Object Size (meters)
106,
104.
102
1
10-21
10-4
造成地球巨變之隕石之破壞力?
速率:10 Km/s
直徑:10Km
密度:3 g/c.c.
動能?
10 km diameter
every 100,000,000 years
100 meter diameter
every 10,000 years)
106.
10-8-
10-15 10-10 10-5 1
1 mm diameter
every 30 seconds
71 micron diameter
every 30 microseconds
8=32/₁ =
105
Average Time Between
Impacts with Earth (years)
-3
= 3x10-
(0.01)3
Catastrophic
Events
1 meter diameter
every year
隕石密度,上網查
✓ = 10x10²³ m
(v.
1010 1015
分析
M = PV ~ 3 × 10³ x ( 104,3
+5
= 3x10³ kg
.
.
相當多少顆廣島原
子彈?
ky
8
3000 K4²3 K = 2 m ₂ ² = 1.5×10³² × 10
X
³=1.5×10²35
= 3.6x10³² cal
3.6×10¹9 g
g. of TNT
= 3.6x10" tons
= 3,6 X CÓ KT
~ 3 x 109 Hiroshima
bombs
