Science & Mathematics - 18 November 2007

will the members of the public like me be able to have a trip into space in the future , for a big price?

thanks

2007-11-18 23:57:54 · 20 answers · asked by Anonymous in Astronomy & Space

The answer to this trivia question is a theme. To discover what the theme is, you will be given a series of words.
here are the words,(everything i try to come up with didnt work)
new....struck....blue....man....silver....satellite....wane...sky...round....night...crescent....lunar

2007-11-18 23:56:48 · 18 answers · asked by ayummybia 2 in Astronomy & Space

The equilibrium constant for the Haber reaction is 3.82 x 10-5 atm-2 at a certain temperature. If a reaction starts with 2.70 atm of H2 and 5.40 atm of N2 at this temperature, what will be the equilibrium pressure of NH3? Enter in atmospheres.


please explain - thank you

2007-11-18 23:54:41 · 1 answers · asked by guywithalotoflifeexperience 1 in Chemistry

why in acid solution gold is not corroded??
why in acid solution iron is hardly corroded??

2007-11-18 23:50:18 · 2 answers · asked by isa m 1 in Engineering

I've been wondering, when in a car you measure speed on a speedometer based on the rotation of the wheels. In an airplane you measure airspeed relative to the air. But in space, where there is no road and no air (or pressure) how do you measure your speed? If it's the case where you measure it against a near object, what if there are no nearby objects?

2007-11-18 23:49:27 · 3 answers · asked by Anonymous in Astronomy & Space

The parallel axis theorem provides a useful way to calculate the moment of inertia I about an arbitrary axis. The theorem states that I = Icm + Mh2, where Icm is the moment of inertia of the object relative to an axis that passes through the center of mass and is parallel to the axis of interest, M is the total mass of the object, and h is the perpendicular distance between the two axes. Use this theorem and information to determine the moment of inertia (kg·m2) of a solid cylinder of mass M = 5.40 kg and radius R = 8.10 m relative to an axis that lies on the surface of the cylinder and is perpendicular to the circular ends.

2007-11-18 23:42:15 · 1 answers · asked by mjamen 1 in Physics

Does anybody know of any good websites for identifying British insects?

2007-11-18 23:41:25 · 4 answers · asked by Anonymous in Zoology

The battery is maintenance free sealed battery.What i need to know is the number of units that shall be consumed to charge a battery of say 7 AH

2007-11-18 23:33:40 · 1 answers · asked by viveksanghi 1 in Engineering

7. Given the following equations and DHo values, determine the heat of reaction (kJ) at 298 K for the reaction:

PCl3(g) + Cl2(g) à PCl5(g)

2 P(s) + 3 Cl2(g) à 2 PCl3(g) DHo/kJ = -542
2 P(s) + 5 Cl2(g) à 2 PCl5(g) DHo/kJ = -764



8. 4.90g of of ammonium iron (II)sulfate hexahydrate, FeSO4(NH4)2SO4*6H2O, was dissolved in 200.mL of acidified water. 20.0mL of the solution reacted completely with 12.6mL of potassium manganate (VII) (KMnO4) solution according to the balanced equation below. Calculate the concentration of the potassium manganate (VII) solution

5Fe2+ + MnO4- + 8H+ à 5Fe3+ + Mn2+ + 4H2O

2007-11-18 23:33:21 · 2 answers · asked by stylinpat 2 in Chemistry

2007-11-18 23:29:33 · 2 answers · asked by youngmoigle 5 in Mathematics

If the solid plane parallel to and 6 inches from the base of the pyramid makes a section with an area 18.5 square inches. Find the altitude of the pyramid.

2007-11-18 23:16:25 · 2 answers · asked by exilimo 1 in Mathematics

what is observed when sodium chlorate (v) is added to acidified potassium iodide?

ive looked and cant find it anywhere! please help

2007-11-18 23:09:00 · 1 answers · asked by Jess-Ica 1 in Chemistry

2007-11-18 23:06:38 · 4 answers · asked by Anonymous in Chemistry

4x-y²=-1
x-y=5

2007-11-18 23:05:52 · 10 answers · asked by Wasif 2 in Mathematics

The carbon dioxide from the combustion of 1.50 grams of C2H6 is collected over water at 25 degrees Celsius. The pressure of CO2 in the collection flask is 746 mm Hg, and the colume is 2.00 L.

2007-11-18 23:00:55 · 1 answers · asked by georgie0515 1 in Chemistry

A gas mixture contains twice as many moles of O2 than N2. Addition fo 0.200 mol of argon to this mixture increases the pressure from 0.800 atm to 1.10 atm.

2007-11-18 22:56:00 · 1 answers · asked by georgie0515 1 in Chemistry

Is ECM good in Srinidhi college of Engineering and Technology?( SNIST)

2007-11-18 22:54:22 · 1 answers · asked by Sujatha 1 in Engineering

Dr. checking for cancer in the middle of my chest. What does the petscan entail

2007-11-18 22:44:43 · 1 answers · asked by kay228 1 in Medicine

2007-11-18 22:38:50 · 4 answers · asked by shawn y 1 in Astronomy & Space

2007-11-18 22:33:55 · 4 answers · asked by Anonymous in Chemistry

There are colourless solution of some salt in four separate test tubes. We plunge a piece of copper plate in each of the test tubes. Suppose the following salts were in the test tubes. Which solution will change to form a blue solution?

a) NaCl b) AgNO3 c) Cd(NO3)2 d) ZnSO4

2007-11-18 22:33:34 · 2 answers · asked by Anonymous in Chemistry

What is the difference between the Group A metals from the Transition metal?

2007-11-18 22:23:51 · 2 answers · asked by *+=trouble maker=+* 3 in Chemistry

2007-11-18 22:03:52 · 16 answers · asked by ? 4 in Astronomy & Space

2007-11-18 21:58:55 · 2 answers · asked by toddinav 1 in Mathematics

An eye must be perfect to function.

It cannot function by gaining parts overs 100's or 1000's of years.

How is it possible for an eye to evolve and if a species can go for 100's or 1000's of years without functioning eyes.. Why?

2007-11-18 21:52:19 · 7 answers · asked by Mitch M 2 in Biology

This is for my science fair project, have no idea why that happened, but the balls at 0 consistently went the farthest. Any explanations?

2007-11-18 21:51:58 · 3 answers · asked by Anonymous in Physics

2007-11-18 21:47:34 · 4 answers · asked by toddinav 1 in Mathematics

In the arrangement of the figure, a string, tied to a sinusoidal oscillator at P and running over a support at Q, is stretched by a block of mass m. The separation L between P and Q is 1.19 m, and the frequency f of the oscillator is fixed at 119 Hz. The amplitude of the motion at P is small enough for that point to be considered a node. A node also exists at Q. A standing wave appears when the mass of the hanging block is 286 g or 447 g, but not for any intermediate mass. What is the linear density μ of the string?

2007-11-18 21:47:33 · 1 answers · asked by Anonymous in Physics

i am studying for a test and cant figure out this question:
if y=(2x-1)^4, prove:
d/dx (y* dy/dx) = y * (d^2*y) / dx^2 + (dy/ddx)^2

hope that makes sense
thanks in advance

2007-11-18 21:26:39 · 5 answers · asked by Anonymous in Mathematics

2007-11-18 21:24:13 · 6 answers · asked by Kevin John Mercado 1 in Biology