Science & Mathematics - 27 August 2007

2007-08-27 23:44:16 · 4 answers · asked by S4NJUUSHiCHi 2 in Astronomy & Space

2007-08-27 23:41:33 · 5 answers · asked by medo 1 in Physics

Explain why extremely long curing times are required for rubber mixes containing sulphur only.

How can i describe the way in which cure times can be reduced to within the time scales used for normal production runs.

2007-08-27 23:35:53 · 2 answers · asked by Anonymous in Engineering

In 6 minutes time I will be able to see the full lunar eclipse.
I am in Sydney Australia and it is a cloudless night.

Can you see the lunar eclipse as well where you are?

2007-08-27 23:30:26 · 6 answers · asked by DY Beach 6 in Astronomy & Space

I heard someone say that we can't watch it..
I dont really remember how it is.. are we actually allowed to see it
cause I hear some people dont see it because it may hurts your eyes or something.
Is there any ways you guys can tell me?
Thanks!!

2007-08-27 23:29:41 · 4 answers · asked by Cassandra S. 6 in Astronomy & Space

Hi, I am here in the Philippines at Mindanao I know there is, but I can't see the eclipse! Would the clouds clear up after a few minutes cause it's blocking my first time seeing a lunar eclipse!huhuhu!

2007-08-27 23:27:31 · 7 answers · asked by Anonymous in Astronomy & Space

in central Wy.when would i see the next solar eclipse??? thank you!!!

2007-08-27 23:24:39 · 5 answers · asked by peanut m 1 in Astronomy & Space

I read about the lunar eclipse on August 28th, and want to understand how come I was unable to see it. I live in Quebec, in the EDT time zone, and NASA's website indicated the lunar eclipse would be visible as of 5:52 a.m. I got up to view it and saw nothing. So I checked another website to see the time of moonset on August 27th, 2007, and it indicated 4:49 a.m. It seems there is a discrepancy between the two sites I consulted. Can someone explain this?

2007-08-27 23:22:41 · 8 answers · asked by Iwannaknow 1 in Astronomy & Space

two objects A and B of respectiv masses Ma = 8 kg, Mb = 2kg
are travelling towards each other along the x-axis with
velocities ua = 40 ms^-1 and ub = 5 ms^-1, when they collide
and coalesce into a single object

After the collision the combined object moves along the x-axis
How much energy is lost in the collision?

2007-08-27 23:21:43 · 3 answers · asked by   4 in Physics

Earier onight the moon was at three quarter phase, now it is almost full again , but reddish . Only the moon, Why?

2007-08-27 23:21:13 · 7 answers · asked by Alan G 3 in Astronomy & Space

2007-08-27 23:19:53 · 4 answers · asked by Bhaskar 4 in Mathematics

im doing a powerpoint presentation 4 science on earthquakes and i need a kinda sadish song, not to screemo more like matchbox 20 and meetloaf style but any song iz good

2007-08-27 23:16:15 · 4 answers · asked by Anonymous in Earth Sciences & Geology

2007-08-27 23:14:49 · 1 answers · asked by strange-artist 7 in Astronomy & Space

The eclipse was cool and freaky.

2007-08-27 23:08:50 · 8 answers · asked by kwest 4 in Astronomy & Space

(x^2/3 - 4x + 12 - 20) dx


thanks!!

2007-08-27 23:04:53 · 3 answers · asked by DramaQueen22 3 in Mathematics

"A car radiator contains 10 liters of a 30% antifreeze solution. How many liters will have to be replaced with pure antifreeze if the resulting solution is to be 50% antifreeze?"

I am completely lost on this one, and any help would be appreciated. If you can only give me the formulas/equations, that would be great too (: Thanks!

2007-08-27 22:52:46 · 7 answers · asked by alwaysconfused 2 in Mathematics

Challenge Problem #3: Damped Periodic Motion
If there is no friction in the setup shown below, the block, once it is released, will oscillate
forever between the two springs. Its motion could be described as simple periodic or
simple harmonic motion.
If there is friction, however, mechanical energy will gradually be lost to heat and the
oscillations will get smaller and smaller until eventually the block comes to rest. In this
case the motion would be called damped periodic motion. If the oscillations die out very
rapidly (for example, over only a few oscillations) we would call it heavily damped
periodic motion.
Given the values shown below, determine where the point P (mid-point of block) will be
with respect to the mid-point of the table when the oscillations die out and the block comes
to rest. Assume both springs are identical.
Spring constant: 152 N/m
Mass of block: 0.785 kg
Width of block: 6.00 cm
Coefficient of kinetic (and static) friction: 0.084
Mid-point of table
17.8 cm
Mid-point of table
12.0 cm
Block ready to be released
Both springs in rest positions
Left spring compressed;
P
17.8 cm

2007-08-27 22:48:24 · 2 answers · asked by yusuke_kousuke 2 in Physics

Kind of neat...clear sky where I'm at. Amazing to see how brightly the moon WAS lighting the surroundings...now, so dark!

2007-08-27 22:41:17 · 6 answers · asked by Anonymous in Astronomy & Space

Nitrogen--- -196 Degree Celsius

Argon--- -186 Degree Celsius

Oxygen--- -183 Degree Celsius


A mixture of oxygen, nitrogen and argon at -200 Degree Celsius is allowed to warm up grudually by 16 Degree Celsius. Which of the substances will still be in the liquid state?


The answer is oxygen only.

But why is oxygen only? I don't understand...Can anyone explain this question to me? Thanks a lot. =)

2007-08-27 22:36:42 · 3 answers · asked by ♪£yricảl♪ 4 in Chemistry

when you have 3 systems.. for ex
x + 2y +3z =5
2x - y + 2z = 7
3x - 3y + 2z = 10

ok and they say "find the coordinates of the point of intersection of the planes"

that just means you have to solve for x y z right ? and each value is a coordinate of intersection ? right? im not sure.

so if im right. and lets say X was = to 2, then one coordinate would be {2, 0, 0} right? i dont know

thanks

2007-08-27 22:33:58 · 2 answers · asked by john doe 2 in Mathematics

2007-08-27 22:26:52 · 2 answers · asked by Anonymous in Astronomy & Space

2007-08-27 22:14:47 · 2 answers · asked by Paolord 1 in Astronomy & Space

2007-08-27 22:09:35 · 16 answers · asked by Anonymous in Astronomy & Space

2007-08-27 22:09:17 · 4 answers · asked by Paolord 1 in Astronomy & Space

2007-08-27 22:00:53 · 13 answers · asked by strange-artist 7 in Astronomy & Space

2007-08-27 21:55:44 · 7 answers · asked by eastaweng 1 in Mathematics

Greyhound Bus Company has 150 buses in their garage.
124 has backdoors, 120 has tinted windows, and 127 has toilets. 111 has backdoorss and tinted windows, 110 has toilets and tinted windows, 14 has all three, and 15 has neither.

2007-08-27 21:51:52 · 4 answers · asked by Anonymous in Mathematics

2007-08-27 21:46:56 · 1 answers · asked by pete the pirate 5 in Astronomy & Space

2007-08-27 21:28:03 · 5 answers · asked by 2007babygirl94 1 in Earth Sciences & Geology

"A 2 digit number has its 'tens' number 5 more than 2 times the 'ones/units' number. The number is 1 less than 9 times the sum of it its digits.
Write an equation for this and solve it"

This was a question from one of my maths tests. I was so lost. Can anyone help?

2007-08-27 21:16:19 · 5 answers · asked by Anonymous in Mathematics