5£®Ôڲⶨһ×é¸Éµç³ØµÄµç¶¯ÊƺÍÄÚ×èµÄʵÑéÖУ¬±¸ÓÐÏÂÁÐÆ÷²Ä£¬
£¨A£©´ý²âµÄ¸Éµç³Ø
£¨B£©µçÁ÷´«¸ÐÆ÷1
£¨C£©µçÁ÷´«¸ÐÆ÷2
£¨D£©¶¨Öµµç×èR0£¨3k¦¸£©
£¨E£©»¬¶¯±ä×èÆ÷R£¨0-20¦¸£¬3A£©
£¨F£©¿ª¹ØºÍµ¼ÏßÈô¸É
ijͬѧ·¢ÏÖÉÏÊöÆ÷²ÄÖÐûÓеçѹ´«¸ÐÆ÷£¬µ«¸ø³öÁËÁ½¸öµçÁ÷´«¸ÐÆ÷£¬ÓÚÊÇËûÉè¼ÆÁËÈçͼ¼×ËùʾµÄµç·Íê³ÉʵÑ飮

£¨1£©ÔÚʵÑé²Ù×÷¹ý³ÌÖУ¬¸Ãͬѧ½«»¬¶¯±ä×èÆ÷RµÄ»¬Æ¬PÏò×󻬶¯£¬ÔòµçÁ÷´«¸ÐÆ÷1µÄʾÊý½«±ä´ó£¨Ñ¡Ìî¡°±ä´ó¡±»ò¡°±äС¡±£©£®
£¨2£©¸ÃͬѧÀûÓòâ³öµÄʵÑéÊý¾Ý»æ³öµÄI1-I2ͼÏߣ¨I1ΪµçÁ÷´«¸ÐÆ÷1µÄʾÊý£¬I2ΪµçÁ÷´«¸ÐÆ÷2µÄʾÊý£¬ÇÒI1µÄÊýֵԶԶСÓÚI2µÄÊýÖµ£©£¬ÈçͼÒÒËùʾ£®ÔòÓÉͼÏ߿ɵñ»²âµç³ØµÄµç¶¯ÊÆE=4.5V£¬ÄÚ×èr=1.5¦¸£®
£¨3£©Èô½«Í¼ÏßµÄ×Ý×ø±ê¸ÄΪI1R0£¬ÔòͼÏßÓë×Ý×ø±êµÄ½»µãµÄÎïÀíº¬Ò弴Ϊµç¶¯ÊƵĴóС£®

·ÖÎö £¨1£©·ÖÎöµç·½á¹¹£¬¸ù¾Ý±ÕºÏµç·ŷķ¶¨Âɼ°´®²¢Áªµç·µÄ¹æÂɿɵóöʾÊýµÄ±ä»¯£»
£¨2£©Óɱպϵç·ŷķ¶¨ÂɿɵóöÓëÌâÄ¿Öиø³öÒÇÆ÷Óйصıí´ïʽ£¬ÔÙÓÉÊýѧ¹æÂɿɵóöµç¶¯ÊƺÍÄÚµç×裮
£¨3£©ÈôͼÏó×Ý×ø±êΪ·¶Ëµçѹ£¬ÔòͼÏóÓë×Ý×ø±êµÄ½»µãΪµçÔ´µÄµç¶¯ÊÆ£»

½â´ð ½â£º£¨1£©ÓÉͼ¿ÉÖª£¬»¬Æ¬PÏò×󻬶¯Ê±£¬½ÓÈëµç×èÔö´ó£¬×ܵç×èÔö´ó£¬×ܵçÁ÷¼õС£¬ÄÚѹ¼õС£¬Â·¶ËµçѹÔö´ó£¬¹ÊR0ÖеĵçÁ÷Ôö´ó£»
£¨2£©Óɱպϵç·ŷķ¶¨ÂɿɵãºE=I1R0+I2r£¬I1=-$\frac{r}{{R}_{0}}$I2+$\frac{E}{{R}_{0}}$£¬
ÓÉÊýѧ֪¿ÉµÃ£ºÍ¼ÏóÖеÄk=-$\frac{r}{{R}_{0}}$£»b=$\frac{E}{{R}_{0}}$£¬ÒÔ
ÓÉͼ¿ÉÖª£ºÓë×ÝÖá½Ø¾àb=0.0015£»k=-0.0005£¬
µçÔ´µç¶¯ÊÆ£ºE=bR0=3¡Á1.5=4.5V£»r=-kR0=0.0005¡Á3000=1.5¦¸£»
£¨3£©ÓÉÒÔÉÏ·ÖÎö¿ÉÖª£¬ÈôͼÏó×Ý×ø±ê¸ÄΪ·¶Ëµçѹ£¬¼´I1R0£¬ÔòͼÏóÓë×Ý×ø±êµÄ½»µãΪµçÔ´µÄµç¶¯ÊÆ£»
¹Ê´ð°¸Îª£º£¨1£©±ä´ó£»£¨2£©4.5£»1.5£»£¨3£©I1R0

µãÆÀ ±¾ÌâҪעÒâµç·ÖвÉÓõÄÊÇ´«¸ÐÆ÷°²°²·¨²âµç¶¯ÊƺÍÄÚµç×裬Æä±¾ÖʾÍÊÇÓÃÆäÖеıíÍ·¸Ä×°µçѹ±í£»ÒªÃ÷È·¸Ä×°Ô­Àí£¬¸ù¾Ý´®²¢Áªµç·µÄ¹æÂɽøÐзÖÎöÇó½â£®

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º½â´ðÌâ

15£®ÓÃÈçͼËùʾװÖýøÐÐÒÔÏÂʵÑ飺
£¨1£©ÏȲâ³ö»¬¿éA¡¢BµÄÖÊÁ¿M¡¢m¼°»¬¿éÓë×ÀÃæµÄ¶¯Ä¦²ÁÒòÊý¦Ì£¬²é³öµ±µØÖØÁ¦¼ÓËÙ¶Èg£»
£¨2£©ÓÃϸÏß½«»¬¿éA¡¢BÁ¬½á£¬Ê¹A¡¢B¼äµÄµ¯»ÉѹËõ£¬»¬¿éB½ô¿¿ÔÚ×À±ß£»
£¨3£©ÉÕ¶ÏϸÏߣ¬²â³ö»¬¿éB×öƽÅ×Ô˶¯ÂäµØʱµÄˮƽλÒÆΪs1£¬»¬¿éAÑØ×ÀÃ滬ÐеľàÀëΪs2£®
ΪÑéÖ¤¶¯Á¿Êغ㶨ÂÉ£¬Ð´³ö»¹Ðè²âÁ¿µÄÎïÀíÁ¿¼°±í´ïËüµÄ×Öĸ×ÀÃæÀëµØÃæµÄ¸ß¶Èh£®Èç¹û¶¯Á¿Êغ㣬ÐëÂú×ãµÄ¹ØϵʽÊÇ
$M\sqrt{2¦Ìg{s}_{2}}=m{s}_{1}\sqrt{\frac{g}{2h}}$£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º½â´ðÌâ

16£®Ä³Í¬Ñ§ÀûÓÃÈçͼ¼×ËùʾµÄʵÑé×°ÖÃÑéÖ¤»úеÄÜÊغ㶨ÂÉ£¬ÖÊÁ¿Îªm1µÄÎïÌåͨ¹ýϸÏßÈƹý¹â»¬µÄС¶¨»¬ÂÖË©×Å·ÅÔÚˮƽ¹ìµÀÉÏÖÊÁ¿Îªm2µÄС³µ£¨¿ÉÊÓΪÖʵ㣩£¬ÔÚ¹ìµÀÉϵÄAµãºÍBµã·Ö±ð°²×°ÓÐÒ»¹âµçÃÅ£¬Ð¡³µÉÏÓÐÒ»¿í¶ÈΪdµÄµ²¹âƬ£¬Óα꿨³ß²â³öµ²¹âƬµÄ¿í¶ÈÈçͼÒÒËùʾ£¬ÏÖ°ÑС³µÀ­µ½Ë®Æ½ÃæÉϵÄijµãÓɾ²Ö¹ÊÍ·Å£¬µ²¹âƬͨ¹ýAµÄµ²¹âʱ¼äΪt1£¬Í¨¹ýBµÄµ²¹âʱ¼äΪt2£®ÎªÁËÖ¤Ã÷С³µÍ¨¹ýA¡¢BʱϵͳµÄ»úеÄÜÊغ㣬»¹ÐèÒª½øÐÐһЩʵÑé²âÁ¿ºÍÁÐʽ֤Ã÷£®

£¨1£©µ²¹âƬµÄ¿í¶Èd=5.15mm£®
£¨2£©ÏÂÁÐʵÑé²âÁ¿²½ÖèÖбØÒªµÄÊÇACD£®
A£®ÓÃÌìƽ²â³öС³µµÄÖÊÁ¿m2ºÍÎïÌåµÄÖÊÁ¿m1
B£®²â³öС³µÍ¨¹ýA¡¢BÁ½¹âµçÃÅÖ®¼äËùÓõÄʱ¼ä¡÷t
C£®²â³ö»¬ÂÖÉ϶ËÀëˮƽ¹ìµÀµÄ¸ß¶Èh
D£®²â³öС³µÔÚA¡¢BλÖÃʱÉþ×ÓÓëˮƽ·½Ïò¼Ð½Ç¦È1ºÍ¦È2
£¨3£©Èô¸ÃͬѧÓÃdºÍtµÄ±ÈÖµÀ´·´Ó³Ð¡³µ¾­¹ýA¡¢B¹âµçÃÅʱµÄËٶȣ¬²¢ÉèÏëÈç¹ûÄÜÂú×ã$\frac{1}{2}$m2[${£¨\frac{d}{{t}_{2}}£©}^{2}$-${£¨\frac{d}{{t}_{1}}£©}^{2}$]+$\frac{1}{2}$m1[${£¨\frac{dco{s¦È}_{2}}{{t}_{2}}£©}^{2}$-${£¨\frac{dco{s¦È}_{1}}{{t}_{1}}£©}^{2}$]=m1g£¨$\frac{h}{si{n¦È}_{1}}$-$\frac{h}{si{n¦È}_{2}}$£©¹Øϵʽ£¬¼´ÄÜÖ¤Ã÷С³µºÍÎïÌå×é³ÉµÄϵͳ»úеÄÜÊغ㣮

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÌî¿ÕÌâ

13£®ÔÚ¡±ÑéÖ¤»úеÄÜÊغ㶨ÂÉ¡±µÄʵÑéÖУ¬ÒÑÖª´òµã¼ÆʱÆ÷ËùÓõçÔ´µÄƵÂÊΪ50Hz£¬µ±µØµÄÖØÁ¦¼ÓËÙ¶Èg=9.80m/s2£¬²âµÃËùÓõÄÖØÎïµÄÖÊÁ¿Îª1.00kg£®ÊµÑéÖеõ½Ò»Ìõµã¼£ÇåÎúµÄÖ½´øÈçͼËùʾ£¬°ÑµÚÒ»¸öµã¼Ç×÷0£¬ÁíÑ¡Á¬ÐøµÄ4¸öµãA¡¢B¡¢C¡¢D×÷Ϊ²âÁ¿µÄµã£®¾­²âÁ¿ÖªµÀA¡¢B¡¢C¡¢D¸÷µãµ½OµãµÄ¾àÀë·Ö±ðΪ62.99cm¡¢70.18cm¡¢77.76cm¡¢85.73cm£®¸ù¾ÝÒÔÉÏÊý¾Ý£¬¿ÉÖªÖØÎïÓÉOµãÔ˶¯µ½Cµã£¬ÖØÁ¦ÊÆÄܵļõÉÙÁ¿µÈÓÚ7.62 J£¬¶¯ÄܵÄÔö¼ÓÁ¿µÈÓÚ7.54 J£¨È¡ÈýλÓÐЧÊý×Ö£©£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ

20£®ÈçͼΪ¡°¸ß³µÌßÍ롱µÄÔÓ¼¼£¬ÑÝÔ±²È×ŶÀÂÖ³µ£¬Í·¶¥×ÅÍ룬½«Ò»Ö»Íë¿ÛÔÚÒ»Ö»½ÅÉÏ£¬½«ÍëÌßÆð£¬ÓÉÓÚÍëµ×Óë¿ÕÆøµÄ½Ó´¥Ãæ»ý½Ï´ó£¬ÍëËùÊܵĿÕÆø×èÁ¦²»¿ÉºöÂÔ£¬ÍëÀ뿪½ÅºóÔÚ¿ÕÖл®³öÒ»¶Î»¡Ïߣ¬ÕýºÃÂäÔÚÍ·¶¥µÄÍëÀ¶ÔÍë´Ó¿ÛÔÚ½ÅÉϵ½ÍëÂäÈëÍ·¶¥ÍëÀïµÄÕû¸ö¹ý³ÌÖУ¨¡¡¡¡£©
A£®ÍëÔÚÀ뿪½Åºó´¦ÓÚÍêȫʧÖØ״̬
B£®ÍëÀ뿪½ÅºóËù×öµÄÔ˶¯ÊÇбÅ×Ô˶¯
C£®ÈôÍëÔÚÍÑÀë½ÅʱµÄËÙ¶ÈΪv£¬ÔòÍëÔÚÍÑÀë½ÅÇ°µÄ¹ý³ÌÖеÄƽ¾ùËÙ¶ÈÒ»¶¨Îª$\frac{v}{2}$
D£®ÍëÍÑÀë½ÅµÄ˲¼ä£¬½Å£¨ÌßÍëµÄÄDz¿·Ö£©µÄ¼ÓËٶȴóСһ¶¨´óÓÚÍëµÄ¼ÓËٶȴóС

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º½â´ðÌâ

10£®ÈçͼËùʾ£¬¹«Â·ÉÏÒ»Á¾Æû³µ£¨¿É¿´³ÉÖʵ㣩ÒÔv1=12m/sµÄËÙ¶ÈÔÈËÙÐÐÊ»£¬Æû³µÐÐÖÁAµãʱ£¬Ä³ÈËΪ´î³µ£¬´Ó¾à¹«Â·30mÔ¶µÄC´¦¿ªÊ¼ÒÔv2=3m/sµÄËÙ¶ÈÕý¶Ô¹«Â·ÔÈËÙÅÜÈ¥£¬Ë¾»ú¼û״;ÖÐɲ³µ£¬Æû³µ×öÔȼõËÙÖ±ÏßÔ˶¯£¬½á¹û³µÍ£ÔÚBµãʱ£¬ÈËͬʱµ½´ïBµã£®ÒÑÖªA¡¢B¼äµÄ¾àÀëx=100m£®ÊÔÇó£º
£¨1£©Æû³µÔÚ¾àAµã¶àÔ¶´¦¿ªÊ¼É²³µ£®
£¨2£©É²³µºóÆû³µµÄ¼ÓËٶȴóС£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÌî¿ÕÌâ

17£®ÈçͼËùʾ£¬Ð¡ÇòAÑظßΪh£¬Çã½ÇΪ¦ÈµÄ¹â»¬Ð±ÃæÒÔ³õËÙ¶Èv0´Ó¶¥¶Ë»¬µ½µ×¶Ë£¬¶øÏàͬµÄСÇòBÒÔͬÑùµÄ´óСµÄ³õËٶȴÓͬµÈ¸ß¶È´¦ÊúÖ±ÉÏÅ×£¬²»¼Æ¿ÕÆø×èÁ¦£¬Ôò×ŵØ֮ǰA¡¢BÁ½Ð¡ÇòµÄ¼ÓËٶȴóСµÄ±ÈֵΪsin¦È£º1£»A¡¢BÁ½Ð¡Çò×ŵØʱËٶȵÄÊúÖ±·ÖÁ¿µÄ±ÈֵΪsin¦È£º1£»×ŵØʱ£¬A¡¢BÁ½Ð¡ÇòµÄÖØÁ¦¹¦ÂʵıÈֵΪsin¦È£º1£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º½â´ðÌâ

14£®ÈçͼËùʾ£¬Ò»ÖÊÁ¿M=0.4kgµÄСÎï¿éBÔÚ×ã¹»³¤µÄ¹â»¬Ë®Æ½Ì¨ÃæÉϾ²Ö¹²»¶¯£¬ÆäÓÒ²à¹Ì¶¨ÓÐÒ»ÇáÖÊˮƽµ¯»É£¨´¦ÓÚÔ­³¤£©£®Ì¨ÃæµÄÓÒ±ßƽ»¬¶Ô½ÓÓÐÒ»µÈ¸ßµÄˮƽ´«ËÍ´ø£¬´«ËÍ´øʼÖÕÒÔ¦Ô=1m/sµÄËÙÂÊÄæʱÕëת¶¯£®ÁíÒ»ÖÊÁ¿m=0.1kgµÄСÎï¿éAÒÔËٶȦÔ0=4m/sˮƽ»¬ÉÏ´«ËÍ´øµÄÓҶˣ®ÒÑÖªÎï¿éAÓë´«ËÍ´øÖ®¼äµÄ¶¯Ä¦²ÁÒòÊý¦Ì=0.1£¬´«ËÍ´ø×óÓÒÁ½¶ËµÄ¾àÀël=3.5m£¬»¬¿éA¡¢B¾ùÊÓΪÖʵ㣬ºöÂÔ¿ÕÆø×èÁ¦£¬È¡g=10m/s2£®
£¨1£©ÇóÎï¿éAµÚÒ»´Îµ½´ï´«ËÍ´ø×ó¶ËʱËٶȴóС£»
£¨2£©ÇóÎï¿éAµÚÒ»´ÎѹËõµ¯»É¹ý³ÌÖе¯»ÉµÄ×î´óµ¯ÐÔÊÆÄÜEpm£»
£¨3£©Îï¿éA»á²»»áµÚ¶þ´ÎѹËõµ¯»É£¿

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ

15£®½«Ò»Ð¡Çò´Ó¸ß´¦Ë®Æ½Å׳ö£¬×î³õ2sÄÚСÇò¶¯ÄÜEkËæʱ¼ät±ä»¯µÄͼÏßÈçͼËùʾ£¬²»¼Æ¿ÕÆø×èÁ¦£¬ÖØÁ¦¼ÓËÙ¶Èg=10m/s2£®¸ù¾ÝͼÏóÐÅÏ¢£¬²»ÄÜÈ·¶¨µÄÎïÀíÁ¿ÊÇ£¨¡¡¡¡£©
A£®Ð¡ÇòµÄÖÊÁ¿
B£®Ð¡ÇòÅ׳öʱµÄ¸ß¶È
C£®×î³õ2sÄÚÖØÁ¦¶ÔСÇò×ö¹¦µÄƽ¾ù¹¦ÂÊ
D£®Ð¡ÇòµÄ³õËÙ¶È

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸