Science & Mathematics - 2 September 2007

2007-09-02 13:45:20 · 7 answers · asked by Duy 4 in Physics

The volume of a certain rectangular solid is 27 cubic centimeters. Its total surface area is 162 square centimeters, and its three dimensions are in geometric progression. What is the sum of the lengths in centimeters of all the edges of this solid?

please show me work if you can get this, someone tried to explain this to me but i couldn't understand it. Thanks

2007-09-02 13:44:14 · 5 answers · asked by x0xshenanigans 1 in Mathematics

2007-09-02 13:42:13 · 20 answers · asked by alex s 1 in Earth Sciences & Geology

N/A

2007-09-02 13:40:19 · 7 answers · asked by Anonymous in Geography

2007-09-02 13:39:32 · 2 answers · asked by Anonymous in Mathematics

A 50 Ω load uses 1 W of power. What is the output voltage of the power supply? The answer is 7.07 V, please explain the means by which this answer was derived.

2007-09-02 13:39:18 · 3 answers · asked by Chris 2 in Engineering

N/A

2007-09-02 13:39:10 · 11 answers · asked by Anonymous in Geography

2007-09-02 13:38:43 · 3 answers · asked by laura 1 in Mathematics

2007-09-02 13:35:46 · 3 answers · asked by zahras01 1 in Mathematics

2007-09-02 13:33:31 · 5 answers · asked by jag1955 2 in Mathematics

There are pictures of the Milkey Way, but I do not understand how we got those pictures. If we are in it, how did we get the pictures?

2007-09-02 13:32:39 · 12 answers · asked by the real gopy 2 in Astronomy & Space

2007-09-02 13:26:07 · 9 answers · asked by Anonymous in Astronomy & Space

how much water must be evaporated from 36 ounces of a 4% salt solution to make a 5% salt solution? (this would result in a decrease in the quantity of the solution.)

show work please..if you can

2007-09-02 13:26:02 · 4 answers · asked by aajain03 1 in Mathematics

A chemist has a 35% saline solution and a 60% saline solution available. How many milliliters of each of these available solutions should she mix to obtain 700 mL of a 40% solution?

2007-09-02 13:24:09 · 5 answers · asked by aajain03 1 in Mathematics

My opinion; not possible.

1. They would have to know if the universe started expanding from the center of maybe a circle. A straight line. (ex. roll down curtain).

2. If the universe was to "pop" then there would have to be an outer shell of some type?

3. How do scientist know for sure that the universe is the biggest,? Example. If atoms had eyes, what would the universe look like to the atoms? They probally wouldnt see it because its so freaking big. For all we know the universe could be the flick of a humungous lighter that lasts 3 seconds but so big it last 50 billion years for us. (50 billion years being an example too)

Im not canceling out the possibility that it couldnt happen. And if you would like to correct me if im wrong then feel free.

2007-09-02 13:22:12 · 3 answers · asked by my_own_place_23 1 in Astronomy & Space

2007-09-02 13:20:32 · 5 answers · asked by dannywild1 2 in Physics

What are the magnitude and direction of the electric field at a point midway between a -8.0 µC and a +5.0 µC charge 3.5 cm apart? Assume no other charges are nearby.
FIND MAGNITUDE:

Equation:
E=(k/r^2)(absolute value q1 + absolute value q2)(10^-6)
plug in numbers:
E=(9.0x10^9/.035^2)(8+5)(10^-6) = 95510204.08 N/C

2007-09-02 13:19:21 · 2 answers · asked by Jessie L 2 in Physics

i believe it was a hoax no one was the back then they had no cameras on the rocket to do that

2007-09-02 13:17:27 · 11 answers · asked by jorje esquib 1 in Astronomy & Space

Ultimate Earthquake, Ultimate Tsunami, & Ultimate Tornado? Just wondering if i'm the only geek, this **** is really interesting, do ya'll think that a super earthquake will happen the same time a super tsunami and super tornado and end the world? that would suck!

2007-09-02 13:16:40 · 3 answers · asked by alias p 1 in Earth Sciences & Geology

2007-09-02 13:16:05 · 9 answers · asked by Anonymous in Mathematics

"Suppose your hair grows at the rate of 1/30 inch per day. Find the rate at which it grows in nanometers per second. Since the distance between atoms in a molecule is on the order of 0.1 nm, your answer suggests how rapidly atoms are assembled in this protein synthesis."

I'm getting the answer 7.32 E -5 nm/second, but the software I enter my answers into is telling me it's wrong. What is the answer?

2007-09-02 13:14:47 · 2 answers · asked by justme 4 in Physics

2007-09-02 13:11:44 · 5 answers · asked by arigont 2 in Physics

As wkevinc pointed out, this Mayan calendar supposedly predicted the alignment of the sun, moon, earth, and center of the Milky Way. The Mayans didn't have a clue about the center of the Milky Way. Sure, they could see the soft band of light across the sky, but they didn't have the foggiest notion what it was. So where did this galactic reference come from? Certainly not the Mayans.

2007-09-02 13:11:20 · 7 answers · asked by Brant 7 in Astronomy & Space

Using a specific example, describe how an artist used perspective drawing in his/her artwork. Be sure to include the artist’s name and the title of the artwork.

2007-09-02 13:07:22 · 3 answers · asked by Anonymous in Mathematics

im 13. Simple please!

2007-09-02 13:05:29 · 5 answers · asked by Hold_your_color 2 in Astronomy & Space

Well, I am going to Junior year and I am going to take, Math B, PHysics, Pre calculus. Is a graphing calculator necessary? Do you really need a graphing calculator for math b?

I am just thinking whether I should get or not ti 84 silver plus?

When you go to college, Will you need the ti 84 silver plus? Or do you have to buy a higher calculator?

2007-09-02 13:01:08 · 7 answers · asked by Anonymous 4 in Mathematics

hi...we found this tiny yellow pill....about the size of two birth control pills...on one side there is this image....a black circle with a smaller image inside.... 2 horizontal lines on the bottom, 4 vertical rectangles in the center and a half cirle over the two largest rectangles....any ideas or clues as to what it might be...neither of us know what it is...never saw anything like it before

2007-09-02 13:00:10 · 10 answers · asked by Liz L 2 in Medicine

2007-09-02 12:53:21 · 8 answers · asked by J's leather emporium 3 in Zoology

The sum of the positive odd factors of 30 is 24, 1+3+5+15

2007-09-02 12:51:34 · 7 answers · asked by la la la 2 in Mathematics

Serious answers only, please.

2007-09-02 12:49:37 · 7 answers · asked by Anonymous in Biology