£¨1£©ÔÚ¡°ÀûÓôòµã¼ÆʱÆ÷²â¶¨ÔȱäËÙÖ±ÏßÔ˶¯¼ÓËٶȡ±µÄʵÑéÖУ¬´òµã¼ÆʱÆ÷½ÓÔÚ50HzµÄµÍѹ½»±äµçÔ´ÉÏ£¬Ä³Í¬Ñ§ÔÚ´ò³öµÄÖ½´øÉÏ°´´òµãµÄÏȺó˳Ðòÿ5µãÈ¡Ò»¸ö¼ÆÊýµã£¬¹²È¡ÁËA¡¢B¡¢C¡¢D¡¢E¡¢FÁù¸ö¼ÆÊýµã£¨Ã¿ÏàÁÚÁ½¸ö¼ÆÊýµã¼ä»¹ÓÐËĸöµã£©£®´ÓAµã¿ªÊ¼ÔÚÿһ¸ö¼ÆÊýµã´¦½«Ö½´ø¼ô¿ª·Ö³ÉÎå¶Î£¨·Ö±ðΪa¡¢b¡¢c¡¢d¡¢e¶Î£©£¬½«ÕâÎå¶ÎÖ½´øÓɳ¤µ½¶Ì½ô¿¿µ«²»ÖصþµØÕ³ÔÚxOy×ø±êϵÖУ¬ÈçͼËùʾ£®

       ¢ÙÈô°Ñÿһ¶ÎÖ½´øµÄÓÒÉ϶ËÁ¬½ÓÆðÀ´£¬½á¹ûµÃµ½Ò»ÌõÇãбµÄÖ±Ïߣ¬ÈçͼËùʾ£¬ÓÉͼ¿ÉÖªÖ½´ø×ö             Ô˶¯£¬ÇÒÖ±ÏßÓë-x·½Ïò¼Ð½ÇÔ½´ó,˵Ã÷Ö½´øÔ˶¯µÄ      Ô½´ó£®

    ¢Ú´ÓµÚÒ»¸ö¼ÆÊýµãA¿ªÊ¼¼Æʱ£¬ÎªÇó³ö0.25sʱ¿ÌÖ½´øµÄ˲ʱËٶȣ¬ÐèÒª²â³öÄÄÒ»¶ÎÖ½´øµÄ³¤¶È£¿´ð£º____¡£

      ¢ÛÈô²âµÃa¶ÎÖ½´øµÄ³¤¶ÈΪ¡°10.0cm£¬e¶ÎÖ½´øµÄ³¤¶ÈΪ2.0cm£¬Ôò¿ÉÇó³ö¼ÓËٶȵĴóСΪ____m/s

¡¾Ïê½â¡¿£¨1£©Ö½´øµÄ¸ß¶ÈÖ®±ÈµÈÓÚÖмäʱ¿ÌËÙ¶ÈÖ®±È£¬Ò²¾ÍÊÇ˵ͼÖÐa¶ÎÖ½´ø¸ß¶È´ú±í0.05sʱµÄ˲ʱËٶȣ¬¼´Í¼ÖÐaÖ½´øµÄÖеã´ú±í0.05sÃëÄ©£¬bÖ½´ø¸ß¶È´ú±í0.15sʱµÄ˲ʱËٶȣ¬¼´Í¼ÖÐbÖ½´øµÄÖеã´ú±í0.15sÃëÄ©£¬cÖ½´ø¸ß¶È´ú±í0.25sʱµÄ˲ʱËٶȣ¬¼´Í¼ÖÐcÖ½´øµÄÖеã´ú±í0.25sÃëÄ©£¬dµÄ¸ß¶È´ú±í0.35sʱµÄ˲ʱËٶȣ¬¼´Í¼ÖÐdÖ½´øµÄÖеã´ú±í0.35sÃëÄ©£¬eÖ½´ø¸ß¶È´ú±í0.45sʱµÄ˲ʱËٶȣ¬¼´Í¼ÖУ¬dÖ½´øµÄÖеã´ú±í0.45sÃëÄ©£®ÎªÇó³ö0.25sʱ¿ÌµÄ˲ʱËٶȣ¬ÐèÒª²â³öc¶ÎÖ½´øµÄ³¤¶È£®

Èô²âµÃa¶ÎÖ½´øµÄ³¤¶ÈΪ10.0cm£¬Ôòv0.05=0.2m/s£¬e¶ÎÖ½´øµÄ³¤¶ÈΪ2.0cm£¬v0.45=1.0m/s£¬Ôò¿ÉÇó³ö¼ÓËٶȵĴóСΪ£ºa=2.0m/s2   

  

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ÔÚ¡°ÀûÓôòµã¼ÆʱÆ÷²â¶¨ÔȼÓËÙÖ±ÏßÔ˶¯¼ÓËٶȡ±µÄʵÑéÖУ¬Ä³Í¬Ñ§ÔÚ´ò³öµÄÖ½´øÉÏÿ5µãÈ¡Ò»¸ö¼ÆÊýµã£¬¹²È¡ÁËA¡¢B¡¢C¡¢D¡¢EÁù¸ö¼ÆÊýµã£¨Ã¿ÏàÁÚÁ½¸ö¼ÆÊýµã¼äµÄËĸöµãδ»­³ö£©Èçͼ£®

£¨1£©´ÓµÚÒ»¸ö¼ÆÊýµã¿ªÊ¼¼Æʱ£¬ÒªÏëÇó³ö0.15sʱ¿ÌµÄ˲ʱËٶȣ¬ÐèÒª²â³öÄÄÒ»¶ÎÖ½´øµÄ³¤¶È£¿´ð£º
BC
BC
£®
£¨2£©Èô²âµÃAB¶ÎÖ½´øµÄ³¤¶ÈΪ2.0cm£¬DE¶ÎÖ½´øµÄ³¤¶ÈΪ10.0cm£¬ÔòÎïÌåµÄ¼ÓËÙ¶ÈΪ
2.7
2.7
m/s2£¨½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ÔÚ¡°ÀûÓôòµã¼ÆʱÆ÷²â¶¨ÔȼÓËÙÖ±ÏßÔ˶¯¼ÓËٶȡ±µÄʵÑéÖУ¬´òµã¼ÆʱÆ÷½ÓÔÚ50HZµÄµÍѹ½»±äµçÔ´ÉÏ£®Ä³Í¬Ñ§ÔÚ´ò³öµÄÖ½´øÉÏÿ5µãÈ¡Ò»¸ö¼ÆÊýµã£¬¹²È¡ÁËA¡¢B¡¢C¡¢D¡¢E¡¢FÁù¸ö¼ÆÊýµã£¨Ã¿ÏàÁÚÁ½¸ö¼ÆÊýµã¼äµÄËĸöµãδ»­³ö£©£®´Óÿһ¸ö¼ÆÊýµã´¦½«Ö½´ø¼ô¿ª·Ö³ÉÎå¶Î£¨·Ö±ðΪa¡¢b¡¢c¡¢d¡¢e¶Î£©£¬½«ÕâÎå¶ÎÖ½´øÓɶ̵½³¤½ô¿¿µ«²»ÖصþµØÕ³ÔÚxoy×ø±êϵÖУ¬Èçͼ2Ëùʾ£¬ÓÉ´Ë¿ÉÒԵõ½Ò»Ìõ±íʾv-t¹ØϵµÄͼÏߣ¬´Ó¶øÇó³ö¼ÓËٶȵĴóС£®
£¨1£©´ÓµÚÒ»¸ö¼ÆÊýµã¿ªÊ¼¼Æʱ£¬ÎªÇó³ö0.15sʱ¿ÌµÄ˲ʱËٶȣ¬ÐèÒª²â³öÄÄÒ»¶ÎÖ½´øµÄ³¤¶È£¿´ð£º
b
b
£»
£¨2£©Èô²âµÃa¶ÎÖ½´øµÄ³¤¶ÈΪ2.0cm£¬e¶ÎÖ½´øµÄ³¤¶ÈΪ10.0cm£¬Ôò¿ÉÇó³ö¼ÓËٶȵĴóСΪ
2.0
2.0
m/s2£®£¨±£ÁôÁ½Î»ÓÐЧÊý×Ö£©
£¨3£©ÇëÄãÔÚxoy×ø±êϵÖÐÓÃ×î¼ò½àµÄ·½·¨×÷³öÄܱíʾv-t¹ØϵµÄͼÏߣ¨×÷´ðÔÚ´ðÌâ¾íͼÉÏ£©£¬²¢Ö¸³öÄĸöÖáÏ൱ÓÚvÖ᣿´ð£º
yÖáÏ൱ÓÚvÖá
yÖáÏ൱ÓÚvÖá
£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÔĶÁÀí½â

£¨2013?ÑĮ̀һģ£©£¨1£©ÔÚ¡°ÀûÓôòµã¼ÆʱÆ÷²â¶¨ÔȱäËÙÖ±ÏßÔ˶¯¼ÓËٶȡ±µÄʵÑéÖУ¬´òµã¼ÆʱÆ÷½ÓÔÚ50HzµÄµÍѹ½»±äµçÔ´ÉÏ£¬Ä³Í¬Ñ§ÔÚ´ò³öµÄÖ½´øÉÏ°´´òµãµÄÏȺó˳Ðòÿ5µãÈ¡Ò»¸ö¼ÆÊýµã£¬¹²È¡ÁËA¡¢B¡¢C¡¢D¡¢E¡¢FÁù¸ö¼ÆÊýµã£¨Ã¿ÏàÁÚÁ½¸ö¼ÆÊýµã¼ä»¹ÓÐËĸöµã£©£®´ÓAµã¿ªÊ¼ÔÚÿһ¸ö¼ÆÊýµã´¦½«Ö½´ø¼ô¿ª·Ö³ÉÎå¶Î£¨·Ö±ðΪa¡¢b¡¢c¡¢d¡¢e¶Î£©£¬½«ÕâÎå¶ÎÖ½´øÓɳ¤µ½¶Ì½ô¿¿µ«²»ÖصþµØÕ³ÔÚxOy×ø±êϵÖУ¬Èçͼ1Ëùʾ£®
¢ÙÈô°Ñÿһ¶ÎÖ½´øµÄÓÒÉ϶ËÁ¬½ÓÆðÀ´£¬½á¹ûµÃµ½Ò»ÌõÇãбµÄÖ±Ïߣ¬ÈçͼËùʾ£¬ÓÉͼ1¿ÉÖªÖ½´ø×ö
ÔȼõËÙÖ±Ïß
ÔȼõËÙÖ±Ïß
Ô˶¯£¬ÇÒÖ±ÏßÓë-x·½Ïò¼Ð½ÇÔ½´ó£¬ËµÃ÷Ö½´øÔ˶¯µÄ
¼ÓËÙ¶È
¼ÓËÙ¶È
Ô½´ó£®
¢Ú´ÓµÚÒ»¸ö¼ÆÊýµãA¿ªÊ¼¼Æʱ£¬ÎªÇó³ö0.25sʱ¿ÌÖ½´øµÄ˲ʱËٶȣ¬ÐèÒª²â³öÄÄÒ»¶ÎÖ½´øµÄ³¤¶È£¿´ð£º
c
c
£®
¢ÛÈô²âµÃa¶ÎÖ½´øµÄ³¤¶ÈΪ¡°10.0cm£¬e¶ÎÖ½´øµÄ³¤¶ÈΪ2.0cm£¬Ôò¿ÉÇó³ö¼ÓËٶȵĴóСΪ
2.0
2.0
m/s2£®
£¨2£©£¨7·Ö£©ÏÖÓÐÒ»ÖÖÌØÊâµÄµç³Ø£¬ËüµÄµç¶¯ÊÆEΪ9V×óÓÒ£¬ÄÚ×èr´óԼΪ40¦¸£¬ÎªÁ˲ⶨÕâ¸öµç³ØµÄµç¶¯ÊƺÍÄÚ×裬ijͬѧÀûÓÃÈçͼ2¼×ËùʾµÄµç·½øÐÐʵÑ飬ͼÖеçѹ±íµÄÁ¿³ÌΪ6V£¬ÄÚ×èΪ2K¦¸£¬R1Ϊµç×èÏ䣬×èÖµ·¶Î§0¡«999¦¸£¬R0Ϊ¶¨Öµµç×裮
¢ÙʵÑéÊÒ±¸ÓÐÒÔϼ¸ÖÖ¶¨Öµµç×èR0
A£® 10¦¸    B£®100¦¸    C£®200¦¸    D£®2000¦¸
ΪʹʵÑéÄÜ˳Àû½øÐÐӦѡÄÄÒ»ÖÖ£¿´ð
D
D
£®£¨Ìî×ÖĸÐòºÅ£©
¢Ú¸Ãͬѧ½ÓÈë·ûºÏÒªÇóµÄR0ºó£¬±ÕºÏ¿ª¹ØSµ÷Õûµç×èÏäµÄ×èÖµ£¬¶ÁÈ¡µçѹ±íµÄʾÊý£¬¼Ç¼¶à×éÊý¾Ý£¬×÷³öÁËÈçͼ2ÒÒËùʾµÄͼÏߣ®Ôò¸ù¾ÝͼÏß¿ÉÇóµÃ¸Ãµç³ØµÄµç¶¯ÊÆEΪ
10
10
V£¬ÄÚ×èrΪ
41.7
41.7
¦¸£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2013Äêɽ¶«Ê¡ÑĮ̀Êи߿¼ÎïÀíһģÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£ºÌî¿ÕÌâ

£¨1£©ÔÚ¡°ÀûÓôòµã¼ÆʱÆ÷²â¶¨ÔȱäËÙÖ±ÏßÔ˶¯¼ÓËٶȡ±µÄʵÑéÖУ¬´òµã¼ÆʱÆ÷½ÓÔÚ50HzµÄµÍѹ½»±äµçÔ´ÉÏ£¬Ä³Í¬Ñ§ÔÚ´ò³öµÄÖ½´øÉÏ°´´òµãµÄÏȺó˳Ðòÿ5µãÈ¡Ò»¸ö¼ÆÊýµã£¬¹²È¡ÁËA¡¢B¡¢C¡¢D¡¢E¡¢FÁù¸ö¼ÆÊýµã£¨Ã¿ÏàÁÚÁ½¸ö¼ÆÊýµã¼ä»¹ÓÐËĸöµã£©£®´ÓAµã¿ªÊ¼ÔÚÿһ¸ö¼ÆÊýµã´¦½«Ö½´ø¼ô¿ª·Ö³ÉÎå¶Î£¨·Ö±ðΪa¡¢b¡¢c¡¢d¡¢e¶Î£©£¬½«ÕâÎå¶ÎÖ½´øÓɳ¤µ½¶Ì½ô¿¿µ«²»ÖصþµØÕ³ÔÚxOy×ø±êϵÖУ¬Èçͼ1Ëùʾ£®
¢ÙÈô°Ñÿһ¶ÎÖ½´øµÄÓÒÉ϶ËÁ¬½ÓÆðÀ´£¬½á¹ûµÃµ½Ò»ÌõÇãбµÄÖ±Ïߣ¬ÈçͼËùʾ£¬ÓÉͼ1¿ÉÖªÖ½´ø×ö    Ô˶¯£¬ÇÒÖ±ÏßÓë-x·½Ïò¼Ð½ÇÔ½´ó£¬ËµÃ÷Ö½´øÔ˶¯µÄ    Ô½´ó£®
¢Ú´ÓµÚÒ»¸ö¼ÆÊýµãA¿ªÊ¼¼Æʱ£¬ÎªÇó³ö0.25sʱ¿ÌÖ½´øµÄ˲ʱËٶȣ¬ÐèÒª²â³öÄÄÒ»¶ÎÖ½´øµÄ³¤¶È£¿´ð£º    £®
¢ÛÈô²âµÃa¶ÎÖ½´øµÄ³¤¶ÈΪ¡°10.0cm£¬e¶ÎÖ½´øµÄ³¤¶ÈΪ2.0cm£¬Ôò¿ÉÇó³ö¼ÓËٶȵĴóСΪ    m/s2£®
£¨2£©£¨7·Ö£©ÏÖÓÐÒ»ÖÖÌØÊâµÄµç³Ø£¬ËüµÄµç¶¯ÊÆEΪ9V×óÓÒ£¬ÄÚ×èr´óԼΪ40¦¸£¬ÎªÁ˲ⶨÕâ¸öµç³ØµÄµç¶¯ÊƺÍÄÚ×裬ijͬѧÀûÓÃÈçͼ2¼×ËùʾµÄµç·½øÐÐʵÑ飬ͼÖеçѹ±íµÄÁ¿³ÌΪ6V£¬ÄÚ×èΪ2K¦¸£¬R1Ϊµç×èÏ䣬×èÖµ·¶Î§0¡«999¦¸£¬RΪ¶¨Öµµç×裮
¢ÙʵÑéÊÒ±¸ÓÐÒÔϼ¸ÖÖ¶¨Öµµç×èR
A£® 10¦¸    B£®100¦¸    C£®200¦¸    D£®2000¦¸
ΪʹʵÑéÄÜ˳Àû½øÐÐӦѡÄÄÒ»ÖÖ£¿´ð    £®£¨Ìî×ÖĸÐòºÅ£©
¢Ú¸Ãͬѧ½ÓÈë·ûºÏÒªÇóµÄRºó£¬±ÕºÏ¿ª¹ØSµ÷Õûµç×èÏäµÄ×èÖµ£¬¶ÁÈ¡µçѹ±íµÄʾÊý£¬¼Ç¼¶à×éÊý¾Ý£¬×÷³öÁËÈçͼ2ÒÒËùʾµÄͼÏߣ®Ôò¸ù¾ÝͼÏß¿ÉÇóµÃ¸Ãµç³ØµÄµç¶¯ÊÆEΪ    V£¬ÄÚ×èrΪ    ¦¸£®

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸