.ÁöÇý Ű¿ì´Â ¿µ¾î(Á¦ 02 ȸ)
2026-03-14 ¿ÀÈÄ 9:17:32 | Á¶È¸ : 377
ÁöÇý Ű¿ì´Â ¿µ¾î(Á¦ 02 ȸ) : ÅÂ¾ç ºû
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*ÀÌ ¹®Á¦´Â Áö±¸¿Í žçÀÇ °Å¸® ¹× ºûÀÇ ¼Óµµ¸¦ ¾Ë¾Æ¾ß ÇÑ´Ù.
this problem requires knowing the distance
between the earth and the sun and the speed of light.
[¹®] :
°¡À»¿¡ ÅÂ¾ç ºûÀÌ Áö±¸¿¡ ´ê´Âµ¥ ¾ó¸¶³ª °É¸±±î?
how long does it take the suns light to reach the earth in the fall?
º¸±â :
°¡)¾à 30 ºÐ 15 ÃÊ ³ª)¾à 10 ºÐ 18 ÃÊ
´Ù)¾à 8 ºÐ 30 ÃÊ ¶ó)¾à 5 ºÐ 11 ÃÊ
[´ä] ( )
==
<Áß¿ä ´Ü¾î>
earth /ərɵ/[¾î(¾î)¤©¤µµå]
n. (the ¡) Áö±¸, ´ëÁö, À°Áö(¹Ù´Ù¿¡ ´ëÇÏ¿©), Áö¸é(Çϴÿ¡ ´ëÇÏ¿©).
• the whole ¡ was astonished. / ¿Â Áö±¸°¡(¼¼°è »ç¶÷µéÀÌ) ³î¶ú´Ù.
==
[Á¤´ä ¹× ÇØ¼³]
Á¤´ä : ´Ù) ¾à 8ºÐ 30ÃÊ
ÇØ¼³ :
-ºûÀÇ ¼Óµµ : ¾à 30¸¸ §°/ÃÊ (¼Ò¸®(340m/ÃÊ)º¸´Ù 88¸¸ ¹è ºü¸§)
-Áö±¸¿¡¼ žç±îÁöÀÇ °Å¸® : ¾à 1¾ï 5õ¸¸ §°
1¾ï 5õ¸¸ §° ¡À 30¸¸ §° = ¾à 8ºÐ 33ÃÊ
[»ó½Ä] :
ºûÀº 1ÃÊ¿¡ Áö±¸¸¦ Àϰö ¹ÙÄû ¹ÝÀ» µ¹ ¼ö ÀÖ°í,
Áö±¸¿¡¼ ´Þ±îÁö °¡´Â µ¥´Â 1ÃÊ Á¤µµ °É¸°´Ù. (Áö±¸ÀÇ µÑ·¹ : 4¸¸km)
light can travel around the earth seven
and a half times in one second,
and it takes about one second to travel from earth to the moon.
(earths circumference: 40,000 km)
==
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