Re: [討論] MS在宇宙中做成球型是不是效率最高已回收
※ 引述《d200190 (瞌睡熊)》之銘言：
: 關於沙子作為太空武器，來簡單計算一下
: 假設一粒沙子由二氧化矽(密度2.65g/cm^3)構成，長寬高皆為0.1mm正立方體。
: (0.01cm)^3 * 2.65g/cm^3 = 0.00000265g = 0.00000000265kg = 2.65 x10^-9kg
: 參考科博館網站，殞石速度為11~74km/s 取最大值74000m/s
: 1/2 * 2.65 x10^-9kg * (74000m/s)^2 = 7.2557J = 1.74cal
: 也就是讓1g的水上昇攝氏1.74度的能量
: 先吃早餐去囉，這中間應該又不少衛星要爆炸了。
同你的假設
假設今天改成長寬高皆為0.2mm正立方體，動能為8倍
7.2557J * 8 = 58.064
根據警局的鑑識中心的資料，動能16焦耳以上就可以穿過0.55mm的鋁板
--
※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 1.34.45.101
※ 文章網址: https://www.ptt.cc/bbs/C_Chat/M.1446760237.A.3DA.html
推
11/06 06:00, , 1F
11/06 06:00, 1F
推
11/06 06:02, , 2F
11/06 06:02, 2F
→
11/06 06:03, , 3F
11/06 06:03, 3F
→
11/06 06:03, , 4F
11/06 06:03, 4F
→
11/06 06:03, , 5F
11/06 06:03, 5F
→
11/06 06:03, , 6F
11/06 06:03, 6F
推
11/06 06:05, , 7F
11/06 06:05, 7F
→
11/06 06:06, , 8F
11/06 06:06, 8F
→
11/06 06:07, , 9F
11/06 06:07, 9F
→
11/06 06:07, , 10F
11/06 06:07, 10F
→
11/06 06:08, , 11F
11/06 06:08, 11F
→
11/06 06:11, , 12F
11/06 06:11, 12F
→
11/06 06:12, , 13F
11/06 06:12, 13F
→
11/06 06:17, , 14F
11/06 06:17, 14F
→
11/06 06:17, , 15F
11/06 06:17, 15F
→
11/06 06:17, , 16F
11/06 06:17, 16F
→
11/06 06:26, , 17F
11/06 06:26, 17F
推
11/06 06:47, , 18F
11/06 06:47, 18F
→
11/06 06:49, , 19F
11/06 06:49, 19F
推
11/06 09:26, , 20F
11/06 09:26, 20F
推
11/06 10:14, , 21F
11/06 10:14, 21F
→
11/06 10:55, , 22F
11/06 10:55, 22F
→
11/06 11:05, , 23F
11/06 11:05, 23F
→
11/06 11:10, , 24F
11/06 11:10, 24F
推
11/06 12:54, , 25F
11/06 12:54, 25F
→
11/06 12:54, , 26F
11/06 12:54, 26F
推
11/06 13:00, , 27F
11/06 13:00, 27F
→
11/06 13:00, , 28F
11/06 13:00, 28F
討論串 (同標題文章)