[解題] 國二理化 光
1.年級:國二
2.科目:理化
3.章節:第四章 光
4.題目:
若光速降低至聲速相同,則我們看到月球自初虧到復圓的時間將有何變化?
(A)增長 (B)縮短 (C)不變 (D無法預測)
5.想法:
光速降低至與聲數相同,距離=時間*速率,速率變小,和時間成反比,
時間不是應該增長嗎?
但是答案是(C)不變!!
請各位幫我解答了~"~
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