ÌâÄ¿ÄÚÈÝ

7£®½ðÐÇ£¨Venus£©ÊÇÌ«ÑôϵÖа˴óÐÐÐÇÖ®Ò»£¬°´ÀëÌ«ÑôÓɽü¼°Ô¶µÄ´ÎÐò£¬Êǵڶþ¿Å£¬ËüÊÇÀëµØÇò×î½üµÄÐÐÐÇ£¬Ò²ÊǹìµÀ×î½Ó½üÔ²ÐεÄÐÐÐÇ£®ÒÑÖª½ðÐÇÈÆÌ«Ñô×öÔÈËÙÔ²ÖÜÔ˶¯µÄ¹ìµÀ°ë¾¶r=1.0¡Á1011m£¬ÖÜÆÚT=1.8¡Á107s£¬ÒýÁ¦³£Á¿G=6.67¡Á10-11N•m2/kg2£¬Ç󣺣¨¼ÆËã½á¹û±£ÁôһλÓÐЧÊý×Ö£©
£¨1£©Ì«ÑôµÄÖÊÁ¿M£»
£¨2£©½ðÐǵÄÖÊÁ¿m=5.0¡Á1024kg£¬ÇóÌ«ÑôºÍ½ðÐǼäµÄÍòÓÐÒýÁ¦F£®

·ÖÎö £¨1£©¸ù¾ÝÍòÓÐÒýÁ¦ÌṩԲÖÜÔ˶¯ÏòÐÄÁ¦ÇóµÃÖÐÐÄÌìÌåÌ«ÑôµÄÖÊÁ¿£»
£¨2£©¸ù¾ÝÍòÓÐÒýÁ¦ÌṩԲÖÜÔ˶¯ÏòÐÄÁ¦ÇóµÃÌ«ÑôºÍ½ðÐǼäµÄÍòÓÐÒýÁ¦F£®

½â´ð ½â£º£¨1£©¾ÝÍòÓÐÒýÁ¦ÌṩԲÖÜÔ˶¯ÏòÐÄÁ¦ÓУº
$G\frac{mM}{{r}^{2}}=mr\frac{4{¦Ð}^{2}}{{T}^{2}}$
¿ÉµÃÖÐÐÄÌìÌåÌ«ÑôµÄÖÊÁ¿Îª£º
M=$\frac{4{¦Ð}^{2}{r}^{3}}{G{T}^{2}}$=$\frac{4¡Á3.1{4}^{2}¡Á{£¨1.0¡Á1{0}^{11}£©}^{3}}{6.67¡Á1{0}^{-11}¡Á{£¨1.8¡Á1{0}^{7}£©}^{2}}kg$=2¡Á1030kg
£¨2£©Ì«ÑôÓë½ðÐǼäµÄÍòÓÐÒýÁ¦Îª£º
F=$G\frac{mM}{{r}^{2}}=mr\frac{4{¦Ð}^{2}}{{T}^{2}}=5.0¡Á1{0}^{24}¡Á1.0¡Á1{0}^{11}¡Á\frac{4¡Á3.1{4}^{2}}{{£¨1.8¡Á1{0}^{7}£©}^{2}}N$=6¡Á1022N£®
´ð£º£¨1£©Ì«ÑôµÄÖÊÁ¿MΪ2¡Á1030kg£»
£¨2£©Ì«ÑôºÍ½ðÐǼäµÄÍòÓÐÒýÁ¦FΪ6¡Á1022N£®

µãÆÀ ¸ù¾ÝÍòÓÐÒýÁ¦ÌṩԲÖÜÔ˶¯ÏòÐÄÁ¦¿ÉÒÔÇóµÃÖÐÐÄÌìÌåµÄÖÊÁ¿£¬×¢Òâ´Ë¹ØÏµÖ»ÄܼÆËãÖÐÐÄÌìÌåÖÊÁ¿£¬²»ÄܼÆËã»·ÈÆÌìÌåµÄÖÊÁ¿£®

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿
12£®´óÁ¿³ÌµÄµç±íÍùÍùÊÇͨ¹ý¸Ä×°ºÍУ׼µÃµ½µÄ£¬ÊµÑéÊÒÖÐÓÐÒ»¸öºÁ°²±í£¬ÂúÆ«¿Ì¶ÈΪIR=100¦ÌA£¬ÄÚ×è´óСδ֪£¬Ð¡»ªÍ¬Ñ§ÏëÀûÓÃËùѧ֪ʶÏȽ«¸Ã±í¸Ä×°³É´óÁ¿³ÌµÄµçÁ÷±í²¢¶ÔÆäУ׼£¬ËûÉè¼ÆÁËÈçͼËùʾµÄµç·£¬µç·ÖÐR¡äΪµç×èÏ䣬RΪ»¬¶¯±ä×èÆ÷£¬µçÔ´µç¶¯ÊÆE=6V£®¸ÃͬѧµÄʵÑé¹ý³ÌÈçÏ£º
£¨1£©ËûÊ×ÏÈÀûÓøõç·²âÁ¿ºÁ°²±íµÄÄÚ×裮±ÕºÏ¿ª¹ØS1£¬µ÷½Ú»¬¶¯±ä×èÆ÷R£¬Ê¹ºÁ°²±íÂúÆ«£»½Ó×űպÏS2£¬±£³ÖR²»±ä£¬µ÷½Úµç×èÏäR¡ä£¬Ê¹ºÁ°²±íµÄÖ¸ÕëÖ¸ÔÚÂúÆ«¿Ì¶È£»´Ëʱ£¬¶Á³öµç×èÏäR¡äµÄ×èֵΪ200¦¸£¬ÔòºÁ°²±íµÄÄÚ×èΪRg=200¦¸£®
£¨2£©½ÓÏÂÀ´£¬Ëû½«ºÁ°²±í¸Ä×°³ÉÁ¿³ÌΪ20mAµÄµçÁ÷±í²¢¶ÔÆäУ׼£®
¢ÙΪÁ˵õ½Á¿³ÌΪ20mAµÄµçÁ÷±í£¬Ðè¸øºÁ°²±í²¢Áª£¨Ìî¡°´®Áª¡±»ò¡°²¢Áª¡±£©Ò»¸ö×èֵΪ1¦¸µÄµç×裮
¢Ú½«Á¿³ÌÀ©´óµÄµçÁ÷±íÓë±ê×¼µçÁ÷±í´®Áª½øÐÐУ׼£®ÔÚµÚ£¨1£©ÎÊÖУ¬ºÁ°²±íÄÚ×èµÄ²âÁ¿Öµ´æÔÚϵͳÎó²î£¬µ¼ÖÂËù²âºÁ°²±íµÄÄÚ×èÖµÓëÕæÊµÖµÏà±ÈӦƫС£¨Ìî¡°Æ«´ó¡±»ò¡°Æ«Ð¡¡±£©£¬ÓÃÉÏÊöÁ½³ÆÎª20mAµÄµçÁ÷±í²âµç·µçÁ÷ʱ£¬Æä²âÁ¿ÖµÐ¡ÓÚ£¨Ìî¡°´óÓÚ¡±¡¢¡°µÈÓÚ¡±»ò¡°Ð¡ÓÚ¡±£©µç·µçÁ÷µÄʵ¼ÊÖµ£®
¢ÛΪÁËÏû³ýÉÏÊöÎó²î£¬ÐèÒª¶ÔÔ­µç·½øÐиĽø£¬ÇëÔÚËù¸øµÄ·½¿òÖл­³ö¸Ä½øºóµÄµç·ͼ£®

Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com

¾«Ó¢¼Ò½ÌÍø