ÌâÄ¿ÄÚÈÝ
10£®ÏÂÁÐÐðÊö´íÎóµÄÊÇ£¨¡¡¡¡£©A£® | ¡°ÖØÐÄ¡±¡¢¡°ºÏÁ¦ºÍ·ÖÁ¦¡±¡¢¡°×ܵç×衱µÈ¸ÅÄÌåÏÖÁ˵ÈЧÌæ´úµÄÎïÀí˼Ïë | |
B£® | °²ÅàÓÉ»·ÐεçÁ÷ºÍÌõÐδÅÌú´Å³¡µÄÏàËÆÐÔ£¬Ìá³ö·Ö×ÓµçÁ÷¼Ù˵£¬½âÊÍÁË´ÅÏÖÏóµÄ±¾ÖÊ | |
C£® | ×îÏÈÔ¤ÑÔÁËÒýÁ¦²¨µÄ¿Æѧ¼ÒÊÇ°®Òò˹̹ | |
D£® | ÓñÈÖµ·¨¶¨ÒåµÄÎïÀíÁ¿ÔÚÎïÀíѧÖÐÕ¼ÓÐÏ൱´óµÄ±ÈÀý£¬ÀýÈçµç³¡Ç¿¶ÈE=$\frac{F}{q}$£¬µçÈÝC=$\frac{Q}{U}$£¬¼ÓËÙ¶Èa=$\frac{F}{m}$¶¼ÊDzÉÓñÈÖµ·¨¶¨ÒåµÄ |
·ÖÎö ÖØÐÄ¡¢ºÏÁ¦µÈ¸ÅÄîµÄ½¨Á¢¶¼ÌåÏÖÁ˵ÈЧÌæ´úµÄ˼Ï룬¼ÓËÙ¶Èa=$\frac{F}{m}$²»ÊDZÈÖµ¶¨Òå·¨£¬ÖªµÀÖøÃû¿Æѧ¼ÒµÄÖØÒª¹±Ï×£¬Êǽâ´ðÀàËÆÎÊÌâµÄ¹Ø¼ü£®
½â´ð ½â£ºA¡¢ÖØÐÄÊÇÎïÌå¸÷²¿·ÖËùÊÜÖØÁ¦µÄ×÷Óõ㡢ºÏÁ¦ºÍ·ÖÁ¦µÈЧ¡¢×ܵç×èºÍ¸÷¸öµç×èµÈЧ£¬¶¼²ÉÓÃÁ˵ÈЧÌæ´úµÄ˼Ï룬¹ÊAÕýÈ·£®
B¡¢°²ÅàÓÉ»·ÐεçÁ÷ºÍÌõÐδÅÌú´Å³¡µÄÏàËÆÐÔ£¬Ìá³ö·Ö×ÓµçÁ÷¼Ù˵£¬½âÊÍÁË´ÅÏÖÏóµÄµç±¾ÖÊ£¬¹ÊBÕýÈ·£®
C¡¢×îÏÈÓïÑÔÁËÒýÁ¦²¨µÄ¿Æѧ¼ÒÊÇ°®Òò˹̹£®¹ÊCÕýÈ·£®
D¡¢¼ÓËÙ¶Èa=$\frac{F}{m}$ÊÇÅ£¶ÙµÚ¶þ¶¨Âɵıí´ïʽ£¬²»ÊDzÉÓñÈÖµ·¨¶¨Ò壬¹ÊD´íÎó£®
±¾ÌâÑ¡´íÎóµÄ£¬¹ÊÑ¡£ºD
µãÆÀ ¶ÔÓÚÎïÀíѧÉÏÖøÃû¿Æѧ¼Ò¡¢ÖØÒªÀíÂۺ;µäѧ˵Ҫ¼ÇÀΣ¬²»ÒªÕŹÚÀî´÷£®ÕâÒ²¸ß¿¼¿¼²éÄÚÈÝÖ®Ò»£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿
20£®Ä³³Ë¿Í³Ë×ø¸ßÌúʱ£¬¿´µ½Ìú·ÅԵĽ¨ÖþÎï¿ìËٵغóÍË£¬ËûËùÑ¡µÄ²Î¿¼ÏµÊÇ£¨¡¡¡¡£©
A£® | µØÃæ | B£® | Ìú¹ì | C£® | Áгµ | D£® | Ìú·ÅÔµÄÊ÷ľ |
1£®Ë®Æ½µØÃæÉÏÁ½¸öÖʵã¼×ºÍÒÒ£¬Í¬Ê±ÓÉͬһµØµãÑØͬһ·½Ïò×÷Ö±ÏßÔ˶¯£¬ËüÃǵÄv-tͼÏßÈçͼËùʾ£¬ÔÚ0¡«4sÄÚÏÂÁÐÅжÏÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A£® | 2SÄ©ÒҺͼ×ÏàÓö | |
B£® | 2sÇ°¼×±ÈÒÒËٶȴó£¬2sºóÒұȼ×Ëٶȴó | |
C£® | ÔÚµÚ4sÄÚ£¬¼×µÄƽ¾ùËٶȵÈÓÚÒÒµÄƽ¾ùËÙ¶È | |
D£® | ÔÚµÚ4sÄ©ÒÒ×·ÉÏ¼× |
18£®ÈçͼËùʾ£¬ÖÊÁ¿¾ùΪmµÄA¡¢BÁ½¸öСÇò·ÅÔڹ⻬µÄˮƽÃæÉÏ£¬Ö®¼äÓÃÒ»ÇáÖʵ¯»ÉÏàÁ¬£¬AÇò½ô¿¿Ç½±Ú£¬ÔÚºãÁ¦F×÷ÓÃÏÂÁ½Çò´¦ÓÚ¾²Ö¹×´Ì¬£¬ÏÖͻȻ³·È¥Á¦F£¬ÔÚ³·È¥FµÄ˲¼äÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A£® | AÇòµÄ¼ÓËÙ¶ÈΪ$\frac{F}{2m}$ | B£® | AÇòµÄ¼ÓËÙ¶ÈΪÁã | ||
C£® | BÇòµÄ¼ÓËÙ¶ÈΪ$\frac{F}{2m}$ | D£® | BÇòµÄ¼ÓËÙ¶ÈΪ$\frac{F}{m}$ |
15£®¹ØÓÚʵÑé¡°ÓÃÓÍĤ·¨¹À²â·Ö×Ó´óС¡±£¬ÒÔÏÂ˵·¨ÕýÈ·µÄÊÇ £¨¡¡¡¡£©
A£® | ΪÁË·ÀÖ¹¾Æ¾«µÄ»Ó·¢£¬ÅäÖõÄÓÍËá¾Æ¾«ÈÜÒº²»Äܳ¤Ê±¼ä·ÅÖà | |
B£® | ÓÃ×¢ÉäÆ÷ÍùË®ÃæÉϵÎÒ»µÎÓÍËá¾Æ¾«ÈÜÒººó£¬Ó¦Á¢¼´½«ÓÍĤµÄÐÎ×´ÃèÏÂÀ´ | |
C£® | ´¦ÀíÊý¾Ýʱ½«Ò»µÎÓÍËá¾Æ¾«ÈÜÒºµÄÌå»ý³ýÒÔÓÍĤÃæ»ý¾ÍµÃµ½ÁËÓÍËá·Ö×ÓµÄÖ±¾¶ | |
D£® | ÈôʵÑéÖÐÈöµÄðò×Ó·Û¹ý¶à£¬Ôò¼ÆËãµÃµ½µÄÓÍËá·Ö×ÓµÄÖ±¾¶½«Æ«´ó |
2£®ÈçͼËùʾ£¬R1¡¢R2¡¢R3ΪÍêÈ«ÏàͬµÄ±ê×¼µç×裮¼×¡¢ÒÒÁ½ÖÖÇé¿öϵç×èR2¡¢R3µÄ¹¦ÂʾùΪP£¬ÇÒÔÑÊý±Èn1£ºn2¾ùΪ4£ºl£¬Ôò£¨¡¡¡¡£©
A£® | ͼ¼×ÖÐR1µÄ¹¦ÂÊ2P | B£® | ͼ¼×ÖÐR1µÄ¹¦ÂÊ$\frac{P}{16}$ | ||
C£® | ͼÒÒÖÐR1µÄ¹¦ÂÊ16P | D£® | ͼÒÒÖÐR1µÄ¹¦ÂÊ$\frac{P}{4}$ |
7£®ÔÚÒ»´Î½»Í¨Ê¹ÊÖУ¬½»Í¨¾¯²ì²âÁ¿³öÕØʳµÁ¾µÄɲ³µºÛ¼£ÊÇ16m£¬¸Ã³µÁ¾×î´óɲ³µËÙ¶ÈÊÇ8m/s2£¬¸Ã·¶ÎµÄÏÞËÙ60km/h£¬Ôò¸Ã³µÊÇ·ñ³¬ËÙ£¨¡¡¡¡£©
A£® | ³¬ËÙ | B£® | ²»³¬ËÙ | C£® | ¸ÕºÃÊÇ60km/h | D£® | ÎÞ·¨ÅÐ¶Ï |