ÌâÄ¿ÄÚÈÝ
20£®2016Äêŵ±´¶ûÎïÀíѧ½±°ä·¢¸øÁËÈýλÃÀ¹ú¿Æѧ¼Ò£¬ÒÔ±íÕÃËûÃǽ«ÍØÆ˸ÅÄîÓ¦ÓÃÓÚÎïÀíÑо¿Ëù×öµÄ¹±Ï×£®ÎÒÃÇÖªµÀ£¬°´µ¼µçÐÔÄܲ»Í¬´«Í³²ÄÁÏ´óÖ¿ɷÖΪµ¼ÌåºÍ¾øÔµÌåÁ½À࣬¶øÍØÆ˾øÔµÌåÐÔÖʶÀÌØ£¬ËüÊÇÒ»Öֱ߽çÉϵ¼µç¡¢ÌåÄÚ¾øÔµµÄÐÂÐÍÁ¿×Ó²ÄÁÏ£¬ÀýÈ磬ÔÚͨ³£Ìõ¼þÏÂʯīϩÕý³£µ¼µç£¬µ«ÔÚζȼ«µÍ¡¢Íâ¼ÓÇ¿´Å³¡µÄÇé¿öÏ£¬Æäµçµ¼ÂÊ£¨¼´µç×èÂʵĵ¹Êý£©Í»È»²»ÄÜÁ¬Ðø¸Ä±ä£¬¶øÊdzɱ¶±ä»¯£¬´Ë¼´Á¿×Ó»ô¶ûЧӦ£¨¹ØÓÚ»ô¶ûЧӦ£¬¿É¼ûÏÂÎÄ×¢ÊÍ£©£®ÔÚÕâÖÖÇé¿öÏ£¬µçÁ÷Ö»»áÁ÷¾Ê¯Ä«Ï©±ßÔµ£¬ÆäÄÚ²¿¾øÔµ£¬µ¼µç¹ý³Ì²»»á·¢ÈÈ£¬Ê¯Ä«Ï©±äÉíΪÍØÆ˾øÔµÌ壬µ«ÓÉÓÚ²úÉúÁ¿×Ó»ô¶ûЧӦÐèÒª¼«µÍζȺÍÇ¿´Å³¡µÄÌõ¼þ£¬ËùÒÔÆäµÍÄܺĵÄÓŵãºÜÄѱ»ÍƹãÓ¦Óã®
2012Äê10Ô£¬ÓÉÇ廪´óѧѦÆäÀ¤ÔºÊ¿ÁìÏεÄÖйúÍŶӣ¬Ê×´ÎÔÚʵÑéÖз¢ÏÖÁËÁ¿×Ó·´³£»ô¶ûЧӦ£¬±»³ÆΪÖйú¡°Åµ±´¶û½±¼¶µÄ·¢ÏÖ¡±£¬Á¿×Ó·´³£»ô¶ûЧӦ²»ÐèÒªÍâ¼ÓÇ¿´Å³¡£¬ËùÐè´Å³¡ÓɲÄÁϱ¾ÉíµÄ×Ô·¢´Å»¯²úÉú£¬ÕâÒ»·¢ÏÖʹµÃÍØÆ˾øÔµ²ÄÁÏÔÚµç×ÓÆ÷¼þÖеĹ㷺ӦÓóÉΪ¿ÉÄÜ£®
×¢ÊÍ£º»ô¶ûЧӦÊÇÖ¸½«ÔØÁ÷µ¼Ìå·ÅÔÚÔÈÇ¿´Å³¡ÖУ¬µµ´Å³¡·½ÏòÓëµçÁ÷·½Ïò´¹Ö±Ê±£¬µ¼Ì彫ÔÚÓë´Å³¡¡¢µçÁ÷´¹Ö±µÄ·½ÏòÉÏÐγɵçÊƲ
¸ù¾ÝÒÔÉϲÄÁÏÍƶϣ¬ÏÂÁÐ˵·¨´íÎóµÄÊÇ£¨¡¡¡¡£©
A£® | ÍØÆ˾øÔµÌåµ¼µçʱ¾ßÓÐÁ¿×Ó»¯µÄÌØÕ÷ | |
B£® | »ô¶ûЧӦÓëÔ˶¯µçºÉÔڴų¡ÖÐËùÊܵÄÂåÂ××ÈÁ¦ÓÐ¹Ø | |
C£® | ÔÚÁ¿×Ó·´³£»ô¶ûЧӦÖÐÔ˶¯µçºÉ²»ÔÙÊܴų¡µÄ×÷Óà | |
D£® | Èô½«ÍØÆ˾øÔµ²ÄÁÏÖƳɵçÄÔоƬÓÐÍû½â¾öÆ乤×÷ʱµÄ·¢ÈÈÎÊÌâ |
·ÖÎö ÒÀ¾Ý²ÄÁÏÌṩµÄÐÅÏ¢£¬½áºÏµ¼ÌåÓë¾øÔµÌåµÄÇø±ð£¬¼°»ô¶ûЧӦÏÖÏóµÄÔÀí£¬´Ó¶ø¼´¿ÉÇó½â£®
½â´ð ½â£ºA¡¢Ê¯Ä«Ï©±äÉíΪÍØÆ˾øÔµÌ壬Æäµçµ¼ÂÊ£¨¼´µç×èÂʵĵ¹Êý£©Í»È»²»ÄÜÁ¬Ðø¸Ä±ä£¬¶øÊdzɱ¶±ä»¯£¬¾ßÓÐÁ¿×Ó»¯µÄÌØÕ÷£¬¹ÊAÕýÈ·£»
B¡¢»ô¶ûЧӦÊÇÖ¸½«ÔØÁ÷µ¼Ìå·ÅÔÚÔÈÇ¿´Å³¡ÖУ¬µ±´Å³¡·½ÏòÓëµçÁ÷·½Ïò´¹Ö±Ê±£¬Á£×ÓÔÚÂåÂ××ÈÁ¦×÷ÓÃÏ£¬·¢Éúƫת£¬´Ó¶øµ¼ÖÂÔÚÓë´Å³¡¡¢µçÁ÷´¹Ö±µÄ·½ÏòÉÏÐγɵçÊƲ¹ÊBÕýÈ·£»
C¡¢Á¿×Ó·´³£»ô¶ûЧӦ²»ÐèÒªÍâ¼ÓÇ¿´Å³¡£¬ËùÐè´Å³¡ÓɲÄÁϱ¾ÉíµÄ×Ô·¢´Å»¯²úÉú£¬¹ÊC´íÎó£»
D¡¢µ±µçÁ÷Ö»»áÁ÷¾Ê¯Ä«Ï©±ßÔµ£¬ÆäÄÚ²¿¾øÔµ£¬µ¼µç¹ý³Ì²»»á·¢ÈÈ£¬¼´±ä³ÉΪÍØÆ˾øÔµÌ壬¹ÊDÕýÈ·£»
±¾ÌâÑ¡Ôñ´íÎóµÄ£¬¹ÊÑ¡£ºC£®
µãÆÀ ¿¼²é»ô¶ûЧӦÔÀíÓë×óÊÖ¶¨ÔòµÄÓ¦Óã¬ÕÆÎÕ·ÖÎö²ÄÁÏÌâµÄ·½·¨£¬Àí½âÍØÆ˾øÔµÌåµÄº¬Ò壬עÒâÁ¿×Ó·´³£»ô¶ûЧӦÓëÁ¿×Ó»ô¶ûЧӦµÄÇø±ð£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿
5£®ÖÊÁ¿ÎªmµÄÎï¿éÑØ×ÅÇã½ÇΪ¦ÈµÄ¹Ì¶¨´Ö²ÚбÃæÔÈËÙÏ»¬£¬ÒÑÖªÖØÁ¦¼ÓËÙ¶ÈΪg£¬Ôò£¨¡¡¡¡£©
A£® | Îï¿é¶ÔбÃæµÄѹÁ¦´óСΪmgtan¦È | B£® | Îï¿é¶ÔбÃæµÄĦ²ÁÁ¦´óСΪmgtan¦È | ||
C£® | бÃæ¶ÔÎï¿éµÄÖ§³ÖÁ¦´óСΪmgtan¦È | D£® | бÃæ¶ÔÎï¿é¼äµÄ¶¯Ä¦²ÁÒòËØΪtan¦È |
11£®Ò»Öʵã´ÓAµã¿ªÊ¼×ö³õËÙ¶ÈΪÁãµÄÔȼÓËÙÖ±ÏßÔ˶¯£¬¼ÓËٶȵĴóСΪa£¬B£¬C£¬DÈýµãÊÇÖʵãÔ˶¯Â·¾¶ÉÏÈýµã£¬ÇÒBC=x1£¬CD=x2£®Öʵãͨ¹ýBC¼äËùÓÃʱ¼äÓë¾¹ýCD¼äËùÓÃʱ¼äÏàµÈ£¬ÔòÖʵ㾹ýCµãµÄËÙ¶ÈΪ£¨¡¡¡¡£©
A£® | $\frac{{x}_{1}+{x}_{2}}{2}$$\sqrt{\frac{a}{{x}_{2}-{x}_{1}}}$ | B£® | $\frac{{x}_{1}+{x}_{2}}{4}$$\sqrt{\frac{a}{{x}_{2}-{x}_{1}}}$ | ||
C£® | $\frac{{x}_{2}-{x}_{1}}{2}$$\sqrt{\frac{a}{{x}_{2}+{x}_{1}}}$ | D£® | $\frac{{x}_{2}-{x}_{1}}{4}$$\sqrt{\frac{a}{{x}_{2}+{x}_{1}}}$ |
15£®ºãÐÇÏòÍâ·øÉäµÄÄÜÁ¿À´×ÔÓÚÆäÄÚ²¿·¢ÉúµÄ¸÷ÖÖÈȺ˷´Ó¦£®ºË·´Ó¦·½³ÌΪ${\;}_{2}^{4}$He+${\;}_{2}^{4}$He¡ú${\;}_{4}^{8}$Be+¦Ã£®ÒÔÏÂ˵·¨²»ÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A£® | ¸ÃºË·´Ó¦Îª¾Û±ä·´Ó¦ | |
B£® | ÈȺ˷´Ó¦ÖÐÓÐÖÊÁ¿¿÷Ëð | |
C£® | ÈȺ˷´Ó¦»á·Å³ö¾Þ´óÄÜÁ¿ | |
D£® | ÓÉÓں˷´Ó¦ÖÐÖÊÁ¿ÊýÊغ㣬ËùÒÔÖÊÁ¿Ò²ÊÇÊغãµÄ |
5£®ÈçͼËùʾ£¬ÊúÖ±¹â»¬¸Ë¹Ì¶¨²»¶¯£¬Ì×ÔÚ¸ËÉϵÄÇᵯ»É϶˹̶¨£¬½«Ì×ÔÚ¸ËÉϵĻ¬¿éÏòÏÂѹËõµ¯»ÉÖÁÀëµØ¸ß¶Èh=0.1m´¦£¬»¬¿éÓ뵯»É²»Ë¨½Ó£®ÏÖÓɾ²Ö¹ÊÍ·Å»¬¿é£¬Í¨¹ý´«¸ÐÆ÷²âÁ¿µ½»¬¿éµÄËٶȺÍÀëµØ¸ß¶Èh²¢×÷³ö»¬¿éµÄ¶¯ÄÜEk-hͼÏó£¬ÆäÖÐh=0.18mʱ¶ÔӦͼÏóµÄ×µã£¬¸ß¶È´Ó0.2mÉÏÉýµ½0.35m·¶Î§ÄÚͼÏóΪֱÏߣ¬ÆäÓàΪÇúÏߣ¬È¡g=10m/s2£¬ÓÉͼÏó¿ÉÖª£¨¡¡¡¡£©
A£® | µ¯»ÉÔ³¤Îª0.18m | B£® | µ¯»ÉµÄ¾¢¶ÈϵÊýΪ100N/m | ||
C£® | »¬¿éÔ˶¯µÄ×î´ó¼ÓËÙ¶ÈΪ40m/s2 | D£® | µ¯»ÉµÄµ¯ÐÔÊÆÄÜ×î´óֵΪ0.7J |
10£®Èçͼ¼×Ëùʾ£¬Ò»Ð¡Îï¿é´Óˮƽת¶¯µÄ´«ËÍ´øµÄÓҲ໬ÉÏ´«ËÍ´ø£¬¹Ì¶¨ÔÚ´«ËÍ´øÓҶ˵ÄλÒÆ´«¸ÐÆ÷¼Ç¼ÁËСÎïµÄλÒÆxËæʱ¼ätµÄ±ä»¯¹ØϵÈçͼÒÒËùʾ£®ÒÑ֪ͼÏßÔÚÇ°3.0sÄÚΪ¶þ´Îº¯Êý£¬ÔÚ3.0s¡«4.5sÄÚΪһ´Îº¯Êý£¬È¡Ïò×óÔ˶¯µÄ·½ÏòΪÕý·½Ïò£¬´«ËÍ´øµÄËٶȱ£³Ö²»±ä£¬gÈ¡10m/s2£®ÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A£® | ´«ËÍ´øÑØ˳ʱÕë·½Ïòת¶¯ | |
B£® | ´«ËÍ´øÑØÄæʱÕë·½Ïòת¶¯ | |
C£® | ´«ËÍ´øµÄËٶȴóСΪ2m/s | |
D£® | СÎï¿éÓë´«ËÍ´ø¼äµÄ¶¯Ä¦²ÁÒòÊý¦Ì=0.2 |