ÌâÄ¿ÄÚÈÝ
16£®ÔÚ¡¶ÑéÖ¤»úеÄÜÊغ㶨ÂÉ¡·µÄʵÑéÖУ¬ÏÂÃæÁгöһЩʵÑé²½ÖèA£®ÓÃÌìƽ²â³öÖØÎïºÍ¼Ð×ÓµÄÖÊÁ¿£»
B£®ÏȽ«ÖØÎïÓëÖ½´øÁ¬½Ó£¬ÔÙ½«Ö½´ø´©¹ý´òµã¼ÆʱÆ÷£¬É϶ËÓÃÊÖÌá×Å£¬²¢ÇÒÈÃÖØÎï¿¿½ü´òµã¼ÆʱÆ÷£»
C£®´òµã¼ÆʱÆ÷½ÓÔÚѧÉúµçÔ´½»Á÷Êä³ö¶Ë£¬°ÑÊä³öµçѹµ÷ÖÁ6V £¨µçÔ´²»½Óͨ¡¢½»Á÷£©£»
D£®´òµã¼ÆʱÆ÷¹Ì¶¨ÔÚÖÃÓÚ×À±ßµÄÌú¼Ų̈ÉÏ£¬Ê¹Á½¸öÏÞλ¿×ÔÚͬһÊúÖ±ÏßÉÏ£»
E£®ÔÚÖ½´øÉÏÑ¡È¡¼¸¸öµã£¬½øÐвâÁ¿ºÍ¼Ç¼Êý¾Ý£»
F£®ÓÃÃë±í²â³öÖØÎïÏÂÂäµÄʱ¼ä£»
G£®½ÓͨµçÔ´´ý¼ÆʱÆ÷ÏìÉùÎȶ¨ºóÊÍ·ÅÖ½´ø£»
H£®ÇжϵçÔ´£»
I£®¸ü»»Ö½´ø£¬ÖØнøÐÐÁ½´Î£»
J£®ÔÚÈýÌõÖ½´øÖÐÑ¡³ö½ÏºÃµÄÒ»Ìõ£»
K£®½øÐмÆË㣬µÃ³ö½áÂÛ£¬Íê³ÉʵÑ鱨¸æ£»
L£®²ðϵ¼Ïߣ¬ÕûÀíÆ÷²Ä£®
ÒÔÉϲ½ÖèÖУ¬²»±ØÒªµÄÓÐAF£¬ÕýÈ·²½ÖèµÄºÏÀí˳ÐòÊÇDCBGHIIJEK£¨Ìîд×Öĸ£©
£¨2£©Ä³´ÎʵÑéÖÐÖÊÁ¿m=0.5kgµÄÖØ´¸×ÔÓÉÏÂÂ䣬¶ÔÓ¦Ö½´øÉÏ´ò³öÁËһϵÁÐ µÄµã£¬Èçͼ2Ëùʾ£¬ÏàÁÚ¼ÇÊýµãʱ¼ä¼ä¸ôΪ0.02s£¬²¢²â³ö¸÷µãµ½µÚÒ»¸öµãµÄ¾àÀ볤¶È£¬µ¥Î»ÊÇcm£¬gÈ¡9.8m/ss£¬Ç󣨱£Áô3λÓÐЧÊý×Ö£©£º
¢Ù´Ó´òϵãOµ½´òϼÇÊýµãBµÄ¹ý³ÌÖУ¬ÎïÌåÖØÁ¦ÊÆÄܵļõСÁ¿¡÷E=0.238J£¬¶¯ÄܵÄÔö¼ÓÁ¿¡÷EA=0.236J£®
¢ÚʵÑé½áÂÛÊÇÔÚÎó²îÔÊÐíµÄ·¶Î§ÄÚÖØÎï»úеÄÜÊغ㣮
·ÖÎö £¨1£©¸ù¾ÝʵÑéµÄÔÀíÒÔ¼°²Ù×÷ÖеÄ×¢ÒâÊÂÏîÈ·¶¨²»±ØÒªµÄ²½Ö裮°´ÕÕ×é×°Æ÷²Ä¡¢½øÐÐʵÑé¡¢Êý¾Ý´¦ÀíµÄ˳ÐòÅÅÁв½Ö裮
£¨2£©¸ù¾ÝϽµµÄ¸ß¶ÈÇó³öÖØÁ¦ÊÆÄܵļõСÁ¿£¬¸ù¾Ýij¶Îʱ¼äÄÚµÄƽ¾ùËٶȵÈÓÚÖмäʱ¿ÌµÄ˲ʱËÙ¶ÈÇó³öBµãµÄËٶȣ¬´Ó¶øµÃ³ö¶¯ÄܵÄÔö¼ÓÁ¿£®
½â´ð ½â£º£¨1£©¸ÃʵÑéÑéÖ¤¶¯ÄܵÄÔö¼ÓÁ¿ºÍÖØÁ¦ÊÆÄܵļõСÁ¿ÊÇ·ñÏàµÈ£¬Á½¶Ë¶¼ÓÐÖÊÁ¿£¬¿ÉÒÔԼȥ£¬ËùÒÔ²»ÐèÒª²âÁ¿ÖØÎïºÍ¼Ð×ÓµÄÖÊÁ¿£»ÖØÎïÏÂÂäµÄʱ¼äÓÉ´òµã¼ÆʱÆ÷¿ÉÒԵóö£¬²»ÐèÒªÓÃÃë±í²âÁ¿£¬¹Ê²»ÐèÒªµÄ²Ù×÷²½ÖèΪ£ºAF£®
ʵÑéʱÏÈ×é×°Æ÷²Ä£¬Ë³ÐòΪ£ºDCB£¬È»ºó½øÐÐʵÑ飬˳ÐòΪ£ºGHI£¬×îºóÊý¾Ý´¦Àí£¬Ë³ÐòΪ£ºJEK£¬ËùÒÔ²Ù×÷²½Öè˳ÐòΪ£ºDCBGHIIJEK£®
£¨2£©¢Ù´Ó´òϵãOµ½´òϼÇÊýµãBµÄ¹ý³ÌÖУ¬ÎïÌåÖØÁ¦ÊÆÄܵļõСÁ¿Îªmgh=0.5¡Á9.8¡Á4.86¡Á10-2J=0.238J£¬BµãµÄ˲ʱËÙ¶È${v}_{B}=\frac{{x}_{AC}}{2T}=\frac{£¨7.02-3.13£©¡Á1{0}^{-2}}{0.04}$m/s=0.9725m/s£¬Ôò¶¯ÄܵÄÔö¼ÓÁ¿Îª$\frac{1}{2}m{{v}_{B}}^{2}=\frac{1}{2}¡Á0.5¡Á0.972{5}^{2}$¡Ö0.236J£®
¢ÚʵÑé½áÂÛÊÇÔÚÎó²îÔÊÐíµÄ·¶Î§ÄÚÖØÎï»úеÄÜÊغ㣮
¹Ê´ð°¸Îª£ºAF£¬DCBGHIIJEK£¬£¨2£©¢Ù0.238£¬0.236£¬¢ÚÔÚÎó²îÔÊÐíµÄ·¶Î§ÄÚÖØÎï»úеÄÜÊغ㣮
µãÆÀ ½â¾ö±¾ÌâµÄ¹Ø¼üÕÆÎÕÖ½´øµÄ´¦Àí£¬»áͨ¹ýÖ½´øÇó½â˲ʱËٶȣ¬´Ó¶øµÃ³ö¶¯ÄܵÄÔö¼ÓÁ¿£¬»á¸ù¾ÝϽµµÄ¸ß¶ÈÇó½âÖØÁ¦ÊÆÄܵļõСÁ¿£®
A£® | 뱵İëË¥ÆÚΪ3.8Ì죬ÈôÈ¡80¸öë±Ô×Ӻˣ¬¾7.6Ììºó¾ÍÒ»¶¨Ê£ÏÂ20¸öë±Ô×ÓºËÁË | |
B£® | Ó˺Ë${\;}_{92}^{238}$UË¥±äΪǦºËµÄ¹ý³ÌÖУ¬Òª¾¹ý8´Î¦ÁË¥±äºÍ6´Î¦ÂË¥±ä | |
C£® | ¶ÔÓÚͬÖÖ½ðÊô²úÉú¹âµçЧӦʱÒݳö¹âµç×ÓµÄ×î´ó³õ¶¯ÄÜEkÓëÕÕÉä¹âµÄîlÂʳÉÏßÐÔ¹Øϵ | |
D£® | Ò»¸ö´¦ÓÚn=5Äܼ¶Ì¬µÄÇâÔ×Ó£¬×Ô·¢ÏòµÍÄܼ¶Ô¾Ç¨µÄ¹ý³ÌÖÐÄܹ»·øÉä10ÖÖ²»Í¬ÆµÂʵĵç´Å²¨ | |
E£® | ±È½áºÏÄÜÔ½´ó£¬Ô×ÓÖкË×Ó½áºÏµÄÔ½Àι̣¬Ô×ÓºËÔ½Îȶ¨ |
A£® | ÕâÁв¨µÄ²¨ËÙΪ16.7 m/s | |
B£® | ÕâÁв¨µÄÖÜÆÚΪ0.8 s | |
C£® | ÖʵãcÔÚÕâ¶Îʱ¼äÄÚͨ¹ýµÄ·³ÌÒ»¶¨µÈÓÚ30 cm | |
D£® | ´Ót=0ʱ¿Ì¿ªÊ¼¼Æʱ£¬ÖʵãaµÚÒ»´Îµ½´ïƽºâλÖÃʱ£¬Ç¡ºÃÊÇ$\frac{1}{3}$sÕâ¸öʱ¿Ì |
A£® | ±äѹÆ÷T1µÄÔÑÊý±Èn1£ºn2=5£º1 | B£® | ÊäµçÏßÉϵĵçÁ÷Ϊ50A | ||
C£® | ±äѹÆ÷T2µÄÔÑÊý±Èn3£ºn4=190£º22 | D£® | ÊäµçÏßÉÏËðʧµÄµç¹¦ÂÊΪ100W |
A£® | ¸Ã²¨µÄ²¨ËÙΪ60cm/s | |
B£® | ²¨Ô´S¿ªÊ¼Õñ¶¯µÄ·½ÏòÏòÏ | |
C£® | ͼÖеÄÖʵãQÔÚtʱ¿Ì´¦ÔÚ²¨¹È | |
D£® | ÔÚ0ÖÁ1.0sʱ¼äÄÚÖʵãPÔ˶¯µÄ·³ÌΪ70cm | |
E£® | ²¨Ô´SÔÚ2.15sʱλÒÆÊÇ5cm |