ʵÑéÌ⣨19·Ö£©£º
£¨1£©Ä³Í¬Ñ§ÓÃÂÝÐý²â΢Æ÷²âÁ¿Ä³Ò»µ¼ÏßµÄÖ±¾¶£¬²âÁ¿½á¹ûÈçÏÂͼ¼×Ëùʾ£¬Ôò¸Ãµ¼ÏßµÄÖ±¾¶Îª     mm£®¸ÃͬѧÔÙÓÃÖ÷³ß×îС·Ö¶ÈΪ1mm£¬ÓαêÉÏÓÐ20¸ö·Ö¶ÈµÄ¿¨³ß²âÁ¿Ä³½ðÊôÇòµÄÖ±¾¶£¬²âÁ¿½á¹ûÈçÏÂͼÒÒËùʾ£¬Ôò¸Ã½ðÊôÇòµÄÖ±¾¶Îª     cm£®

£¨2£©ÔÚ̽¾¿ºÏÁ¦µÄ·½·¨Ê±£¬ÏȽ«ÏðƤÌõµÄÒ»¶Ë¹Ì¶¨ÔÚˮƽľ°åÉÏ£¬ÁíÒ»¶ËϵÉÏ´øÓÐÉþÌ×µÄÁ½¸ùϸÉþ£®ÊµÑéʱ£¬ÐèÒªÁ½´ÎÀ­ÉìÏðƤÌõ£¬Ò»´ÎÊÇͨ¹ýÁ½Ï¸ÉþÓÃÁ½¸öµ¯»É³Ó»¥³É½Ç¶ÈµØÀ­ÏðƤÌõ£¬ÁíÒ»´ÎÊÇÓÃÒ»¸öµ¯»É³Óͨ¹ýϸÉþÀ­ÏðƤÌõ£®
¢ÙʵÑé¶ÔÁ½´ÎÀ­ÉìÏðƤÌõµÄÒªÇóÖУ¬ÏÂÁÐÄÄЩ˵·¨ÊÇÕýÈ·µÄ         
A£®½«ÏðƤÌõÀ­ÉìÏàͬ³¤¶È¼´¿É
B£®½«ÏðƤÌõÑØÏàͬ·½ÏòÀ­µ½Ïàͬ³¤¶È
C£®½«µ¯»É³Ó¶¼À­Éìµ½Ïàͬ¿Ì¶È
D£®½«ÏðƤÌõºÍÉþµÄ½áµãÀ­µ½ÏàͬλÖÃ
¢ÚͬѧÃÇÔÚ²Ù×÷¹ý³ÌÖÐÓÐÈçÏÂÒéÂÛ£¬ÆäÖжԼõСʵÑéÎó²îÓÐÒæµÄ˵·¨ÊÇ           
A£®Á½Ï¸Éþ±ØÐëµÈ³¤
B£®µ¯»É³Ó¡¢Ï¸Éþ¡¢ÏðƤÌõ¶¼Ó¦Óëľ°åƽÐÐ
C£®ÓÃÁ½µ¯»É³ÓͬʱÀ­Ï¸ÉþʱÁ½µ¯»É³ÓʾÊýÖ®²îÓ¦¾¡¿ÉÄÜ´ó
D£®À­ÏðƤÌõµÄϸÉþÒª³¤Ð©£¬±ê¼ÇͬһϸÉþ·½ÏòµÄÁ½µãҪԶЩ
£¨3£©ÔÚ¡°Ì½¾¿µ¯»Éµ¯Á¦´óСÓëÉ쳤Á¿µÄ¹Øϵ¡±ÊµÑéÖУ¬¼×¡¢ÒÒÁ½Î»Í¬Ñ§Ñ¡Óò»Í¬µÄÏðƤÉþ´úÌ浯»É£¬Îª²âÁ¿ÏðƤÉþµÄ¾¢¶ÈϵÊý£¬ËûÃÇÔÚÏðƤÉþ϶ËÃæÒÀ´ÎÖð¸ö¹ÒϹ³Â루ÿ¸ö¹³ÂëµÄÖÊÁ¿¾ùΪm=0.1kg£¬È¡g=10m/s2£©£¬²¢¼Ç¼Éþ϶˵Ä×ø±êX i¼Ó£¨Ï±êi±íʾ¹ÒÔÚÉþ϶˹³Âë¸öÊý£©£®È»ºóÖð¸öÄÃϹ³Â룬ͬÑù¼Ç¼Éþ϶˵Ä×ø±êXi¼õ£¬Éþ϶ËÃæ×ø±êµÄÖµXi£½£¨Xi¼Ó+X i¼õ£©/2µÄÊý¾ÝÈçÏÂ±í£º
¹ÒÔÚÏðƤÉþ϶˵Ĺ³Âë¸öÊý
ÏðƤÉþ϶˵Ä×ø±ê£¨X/mm£©
¼×
ÒÒ
1
216.5
216.5
2
246.7
232.
3
284.0
246.5
4
335.0
264.2
5
394.5
281.3
6
462.0
301.0
¢ÙͬһÏðƤÉþµÄX¼Ó             X¼õ£¨´óÓÚ»òСÓÚ£©£»
¢Ú             Í¬Ñ§µÄÊý¾Ý¸ü·ûºÏʵÑéÒªÇ󣨼׻òÒÒ£©£»
¢ÛijͬѧѡÔñÒ»×éÊý¾ÝÓÃ×÷³öÀ­Á¦FÓë¸Ã±äÁ¿(Xn-X1)µÄͼÏñ£¬ÔòÓÉͼÏñ¿ÉµÃ¸ÃÏðƤÉþµÄ¾¢¶ÈϵÊýk=____________N/m£»

¢ÜΪÁ˸üºÃµÄ²âÁ¿¾¢¶ÈϵÊý£¬ÔÚÑ¡Óù³ÂëʱÐ迼ÂǵÄÒòËØÓÐÄÄЩ£¨Ð´Ò»ÖÖ¼´¿É£©£¿
£¨1£©1.234¡ª1.237mm   1.145cm
£¨2£©¢ÙBD  ¢ÚBD
£¨3£©¢ÙСÓÚ  ¢ÚÒÒ
¢Û58----60£¨N/m£©
¢Ü¾¡¿ÉÄÜʹÉ쳤Á¿ÔÚµ¯ÐÔ·¶Î§ÄÚ£¬Í¬Ê±ÓÐ×ã¹»´óµÄÉ쳤Á¿£¬ÒÔ¼õС³¤¶È²âÁ¿µÄÎó²î¡£
ÂÔ
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£ºÊµÑéÌâ

£¨1£©£¨6·Ö£©Ò»¿óÇøµÄÖØÁ¦¼ÓËÙ¶ÈÆ«´ó£¬Ä³Í¬Ñ§¡°Óõ¥°Ú²â¶¨ÖØÁ¦¼ÓËٶȡ±ÊµÑé̽¾¿¸ÃÎÊÌâ¡£
¢ÙÓÃ×îС·Ö¶ÈΪºÁÃ×µÄÃ׳߲âµÃ°ÚÏߵij¤¶ÈΪ990.8mm£¬ÓÃ10·Ö¶ÈµÄÓα꿨³ß²âµÃ°ÚÇòµÄÖ±¾¶ÈçͼËùʾ£¬°ÚÇòµÄÖ±¾¶Îª         mm¡£
¢Ú°Ñ°ÚÇò´ÓƽºâλÖÃÀ­¿ªÒ»¸öС½Ç¶ÈÓɾ²Ö¹ÊÍ·Å£¬Ê¹µ¥°ÚÔÚÊúֱƽÃæÄÚ°Ú¶¯£¬ÓÃÃë±í²â³öµ¥°Ú×ö50´ÎÈ«Õñ¶¯ËùÓõÄʱ¼ä£¬Ãë±í¶ÁÊýÈçͼËùʾ£¬¶Á³öËù¾­ÀúµÄʱ¼ä£¬µ¥°ÚµÄÖÜÆÚΪ      s¡£
¢Û²âµÃµ±µØµÄÖØÁ¦¼ÓËÙ¶ÈΪ           m/s2¡££¨±£Áô3λÓÐЧÊý×Ö£©

£¨2£©£¨l1·Ö£©´ÓϱíÖÐÑ¡³öÊʵ±µÄʵÑéÆ÷²Ä£¬Éè¼ÆÒ»¸öµç·À´²âÁ¿µçÁ÷±í A1µÄÄÚ×è r1£¬ÒªÇó·½·¨¼ò½Ý£¬Óо¡¿ÉÄܸߵIJâÁ¿¾«¶È£¬²¢ÄܲâµÃ¶à×éÊý¾Ý¡£
Æ÷²Ä£¨´úºÅ£©
¹æ¸ñ
´ý²âµçÁ÷±í£¨A1£©
Á¿³Ì10mA£¬ÄÚ×èr1´ý²â£¨Ô¼10W£©
µçÁ÷±í£¨A2£©
Á¿³Ì300mA£¬ÄÚ×èr2£½300W
µçѹ±í£¨V1£©
Á¿³Ì3V£¬ÄÚ×èr3£½3kW
µçѹ±í£¨V2£©
Á¿³Ì15V£¬ÄÚ×èr4£½15kW
±£»¤µç×裨R0£©
×èÖµÔ¼100W
»¬Ïß±ä×èÆ÷£¨R£©
×Ü×èÖµ10W
µç³Ø£¨E£©
µç¶¯ÊÆ1.5V£¬ÄÚ×èºÜС
µ¥µ¶µ¥ÖÀµç¼ü£¨K£©
 
µ¼ÏßÈô¸É
 
¢ÙÔÚÐéÏß·½¿òÖл­³öµç·ͼ£¬±êÃ÷ËùÓÃÆ÷²ÄµÄ´úºÅ¡£

¢ÚÈôÑ¡²âÁ¿Êý¾ÝÖеÄÒ»×éÀ´¼ÆËãr1£¬ÔòËùÓõıí´ïʽΪr1£½________¡£Ê½Öи÷·ûºÅµÄÒâÒåÊÇ£º________________________________________________                            

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£ºÊµÑéÌâ

£¨17·Ö£©
¢ñ.(4·Ö) ÔÚ²âÁ¿ÖØÁ¦¼ÓËٶȵÄʵÑéÖУ¬Ä³Í¬Ñ§ÓÃÒ»¸ùϸÏߺÍÒ»¾ùÔÈСÇòÖƳɵ¥°Ú¡£ËûÒѾ­²âµÃ´Ëµ¥°Ú50¸öÖÜÆÚµÄʱ¼äΪt£¬´ÓÐü¹Òµãµ½Ð¡Çò¶¥¶ËµÄÏß³¤Îªl£¬»¹ÐèÒª²âÁ¿µÄÎïÀíÁ¿
Ϊ                 ¡£½«gÓòâµÃÁ¿±íʾ£¬Ôòg=                ¡£
¢ò.(13·Ö) ²âÒ»×èÖµÔ¼1¦¸µÄµç×èË¿RxµÄ×èÖµ¡£Îª½Ï׼ȷ²âÁ¿£¬ÒªÇó¶à²â¼¸×éÊý¾Ý¡£
ʵÑéÊÒ¹©Ñ¡ÔñµÄÆ÷²ÄÓУº
µçÔ´E£ºµç¶¯ÊÆÔ¼1.5V£¬ÄÚ×è¿ÉºöÂÔ
µçÁ÷±íA1£ºÁ¿³Ì0¡«0.2A£¬ÄÚ×èÔ¼0.5¦¸
µçÁ÷±íA2£ºÁ¿³Ì0¡«0.01A£¬ÄÚ×èÔ¼0.05¦¸
µçѹ±íV1£ºÁ¿³Ì3.0V£¬ÄÚ×è·Ç³£´ó
µçѹ±íV2£ºÁ¿³Ì15.0V£¬ÄÚ×è·Ç³£´ó
»¬¶¯±ä×èÆ÷R£º0¡«10¦¸
µç×èÏäR£°£º0¡«99.99¦¸
µç¼üSÓëµ¼ÏßÈô¸É
£¨1£©Ä³ÊµÑéС×éµÄͬѧÉè¼ÆÁËÈçÉÏҳͼËùʾµÄµç·ͼÀ´²âÁ¿Rx£¬¸Ãµç·Óв»Í×»ò²»·ûºÏÒªÇóÖ®´¦£¬ÇëÖ¸³öÆäÖеÄÁ½´¦£º
¢Ù                                   £»
¢Ú                                   ¡£

£¨2£©Ç뽫ÄãÉè¼ÆµÄ²âÁ¿µç·ͼÔÚ·½¿òÄÚ£¬²¢±êÃ÷ËùÑ¡Æ÷²Ä·ûºÅ¡£
ÓòâµÃµÄÎïÀíÁ¿¼ÆËãRxµÄ¹«Ê½ÊÇRx=                    £»Ê½Öи÷ÎïÀíÁ¿µÄÎïÀíÒâÒåÊÇ                                                                         ¡£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£ºÌî¿ÕÌâ

£¨10·Ö£©ÑéÖ¤¶¯Á¿Êغ㶨ÂÉʵÑé°´ÕÕÈçͼËùʾµÄÄÇÑù°²×°ºÃ×°Ö㬽«Ð±²Û¹Ì¶¨ÔÚ×À±ß£¬Ê¹²ÛµÄÄ©¶Ë         £¬±»ÅöСÇò·ÅÔÚ²ÛÇ°¶Ë±ßÔµ´¦,ÔÚµØÃæÉÏÆÌ°×Ö½¡¢¸´Ð´Ö½£¬¿ÉÒÔ¼ÇÏÂСÇòÂäµØµãµÄƽ¾ùλÖá£ÊµÑéÒªÇó£ºmA     mB£¨Ìî>£¬=£¬<£©Í¨³£Òª²â³öPµãµÄƽ¾ùλÖã¬Èà            Ð¡Çò£¨ÌîA»òB£©¶à´Î´Óб²ÛÉÏͬһλÖùöÏ£¬Óþ¡¿ÉÄÜСµÄÔ²°ÑËùÓÐСÇòÂäµãȦÔÚÀïÃ棬ԲÐÄP¾ÍÊÇÂäµãµÄƽ¾ùλÖã¬Èôϵͳ¶¯Á¿Êغ㣬ÔòÓбí´ïʽ           £¨ÓÃmA¡¢mB¡¢OM¡¢¶Ô¸ÃʵÑé½áÂÛÓÐÎÞÓ°Ïì   £¨ÌîÓÐ0P¡¢ONµÈ±íÊö£©£¬ÊµÑéÖÐÓÉÓÚ¹ìµÀ²»¹â»¬£¬»òÎÞ£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£ºÊµÑéÌâ

£¨8·Ö£©£¨1£©ÓÐÒ»¸öͬѧÓÃÈçÏ·½·¨²â¶¨¶¯Ä¦²ÁÒòÊý£ºÓÃͬÖÖ²ÄÁÏ×ö³ÉµÄAB¡¢BDƽÃ棨ÈçͼËùʾ£©£¬ABÃæΪһбÃ棬¸ßh£¬³¤L1£¬BDÊÇÒ»×ã¹»³¤µÄˮƽÃ棬Á½ÃæÔÚBµã½Ó´¥Á¼ºÃÇÒΪ»¡ÐΣ¬ÏÖÈÃÖÊÁ¿ÎªmµÄСÎï¿éÓɾ²Ö¹¿ªÊ¼»¬Ï£¬µ½´ïBµãºó˳Àû½øÈëˮƽÃ棬×îºó»¬µ½Cµã¶øÍ£Ö¹£¬²¢²â³ö=L2£¬Ð¡»¬¿éÓëÁ½¸öƽÃæµÄ¶¯Ä¦²ÁÒòÊýÏàͬ£¬ÓÖÒÔÉÏÊý¾Ý¿ÉÒÔÇó³öÎï¿éÓëƽÃæ¼äµÄ¶¯Ä¦²ÁÒòÊý¦Ì=­­­           ¡£

£¨2£©¡°Ñо¿¹²µãÁ¦µÄºÏ³É¡±µÄʵÑéÇé¿öÈçͼ¼×Ëùʾ£¬ÆäÖÐAΪ¹Ì¶¨ÏðƤ½îµÄͼ¶¤£¬OΪÏðƤ½îÓëϸÉþµÄ½áµã£¬OBºÍOCΪϸÉþ£¬Í¼ÒÒÊÇÔÚ°×Ö½Éϸù¾ÝʵÑé½á¹û»­³öµÄͼʾ£®

¢ÙͼÒÒÖеÄFÓëF¡äÁ½Á¦ÖУ¬·½ÏòÒ»¶¨ÑØAO·½ÏòµÄÊÇ_   ¡ø  _£®
¢Ú(µ¥Ñ¡Ì⣩±¾ÊµÑé²ÉÓõĿÆѧ·½·¨ÊÇ£¨¡ø£©
£¨A£©ÀíÏëʵÑé·¨ £¨B£©µÈЧÌæ´ú·¨
£¨C£©¿ØÖƱäÁ¿·¨ £¨D£©½¨Á¢ÎïÀíÄ£ÐÍ·¨

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£ºÊµÑéÌâ

ÔÚ¡°Óõ¥°Ú²âÖØÁ¦¼ÓËٶȡ±µÄʵÑéÖУº
£¨1£©ÏÂÃæËù¸øÆ÷²ÄÖУ¬Ñ¡ÓÃÄÄЩÆ÷²Ä½ÏºÃ£¬Ç뽫ËùÑ¡ÓÃÆ÷²ÄÇ°×ÖĸÒÀ´ÎÌîÔÚÖ¸¶¨Î»ÖÃ
A£®³¤1mµÄ×óÓÒµÄϸÏß¡¡B£®³¤30cm×óÓÒµÄϸÏß¡¡C£®Ö±¾¶2cmµÄǦÇòD£®Ö±¾¶2cmµÄľÇò E£®Ãë±í¡¡F£®Ê±ÖÓ G£®×îС¿Ì¶ÈÊÇÀåÃ×µÄÖ±³ß¡¡ H£®×îС¿Ì¶ÈÊǺÁÃ×µÄÖ±³ß
ËùÑ¡Æ÷²ÄÓУº¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡
£¨2£©Ä³Í¬Ñ§²â³öÁËn´ÎÈ«Õñ¶¯µÄʱ¼äΪt£¬²âµÃ°ÚÏß³¤¶ÈΪl£¬°ÚÇòµÄÖ±¾¶Îªd£¬ÓÃÉÏÊöÎïÀíÁ¿µÄ·ûºÅд³ö²âÖØÁ¦¼ÓËٶȵÄÒ»°ã±í´ïʽΪg=            
£¨3£©ÓԱÔÚijÐÇÇòÉÏÒ²ÀûÓõ¥°Ú²â¸ÃÐÇÇò±íÃæ´¦µÄÖØÁ¦¼ÓËٶȡ£ÊµÑé²âµÃÁË5ÖÖ²»Í¬°Ú³¤Çé¿öϵ¥°ÚµÄÕñ¶¯ÖÜÆÚ£¬¼Ç¼ÈçÏ£º
l(m)
0.4
0.6
0.8
1.0
1.2
T(s)
1.01
1.23
1.46
1.56
1.73
T2(s2)
1.02
1.51
2.13
2.43
3.00
ÒÔlΪ×Ý×ø±ê£¬T2Ϊºá×ø±êÔÚ´ðÌâ¾íÉÏ×÷³öl£­T2ͼÐΣ¬²¢ÀûÓÃͼÏßÇó³ö¸ÃÐÇÇò±íÃæµÄÖØÁ¦¼ÓËٶȵĴóСΪg=          £¨¼ÆËãÖÐÈ¡£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£ºÊµÑéÌâ

ÀûÓÃ×ÔÓÉÂäÌåÀ´ÑéÖ¤»úеÄÜÊغ㶨ÂɵÄʵÑ飺ÈôÒÑÖª´òµã¼ÆʱÆ÷µÄµçԴƵÂÊΪ50Hz£¬
µ±µØµÄÖØÁ¦¼ÓËÙ¶Èg="9.8" m/s2£¬ÖØÎïÖÊÁ¿Îªm £¬ÊµÑéÖеõ½Ò»Ìõµã¼£ÇåÎúµÄÖ½´øÈçͼ-4
Ëùʾ£¬ÆäÖÐ0ΪµÚÒ»¸öµã£¬A¡¢B¡¢CΪÁíÍâ3¸öÁ¬Ðøµã£¬¸ù¾ÝͼÖÐÊý¾Ý¿ÉÖª£¬ÖØÎïÓÉ0µã
Ô˶¯µ½Bµã£¬ÖØÁ¦ÊÆÄܼõÉÙÁ¿7.62 m £»¶¯ÄÜÔö¼ÓÁ¿__________£¬²úÉúÎó²î
µÄÖ÷ÒªÔ­Òò____________________¡£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£ºÊµÑéÌâ

¹ýʵÑé¶ÔƽÅ×Ô˶¯½øÐÐÑо¿£¬ËûÔÚÊúֱǽÉϼǼÁËÅ×ÎïÏ߹켣µÄÒ»²¿·Ö£¬ÈçͼËùʾ¡£xÖáÑØˮƽ·½Ïò£¬ÓÉͼÖÐËù¸øµÄÊý¾Ý¿ÉÇó³öƽÅ×ÎïÌåµÄ³õËÙ¶ÈÊÇ         m/s£¬ÎïÌå¾­¹ýBµãʱµÄËÙÂÊÊÇ    m/s£¬Å׳öµãµÄ×ø±êÊÇ£¨_____m£¬_____m£©¡££¨gÈ¡10m/s2£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£ºÌî¿ÕÌâ

£¨9·Ö£©ÔÚ¡°ÑéÖ¤»úеÄÜÊغ㶨ÂÉ¡±ÊµÑéÖУ¬ÖÊÁ¿m=1kgµÄÎïÌå×ÔÓÉÏÂÂ䣬µÃµ½ÈçͼËùʾµÄÖ½´ø¡£ÏàÁÚ¼ÆÊýµãʱ¼ä¼ä¸ôΪ0.04s£¬Ôò´òµã¼ÆʱÆ÷´òBµãʱµÄËÙ¶ÈÊÇvB= 2.125               m/s£»´ÓÆðµãOµ½´òÏÂBµã¹ý³ÌÖУ¬ÎïÌåµÄÖØÁ¦ÊÆÄܼõÉÙ?EP =2.325           J£¬´Ë¹ý³ÌÖÐÎïÌ嶯ÄܵÄÔö¼ÓÁ¿?Ek =2.258           J¡££¨gÈ¡10m/s2£©

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸