Science & Mathematics - 2 September 2007

Been to the moon - done that

2007-09-02 14:40:14 · 17 answers · asked by Anonymous in Astronomy & Space

2007-09-02 14:38:17 · 8 answers · asked by toshiba_rs 1 in Medicine

2007-09-02 14:37:50 · 4 answers · asked by Emmanuel A 2 in Other - Alternative

the end points of the diameter are at -4,-1 and 0,-4 anyone know how to find the equation of the circle or at least find the center and radius?

2007-09-02 14:36:25 · 6 answers · asked by Anonymous in Mathematics

the rubber worn from tires mostly enter atmosphre as pollution. Estimate how much rubber (kg) is put into the air in US every year. An estimate for a tire tread's depth is 1 cm when new and the density of rubber is about 1200 kg/m^3

2007-09-02 14:35:24 · 1 answers · asked by Anonymous in Physics

Is it consistent with Newton's second law?

2007-09-02 14:32:52 · 6 answers · asked by kntagler 1 in Physics

moving with constant velocity , that is 19 m from the point of impact when the key is released. What is the speed of the boat?

2007-09-02 14:28:46 · 3 answers · asked by Saber 1 in Physics

Can one ascertain a mathematical understanding of the optical illusion of how the moon and stars become larger closer to the horizon...

although...it is considered to be an optical illusion...one is able to see the constellations easier and closer to the horizon.

one would think that directly overhead...that the constellations seen should be the denominator
...not an earthly reference point...to "base magnification" by...

2007-09-02 14:28:14 · 3 answers · asked by Sopwith 4 in Astronomy & Space

2007-09-02 14:25:52 · 7 answers · asked by Shane S 1 in Mathematics

2007-09-02 14:21:03 · 4 answers · asked by Emmanuel A 2 in Other - Alternative

2007-09-02 14:20:35 · 5 answers · asked by bunmi 1 in Biology

now this im sure isnt what most of you think its about. if anyone watches the TV series 'The Universe' on the history channel im sure they have seen the comercial for the last episode, which is about the big bang.

in this comercial it says that in 3 minutes 98% of everything ways created, now i was under the impression that 100% of everything was created at the same time in the giant explosion, it might have took more time for some energy to cool into matter, but it was still there.

so can someone explain to me wtf they are talking about, cuz im pretty sure theyre wrong.

2007-09-02 14:20:01 · 9 answers · asked by Anonymous in Astronomy & Space

is 125 meters/second due east relative to the ground, what is the velocity of the plane being refueled relative to the
A) ground, and
B) refueling aircraft.

Correct me if I'm wrong:
The plane must have the same velocity as the refueling aircraft relative to the ground (and to the refueling aircraft itself) to keep up with it and continue going in the same direction.

2007-09-02 14:18:49 · 2 answers · asked by Diff 1 in Physics

We learned this in class friday morning, and now, sunday night, I totaly forgot it.

How do i find f of g?

For example, my problem (one of many) is

f(x)=2x g(x)= 3x^2 + 1

fog(4) = ?


Thankyou in advance.

2007-09-02 14:18:20 · 1 answers · asked by moneyman 1 in Mathematics

"Q: Find the equation of the line parallel to the line 3x+7y+42=0 and four units above it." What does "four units above it" mean? Also a similar question has "three units from it" What does it mean? I know how to solve such problems but I am stuck with this linguistic problem.

2007-09-02 14:17:24 · 3 answers · asked by Legend 3 in Mathematics

I have a dilemma: I've been single for the last year or so and I met the woman of my dreams. She lives on the other side of Canada, and she has a boyfriend (whom she's been with for 4 years). She flew to the city I live in to do some research and will be coming back again in 6 mo. I sent her an email stating I was attracted. She called back -- we talked for hours. I then sent an email asking what would be best for her, and best for her boyfriend. She replied, stating she told her boyfriend about having talked with me for hours and basically that her life was, well, messed up now because she keeps "settling." I emailed her again stating that her integrity and honesty were commendable, then something like "wouldn't it be nice if you could just come and live with me?" She is finishing a PhD and I don't know what the resolution for all parties concerned is. I haven't heard from her in 3 days. Any game theory experts or relationship savvy people with constructive comments on this?

2007-09-02 14:17:16 · 5 answers · asked by Aiden 4 in Mathematics

Thanks

2007-09-02 14:16:27 · 7 answers · asked by Anonymous in Astronomy & Space

A flat circle of radius 18 cm is placed in a uniform electric field of magnitude 5.1x10^2 N/C.

b) What is the electric flux through the circle when its face is at 40° to the field lines?

Equation:
=EA cos ()
E=5.1x10^2
A=pi x .18^2 = .102
angle=40 degrees
(5.1x10^2)(.102)(cos 40)
=39.84
Yet it is wrong. What am I doing wrong?

2007-09-02 14:15:17 · 2 answers · asked by Jessie L 2 in Physics

2007-09-02 14:14:51 · 17 answers · asked by Anonymous in Astronomy & Space

Somewhere in the USA there is a place where you can stand in 4 or 5 states I was wondering where at is this and what states?

2007-09-02 14:12:08 · 15 answers · asked by Anonymous in Geography

A boy runs 30 m east , 40 m north, 50 m west. What is his net displacement? can you please explain how you did it?

2007-09-02 14:11:53 · 3 answers · asked by pinkduck000 2 in Physics

2007-09-02 14:11:28 · 2 answers · asked by chris o 2 in Zoology

I'm not sure how to work sine, cosine, and tangent problems that have minutes (eg. 10' from the above question). Help would be much appreciated. Thanks.

2007-09-02 14:11:23 · 2 answers · asked by Lovelylady 3 1 in Mathematics

2007-09-02 14:08:24 · 9 answers · asked by brittsparky77 1 in Mathematics

Also explain itspossible advantages and disadvantages.

2007-09-02 14:06:02 · 4 answers · asked by suryakala n 1 in Engineering

2007-09-02 14:01:32 · 3 answers · asked by yung one 1 in Mathematics

The transmission in Bob's truck hold 11 quarts of fluid. If Bob changes 5 quarts at a time, and allows the fluid to homogenize- what percent is old fluid and what percent is new fluid if he does this 4 times.

What would be the equation to use so you can graph this on a TI-83?

2007-09-02 13:59:46 · 2 answers · asked by schwartr88 3 in Mathematics

or Raiz

2007-09-02 13:53:48 · 3 answers · asked by Lindsay F 1 in Geography

I keep hearing that there is a huge black hole with no stars etc. should i be scared of it?

2007-09-02 13:50:20 · 7 answers · asked by Anonymous in Astronomy & Space

What is a critical issue or problem faced by architects and/ or the field of architecture?

2007-09-02 13:45:27 · 6 answers · asked by - 2 in Engineering