¡°Ì½¾¿¶¯Äܶ¨Àí¡±µÄʵÑé×°ÖÃÈçͼËùʾ£¬µ±Ð¡³µÔÚÁ½ÌõÏðƤ½î×÷ÓÃϵ¯³öʱ£¬ÏðƤ½î¶ÔС³µ×öµÄ¹¦¼ÇΪW0¡£µ±ÓÃ4Ìõ¡¢6Ìõ¡¢8Ìõ¡­ÍêÈ«ÏàͬµÄÏðƤ½î²¢ÔÚÒ»Æð½øÐеÚ2´Î¡¢µÚ3´Î¡¢µÚ4´Î¡­ÊµÑéʱ£¬ÏðƤ½î¶ÔС³µ×öµÄ¹¦¼ÇΪ2W0¡¢3W0¡¢4W0¡­£¬Ã¿´ÎʵÑéÖÐÓɾ²Ö¹µ¯³öµÄС³µ»ñµÃµÄ×î´óËٶȿÉÓÉ´òµã¼ÆʱÆ÷Ëù´òµÄÖ½´ø²â³ö¡£
£¨1£©¸ÃʵÑé       £¨Ìî¡°ÐèÒª¡±»ò¡°²»ÐèÒª¡±£©Æ½ºâĦ²ÁÁ¦¡£

£¨2£©¹ØÓÚ¸ÃʵÑ飬ÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ         £»

A£®´òµã¼ÆʱÆ÷¿ÉÒÔÓÃÖ±Á÷µçÔ´¹©µç£¬µçѹΪ4~6V
B£®ÊµÑéÖÐʹÓõÄÈô¸É¸ùÏðƤ½îµÄÔ­³¤¿ÉÒÔ²»ÏàµÈ
C£®Ã¿´ÎʵÑéÖÐӦʹС³µ´ÓͬһλÖÃÓɾ²Ö¹µ¯³ö
D£®ÀûÓÃÿ´Î²â³öµÄС³µ×î´óËÙ¶ÈvmºÍÏðƤ½î×öµÄ¹¦W£¬ÒÀ´Î×ö³öW¡ªvm¡¢W¡ªvm2¡¢W¡ªvm3¡¢W2¡ªvm¡­µÄͼÏó£¬Ö±µ½ÕÒ³öºÏÁ¦×ö¹¦ÓëÎïÌåËٶȱ仯µÄ¹Øϵ¡£

£¨1£©ÐèÒª£»£¨2£©CD¡£

½âÎöÊÔÌâ·ÖÎö£º£¨1£©ÓÉÓÚʵÑéÖÐÒªÇóÏðƤ½î¶ÔС³µ×öµÄ¹¦ÊǺÏÍâÁ¦×öµÄ¹¦£¬¹ÊÐèҪƽºâĦ²ÁÁ¦£¬ÈÃÖØÁ¦×öµÄ¹¦ÓëĦ²ÁÁ¦×öµÄ¹¦ÏàµÈ£»£¨2£©´òµã¼ÆʱÆ÷ʹÓõÄÊǽ»Á÷µÍѹµçÔ´£¬¹ÊA´íÎó£»ÊµÑéÖÐʹÓõÄÏðƤ½îµÄÔ­³¤Ó¦¸ÃÏàµÈ£¬ÕâÑùÔö¼ÓÏðƤ½îµÄÌõÊý²ÅÄÜʹÍâÁ¦×ö¹¦Ôö¼ÓÏàÓ¦µÄ±¶Êý£¬¹ÊBÒ²´íÎ󣻶øCÖÐÿ´ÎʵÑéÖÐӦʹС³µ´ÓͬһλÖÃÓɾ²Ö¹µ¯³öÊÇÕýÈ·µÄ£»DÖÐÒÀ´Î×ö³öW¡ªvm¡¢W¡ªvm2¡¢W¡ªvm3¡¢W2¡ªvm¡­µÄͼÏó£¬Ö±µ½ÕÒ³öºÏÁ¦×ö¹¦ÓëÎïÌåËٶȱ仯µÄ¹ØϵҲÊÇÕýÈ·µÄ¡£
¿¼µã£ºÌ½¾¿¶¯Äܶ¨ÀíµÄʵÑé¡£

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÊµÑéÌâ

£¨1£©ÔÚÀûÓÃ×ÔÓÉÂäÌåÔ˶¯ÑéÖ¤»úеÄÜÊغ㶨ÂɵÄʵÑ飬ÈçͼaËùʾ¡£Èô´òµã¼ÆʱÆ÷´òµãÖÜÆÚT=0.02s£¬´ÓʵÑéÖдò³öµÄ¼¸ÌõÖ½´øÖÐÑ¡³öÒ»ÌõÀíÏëÖ½´ø£¬ÈçͼbËùʾ£¬Ñ¡È¡Ö½´øÉÏ´ò³öµÄÁ¬Ðø5¸öµãA¡¢B¡¢C¡¢D¡¢E£¬²â³öAµã¾àÆðʼµã0µÄ¾àÀëΪs0£¬µãAC¼äµÄ¾àÀëΪs1£¬µãCE¼äµÄ¾àÀëΪs2£¬ÆäÖÐs1=15.24cm£¬s2=16.76cm¡£ÒÑÖªÖØ´¸µÄÖÊÁ¿Îªm=1.0kg£¬µ±µØµÄÖØÁ¦¼ÓËÙ¶ÈΪg=9.8m/s2¡£

¢ÙÏÂÁÐÓйزÙ×÷µÄÐðÊöÕýÈ·µÄÊÇ_______________
A£®°²×°´òµã¼ÆʱÆ÷ʱҪעÒâÈÃÉÏÏÂÏÞλ¿×ÔÚͬһÊúÖ±ÏßÉÏ
B£®½«´òµã¼ÆʱÆ÷ÓëÖ±Á÷µÍѹµçÔ´Á¬½Ó
C£®ÊÍ·ÅÖ½´øʱӦ¾¡Á¿ÈÃÖØ´¸¿¿½ü´òµã¼ÆʱÆ÷
D£®Ó¦ÏÈÊÍ·ÅÖ½´ø£¬È»ºó½ÓͨµçÔ´
¢ÚÖ½´ø´ÓÆðʼµãOµ½´òÏÂCµãµÄ¹ý³ÌÖУ¬ÖØ´¸ÖØÁ¦ÊÆÄܵļõÉÙÁ¿Îª¡÷EP=         £¬ÖØ´¸¶¯ÄܵÄÔö¼ÓÁ¿Îª¡÷Ek=          £¨±¾Ìâ¾ùÓÃÌâÄ¿ÖÐËù¸øµÄÎïÀíÁ¿·ûºÅд³ö±í´ïʽ×÷´ð£©¡£
¢ÛÔÚʵÑéÖз¢ÏÖ£¬ÖØ´¸¼õÉÙµÄÖØÁ¦ÊÆÄÜ×ÜÊÇ´óÓÚÖØ´¸Ôö¼ÓµÄ¶¯ÄÜ£¬ÆäÖ÷ÒªÔ­ÒòÊÇÓÉÓÚÖØ´¸ÔÚÏÂÂä¹ý³ÌÖдæÔÚ×Å×èÁ¦µÄ×÷Óá£ÀûÓÃÕâ¸ö×°Öôò³öµÄÖ½´ø¿ÉÒÔ²âÁ¿ÖØ´¸ÏÂÂäµÄ¼ÓËÙ¶Èa=         m/s2£¬ÔòÔÚÏÂÂä¹ý³ÌÖÐÊܵ½Æ½¾ù×èÁ¦´óСΪ          N£¨´ËÌâ¼ÆËã½á¹û¾ù±£Áô2λÓÐЧÊý×Ö£©¡£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÊµÑéÌâ

£¨8·Ö£©ÈçͼÊÇijͬѧÔÚ×öÔȱäËÙÖ±ÏßÔ˶¯ÊµÑéÖлñµÃµÄÒ»ÌõÖ½´ø

¢ÙÒÑÖª´òµã¼ÆʱÆ÷µçԴƵÂÊΪ50Hz£¬ÔòÖ½´øÉÏ´òÏàÁÚÁ½µãµÄʱ¼ä¼ä¸ôΪ___£»
¢ÚÑ¡È¡ABCDÖ½´øÉÏËĸöµã£¬´ÓͼÖжÁ³öA¡¢BÁ½µã¼ä¾às=____cm£»Cµã¶ÔÓ¦µÄËÙ¶ÈÊÇ___m/s£¬ÔȱäËÙÖ±ÏßÔ˶¯µÄ¼ÓËÙ¶ÈΪ     m/s2£¨¼ÆËã½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÊµÑéÌâ

ijͬѧÉè¼ÆÁËÒ»¸ö̽¾¿¼ÓËÙ¶ÈaÓëÎïÌåËùÊܺÏÁ¦F¼°ÖÊÁ¿m¹ØϵµÄʵÑ飬ͼ£¨a£©ÎªÊµÑé×°Öüòͼ¡££¨½»Á÷µçµÄƵÂÊΪ50Hz£©

£¨1£©Í¼£¨b£©ÎªÄ³´ÎʵÑéµÃµ½µÄÖ½´ø£¬¸ù¾ÝÖ½´ø¿ÉÇó³öС³µµÄ¼ÓËٶȴóСΪ     m/s2£®£¨±£Áô¶þλÓÐЧÊý×Ö£©
£¨2£©ÎªÁËÄÜÓÃϸÏßµÄÀ­Á¦±íʾС³µÊܵ½µÄºÏÍâÁ¦£¬ÊµÑé²Ù×÷ʱ±ØÐëÊ×ÏÈ_______________.
£¨3£©ÈôС³µÖÊÁ¿M£½0.4 kg£¬¸Ä±äÉ°Í°ºÍÉ°µÄÖÊÁ¿mµÄÖµ£¬½øÐжà´ÎʵÑ飬ÒÔÏÂmµÄÖµºÏÊʵÄÊÇ__________£®£¨ÌîÑ¡Ïî·ûºÅ£©

A£®m1£½5gB£®m2£½10gC£®m3£½400gD£®m4£½1kg

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÊµÑéÌâ

ijЩ¹ÌÌå²ÄÁÏÊܵ½ÍâÁ¦ºó³ýÁ˲úÉúÐα䣬Æäµç×èÂÊÒ²Òª·¢Éú±ä»¯£¬ÕâÖÖÓÉÓÚÍâÁ¦µÄ×÷Óöøʹ²ÄÁϵç×èÂÊ·¢Éú±ä»¯µÄÏÖÏó³ÆΪ¡°Ñ¹×èЧӦ¡±¡£ÏÖÓÃÈçͼËùʾµÄµç·Ñо¿Ä³³¤±¡°åµç×èRxµÄѹ×èЧӦ£¬ÒÑÖªRxµÄ×èÖµ±ä»¯·¶Î§Îª¼¸Å·µ½¼¸Ê®Å·£¬ÊµÑéÊÒÖÐÓÐÏÂÁÐÆ÷²Ä£º

A£®µçÔ´E£¨3 V£¬ÄÚ×èԼΪ1 ¦¸£©
B£®µçÁ÷±íAl£¨0£®6 A£¬ÄÚ×èr1£½5¦¸£©
C£®µçÁ÷±íA2£¨0£®6 A£¬ÄÚ×èr2ԼΪ1 ¦¸£©
D£®¿ª¹ØS£¬¶¨Öµµç×èR0
£¨1£©ÎªÁ˱ȽÏ׼ȷµØ²âÁ¿µç×èRxµÄ×èÖµ£¬ÇëÍê³ÉÐéÏß¿òÄÚµç·ͼµÄÉè¼Æ¡£
£¨2£©ÔÚµç×èRxÉϼÓÒ»¸öÊúÖ±ÏòϵÄÁ¦F£¨ÉèÊúÖ±ÏòÏÂΪÕý·½Ïò£©£¬±ÕºÏ¿ª¹ØS£¬¼Çϵç±í¶ÁÊý£¬A1µÄ¶ÁÊýΪI1£¬A2µÄ¶ÁÊýΪI2£¬µÃRx£½______________£¨ÓÃ×Öĸ±íʾ£©¡£
£¨3£©¸Ä±äÁ¦µÄ´óС£¬µÃµ½²»Í¬µÄRxÖµ£¬È»ºóÈÃÁ¦·´Ïò´ÓÏÂÏòÉϼ·Ñ¹µç×裬²¢¸Ä±äÁ¦µÄ´óС£¬µÃµ½²»Í¬µÄRxÖµ£¬×îºó»æ³ÉµÄͼÏñÈçͼËùʾ¡£µ±FÊúÖ±ÏòÏ£¨ÉèÊúÖ±ÏòÏÂΪÕý·½Ïò£©Ê±£¬¿ÉµÃRxÓëËùÊÜѹÁ¦FµÄÊýÖµ¹ØϵÊÇRx£½______________¡££¨¸÷ÎïÀíÁ¿µ¥Î»¾ùΪ¹ú¼Êµ¥Î»£©

£¨4£©¶¨Öµµç×èR0µÄ×èÖµÓ¦¸ÃÑ¡ÓÃ________________¡£
A£®1 ¦¸             B£®5 ¦¸            C£®10 ¦¸            D£®20 ¦¸

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÊµÑéÌâ

£¨±¾Ìâ10·Ö£©ÈçͼËùʾ£¬Ä³Í¬Ñ§ÔÚ×ö¡°Ì½¾¿¹¦ÓëËٶȱ仯µÄ¹Øϵ¡±µÄʵÑé¡£µ±Ð¡³µÔÚlÌõÏðƤ½îµÄ×÷ÓÃÏÂÑØľ°å»¬ÐÐʱ£¬ÏðƤ½î¶ÔС³µ×öµÄ¹¦¼ÇΪW¡£µ±ÓÃ2Ìõ¡¢3Ìõ¡­ÏðƤ½îÖظ´ÊµÑéʱ£¬É跨ʹÿ´ÎʵÑéÖÐÏðƤ½îËù×öµÄ¹¦·Ö±ðΪ2W¡¢3W¡­¡£

(1)¡¢Í¼Öеç»ð»¨¼ÆʱÆ÷µÄ¹¤×÷µçѹÊÇ         VµÄ½»Á÷µç£»
(2)¡¢ÊµÑéÊÒÌṩµÄÆ÷²ÄÈçÏ£º³¤Ä¾°å¡¢Ð¡³µ¡¢ÏðƤ½î¶à¸ù¡¢¶¤×Ó¡¢´òµã¼ÆʱÆ÷¡¢Ö½´ø¡¢µçÔ´µÈ¡£»¹È±ÉٵIJâÁ¿Æ÷²ÄÊÇ                   ¡£
(3)ͼÖÐС³µÉÏÓÐÒ»¹Ì¶¨Ð¡Âݶ¤£¬ÏÂͼ¸ø³öÁË4ÖÖÏðƤ½îÓëСÂݶ¤µÄÌ×½Ó·½Ê½Ê¾Òâͼ£¬Îª¼õСʵÑéÎó²î£¬ÄãÈÏΪ×îºÏÀíµÄÌ×½Ó·½Ê½ÊÇ       ¡£

(4)ÔÚÕýÈ·²Ù×÷µÄÇé¿öÏ£¬Ä³´ÎËù´òµÄÖ½´øÈçÏÂͼËùʾ¡£´òÔÚÖ½´øÉϵĵ㲢²»¶¼ÊǾùÔȵģ¬ÎªÁ˲âÁ¿ÏðƤ½î×ö¹¦ºóС³µ»ñµÃµÄËٶȣ¬Ó¦Ñ¡ÓÃÖ½´øµÄ                ²¿·Ö½øÐвâÁ¿(¸ù¾ÝÏÂÃæËùʾµÄÖ½´ø»Ø´ð£©£¬Ð¡³µ»ñµÃµÄËÙ¶ÈÊÇ               m/s¡£(¼ÆËã½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÊµÑéÌâ

ijÎïÀíÐËȤ»î¶¯Ð¡×éÀûÓÃÈçÓÒͼװÖÿÉÒÔÑéÖ¤»úеÄÜÊغ㶨ÂÉ£¬ÊµÑéÖеç»ð»¨´òµã¼ÆʱÆ÷ËùÓý»Á÷µçÔ´µÄƵÂÊΪ50 Hz£¬µÃµ½ÈçÏÂͼËùʾµÄÖ½´ø¡£Ñ¡È¡Ö½´øÉÏ´ò³öµÄÁ¬ÐøÎå¸öµãA¡¢B¡¢C¡¢D¡¢E£¬ÏÖ²â³öAµã¾àÆðµãO£¨³õËÙ¶ÈΪÁ㣩µÄ¾àÀëΪx0£½19.00cm£¬µãA¡¢C¼äµÄ¾àÀëΪx1£½8.36 cm£¬µãC¡¢E¼äµÄ¾àÀëΪx2£½9.88cm£¬È¡g= 9.8m/s2£¬²âµÃÖØÎïµÄÖÊÁ¿Îª100g¡£

£¨1£©Ñ¡È¡O¡¢CÁ½µãΪ³õĩλÖÃÑо¿»úеÄÜÊغ㡣ÖØÎï¼õÉÙµÄÖØÁ¦ÊÆÄÜÊÇ___________J£¬´òÏÂCµãʱÖØÎïµÄ¶¯ÄÜÊÇ___________J£¨±£ÁôÈýλÓÐЧÊý×Ö£©£»
£¨2£©ÊµÑéÖУ¬ÓÉÓÚ´æÔÚ×èÁ¦×÷Óã¬ÖØÎï¼õÉÙµÄÖØÁ¦ÊÆÄÜ×ÜÊÇ´óÓÚÖØÎïÔö¼ÓµÄ¶¯ÄÜ¡£ÒÀ¾ÝʵÑéÊý¾ÝÀ´¼ÆËãÖØÎïÔÚÏÂÂä¹ý³ÌÖÐÊܵ½µÄƽ¾ù×èÁ¦´óСF£½_________N£¨±£ÁôһλÓÐЧÊý×Ö£©£»
£¨3£©¸ù¾ÝÖ½´øËã³ö¸÷µãµÄËÙ¶Èv£¬²âÁ¿³ö´ÓOµã¿ªÊ¼ÏÂÂäµÄ¾àÀëh£¬ÔòÒÔv2Ϊ×Ý×ø±êÖᣬÒÔhΪºá×ø±êÖᣬ»­³öµÄv2-hͼÏñΪͼÖеÄ______¡£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÊµÑéÌâ

ijʵÑéС×éÓÃÖÊÁ¿Îª0.5kgµÄÖØ´¸µÄ×ÔÓÉÂäÌåÔ˶¯À´ÑéÖ¤»úеÄÜÊغ㣬°²×°ºÃÈçͼ¼×ËùʾµÄʵÑé×°ÖýøÐÐʵÑé¡£Èçͼ¼×Ëùʾ½ÓͨµçÔ´£¬¾²Ö¹ÊÍ·ÅÖØÎ´ò³öÒ»ÌõÖ½´øÈçͼÒÒËùʾ¡£
   
Çë»Ø´ð£º£¨1£©¸ÃʵÑéÖбØÐèµÄ²âÁ¿Æ÷²ÄÊÇ            
£¨2£©Ö¸³öÉÏÊö×°Öð²×°ÖÐÒ»´¦²»ºÏÀíµÄµØ·½                  ¡£
£¨3£©ÈçͼÒÒÖ½´øÉÏËùʾ£¬ÔòÖØ´¸Ô˶¯µÄ¼ÓËٶȠ                 m/s2£¬ÖØ´¸´ÓOµãÔ˶¯µ½DµãµÄ¹ý³Ì£¬ÖØÁ¦ÊÆÄܼõÉÙ           J¡££¨±¾µØµÄÖØÁ¦¼ÓËÙ¶ÈgÈ¡9.8m/s2£¬¼ÆËã½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÊµÑéÌâ

ÈçͼËùʾΪ²âÁ¿ÇãбÆøµæµ¼¹ìÉÏ»¬¿é¼ÓËٶȵÄʵÑ飬A¡¢BΪÆøµæµ¼¹ìÉϵÄÁ½¸ö¹âµçÃÅ£¬µ±»¬¿é´ÓÆøµæµ¼¹ìÒ»¶ËÔȼÓËÙ»¬Ï£¬»¬¿éÉϵĵ²¹âƬͨ¹ý¹âµçÃÅʱ£¬¿Éͨ¹ýÁ¬½ÓÔÚ¹âµçÃÅÉϵĵç×ÓÒÇÆ÷¼Ç¼ʱ¼ä¡£
£¨1£©ÈôÓÃÒ»ÂÝÐý²â΢Æ÷²âÁ¿µ²¹âƬµÄ¿í¶È£¬ÈçÓÒͼËùʾ£¬¶ÁÊýΪd =____   __cm£»

£¨2£©Èôij´Î²âµÃµ²¹âƬͨ¹ý¹âµçÃÅAµÄʱ¼äΪt1£¬´ÓAµ½BµÄʱ¼äΪt£¬µ²¹âƬͨ¹ý¹âµçÃÅBµÄʱ¼äΪt2£¬ÀûÓÃËù²âµÃµÄÎïÀíÁ¿À´±í´ï»¬¿é¼ÓËٶȣ¬ÔòÆä±í´ïʽΪa =            ¡££¨ÓÃÌâÉèÖи÷ÎïÀíÁ¿·ûºÅ±íʾ£©

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸