Science & Mathematics - 20 September 2007

I tried looking it up myself, but my results were confusing, I didn't understand it. In *moderately* simplified terms, how does a new galaxy get formed?

2007-09-20 15:21:39 · 4 answers · asked by Jesster 2 in Earth Sciences & Geology

2007-09-20 15:21:13 · 5 answers · asked by TIM S 1 in Earth Sciences & Geology

1. 8n-10-12n=-18
2. 2/3(x+1)=10

2007-09-20 15:21:07 · 5 answers · asked by Anonymous in Mathematics

2007-09-20 15:19:42 · 6 answers · asked by Xmarine 1 in Astronomy & Space

2007-09-20 15:19:12 · 5 answers · asked by Anonymous in Other - Science

(3.8 x 10 to the 5th power) - (2.1 x 10 to the 6th power)

help.

i have no clue how to do this one.
b/c i know the exponents have to be the same..
ugh. help.

2007-09-20 15:18:06 · 4 answers · asked by Emily 2 in Mathematics

(4.2 x 10 to the -8) - (2.3 x 10 to the -8)


-8 (negative eight) is the power so it is the power to negative 8

is the answer 1.9 x 10 to the negative eighth?

2007-09-20 15:16:40 · 3 answers · asked by Emily 2 in Mathematics

2007-09-20 15:14:45 · 4 answers · asked by TERI H 1 in Mathematics

2007-09-20 15:14:13 · 3 answers · asked by Anonymous in Physics

Is there a difference between a live sound, whether it be a human voice or a car, and a recorded sound played through loud speakers? More specifically, are there any tangible scientifically distinguishable elements between the two?

2007-09-20 15:13:49 · 2 answers · asked by Billy188 1 in Other - Science

I need help with the experiment where you prepare a garlic root tip squash. I am trying to write a hypothesis, but I don't understand why you put the specimen over the flame before you look for the stages of mitosis. Already looked at LabBench and couldn't find anything on it. Any help. Thanks.

2007-09-20 15:12:03 · 3 answers · asked by Chomp 2 in Biology

Two angles are supplementary. One angle measures 10degree less than 3 times the other. What are the measures of the two angles?

2007-09-20 15:11:44 · 4 answers · asked by DoWHATiDO 3 in Mathematics

Its a math question, it really says Explain why the product of two absolute values is always a positive number.

2007-09-20 15:10:53 · 9 answers · asked by cccr95 1 in Mathematics

2007-09-20 15:07:36 · 13 answers · asked by Anonymous in Mathematics

A 770 kg car, with a 95 kg driver, is driving up a shallow hill of angle θ = 5° directly
into a strong headwind. The headwind exerts a force 200 N on the car. The coefficient of
rolling friction for the car on the road is 0.025. What force must the car’s engine produce
so that it travels at a constant velocity of 10 m/s.

2007-09-20 15:05:05 · 1 answers · asked by Dave D 1 in Physics

2007-09-20 15:04:36 · 15 answers · asked by Anonymous in Astronomy & Space

A steel ball is 4.000cm in diameter at 28C. A brass ring has an interior diameter of 2.992cm at 30C. At what common temperature will the ball just slide through the ring?

2007-09-20 15:03:10 · 1 answers · asked by Jeena B 1 in Physics

Suppose a 10 x 10 grid represents the number 1. Use 10 x 10 grids to represent the numbers 1.24 and 1.05. Explain how you can use the grids to compare the two numbers.

2007-09-20 15:01:06 · 4 answers · asked by Drama Queen 3 in Mathematics

How do I find the exact value of
arcsin1
Thanks!

2007-09-20 15:00:59 · 1 answers · asked by Anonymous in Mathematics

A rocket moves upward, starting from rest with an acceleration of 30 m/s2 for 2.5 seconds. It runs out of fuel at the end of the 2.5 seconds but doesn't stop. How high does it rise above the ground?

2007-09-20 15:00:55 · 1 answers · asked by thepolishway 3 in Physics

is outer space what we think it is? what are the odds of other life in space? And if so are they nice or hostile.

2007-09-20 15:00:48 · 4 answers · asked by Collin L 1 in Astronomy & Space

Is there a name for that? Like the evaporating dew or something creates a foggy look

2007-09-20 15:00:22 · 7 answers · asked by Adam 2 in Weather

2007-09-20 14:57:13 · 15 answers · asked by jesus d 1 in Mathematics

Please! Please!

2007-09-20 14:57:10 · 3 answers · asked by tropicalsarah10 2 in Chemistry

i know one of them is x=4

2007-09-20 14:55:34 · 3 answers · asked by student 3 in Mathematics

Im trying to find the parametric and symmetric equation for the line of the intersection between the two planes: 3x-2y+z=6 and z=4x+1/2y+5

Can someone assist me in solving the equation? I need something to get me started to solve the problem. Any help will be appreciated. thanks

2007-09-20 14:54:12 · 2 answers · asked by Tony L 1 in Mathematics

PLEASE HELPPPP

2007-09-20 14:50:14 · 3 answers · asked by hotcheerchick619 2 in Geography

Why does a closed, empty, 2-L, plastic soft-drink bottle cave in when placed in a freezer?

2007-09-20 14:48:51 · 2 answers · asked by JustAnotherMarionette. 6 in Physics

2007-09-20 14:46:41 · 2 answers · asked by ohhsnap! 4 in Physics

(bi) Factorise 5x^2 + 8x + 3

I know how to do the above...Ans is (5x + 3) (x + 1)

(bii) Hence find all the factors of 583.

How to do (bii)? Show your workings clearly and explain. Thank you.

2007-09-20 14:46:26 · 3 answers · asked by Anonymous in Mathematics