£¨1£©¡¢ÔڲⶨÔȱäËÙÖ±ÏßÔ˶¯¼ÓËٶȵÄʵÑéÖУ¬½«ÒÔϲ½ÖèµÄ´úºÅ°´ºÏÀí˳ÐòÌî¿ÕдÔÚºáÏßÉÏ£º______£®
£¨A£©À­×¡Ö½´ø£¬½«Ð¡³µÒÆÖÁ¿¿½ü´òµã¼ÆʱÆ÷´¦£¬ÏȽÓͨµçÔ´£¬ºó·Å¿ªÖ½´ø£»
£¨B£©½«´òµã¼ÆʱÆ÷¹Ì¶¨ÔÚƽ°åÉÏ£¬²¢½ÓºÃµç·£»
£¨C£©°ÑÒ»ÌõϸÉþË©ÔÚС³µÉÏ£¬Ï¸Éþ¿ç¹ý¶¨»¬ÂÖ£¬ÏÂÃæµõ×ÅÖØÁ¿Êʵ±µÄ¹³Â룻
£¨D£©¶Ï¿ªµçÔ´£¬È¡ÏÂÖ½´ø£»
£¨E£©½«Æ½°åÒ»¶Ȩ̈¸ß£¬ÇáÍÆС³µ£¬Ê¹Ð¡³µÇ¡ÄÜÔÚƽ°åÉÏ×÷ÔÈËÙÔ˶¯£»
£¨F£©½«Ö½´ø¹Ì¶¨ÔÚС³µÎ²²¿£¬²¢´©¹ý´òµã¼ÆʱÆ÷µÄÏÞλ¿×£»
£¨G£©»»ÉÏеÄÖ½´ø£¬ÔÙÖظ´×öÁ½Èý´Î£®

£¨2£©¡¢Ä³Í¬Ñ§ÀûÓôòµã¼ÆʱÆ÷Ëù¼Ç¼µÄÖ½´øÀ´Ñо¿×öÔȱäËÙÖ±ÏßÔ˶¯Ð¡³µµÄÔ˶¯Çé¿ö£¬ÊµÑéÖлñµÃÒ»ÌõÖ½´ø£¬ÈçͼÈýËùʾ£¬ÆäÖÐÁ½ÏàÁÚ¼ÆÊýµã¼äÓÐËĸöµãδ»­³ö£®ÒÑÖªËùÓõçÔ´µÄƵÂÊΪ50HZ£¬Ôò´òAµãʱС³µÔ˶¯µÄËÙ¶ÈvA=______m/s£¬Ð¡³µÔ˶¯µÄ¼ÓËÙ¶Èa=______m/s2£®£¨½á¹ûÒªÇó±£ÁôÈýλÓÐЧÊý×Ö£©
¡¾´ð°¸¡¿·ÖÎö£º¸ù¾ÝÔȱäËÙÖ±ÏßÔ˶¯ÖÐʱ¼äÖеãµÄËٶȵÈÓڸùý³ÌÖеÄƽ¾ùËٶȣ¬¿ÉÒÔÇó³ö´òÖ½´øÉÏAµãʱС³µµÄ˲ʱËٶȴóС£¬¸ù¾ÝÔȱäËÙÖ±ÏßÔ˶¯µÄÍÆÂÛ¹«Ê½¡÷x=aT2¿ÉÒÔÇó³ö¼ÓËٶȵĴóС£®
½â´ð£º½â£º£¨1£©ÔڲⶨÔȱäËÙÖ±ÏßÔ˶¯¼ÓËٶȵÄʵÑéÖУ¬ÊµÑé¹ý³Ì²½ÖèÈçÏ£º
Ê×ÏȽ«´òµã¼ÆʱÆ÷¹Ì¶¨ÔÚƽ°åÉÏ£¬²¢½ÓºÃµç·£»ÔÙ½«Ö½´ø¹Ì¶¨ÔÚС³µÎ²²¿£¬²¢´©¹ý´òµã¼ÆʱÆ÷µÄÏÞλ¿×£¬È»ºó½«Æ½°åÒ»¶Ȩ̈¸ß£¬ÇáÍÆС³µ£¬Ê¹Ð¡³µÇ¡ÄÜÔÚƽ°åÉÏ×÷ÔÈËÙÔ˶¯£¬´Ë²½ÖèÊÇΪÁËƽºâĦ²ÁÁ¦£»°ÑÒ»ÌõϸÉþË©ÔÚС³µÉÏ£¬Ï¸Éþ¿ç¹ý¶¨»¬ÂÖ£¬ÏÂÃæµõ×ÅÖØÁ¿Êʵ±µÄ¹³Â룻 À­×¡Ö½´ø£¬½«Ð¡³µÒÆÖÁ¿¿½ü´òµã¼ÆʱÆ÷´¦£¬ÏȽÓͨµçÔ´£¬ºó·Å¿ªÖ½´ø£»¶Ï¿ªµçÔ´£¬È¡ÏÂÖ½´ø£»×îºó»»ÉÏеÄÖ½´ø£¬ÔÙÖظ´×öÁ½Èý´Î£®
ËùÒÔʵÑé²½ÖèÕýÈ·µÄÊÇ£ºBFECADG
£¨2£©ÓÉÓÚÁ½ÏàÁÚ¼ÆÊýµã¼äÓÐËĸöµãδ»­³ö£¬ËùÒÔÏàÁڵļÆÊýµã¼äµÄʱ¼ä¼ä¸ôT=0.1s£¬¸ù¾ÝÔȱäËÙÖ±ÏßÔ˶¯ÖÐʱ¼äÖеãµÄËٶȵÈÓڸùý³ÌÖеÄƽ¾ùËٶȣ¬
µÃ£ºvA==m/s=0.337m/s
¸ù¾ÝÔȱäËÙÖ±ÏßÔ˶¯µÄÍÆÂÛ¹«Ê½¡÷x=aT2¿ÉÒÔÇó³ö¼ÓËٶȵĴóС£¬
µÃ£ºx3-x1=2a1T2 
x4-x2=2a2T2 
ΪÁ˸ü¼Ó׼ȷµÄÇó½â¼ÓËٶȣ¬ÎÒÃǶÔÈý¸ö¼ÓËÙ¶Èȡƽ¾ùÖµ
µÃ£ºa=£¨a1+a2£©
¼´Ð¡³µÔ˶¯µÄ¼ÓËٶȼÆËã±í´ïʽΪ£º
a==m/s2=0.393m/s2
¹Ê´ð°¸Îª£ºBFECADG£¬0.337£¬0.393
µãÆÀ£ºÒªÌá¸ßÓ¦ÓÃÔȱäËÙÖ±ÏߵĹæÂÉÒÔ¼°ÍÆÂÛ½â´ðʵÑéÎÊÌâµÄÄÜÁ¦£¬ÔÚƽʱÁ·Ï°ÖÐÒª¼ÓÇ¿»ù´¡ÖªÊ¶µÄÀí½âÓëÓ¦Óã®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨1£©¡¢ÔڲⶨÔȱäËÙÖ±ÏßÔ˶¯¼ÓËٶȵÄʵÑéÖУ¬½«ÒÔϲ½ÖèµÄ´úºÅ°´ºÏÀí˳ÐòÌî¿ÕдÔÚºáÏßÉÏ£º
BFECADG
BFECADG
£®
£¨A£©À­×¡Ö½´ø£¬½«Ð¡³µÒÆÖÁ¿¿½ü´òµã¼ÆʱÆ÷´¦£¬ÏȽÓͨµçÔ´£¬ºó·Å¿ªÖ½´ø£»
£¨B£©½«´òµã¼ÆʱÆ÷¹Ì¶¨ÔÚƽ°åÉÏ£¬²¢½ÓºÃµç·£»
£¨C£©°ÑÒ»ÌõϸÉþË©ÔÚС³µÉÏ£¬Ï¸Éþ¿ç¹ý¶¨»¬ÂÖ£¬ÏÂÃæµõ×ÅÖØÁ¿Êʵ±µÄ¹³Â룻
£¨D£©¶Ï¿ªµçÔ´£¬È¡ÏÂÖ½´ø£»
£¨E£©½«Æ½°åÒ»¶Ȩ̈¸ß£¬ÇáÍÆС³µ£¬Ê¹Ð¡³µÇ¡ÄÜÔÚƽ°åÉÏ×÷ÔÈËÙÔ˶¯£»
£¨F£©½«Ö½´ø¹Ì¶¨ÔÚС³µÎ²²¿£¬²¢´©¹ý´òµã¼ÆʱÆ÷µÄÏÞλ¿×£»
£¨G£©»»ÉÏеÄÖ½´ø£¬ÔÙÖظ´×öÁ½Èý´Î£®

£¨2£©¡¢Ä³Í¬Ñ§ÀûÓôòµã¼ÆʱÆ÷Ëù¼Ç¼µÄÖ½´øÀ´Ñо¿×öÔȱäËÙÖ±ÏßÔ˶¯Ð¡³µµÄÔ˶¯Çé¿ö£¬ÊµÑéÖлñµÃÒ»ÌõÖ½´ø£¬ÈçͼÈýËùʾ£¬ÆäÖÐÁ½ÏàÁÚ¼ÆÊýµã¼äÓÐËĸöµãδ»­³ö£®ÒÑÖªËùÓõçÔ´µÄƵÂÊΪ50HZ£¬Ôò´òAµãʱС³µÔ˶¯µÄËÙ¶ÈvA=
0.337
0.337
m/s£¬Ð¡³µÔ˶¯µÄ¼ÓËÙ¶Èa=
0.393
0.393
m/s2£®£¨½á¹ûÒªÇó±£ÁôÈýλÓÐЧÊý×Ö£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2013½ì¹ã¶«Ê¡ÖÐɽһÖиßÈýÉÏѧÆÚµÚ¶þ´ÎͳÁ·ÎïÀíÊÔ¾í£¨´ø½âÎö£© ÌâÐÍ£ºÊµÑéÌâ

(1) .ijͬѧÔڲⶨÔȱäËÙÖ±ÏßÔ˶¯µÄ¼ÓËÙ¶Èʱ£¬µÃµ½Á˼¸Ìõ½ÏΪÀíÏëµÄÖ½´ø£¬ÒÑÖªÔÚÿÌõÖ½´øÿ5¸ö¼ÆʱµãÈ¡ºÃÒ»¸ö¼ÆÊýµã£¬Á½¸ö¼ÆÊýµãÖ®¼äµÄʱ¼ä¼ä¸ôΪ0.1s£¬ÒÀ´òµãʱ¼ä˳Ðò±àºÅΪ0¡¢1¡¢2¡¢3¡¢4¡¢5£¬ÓÉÓÚ²»Ð¡ÐÄ£¬Ö½´ø±»Ëº¶ÏÁË£¬ÈçÏÂͼËùʾ.Çë¸ù¾Ý¸ø³öµÄA¡¢B¡¢C¡¢DËĶÎÖ½´ø»Ø´ð£¨¼ÆËã½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©:

¢ÙÔÚB¡¢C¡¢DÈý¶ÎÖ½´øÖÐÑ¡³ö´ÓÖ½´øAÉÏ˺ϵÄÄǶÎÓ¦ÊÇ______.
¢Ú´òAÖ½´øʱ£¬ÎïÌåµÄ¼ÓËٶȴóСÊÇ___________.
¢Ûµã1µÄËٶȴóСÊÇ_____________.
(2).¹ØÓÚ´òµã¼ÆʱÆ÷µÄʹÓã¬ÏÂÁÐ˵·¨ÖÐÕýÈ·µÄÊÇ(       ).
(A)´òµã¼ÆʱÆ÷Ó¦ÓõÍѹ½»Á÷µçÔ´£¬½»Á÷µçƵÂÊΪ50Hz
(B)Ö½´ø´©¹ýÏÞλ¿×£¬²¢±ØÐë°ÑÖ½´øѹÔÚ¸´Ð´Ö½µÄÉÏÃæ
(C)ÒªÏÈͨµç£¬ºóÊÍ·ÅÖ½´ø£¬Ö½´øͨ¹ýºóÁ¢¼´ÇжϵçÔ´
(D)Ϊ¼õСĦ²Á£¬Ã¿´Î²âÁ¿Ó¦ÏȽ«Ö½´øÀí˳
(3) .Ò»¸öʵÑéС×éÔÚ¡°Ì½¾¿µ¯Á¦ºÍµ¯»ÉÉ쳤µÄ¹Øϵ¡±µÄʵÑéÖУ¬Ê¹ÓÃÁ½Ìõ²»Í¬µÄÇáÖʵ¯»ÉaºÍb£¬µÃµ½µ¯Á¦Ó뵯»É³¤¶ÈµÄͼÏóÈçͼËùʾ¡£ÏÂÁбíÊöÕýÈ·µÄÊÇ£¨   £©

A£®aµÄÔ­³¤±ÈbµÄ³¤
B£®aµÄ¾¢¶ÈϵÊý±ÈbµÄ´ó
C£®aµÄ¾¢¶ÈϵÊý±ÈbµÄС
D£®²âµÃµÄµ¯Á¦Ó뵯»ÉµÄ³¤¶È³ÉÕý±È
(4).ijͬѧ×ö¡°ÑéÖ¤Á¦µÄƽÐÐËıßÐζ¨Ôò¡±ÊµÑéʱ£¬Ö÷Òª²½ÖèÊÇ£º
A£®ÔÚ×ÀÉÏ·ÅÒ»¿é·½Ä¾°å£¬ÔÚ·½Ä¾°åÉÏÆÌÒ»ÕÅ°×Ö½£¬ÓÃͼ¶¤°Ñ°×Ö½¶¤ÔÚ·½Ä¾°åÉÏ
B£®ÓÃͼ¶¤°ÑÏðƤÌõµÄÒ»¶Ë¹Ì¶¨ÔÚ°åÉϵÄAµã£¬ÔÚÏðƤÌõµÄÁíÒ»¶ËË©ÉÏÁ½ÌõϸÉþ£¬Ï¸ÉþµÄÁíÒ»¶Ëϵ×ÅÉþÌ×
C£®ÓÃÁ½¸öµ¯»É³Ó·Ö±ð¹³×¡ÉþÌ×£¬»¥³É½Ç¶ÈµØÀ­ÏðƤÌõ£¬Ê¹ÏðƤÌõÉ쳤£¬½áµãµ½´ïijһλÖÃO£®¼Ç¼ÏÂOµãµÄλÖ㬶Á³öÁ½¸öµ¯»É³ÓµÄʾÊý
D£®°´Ñ¡ºÃµÄ±ê¶È£¬ÓÃǦ±ÊºÍ¿Ì¶È³ß×÷³öÁ½Ö»µ¯»É³ÓµÄÀ­Á¦F1ºÍF2µÄͼʾ£¬²¢ÓÃƽÐÐËıßÐζ¨ÔòÇó³öºÏÁ¦F
E£®Ö»ÓÃÒ»Ö»µ¯»É³Ó£¬Í¨¹ýϸÉþÌ×À­ÏðƤÌõʹÆäÉ쳤£¬¶Á³öµ¯»É³ÓµÄʾÊý£¬¼ÇÏÂϸÉþµÄ·½Ïò£¬°´Í¬Ò»±ê¶È×÷³öÕâ¸öÁ¦µÄͼʾ
F£®±È½ÏÁ¦ºÍFµÄ´óСºÍ·½Ïò£¬¿´ËüÃÇÊÇ·ñÏàͬ£¬µÃ³ö½áÂÛ¡£
ÉÏÊö²½ÖèÖУº¢ÙÓÐÖØÒªÒÅ©µÄ²½ÖèµÄÐòºÅÊÇ                ºÍ             £»
¢ÚÒÅ©µÄÄÚÈÝ·Ö±ðÊÇ                        ºÍ                   £®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2012-2013ѧÄê¹ã¶«Ê¡É½Ò»¸ßÈýÉÏѧÆÚµÚ¶þ´ÎͳÁ·ÎïÀíÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£ºÊµÑéÌâ

(1) .ijͬѧÔڲⶨÔȱäËÙÖ±ÏßÔ˶¯µÄ¼ÓËÙ¶Èʱ£¬µÃµ½Á˼¸Ìõ½ÏΪÀíÏëµÄÖ½´ø£¬ÒÑÖªÔÚÿÌõÖ½´øÿ5¸ö¼ÆʱµãÈ¡ºÃÒ»¸ö¼ÆÊýµã£¬Á½¸ö¼ÆÊýµãÖ®¼äµÄʱ¼ä¼ä¸ôΪ0.1s£¬ÒÀ´òµãʱ¼ä˳Ðò±àºÅΪ0¡¢1¡¢2¡¢3¡¢4¡¢5£¬ÓÉÓÚ²»Ð¡ÐÄ£¬Ö½´ø±»Ëº¶ÏÁË£¬ÈçÏÂͼËùʾ.Çë¸ù¾Ý¸ø³öµÄA¡¢B¡¢C¡¢DËĶÎÖ½´ø»Ø´ð£¨¼ÆËã½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©:

¢ÙÔÚB¡¢C¡¢DÈý¶ÎÖ½´øÖÐÑ¡³ö´ÓÖ½´øAÉÏ˺ϵÄÄǶÎÓ¦ÊÇ______.

¢Ú´òAÖ½´øʱ£¬ÎïÌåµÄ¼ÓËٶȴóСÊÇ___________.

¢Ûµã1µÄËٶȴóСÊÇ_____________.

(2).¹ØÓÚ´òµã¼ÆʱÆ÷µÄʹÓã¬ÏÂÁÐ˵·¨ÖÐÕýÈ·µÄÊÇ(       ).

(A)´òµã¼ÆʱÆ÷Ó¦ÓõÍѹ½»Á÷µçÔ´£¬½»Á÷µçƵÂÊΪ50Hz

(B)Ö½´ø´©¹ýÏÞλ¿×£¬²¢±ØÐë°ÑÖ½´øѹÔÚ¸´Ð´Ö½µÄÉÏÃæ

(C)ÒªÏÈͨµç£¬ºóÊÍ·ÅÖ½´ø£¬Ö½´øͨ¹ýºóÁ¢¼´ÇжϵçÔ´

(D)Ϊ¼õСĦ²Á£¬Ã¿´Î²âÁ¿Ó¦ÏȽ«Ö½´øÀí˳

(3) .Ò»¸öʵÑéС×éÔÚ¡°Ì½¾¿µ¯Á¦ºÍµ¯»ÉÉ쳤µÄ¹Øϵ¡±µÄʵÑéÖУ¬Ê¹ÓÃÁ½Ìõ²»Í¬µÄÇáÖʵ¯»ÉaºÍb£¬µÃµ½µ¯Á¦Ó뵯»É³¤¶ÈµÄͼÏóÈçͼËùʾ¡£ÏÂÁбíÊöÕýÈ·µÄÊÇ£¨   £©

A£®aµÄÔ­³¤±ÈbµÄ³¤

B£®aµÄ¾¢¶ÈϵÊý±ÈbµÄ´ó

C£®aµÄ¾¢¶ÈϵÊý±ÈbµÄС

D£®²âµÃµÄµ¯Á¦Ó뵯»ÉµÄ³¤¶È³ÉÕý±È

(4).ijͬѧ×ö¡°ÑéÖ¤Á¦µÄƽÐÐËıßÐζ¨Ôò¡±ÊµÑéʱ£¬Ö÷Òª²½ÖèÊÇ£º

A£®ÔÚ×ÀÉÏ·ÅÒ»¿é·½Ä¾°å£¬ÔÚ·½Ä¾°åÉÏÆÌÒ»ÕÅ°×Ö½£¬ÓÃͼ¶¤°Ñ°×Ö½¶¤ÔÚ·½Ä¾°åÉÏ

B£®ÓÃͼ¶¤°ÑÏðƤÌõµÄÒ»¶Ë¹Ì¶¨ÔÚ°åÉϵÄAµã£¬ÔÚÏðƤÌõµÄÁíÒ»¶ËË©ÉÏÁ½ÌõϸÉþ£¬Ï¸ÉþµÄÁíÒ»¶Ëϵ×ÅÉþÌ×

C£®ÓÃÁ½¸öµ¯»É³Ó·Ö±ð¹³×¡ÉþÌ×£¬»¥³É½Ç¶ÈµØÀ­ÏðƤÌõ£¬Ê¹ÏðƤÌõÉ쳤£¬½áµãµ½´ïijһλÖÃO£®¼Ç¼ÏÂOµãµÄλÖ㬶Á³öÁ½¸öµ¯»É³ÓµÄʾÊý

D£®°´Ñ¡ºÃµÄ±ê¶È£¬ÓÃǦ±ÊºÍ¿Ì¶È³ß×÷³öÁ½Ö»µ¯»É³ÓµÄÀ­Á¦F1ºÍF2µÄͼʾ£¬²¢ÓÃƽÐÐËıßÐζ¨ÔòÇó³öºÏÁ¦F

E£®Ö»ÓÃÒ»Ö»µ¯»É³Ó£¬Í¨¹ýϸÉþÌ×À­ÏðƤÌõʹÆäÉ쳤£¬¶Á³öµ¯»É³ÓµÄʾÊý£¬¼ÇÏÂϸÉþµÄ·½Ïò£¬°´Í¬Ò»±ê¶È×÷³öÕâ¸öÁ¦µÄͼʾ

F£®±È½ÏÁ¦ºÍFµÄ´óСºÍ·½Ïò£¬¿´ËüÃÇÊÇ·ñÏàͬ£¬µÃ³ö½áÂÛ¡£

ÉÏÊö²½ÖèÖУº¢ÙÓÐÖØÒªÒÅ©µÄ²½ÖèµÄÐòºÅÊÇ                ºÍ             £»

¢ÚÒÅ©µÄÄÚÈÝ·Ö±ðÊÇ                        ºÍ                   £®

 

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£ºÎÊ´ðÌâ

£¨1£©¡¢ÔڲⶨÔȱäËÙÖ±ÏßÔ˶¯¼ÓËٶȵÄʵÑéÖУ¬½«ÒÔϲ½ÖèµÄ´úºÅ°´ºÏÀí˳ÐòÌî¿ÕдÔÚºáÏßÉÏ£º______£®
£¨A£©À­×¡Ö½´ø£¬½«Ð¡³µÒÆÖÁ¿¿½ü´òµã¼ÆʱÆ÷´¦£¬ÏȽÓͨµçÔ´£¬ºó·Å¿ªÖ½´ø£»
£¨B£©½«´òµã¼ÆʱÆ÷¹Ì¶¨ÔÚƽ°åÉÏ£¬²¢½ÓºÃµç·£»
£¨C£©°ÑÒ»ÌõϸÉþË©ÔÚС³µÉÏ£¬Ï¸Éþ¿ç¹ý¶¨»¬ÂÖ£¬ÏÂÃæµõ×ÅÖØÁ¿Êʵ±µÄ¹³Â룻
£¨D£©¶Ï¿ªµçÔ´£¬È¡ÏÂÖ½´ø£»
£¨E£©½«Æ½°åÒ»¶Ȩ̈¸ß£¬ÇáÍÆС³µ£¬Ê¹Ð¡³µÇ¡ÄÜÔÚƽ°åÉÏ×÷ÔÈËÙÔ˶¯£»
£¨F£©½«Ö½´ø¹Ì¶¨ÔÚС³µÎ²²¿£¬²¢´©¹ý´òµã¼ÆʱÆ÷µÄÏÞλ¿×£»
£¨G£©»»ÉÏеÄÖ½´ø£¬ÔÙÖظ´×öÁ½Èý´Î£®

¾«Ó¢¼Ò½ÌÍø

£¨2£©¡¢Ä³Í¬Ñ§ÀûÓôòµã¼ÆʱÆ÷Ëù¼Ç¼µÄÖ½´øÀ´Ñо¿×öÔȱäËÙÖ±ÏßÔ˶¯Ð¡³µµÄÔ˶¯Çé¿ö£¬ÊµÑéÖлñµÃÒ»ÌõÖ½´ø£¬ÈçͼÈýËùʾ£¬ÆäÖÐÁ½ÏàÁÚ¼ÆÊýµã¼äÓÐËĸöµãδ»­³ö£®ÒÑÖªËùÓõçÔ´µÄƵÂÊΪ50HZ£¬Ôò´òAµãʱС³µÔ˶¯µÄËÙ¶ÈvA=______m/s£¬Ð¡³µÔ˶¯µÄ¼ÓËÙ¶Èa=______m/s2£®£¨½á¹ûÒªÇó±£ÁôÈýλÓÐЧÊý×Ö£©

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸