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The planets are unusual, not the rocks that are not planets. Those are quite common in comparison. :)

What do you think and why?

Let's deconstruct this. Power is energy per second. How much energy is required to lift 50kg by 12m? How much power does it take to impart that energy in 6 seconds?

What do you think the answers are and why?

This problem involves solving simultaneous equations.
You need to write two equations (one for the present, and one for 8 years time) to solve for two variables (the man's age and his daughter's...

Scam artists generally don't return the money they scam.

It is the way it is because if it wasn't the way it is you wouldn't be here asking why it is the way it is.
What I mean to say is that we are looking back on everything that has happened in the...

Some would disagree with that

?? Why do you say this?
I give it a few years at most, if it isn't being done already...


Uhhh I don't think that's the answer, there's a lot of dialogue in the bible, not all of it is god talking.

I don't understand, we use all of our brain, where did you get the notion that we don't??


To elucidate: In a pressure cooker, due to the high pressure, the boiling point of water increases to 122 Celsius which is how it allows hotter cooking.

It's mostly stuff in people's head, or exaggerating normal things such as wind etc. They don't see a ghost, they see something that they interpret as a ghost. The brain can get confused, especially...

Ghosts are not real, so probably just in your head.

Crazy stuff sounds about right, actually.

Yes. The answer is nothing

Aboven, you seem to be confused.
You are posting on first the astronomy forum, then on the other science forum.
Science is to do with the study of measurable things. Things that we can predict...


It's important to point out that these aren't theories, but hypotheses. There is no evidence to back either of these ideas. They have a lot of hold because they turn out to be quite elegant...

As long as you remember to perform the same operation to both sides of the equation, the equation will stay the same. So, the idea of transposing is to cancel out things you don't want on one side of...

How far have you got? We won't just give you the answer here, and understanding where you are having problems will help us to help you!

multiply bottom equation by 3, then add the equations together, what do you get?

Phone cameras can produce weird effects of things in motion due to the rolling shutter, but I can't think of anythign in motion here.
Was it present on the picture? Can you upload it?

Sooooo confuuuused. The mosquito is clearly at 0 (mean) velocity at some point in time, infinitesimal or not. Whereas the train clearly is never traveling at 0.

The only real solution is 1, but I can give the 2 complex solutions if you want.


I think the answer is that the bug is not rigidly coupled to the train, so the bug may be moving 0, but the train will still be moving through it.

This is interesting, this is clearly incorrect, but I don't know how to express it in words.

How much momentum does the bullet have?
Therefore how much momentum does the rifle have?
Therefore what velocity is the rifle travelling at?
What must the momentum of the wooden block +...


It's true that it doesn't matter, I was asking to try and help some thought processes along :)


The only common factor is 2, can you do it from there?

Depends on the wasp, but your common garden variety wasp I would say that on the Schmidt Sting Pain Index, it's around 2.
(follow that link! It's really interesting and I love the descriptions he...

Are you replacing or not?

As curly ben said, use totaldistance/totaltime. Also, are you sure it asks to the nearest kilometer? And not to the nearest kilometer per hour or something? Because otherwise the units are wrong.

And please specify which country you want help with!

The apocolypse is now the day after my birthday, 28th January 2011.
I just want my presents first OK?

For what? Perimeter of a rectangle? If so, then yes.

Fill in the blanks:
Because the ___________ opf cobalt is ______, we know that 1 mole of cobalt weighs _____ grams, so therefore we know that 117.86 grams is equal to _____ moles of cobalt. A mole...

We have done it in mice, and we have created human embryos from a single female egg (no sperm), however it's long way to go before it's viable as a fertilisation technique. It's possible and being...

I'm not sure what you're asking, but you can expand the expression:
m8 = \begin{cases} m8, & \mbox{if } m \ge 8 \\ (m8), & \mbox{if } m < 8 \end{cases}
let me know if you're asking...

Yeah he was probably a cat being a cat. It's just a cat. Nothing paranormal, just a cat.
A cat, like a dog, but a cat. Just a cat.

And now you can help.
http://www.planethunters.org/ is a scientific setup that believes that humans are better at categorising data than a computer can be, so they want you to analyse data to look...


Placing it on the right hand side would hamper your sword arm when defending your homestead against the undead.
Apart from that your conclusions seems sound to me. Rails are normally placed on...

Can you name another equilateral quadrilateral?

Here is a neat little app based around eye color, from what you have told us, there seems to be about 75% chance for brown eyes.
What Color Eyes Would Your Children Have?
Skin and Hair color...
