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

答案:登入後查看
統計: 尚無統計資料

詳解 (共 1 筆)

#6764142
1. 題目解析 題目要求我們根據光和聲音...
(共 1049 字,隱藏中)
前往觀看
0
0