£¨1£©ÔÚ̽¾¿Ð¡³µËÙ¶ÈËæʱ¼ä±ä»¯µÄ¹æÂÉʵÑéÖУ¬ÔÚÏÂÁеÄÆ÷²ÄÖв»ÐèҪѡÓõÄÆ÷²ÄÓÐ
BDGJ
BDGJ
´úºÅÌîÔÚºáÏßÉÏ£®£©
A£®´òµã¼ÆʱÆ÷    B£®Ììƽ    C£®µÍѹ½»Á÷µçÔ´   D£®µÍѹֱÁ÷µçÔ´   E£®Ö½´øF£®Ð¡³µÓë¹³Âë    G£®Ãë±í    H£®Ò»¶Ë´øÓл¬Âֵij¤Ä¾°æ I£®¿Ì¶È³ß  J£®µ¯»É³Ó
£¨2£©ÈçͼΪÓôòµã¼ÆʱÆ÷´ò³öµÄһϵÁеãµÄÖ½´ø£¬Ö½´ø¹Ì¶¨ÔÚÒ»¸ö×öÔȼÓËÙÖ±ÏßÔ˶¯µÄС³µµÄºóÃ棬A¡¢B¡¢C¡¢D¡¢E¡¢FΪÔÚÖ½´øÉÏËùÑ¡µÄ¼ÇÊýµã£¬ÏàÁÚ¼ÇÊýµã¼äÓÐËĸöµãδ»­³ö£¬²âµÃAB=1.20cm£¬AC=3.20cm£¬AD=6.00cm£¬AE=9.60cm£¬AF=14.00cmÔò´òµã¼ÆʱÆ÷´òÏÂDµãʱС³µµÄ˲ʱËÙ¶ÈΪ
0.32
0.32
 m/s£¬Ð¡³µµÄ¼ÓËٶȴóСΪ
0.80
0.80
m/s2£¨±£ÁôÁ½Î»Ð¡Êý£©£®
·ÖÎö£º£¨1£©¸ù¾Ý´òµã¼ÆʱÆ÷¹¤×÷Ô­Àí£¬ÒÔ¼°ÊµÑéËùÒª²âÁ¿µÄÊý¾Ý¿ÉÕýÈ·½â´ð£»
£¨2£©¸ù¾ÝÔÚÔȱäËÙÖ±ÏßÔÈËÙÖÐʱ¼äÖеãµÄ˲ʱËٶȴóСµÈÓڸùý³ÌÖеÄƽ¾ùËٶȴóС¿ÉÒÔÇó³öijµãµÄ˲ʱËٶȴóС£»ÀûÓÃÖð²î·¨¿ÉÒÔÇó³öС³µµÄ¼ÓËٶȴóС£®
½â´ð£º½â£º£¨1£©±¾ÊµÑé̽¾¿µÄÊÇС³µËÙ¶ÈËæʱ¼ä±ä»¯µÄ¹æÂÉ£¬²»ÐèÒª²âÁ¿Ð¡³µµÄÖÊÁ¿£¬¹Ê²»ÐèÒªÌìƽ£¬´òµã¼ÆʱÆ÷ʹÓõÄÊǽ»Á÷µçÔ´£¬¹Ê²»ÐèÒªµÍѹֱÁ÷µçÔ´£¬´òµãʱÒѾ­¼Ç¼ÁËС³µÔ˶¯Ê±¼ä£¬¹Ê²»ÐèÒªÃë±í£¬¸ÃʵÑé²»ÊÇÑо¿ÍâÁ¦Óë¼ÓËٶȹØϵ£¬ÎÞÐ赯»É³Ó½øÐÐÁ¦µÄ²âÁ¿£¬¹Ê²»ÐèÒªµÄÆ÷²ÄÊÇBDGJ£®
¹Ê´ð°¸Îª£ºBDGJ£®
£¨2£©¸ù¾ÝÔÚÔȱäËÙÖ±ÏßÔÈËÙÖÐʱ¼äÖеãµÄ˲ʱËٶȴóСµÈÓڸùý³ÌÖеÄƽ¾ùËٶȴóС£¬ÓУº
vD=
xCE
2T
=
(9.60-3.20)cm
2¡Á0.1s
=0.32m/s

ÔÚÔȱäËÙÖ±ÏßÔ˶¯Öиù¾Ý¡÷x=aT2£¬ÆäÖС÷x=0.8cm£¬T=0.1s£¬´øÈë½âµÃa=0.80m/s2£®
¹Ê´ð°¸Îª£º0.32£¬0.80£®
µãÆÀ£º¶ÔÓÚÖ½´øÎÊÌâµÄ´¦Àí£¬ÎÒÃÇÒªÊìϤÔȱäËÙÖ±ÏßÔ˶¯µÄÌصãºÍһЩ¹æÂÉ£¬Ìá¸ßÓ¦Óûù±¾¹æÂɽâ´ðʵÑéÎÊÌâµÄÄÜÁ¦£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨1£©ÔÚ¡°Ì½¾¿Ð¡³µËÙ¶ÈËæʱ¼ä±ä»¯µÄ¹Øϵ¡±µÄʵÑéÖУ¬ËùÓý»Á÷µçµÄƵÂÊΪ50Hz£®Ä³´ÎʵÑéÖеõ½µÄÒ»ÌõÖ½´øÈçͼËùʾ£¬´Ó±È½ÏÇåÎúµÄµãÆð£¬Ã¿Îå¸öµãÈ¡Ò»¸öµã×÷Ϊ¼ÆÊýµã£¬·Ö±ð±êÃ÷0¡¢1¡¢2¡¢3¡¢4£®Á¿µÃx1=30.0mm£¬x2=36.0mm£¬x3=42.0mm£¬x4=48.0mm£¬Ôò´òµã2ʱС³µµÄ˲ʱËÙ¶ÈΪ
0.390
0.390
m/sºÍС³µµÄ¼ÓËÙ¶ÈΪ
0.600
0.600
m/s2£®£¨ÊµÑé½á¹û±£ÁôÈýλÓÐЧÊý×Ö£©
£¨2£©Ä³Í¬Ñ§ÔÚ¡°Ñо¿Ð¡³µµÄ¼ÓËÙ¶ÈÓëÍâÁ¦¹Øϵ¡±µÄ̽¾¿ÊµÑéÖУ¬Ê¹ÓÃÁ˹âµçÃÅ£®Ëû½«¹âµçÃŹ̶¨ÔÚ¹ìµÀÉϵÄijµãB£¬Óò»Í¬ÖØÁ¦µÄÎïÌåÀ­Ð¡³µ£¬µ«Ã¿´ÎС³µ´ÓͬһλÖÃAÓɾ²Ö¹ÊÍ·Å£¬²â³ö¶ÔÓ¦²»Í¬ÍâÁ¦Ê±Ð¡³µÉÏÕÚ¹â°åͨ¹ý¹âµçÃŵÄʱ¼ä¡÷t£¬È»ºó¾­¹ýÊý¾Ý·ÖÎö£¬µÃ³öF·´±ÈÓÚ¡÷t2£®ÔòËû¾ÍµÃ³öÎïÌåµÄ¼ÓËÙ¶ÈÕý±ÈÓÚÍâÁ¦µÄ½áÂÛ£®Çë¼òҪ˵Ã÷¸ÃͬѧÕâÑù×öµÄÀíÓÉ£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨1£©ÔÚ¡°Ì½¾¿Ð¡³µËÙ¶ÈËæʱ¼ä±ä»¯µÄ¹æÂÉ¡±ÊµÑéÖУ¬Óõ½µÄ²âÁ¿¹¤¾ßÊÇ£¨Óжþ¸ö£©
¿Ì¶È³ß¡¢´òµã¼ÆʱÆ÷
¿Ì¶È³ß¡¢´òµã¼ÆʱÆ÷
£»
£¨2£©ÔÚ¡°Ñé֤ţ¶ÙµÚ¶þ¶¨ÂÉ¡±ÊµÑéÖУ¬ÔÚ±£³ÖÀ­Á¦F=5N²»±äʱ£¬Ä³Í¬Ñ§¸ù¾Ý²â³öµÄÊý¾Ý£¬»­³öͼÏßÈçͼ£®µ«¸Ãͬѧδ±ê×¢ºá×ø±êËù¶ÔÓ¦µÄ·ûºÅ£¬ÇëÄãÔÚͼÖÐÀ¨ºÅ´¦²¹È«£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨1£©ÔÚ¡°Ì½¾¿Ð¡³µËÙ¶ÈËæʱ¼ä±ä»¯µÄ¹æÂÉ¡±ÊµÑéÖУ¬½«ÏÂÁв½ÖèµÄ´úºÅ°´ºÏÀí˳ÐòÌîдÔÚºáÏßÉÏ£º
BDACE
BDACE

A£®À­×¡Ö½´ø£¬½«Ð¡³µÒÆÖÁ¿¿½ü´òµã¼ÆʱÆ÷´¦£¬ÏȽÓͨµçÔ´£¬ºó·Å¿ªÖ½´ø
B£®½«´òµã¼ÆʱÆ÷¹Ì¶¨ÔÚƽ°åÉÏ£¬²¢½ÓºÃµç·£¬°ÑÒ»ÌõϸÉþË©ÔÚС³µÉÏ£¬Ï¸Éþ¿ç¹ý¶¨»¬ÂÖ£¬ÏÂÃæµõ×ÅÖØÁ¿Êʵ±µÄ¹³Âë
C£®¶Ï¿ªµçÔ´£¬È¡ÏÂÖ½´ø
D£®½«Ö½´ø¹Ì¶¨ÔÚС³µÎ²²¿£¬²¢´©¹ý´òµã¼ÆʱÆ÷µÄÏÞλ¿×
E£®»»ÉÏеÄÖ½´ø£¬ÔÙÖظ´×öÈý´Î
£¨2£©ÔÚÓôòµã¼ÆʱÆ÷×ö²â¶¨Ð¡³µ×öÔȱäËÙÖ±ÏßÔ˶¯µÄ¼ÓËÙ¶ÈʵÑéÖУ¬ÒÑÖª´òµã¼ÆʱÆ÷Ëù
ÓõĵçԴƵÂÊΪ50Hz£¬µÃµ½µÄÖ½´øÈçͼËùʾ£¬ÏàÁÚÁ½¸ö²âÁ¿µã¼ä»¹ÓÐ4¸ö´òµãδ»­³ö£®Ôò´òµã¼ÆʱÆ÷´òB µãʱС³µµÄ˲ʱËÙ¶ÈΪ
0.3
0.3
m/s£¬ÎïÌåÔ˶¯µÄ¼ÓËÙ¶ÈΪ
1.2
1.2
 m/s2£¬EF¼äµÄ¾àÀë¿ÉÄÜÊÇ
7.2
7.2
cm£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨1£©ÔÚ¡°Ì½¾¿Ð¡³µËÙ¶ÈËæʱ¼ä±ä»¯µÄ¹Øϵ¡±µÄʵÑéÖУ¬ËùÓý»Á÷µçµÄƵÂÊΪ50Hz£®Ä³´ÎʵÑéÖеõ½µÄÒ»ÌõÖ½´øÈçͼËùʾ£¬´Ó±È½ÏÇåÎúµÄµãÆð£¬Ã¿Îå¸öµãÈ¡Ò»¸öµã×÷Ϊ¼ÆÊýµã£¬·Ö±ð±êÃ÷0¡¢1¡¢2¡¢3¡¢4£®Á¿µÃx1=30.0mm£¬x2=36.1mm£¬x3=41.9mm£¬x4=47.8mm£¬Ôò´òµã2ʱС³µµÄ˲ʱËÙ¶ÈΪ
 
m/s£¬Ð¡³µµÄ¼ÓËÙ¶ÈΪ
 
m/s2£®£¨½á¹û±£Áôµ½Ð¡ÊýµãºóÁ½Î»£©
¾«Ó¢¼Ò½ÌÍø
£¨2£©£®Ä³Í¬Ñ§ÔÚ×ö²â¶¨ÔȱäËÙÖ±ÏßÔ˶¯µÄ¼ÓËٶȵÄʵÑéÖУ¬´òµã¼ÆʱÆ÷²ÉÓõÄÊÇ
 
£¨Ñ¡¡°½»Á÷¡±»ò¡°Ö±Á÷¡±£©µçÔ´£¬µÃµ½Á˼¸ÌõÖ½´ø£¬´ÓÖÐÑ¡È¡Ò»Ìõ½ÏΪÀíÏëµÄÖ½´ü½øÐÐÊý¾Ý´¦Àí£¬Ã¿5¸öµãÑ¡È¡Ò»¸ö¼ÆÊýµã£¬ÒÀ´òµãʱ¼äÏȺó˳ÐòÒÀ´Î±àºÅΪ0¡¢1¡¢2¡¢3¡¢4¡¢5£¬ÓÉÓÚ²»Ð¡ÐÄ£¬Ö½´ø±»Ëº¶ÏÁË£¬ÈçͼËùʾ£®Çë¸ù¾Ý¸ø³öµÄA¡¢B¡¢C¡¢DËĶÎÖ½´ø»Ø´ð£ºÔÚ¸ø³öµÄB¡¢C¡¢DÈý¶ÎÖ½´øÖÐÑ¡³ö´ÓÖ½´øAÉÏ˺ϵÄÄǶÎÓ¦ÊÇ
 
£®
¾«Ó¢¼Ò½ÌÍø

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸