ijѹÁ¦¹ø½á¹¹ÈçͼËùʾ£¬¸ÇºÃÃÜ·â¹ø¸Ç£¬½«Ñ¹Á¦·§Ì×ÔÚ³öÆø¿×£¬¸øѹÁ¦¹ø¼ÓÈÈ£¬µ±¹øÄÚÆøÌåѹǿ´ïµ½Ò»¶¨ÖµÊ±£¬ÆøÌå¾Í°ÑѹÁ¦·§¶¥Æð¡£¼Ù¶¨ÔÚѹÁ¦·§¶¥Æðʱ£¬Í£Ö¹¼ÓÈÈ¡£

¢ÙÈô´Ëʱ¹øÄÚÆøÌåµÄÌå»ýΪV£¬Ä¦¶ûÌå»ýΪVo£¬°¢·ü¼ÓµÂÂÞ³£ÊýΪNA£¬Ð´³ö¹øÄÚÆøÌå·Ö×ÓÊýµÄ¹ÀËã±í´ïʽ¡£

¢Ú¼Ù¶¨ÔÚÒ»´Î·ÅÆø¹ý³ÌÖУ¬¹øÄÚÆøÌå¶ÔѹÁ¦·§¼°Íâ½ç×ö¹¦1£®5J£¬²¢ÏòÍâ½çÊÍ·ÅÁË2£®SJµÄÈÈÁ¿£¬¹øÄÚÔ­ÓÐÆøÌåµÄÄÚÄÜÈçºÎ±ä»¯£¿±ä»¯Á˶àÉÙ£¿

 

 

 

 

 

£¨1£©NA¡­£¨2£©¼õÉÙÁË4J

½âÎö:ÂÔ

 

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2007?ÄϾ©Ä£Ä⣩[Ñ¡ÐÞ3-3Ä£¿é]
ijѹÁ¦¹ø½á¹¹ÈçͼËùʾ£¬¸ÇºÃÃÜ·â¹ø¸Ç£¬½«Ñ¹Á¦·§Ì×ÔÚ³öÆø¿×£¬¸øѹÁ¦¹ø¼ÓÈÈ£¬µ±¹øÄÚÆøÌåѹǿ´ïµ½Ò»¶¨ÖµÊ±£¬ÆøÌå¾Í°ÑѹÁ¦·§¶¥Æ𣮼ٶ¨ÔÚѹÁ¦·§¶¥Æðʱ£¬Í£Ö¹¼ÓÈÈ£®
£¨1£©Èô´Ëʱ¹øÄÚÆøÌåµÄÌå»ýΪV£¬Ä¦¶ûÌå»ýΪV0£¬°¢·ü¼ÓµÂÂÞ³£ÊýΪNA£¬Ð´³ö¹øÄÚÆøÌå·Ö×ÓÊýµÄ¹ÀËã±í´ïʽ£®
£¨2£©¼Ù¶¨ÔÚÒ»´Î·ÅÆø¹ý³ÌÖУ¬¹øÄÚÆøÌå¶ÔѹÁ¦·§¼°Íâ½ç×ö¹¦1.5J£¬²¢ÏòÍâ½çÊÍ·ÅÁË2.5JµÄÈÈÁ¿£¬¹øÄÚÔ­ÓÐÆøÌåµÄÄÚÄÜÈçºÎ±ä»¯£¿±ä»¯Á˶àÉÙ£¿
£¨3£©ÈôÒÑ֪ij¸ßѹ¹øµÄѹÁ¦·§ÖÊÁ¿Îªm=0.1kg£¬ÅÅÆø¿×Ö±¾¶Îªd=0.3cm£¬Ôò¹øÄÚÆøÌåµÄѹǿ×î´ó¿É´ï¶àÉÙ£¿ÉèѹǿÿÔö¼Ó3.6¡Á103Pa£¬Ë®µÄ·ÐµãÏàÓ¦Ôö¼Ó1¡æ£¬Ôò¹øÄÚµÄ×î¸ßζȿɴï¶à¸ß£¿£¨Íâ½ç´óÆøѹǿp0=1.0¡Á105Pa£¬È¡g=10m/s2£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2009?Ðì»ãÇø¶þÄ££©Ä³Ñ¹Á¦¹ø½á¹¹ÈçͼËùʾ£¬¸ÇºÃÃÜ·â¹ø¸Ç£¬½«ÏÞѹ·§Ì×ÔÚ³öÆø¿×ÉÏ£¬µ±¹øÄÚÆøÌåѹǿ´ïµ½Ò»¶¨ÖµÊ±£¬ÆøÌå¾Í°ÑÏÞѹ·§¶¥Æð£®
£¨1£©ÈôѹÁ¦¹øÄÚµÄÆøÌåÌå»ýΪV£¬¸Ã״̬ÏÂÆøÌåµÄĦ¶ûÌå»ýΪV0£¬Ôò¹øÄÚÆøÌå·Ö×ÓÊýԼΪn=
VNA
V0
VNA
V0
£®£¨°¢·ü¼ÓµÂÂÞ³£ÊýΪNA£©
£¨2£©ÒÑÖª´óÆøѹǿpË溣°Î¸ß¶ÈHµÄ±ä»¯Âú×ãp=p0£¨1-aH£©£¬ÆäÖг£Êýa£¾0£¬p0Ϊº£Æ½Ãæ´¦´óÆøѹǿ£®¸ù¾Ý¸Ãʽ£¬ËµÃ÷ÔÚ²»Í¬º£°Î¸ß¶ÈʹÓÃѹÁ¦¹ø£¬·§Ãű»¶¥Æðʱ¹øÄÚÆøÌåµÄζÈËæן£°Î¸ß¶ÈµÄÔö¼Ó¶ø
½µµÍ
½µµÍ
£¨Ìî¡°Éý¸ß¡±¡¢¡°½µµÍ¡±»ò¡°²»±ä¡±£©£®
£¨3£©ÈôijʵÑéС×éÏëÀûÓÃÉÏʽÀ´¹ÀËãij´¦º£°Î¸ß¶È£¬º£Æ½Ãæ´¦´óÆøѹǿp0ºÍ³£Á¿a¾ùÒÑÖª£®¾ßÌå×ö·¨Îª£º½«Ò»×°ÓÐѹǿ´«¸ÐÆ÷µÄ¿ÕѹÁ¦¹ø´øµ½º£Æ½Ãæij´¦ºó£¬¸Ç½ô¹ø¸Ç£¬ÔÚ³öÆø¿×ÉÏÌ×ÉÏÏÞѹ·§£¬¶ÔѹÁ¦¹ø½øÐмÓÈÈ£¬µ±¼ÓÈȵ½ÏÞѹ·§Ç¡±»¶¥Æðʱ£¬Ñ¹Ç¿´«¸ÐÆ÷²âµÃ´Ëʱ¹øÄÚÆøÌåѹǿΪp1£®È»ºóС×é³ÉԱЯ´ø¸ÃѹÁ¦¹øÉÏÉýµ½Ä³º£°Î¸ß¶ÈH´¦£¬ÔٴζÔѹÁ¦¹ø½øÐмÓÈÈ£¬µ±¼ÓÈȵ½ÏÞѹ·§Ç¡±»¶¥Æðʱ£¬Ñ¹Ç¿´«¸ÐÆ÷²âµÃ´Ëʱ¹øÄÚÆøÌåѹǿΪp2£®¸ù¾ÝÕâЩÊý¾Ý£¬¿ÉËãµÃ¸Ã´¦º£°Î¸ß¶ÈH=
p1-p2
ap0
p1-p2
ap0
£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

¾«Ó¢¼Ò½ÌÍøijѹÁ¦¹ø½á¹¹ÈçͼËùʾ£¬¸ÇºÃÃÜ·â¹ø¸Ç£¬½«Ñ¹Á¦·§Ì×ÔÚ³öÆø¿×ÉÏ£¬¸øѹÁ¦¹ø¼ÓÈÈ£¬µ±¹øÄÚÆøÌåѹǿ´ïµ½Ò»¶¨ÖµÊ±£¬ÆøÌå¾Í°ÑѹÁ¦·§¶¥Æð£®ÒÑÖª´óÆøѹǿPË溣°Î¸ß¶ÈHµÄ±ä»¯Âú×ãP=P0£¨1-aH£©£¬ÆäÖг£Êýa£¾0£¬Ë溣°Î¸ß¶ÈHµÄÔö´ó£¬´óÆøѹǿP
 
£¨Ìî¡°Ôö´ó¡±¡¢¡°¼õС¡±»ò¡°²»±ä¡±£©£¬·§Ãű»¶¥ Æðʱ¹øÄÚÆøÌåѹǿ
 
£¨Ìî¡°Ôö´ó¡±¡¢¡°¼õС¡±»ò¡°²»±ä¡±£©£¬½áºÏ²éÀí¶¨ÂÉ·ÖÎö¿ÉÖª£¬ÔÚ²»Í¬º£°Î¸ß¶ÈʹÓÃѹÁ¦¹ø£¬·§Ãű»¶¥Æðʱ¹øÄÚÆøÌåµÄζÈËæן£°Î¸ß¶ÈµÄÔö¼Ó¶ø
 
£®£¨Ìî¡°Éý¸ß¡±¡¢¡°½µµÍ¡±»ò¡°²»±ä¡±£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨07Äêɽ¶«¾í£©£¨12·Ö£©Ä³Ñ¹Á¦¹ø½á¹¹ÈçͼËùʾ¡£¸ÇºÃÃÜ·â¹ø¸Ç£¬½«Ñ¹Á¦·§Ì×ÔÚ³öÆø¿×ÉÏ£¬¸øѹÁ¦¹ø¼ÓÈÈ£¬µ±¹øÄÚÆøÌåѹǿ´ïµ½Ò»¶¨ÖµÊ±£¬ÆøÌå¾Í°ÑѹÁ¦·§¶¥Æð¡£¼Ù¶¨ÔÚѹÁ¦·§±»¶¥Æðʱ£¬Í£Ö¹¼ÓÈÈ¡£

£¨1£©Èô´Ëʱ¹øÄÚÆøÌåµÄÌå»ýΪV£¬Ä¦¶ûÌå»ýΪV0£¬°¢·ü¼ÓµÂÂÞ³£ÊýΪNA£¬Ð´³ö¹øÄÚÆøÌå·Ö×ÓÊýµÄ¹ÀËã±í´ïʽ¡£

£¨2£©¼Ù¶¨ÔÚÒ»´Î·ÅÆø¹ý³ÌÖУ¬¹øÄÚÆøÌå¶ÔѹÁ¦·§¼°Íâ½ç×ö¹¦1J,²¢ÏòÍâ½çÊÍ·ÅÁË2JµÄÈÈÁ¿¡£¹øÄÚÔ­ÓÐÆøÌåµÄÄÚÄÜÈçºÎ±ä»¯£¿±ä»¯Á˶àÉÙ£¿

£¨3£©ÒÑÖª´óÆøѹǿPË溣°Î¸ß¶ÈHµÄ±ä»¯Âú×ãP=P0£¨1-¦ÁH£©£¬ÆäÖг£Êý¦Á£¾0¡£½áºÏÆøÌ嶨Âɶ¨ÐÔ·ÖÎöÔÚ²»Í¬µÄº£°Î¸ß¶ÈʹÓÃѹÁ¦¹ø£¬µ±Ñ¹Á¦·§±»¶¥Æðʱ¹øÄÚÆøÌåµÄζÈÓкβ»Í¬¡£

 

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ijѹÁ¦¹ø½á¹¹ÈçͼËùʾ¡£¸ÇºÃÃÜ·â¹ø¸Ç£¬½«Ñ¹Á¦·§Ì×ÔÚ³öÆø¿×ÉÏ£¬¸øѹÁ¦¹ø¼ÓÈÈ£¬µ±¹øÄÚÆøÌåѹǿ´ïµ½Ò»¶¨ÖµÊ±£¬ÆøÌå¾Í°ÑѹÁ¦·§¶¥Æð¡£¼Ù¶¨ÔÚѹÁ¦·§±»¶¥Æðʱ£¬Í£Ö¹¼ÓÈÈ¡£

£¨1£©Èô´Ëʱ¹øÄÚÆøÌåµÄÌå»ýΪV£¬Ä¦¶ûÌå»ýΪV0£¬°¢·ü¼ÓµÂÂÞ³£ÊýΪNA£¬Ð´³ö¹øÄÚÆøÌå·Ö×ÓÊýµÄ¹ÀËã±í´ïʽ¡£

£¨2£©¼Ù¶¨ÔÚÒ»´Î·ÅÆø¹ý³ÌÖУ¬¹øÄÚÆøÌå¶ÔѹÁ¦·§¼°Íâ½ç×ö¹¦1 J,²¢ÏòÍâ½çÊÍ·ÅÁË2 JµÄÈÈÁ¿¡£¹øÄÚÔ­ÓÐÆøÌåµÄÄÚÄÜÈçºÎ±ä»¯£¿±ä»¯Á˶àÉÙ£¿

£¨3£©ÒÑÖª´óÆøѹǿPË溣°Î¸ß¶ÈHµÄ±ä»¯Âú×ãP£½P0£¨1£­¦ÁH£©£¬ÆäÖг£Êý¦Á£¾0¡£½áºÏÆøÌ嶨Âɶ¨ÐÔ·ÖÎöÔÚ²»Í¬µÄº£°Î¸ß¶ÈʹÓÃѹÁ¦¹ø£¬µ±Ñ¹Á¦·§±»¶¥Æðʱ¹øÄÚÆøÌåµÄζÈÓкβ»Í¬¡£

 

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸