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試卷名稱：113年 - 113 國立中山大學_碩士班暨碩士在職專班招生考試試題_物理系：普通物理#126282
年份：113年
科目：研究所、轉學考(插大)◆普通物理學
7. On July 16, 1945, in the Manhattan Project led by Robert Oppenheimer, a physicist named Richard Feynman was observing the nuclear test. After the bomb was detonated (引爆), Feynman saw the flash of the bomb explosion roughly 40 seconds before he heard the sound of the explosion. Given the speed of light is 3.0 × 108 m/s and the speed of sound is 3.4 × 102 m/s, estimate the distance between Feynman and the place of detonation.
(A) 1.6 km
(B) 1.4 x 10 km
(C) 3.1 × 102 km
(D) 7.0 × 102 km
(E) 1.2 × 107 km
