11£®ÈçͼËùʾÊÇÎÒ¹úÄϺ£½¢¶ÓDZͧ£¬ËüË®ÏÂËÙ¶ÈΪ20½Ú£¬×î´óÏÂDZÉî¶ÈΪ300m£®Ä³´ÎÔÚÄϺ£Ö´ÐÐÈÎÎñʱλÓÚË®ÃæÏÂh=150m´¦£¬Í§ÉÏÓÐÒ»¸öÈÝ»ýV1=2m3µÄÖüÆø¸ÖͲ£¬Í²ÄÚÖüÓÐѹËõ¿ÕÆø£¬Æäѹǿp1=200atm£¬Ã¿´Î½«Í²ÄÚÒ»²¿·Ö¿ÕÆøѹÈëË®Ï䣨ˮÏäÓÐÅÅË®¿×Ó뺣ˮÏàÁ¬£©£¬Åųöº£Ë®¡÷V=0.9m3£¬µ±ÖüÆø¸ÖͲÖеÄѹǿ½µµÍµ½p2=20atmʱ£¬ÐèÖØгäÆø£®ÉèDZͧ±£³ÖË®ÃæÏÂÉî¶È²»±ä£¬ÔÚÅÅË®¹ý³ÌÖÐÆøÌåµÄζȲ»±ä£¬Ë®ÃæÉÏ¿ÕÆøѹǿp0=1atm£¬È¡º£Ë®ÃܶȦÑ=1¡Á103kg/m3£¬g=10m/s2£¬1atm=1¡Á105Pa£®Çó¸ÃÖüÆø¸ÖͲÖØгäÆøÇ°¿É½«Í²ÄÚ¿ÕÆøѹÈëË®ÏäµÄ´ÎÊý£®

·ÖÎö ¸ù¾Ý²£Òâ¶ú¶¨ÂÉ£¬Çó³öÖØгäÆøÇ°ÓÃÈ¥µÄÆøÌåÔÚ${p}_{2}^{\;}$ѹǿϵÄÌå»ý£¬Çó³öÏÂDZÉî¶È300mµÄѹǿ${p}_{4}^{\;}$£¬¸ù¾Ý²£Òâ¶ú¶¨ÂÉÇó³öÓÃÈ¥µÄÆøÌåÔÚË®ÏäѹǿΪ${p}_{4}^{\;}$µÄÌå»ý${V}_{4}^{\;}$£¬×îºóÇó³ö½«Í²ÄÚ¿ÕÆøѹÈëË®ÏäµÄ´ÎÊý£®

½â´ð ½â£ºÉèÖüÆø¸ÖͲÄÚÆøÌåµÄѹǿ±äΪ${p}_{2}^{\;}$ʱ£¬Ìå»ýΪ${V}_{2}^{\;}$
¸ù¾Ý²£Òâ¶ú¶¨ÂɵÃ${p}_{1}^{\;}{V}_{1}^{\;}={p}_{2}^{\;}{V}_{2}^{\;}$
ÖØгäÆøÇ°£¬ÓÃÈ¥µÄÆøÌåÔÚ${p}_{2}^{\;}$ѹǿϵÄÌå»ýΪ
${V}_{3}^{\;}={V}_{2}^{\;}-{V}_{1}^{\;}$
ÉèÓÃÈ¥µÄÆøÌåÔÚË®ÏäѹǿΪ${p}_{4}^{\;}$ʱµÄÌå»ýΪ${V}_{4}^{\;}$£¬ÔòÓÐ
${p}_{2}^{\;}{V}_{3}^{\;}={p}_{4}^{\;}{V}_{4}^{\;}$
ÆäÖÐ${p}_{4}^{\;}={p}_{0}^{\;}+\frac{¦Ñgh}{1¡Á1{0}_{\;}^{3}}=16atm$
ÔòѹÈëË®Ïä´ÎÊý$N=\frac{{V}_{4}^{\;}}{¡÷V}$
½âµÃN=25
´ð£º¸ÃÖüÆø¸ÖͲÖØгäÆøÇ°¿É½«Í²ÄÚ¿ÕÆøѹÈëË®ÏäµÄ´ÎÊý25´Î£®

µãÆÀ ±¾ÌâÖ÷Òª¿¼²éÁ˲£Òâ¶ú¶¨ÂɵÄÓ¦Óã¬×¢ÒâÓÃÈ¥µÄÆøÌåµÄÌå»ýת»¯ÎªÍ¬Ò»Ñ¹Ç¿ÏµÄÌå»ý½øÐбȽϣ¬ÕâÊDZ¾ÌâµÄ¹Ø¼ü£®

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÊµÑéÌâ

1£®Ä³ÊµÑéС×éʹÓÃÈçͼ1ËùʾµÄ×°ÖÃÀ´ÑéÖ¤¡°»úеÄÜÊغ㶨ÂÉ¡±£®

£¨1£©¹ØÓÚ±¾ÊµÑéµÄÐðÊö£¬ÕýÈ·µÄÓÐA£®
A£®´òµã¼ÆʱÆ÷°²×°Ê±ÒªÊ¹Á½ÏÞλ¿×λÓÚͬһÊúÖ±ÏßÉϲ¢°²×°Îȶ¨£¬ÒÔ¼õСֽ´øÏÂÂä¹ý³ÌÖÐÊܵ½µÄ×èÁ¦
B£®ÐèÓÃÌìƽ²â³öÖØ´¸µÄÖÊÁ¿
C£®´òµã¼ÆʱÆ÷ÓÃËĽڸɵç³Ø´®Áª¶ø³ÉµÄµç³Ø×é×÷ΪµçÔ´
D£®ÓÃÊÖÍÐ×ÅÖØ´¸£¬Ïȱպϴòµã¼ÆʱÆ÷µÄµçÔ´¿ª¹Ø£¬È»ºóÊÍ·ÅÖØ´¸
E£®´ò³öµÄÖ½´øÖУ¬Ö»Òªµã¼£ÇåÎú£¬¾Í¿ÉÒÔÔËÓù«Ê½mg¡÷h=$\frac{1}{2}$mv2À´ÑéÖ¤»úеÄÜÊÇ·ñÊغã
F£®ÑéÖ¤»úеÄÜÊÇ·ñÊغã±ØÐëÏÈÈ·¶¨ÖØÁ¦ÊÆÄܵIJο¼Æ½Ãæ
£¨2£©Èçͼ2ÊDzÉÓü׷½°¸Ê±µÃµ½µÄÒ»ÌõÖ½´ø£¬ÔÚ¼ÆËãͼÖÐNµãËÙ¶Èʱ£¬¼¸Î»Í¬Ñ§·Ö±ðÓÃÏÂÁв»Í¬µÄ·½·¨½øÐУ¬ÆäÖÐÕýÈ·µÄÊÇBC
A£®vN=gnTB£®vN=$\frac{{{x_n}+{x_{n+1}}}}{2T}$
C£®vN=$\frac{{{d_{n+1}}-{d_{n-1}}}}{2T}$D£®vN=g£¨n-1£©T
£¨3£©ÊµÑé½á¹ûÍùÍùÊÇÖØÁ¦ÊÆÄܵļõÉÙÁ¿ÂÔ´óÓÚ¶¯ÄܵÄÔö¼ÓÁ¿£¬¹ØÓÚÕâ¸öÎó²î£¬ÏÂÁÐ˵·¨ÕýÈ·µÄÊÇBD£®
A£®¸ÃÎó²îÊôÓÚżȻÎó²î
B£®¸ÃÎó²îÊôÓÚϵͳÎó²î
C£®¿ÉÒÔͨ¹ý¶à´Î²âÁ¿È¡Æ½¾ùÖµµÄ·½·¨À´¼õС¸ÃÎó²î
D£®¿ÉÒÔͨ¹ý¼õС¿ÕÆø×èÁ¦ºÍĦ²Á×èÁ¦µÄÓ°ÏìÀ´¼õС¸ÃÎó²î£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º¶àÑ¡Ìâ

2£®½«Á½¸ù×ã¹»³¤µÄ¹â»¬½ðÊôƽÐе¼¹ìMN¡¢PQ¹Ì¶¨ÔÚˮƽ×ÀÃæÉÏ£¬Á½µ¼¹ì¼ä¾àΪL£¬Á½µ¼¹ìµÄ×ó¶Ë½ÓÓÐ×èֵΪRµÄ¶¨Öµµç×裬һ³¤ÎªL¡¢ÖÊÁ¿ÎªmµÄµ¼Ìå°ô´¹Ö±µ¼¹ì·ÅÖ㬵¼Ìå°ôÓëµ¼¹ìʼÖÕ½Ó´¥Á¼ºÃ£¬µ¼Ìå°ôµÄ×èֵҲΪR£¬ÔÚµ¼¹ìËùÔڵĿռä¼ÓÒ»´Å¸ÐӦǿ¶ÈΪB·½ÏòÊúÖ±ÏòÉϵÄÔÈÇ¿´Å³¡£®ÏÖÓÃÒ»ÖÊÁ¿²»¼ÆµÄÇáÉþ½«µ¼Ìå°ôÓëÒ»ÖÊÁ¿Ò²ÎªmµÄÖØÎï¿ç¹ý¹â»¬µÄ¶¨»¬ÂÖ£¬ÖØÎï¾àÀëµØÃæµÄ¸ß¶È×ã¹»´ó£¬ÇáÉþÓëµ¼¹ìƽÐУ¬ÈçͼËùʾ£¬ÖØÎïÓɾ²Ö¹Êͷź󣬴ø¶¯µ¼Ìå°ôÒ»ÆðÔ˶¯£¬ÔÚÕû¸ö¹ý³ÌÖе¼Ìå°ôûÓз¢Éúת¶¯£¬ºöÂÔµ¼¹ìµÄµç×裬ÖØÁ¦¼ÓËÙ¶ÈΪg£®ÖØÎïÏÂÂä¸ß¶ÈΪhʱËÙ¶ÈΪv£¬ÔòÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A£®ÏÂÂä¹ý³ÌÖÐͨ¹ý¶¨Öµµç×èRµÄµçÁ÷·½ÏòÓÉPµ½M
B£®µ±ÖØÎïËÙ¶ÈΪvʱ£¬µ¼Ìå°ôÁ½¶ËµÄµçѹΪBLv
C£®µ¼Ìå°ôµÄ×î´óËÙ¶È$\frac{2mgR}{{B}^{2}{L}^{2}}$
D£®ÖØÎïÏÂÂä¸ß¶ÈΪhʱ£¬¶¨Öµµç×èR²úÉúµÄ½¹¶úÈÈΪmgh-mv2

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º¶àÑ¡Ìâ

19£®Ò»Áмòгºá²¨ÑØxÖáÕý·½Ïò´«²¥£¬Í¼£¨a£©ÊÇt=0ʱ¿ÌµÄ²¨ÐÎͼ£¬Í¼£¨b£©ºÍͼ£¨c£©·Ö±ðÊÇxÖáÉÏijÁ½´¦ÖʵãµÄÕñ¶¯Í¼Ïó£®ÓÉ´Ë¿ÉÖª£¬ÕâÁ½ÖʵãƽºâλÖÃÖ®¼äµÄ¾àÀë¿ÉÄÜÊÇ£¨¡¡¡¡£©
A£®$\frac{1}{3}$ mB£®$\frac{2}{3}$ mC£®1 mD£®$\frac{4}{3}$ m

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÊµÑéÌâ

6£®ÎïÀíС×éÔÚÒ»´Î̽¾¿»î¶¯ÖвâÁ¿»¬¿éÓëľ°åÖ®¼äµÄ¶¯Ä¦²ÁÒòÊý£®ÊµÑé×°ÖÃÈçͼ1Ëùʾ£¬Ò»±íÃæ´Ö²ÚµÄľ°å¹Ì¶¨ÔÚˮƽ×ÀÃæÉÏ£¬Ò»¶Ë×°Óж¨»¬ÂÖ£»Ä¾°åÉÏÓÐÒ»»¬¿é£¬ÆäÒ»¶ËÓëµç´Å´òµã¼ÆʱÆ÷µÄÖ½´øÏàÁ¬£¬ÁíÒ»¶Ëͨ¹ý¿ç¹ý¶¨»¬ÂÖµÄϸÏßÓëÍÐÅÌÁ¬½Ó£®´òµã¼ÆʱÆ÷ʹÓõĽ»Á÷µçÔ´µÄƵÂÊΪ50Hz£®¿ªÊ¼ÊµÑéʱ£¬ÔÚÍÐÅÌÖзÅÈëÊÊÁ¿íÀÂ룬»¬¿é¿ªÊ¼×öÔȼÓËÙÔ˶¯£¬ÔÚÖ½´øÉÏ´ò³öһϵÁÐСµã£®
¢ÙʵÑéÖУ¬¸ÃͬѧµÃµ½Ò»Ìõ½ÏΪÀíÏëµÄÖ½´ø£¬Èçͼ2Ëùʾ£¬´ÓÇåÎúµÄOµã¿ªÊ¼£¬Ã¿¸ô4¸öµãÈ¡Ò»¼ÆÊýµã£¨Öмä4¸öµãû»­³ö£©£¬·Ö±ð¼ÇΪA¡¢B¡¢C¡¢D¡¢E¡¢F£¬²âµÃ¸÷¼ÆÊýµãµ½OµãµÄ¾àÀëΪOA=1.61cm£¬OB=4.02cm£¬OC=7.26cm£¬OD=11.30cm£¬OE=16.14cm£¬OF=21.80cm£¬´òµã¼ÆʱÆ÷´òµãƵÂÊΪ50Hz£¬ÓÉ´ËÖ½´ø¿ÉµÃµ½´òEµãʱ»¬¿éµÄËÙ¶ÈvE=0.525m/s£¬´Ë´ÎʵÑ黬¿éµÄ¼ÓËÙ¶Èa=0.81m/s2£®£¨½á¹û¾ù±£ÁôÁ½Î»ÓÐЧÊý×Ö£©

¢ÚΪ²âÁ¿¶¯Ä¦²ÁÒòÊý£¬ÏÂÁÐÎïÀíÁ¿Öл¹Ó¦²âÁ¿µÄÓÐCE£®£¨ÌîÈëËùÑ¡ÎïÀíÁ¿Ç°µÄ×Öĸ£©
A£®Ä¾°åµÄ³¤¶Èl 
B£®Ä¾°åµÄÖÊÁ¿m1
C£®»¬¿éµÄÖÊÁ¿m2
D£®»¬¿éÔ˶¯µÄʱ¼ät
E£®ÍÐÅ̺ÍíÀÂëµÄ×ÜÖÊÁ¿m3
¢Û»¬¿éÓëľ°å¼äµÄ¶¯Ä¦²ÁÒòÊý¦Ì=$\frac{{m}_{3}g-£¨{m}_{2}+{m}_{3}£©a}{{m}_{2}g}$£¨Óñ»²âÎïÀíÁ¿µÄ×Öĸ±íʾ£¬ÖØÁ¦¼ÓËÙ¶ÈΪg£©£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ

16£®¡°Ãè»æСµçÖéµÄ·ü°²ÌØÐÔÇúÏß¡±ÊµÑéÖУ¬Ñ¡Óõĵç·ͼӦÊÇ£¨¡¡¡¡£©
A£®B£®C£®D£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÊµÑéÌâ

3£®ÔÚ²âÁ¿Ò»½Ú¸Éµç³Øµç¶¯ÊÆEºÍÄÚ×èrµÄʵÑéÖУ¬Ð¡Ã÷Éè¼ÆÁËÈçͼ¼×ËùʾµÄʵÑéµç·£®

£¨1£©¸ù¾Ýͼ¼×ʵÑéµç·£¬ÇëÔÚÒÒͼÖÐÓñʻ­Ïß´úÌæµ¼Ïߣ¬Íê³ÉʵÎïµç·µÄÁ¬½Ó£®
£¨2£©ÊµÑ鿪ʼǰ£¬Ó¦ÏȽ«»¬¶¯±ä×èÆ÷µÄ»¬Æ¬Pµ÷µ½a£¨Ñ¡Ìî¡°a¡±»ò¡°b¡±£©¶Ë£®
£¨3£©ºÏÉÏ¿ª¹ØS1£¬S2½Óͼ¼×ÖеÄ1λÖ㬸ı们¶¯±ä×èÆ÷µÄ×èÖµ£¬¼Ç¼Ï¼¸×éµçѹ±íʾÊýºÍ¶ÔÓ¦µÄµçÁ÷±íʾÊý£»S2¸Ä½Óͼ¼×ÖеÄ2λÖ㬸ı们¶¯±ä×èÆ÷µÄ×èÖµ£¬ÔټǼϼ¸×éµçѹ±íʾÊýºÍ¶ÔÓ¦µÄµçÁ÷±íʾÊý£®
ÔÚͬһ×ø±êϵÄÚ·Ö±ðÃèµã×÷³öµçѹ±íʾÊýUºÍ¶ÔÓ¦µÄµçÁ÷±íʾÊýIµÄͼÏó£¬Èçͼ±ûËùʾ£¬Á½Ö±ÏßÓë×ÝÖáµÄ½Ø¾à·Ö±ðΪUA¡¢UB£¬ÓëºáÖáµÄ½Ø¾à·Ö±ðΪIA¡¢IB£®
¢ÙS2½Ó1λÖÃʱ£¬×÷³öµÄU-IͼÏßÊÇͼ±ûÖеÄB£¨Ñ¡Ìî¡°A¡±»ò¡°B¡±£©Ïߣ»²â³öµÄµç³Øµç¶¯ÊÆEºÍÄÚ×èr´æÔÚϵͳÎó²î£¬Ô­ÒòÊǵçѹ±íµÄ·ÖÁ÷£®
¢ÚÓÉͼ±û¿ÉÖª£¬¸Éµç³Øµç¶¯ÊƺÍÄÚ×èµÄÕæʵֵ·Ö±ðΪEÕæ=UA£¬rÕæ=$\frac{{U}_{A}}{{I}_{B}}$£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÌî¿ÕÌâ

20£®Ö±ÏßABÊÇijµç³¡ÄÚµÄÒ»Ìõµç³¡Ïߣ¬Ò»µç×Ó¾­AµãʱµÄËÙ¶ÈΪvA£¬·½Ïò´ÓAÖ¸ÏòB£¬½öÔڵ糡Á¦×÷ÓÃϵ½´ïBµã£¬ËÙ¶ÈΪÁ㣬ÔòA¡¢BÁ½µãµçÊƽϸߵÄÊÇAµã£¬ÔÚA¡¢BÁ½µãµç×ӵĵçÊÆÄܽϴóµÄÊÇBµã£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º¶àÑ¡Ìâ

1£®Ä¦Ìì´óÂ¥ÖÐÒ»²¿Ö±Í¨¸ß²ãµÄ¿ÍÔ˵çÌÝ£¬Ðг̳¬¹ý°ÙÃ×£®µçÌݵļò»¯Ä£ÐÍÈçͼ1Ëùʾ£®¿¼ÂÇ°²È«¡¢ÊæÊÊ¡¢Ê¡Ê±µÈÒòËØ£¬µçÌݵļÓËÙ¶ÈaÊÇËæʱ¼ät±ä»¯µÄ£¬ÒÑÖªµçÌÝÔÚt=0ʱÓɾ²Ö¹¿ªÊ¼ÉÏÉý£¬a©¤tͼÏóÈçͼ2Ëùʾ£®ÓÉͼÏó¿ÉÒÔÅжϣ¨¡¡¡¡£©
A£®µçÌÝÔÚ0-1sÄÚ×öÔȼÓËÙÖ±ÏßÔ˶¯B£®µçÌÝÔÚ1-10sÄÚÔȼÓËÙÔ˶¯
C£®µçÌÝÔ˶¯µÄ×î´óËÙ¶ÈÊÇ10m/sD£®µçÌÝÔÚ31-40sÄÚÔȼÓËÙÔ˶¯

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸