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Clearnote
Q&A
Senior High
Earth Science
這要怎麼算…謝謝🙏
Earth Science
Senior High
6 monthsago
欣欣
這要怎麼算…謝謝🙏
太陽 a ⑥星等X(2.512M ●可 若甲恆星的發光能力是乙恆星的5倍,與地球的距離是乙恆星的2倍,若乙 恆星的視星等是2等,則甲恆星視星等約為幾等? 長面 (A)1~0等(B)0~1等(C)1~2等(D)2~3等(E)3~4等。 等 地 0 乙 第7~10.題為題組 下表列出五顆恆星的視星等與絕對星等,戊是資料被黑水弄髒,請回答下列問題。
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