Science & Mathematics - 24 September 2007

2007-09-24 17:18:26 · 1 answers · asked by chini s 1 in Earth Sciences & Geology

Two particles each have a mass of 5.90 10-3 kg. One has a charge of +5.0 10-6 C, and the other has a charge of -5.0 10-6 C. They are initially held at rest at a distance of 0.95 m apart. Both are then released and accelerate toward each other. How fast is each particle moving when the separation between them is one-half its initial value?_______m/s

2007-09-24 17:18:22 · 2 answers · asked by Hera08 1 in Physics

2007-09-24 17:16:14 · 20 answers · asked by mam 1 in Medicine

I cant figure it out....

2007-09-24 17:14:51 · 9 answers · asked by Anonymous in Mathematics

2007-09-24 17:12:43 · 6 answers · asked by Anonymous in Geography

i mean, is it possible to survive, in it for like a day even. i don't know much about it, but if no one has been in it, how do they know what is goiing on in the black hole to begin with? yes its a dumb question.

2007-09-24 17:12:06 · 9 answers · asked by TheDarkness 1 in Astronomy & Space

it is theoretically possible to place a satellite at a position between the earth and the sun on the line joining them, where the gravitational forces of the sun and the earth on the satellite combine in such a way that the satellite will execute a circular orbit around the sun that s synchronous with the earth's orbit around the sun. (In other words, the satellite and the earth have the same orbital period about the sun, even though they are at different distances from the sun. the satellite always remains on the line joining the earth and the sun.)
write an expression that relates the appropriate circular orbital speed of v of a satellite in such a situation to its distance r from the sun.

Expressions may also contain quantities such as:
Ms, Me, D, Rs, Re plus the gravitational constant G.

please answer this, cant provide the figure i dont know how to post it here

2007-09-24 17:08:03 · 3 answers · asked by la 1 in Astronomy & Space

Someone asked me this question, and I didn't get it. I really want to know. Please help.

You are taking a test in which matching questions are worth 10 points and fill in questions are worth 15 points. It takes 3 minutes for each matching question and 5 minutes for each fill in question. The total time allowed is 60 minutes and you do exactly 18 questions. your score is 195 points by using the entire 60 minutes. Find how many questions of each type you answered correctly.

How many matching questions did you answer correctly?_____________
How many fill in questions did you answer correctly?______________

2007-09-24 17:06:12 · 3 answers · asked by Caitlin 1 in Mathematics

what is the scientific answer for friut loops turning poop green

2007-09-24 17:05:45 · 8 answers · asked by mr_oden76 2 in Biology

2007-09-24 17:03:53 · 8 answers · asked by Anonymous in Astronomy & Space

An object mass m dropped from a height h is moving at a velocity v just before ot hits the ground. If the acceleration of gravity is g, the average friction force acting on the object is...

Note: the answer is (2mgh-mv^2)/2h. I just need to know how to get there :-]]

2007-09-24 17:01:48 · 1 answers · asked by heyy ya 1 in Physics

For geometry, I plotted points, and it forms a square (I checked with distance formula and slope, it is a square). What does it mean that the diagonals bisect each other?
No lines/rays/segments of the square are dividing another into two equal parts, I don't understand.

2007-09-24 16:56:42 · 4 answers · asked by maosportz 2 in Mathematics

i always thought they were about the same thing

2007-09-24 16:54:01 · 6 answers · asked by cherrihill 5 in Weather

it says for 19-24 use properties of equality to solve the equation.

19 7X+15=12x+5

how do i do this problem??

2007-09-24 16:53:56 · 10 answers · asked by Max H 2 in Mathematics

Why is UV radiation only a little bit harmful and radio waves not harmful at all?

2007-09-24 16:51:23 · 10 answers · asked by Anonymous in Astronomy & Space

on sept 26 =)

2007-09-24 16:50:29 · 2 answers · asked by Anonymous in Astronomy & Space

i want to know

2007-09-24 16:40:47 · 2 answers · asked by Anonymous in Medicine

i get why we have daylight savings but not why some places have it and others dont, can anyone please explain? and name some countries where daylight savings doesnt exist?

2007-09-24 16:39:11 · 3 answers · asked by Anonymous in Earth Sciences & Geology

I had one get into my cell phone of my mom, which passed away this year, I have old photo of me, with my sisters. Which the photo was just put in my cell phone and use it for my screen saver. It show three white circles with a image of my mom, which she was not the picture when it was taken.

2007-09-24 16:37:48 · 15 answers · asked by Margaret L 1 in Paranormal Phenomena

Harry is finding it very difficult to muster enough torque to twist a stubborn bolt with a wrench and he wishes he had a length of pipe to place over the wrench handle to increase his leverage. He has no pipe, but he does have some rope. Will torque be increased if he pulls just as hard on a legnth of rope tied to the wrench handle?

a) Yes
b) No

2007-09-24 16:34:40 · 4 answers · asked by ? 6 in Physics

2007-09-24 16:33:22 · 7 answers · asked by Anonymous in Biology

2007-09-24 16:28:04 · 1 answers · asked by Anonymous in Botany

P(0, -4) L: 2y=x

All i could get is y = 2/x....

How can I finish this problem????

2007-09-24 16:25:47 · 1 answers · asked by Anonymous in Mathematics

There is a deep vertical cave in New Zealand called Howard's Hole. Rumours say that it is SO deep that when you go down during daylight it is SO dark at the bottom that when you look up you can see the stars.

Is this possible? I thought that it would be impossible to see the stars during daytime no matter how deep the hole. Will the bright daylight still not obscure the stars no matter how deep you are? You can not use an optical telescope during daylight, no matter how powerful it is to see the stars so why would a deep hole be any better.

2007-09-24 16:25:38 · 4 answers · asked by Hermun 2 in Astronomy & Space

The frictional force is negligible. The block starts from rest and moves 14.0 m in 9.00 s.
(a) What is the mass of the block of ice?
kg

(b) If the worker stops pushing after 9.00 s, how far does the block move in the next 9.00 s?
m

2007-09-24 16:24:59 · 2 answers · asked by b_rad_geezy 1 in Physics

2007-09-24 16:24:19 · 6 answers · asked by leigha_lkm 1 in Astronomy & Space

I have a rod attached to a plate and I am rotating the rod through 180 degrees. The rod is 6 inches long, attaches to a plate of 2X2 inches. The material is solid copper on both. Rod diameter is 1". The plate is fixed to a concrete slab and it will not move but I need to determine the shear force to tear away the pipe

2007-09-24 16:19:23 · 2 answers · asked by J B 1 in Engineering

i have a false feeling i can tell a number has two prime divisors, one small, one huge. i checked 1983, 6976, and 9687372. hope it gets disproven. i would like something more meaningful than r u ok?

2007-09-24 16:17:23 · 3 answers · asked by atrichtch 2 in Mathematics

2007-09-24 16:17:10 · 2 answers · asked by dr.whooo 2 in Mathematics

hey guys!! I have Genetics Honors and unfortunately I'm clueless about it! Can you give me a website that u can think has enough information about genetics? Thanks! And some other tips on what to study!

2007-09-24 16:03:06 · 4 answers · asked by chinita 2 in Biology