## Search found 13 matches

Sun Mar 27, 2011 1:57 pm UTC
Forum: Science
Topic: Miscellaneous Science Questions
Replies: 2958
Views: 711818

### Re: RELATIVITY QUESTIONS! (and other common queries)

Another query I thought of this morning: Imagine a satellite orbiting a high mass concentration at a tangential speed of 0.7 times the speed of light. Another satellite is orbiting this same concentration at -0.7 times the speed of light in the same plane. At what speed will they collide? Reference ...
Fri Sep 10, 2010 5:15 pm UTC
Forum: Science
Topic: Question on transformers (not from cybertron)
Replies: 9
Views: 1300

### Re: Question on transformers (not from cybertron)

Ah, I understand now, so you design it so that whenever the secondary coil has a short circuit the induction in the first coil is big enough to not blow up your circuit. IE More windings is better. But don't more windings become increasingly innefective? (Further away from the core=less flux generat...
Thu Sep 09, 2010 11:38 pm UTC
Forum: Science
Topic: Question on transformers (not from cybertron)
Replies: 9
Views: 1300

### Re: Question on transformers (not from cybertron)

Izawwlgood wrote:http://en.wikipedia.org/wiki/Beachcomber_%28Transformers%29

You're not helping...
Thu Sep 09, 2010 11:36 pm UTC
Forum: Science
Topic: Question on transformers (not from cybertron)
Replies: 9
Views: 1300

### Re: Question on transformers (not from cybertron)

Izawwlgood wrote:I always thought Beachcomber was super lame.

I don't understand you statement. This might be because it's 1:35...

EDIT:
I see now... transformers...
Thu Sep 09, 2010 11:32 pm UTC
Forum: Science
Topic: Question on transformers (not from cybertron)
Replies: 9
Views: 1300

### Question on transformers (not from cybertron)

As most of you know the basic functionality of a transformer is governed by the ratio between primary windings and secondary windings. Now, imagine if i had a transformer with a windings ratio of 1:2, but; there is only one primary winding. This will of course short circuit. Now my question is, how ...
Thu Apr 22, 2010 9:49 pm UTC
Forum: Science
Replies: 11
Views: 1882

Here's perhaps a more compelling visual picture. You are wearing nearly frictionless roller skates. If you are initially at rest, then regardless of how the treadmill below moves forward or back, it will barely move you at all, because there is no friction between you and the treadmill. Now someone...
Thu Apr 22, 2010 9:35 pm UTC
Forum: Science
Replies: 11
Views: 1882

Next question:

A helicopter on a turning table.

Will it take off?
Thu Apr 22, 2010 9:32 pm UTC
Forum: Science
Replies: 11
Views: 1882

EDIT: Just followed my own reasoning and found out my flaw. I was assuming the airplane was stuck on the conveyor, as in driving against a wall, but still able to rotate it's wheels, and move wrt the ground. If you have that assumption, it cannot take off. Although, if it can move freely forward, th...
Thu Apr 22, 2010 9:25 pm UTC
Forum: Science
Replies: 11
Views: 1882

The propeller of the plane drives the plane forward, causing an airflow to form over the wings. The wheels just spin freely, whether it's on a treadmill or not. Imagine you are on roller skates with relatively frictionless wheels, and you are pulling yourself forward by a rope attached to a wall in...
Thu Apr 22, 2010 9:11 pm UTC
Forum: Science
Replies: 11
Views: 1882

I have read all kinds of posts on these forums about the so called airplane on a threadmill. I am really disappointed that no one could find the right anwer to the question... Everyone started about the wheels and that the airplane is not powered by the wheels, but by it's thrusters. All this is irr...
Tue Apr 13, 2010 10:06 pm UTC
Forum: Forum Games
Topic: Count up in binary! (To 1000000 before the other thread!)
Replies: 1638
Views: 187722

### Re: Count up in binary! (To 1000000 before the other thread!

10101100
Mon Apr 12, 2010 11:53 pm UTC
Forum: Language/Linguistics
Replies: 148
Views: 142729

### Re: Language practice threads [new: Korean]

My fluent spoken languages (languages I've grown up using) are: West Frisian (Frysk), Dutch and English. My perfectly understood but not well spoken (learned at school and during holidays) languages are: French and German. My somewhat understood and spoken (I can ask for a specific ice cream, withou...
Mon Apr 12, 2010 11:29 pm UTC
Forum: Language/Linguistics
Topic: Think Before Naming Your Child
Replies: 1622
Views: 345752

### Re: Think Before Naming Your Child

In my familly we still have the tradition of naming boys after the two grandfathers, and girls after the two grandmothers. The grandfather of the fathers side will be the first name, the grandmother of the mothers side will be the first name. So if you get a son, you name him after both grandfathers...