ÌâÄ¿ÄÚÈÝ
11£®ÔÚÎïÀíѧµÄ·¢Õ¹¹ý³ÌÖУ¬Ðí¶àÎïÀíѧ¼ÒµÄ¿Æѧ·¢ÏÖÍƶ¯ÁËÈËÀàÀúÊ·µÄ½ø²½£®ÔÚ¶ÔÒÔϼ¸Î»ÎïÀíѧ¼ÒÔÚµç´ÅѧÁìÓòÄÚËù×÷¿Æѧ¹±Ï×µÄÐðÊöÖУ¬´íÎóµÄ˵·¨ÊÇ£¨¡¡¡¡£©A£® | ¸»À¼¿ËÁÖ²»½ö·¢ÏÖÀ×µçÏÖÏóµÄ±¾ÖÊ£¬»¹×îÔçÈÏʶÁ˼â¶Ë·ÅµçµÄÖØÒªÐÔ£¬²¢ÓÉ´ËÌá³öÁ˱ÜÀ×ÕëµÄÉèÏë | |
B£® | ·¨ÀµÚÌá³öµçºÉÖÜΧ´æÔÚ¡°³¡¡±£¬²¢´´ÔìÐÔµØÓá°µçÁ¦Ïߣ¨¼´µç³¡Ïߣ©¡±ÐÎÏóµØÃèÊöµç³¡ | |
C£® | Ó¢¹úÎïÀíѧ¼Ò½¹¶úͨ¹ýһϵÁÐʵÑé·¢ÏÖÁ˽¹¶ú¶¨ÂÉQ=I2Rt | |
D£® | °Â˹ÌØ·¢ÏÖÁ˵çÁ÷µÄ´ÅЧӦ£¬²¢×ܽá³öÁË×óÊÖ¶¨Ôò |
·ÖÎö ¸ù¾ÝÎïÀíѧʷºÍ³£Ê¶½â´ð£¬¼ÇסÖøÃûÎïÀíѧ¼ÒµÄÖ÷Òª¹±Ï×¼´¿É£®
½â´ð ½â£ºA¡¢¸»À¼¿ËÁÖ²»½ö·¢ÏÖÀ×µçÏÖÏóµÄ±¾ÖÊ£¬»¹×îÔçÈÏʶÁ˼â¶Ë·ÅµçµÄÖØÒªÐÔ£¬²¢ÓÉ´ËÌá³öÁ˱ÜÀ×ÕëµÄÉèÏ룬¹ÊAÕýÈ·£»
B¡¢·¨ÀµÚÌá³öµçºÉÖÜΧ´æÔÚ¡°³¡¡±£¬²¢´´ÔìÐÔµØÓá°µçÁ¦Ïߣ¨¼´µç³¡Ïߣ©¡±ÐÎÏóµØÃèÊöµç³¡£¬¹ÊBÕýÈ·£»
C¡¢Ó¢¹úÎïÀíѧ¼Ò½¹¶úͨ¹ýһϵÁÐʵÑé·¢ÏÖÁ˽¹¶ú¶¨ÂÉQ=I2Rt£¬¹ÊCÕýÈ·£»
D¡¢°Â˹ÌØ·¢ÏÖÁ˵çÁ÷µÄ´ÅЧӦ£¬°²Åà×ܽá³öÁË×óÊÖ¶¨Ôò£¬¹ÊD´íÎó£»
±¾ÌâÑ¡´íÎóµÄ£¬¹ÊÑ¡£ºD£®
µãÆÀ ±¾Ì⿼²éÎïÀíѧʷ£¬Êdz£Ê¶ÐÔÎÊÌ⣬¶ÔÓÚÎïÀíѧÉÏÖØ´ó·¢ÏÖ¡¢·¢Ã÷¡¢ÖøÃûÀíÂÛÒª¼ÓÇ¿¼ÇÒ䣬ÕâÒ²ÊÇ¿¼ÊÔÄÚÈÝÖ®Ò»£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿
17£®Èçͼ¼×Ëùʾ£¬ÔÚÊúÖ±·½ÏòÉÏÓÐËÄÌõ¼ä¾àÏàµÈµÄˮƽÐéÏßL1¡¢L2¡¢L3¡¢L4£¬ÔÚL1L2Ö®¼äºÍL3L4Ö®¼ä´æÔÚÔÈÇ¿´Å³¡£¬´Å¸ÐӦǿ¶ÈB´óС¾ùΪ1T£¬·½Ïò´¹Ö±ÓÚÐéÏßËùÔÚƽÃ森ÏÖÓÐÒ»¾ØÐÎÏßȦabcd£¬¿í¶Ècd=L=0.5m£¬ÖÊÁ¿Îª0.1kg£¬µç×èΪ2¦¸£¬½«Æä´ÓͼʾλÖÃÓɾ²Ö¹ÊÍ·Å£¨cd±ßÓëL1Öغϣ©£¬ËÙ¶ÈËæʱ¼äµÄ±ä»¯¹ØϵÈçͼÒÒËùʾ£¬t1ʱ¿Ìcd±ßÓëL2Öغϣ¬t2ʱ¿Ìab±ßÓëL3Öغϣ¬t3ʱ¿Ìab±ßÓëL4Öغϣ¬ÒÑÖªt1¡«t2µÄʱ¼ä¼ä¸ôΪ0.6s£¬Õû¸öÔ˶¯¹ý³ÌÖÐÏßȦƽÃæʼÖÕ´¦ÓÚÊúÖ±·½Ïò£¬ÖØÁ¦¼ÓËÙ¶ÈgÈ¡10m/s2£®Ôò£¨¡¡¡¡£©
A£® | ÔÚ0¡«t1ʱ¼äÄÚ£¬Í¨¹ýÏßȦµÄµçºÉÁ¿Îª0.25C | |
B£® | ÏßȦÔÈËÙÔ˶¯µÄËٶȴóСΪ8m/s | |
C£® | ÏßȦµÄ³¤¶ÈadΪ1m | |
D£® | 0¡«t3ʱ¼äÄÚ£¬ÏßȦ²úÉúµÄÈÈÁ¿Îª4.2J |
19£®´«¸ÐÆ÷¿ÉÒÔ½øÐÐÐÅÏ¢²É¼¯²¢°Ñ²É¼¯µ½µÄÐÅϢת»»ÎªÒ×ÓÚ¿ØÖƵÄÁ¿£¬Æ乤×÷¹ý³Ì¿ÉÄÜÊÇ£¨¡¡¡¡£©
A£® | ½«¹âѧÁ¿×ª»»³ÉµçѧÁ¿ | B£® | ½«µçѧÁ¿×ª»»³ÉÈÈѧÁ¿ | ||
C£® | ½«Á¦Ñ§Á¿£¨ÈçÐαäÁ¿£©×ª»»³É´ÅѧÁ¿ | D£® | ½«µçѧÁ¿×ª»»³ÉÁ¦Ñ§Á¿ |
6£®ÎïÌå×öÔÈËÙÔ²ÖÜÔ˶¯Ê±£¬ÏÂÁÐ˵·¨Öв»ÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A£® | ÏßËÙ¶ÈÊÇʸÁ¿£¬±£³Ö²»±ä | |
B£® | ÎïÌåʵ¼ÊÉÏÊÇ×ö±ä¼ÓËÙÇúÏßÔ˶¯ | |
C£® | ÏòÐļÓËٶȴóС²»±ä£¬·½Ïò×ÜÖ¸ÏòÔ²ÐÄ | |
D£® | ÏòÐÄÁ¦µÄ´óС²»±ä£¬·½Ïò×ÜÖ¸ÏòÔ²ÐÄ |
16£®ÔÚµØÇòÉϵÄPµãºÍQµã·Ö±ð·ÅÓÐÖÊÁ¿ÏàµÈµÄÎïÌ壬P¡¢Qµ½µØÐĵľàÀëÏàµÈ£¬Ôò·ÅÔÚQµãµÄСÇò£¨¡¡¡¡£©
A£® | ÏßËٶȴó | B£® | ½ÇËٶȴó | C£® | ÖÜÆÚ´ó | D£® | תËÙ´ó |
3£®Ä³ÈËÆï×ÔÐгµÒÔ10 m/sµÄËÙ¶ÈÔÚ´ó·çÖÐÏò¶«ÐÐÊ»£¬Ëû¸Ðµ½·çÕýÒÔͬÑù´óСµÄËÙÂÊ´Ó±±·½´µÀ´£¬Êµ¼ÊÉÏ·çµÄËÙ¶ÈÊÇ£¨¡¡¡¡£©
A£® | 14 m/s£¬·½ÏòΪ±±Æ«Î÷45¡ã | B£® | 14 m/s£¬·½ÏòΪÄÏÆ«Î÷45¡ã | ||
C£® | 10 m/s£¬·½ÏòΪÕý±± | D£® | 10 m/s£¬·½ÏòΪÕýÄÏ |
20£®ÈçͼËùʾ£¬¹â»¬Ð±Ãæ·ÅÔÚˮƽÃæÉÏ£¬Ð±ÃæÉÏÓù̶¨µÄÊúÖ±µ²°åµ²×¡Ò»¸ö¹â»¬µÄÖØÇò£®µ±Õû¸ö×°ÖÃÑØˮƽÃæÏò×ó¼õËÙÔ˶¯µÄ¹ý³ÌÖУ¬¹ØÓÚÖØÇòËùÊܸ÷Á¦×ö¹¦Çé¿öµÄ˵·¨ÖÐÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A£® | ÖØÁ¦²»×ö¹¦ | B£® | бÃæ¶ÔÇòµÄµ¯Á¦Ò»¶¨×öÕý¹¦ | ||
C£® | µ²°å¶ÔÇòµÄµ¯Á¦¿ÉÄܲ»×ö¹¦ | D£® | µ²°å¶ÔÇòµÄµ¯Á¦Ò»¶¨×ö¸º¹¦ |
1£®ÈçͼËùʾ£¬Ïà¾àΪLµÄ¹â»¬Æ½ÐнðÊôµ¼¹ìab¡¢cd·ÅÖÃÔÚˮƽ×ÀÃæÉÏ£¬×èֵΪRµÄµç×èÓëµ¼¹ìµÄÁ½¶Ëa¡¢cÏàÁ¬£®»¬¸ËMNÖÊÁ¿Îªm£¬´¹Ö±ÓÚµ¼¹ì²¢¿ÉÔÚµ¼¹ìÉÏ×ÔÓÉ»¬¶¯£¬²»¼Æµ¼¹ì¡¢»¬¸ËÒÔ¼°µ¼Ïߵĵç×裮Õû¸ö×°Ö÷ÅÓÚÊúÖ±·½Ïò·¶Î§×ã¹»´óµÄÔÈÇ¿´Å³¡ÖУ¬´Å¸ÐӦǿ¶ÈµÄ´óСΪB£®»¬¸ËµÄÖеãϵһ²»¿ÉÉ쳤µÄÇáÉþ£¬ÉþÈƹý¹Ì¶¨ÔÚ×À±ßµÄ¹â»¬ÇỬÂÖºó£¬ÓëÁíÒ»ÖÊÁ¿Ò²ÎªmµÄÎï¿éÏàÁ¬£¬Éþ´¦ÓÚÀֱ״̬£®ÏÖ½«Îï¿éÓɾ²Ö¹ÊÍ·Å£¬µ±Îï¿é´ïµ½×î´óËÙ¶Èʱ£¬Îï¿éÏÂÂä¸ß¶Èh=$\frac{{2{m^2}g{R^2}}}{{{{£¨{BL}£©}^4}}}$£¬ÓÃg±íʾÖØÁ¦¼ÓËٶȣ¬ÔòÔÚÎï¿éÓɾ²Ö¹¿ªÊ¼ÏÂÂäÖÁËÙ¶È×î´óµÄ¹ý³ÌÖУ¨¡¡¡¡£©
A£® | Îï¿é´ïµ½µÄ×î´óËÙ¶ÈÊÇ$\frac{mgR}{{{{£¨{BL}£©}^2}}}$ | |
B£® | ͨ¹ýµç×èRµÄµçºÉÁ¿ÊÇ$\frac{{2B{m^2}gRL}}{{{{£¨{BL}£©}^4}}}$ | |
C£® | µç×èR·Å³öµÄÈÈÁ¿µÈÓÚÎï¿émÖØÁ¦ÊÆÄܵļõÉÙÁ¿ | |
D£® | »¬¸ËMN²úÉúµÄ×î´ó¸ÐÓ¦µç¶¯ÊÆΪ$\frac{mgR}{BL}$ |