ee5\u7ed9\u5c40\u57df\u7f51\u4e0a\u7684\u67d0\u53f0\u8ba1\u7b97\u673a\u5206\u914dIP\u5730\u5740\u4e3a192.168.0.112 \uff0c\u4e5f\u53ef\u4ee5\u5c06\u5b83\u6539\u6210192.168.0.200\u3002
\u800c\u4efb\u4e00\u7f51\u7edc\u8bbe\u5907\uff08\u5982\u7f51\u5361\uff0c\u8def\u7531\u5668\uff09\u4e00\u65e6\u751f\u4ea7\u51fa\u6765\u4ee5\u540e\uff0c\u5176MAC\u5730\u5740\u4e0d\u53ef\u7531\u672c\u5730\u8fde\u63a5\u5185\u7684\u914d\u7f6e\u8fdb\u884c\u4fee\u6539\u3002\u5982\u679c\u4e00\u4e2a\u8ba1\u7b97\u673a\u7684\u7f51\u5361\u574f\u4e86\uff0c\u5728\u66f4\u6362\u7f51\u5361\u4e4b\u540e\uff0c\u8be5\u8ba1\u7b97\u673a\u7684MAC\u5730\u5740\u5c31\u53d8\u4e86\u3002
\u957f\u5ea6\u4e0d\u540c\u3002IP\u5730\u5740\u4e3a32\u4f4d\uff0cMAC\u5730\u5740\u4e3a48\u4f4d\u3002\u5206\u914d\u4f9d\u636e\u4e0d\u540c\u3002IP\u5730\u5740\u7684\u5206\u914d\u662f\u57fa\u4e8e\u7f51\u7edc\u62d3\u6251\uff0cMAC\u5730\u5740\u7684\u5206\u914d\u662f\u57fa\u4e8e\u5236\u9020\u5546\u3002
\u5bfb\u5740\u534f\u8bae\u5c42\u4e0d\u540c\u3002IP\u5730\u5740\u5e94\u7528\u4e8eOSI\u7b2c\u4e09\u5c42\uff0c\u5373\u7f51\u7edc\u5c42\uff0c\u800cMAC\u5730\u5740\u5e94\u7528\u5728OSI\u7b2c\u4e8c\u5c42\uff0c\u5373\u6570\u636e\u94fe\u8def\u5c42\u3002
\u6570\u636e\u94fe\u8def\u5c42\u534f\u8bae\u53ef\u4ee5\u4f7f\u6570\u636e\u4ece\u4e00\u4e2a\u8282\u70b9\u4f20\u9012\u5230\u76f8\u540c\u94fe\u8def\u7684\u53e6\u4e00\u4e2a\u8282\u70b9\u4e0a\uff08\u901a\u8fc7MAC\u5730\u5740\uff09\uff0c\u800c\u7f51\u7edc\u5c42\u534f\u8bae\u4f7f\u6570\u636e\u53ef\u4ee5\u4ece\u4e00\u4e2a\u7f51\u7edc\u4f20\u9012\u5230\u53e6\u4e00\u4e2a\u7f51\u7edc\u4e0a\uff08ARP\u6839\u636e\u76ee\u7684IP\u5730\u5740\uff0c\u627e\u5230\u4e2d\u95f4\u8282\u70b9\u7684MAC\u5730\u5740\uff0c\u901a\u8fc7\u4e2d\u95f4\u8282\u70b9\u4f20\u9001\uff0c\u4ece\u800c\u6700\u7ec8\u5230\u8fbe\u76ee\u7684\u7f51\u7edc\uff09\u3002
\u53c2\u8003\u8d44\u6599\u767e\u5ea6\u767e\u79d1\u2014MAC\u5730\u5740
取三个相邻点A、B、C，算出Δx=xBC-xAB，
打下相邻两点所用时间周期为T，则用△x=aT^2可以求出a
绛旓細鎵撶偣璁℃椂鍣ㄦ墍鐢ㄧ數婧愮殑棰戠巼鏄50Hz锛屾墦鐐瑰懆鏈熶负0.1s锛屾瘡娈绾稿甫鏈5涓棿闅旓紝鏁呮瘡娈电焊甯﹀搴旂殑鏃堕棿涓0.1s锛庝粠鍥句腑鍙互鐪嬪嚭鍦ㄧ浉閭荤殑鐩哥瓑鏃堕棿鍐呯殑浣嶇Щ涔嬪樊鏄竴鎭掗噺锛屽嵆鈻硏=aT2=7脳10-3m锛庢墍浠=鈻x鈻T2=7脳10?30.01m/s2=0.70m/s2锛庢晠绛旀涓猴細0.10锛0.70锛
绛旓細v1= x02 2T = 0.075 0.2 =0.375m/s 鏍规嵁鍖鍙橀熺洿绾胯繍鍔ㄤ腑鏃堕棿涓偣鐨勯熷害绛変簬璇ヨ繃绋嬩腑鐨勫钩鍧囬熷害锛屽彲浠ユ眰鍑烘墦绾稿甫涓2鐐规椂灏忚溅鐨勭灛鏃堕熷害澶у皬锛巚2= x13 2T = 0.135−0.03 0.2 =0.525m/s 鏍规嵁鍖鍙橀熺洿绾胯繍鍔ㄧ殑鎺ㄨ鍏紡鈻硏=aT2鍙互姹傚嚭鍔犻熷害鐨勫ぇ灏忥紝寰楋細x12-x01=aT2 ...
绛旓細锛1锛夋墦鐐硅鏃跺櫒搴旇涓庝氦娴佺數婧愯繛鎺ワ紟锛2锛夊凡鐭ョ浉閭昏鏁扮偣鐨勬椂闂撮棿闅斾负0.1s锛屾牴鎹腑闂存椂鍒荤殑閫熷害绛変簬骞冲潎閫熷害寰楋細vD=XCE2T=0.022+0.0280.2=0.25m/s锛涙牴鎹鎰忓彲鐭ワ紝鐩搁偦涓や釜璁℃暟鐐逛箣闂寸殑璺濈鈻硏=16.0-10.0=22.0-16.0=28.0-22.0=6mm鏍规嵁杩愬姩瀛﹀叕寮鈻硏=at2寰楋細a=0.0060.01=0.60m/...
绛旓細锛1锛夆憼姣忎袱涓鏁扮偣闂存湁鍥涗釜瀹為獙鐐规湭鐢诲嚭锛屾墍浠ョ浉閭荤殑璁℃暟鐐逛箣闂寸殑鏃堕棿闂撮殧涓0.1s鏍规嵁杩愬姩瀛﹀叕寮忓緱锛鈻硏=at2锛宎=鈻硏t2=xAB?xDE3T2=0.52m/s2锛岀敱浜庝粠A鍒癋鐩搁偦鐨勮鏁扮偣浣嶇Щ閫愭笎鍑忓皬锛屾墍浠绾稿甫鍋氬噺閫熻繍鍔紝鍔犻熷害鏂瑰悜涓庡皬杞﹁繍鍔ㄧ殑鏂瑰悜鐩稿弽锛庘憽濡傛灉鍦ㄦ煇娆″疄楠屼腑锛屼氦娴佺數鐨勯鐜囧亸绂60Hz锛岄偅涔堝疄闄...
绛旓細锛1锛夋牴鎹浉閭荤殑鐩哥瓑鏃堕棿闂撮殧浣嶇Щ涔嬪樊鐩哥瓑锛屽嵆鈻硏=at2=甯告暟锛屾墍浠ュ皬杞﹀仛鍖鍔犻熺洿绾胯繍鍔紟锛2锛夋牴鎹寑鍙橀熺洿绾胯繍鍔ㄤ腑鏃堕棿涓偣鐨勯熷害绛変簬璇ヨ繃绋嬩腑鐨勫钩鍧囬熷害锛屽彲浠ユ眰鍑烘墦绾稿甫涓奃鐐规椂灏忚溅鐨勭灛鏃堕熷害澶у皬锛巚D=0.49?0.17502脳0.1=1.575m/s鏍规嵁杩愬姩瀛﹀叕寮忓緱锛氣柍x=at2锛宎=0.1750?0.07?0.07(0.1)...
绛旓細鎵浠ョ敤(X5-X2)+(X4-X1)=2*3鈻硏=6aT2锛屽彲浠ュ噺灏忚宸潵姹傚姞閫熷害銆傞愬樊娉曞厖鍒嗗埄鐢ㄤ簡娴嬮噺鏁版嵁锛屽張淇濇寔浜嗗娆℃祴閲忕殑浼樼偣锛屽噺灏戜簡娴嬮噺璇樊銆傞愬樊娉曞簲鐢ㄥ疄渚 鍦ㄩ珮涓墿鐞嗏滄眰鍖鍙橀熺洿绾胯繍鍔ㄧ墿浣撶殑鍔犻熷害鈥濆疄楠屼腑鍒嗘瀽绾稿甫銆傝繍鐢ㄥ叕寮鈻砐=at2;X3-X1=X4-X2=Xm-X锛坢-2锛夊綋鏃堕棿闂撮殧T鐩哥瓑鏃讹紝鍋囪娴嬪緱...
绛旓細锛1锛绾稿甫B绔笌婊戝潡鐩歌繛鎺ワ紝鍦ㄥ浘涓彂鐜颁粠鎵揃鐐瑰埌鎵揂鐐圭殑杩囩▼涓紝鐢变簬鐩搁偦鐨勬椂闂撮棿闅斾綅绉讳箣宸浉绛夛紝鐩搁偦璁℃椂鐐圭殑浣嶇Щ闂撮殧瓒婃潵瓒婂ぇ锛屾墍浠ョ焊甯︾殑閫熷害瓒婃潵瓒婂ぇ锛屾墍浠ヨ繖娈垫椂闂村唴灏忚溅鍋氬寑鍔犻熻繍鍔紟锛3锛夌敱浜庣浉閭荤殑鏃堕棿闂撮殧浣嶇Щ涔嬪樊鐩哥瓑鈻硏=0.20cm锛屾牴鎹繍鍔ㄥ鍏紡鎺ㄨ鈻硏=at2寰楀嚭锛歛=鈻硏t2锛0.20脳10?
绛旓細锛1锛夌敱浜嶢B=42.0mm锛孉C=88.0mm锛孉D=138.0mm锛屾墍浠ワ細BC=46mm锛 CD=50mm鎵撶偣闂撮殧涓篢=0.02s锛涙牴鎹寑鍙橀熺洿绾胯繍鍔ㄧ殑鎺ㄨ鍏紡鈻硏=aT2锛屸柍x=CD-BC=BC-AB=4mm=aT2锛岃В寰楋細a=10m/s2锛岋紙2锛夋牴鎹寑鍙橀熺洿绾胯繍鍔ㄤ腑鏃堕棿涓偣鐨勯熷害绛変簬璇ヨ繃绋嬩腑鐨勫钩鍧囬熷害锛孷B=xAC2T=2.2m/s鏁呯瓟妗堜负锛10锛2.2...
绛旓細锛1锛夋牴鎹寑鍙橀熺洿绾胯繍鍔ㄧ殑鎺ㄨ鈻硏=aT2锛屾湁锛歺6?x3锛3a1T2 鈶爔5?x2锛3a2T2 鈶4?x1锛3a3T2 鈶锛漚1+a2+a33 鈶ｈ仈绔嬧憼鈶♀憿鈶ｈВ寰楋細a锛(x4+x5+x6)?(x3+x2+x1)9T2锛庢晠绛旀涓猴細a锛(x4+x5+x6)?(x3+x2+x1)9T2锛庯紙2锛夆憼鏍规嵁鎵鎻愪緵鏁版嵁锛岄噰鐢ㄦ弿鐐规硶鍙纭敾鍑哄浘璞″...
绛旓細AF娈电殑骞冲潎閫熷害涓猴細.v=xAF5T=(10+14+18+22+26)脳10?35脳0.02=0.9m/s锛嶦鐐圭殑鐬椂閫熷害绛変簬DF娈电殑骞冲潎閫熷害锛屽洜姝ゆ湁锛歷E=xDF2T=(22+26)脳10?32脳0.02=1.2m/s杩炵画鐩哥瓑鏃堕棿鍐呯殑浣嶇Щ涔嬪樊鈻硏=4mm=0.004m锛庢牴鎹鈻硏=aT2寰楋細a=鈻硏T2=0.0040.022=10m/s2锛庣瓟锛绾稿甫鍦ㄨ繍鍔ㄤ腑锛孉F娈电殑...
