Science & Mathematics - 10 December 2007

I'm a keen photographer and currently use a Canon EOS 400D, I was wondering what sort of results I could expect if I were to use it with a telescope for astrophotography.

I was thinking about getting a Bresser Messier R90mm or R130mm
http://www.scopesnskies.com/prod/Bresser/telescope-for-astronomy/messier130.html
(link to the R130mm)

What sort of results or things would I be able to see with this telescope? and how well would they translate into a digital picture?

2007-12-10 06:42:37 · 6 answers · asked by cherrypowered 1 in Astronomy & Space

If a certain sample of monoatomic ideal gas has pressure of 100kPa. What is internal energy of 1m³ of gas.

Assume nothing except atoms of ideal gas do not interact and obey Newtonian mechanincs.

Please, people, do not use Maxwell distribution, and the like. The real solution is only three lines long and invololves no integration (at least expicitly).

2007-12-10 06:39:51 · 3 answers · asked by Alexander 6 in Physics

A box contains 35 red and 5 black discs. a disc is selected at random and its colour is noted. the disc is then replace in the box

in eight selections find the probability that a black disc is selected

exactly once and atleast once

2007-12-10 06:39:49 · 3 answers · asked by NKS 2 in Mathematics

2007-12-10 06:39:38 · 7 answers · asked by Zarathustra 2 in Geography

A 1500-kg car is allowed to coast along a level track at a speed of 8.0 m/s. It collides and couples with a 2000-kg triuck, initially at rest and with brakes released. What is the speed of the two vehicles after they collide?
A) 4.4 m/s

B) 6.0 m/s

C) 4.6 m/s

D) 0.75 m/s

The answer I get is 3.4m/s because since the momentum is conserved the answer should be: (8m/s * 1500kg)/(1500kg+2000kg). Can someone confirm this?

2007-12-10 06:36:51 · 4 answers · asked by Anonymous in Physics

2007-12-10 06:35:29 · 20 answers · asked by Anonymous in Astronomy & Space

Flying high like the sun, soaring in the blue enormity of the mountain sky
Descending, like a rock dropping out of the heavens, 
Like a bolt of lightning, screeching as it races right down at its prey, Plunging into icy water with all of Earth's harshness
Reappearing from the water's darkness, climbing up, up into the sky, 
Shedding water off its wings, now glistening like diamonds, as it speeds, higher and higher into the crystal heavens
Stopping as it speeds its climb, 
It peaks, levels and circles once again
The world down below applauds at its feet, The wind whistles with amazement

The water sore from its ripping talons, which slashed the clear water's surface causing ripples, making only minimal noise compared to the damage it suffered

The Eagle, Nature's Predator.

2007-12-10 06:34:51 · 3 answers · asked by Stacy 1 in Earth Sciences & Geology

2007-12-10 06:34:15 · 4 answers · asked by STORMY K 3 in Earth Sciences & Geology

Alright, pretty simple, follow this link...http://www.ms.uky.edu/~ma123/exam2.xhtml

and its questions #8, 10, 11, 13. I missed those on the original exam, and our teacher didn't have time to go over them. Whomever answers the most, and gives me a general quick explanation of how they got the answer will get the 10 pts.

2007-12-10 06:31:01 · 1 answers · asked by ? 2 in Mathematics

i believe my caculus text is giving me the wrong answer
can anyone help
thank you !

2007-12-10 06:29:15 · 1 answers · asked by tafaghodi_t 1 in Mathematics

2007-12-10 06:24:42 · 4 answers · asked by jethi_sonal87 1 in Mathematics

Why it so happens?

2007-12-10 06:23:00 · 5 answers · asked by Ghouri 1 in Physics

Having experience such.
I found it to be..........?

2007-12-10 06:22:31 · 17 answers · asked by Anonymous in Paranormal Phenomena

A loaded flatbottom barge floats in fresh water. the bottom of the barge is 4.53 m below the water line. When the barge is empty the barge's bottom is only 1.08 m below the water line.
What is the difference between the pressure on the bottom of the loaded barge and the pressure at the water line?

I GOT THE FIRST PART.
the answer is 44394 Pa,
im not sure if its significant in answering the next part..


If the surface area of the bottom of the barge is 496 m^2, what is the weight of the load in the barge?

Answer in units of N.

like i said for the previous question, you dont have to give me the answer, a simple equation and explanation will be very helpful. THANKS!!

2007-12-10 06:20:48 · 3 answers · asked by (: 2 in Physics

How do you find an equation in terms of n that gives the sum of the first n integers squared. (1^2 + 2^2 + 3^2... + n^2)

2007-12-10 06:19:59 · 3 answers · asked by jjjjjjjjjjjjjjjj 1 in Mathematics

this phenomenon deal with space field, i want sorry because my english not very good but i can understand you, this phenomenon will be huge proofment .......contact with me

2007-12-10 06:19:51 · 11 answers · asked by star D 1 in Astronomy & Space

Any help would be greatly appreciated!
If a certain sample of an ideal gas has a temperature of 104 degrees C and exerts a pressure of 2.3 x 10^4 Pa on the walls of it's container, how many gas molecules are present in each cm^3 of volume? assume that the gas is ideal. The gas constant is R=8.314 J/mol K and avagadro's number is NA=6.022 x 10^23 molecules/mol.

2007-12-10 06:18:22 · 2 answers · asked by meeko 2 in Physics

2007-12-10 06:17:11 · 9 answers · asked by Casanova 1 in Mathematics

To convert Celsius to Farenheit:
1. Identify temparature in Celsius
2. Multiply it by 1.8
3. Add 32 to the result
The answer is temparature in Farenheit.

Explain WHY do you have to multiply by 1.8 and why do you have to add 32?

2007-12-10 06:16:17 · 3 answers · asked by Anonymous in Weather

I'd like to be a white snow wolf. How about you?

2007-12-10 06:15:59 · 15 answers · asked by Mr Geek 2 in Zoology

how are they handled, what is done to ensure these people are not exposedto an unacceptable risk.

2007-12-10 06:15:04 · 8 answers · asked by \-696))) es.s.s.AnswERA (((6 1 in Engineering

Why can moss grow in the unsuitable conditions for life of other plants?

2007-12-10 06:15:02 · 2 answers · asked by Angelic 3 in Botany

not in front of the Q?

2007-12-10 06:11:29 · 3 answers · asked by Anonymous in Physics

which of the following ions has a noble gas electron configuration?
A) Cr3+
B) Fe3+
C) Cu2+
D) S2-
E) Zn2+
thank you for any help:)

2007-12-10 06:10:16 · 3 answers · asked by bocabrunette714 1 in Chemistry

2007-12-10 06:10:05 · 12 answers · asked by Anonymous in Parapsychology

Here is the question:

"Which pair of equations below represents lines that are parallel?

A. y =1/5x - 5
y = -5x + 2

B. y = 2/3x
y = 2/3x - 4

C. x + y = 4
x + 2y = 8

D. y = 3x - 4
y = 5x + 2

I am taking a test that is worth ALOT of my grade. Thanks

2007-12-10 06:09:38 · 12 answers · asked by Anonymous in Mathematics

I wanna know how a bat protects itself a fruit bat to be spacific

2007-12-10 06:06:51 · 2 answers · asked by Vanessa A 1 in Zoology

(a) Find the centripetal acceleration of the car. in (m/s^2)
(b) Find the force that maintains the centripetal acceleration (N)
(c) Find the minimum coefficient of static friction between the tires and the road that will allow the car to round the curve safely.

2007-12-10 06:05:01 · 1 answers · asked by Alyssa` L 1 in Physics

2007-12-10 06:04:47 · 11 answers · asked by Nige 3 in Astronomy & Space

2007-12-10 06:04:11 · 10 answers · asked by Munec 1 in Mathematics