Science & Mathematics - 18 December 2006

2006-12-18 11:37:04 · 4 answers · asked by Anonymous in Physics

The railroad car has a mass of 13,500 kg. It travels alone on a level frictionless track with a constant speed of 17.0 m/s. A 5,500 kg additional load is dropped onto the car. What is the car's new speed???

Can't get the answer... please help ASAP. Thanks!!!

2006-12-18 11:36:30 · 2 answers · asked by abc123 1 in Physics

is [cold=sin(o)] the imaginary form of real [heat=cos(o)]? and is this cold the essence of the vacuum of space? if so, it seems that the "big bang" theory began not with a singularity expanding yet with an infinite "cold disintegration" ever inward ... subjectively, that the background radiation is a doppler red shift leaving this universe for a point singularity that is the anti-matter infinity? has this been theorized much less proven or disproven? would then creation be self-activating...being the presence of the infinite vacuum of imaginary cold space a single object with no real reference disintegrating ever inward creating thermodynamic differences?

2006-12-18 11:35:24 · 2 answers · asked by stevenos_2005 2 in Physics

Automobiles arrive at the Elkhart exit of the Indiana Toll Road at the rate of two per minute. The distributions of the arrivals approximates a Poisson distribution.

A) What is the probability that no automobiles arrive in a particular minute?

B) What is the probability that at least one automobile arrives during a particular minute?

2006-12-18 11:34:48 · 3 answers · asked by milkchocolatey69 1 in Mathematics

2006-12-18 11:34:10 · 10 answers · asked by Anonymous in Astronomy & Space

2006-12-18 11:33:55 · 4 answers · asked by Gordon J 1 in Geography

?? thanx

2006-12-18 11:33:25 · 10 answers · asked by Anonymous in Mathematics

and also their direction of opening?

y = x^2 - 2x - 5

y = -3^2 + 24x

y = x^2 - 6


please help

2006-12-18 11:31:49 · 4 answers · asked by lshaw1990 1 in Mathematics

what did the bugs eat before the humans invaded thier planet?

2006-12-18 11:31:33 · 8 answers · asked by Anonymous in Astronomy & Space

just from the photos they take for telescopes?

2006-12-18 11:30:38 · 6 answers · asked by Matthew A 2 in Astronomy & Space

Science project.

Ha,ha. Don't you love Christmas?

2006-12-18 11:30:28 · 4 answers · asked by kerlexis 1 in Chemistry

i have alot of question and if i post them it is going to take for ever please for the people who can help me please let me talk to u now thankx

2006-12-18 11:29:56 · 16 answers · asked by what ever ? 2 in Mathematics

2006-12-18 11:29:02 · 3 answers · asked by J.Sw W 2 in Chemistry

What is the most stable load bearing structural design for say a bunker built 100 ft below the earth that can support the weight coming down on it? What would be the most efficient way to distribute that weight? Also include the shape of the room if it comes into play.

2006-12-18 11:28:09 · 6 answers · asked by Tryptch 2 in Engineering

2006-12-18 11:26:55 · 11 answers · asked by Anonymous in Earth Sciences & Geology

just curious about other areas of Oregon...other than the capital!

2006-12-18 11:25:54 · 5 answers · asked by karen h 3 in Weather

Which of the following are true statements about proteins ?
[Note-- there can be more than one answer]


a) The shape and function of a protein is determined only by the different types of amino acids
that make up the chain.
The order they appear in is not a factor


b) The sequence of amino acids that make up a protein are known as the primary structure of the protein


c) Although proteins are long and complex, they have a regular structure that results from hydrogen bondng


d) The tertiary structure of a single protein molecule is created by hydrogen bonds between
an amine group and a lone pair of electrons on an oxygen molecule


e) One type of tertiary structure found in proteins is α-helix


f) The structrure of a protein that results from only hydrogen bonding between the side
chains of the different amino acids is called the tertiary structure

2006-12-18 11:24:25 · 3 answers · asked by nietzsche 1 in Chemistry

need help does someone know

2006-12-18 11:24:16 · 2 answers · asked by Austin K 1 in Geography

2006-12-18 11:23:09 · 5 answers · asked by Anonymous in Astronomy & Space

F.e. Atoms that have an electorn added (- ion) are called anions. Whats the name for the atom that becomes positive?

2006-12-18 11:22:31 · 5 answers · asked by R B 3 in Chemistry

and which air rises, hot air or cold air??

tnx..=)

2006-12-18 11:22:17 · 13 answers · asked by jen R. 2 in Chemistry

in which stage are most of the bodily organs differentiated?
embronic, fetal, ovum, or germinal?

2006-12-18 11:22:15 · 2 answers · asked by Rachel K 1 in Biology

Francis Crick very genorously offers his and Watson's model to Dr. Wilkins. What could have happened to Crick & Watson if Dr. Wilkins had accepted? Why is this an unusually genorous offer?

Hey everyone! I really don't understand this question..I mean, I understand it but have NO idea what the answer is..I even borrowed a couple of movies and watched them over the weekend but couldn't find a single fact that had to do with this question...Can anyone help me out? Please? Thank you guys so muchhh! Happy Holidays! && an early goodnight to all of you!

2006-12-18 11:22:01 · 4 answers · asked by Lina 4 in Biology

2006-12-18 11:21:33 · 24 answers · asked by littleone24t 1 in Astronomy & Space

The equations are x + y = 13 and 22x + 36y = 356. I came up with the following answers y= -46 and x= 59 well for the second equation -46 does not work. Please help and show work so I can see where I messed up at.

Thanks again, this is so cool that I can ask people for help and get great results!

2006-12-18 11:21:07 · 6 answers · asked by 2good4hem 3 in Mathematics

simplify and leave in radical form. cube root of 5^2.7 divided by the cube root of 5^4.5

2006-12-18 11:20:06 · 7 answers · asked by teef 1 in Mathematics

2006-12-18 11:19:08 · 2 answers · asked by Anonymous in Chemistry

Thanks!

2006-12-18 11:17:34 · 4 answers · asked by Anonymous in Mathematics

2006-12-18 11:16:11 · 2 answers · asked by THE ALMOST 3 in Biology

2006-12-18 11:10:39 · 16 answers · asked by ulu2011 2 in Zoology