ÌâÄ¿ÄÚÈÝ
4£®£¨1£©Ä³Í¬Ñ§ÓöàÓõç±íµÄÅ·Ä·µµÀ´²âÁ¿µçѹ±íÁ¿³Ì0-3VʱµÄÄÚ×裬Èçͼ¼×Ëùʾ£¬ÏȽ«Ñ¡Ôñ¿ª¹ØÐýÖÁ±¶ÂÊ¡°¡Á100¡±µµ£¬ºì¡¢ºÚ±í±Ê¶Ì½Óµ÷Áãºó½øÐвâÁ¿£¬ºì±í±ÊÓ¦½Óµçѹ±íµÄ-½ÓÏßÖù£¨Ñ¡Ìî¡°+¡±»ò¡°-¡±£©£¬Ö¸ÕëÕýºÃÖ¸ÔÚÅ·Ä·±íÖÐÖµµç×è´¦£¬Ôòµçѹ±íµÄµç×èΪ1500¦¸£¬µçѹ±íÁ¿³Ì0-3VµÄ¶ÁÊýÈçͼÒÒËùʾ£¬¶ÁÊýΪ1.50V£¬Å·Ä·±íÄÚ²¿µçÔ´µÄµç¶¯ÊÆ´óСΪ3.00V£¨2£©ÎªÁ˱ȽϾ«È·µÄ²âÁ¿£¨1£©ÎÊÖеçѹ±íµÄÄÚ×裬ÌṩÁË»¬¶¯±ä×èÆ÷£¨×î´ó×èÖµR=50¦¸£©¡¢µç×èÏä¡¢µç¼ü¡¢µçÔ´£¨µç¶¯ÊÆ6V£¬ÄÚ×è²»¼Æ£©£¬µ¼ÏßÈô¸É£¬Í¼2ÖÐÉè¼Æµç·ÕýÈ·µÄÊǼף¨Ñ¡Ìî¡°¼×¡±»ò¡°ÒÒ¡±£©
·ÖÎö £¨1£©£¨1£©Å·Ä·±íÊDzâÁ¿µç×èµÄÒÇ±í£¬°Ñ±»²âµç×è´®ÁªÔÚºìºÚ±í±ÊÖ®¼ä£¬Å·Ä·±íµçÁ÷ÊÇ´ÓºÚ±í±ÊÁ÷³öºì±í±ÊÁ÷È룮ŷķ±íµÄ²âÁ¿ÖµµÈÓÚ±íÅÌʾÊý³ËÒÔ±¶ÂÊ£®µç·µÄ·ÖÎöÓ¦¸Ã°´Õձպϵç·À´½øÐУ®
£¨2£©°´ÕÕ°ëÆ«·¨µÄÒªÇ󣬽áºÏ»¬¶¯±ä×èÆ÷µÄ×èÖµ´óС½øÐÐÑ¡Ôñµç·
½â´ð ½â£º£¨1£©Å·Ä·±íÊDzâÁ¿µç×èµÄÒÇ±í£¬°Ñ±»²âµç×è´®ÁªÔÚºìºÚ±í±ÊÖ®¼ä£¬Å·Ä·±íµçÁ÷ÊÇ´ÓºÚ±í±ÊÁ÷³öºì±í±ÊÁ÷È룬¹Êºì±í±ÊÓ¦½Óµçѹ±íµÄ¡°-¡±½ÓÏßÖù£»Å·Ä·±íµÄ²âÁ¿ÖµµÈÓÚ±íÅÌʾÊý³ËÒÔ±¶ÂÊ£¬¹ÊR=1500¦¸£»µçѹ±íÁ¿³Ì0-3VµÄ¶ÁÊýÈçͼÒÒËùʾ£¬Îª1.50V£»ÓÉÓÚµçѹ±íµÄÄÚ×èÇ¡ºÃµÈÓÚÅ·Ä·±íµÄÖÐÖµµç×裬ҲµÈÓÚÅ·Ä·±íµÄÄÚ×裬Óɱպϵç·µÄÌصãÖª£¬µçÔ´µÄµç¶¯ÊÆΪ£º1.50¡Á2V=3.00V
£¨2£©»¬¶¯±ä×èÆ÷µÄ×èֵΪ50¦¸£¬Ô¶Ð¡ÓÚµçѹ±íµÄÄÚ×裬¹ÊÓ¦²ÉÓ÷Öѹ½Ó·¨£¬¹ÊÑ¡£º¼×
¹Ê´ð°¸Îª£º£¨1£©-£¬1500£¬1.50£¬3.00£¬£¨2£©¼×
µãÆÀ ¶ÔÓÚʵÑéµÄ¿¼²éӦҪעÒâʵÑéµÄÔÀí£¬Í¨¹ýÔÀíÌå»áʵÑéÖеÄÊý¾Ý´¦Àí·½·¨¼°ÒÇÆ÷µÄÑ¡ÔñºÍµç·ѡÔñ£®
A£® | 0¡æµÄ±ù±ä³É0¡æµÄË®£¬Ìå»ýÒª¼õС£¬±íÃ÷¸Ã¹ý³Ì·Ö×Ó¼äµÄ×÷ÓÃÁ¦ÎªÒýÁ¦ | |
B£® | 0¡æµÄ±ù±ä³É0¡æµÄË®£¬Ìå»ýËä¼õС£¬µ«ÊǸùý³Ì·Ö×Ó¼äµÄ×÷ÓÃÁ¦Îª³âÁ¦ | |
C£® | ¸ßѹÆøÌåµÄÌå»ýºÜÄѽøÒ»²½±»Ñ¹Ëõ£¬±íÃ÷¸ßѹÆøÌå·Ö×Ó¼äµÄ×÷ÓÃÁ¦Îª³âÁ¦ | |
D£® | ÒºÌåÄܹ»Á÷¶¯¶ø¹ÌÌå²»ÄÜ£¬ËµÃ÷ÒºÌå·Ö×Ó¼ä×÷ÓÃÁ¦Ð¡ÓÚ¹ÌÌå·Ö×Ó¼ä×÷ÓÃΪ | |
E£® | ¹ÌÌå·¢ÉúÐαäʱ²úÉúµÄµ¯Á¦£¬±¾ÖÊÉÏÊǹÌÌå´óÁ¿·Ö×Ó¼ä×÷ÓÃÁ¦µÄºê¹Û±íÏÖ |
A£® | ÎïÌå±»Å׳öʱµÄ³õËÙ¶ÈΪ5m/s | B£® | ÎïÌå±»Å׳öʱµÄ³õËÙ¶ÈΪ2m/s | ||
C£® | OµãµÄÇúÂʰ뾶Ϊ2.5m | D£® | OµãµÄÇúÂʰ뾶Ϊ0.5m |
A£® | ¸Ã²¨µÄ²¨³¤Îª1.5m | B£® | ¸Ã²¨µÄ´«²¥ËÙ¶ÈΪ1m/s | ||
C£® | ¸Ã²¨ÏòxÖḺ·½Ïò´«²¥ | D£® | ÖʵãP¾¹ý0.5SÔ˶¯µ½Qµã´¦ |
A£® | ÎïÌåÓëˮƽÃæ¼äµÄ×î´ó¾²Ä¦²ÁÁ¦Îª7N | |
B£® | ÎïÌåÓëˮƽÃæ¼äµÄ×î´ó¾²Ä¦²ÁÁ¦Îª3N | |
C£® | ÎïÌåÓëˮƽÃæ¼äµÄ¶¯Ä¦²ÁÒòÊýΪ0.3 | |
D£® | ÎïÌåµÄÖÊÁ¿Îª1kg |
A£® | ¦ÁÉäÏßÑØÖ±ÏßÉäÏò³àµÀ | B£® | ¦ÂÉäÏßÏòÎ÷ƫת | ||
C£® | ¦ÃÉäÏßÏò¶«Æ«×ª | D£® | ÖÊ×ÓÏò±±Æ«×ª |
A£® | 2$\sqrt{2}$t | B£® | 2t | C£® | $\sqrt{2}$t | D£® | $\frac{2\sqrt{2}}{2}$t |