Science & Mathematics - 18 September 2007

help me with this

2007-09-18 05:21:23 · 8 answers · asked by Lisa 1 in Mathematics

2007-09-18 05:19:51 · 4 answers · asked by Stephanie S 2 in Geography

Have you ever seen the Earth move? Have you ever seen the Sun move?
If so, how?

2007-09-18 05:18:36 · 8 answers · asked by Anonymous in Astronomy & Space

There was 11 rainy day. When in the morning it rained, afternoon didn't and when afternoon rained in the morning didn't. There was 9 sunny morning and 12 sunny afternoon. How many sunny day were?

2007-09-18 05:17:21 · 1 answers · asked by Agnes K 3 in Mathematics

It's starting to get cold around here and we have been getting lots of thick fog, anyway i was awake around 3:30 am and i had just logged off yahoo answers and i tried to lay down but i couldn't sleep so i figured a walk would make me tired, so i went down the the local part and sat down by the river and was tossing rocks into the water, after about 20 minutes i got bored and walked all the way around the park and started to head back home and thats when i kind of seen something strange, remember it was foggy outside, i was on the path leading to the back alley and i seen a black shadowy figure pass by me but it would disappear into the fog when i would swing my hunting knife at it, it kept moving past me always out of my reach, it felt like this was going on for 20 minutes but when i looked at my watch only 4 minutes had passed, what ever it was it wasn't human because no sane person would try and freak out some dude swinging a knife around in the fog.

2007-09-18 05:17:03 · 18 answers · asked by Anonymous in Paranormal Phenomena

I've read it in a magazine but can't figure it out.

2007-09-18 05:13:14 · 5 answers · asked by dragon88 2 in Chemistry

2007-09-18 05:12:45 · 1 answers · asked by shelly 1 in Zoology

can u get it at 15 and can u get it if no one in ur family carries the gene if so how likely

2007-09-18 05:12:07 · 2 answers · asked by Est.1992 6 in Medicine

2007-09-18 05:12:04 · 3 answers · asked by shelly 1 in Zoology

How do you find the Average Rate of Change (ARC) of an equation, let's say:
Given f1(x)=-3x^2+12x+3, on x-range:[-1...5] and y-range: [-10...18]...
What is the ARC? Please help I have a test over this Friday!

2007-09-18 05:11:59 · 2 answers · asked by Jet 2 in Mathematics

(1/x^2-3x) - (x-1)/(x^2-9)

2007-09-18 05:11:18 · 2 answers · asked by o d 1 in Mathematics

Andromeda:

http://starchild.gsfc.nasa.gov/Images/StarChild/universe_level2/andromeda_big.gif

We are on a collison course.

I imagine the Milky Way will come off the better of the two as it is more massy, and we will shread through Andromeda perhaps leaving in our wake something like the Tadpole galaxy:

http://imgsrc.hubblesite.org/hu/db/2002/11/images/e/formats/web.jpg

I am interested in your thoughts.

Also: how common are galaxy collisions?

2007-09-18 05:09:27 · 14 answers · asked by Golgi Apparatus 6 in Astronomy & Space

i'm having some problem understanding this concept, i dont like posting my assignments on here but i need help desperately.

summation n= 2 to infinity (SQRT n/ n-1). determine whether the series is convergent or divergent.

2007-09-18 05:09:14 · 1 answers · asked by Anonymous in Mathematics

i know one side of the triangle is 84.05

2007-09-18 05:05:40 · 3 answers · asked by mike d 1 in Physics

what are lissajous figures?what are their use?
Show that the resultant of two shms of the same period but different amplitudes and phases is an elliptical motion.For what condition will the path of the resultant motin be a circle and a straight line.....?

2007-09-18 05:05:19 · 3 answers · asked by goerge 1 in Engineering

2007-09-18 05:03:48 · 9 answers · asked by JAMES 4 in Physics

Two football players start 37m apart. One football player goes from rest (0m/s) and accelerates at 5m/s^2 towards the other player. The other player maintains a constant velocity of 3.1m/s towards the first player.

How long will it take for both players to meet each other and how far will have each player travelled?

Please explain in detail and show the steps.

2007-09-18 04:57:58 · 1 answers · asked by khoa n 1 in Physics

wat is root mean square velocity explain it

2007-09-18 04:34:58 · 3 answers · asked by karthikeyan v 2 in Physics

A tractor sits on a bridge supported by two posts A and B. THe back wheel exerts a force of 14.000N and the front 6,000N. Calculate the force on each support.

distance from A to back= 5m
distance from BAck to Front= 3m
Distance between A and B= 15m

2007-09-18 04:32:42 · 1 answers · asked by Anonymous in Physics

I'm not convinced with the answers - because why do I get the largest half of the drinks round and the smallest half of the treacle tart ? Am I still being (I've forgotten how to spell pedantic) obstruse?

2007-09-18 04:31:41 · 17 answers · asked by donjamste 1 in Mathematics

need to findthe sum of the series

2007-09-18 04:27:47 · 2 answers · asked by thomsandy 1 in Mathematics

2007-09-18 04:27:09 · 6 answers · asked by Anonymous in Astronomy & Space

2007-09-18 04:26:45 · 44 answers · asked by Debbie P 1 in Mathematics

2007-09-18 04:20:20 · 4 answers · asked by John D 2 in Chemistry

2007-09-18 04:18:44 · 3 answers · asked by Antares 6 in Biology

2007-09-18 04:18:01 · 2 answers · asked by Anonymous in Engineering

a cylinder is inscribed inside a sphere with radius R. let x=height of cylinder. write a formila for the volume of the cylinder as a function of x and that includes R in some way. What is the domain of V(x) and graph V(x) when R=3

i have something like pi(4(R^2)-x^2)x/4....is this correct?
im having trouble with the domain and how to get that when we have two variables....

2007-09-18 04:14:01 · 2 answers · asked by Harmlessly Roaming 1 in Mathematics

how could we go about doing this and providing it for free?

2007-09-18 04:05:49 · 4 answers · asked by Anonymous in Physics

would it really be that astronomical? couldn't people be retrained and keep their jobs??? wouldn't this be better for the enviornment AND the economy, and SAVE money buy not building new plants?

2007-09-18 04:02:30 · 10 answers · asked by Anonymous in Physics

okay i dont know how to do the fraction ones so please help! i am being homebound so this is why im struggling. please explain your answer so i can understand thanks!

'' use elimination to solve each system of equations''

2/3x - 3y = 1/5

2x - 9y = 4

2007-09-18 03:58:42 · 3 answers · asked by Anonymous in Mathematics