d********0
发帖数: 5142 | 1 ☆─────────────────────────────────────☆
waiting140 (等待140) 于 (Mon Jul 11 16:10:04 2011, 美东) 提到:
别笑我，尽管直觉上是这样的，但上中学时，想必大家都做过这样的物理题无数次了 --
木块质量m，速度v, 与水平桌面的摩擦系数mu, 重力加速度g, 问多久能停下，或者滑
行多远停下。
做法很简单，重力弹力都是mg, 平衡掉，摩擦力 mu*mg, 牛顿第二定律算出加(减）速
度 a=mu*g, 也就是说质量约掉了。所以时间是 t = v/(mu g), 距离是 1/2 * a * t^2
，结果和质量是无关的。
而且即使是在斜坡上，还是和质量无关（当然得保证摩擦力能让木块停在坡上不滑下来
），反正摩擦力里有m, 算加速度能和质量约掉。
那套用到车子上，假定急刹车后车轮不再滚动，那不就是个滑动摩擦减速的模型吗，跟
车重不重有什么关系？当然你可以说还有空气阻力，但对车子这个量级的东西来说，空
气阻力可以忽略吧。感觉唯一能颠覆这个结论的是摩擦系数为常数这个假设，如果弹力
越大，摩擦系数越小，那倒... 阅读全帖 |
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s********n
发帖数: 4346 | 2 The Arguments Against Gay Marriage
Well, of course there are a lot of reasons being offered these days for
opposing gay marriage, and they are usually variations on a few well-
established themes. Interestingly, the Supreme Court in Hawaii has heard
them all. And it found, after due deliberation, that they didn't hold water.
Here's a summary of the common reasons given:
1. Marriage is an institution between one man and one woman. Well, that's
the most often heard argument, one even codified in a... 阅读全帖 |
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sr
发帖数: 86 | 3 Monday morning was one of those blue sky, white snow days, when the sun is
brilliant and the snow dazzling and you can hardly wait to get outside. Tim
called, asking if I wanted to go sledding. An hour later I found him waiting
on his front steps, holding the ropes of an old runner sled and a snow tube.
"I know the best hill. It's a long walk, but we can make it."
We walked three blocks to the end of Walnut Avenue. I dragged the sleds
while Tim ran ahead and slid on every gleaming patch of s |
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L**********t
发帖数: 42 | 4 I got up early in the morning. Before I left my room, I’d
prayed for myself that I would find a job as soon as possible.
I grabbed the news to everywhere. Got on the buses and got
off. Walked in a door and to another one. The whole day slid away.
I was too weariful. I didn’t have any energy left to keep going.
I went back to my little room reluctantly, and collapsed on the
bed. One second later, I went to sleep...
After few days, I still couldn’t find a job. I tried to
interview for |
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p*****e
发帖数: 7299 | 5 Cops: Calif doctor gets stuck in chimney, dies
BAKERSFIELD, Calif. – A doctor involved in an "on-again, off-again"
relationship apparently tried to force her way into her boyfriend's home by
sliding down the chimney, police said Tuesday. Her decomposing body was
found there three days later.
Dr. Jacquelyn Kotarac, 49, first tried to get into the house with a shovel,
then climbed a ladder to the roof last Wednesday night, removed the chimney
cap and slid feet first down the flue, Bakersfield poli |
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m*****e
发帖数: 4193 | 6 Don’t Shave That Hair!!!
I have recently made a mistake in my life, and I offer my story to you,
that you may learn from my error. It all started, as many things do, with me
having trouble shitting.
No, I was not constipated; this was not a regularity problem but a
matter of technique. It seems my ass-hair had grown to such a length that
tiny grogans were constantly getting tied up in the matted jungle between my
asscheeks. It led to much frustration, with me KNOWING that I still had... 阅读全帖 |
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s*******t
发帖数: 838 | 7 老外最近一个很火的文章，翻译版
千万！不要！刮！ 你的肛毛！！！！
最近我犯下了人生中最大的一个错误！！！！
现在把经验告诉大家，希望大家能从中吸取教训！！！
这一切都要从我拉便便的问题开始说起！！！
不，你想错了，实际上，我并没有便秘！！！
只是在技术上的排便问题而已！！
我的肛毛太长太浓密了，每次拉便便总有一些沾在毛上面！！！
这些残便粘的很牢，这让我非常不爽！！！！！！
我必须用纸清理我的肛毛！！！
但这是个技术活！！！
因为看不见我的屁屁，清理肛毛的时候经常会把屁屁其他地方弄脏！！
还有一个方法是用很多纸把整个屁股仔细擦一遍！！！！
这样做的后果是纸用得太多我家马桶经常会被厕纸堵住！！！！
这个问题困扰我很久！！！！！
经过深思熟虑以后，我想到了一个好点子！！！！
这是老子的屁股老子的肛毛！！！我的地盘我做主！！！！
为什么不把肛毛刮了呢????
这样我的大便不就可以流畅排放了吗！！！！
我脑子里不禁浮现出金黄色的啤酒从酒桶里潺潺流出的美丽景象！！！！！
但后来的事实证明，这是一个非常错误的傻B想法！！！
那天晚上，我坐在毛巾上，开始用廉价的一次性剃刀刮我的肛毛！！！！
我要小... 阅读全帖 |
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j****e
发帖数: 12067 | 8 【 以下文字转载自 Food 讨论区 】
发信人: patsy (patsy), 信区: Food
标 题: 地铁大餐 Aboard the L Train, Luncheon Is Se
发信站: BBS 未名空间站 (Wed May 4 21:07:17 2011, 美东)
看一下周日纽约地铁的大餐。看到那个menu就很饿呀，caviar, foie gras, filet mignon, 和 panna cotta， 都是我爱的。
======================================================================
http://www.nytimes.com/2011/05/04/dining/04train.html?_r=1&ref=
Aboard the L Train, Luncheon Is Served
By MELENA RYZIK
Published: May 3, 2011
The maître d'hôtel, who identified himself as C. K., s... 阅读全帖 |
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v**********m
发帖数: 5516 | 9 她的帖子就像是疯人院的呐喊声。
Narcissus26 (王语嫣) 发于 Sat Jan 23 23:53:07 2016, 美东, 信区: Biology
标 题: Re: 又一个被中国AP压迫的博士后
这个应该是个别PI，别斗太狠了，PI 很珍惜自己的羽毛的，学生优秀也是credit, 都
整死了 ，他图啥。
你是不是太能干了？能者多劳。。
Lol
..
回复 转贴 更多...
Narcissus26 (王语嫣) 发于 Sat Jan 23 23:56:23 2016, 美东, 信区: Biology
标 题: Re: 又一个被中国AP压迫的博士后
歧视同性恋，我照样告你！
还 Harvard law school...
给Georgetown 提鞋都不配，不懂行情的_。
【 以下文字转载自 Biology 讨论区 】
发信人: GSJTW (gsw), 信区: Biology
标 题: Re: 又一个被中国AP压迫的博士后
发信站: BBS 未名空间站 (Sun Jan 24 06:38:35 2016, 美东)
双重人格，n重人格，。。。
只要能正常function,... 阅读全帖 |
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e******u
发帖数: 16 | 10 When I was a puppy, I entertained you with my antics and made you laugh. You
called me your child, and despite a number of chewed shoes and a couple of
murdered throw pillows, I became your best friend. Whenever I was "bad," you
'd shake your finger at me and ask "How could you?" - but then you'd relent,
and roll me over for a bellyrub.
My housebreaking took a little longer than expected, because you were
terribly busy, but we worked on that together. I remember those nights of
nuzzling you in b... 阅读全帖 |
|
e*******u
发帖数: 333 | 11 You can't keep your pet? Really?
~By a Shelter Director
Our society needs a huge "Wake-up" call.
As a shelter manager, I am going to share
a little insight with you all...
a "view from the inside" - if you will.
First off, any of you whom have surrendered a pet
to a shelter or humane society should be made to work
in the "back" of an animal shelter - for just ONE DAY.
Maybe if you saw the life drain from those sad,
lost, confused eyes, you'd stop flagging the ads on here
and help these animals f... 阅读全帖 |
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t*****u
发帖数: 8966 | 12 You can't keep your pet? Really?
~By a Shelter Director
Our society needs a huge "Wake-up" call.
As a shelter manager, I am going to share
a little insight with you all...
a "view from the inside" - if you will.
First off, any of you whom have surrendered a pet
to a shelter or humane society should be made to work
in the "back" of an animal shelter - for just ONE DAY.
Maybe if you saw the life drain from those sad,
lost, confused eyes, you'd stop flagging the ads on here
and help these animals f... 阅读全帖 |
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e***h
发帖数: 137 | 13 A Letter from a Shelter Manager - anonymous in North Carolina
I think our socie...ty needs a huge "Wake-up" call. As a shelter manager, I
am going to share a little insight with you all...a view from the inside if
you will.
First off, all of you breeders/sellers should be made to work in the "back"
of an animal shelter for just one day. Maybe if you saw the life drain from
a few sad, lost, confused eyes, you would change your mind about breeding
and selling to people you don't even know.
That pu... 阅读全帖 |
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c*****a
发帖数: 5428 | 14 不多说，只转一个shelter manager写的关于breeder和每年900万到1100万只被迫安乐
的宠物的文章。看完了，再想想世界上有没有真正100％“负责”的breeder。
http://deafanimals.blogspot.com/2009/07/life-of-cats-and-dogs-a
A Letter from a Shelter Manager
I think our society needs a huge "Wake-up" call. As a shelter manager, I am
going to share a little insight with you all...a view from the inside if you
will.
First off, all of you breeders/sellers should be made to work in the "back"
of an animal shelter for just one day. Maybe if you saw the life drain from
... 阅读全帖 |
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M******e
发帖数: 1437 | 15 i happen to read this article written by a shelter worker. Very shocking and
heartbreaking. FYI.
------------------------------------------------------
~BEFORE YOU DUMP YOUR PETS AT THE POUND
OR THINK YOU CAN FIND HOMES FOR LITTERS OF PUPPIES + KITTENS
BECAUSE YOU FAILED TO FIX YOUR PETS....PLEASE READ~
I think our society needs a huge "Wake-Up" call.
As a shelter manager, I am going to share a little insight with you all...a
view from the inside if you will.
First off, all of you people who hav... 阅读全帖 |
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x********u
发帖数: 15396 | 16 When I was a puppy I entertained you with my antics and made you laugh. You
called me your child and despite a number of chewed shoes and a couple of
murdered throw pillows, I became your best friend. Whenever I was "bad," you
'd shake your finger at me and ask "How could you?" - but then you'd relent
and roll me over for a bellyrub.
My housetraining took a little longer than expected, because you were
terribly busy, but we worked on that together. I remember those nights of
nuzzling you in bed,... 阅读全帖 |
|
y*********5
发帖数: 59 | 17 【 以下文字转载自 Dreamer 讨论区 】
发信人: yatoufiede5 (yatoufiede5), 信区: Dreamer
标 题: 斗士们批国人前先关注好自己身边的问题。 (转载)
发信站: BBS 未名空间站 (Sun Oct 16 12:58:07 2011, 美东)
biorobot, 你要批斗士前， 先关住好你自己儿子的问题！ 你按时付你的child support么？
你带你儿子去看过球赛么？！
然后， 你这里逻辑很傻逼. 如果我开个救助中国穷人孩子的基金， 你会说， 先关注好自己身边
美国穷人孩子的问题么？！
发信人: biorobot (机器人), 信区: NewYork
标 题: 斗士们批国人前先关注好自己身边的问题。
发信站: BBS 未名空间站 (Sun Oct 16 11:49:13 2011, 美东)
A Letter from a Shelter Manager - anonymous in North Carolina
I think our society needs a huge "Wake-up" call. As a shelte... 阅读全帖 |
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l*r
发帖数: 79569 | 18 Starving and exhausted, Ray wrapped up his laptop and dragged himself out of
the company building. It’s already dark outside and his car is the only
one in the lot, all alone and helpless. It was just another dreadful long
day. Everything at work started to crack about six months ago, and has slid
into an endless downward spiral since then.
“Fantastic, just worse and worse.”, Ray mumbled to himself, still thinking
of the rumor of another round of layoff at work, as he drove the car off
Main Stre |
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D******6
发帖数: 6211 | 19 大家都忒厉害了。。。
英文是费纸，以前翻译书的时候，一页英文等于半页中文。
of
slid
thinking |
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e*******d
发帖数: 461 | 20 ha..ha..it was cool. When I lost my first tooth, I cried my eye out and
thought that it would never
grow back.
of
slid
thinking |
|
S*******n
发帖数: 12762 | 21 Chapter 2, The Deal
Well, I had no idea what was the "deal" she was talking about, but I was cer
tain I would like whatever she was up to. After all, I was on a beach, and w
ho would refuse a salty drink on the beach?
But I had to be cautious. It's one thing to be caught masturbating on a beac
h; it's quite another to be caught doing yourself with an imagined partner.
So I gave a faint, vague, and uncommitted smile. But Taura took the hint.
Before I realized, she already wrapped her black G-stri... 阅读全帖 |
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r****y
发帖数: 26819 | 22 CHAPTER 91
Silas sat in the passenger seat of the parked Jaguar limousine near the Temple
Church. His hands felt damp on the keystone as he waited for Rémy to finish
tying and gagging Teabing in back with the rope they had found in the trunk.
Finally, Rémy climbed out of the rear of the limo, walked around, and slid
into the driver's seat beside Silas.
"Secure?" Silas asked.
Rémy chuckled, shaking off the rain and glancing over his shoulder through
the open partition at the crumpled form of Leig |
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c****t
发帖数: 19049 | 23 THE GHASTLY ORDEAL OF TIMOTHY CAVENDISH
One bright dusk, four, five, no, my God, six summers ago, I strolled along a
Greenwich
avenue of mature chestnuts and mock oranges in a state of grace. Those
Regency residences
number among London’s costliest properties, but should you ever inherit one
, dear Reader, sell
it, don’t live in it. Houses like these secrete some dark sorcery that
transforms their owners into
fruitcakes. One such victim, an ex-chief of Rhodesian police, had, on the
evening in qu... 阅读全帖 |
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t*******n
发帖数: 4445 | 24 前两天直接用英文看感觉巨通顺--没准他的诗天生就是为翻译写的。
不熟悉原作的同学,可以去下述URL对号入座：
http://www.lingshidao.net/docs/xinshi/beidao.htm
############################################
From: "The August Sleepwalker"
By Bei Dao
Translated & introduced by Bonnie S. McDougall
Anvil Press Poetry, 1988.
############################################
1. The Red Sailboat
Ruined walls broken ramparts all around
how can the road extend beneath our feet
not morning stars but street lights that have slid
into your pupils pour forth
I don't wa |
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D*****r
发帖数: 6791 | 25 http://www.gutenberg.org/files/37726/37726-h/37726-h.htm
IN GOD'S WAY
SCHOOL-DAYS
I.
In the melting snow on the hill-side by the sea, in the last rays of the
evening sun, stood a boy of fourteen, awestruck. He looked toward the west,
out across the sea; he looked toward the east, over town and shore and the
broad hills; in the background still higher peaks rose far away in the clear
sky.
The storm had lasted a long time; it had been more terrible, too, than any
the old people could remember. In ... 阅读全帖 |
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d**********u
发帖数: 4124 | 28 ☆─────────────────────────────────────☆
recluse (skystar) 于 (Thu Oct 22 22:55:18 2009, 美东) 提到:
发信人: recluse (skystar), 信区: Connecticut
标 题: 北京大学校友聚会暨周其凤校长座谈会
关键字: '北京大学校友会 校长 座谈会'
发信站: BBS 未名空间站 (Thu Oct 22 22:54:05 2009, 美东)
耶鲁大学北京大学校友会定于本周六10月24日下午举行聚合并邀请北京大学校长周其凤
院士参加座谈
活动将于下午3点开始，座谈会将于3点30分开始，地点位于耶鲁大学环境学院Kroon
Hall
北京大学校友会欢迎所有北大校友参加，如有问题请发信给pkualumniatyale@gmail.
com
Dear Alumni and Friends,
Peking University Alumni at Yale will host a panel talk and a reception to
warmly welcome the v... 阅读全帖 |
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s****r
发帖数: 2386 | 29 nnd, our saturday night indoor soccer got cancelled, but as an afterthought,
it beats to be stuck on the road. Brought my son to snow slidding, he's so
excited... |
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s****r
发帖数: 2386 | 30 Get a new (or another better used) one, up to some point it is very hard to
fix, it is not worth it. I used to have one which died while waiting for a
traffic light on a downhill slope in winter, then the brakes did not work
and it slid into the snow pile on the side ( luckily not into cars on the
other side of the road) |
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s********y
发帖数: 433 | 31 Associated Press - September 19, 2007 9:14 AM ET
LANSING, Mich. (AP) - Firefighters cut a hole in the side of a house and
used a forklift to extricate a 900-pound Lansing man from his second-floor
bedroom.
A visiting nurse called in rescue workers after determining that the 33-year
-old man needed medical help.
Firefighters lowered the man on a platform and slid it onto a flatbed truck
to take him to a city hospital. The covered him with a tarp to shield him
from onlookers.
The man had not left |
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t******r
发帖数: 476 | 32 【 以下文字转载自 SanFrancisco 讨论区 】
发信人: jerryfu (守望者), 信区: SanFrancisco
标 题: 沉重悼念田波同学
发信站: BBS 未名空间站 (Tue Jul 26 19:59:59 2011, 美东)
http://www.facebook.com/groups/246263042059067
给所有认识田波和愿意帮助他家人的朋友
Tian Bo, from Shandong, Jinan. Born in 1974, graduated from South-East
University of China in 1999 with Master Degree. worked in Seagate Singapore.
2002-2004 studied in UC Irvine,Joined Samsung San Jose in 2004.
July 18 2011, he took a road trip to Utah, alone, lost his way on 7,23,
during the hiking in th... 阅读全帖 |
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m*******h
发帖数: 896 | 33
Try WinXP HTML SLIDE PowerToy. make slid show in seconds.
I just knew this this morning |
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t********r
发帖数: 4908 | 34 3rd this
we have the oddysey.
Make sure you get the power slid door :) |
|
w***n
发帖数: 4358 | 35 ☆─────────────────────────────────────☆
scratch (零零Ｏ) 于 (Fri Oct 1 11:20:36 2010, 美东) 提到:
说说你们都开的末样的MINIVAN吧。买车头疼中。。。
☆─────────────────────────────────────☆
happymichael (something new) 于 (Fri Oct 1 11:21:23 2010, 美东) 提到:
还以为说国内人多呢
☆─────────────────────────────────────☆
wh (wh) 于 (Fri Oct 1 11:37:09 2010, 美东) 提到:
我好几个中国朋友开honda的odyssey, 都说好，内部空间大。
☆─────────────────────────────────────☆
nickbear (nick) 于 (Fri Oct 1 11:44:19 2010, 美东) 提到:
minivan跟本没什么选择啊
华人里面不是odyssey就是... 阅读全帖 |
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j***b
发帖数: 5901 | 36 我想在beamer slids中加入图片，因为用的pdflatex,所以
加的pdf格式图片。结果编译出来之后只显示一个空白的框
上面写着文件名。请问怎么解决？ |
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r*****e
发帖数: 4598 | 37 Oh yea,I got it. The price of gasoline only affaced the quantity demand,
which means demand slid down on the same curve. Thank you guys. You guys are
the best. |
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s*****t
发帖数: 1994 | 38 Ring of Fire from Cape Wrath
Credit & Copyright: Hans Coeckelberghs
Explanation: If the Moon's apparent diameter is not quite large enough to cover the Sun
during a solar eclipse, an annular eclipse can be the result -- a spectacle of silhouetted Moon
surrounded by a solar "ring of fire". Just such a view was possible for observers in the far
northern hemisphere as the new Moon slid across the solar disk on May 31st. Still, for
astronomical adventurers at Cape Wrath on the north |
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s*****t
发帖数: 1994 | 39 The Powerful Sumatra-Andaman Islands Earthquake
Credit: USGS
Explanation: December's 9.0 earthquake has likely shortened Earth's day by
about three microseconds and may also have tweaked Earth's rotational
wobble. The megathrust earthquake occurred as the Indian tectonic plate slid
further beneath the Burma tectonic plate. The earthquake was the
fourth most powerful since the year 1900 and triggered tsunamis
that tragically killed over 250,000 people in nearby coastal regions. In the
above map, |
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d*********e
发帖数: 3835 | 40 By Alan Levin, USA TODAY
Many of the busiest airports in the Caribbean and Latin America lack basic
safety features that could have prevented the recent crash of an American
Airlines jet in Jamaica, according to pilots, aviation safety experts and
public documents.
No one died when the American Boeing 737-800 slid off a wet runway and
slammed onto an adjacent rocky beach on Dec. 22, but dozens were hurt and
the jet's fuselage was torn open in several places. It was the most serious
accident invo |
|
j***h
发帖数: 4412 | 41 Home prices in Bay Area fall nearly 5%
Dan Levy, Bloomberg News Friday, March 18, 2011
Bay Area home prices slid 4.7 percent in February from a year earlier as
buyers delayed purchases and distressed sales made up half of all
transactions, according to DataQuick Information Systems Inc.
The median paid last month in the nine-county region was $337,599, down
0.2 percent from January, the San Diego-based data company said Thursday
in a statement. It was the fifth straight year-over-year decline
f... 阅读全帖 |
|
j***h
发帖数: 4412 | 42 Home prices in Bay Area fall nearly 5%
Dan Levy, Bloomberg News Friday, March 18, 2011
Bay Area home prices slid 4.7 percent in February from a year earlier as
buyers delayed purchases and distressed sales made up half of all
transactions, according to DataQuick Information Systems Inc.
The median paid last month in the nine-county region was $337,599, down
0.2 percent from January, the San Diego-based data company said Thursday
in a statement. It was the fifth straight year-over-year decline
f... 阅读全帖 |
|
