ÌâÄ¿ÄÚÈÝ
7£®ÔÚ×ö¡°ÓÃÓÍĤ·¨¹À²â·Ö×ӵĴóС¡±ÊµÑéʱ£¬Ã¿104 mL ÓÍËá¾Æ¾«ÈÜÒºÖÐÓд¿ÓÍËá6mL£®ÓÃ×¢ÉäÆ÷²âµÃ75µÎ ÕâÑùµÄÈÜҺΪ1mL£®°Ñ1µÎÕâÑùµÄÈÜÒºµÎÈëʢˮµÄdzÅÌÀ°Ñ²£Á§°å¸ÇÔÚdzÅÌÉϲ¢Ã軳öÓÍËáĤÂÖÀª£¬µÃµ½ÓÍËáĤµÄÃæ»ýԼΪ1.08¡Á10-2 m2£»£¨¼ÆËã½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©£¨1£©1µÎÓÍËá¾Æ¾«ÈÜÒºÖк¬Óд¿ÓÍËáµÄÌå»ýΪ8.0¡Á10-12m3£»
£¨2£©°´ÒÔÉÏÊý¾Ý¹ÀËã³öÓÍËá·Ö×ÓµÄÖ±¾¶Îª7.4¡Á10-10m£»
£¨3£©ÎªÁ˼õСʵÑéÎó²î£¬ÏÂÁз½·¨¿ÉÐеÄÊÇD
A£®¾Æ¾«ÈÜÒºÅäÖƺó²»Òª³¤Ê±¼ä·ÅÖã¬ÒÔÃâŨ¶È¸Ä±ä
B£®ÎªÁËʹðò×Ó·Û¾ùÔȸ²¸ÇË®Ã棬¿ÉÏȽ«ÊÊÁ¿µÄðò?·Û·ÅÔÚdzÅÌÖУ¬ÔÙµ¹ÈëË®
C£®µÎ?ÓÍËá¾Æ¾«ÈÜÒººó£¬Ó¦?¼´ÃèÏÂÓÍËáĤµÄÐÎ×´£¬·À?ÓÍËáĤÐÎ×´·¢?¸Ä±ä
D£®Ç³ÅÌÖеÄ?ÀëÅÌ?¾àÀëÓ¦½Ï?£¬²¢Òª?ƽ·ÅÖÃdzÅÌ£¬ÒÔ±ã׼ȷµØ»³ö±¡Ä¤µÄÐÎ×´£®
·ÖÎö £¨1£©¸ù¾Ý75µÎÈÜÒºµÄÌå»ýµÃ³ö1µÎÈÜÒºµÄÌå»ý£¬½áºÏÓÍËá¾Æ¾«ÈÜÒºÖд¿ÓÍËáµÄ±ÈÀýµÃ³ö1µÎÓÍËá¾Æ¾«ÈÜÒºÖд¿ÓÍËáµÄÌå»ý£®
£¨2£©¸ù¾Ýd=$\frac{V}{S}$Çó³öÓÍËá·Ö×ÓµÄÖ±¾¶´óС£®
£¨3£©¸ù¾ÝʵÑéµÄÔÀíÒÔ¼°×¢ÒâÊÂÏîÈ·¶¨¼õСÎó²îµÄÕýÈ··½·¨£®
½â´ð ½â£º£¨1£©1µÎÓÍËá¾Æ¾«ÈÜÒºÖк¬Óд¿ÓÍËáµÄÌå»ý$V=\frac{1}{75}¡Á\frac{6}{1{0}^{4}}mL$=8¡Á10-6mL=8.0¡Á10-12m3£®
£¨2£©ÓÍËá·Ö×ÓµÄÖ±¾¶d=$\frac{V}{S}=\frac{8.0¡Á1{0}^{-12}}{1.08¡Á1{0}^{-2}}m=7.4¡Á1{0}^{-10}m$£®
£¨3£©A¡¢ÓÍËá¾Æ¾«ÈÜÒº³¤Ê±¼ä·ÅÖ㬾ƾ«»Ó·¢Ê¹ÈÜÒºµÄŨ¶È±ä´ó£¬Ôò»áµ¼Ö¼ÆËã½á¹ûƫС£¬¹ÊA´íÎó£®
B¡¢ÊµÑéʱÍùdzÅÌÀïµ¹ÈëË®£¬´ýË®ÃæÎȶ¨ºó½«ÊÊÁ¿µÄðò×Ó·Û¾ùÔȵØÉ¢ÔÚË®ÃæÉÏ£¬¹ÊB´íÎó£®
C¡¢µÎ?ÓÍËá¾Æ¾«ÈÜÒººó£¬µÈÓÍĤÎȶ¨ºó£¬ÔÙÃèÏÂÓÍËáĤµÄÐÎ×´£¬¹ÊC´íÎó£®
D¡¢Ç³ÅÌÖеÄ?ÀëÅÌ?¾àÀëÓ¦½Ï?£¬²¢Òª?ƽ·ÅÖÃdzÅÌ£¬ÒÔ±ã׼ȷµØ»³ö±¡Ä¤µÄÐÎ×´£¬¹ÊDÕýÈ·£®
¹ÊÑ¡£ºD£®
¹Ê´ð°¸Îª£º£¨1£©8.0¡Á10-12£¬£¨2£©7.4¡Á10-10£¬£¨3£©D£®
µãÆÀ ±¾ÊµÑéµÄÄ£ÐÍÊDz»¿¼ÂÇÓÍËá·Ö×Ó¼äµÄ¿Õ϶£¬²ÉÓùÀËãµÄ·½·¨ÇóÃæ»ý£¬¿Ï¶¨´æÔÚÎó²î£¬µ«±¾ÊµÑéÖ»ÒªÇó¹ÀËã·Ö×Ó´óС£¬ÊýÁ¿¼¶·ûºÏÒªÇó¾ÍÐÐÁË£®
A£® | ¸ÃÐÐÐDZíÃæµÄÖØÁ¦¼ÓËÙ¶ÈÊÇ8m/s2 | |
B£® | ÎïÌåÂäµ½ÐÐÐDZíÃæʱµÄËÙ¶ÈÊÇ25m/s | |
C£® | ÎïÌåÂäµ½ÐÐÐDZíÃæʱµÄËÙ¶ÈÊÇ20m/s | |
D£® | ¸ÃÐÐÐǵĵÚÒ»ÓîÖæËÙ¶ÈÊÇ6.4¡Á103m/s |
A£® | ´«²¥·½ÏòÑØ+x·½Ïò´«²¥ | B£® | ²¨ËÙΪ16m/s | ||
C£® | P´¦ÖʵãÕñ¶¯ÆµÂÊΪ1Hz | D£® | P´¦ÖʵãÔÚ5 sÄÚ·³ÌΪ10m | ||
E£® | P´¦ÖʵãÔÚ5 sÄÚµÄλÒÆΪ0.5m |
A£® | µçѹ±íµÄ¶ÁÊýΪ4V | |
B£® | µçÁ÷±í¶ÁÊý0.5A | |
C£® | 1ÃëÄÚÁ÷¹ýСµÆÅݵĵçÁ÷·½Ïò¸Ä±ä25´Î | |
D£® | ÏßȦÔÚt=1¡Á10-2ʱ´ÅͨÁ¿Îª0 |
A£® | ´¦ÓÚ»ù̬µÄÇâÔ×ÓÎüÊÕÄÜÁ¿Îª1.51eVµÄ¹â×ÓºóÄÜԾǨµ½µÚÈýÄܼ¶ | |
B£® | ´¦ÓÚµÚ¶þÄܼ¶µÄÇâÔ×Ó²»ÄÜÎüÊÕÄÜÁ¿Îª3.5eVµÄ¹â? | |
C£® | ´¦ÓÚµÚËÄÄܼ¶µÄ´óÁ¿ÇâÔ×ÓÏòÏÂԾǨʱ×î¶àÄܹ»²úÉú3ÖÖ²»Í¬ÆµÂʵĹâ | |
D£® | ´¦ÓÚµÚËÄÄܼ¶µÄÒ»¸öÇâÔ×ÓÏòµÍÄܼ¶Ô¾Ç¨·¢³öµÄËùÓйâÕÕÉäÒݳö¹¦Îª?0.65eVµÄ½ðÊôʱ¾ùÄÜ·¢Éú¹âµçЧӦ |
A£® | 1£º1 | B£® | 1£º2 | C£® | 1£º4 | D£® | 4£º1 |
t/¡æ | 30.0 | 40.0 | 50.0 | 60.0 | 70.0 | 80.0 |
R1/¦¸ | 199.5 | 145.4 | 108.1 | 81.8 | 62.9 | 49.1 |
Ϊʹ¸Ã×°ÖÃʵÏÖ¶Ô30¡«80¡æÖ®¼äÈÎһζȵĿØÖÆ£¬µçÔ´EӦѡÓÃE2£¨Ñ¡Ìî¡°E1¡±»ò¡°E2¡±£©£¬»¬¶¯±ä×èÆ÷RӦѡÓÃR2£¨Ñ¡Ìî¡°R1¡±»ò¡°R2¡±£©£®
£¨2£©ÊµÑé·¢Ïֵ緲»¹¤×÷£®Ä³Í¬Ñ§ÎªÅŲéµç·¹ÊÕÏ£¬ÓöàÓõç±í²âÁ¿¸÷½Óµã¼äµÄµçѹ£¬ÔòÓ¦½«Èçͼ2ËùʾµÄÑ¡Ôñ¿ª¹ØÐýÖÁC£¨Ñ¡Ìî¡°A¡±¡¢¡°B¡±¡¢¡°C¡±»ò¡°D¡±£©
£¨3£©ºÏÉÏ¿ª¹ØS£¬Óõ÷½ÚºÃµÄ¶àÓõç±í½øÐÐÅŲ飬ÔÚͼ1ÖУ¬ÈôÖ»ÓÐb¡¢c¼ä¶Ï·£¬ÔòÓ¦·¢ÏÖ±í±Ê½ÓÈëa¡¢bʱָÕ벻ƫת£¨Ñ¡Ìƫת¡±»ò¡°²»Æ«×ª¡±£©£¬½ÓÈëa¡¢cʱָÕëƫת£¨Ñ¡Ìƫת¡±»ò¡°²»Æ«×ª¡±£©£®
£¨4£©Åųý¹ÊÕϺó£¬ÓûʹÏÎÌúÔÚÈÈÃôµç×èΪ50¡æʱ±»ÎüºÏ£¬ÏÂÁвÙ×÷²½ÖèÕýȷ˳ÐòÊǢݢܢڢۢ٣®£¨Ìîд¸÷²½ÖèÇ°µÄÐòºÅ£©
¢Ù½«ÈÈÃôµç×è½ÓÈëµç·
¢Ú¹Û²ìµ½¼ÌµçÆ÷µÄÏÎÌú±»ÎüºÏ
¢Û¶Ï¿ª¿ª¹Ø£¬½«µç×èÏä´Óµç·ÖÐÒƳý
¢ÜºÏÉÏ¿ª¹Ø£¬µ÷½Ú»¬¶¯±ä×èÆ÷µÄ×èÖµ
¢Ý¶Ï¿ª¿ª¹Ø£¬Óõç×èÏäÌæ»»ÈÈÃôµç×裬½«×èÖµµ÷ÖÁ108.1¦¸
A£® | $\frac{{v}_{0}}{g}$cot¦È | B£® | $\frac{{v}_{0}}{g}$tan¦È | C£® | $\frac{{v}_{0}}{g}$sin¦È | D£® | $\frac{{v}_{0}}{g}$cos¦È |