Science & Mathematics - 3 January 2007

i decided to buy a telescope on around 200-300$
i find some cheap telescoope in ebay....
like 6" NEWTONIAN REFLECTOR TELESCOPE

* 150mm (6 inches) concave objective mirror
* Focal Length : 1400mm (55")
* Plossl 25mm Eyepiece
* Plossl 10mm Eyepiece
* 2x Barlow lens
* Moon Filter
* Large Collapsible Aluminum Tripod with Accessory Tray
* Equatorial Telescope Mount

which telescope is best for serious study !!!! what are the necessary things i need to buy,,,,to c clear big image of plantes moon,,,,,,,,,,,,,,and what do i need to do to take pictures.............
help me .......

give me some nice ideas on telescope................i need a nice good telescope which can be updated as i need,and can take pictures with nice resolution.................

2007-01-03 04:36:07 · 7 answers · asked by eminent_youtom 1 in Astronomy & Space

2007-01-03 04:34:08 · 21 answers · asked by Anonymous in Astronomy & Space

I'd like to know the "physical difference." Has there been a study that shows a physical difference in the brain when a person has a memory and when they have a thought?

2007-01-03 04:10:57 · 1 answers · asked by Anonymous in Medicine

Can anyone explain this question to me?

Use a letter to represent the unknown number and write the problem as an equation. Then, solve the equation.

In a cricket league, teams get 5 points for a win, 3 points for a draw, and 0 points for a defeat. After 20 matches, Mathstown have 80 points. They have only had 2 defeats. How many of their matches have been draws?


Anyone have any clue how to write that as an equation and why?

xxjes

2007-01-03 04:00:46 · 20 answers · asked by Anonymous in Mathematics

x means multiply(4+2)multiply by 2 -3X(5-3)multiply by 2

2007-01-03 04:00:26 · 26 answers · asked by theresa s 1 in Mathematics

This question is so annoying been trying to work it out for ages here it is. A seawater pumping station is to pump 15.6 t/h of seawater (relative density 1.03). If it is desired that the velocity in the intake is not to exceed 3/ms and the velocity in the outlet pipe not to exceed 5m/s determine suitable inlet and outlet pipe diameters.

2007-01-03 03:59:19 · 3 answers · asked by Anonymous in Engineering

Ok I belaive my school book, but does the Balkan Peninsula still there, like did they crange the name or something.
I know I'm a dumb *** -_- But isn't that how you learn, by asking questions.

2007-01-03 03:55:56 · 5 answers · asked by †Triptych† 2 in Geography

:-|

2007-01-03 03:54:42 · 22 answers · asked by ? 1 in Zoology

you know, from the theory of relativity we obtain:

(dx)^2+(dy)^2+(dz)^2+(c*dt*i)^2=(ds)^2

where dx, dy and dz are distances measured on their respective axes x, y and z.

i is an imaginary number

and c*dt*i is a temporary dimension

and applying the theorem of pythagoras to each coordinate you obtain a "space-time" distance.

I understand that, what I don't understand is the phisical meaning of a "space time distance"

¿what is exactly a space-time distance?

sorry if you find a mistake in the text, I don't speak english very well, I speak spanish.

2007-01-03 03:54:00 · 6 answers · asked by paul0txyz 2 in Physics

Is it Nitrogenous Bases or Nucleobases

2007-01-03 03:52:42 · 7 answers · asked by Anonymous in Biology

2007-01-03 03:50:53 · 32 answers · asked by Anonymous in Zoology

2007-01-03 03:49:41 · 5 answers · asked by enchantingmanish 1 in Engineering

2007-01-03 03:47:46 · 14 answers · asked by Tynir 2 1 in Earth Sciences & Geology

2007-01-03 03:47:26 · 12 answers · asked by CPJ 1 in Engineering

2007-01-03 03:47:15 · 18 answers · asked by jsscrundell 1 in Zoology

When I was a teenager in AR (Arkansas, not Arizona), there was an insect that I found on several occasions, but searches to find out what I saw have yeilded no results. I would like some input into what I saw.

It was antlike in it's shape, and about the size of a carpenter ant. However, it didn't have any other "ant" characteristics like brown/black/red color. It was fuzzy like a bee, and had a bright orange and black striped thorax and abdomen. Any clue as to what this insect was/is?
Pics please, or links to pics would be greatly appreciated.

2007-01-03 03:45:56 · 14 answers · asked by Jessica L 1 in Zoology

2007-01-03 03:45:11 · 7 answers · asked by CPJ 1 in Engineering

as in .uk is the United Kingdom, what is .is?

2007-01-03 03:44:17 · 12 answers · asked by Anonymous in Geography

IS it related to thermal expansion?

2007-01-03 03:43:17 · 10 answers · asked by karush 2 in Physics

2007-01-03 03:42:43 · 15 answers · asked by james 2 in Astronomy & Space

using the formula = E^n=218.0x10^ -20/n^2 Joules

where n is the energy level
find the solution if n = 3, and again if n= 4
* Keep all number relative to 10^ -20 for graphing.

thankyou.

2007-01-03 03:41:18 · 4 answers · asked by Azumi 2 in Mathematics

Most people know that pi is the ratio of the cricumference of a circle to its diameter. What is not intuitive, however, is why this number is necessarily a non-repeating number. We know now by the various uses of trigonometry and calculus how to determine pi. When, however, did mathematicians know the nature of pi, and how? I mean, I could measure the circumference of a circle (say, take a string of known length and make a circle with it), then measure its diameter, and I will maybe get 3.14, but of course, my measurement would not be exact enough to know that it is an irrational number. SO....how did they do it?

2007-01-03 03:40:58 · 9 answers · asked by Rob K 2 in Mathematics

I have a fish tank with some plants and was wondering if the plants will grow, specifically, do plants need UV rays or just any light (photons) will do?

2007-01-03 03:40:03 · 4 answers · asked by alfa 1 in Botany

A titration was started by taking 20ml of 0.01 molar HCL.Then A SOLUTION OF NaOH WAS GRADUALLY ADDED .By mistake the end point was missed and excess NaOH was added.At the end the solution was 0.0001molar in NaOH.What was the pH of the solution at the beginning,at the end point and at the end of titration?

2007-01-03 03:39:35 · 3 answers · asked by flowering_flower1 1 in Chemistry

Taking the big bang theory in account it states that at one point the universe was focused in one area, ss extremely dense and hot. And currently the universe is expanding from a big explosion that occured 13.7 billion years ago. And eventually the universe will retract back into its original state. Anyway my question is have they stated if there have been more than one cycle of this expanding and retracting of the universe? And where did this original material that created the universe spawn from?

2007-01-03 03:38:50 · 16 answers · asked by Anonymous in Astronomy & Space

if you believe it will, then it already has. Is it true that if you could travel to earth from mars in less than a blink of an eye you would arrive approximately in the roman era?

2007-01-03 03:37:19 · 36 answers · asked by jan the gooner 2 in Astronomy & Space

2007-01-03 03:36:05 · 8 answers · asked by kangaroo 4 in Zoology

I have a device that puts out a consist tempeture when it is in operation. I would like to know how to convert the time and temp during operation to a BTU per time period.

2007-01-03 03:35:21 · 5 answers · asked by wrench277 1 in Physics

as far as space & the solar system are concerned this year?

2007-01-03 03:35:09 · 3 answers · asked by Maurice H 6 in Astronomy & Space

I want to study astronomy when I get older and I just realized that I have no idea how a black hole works. I'm also interested in finding out about the expansion of the universe. They say that ever since the big bang, the universe has been expanding. Is that true? If so, what is it expanding into? Just curious... O_o ?

2007-01-03 03:32:51 · 6 answers · asked by Can YOU make me LOL? 2 in Astronomy & Space