Science & Mathematics - 19 July 2007

some ppl say we didnt set foot on the moon didnt really believe it but then i saw this picture of Neil armstrong on the noon and on his helmet one of the pic has a reflection of 3 ppl and the other 2 and there was only 3 ppl went to the moon includign him and also the flag is waving its impossible coz thers no air on the moon any ideas

2007-07-19 16:49:52 · 12 answers · asked by Anonymous in Astronomy & Space

2007-07-19 16:48:54 · 6 answers · asked by jorsie40 1 in Earth Sciences & Geology

From a window 9 meters from the ground, the angles of epression of the top and bottom of a lamp post are 30 degrees and 60 degrees, respectively.Find the height of the lamp post

2007-07-19 16:47:06 · 3 answers · asked by ckorski 1 in Mathematics

can a woman have in her life time?

2007-07-19 16:45:59 · 3 answers · asked by Anonymous in Medicine

Why is time the 4th dimension of space? Why not something else? What led physicists to conclude time is the 4th dimension?

What is it we can move on in one direction in time, ie, forward? If we can move freely in the 3 dimension, why is it we can move only forward in time?

2007-07-19 16:45:50 · 5 answers · asked by Sleuth! 3 in Physics

I was talking to my friend on the phone earlier, and she played a recording of our friend singing that she had recorded with her cell phone earlier that week. However, I could not hear any trace of the recording. Also, her phone was running low on battery, and it began to beep incessantly, and this I could not hear either. Then, I realized that if I were able to hear the sound produced by my friend's phone, I would also be able to hear my voice resonating around her kitchen, because I was on speaker-phone at that point. Why couldn't I hear the sounds being produced by the cell phone with which mine own was corresponding?

2007-07-19 16:44:49 · 1 answers · asked by Ellen H 1 in Physics

If you don't, wouldnt it be sec2xtan2x?

But if you do, and its in a problem where u already used the chain rule, you do the chain rule again?

ex.) (sec2x)/(1+tan2x)

2007-07-19 16:44:26 · 8 answers · asked by Anonymous in Mathematics

A tanker ship is filled with 2.25 x 10^5 m^3 of gasoline at a refinery in southern Texas when the temperature is 17.2 degrees C. When the ship arrives in New York City, the temperature is 1.3 degrees C. The coefficient of volumetric expansion for gasoline is 9.50 x 10^-4/C degrees.

2007-07-19 16:44:25 · 2 answers · asked by Anonymous in Physics

examples pf the two laws of thermodynamics in terms of some common everyday events

2007-07-19 16:41:14 · 4 answers · asked by Anonymous in Earth Sciences & Geology

closest to the origin, what is the value of x0?

2007-07-19 16:39:50 · 2 answers · asked by biomes 1 in Mathematics

I want to learn how to.

2007-07-19 16:39:02 · 2 answers · asked by Anonymous in Other - Science

Using the rules of exponents simplify the expression

6a(-ab^-2)/-2a^2 b^-3

2007-07-19 16:37:26 · 2 answers · asked by Kristin R 2 in Mathematics

2007-07-19 16:36:38 · 4 answers · asked by hcl404 3 in Astronomy & Space

In the underground caves, where there is permanent darkness, a variety of organism exist. In terms of energy flow, how can this be possible?

2007-07-19 16:34:19 · 3 answers · asked by Anonymous in Earth Sciences & Geology

A slot machine at a casino pays out an average of $0.90, with a standard deviation of $120. It costs a dollar to play. If gamblers play this machine 5,760,000 times in a month, what is the probability that the casino will come out ahead? Assume that the casino's total profit follows a Normal model.


a. 0.036

b. 0.964

c. 0.977

d. 0.933

e. 0.023

2007-07-19 16:33:32 · 1 answers · asked by publix_589 2 in Mathematics

I found this big blue mushroom and I would like to know what kind it is?

2007-07-19 16:32:28 · 1 answers · asked by Valerie 1 in Botany

I just graduated from High School and I have always been fascinated with animals. I was just wondering if there are certain kind of classes that you need to take and if so what are they and Is there a type of College that I have to attend to, to become a Zoologist?

2007-07-19 16:31:28 · 5 answers · asked by Sarah c 1 in Zoology

dont complain!
a.
Find a number to complete the following pattern:

0,3,14,39,?

b.
Find the operations that make each sentence true
8?8?8?8= 256
8?8?8?8=120

2007-07-19 16:23:21 · 7 answers · asked by Anonymous in Mathematics

Right now, I am taking algebra three (a continuation of algebra two for my school) I originally signed up for trig, but my school put me in statistics. I was wondering if that class is supposed to be the class I should be in, or if I should switch. If I should switch, should I switch to pre calculus or trigonmetry and why?

2007-07-19 16:20:01 · 3 answers · asked by doll 2 in Mathematics

???

2007-07-19 16:16:25 · 3 answers · asked by mrhirschibar 1 in Mathematics

A middle-aged man typically has poorer hearing than a middle-aged woman. In one case a woman can just begin to hear a musical tone, while a man can just begin to hear the tone only when its intensity level is increased by 5.5 dB relative to that for the woman.

2007-07-19 16:15:20 · 1 answers · asked by adrianterrellhogan 1 in Physics

its a vitamin C with "rose hips"also, when im taking the vitamin C should i take the "broewn pills" with it?? is the brown looking pills the "rose hips"?

2007-07-19 16:12:42 · 1 answers · asked by Ask ME 3 in Medicine

A wave has the following properties:amplitude=0.575 m, period=0.730 s, wave speed=14.4 m/s. The wave is traveling in the -x direction.

2007-07-19 16:10:13 · 2 answers · asked by adrianterrellhogan 1 in Physics

2007-07-19 16:09:33 · 6 answers · asked by Tito 1 in Chemistry

I've tried to google this and have got no where. Its for a quiz so any quick replies or ideas of where i may find the answers would be great!

2007-07-19 16:08:48 · 5 answers · asked by sarahlouu13 3 in Earth Sciences & Geology

?????

2007-07-19 16:05:59 · 5 answers · asked by mrhirschibar 1 in Mathematics

2007-07-19 16:03:48 · 5 answers · asked by Adam M 2 in Physics

plz tell me

2007-07-19 16:03:41 · 3 answers · asked by Anonymous in Botany

The figure below shaded in gray is that of a trapezoid having base length a and slant height b.

http://i181.photobucket.com/albums/x85/ctti_3/untitled-28.jpg

2007-07-19 16:00:14 · 2 answers · asked by sdt3 1 in Mathematics

I have this problem that i cannot figure out. Rubidium has a stable isotope with 48 neutrons and a mass number of 85. Rubidium also has an unstable isotope with 49 neutrons and a mass number of 86. The stable isotope has a relative abundance of 72.17% and an atomic mass of 84.9117 amu. What is the atomic mass of the unstable isotope?

could someone show me how to work this out...i tried two different ways to solve it, but i got two completely different answers, so i really don't know what to do now! Thanks!!!

2007-07-19 15:57:45 · 1 answers · asked by Anonymous in Chemistry