ÌâÄ¿ÄÚÈÝ
13£®ÈçͼËùʾΪһ¹ÂÁ¢µÄ¸ºµãµçºÉÐγɵľ²µç³¡£¬Ò»´øµçÁ£×Ó½öÔڵ糡Á¦µÄ×÷ÓÃÏÂÒÔijһËٶȽøÈë¸Ãµç³¡£¬ÒÀ´Î¾¹ýA¡¢B¡¢CÈýµã£¬ÆäÖÐA¡¢CÁ½µãÓ븺µãµçºÉµÄ¾àÀëÏàµÈ£¬BµãÊǹ켣ÉϾàÀ븺µãµçºÉ×î½üµÄµã£®ÔòÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ£¨¡¡¡¡£©A£® | Á£×ÓÔ˶¯µ½BµãµÄËÙÂÊ×î´ó | |
B£® | ÏàÁÚÁ½µã¼äµÄµçÊƲî¹ØϵΪUAB=UBC | |
C£® | ¸ÃÁ£×Ó´ø¸ºµç£¬²¢ÇÒÔÚBµãʱµÄ¼ÓËÙ¶È×î´ó | |
D£® | Á£×ÓÔÚBµãµÄµçÊÆÄÜСÓÚÔÚCµãµÄµçÊÆÄÜ |
·ÖÎö ÓÉÔ˶¯µÄ¹ì¼£¿ÉµÃ£¬Á£×ÓÔÚÔÈÇ¿µç³¡ÖÐÊܵ½µÄµç³¡Á¦µÄ·½ÏòÏò×ó£¬ÔÚÏòÓÒÔ˶¯µÄ¹ý³ÌÖУ¬µç³¡Á¦¶ÔÁ£×Ó×ö¸º¹¦£¬Á£×ÓµÄËٶȼõС£¬µçÊÆÄÜÔö¼Ó£¬¸ù¾ÝÁ£×ÓµÄÔ˶¯·ÖÎö¿ÉÒԵóö½áÂÛ£®
½â´ð ½â£ºA¡¢ÓÉÌâ¿ÉµÃÁ£×ÓÊܵ½µÄµç³¡Á¦Ïò×ó£¬ÔÚÏòÓÒÔ˶¯µÄ¹ý³ÌÖУ¬µç³¡Á¦¶Ôµç×Ó×ö¸º¹¦£¬Á£×ÓµÄËٶȼõС£¬Ô˶¯µ½Bµãʱ£¬µç×ÓµÄËÙ¶È×îС£¬ËùÒÔA´íÎó£»
B¡¢ÓÉÓÚA¡¢CÁ½µãÓ븺µãµçºÉµÄ¾àÀëÏàµÈ£¬ËùÒÔÏàÁÚÁ½µã¼äµÄµçÊƲî¹ØϵΪUAB=-UBC£¬ËùÒÔB´íÎó£»
C¡¢Á£×ÓÊܵ½µÄµç³¡Á¦Ïò×ó£¬ÊÇÅųâÁ¦£¬ËùÒÔÁ£×Ó´ø¸ºµç£»¸ù¾Ýµç³¡ÏßµÄÊèÃܿɵã¬Bµã´¦µÄµç³¡Ïß×îÃÜ£¬ËùÒÔÁ£×ÓÔÚBµãʱÊܵ½µÄµç³¡Á¦×î´ó£¬¼ÓËÙ¶È×î´ó£®ËùÒÔCÕýÈ·£»
D¡¢µ±Á£×Ó´ÓBÏòCÔ˶¯µÄ¹ý³ÌÖУ¬µç³¡Á¦¶ÔÁ£×Ó×öÕý¹¦£¬µçÊÆÄܼõС£¬Á£×ÓÔÚCµãʱµçÊÆÄÜСÓÚÆäÔÚBµãʱµÄµçÊÆÄÜ£¬ËùÒÔD´íÎó£®
¹ÊÑ¡£ºC£®
µãÆÀ ±¾Ìâ¾ÍÊǶԵ糡Á¦×ö¹¦ÌصãµÄ¿¼²é£¬ÕÆÎÕסµç³¡Á¦×öÕý¹¦£¬µçÊÆÄܼõС£¬¶¯ÄÜÔö¼Ó£¬µç³¡Á¦×ö¸º¹¦Ê±£¬µçÊÆÄÜÔö¼Ó£¬¶¯ÄܼõС£®
A£® | U ±äС£¬E ²»±ä | B£® | E ±ä´ó£¬EP ±ä´ó | C£® | U ±äС£¬EP ²»±ä | D£® | U ²»±ä£¬EP ²»±ä |
A£® | ¸ËµÄËÙ¶È×î´óֵΪ5m/s | |
B£® | Á÷¹ýµç×èRµÄµçÁ¿Îª6C | |
C£® | ÔÚÕâÒ»¹ý³ÌÖУ¬Õû¸ö»Ø·²úÉúµÄ½¹¶úÈÈΪ17.5 J | |
D£® | Á÷¹ýµç×èRµçÁ÷·½ÏòΪÓÉcµ½d |
A£® | ÃÜÁ¢¸ù²â³öÁËÔªµçºÉeµÄÊýÖµ | |
B£® | ¬ɪ¸£Í¨¹ý¦ÁÁ£×ÓÉ¢ÉäʵÑ齨Á¢ÁËÔ×ӵĺËʽ½á¹¹Ä£ÐÍ | |
C£® | Ô×Ӻ˷¢ÉúË¥±äʱҪÊÍ·ÅÄÜÁ¿£¬¸ù¾ÝE=mc2£¬ËùÒÔË¥±äºóµÄ×ÜÖÊÁ¿ÊýÒª¼õÉÙ | |
D£® | °²ÅàÌá³öÁË·Ö×ÓµçÁ÷¼Ù˵ |
A£® | 5 m/s2 | B£® | 4 m/s2 | C£® | 3 m/s2 | D£® | 2 m/s2 |
A£® | ƵÂÊÔ½´óµÄ¹â£¬Æä¹â×ÓµÄÄÜÁ¿Ô½Ð¡ | |
B£® | ƵÂÊÔ½´óµÄ¹â£¬Æä¹â×ӵĶ¯Á¿Ô½´ó | |
C£® | ¡°ÏÁÒåÏà¶ÔÂÛ¡±ÈÏΪÎïÌåÔ˶¯µÄËÙ¶ÈÔ½´ó£¬ÖÊÁ¿Ô½Ð¡ | |
D£® | ¡°ÏÁÒåÏà¶ÔÂÛ¡±ÈÏΪÎïÌåÔ˶¯µÄËÙ¶ÈÔ½´ó£¬ÄÜÁ¿Ô½Ð¡ |
A£® | cÒ»¶¨´ø¸ºµç | |
B£® | cËù´øµÄµçºÉÁ¿Ò»¶¨´óÓÚq | |
C£® | c¿ÉÄÜ´¦ÔÚa¡¢bÖ®¼ä | |
D£® | Èç¹û¹Ì¶¨a¡¢b£¬ÈÔÈÃc´¦ÓÚƽºâ״̬£¬ÔòcµÄµçÐÔ¡¢µçºÉÁ¿¡¢Î»Öö¼½«Î¨Ò»È·¶¨ |
¢ÙµçÁ÷±íA£¬Á¿³Ì0¡«0.6A£¬ÄÚ×èԼΪ0.2¦¸£»
¢ÚÁéÃôµçÁ÷¼ÆG£¬Á¿³Ì0¡«100 ¦ÌA£¬ÄÚ×èΪ1000¦¸£»
¢Ûµç×èÏäRo£¬×èÖµ·¶Î§0¡«99990¦¸£»
¢Ü»¬¶¯±ä×èÆ÷R£¬×èÖµ·¶Î§0¡«10¦¸£»
¢ÝѧÉúµçÔ´E£¬µç¶¯ÊÆΪ4V£¬ÄÚ×è²»¼Æ£»
¢Þ¿ª¹ØS¼°µ¼ÏßÈô¸É£»
£¨1£©Èô°ÑÁéÃôµçÁ÷¼ÆG¸Ä×°³ÉÁ¿³ÌΪ5VµÄµçѹ±íV£¬Ôò´®ÁªµÄµç×èÏäR0µÄ×èÖµÓ¦µ÷ÕûΪ49000¦¸
£¨2£©Ê¹ÓøÄ×°ºóµÄµçѹ±íV£¬²ÉÓÃÈçͼ¼×ËùʾµÄµç·½øÐвâÁ¿£¬Í¼ÒÒÊÇʵÎïµç·£¬ÇëÄãÓñʻ®Ïß´úÌæµ¼Ïߣ¬°Ñµç·Á¬½ÓÍêÕû£®
£¨3£©ÓøÄ×°ºóµÄµçѹ±í½øÐÐʵÑ飬µÃµ½µçÁ÷±í¶ÁÊýI1ºÍÁéÃôµçÁ÷¼Æ¶ÁÊýI2ÈçϱíËùʾ
´ÎÊý | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 9 |
I1/£¨A£© | 0 | 0.19 | 0.30 | 0.37 | 0.43 | 0.46 | 0.48 | 0.49 |
I2/£¨¦ÌA£© | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 |
£¨4£©¸ù¾Ý×÷³öµÄI1--I2ͼÏߣ¬µ±ÁéÃôµçÁ÷¼Æ¶ÁÊýI2Ϊ34¦ÌAʱ£¬Ð¡µçÖéÁ½¶ËµÄµçѹΪ1.7V£¬´ËʱСµçÖéµÄµç×èΪ4.3¦¸£¬¹¦ÂÊΪ0.68 W£¨½á¹û¾ù±£ÁôÁ½Î»ÓÐЧÊý×Ö£©
A£® | 1¡¢3Á½µãµçÊÆÏàµÈ | B£® | 1¡¢3Á½µãµç³¡Ç¿¶ÈÏàͬ | ||
C£® | 4¡¢5Á½µãµçÊÆÏàµÈ | D£® | 5¡¢6Á½µãµç³¡Ç¿¶ÈÏàͬ |