Science & Mathematics - 25 October 2007

their orbit is longer?

traveling speed slower or same speed as earth but orbit is longer(just repeating)

2007-10-25 09:37:47 · 6 answers · asked by Dried_Squid 2 in Astronomy & Space

A brick (mass M) is fropped from height h onto a ball (mass m). The mass of M is much much greater than the mass of m. How high will the ball bounce after the collision in terms of h? The collision is perfectly elastic.


I would assume that if the collison is elastic, once the brick hits the ball, they would both bounce up together but that is only a guess. The answer is not 0. It is supposed to be some fraction of the original height. Thanks a lot for your help.

2007-10-25 09:33:38 · 1 answers · asked by Anonymous in Physics

for my chemistry class i need to make a model of a double displacement reaction but i dont even know what one looks like or how to make it! can somebody find a good website with examples and pictures????please

2007-10-25 09:33:16 · 2 answers · asked by jennifer s 1 in Chemistry

What is the x->a method and h ->0 method, which will work better?

f(x) = x^3

f(x) = x^4

f(x) = x^6

f(x) = x^n

2007-10-25 09:32:57 · 1 answers · asked by Brews 2 in Mathematics

if you can, I will do a dance just for you and put it on youtube for you to view

2007-10-25 09:32:42 · 3 answers · asked by Mercury 2010 7 in Astronomy & Space

2007-10-25 09:32:36 · 4 answers · asked by Anonymous in Geography

find (f/g)(6)

2007-10-25 09:29:51 · 2 answers · asked by icygurl555 1 in Mathematics

does the angle of the two items after the collisions always equal 90??
see pic: http://img179.imageshack.us/img179/277/p...

what does this mean?:

"after the collision the two particles have velocities that are directed at equal angles of 46 degrees on either side of the original line of motion of the particle going vertically(x-direction) "

2007-10-25 09:27:47 · 2 answers · asked by alejxa 2 in Physics

If plants are grown in space such as on the ISS, are tropism movements different? Do their roots form differently? Do their blossoms unfurl differently? I would love links to images and any articles about gravity and plant growth if possible.

2007-10-25 09:18:38 · 3 answers · asked by Anonymous in Botany

2007-10-25 09:17:51 · 4 answers · asked by imberkami p 1 in Mathematics

The thing is, I want to keep the driven pulley to be less than 10 inches in diameter. If I use a second drive train, with another 3 inch pulley, what would the 2 driven pulleys be like?

2007-10-25 09:16:15 · 4 answers · asked by Blonde from D islands 2 in Engineering

I was watching a show on bbc they said this woman was really over weight cause she was 18 stone. what is that in pounds.

2007-10-25 09:14:56 · 4 answers · asked by Anonymous in Mathematics

if medics could acheive brain transplants from one body to another - would the patient be a totaly different person?

2007-10-25 09:11:56 · 23 answers · asked by pl_welch 2 in Medicine

Find the sub-intervals in which the function is increasing and decreasing.
Find the sub-intervals in which the function is concave up and down.
Find the inflection points of the function f on the interval? Your answer should be a set of entries of the form inflection_pt(x1,y1)

2007-10-25 09:11:40 · 1 answers · asked by Anonymous in Mathematics

What is the crustal thickness in Georgia(US) in both kilometers and miles?

2007-10-25 09:09:59 · 1 answers · asked by Anonymous in Earth Sciences & Geology

2007-10-25 09:08:35 · 6 answers · asked by Anonymous in Geography

-----> please n() mean answers =(

2007-10-25 09:05:38 · 2 answers · asked by Anonymous in Chemistry

it's not log"3x", it's log 3 of x.

2007-10-25 09:03:18 · 2 answers · asked by Daniel B 1 in Mathematics

They say that the Earth should last for at least 5 billion (5×10^9) more years, before the Sun becomes a red giant, then the earth will be melted into the atmosphere of the Sun.
Can anyone please help prove this theory as a wrong statement, to backup supported judgements of true theory about when the Sun will actually reach Earth or its orbit.

2007-10-25 09:01:39 · 7 answers · asked by Hitesh_M 2 in Astronomy & Space

y= (1-sec x) / tan x

2007-10-25 09:00:10 · 2 answers · asked by Anonymous in Mathematics

Is every element on the table of Mendeljev already found on Earth, or are there still some undiscovered?

2007-10-25 08:55:10 · 1 answers · asked by JohnyD 3 in Chemistry

x^2-x-56

It may seem simple but right now I'm stuck. An answer with a little explanation would do. Thanks a bunch guys. :)

2007-10-25 08:54:12 · 6 answers · asked by timmytommy92 1 in Mathematics

2007-10-25 08:54:01 · 6 answers · asked by joebeina 1 in Chemistry

3 1/3X is greater than -6 1/3

Solve the inequality.
Show your work I lowered it down to this what do i do next?

2007-10-25 08:52:21 · 7 answers · asked by soccermom71968 1 in Mathematics

2007-10-25 08:49:15 · 7 answers · asked by Anonymous in Mathematics

i know how to do it normally just not this way so help me out :)

2007-10-25 08:45:20 · 4 answers · asked by joebeina 1 in Chemistry

What is the equation for the Pythagorean theorem?

2007-10-25 08:43:36 · 6 answers · asked by Kimberly M 3 in Mathematics

2007-10-25 08:40:20 · 1 answers · asked by Anonymous in Physics

2007-10-25 08:40:12 · 2 answers · asked by Kay bay bay 1 in Chemistry

2007-10-25 08:39:55 · 1 answers · asked by sehchi_b18 1 in Mathematics