ÔÚ¡°ÑéÖ¤»úеÄÜÊغ㶨ÂÉ¡±µÄʵÑéÖУ¬´òµã¼ÆʱÆ÷ËùÓõçÔ´µÄƵÂÊΪ50 Hz£¬µ±µØÖØÁ¦¼ÓËٶȵÄֵΪ9.80 £¬ËùÓÃÖØÎïµÄÖÊÁ¿Îª1.00 kg

Èô°´ÊµÑéÒªÇóÕýÈ·µØÑ¡³öÖ½´ø½øÐвâÁ¿£¬Á¿µÃÁ¬ÐøÈýµãA¡¢B¡¢Cµ½µÚÒ»¸öµãµÄ¾àÀëÈçͼËùʾ(ÏàÁÚ¼ÆÊýµãʱ¼ä¼ä¸ôΪ0.02 s)£¬ÄÇô£º

(1)Ö½´øµÄ________¶ËÓëÖØÎïÏàÁ¬£»

(2)´òµã¼ÆʱÆ÷´òϼÆÊýµãBʱ£¬ÎïÌåµÄËÙ¶ÈvB£½_______________ m/s£»

(3)´ÓÆðµãOµ½´òϼÆÊýµãBµÄ¹ý³ÌÖÐÖØÁ¦ÊÆÄܼõÉÙÁ¿ÊǦ¤Ep£½________J£¬´Ë¹ý³ÌÖÐÎïÌ嶯ÄܵÄÔö¼ÓÁ¿¦¤Ek£½________J(È¡g£½9.8 )£»

(4)ͨ¹ý¼ÆË㣬ÊýÖµÉϦ¤Ep________¦¤Ek(Ìî¡°£¾¡±¡¢¡°£½¡±»ò¡°£¼¡±)£¬ÕâÊÇÒòΪ________________________________________________________________________£»

£¨5£©ÊµÑéµÄ½áÂÛÊÇ ¡£

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2015-2016ѧÄ꼪ÁÖ·öÓàµÚÒ»ÖÐѧÉÏÆÚµÚÒ»´ÎÔ¿¼ÎïÀí¾í£¨½âÎö°æ£© ÌâÐÍ£ºÑ¡ÔñÌâ

ijÈËÑØ×Ű뾶Ϊ RµÄˮƽԲÖÜÅܵÀÅÜÁË1£®75Ȧʱ£¬ËûµÄ £¨ £©

A£®Â·³ÌºÍλÒƵĴóС¾ùΪ3£®5¦ÐR

B£®Â·³ÌºÍλÒƵĴóС¾ùΪR

C£®Â·³ÌΪ3£®5¦ÐR¡¢Î»ÒƵĴóСΪR

D£®Â·³ÌΪ0£®5¦ÐR¡¢Î»ÒƵĴóСΪR

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2015-2016ѧÄêºÓ±±¼½ÖÝÖÐѧÉÏÆÚµÚÒ»´ÎÔ¿¼¸ß¶þÄ꼶ÎïÀí¾í£¨½âÎö°æ£© ÌâÐÍ£ºÑ¡ÔñÌâ

ÈçͼËùʾ£¬´ø¼ýÍ·µÄÏ߶αíʾijһµç³¡Öеĵ糡Ïߵķֲ¼Çé¿ö£®Ò»´øµçÁ£×ÓÔڵ糡ÖÐÔ˶¯µÄ¹ì¼£ÈçͼÖÐÐéÏßËùʾ£®Èô²»¿¼ÂÇÆäËüÁ¦£¬ÔòÏÂÁÐÅжÏÖÐÕýÈ·µÄÊÇ£¨ £©

A£®ÈôÁ£×ÓÊÇ´ÓAÔ˶¯µ½B£¬ÔòÁ£×Ó´øÕýµç£»ÈôÁ£×ÓÊÇ´ÓBÔ˶¯µ½A£¬ÔòÁ£×Ó´ø¸ºµç

B£®²»ÂÛÁ£×ÓÊÇ´ÓAÔ˶¯µ½B£¬»¹ÊÇ´ÓBÔ˶¯µ½A£¬Á£×ӱشø¸ºµç

C£®ÈôÁ£×ÓÊÇ´ÓBÔ˶¯µ½A£¬ÔòÆäËٶȼõС

D£®ÈôÁ£×ÓÊÇ´ÓBÔ˶¯µ½A£¬ÔòÆä¼ÓËÙ¶ÈÔö´ó

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2016½ìºÓÄÏÉÂÖÝÖÐѧ¸ßÈýÉÏÆÚµÚÒ»´ÎÔ¿¼ÎïÀí¾í£¨½âÎö°æ£© ÌâÐÍ£º¼ÆËãÌâ

£¨10·Ö£©ÈçͼËùʾ£¬³¤ÎªL¡¢Äڱڹ⻬µÄÖ±¹ÜÓëˮƽµØÃæ³É30¡ã½Ç¹Ì¶¨·ÅÖ᣽«Ò»ÖÊÁ¿ÎªmµÄСÇò¹Ì¶¨Ôڹܵף¬ÓÃÒ»ÇáÖʹ⻬ϸÏß½«Ð¡ÇòÓëÖÊÁ¿ÎªM=kmµÄСÎï¿éÏàÁ¬£¬Ð¡Îï¿éÐü¹ÒÓڹܿڡ£ÏÖ½«Ð¡ÇòÊÍ·Å£¬Ò»¶Îʱ¼äºó£¬Ð¡Îï¿éÂäµØ¾²Ö¹²»¶¯£¬Ð¡Çò¼ÌÐøÏòÉÏÔ˶¯£¬Í¨¹ý¹Ü¿ÚµÄתÏò×°Öúó×öƽÅ×Ô˶¯£¬Ð¡ÇòÔÚתÏò¹ý³ÌÖÐËÙÂʲ»±ä¡£(ÖØÁ¦¼ÓËÙ¶ÈΪg)

(1)ÇóСÎï¿éÏÂÂä¹ý³ÌÖеļÓËٶȴóС£»

(2)ÇóСÇò´Ó¹Ü¿ÚÅ׳öʱµÄËٶȴóС£»

(3)ÊÔÖ¤Ã÷СÇòƽÅ×Ô˶¯µÄˮƽλÒÆ×ÜСÓÚ

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2016½ìºÓÄÏÉÂÖÝÖÐѧ¸ßÈýÉÏÆÚµÚÒ»´ÎÔ¿¼ÎïÀí¾í£¨½âÎö°æ£© ÌâÐÍ£ºÑ¡ÔñÌâ

Ò»°ãµÄÇúÏßÔ˶¯¿ÉÒԷֳɺܶàС¶Î£¬Ã¿Ð¡¶Î¶¼¿ÉÒÔ¿´³ÉÔ²ÖÜÔ˶¯µÄÒ»²¿·Ö£¬¼´°ÑÕûÌõÇúÏßÓÃһϵÁв»Í¬°ë¾¶µÄСԲ»¡À´´úÌæ¡£Èçͼ£¨a£©Ëùʾ£¬ÇúÏßÉϵÄAµãµÄÇúÂÊÔ²¶¨ÒåΪ£ºÍ¨¹ýAµãºÍÇúÏßÉϽôÁÚAµãÁ½²àµÄÁ½µã×÷Ò»Ô²£¬ÔÚ¼«ÏÞÇé¿öÏ£¬Õâ¸öÔ²¾Í½Ð×öAµãµÄÇúÂÊÔ²£¬Æä°ë¾¶¦Ñ½Ð×öAµãµÄÇúÂʰ뾶¡£ÏÖ½«Ò»ÎïÌåÑØÓëˮƽÃæ³É¦Á½ÇµÄ·½ÏòÒÑËٶȦÔ0Å׳ö£¬Èçͼ£¨b£©Ëùʾ¡£ÔòÔÚÆä¹ì¼£×î¸ßµãP´¦µÄÇúÂʰ뾶ÊÇ

A£® B£®

C£® D£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2016½ì¼ªÁÖ·öÓàµÚÒ»ÖÐѧ¸ßÈýÉÏÆÚµÚÒ»´ÎÔ¿¼ÎïÀí¾í£¨½âÎö°æ£© ÌâÐÍ£ºÑ¡ÔñÌâ

ÎïÌå×öƽÅ×Ô˶¯£¬ÏÂÁÐ˵·¨ÖÐÕýÈ·µÄÊÇ£¨ £©

A.ƽÅ×Ô˶¯ÊÇÔȱäËÙÇúÏßÔ˶¯

B£®´Óͬһ¸ß¶ÈÒÔ²»Í¬ËÙ¶ÈˮƽÅ׳öµÄÎïÌ壬ÔÚ¿ÕÖеÄÔ˶¯Ê±¼ä²»Í¬

C£®ÒÔÏàͬËٶȴӲ»Í¬¸ß¶ÈˮƽÅ׳öµÄÎïÌ壬ÔÚ¿ÕÖеÄÔ˶¯Ê±¼äÏàͬ

D£®Æ½Å׳õËÙ¶ÈÔ½´óµÄÎïÌ壬ˮƽλÒÆÒ»¶¨Ô½´ó

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2016½ìÕã½­ÉÜÐ˵ÚÒ»ÖÐѧ¸ßÈýÉÏÆÚÆÚÖп¼ÊÔÎïÀí¾í£¨½âÎö°æ£© ÌâÐÍ£ºÑ¡ÔñÌâ

ÈçͼËùʾ£¬ÖÊÁ¿ÎªmµÄÎïÌå(¿ÉÊÓΪÖʵã)ÒÔijһËٶȴÓAµã³åÉÏÇã½ÇΪ30¡ãµÄ¹Ì¶¨Ð±Ã棬ÆäÔ˶¯µÄ¼ÓËٶȴóСΪ£¬´ËÎïÌåÔÚбÃæÉÏÉÏÉýµÄ×î´ó¸ß¶ÈΪh£¬ÔòÔÚÕâ¸ö¹ý³ÌÖÐÎïÌå

A£®ÖØÁ¦ÊÆÄÜÔö¼ÓÁËmgh B£®¿Ë·þĦ²ÁÁ¦×ö¹¦mgh

C£®¶¯ÄÜËðʧÁËmgh D£®»úеÄÜËðʧÁË

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2016½ìËÄ´¨³É¶¼µÚÆßÖÐѧ¸ßÈýÉÏÆÚÆÚÖп¼ÊÔÎïÀí¾í£¨½âÎö°æ£© ÌâÐÍ£ºÑ¡ÔñÌâ

ÈçͼËùʾ¡¢Èý½ÇÐδ«ËÍ´øÒÔ1m/sµÄËÙ¶È˳ʱÕëÔÈËÙת¶¯£¬Á½±ßµÄ´«ËÍ´ø³¤¶¼ÊÇ 2mÇÒˮƽ·½ÏòµÄ¼Ð½Ç¾ùΪ 37¡ã¡£ÏÖÓÐÁ½¸öÖÊÁ¿ÏàͬµÄСÎï¿éA¡¢B´Ó´«½ø´ø¶¥¶Ë¶¼ÒÔ1m/sµÄ³õËÙ¶ÈÑØ´«ËÍ´øÏ»¬£¬Îï¿éÓë´«ËÍ´ø¼äµÄ¶¯Ä¦²ÁÒòÊý¶¼ÊÇ 0.5£¬È¡g=10m/s2£¬2sin37¡ã=0.6£¬cos37¡ã=0.8¡£ÏÂÁÐÅжÏÕýÈ·µÄÊÇ

A.Îï¿éA¡¢Bͬʱ´ï´«ËÍ´øµ×¶Ë

B.´«ËÍ´ø¶ÔÎï¿éA¡¢B¾ùÒ»Ö±×ö¸º¹¦

C.Îï¿éA¡¢B¶Ô´«ËÍ´ø¾ùÒ»Ö±×ö¸º¹¦

D.Îï¿éAÓë´«ËÍ´ø¼äĦ²Á²úÉúµÄÈÈÁ¿Ð¡ÓÚBÓë´«ËÍ´ø¼äĦ²Á²úÉúµÄÈÈÁ¿

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2016½ì¹ãÎ÷¹ðÁÖÊ®°ËÖиßÈýÉÏÆÚµÚÈý´ÎÔ¿¼ÎïÀí¾í£¨½âÎö°æ£© ÌâÐÍ£ºÑ¡ÔñÌâ

Ò»¸öÖÊÁ¿Îª2kgµÄÎïÌ壬ÔÚÁù¸öºã¶¨µÄ¹²µãÁ¦×÷ÓÃÏ´¦ÓÚƽºâ״̬£®ÏÖͬʱ³·È¥´óС·Ö±ðΪ15NºÍ20NµÄÁ½¸öÁ¦£¬¹ØÓڴ˺ó¸ÃÎïÌåÔ˶¯µÄ˵·¨ÖÐÕýÈ·µÄÊÇ

A£®Ò»¶¨×öÔȱäËÙÖ±ÏßÔ˶¯£¬¼ÓËٶȴóС¿ÉÄÜÊÇ5m/s2

B£®¿ÉÄÜ×öÔȼõËÙÖ±ÏßÔ˶¯£¬¼ÓËٶȴóСÊÇ2m/s2

C£®Ò»¶¨×öÔȱäËÙÔ˶¯£¬¼ÓËٶȴóС¿ÉÄÜÊÇ15m/s2

D£®¿ÉÄÜ×öÔÈËÙÔ²ÖÜÔ˶¯£¬ÏòÐļÓËٶȴóС¿ÉÄÜÊÇ5m/s2

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸