科学家预警：300亿只蝉将出现在美东海岸

困惑兔

30 000 000 000 * 2.5 cm
= 30 000 000 000 * 0.025 m
= 30 000 000 000 * 0.000025 km
= 750, 000 km

from earth to moon = 405,696 km

for a round trip, you need 405,696 km * 2 = 811,392 km.

or 750, 000 km can make 0.9243 of round trip.

however, if there is 10% of gap between these cicadas, which is reasonable distance to keep them happy,

then

750, 000 km * 110% = 825000 km,

that is more than enough for a round trip.

aaazzz

30 000 000 000 * 2.5 cm
= 30 000 000 000 * 0.025 m
= 30 000 000 000 * 0.000025 km
= 750, 000 km

from earth to moon = 405,696 km

for a round trip, you need 405,696 km * 2 = 811,392 km.

or 750, 000 km can make 0.9243 of round trip.

however, if there is 10% of gap between these cicadas, which is reasonable distance to keep them happy,

then

750, 000 km * 110% = 825000 km,

that is more than a round trip.
困惑兔 发表于 2013-5-7 11:38 http://bbs.51.ca/images/common/back.gif

你真是闲得蛋痛。:laugh:

鹿角湖渡假村

你真是闲得蛋痛。
aaazzz 发表于 2013-5-7 13:47 http://bbs.51.ca/images/common/back.gif

:laugh:

多伦多老王

高迅神机 发表于 2013-5-7 14:06 http://bbs.51.ca/images/common/back.gif

    :yes::yes:

vector

你真是闲得蛋痛。
aaazzz 发表于 2013-5-7 13:47 http://bbs.51.ca/images/common/back.gif

对别人指手画脚，说东道西，这是赤裸裸干涉别人的内政！
你不仅闲得蛋痛，更是久痒了！？
:laugh:

GPS1

短暂的辉煌。

加加减减

快发动中国人，尤其是广东人——准备好炊具和餐具……

dalu2020

抓了吃。。。

光荣啊，汉奸！

回复 1# 困惑兔


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