ÌâÄ¿ÄÚÈÝ
13£®ÏÂÁÐÓйظßÖÐÎïÀíѧÉúʵÑéµÄÃèÊöÖУ¬ÕýÈ·µÄÊÇ£¨¡¡¡¡£©A£® | ¡°ÑéÖ¤»úеÄÜÊغ㶨ÂÉ¡±ÊµÑéÖУ¬²»ÐèÒªÓÃÌìƽ²â³öÏÂÂäÖØ´¸µÄÖÊÁ¿ | |
B£® | µç»ð»¨´òµã¼ÆʱÆ÷ºÍµç´Å´òµã¼ÆʱÆ÷¾ùÔÚ4-6V½»Á÷µçѹÏÂÕý³£¹¤×÷£¬µ±ÆµÂÊΪ50Hzʱ£¬Ã¿¸ô0.02s´òÒ»´Îµã | |
C£® | ¡°Óõ¥°Ú²â¶¨ÖØÁ¦¼ÓËٶȡ±ÊµÑéÖУ¬¶ÔÃë±í¶ÁÊýʱ©µôÁËС¿Ì¶ÈÅÌÉÏ°ë·ÖÕëµÄ¶ÁÊý£¬½«µ¼ÖÂÖØÁ¦¼ÓËٶȵIJâÁ¿Öµ±Èʵ¼Êֵƫ´ó | |
D£® | ¡°ÑéÖ¤¶¯Á¿Êغ㶨ÂÉ¡±ÊµÑéÖУ¬ÔÚ°×Ö½ÉϼÇÏÂÖØ´¸ÏßËùÖ¸µÄλÖÃOºó£¬²»Ð¡ÐĽ«°×Ö½ºÍ¸´Ð´Ö½Í¬Ê±ÏòÓÒÒƶ¯ÁËÉÙÐí£¬¼ÌÐøʵÑ飬µÃµ½Ð¡ÇòÔÚ°×Ö½ÉÏÂäµãµÄƽ¾ùλÖÃA¡¢B¡¢C£¨Èçͼ£©£¬°×Ö½µÄÒƶ¯¶ÔʵÑé½á¹ûûÓÐÓ°Ï죮 |
·ÖÎö ¸ÃÌ⿼²éÁ˶à¸öʵÑéÎÊÌ⣬½â¾öʵÑéÎÊÌâÊ×ÏÈÒªÕÆÎÕ¸ÃʵÑéÔÀí£¬Á˽âʵÑéµÄ²Ù×÷²½ÖèºÍÊý¾Ý´¦ÀíÒÔ¼°×¢ÒâÊÂÏ
ÔÚÑéÖ¤»úеÄÜÊغ㶨ÂÉʵÑéÖУ¬²»Ò»¶¨Òª²âÁ¿ÎïÌåµÄÖÊÁ¿£»µç´Å´òµã¼ÆʱÆ÷µÄ¹¤×÷µçѹÊǽ»Á÷4¡«6·ü£¬µç»ð»¨´òµã¼ÆʱÆ÷µÄ¹¤×÷µçѹÊǽ»Á÷220·ü£»¸ù¾ÝÖÜÆÚ$\frac{t}{n}$µÃ·ÖÎö²âÁ¿µÄÖÜÆÚƫС»òÆ«´ó£¬È»ºó¸ù¾ÝÖØÁ¦¼ÓËÙ¶Èg=$\frac{4{¦Ð}^{2}l}{{T}^{2}}$·ÖÎögµÄ²âÁ¿ÖµÓëÕæʵֵ֮¼äµÄ¹Øϵ£»ÑéÖ¤¶¯Á¿Êغ㶨ÂÉ¡±ÊµÑéÖУ¬ÔÚ°×Ö½ÉϼÇÏÂÖØ´¸ÏßËùÖ¸µÄλÖÃOºó£¬²»Ð¡ÐĽ«°×Ö½ºÍ¸´Ð´Ö½Í¬Ê±ÏòÓÒÒƶ¯ÁËÉÙÐí£¬Ò»¶¨»áÓ°Ï쵽ʵÑéµÄ½á¹û£®
½â´ð ½â£ºA¡¢ÔÚÑéÖ¤»úеÄÜÊغ㶨ÂÉʵÑéÖУ¬²»Ò»¶¨Òª²âÁ¿ÎïÌåµÄÖÊÁ¿£¬ÒòΪÑéÖ¤¶¯Äܵı仯Á¿ºÍÖØÁ¦ÊÆÄܵı仯Á¿Ê±£¬Á½±ß¶¼ÓÐÖÊÁ¿£¬¿ÉÒÔԼȥ±È½Ïv2ÓëghµÄ¹Øϵ£®¹ÊAÕýÈ·£»
B¡¢µç´Å´òµã¼ÆʱÆ÷µÄ¹¤×÷µçѹÊǽ»Á÷4¡«6·ü£¬µç»ð»¨´òµã¼ÆʱÆ÷µÄ¹¤×÷µçѹÊǽ»Á÷220·ü£¬¹ÊB´íÎó£»
C¡¢ÔÚ¡°Óõ¥°Ú²â¶¨ÖØÁ¦¼ÓËٶȡ±µÄʵÑéÖУ¬¶ÔÃë±í¶ÁÊýʱ©µôÁËС¿Ì¶ÈÅÌÉÏ°ë·ÖÕëµÄÊý×Ö£¬Ôò¶Á³öµÄʱ¼äƫС£¬¸ù¾ÝÖÜÆÚ$\frac{t}{n}$µÃ²âÁ¿µÄÖÜÆÚƫС£¬¸ù¾ÝÖØÁ¦¼ÓËÙ¶Èg=$\frac{4{¦Ð}^{2}l}{{T}^{2}}$µÃ²âµÃµÄgÖµÃ÷ÏÔÆ«´ó£¬¹ÊCÕýÈ·£»
D¡¢ÔÚÀûÓÃÁ½ÇòÅöײ¡°ÑéÖ¤¶¯Á¿Êغ㶨ÂÉ¡±µÄʵÑéÖУ¬ÔÚ°×Ö½ÉϼÇÏÂÖØ´¸ÏßËùÖ¸µÄλÖÃOºó£¬²»Ð¡ÐĽ«°×Ö½ºÍ¸´Ð´Ö½Í¬Ê±ÏòÓÒÒƶ¯ÁËÉÙÐí£¬¼ÌÐøʵÑ飬µÃµ½Ð¡ÇòÔÚ°×Ö½ÉÏÂäµãµÄƽ¾ùλÖÃA¡¢B¡¢C£¨Èçͼ£©£¬ÔòÈý¸öλÒƵIJâÁ¿ÖµOA¡¢OB¡¢ºÍOC¶¼Ð¡ÓÚÕæʵֵ£¬ËùÒÔ¶ÔʵÑéµÄ½á¹ûÊÇÓÐÓ°ÏìµÄ£®¹ÊD´íÎó£®
¹ÊÑ¡£ºAC£®
µãÆÀ ±¾Ì⿼²éÁËËĸö³£¿¼ÊµÑéÖеÄ×¢ÒâʵÑéºÍÎó²î·ÖÎö£¬Òª×¢ÒâÃ÷È·¸÷ʵÑéµÄʵÑéÔÀí£¬ÖªµÀʵÑéÖÐÈçºÎ²ÅÄܼõÉÙʵÑéÎó²î£¬Ã÷È·Ó°Ïì½á¹ûµÄÒòËؼ´¿ÉÕýÈ·Çó½â£®
A£® | 0.01m/s¡¢0.8m/s2 | B£® | 0.01m/s¡¢0.16m/s2 | ||
C£® | 0.4m/s¡¢0.8m/s2 | D£® | 0.4m/s¡¢0.16m/s2 |
A£® | µç³¡·½ÏòÒ»¶¨ÓÉAÖ¸ÏòB | B£® | Èô³¡Ô´ÎªÕýµçºÉ£¬Î»ÖÃÔÚA²à | ||
C£® | Èô³¡Ô´Îª¸ºµçºÉ£¬Î»ÖÃÔÚB²à | D£® | Èô³¡Ô´ÎªÕýµçºÉ£¬Î»ÖÃÔÚB²à |
A£® | µ±FÔö´óʱ£¬fÒ²ËæÖ®Ôö´ó | B£® | µ±FÔö´óʱ£¬f±£³Ö²»±ä | ||
C£® | FÓëfÊÇÒ»¶Ô×÷ÓÃÁ¦Óë·´×÷ÓÃÁ¦ | D£® | FÓëfÊÇÒ»¶ÔƽºâÁ¦ |
A£® | ÓÉÎ÷Ïò¶«´¹Ö±´Å×ÓÎçÏß | B£® | Óɶ«ÏòÎ÷´¹Ö±´Å×ÓÎ缶 | ||
C£® | ÓÉÄÏÏò±±ÑØ´Å×ÓÎçÏß | D£® | ÓɳàµÀÏòÁ½¼«ÑØ´Å×ÓÎçÏß |
A£® | ÏßËٶȱä´ó | B£® | ½ÇËٶȱäС | C£® | ÖÜÆÚ±äС | D£® | »úеÄܲ»±ä |