All categories - 13 October 2007

A periodic sinuous track is installed on an uniform plane slope, such that it intersects the straight fall line at regular intervals. A boxcar with wheels rolls without friction down this track, so that if left to itself it will gain speed as it descends due to gravity alone. Is it possible to build a mechanical apparatus wholly inside the boxcar, containing its own energy source, that will counteract this freefall, so that the boxcar can maintain speeds not exceeding some maximum? No use of jets or propellers or magnets interacting with the world outside the boxcar is allowed, this is a purely Newtonian problem, the apparatus must be totally enclosed inside the boxcar. Assume that the wheel design guarantees that the boxcar will never derail, like a roller coaster car. Also assume that the boxcar is able to dissipate heat energy from its descent, which is necessary in order to maintain average speed.

2007-10-13 11:52:18 · 4 answers · asked by Scythian1950 7 in Physics

in my '97 grand prix-the blower works on all speeds, only when the car is started with the automatic start, however when the car is started manually(turning the key)- it only works on high, is this a ground problem?

2007-10-13 11:52:09 · 4 answers · asked by Anonymous in Maintenance & Repairs

when you lost your virginity?

if theres an interesting story ud be willing to share...go head!

2007-10-13 11:51:58 · 8 answers · asked by Anonymous in Singles & Dating

tattooed?

If I don't like the answer, I will just ignore it.

2007-10-13 11:51:53 · 25 answers · asked by ? 6 in Polls & Surveys

is grey's anatomya rip off of scrubs

2007-10-13 11:51:40 · 2 answers · asked by Philip Augustus 3 in Other - Television

lets say im talking about the average bank
how old do u have to be to open up 1up usually im 17
what do u need to open 1 up
do i need to deposit a certain amount of money to open it up
all i want to do is to put money in to save so i dont spend it
cash in checks when i get a job
n do u have to pay nything to the bank to keep it open
u know like a subscription
answers greatly apreciated

2007-10-13 11:51:34 · 5 answers · asked by Anonymous in Small Business

I love it..his voice is soo beautiful.

2007-10-13 11:51:23 · 11 answers · asked by Anonymous in Rock and Pop

I feel like that information is personal to my child and I am not really comfortable telling others. Feel like it makes it easy for others to place judgement on the parents and therefore disrespects my child.
What do you think?
What would you politely say to people when they ask?

BTW, I am including my in-laws with this....they would tell the world if they knew.

(I have not adopted a child yet......I am preparing)

2007-10-13 11:51:21 · 17 answers · asked by Anonymous in Adoption

we wouldn't need women anymore.

2007-10-13 11:51:07 · 11 answers · asked by Anonymous in Jokes & Riddles

Movies do you like?

Comedy,Drama, Documentary, Family, Horror,Action & Adventure.. also any other genres that you like?

<3 Thanx for answering<3

2007-10-13 11:50:50 · 11 answers · asked by Anonymous in Polls & Surveys

Can they win with their pitching. I've analyzed every aspect, and I believe Rockies will power their way to victory in 6 games.
How can you expect to stop that offensive line-up

2007-10-13 11:49:59 · 9 answers · asked by David D 1 in Baseball

Im totally bored

2007-10-13 11:49:56 · 11 answers · asked by Ember Spark 2 in Polls & Surveys

is'nt god perfect. so how is god a "he?"

2007-10-13 11:49:53 · 21 answers · asked by Anonymous in Religion & Spirituality

2007-10-13 11:49:46 · 13 answers · asked by Mickey Mouse Spears 7 in Polls & Surveys

Eg Fruit bat,
Cave bat,
Tree bat,
Wom bat?

2007-10-13 11:49:36 · 3 answers · asked by Anonymous in Elections

2007-10-13 11:49:26 · 29 answers · asked by 333-half-evil-333 5 in Polls & Surveys

I have the opportunity to purchase a Harley Davidson from someone in the US, does anyone know the importing procedures for this to the UK? Also if I import say 1 used motorcycle per month would I need an importers licence.? Thanx in advance ;-)

2007-10-13 11:49:20 · 4 answers · asked by Anonymous in Motorcycles

Ok. I'm in an 80's musical at school. I'm a mean girl in it. To cut it short, there was a dress i was going to wear in it which i REALLY love but now one of the many costume people has said I can't wear it and I have to wear this ugly black one. The thing is she can't give proper reasons why and I know its just cos she doesn't like me and a little bit of power went to her head. So i tried talking to the other costume people and they said the'd talk to her , BUT NOTHING HAS HAPPENED! I dnt wanna seem like i'm nagging though. So what should I do. If I told my teacher would he think Im just being an idiot?

2007-10-13 11:49:19 · 8 answers · asked by Anonymous in Friends

move on!

2007-10-13 11:48:59 · 5 answers · asked by Anonymous in Polls & Surveys

please show the workings... thank you very much!!! ^v^

2007-10-13 11:48:54 · 10 answers · asked by xxx 1 in Mathematics

2007-10-13 11:48:52 · 3 answers · asked by Anonymous in Philosophy

It nots conjuctivitus because i dont get the pink eye...
however it can be related to sinus since my head and part of my nose ache.

2007-10-13 11:48:37 · 2 answers · asked by Mika 2 in Allergies

i have had a dell dimension since 2001. I recently gave it to my lil sis and she has been using it for 7 months-unfortunately she spends her life on myspace and does her hair weave at the computer(hair is everywhere I never imagined it would cause this situation). It doesnt work now. I turn it on and the dell logo pops up and than a black screen with a blinking cursor and the fan starts to spin at high speed. I cant get into safe mode/cant boot from cd(ie knoppix)/cant get to the cmos. I opened it up and found hair all inside and removed some of it cause the spare can of air that i had was nearly empty. It still doesn't work. Your opinions?

2007-10-13 11:48:23 · 5 answers · asked by zoemayne 1 in Desktops

What kind of food should I make that will impress my boyfriend? I need something easy to make because I am not so good at cooking.

2007-10-13 11:48:20 · 9 answers · asked by E-net User 1 in Cooking & Recipes

2007-10-13 11:48:09 · 1 answers · asked by ~ Yenny ~ 4 in Los Angeles

One of mine is when I ordered a Taco Salad at Wendy's, I was asked about the size - small or large. I wondered why they needed to know that. Well, they only gave me a small chili!

2007-10-13 11:48:06 · 25 answers · asked by only4zzz 4 in Fast Food

It's horrible. You dont have the right to kill someone else, even if theyre inside you're body. If someone is stupid enough to go get pregnant if they dont want a child, they made a stupid choice, but that shouldnt be an excuse to kill someone. I hate it. It should be illegal.

2007-10-13 11:47:54 · 14 answers · asked by ♥ smile ♥ 3 in Law & Ethics

2007-10-13 11:47:21 · 29 answers · asked by oh really? 4 in Polls & Surveys

please help me guys....thank you

2007-10-13 11:47:20 · 3 answers · asked by Anonymous in Global Warming

Where do you go to get an agent for acting and stuff? I live in ks so do you think you could get me an address with a phone number and if you can a web address it would be awesome and also are agents super expensive about how muchwould it cost to get one thanks so much

2007-10-13 11:47:18 · 2 answers · asked by Anonymous in Theater & Acting