Science & Mathematics - 6 August 2007

Please don't be mean. I realize not everyone has the same beliefs but it doesnt make it right to impose your views on somone who didnt ask. Thanks.

2007-08-06 20:33:46 · 11 answers · asked by Anonymous in Other - Alternative

Could anyone who can tell me the difference between Ag2O and AgO, and how about the solubility of the inorganic matters in pure water?
Any answers and discussion will be highly appreciated!

2007-08-06 20:31:14 · 3 answers · asked by bin l 1 in Chemistry

the concentrated acid is 69% with an sg of 1.42. Is there a formula to calculate dilutions

2007-08-06 20:22:32 · 3 answers · asked by Derek A 2 in Chemistry

2007-08-06 20:08:39 · 2 answers · asked by Anonymous in Chemistry

Considering stars of millions of light years away, meaning that when we look up and see the stars, we are actually looking at what the stars looked like millions of years ago, how do we know that there are still stars up there.

2007-08-06 19:49:14 · 12 answers · asked by ZdE 2 in Astronomy & Space

determine the rate of the boat in still water. Determine the rate of the current. (hint: switch 45 minutes into hours). I had this math problem on a test in 1998, still don't know how to friggin figure it out :(:(:(.

2007-08-06 19:47:39 · 7 answers · asked by Anonymous in Mathematics

can anyone pls tell me what is the formula for common tangent,,??.....explain by following sum
1.A common tangent to 9x^2-16y^2=144 and x^2+y^2=9 is...?

2.the equation of tngt to hyperbola 2x^@-3y^2=6 at(3,2) is....?

2007-08-06 19:38:14 · 5 answers · asked by pjd_0501 2 in Mathematics

I have a total of 1000 marbles, with 300 red, 600 blue, 100 green.

P(red marble) = 30%
P(blue marble) = 60%
P(green marble) = 10%

If I take a sample of 10 marbles..

What is the probability distribution of red marbles marbles? In other words, what is the expected value of getting 0,1,2,3,4,5,6,7,8,9,10 red marbles in the sample?

I don't need a list of the E(x) of 0-10, but please show work on how to do one or two examples.

2007-08-06 19:36:58 · 3 answers · asked by Dave H 2 in Mathematics

2007-08-06 19:26:55 · 2 answers · asked by Kartia A 1 in Chemistry

i need to know what other organisms may live in the same area as a percula clownfish and what non-living things may be in the same area as well (such as rocks, sand etc.)

2007-08-06 19:22:26 · 8 answers · asked by Anonymous in Zoology

If i get a 20% discount and i want to use it on something that costs 45$ wat will the cost end up? How do u find out how much it costs? What will the cost be if i want to use the 20% discount on something that costs 65$?

2007-08-06 19:20:23 · 10 answers · asked by Anonymous in Mathematics

2. sample of gas at 25 deg. celcius has pressure of 1.2 atm. Calc. the final pressure if the temp. is changed to 100 deg. celcius at constant vol.

2007-08-06 19:19:31 · 1 answers · asked by ms_janet 1 in Chemistry

Can electrolytes work as capacitors?

2007-08-06 19:13:07 · 3 answers · asked by Dave 3 in Chemistry

What most affects elastic modulus

2007-08-06 19:11:13 · 2 answers · asked by thejimmy 1 in Engineering

2007-08-06 19:09:15 · 4 answers · asked by Anonymous in Mathematics

2007-08-06 19:00:23 · 3 answers · asked by Anonymous in Biology

2007-08-06 18:53:36 · 2 answers · asked by Anonymous in Mathematics

2007-08-06 18:49:33 · 2 answers · asked by Gurang 1 in Biology

Trying to solve for the variable.

2007-08-06 18:43:21 · 9 answers · asked by Anonymous in Mathematics

take a test, or as many as you like, and tell me how you scored. tell me which test you took and what your score was for each one.

http://www.lizardpoint.com/fun/geoquiz/

also, please tell me where you're from

2007-08-06 18:40:09 · 6 answers · asked by RQ 2 in Geography

What is the scientific name of Polysterene

2007-08-06 18:37:43 · 4 answers · asked by ma. ameriza f 1 in Chemistry

A tennis ball with a speed of 10.0m/s is thrown perpendicularly at a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 8.0m/s. If the ball is in contact with the wall for .012s, what is the average acceleration of the ball while in contact with the wall?

2007-08-06 18:27:50 · 4 answers · asked by sara.girl122 1 in Physics

I often sit and poner whether or not the Lunar landings actually occured. I am not one of those people who watch those TV shows and immediately think HOAX! But it's hard to believe that NASA would send man to a new front with hardly any experiments to ensure there safety.. I don't know much about the tests and experiments NASA did prior to these missions but to think of the safety issues involved with sending a man to the moon, and the likely hood for survival seems pretty low. How did NASA know that the spacesuits the astronauts wore were going to keep the astronauts warm on the moon. I truly believe man has landed on the moon.. I would just like to know some of the preperations NASA took for such an astronaumical safety risk.

2007-08-06 18:24:28 · 13 answers · asked by werdnerd 2 in Astronomy & Space

In humans, the ABO blood type is under the control of autosomal multiple alleles. Colour blindness is a recessive X-linked trait. If two parents who are both type A and have normal vision produce a son who is colour blind and is type O, what is the probability that their next child will be female who has normal vision and is type O? As with all questions, please show all working.

2007-08-06 18:14:16 · 1 answers · asked by soshsiao 2 in Biology

2007-08-06 18:10:39 · 5 answers · asked by Anonymous in Chemistry

casimir force acts opposite to quantom force which causes friction.

2007-08-06 18:10:14 · 4 answers · asked by jake 1 in Physics

2007-08-06 18:07:26 · 3 answers · asked by Anonymous in Chemistry

How to create non-permanent join between two parts made of wood ?You can imagine your remote control battery place which is closed by a part that can be removed and put in place easily.However remote control is made by plastic.I want to create same scenario but with wood.Any idea to design the structure is really appreciated.It means two parts can be locked into place and can be removed easily whenever we like to get access to battery and switch inside.

2007-08-06 18:07:06 · 4 answers · asked by Ikmal 1 in Engineering

2007-08-06 18:05:47 · 3 answers · asked by Anonymous in Chemistry

2007-08-06 18:05:12 · 7 answers · asked by annie tt 1 in Biology