Science & Mathematics - 20 December 2007

True
False

2007-12-20 02:43:09 · 5 answers · asked by Anonymous in Chemistry

The rear of a bicycle passes a point O on a road with a velocity of 4 m s-1 and an acceleration of 2 m s-2.
4 seconds later the front of a car passes O with a velocity of 2 m s-1 and an acceleration of 4 m s-2.
When and how far from O does the dront of the car meet the rear of the bicycle?

2007-12-20 02:41:13 · 3 answers · asked by Alan 2 in Physics

Just for fun those of you who are familiar with this photo what is your opinion? I have mine but will save it till I read all of y'alls.
There are many websites that have this picture but if you are not familiar with it here is just one website http://www.castleofspirits.com/brownlady.html

2007-12-20 02:39:11 · 0 answers · asked by Anonymous in Paranormal Phenomena

2007-12-20 02:34:14 · 6 answers · asked by Anonymous in Mathematics

True
False

2007-12-20 02:32:33 · 10 answers · asked by Anonymous in Astronomy & Space

I did decent on my other portion but im not 100% sure on the last one.

1) 6x^6 - 12x^4 i got 6x^4 ?

2) 27x^3 - 9x^2 + 15x i got 3x ?

3) 3(x+7) - x(x+7) im not sure on this one

2007-12-20 02:31:06 · 2 answers · asked by don 2 in Mathematics

2007-12-20 02:30:29 · 8 answers · asked by codrock 6 in Mathematics

(a) Who can I see in regards to making my own very powerful electric magnets (It requires electrical expertise) but I cant just call a random electrician about it surely they'd think im crazy.
(b) Where could I buy industrial lifting electromagnets? (In Australia)

2007-12-20 02:30:22 · 4 answers · asked by George W 1 in Other - Science

beeswax is obtained from the remains of honeycomb after extracting honey from it.

2007-12-20 02:28:32 · 5 answers · asked by Anonymous in Chemistry

2007-12-20 02:28:32 · 25 answers · asked by thoraxe_the_lmpaler 2 in Physics

What is the converse, inverse, and contrapositive of: The sum of the angle of a triangle is 180 degrees.

2007-12-20 02:25:54 · 3 answers · asked by Anonymous in Mathematics

Please explain

2007-12-20 02:22:59 · 10 answers · asked by upkar 2 in Other - Science

Suppose f:(0, oo) --> satisfies the functional equation f(x + y) = f(xy) for every positive x and y. Show f is constant.

Thank you

2007-12-20 02:22:45 · 2 answers · asked by Liza 1 in Mathematics

come after Saturday?

2007-12-20 02:19:51 · 3 answers · asked by clavdivs 4 in Mathematics

2007-12-20 02:19:26 · 21 answers · asked by thoraxe_the_lmpaler 2 in Biology

2007-12-20 02:18:03 · 5 answers · asked by Little Red Riding Hood 1 in Mathematics

Solve by completing the square.
1) x²-x-1=0

Use the quadratic formula to solve the following. Leave irrational roots in the simplest radical form.
3x²-4x-5=0

2007-12-20 02:17:11 · 3 answers · asked by Anonymous in Mathematics

2007-12-20 02:16:58 · 2 answers · asked by joseph m 1 in Mathematics

A student answered three questions on a 40-question test incorrectly. What percent did the student answer correctly?

2007-12-20 02:16:57 · 3 answers · asked by yummyummy 1 in Mathematics

2007-12-20 02:16:39 · 3 answers · asked by Little Red Riding Hood 1 in Mathematics

Man’s exploration into space has only brought humans physically to the surface of earth’s only natural satellite, the Moon. There have been just six landings on the moon by NASA astronauts. The first one was in 1969. What year was the last manned moon landing?

2007-12-20 02:14:06 · 7 answers · asked by Shano 4 in Astronomy & Space

Is D.N.A. our code? Do you think it is possible that we programmed?

2007-12-20 02:10:47 · 8 answers · asked by Hello World 2 in Other - Science

My bedroom was downstairs, my mother and sister’s room is upstairs. I got up for work around 6 a.m. and it was still dark. I only turn on the light in my room to iron my clothes. I’m ironing my clothes and I thought I saw something white out of the side of my eye in the hallway go into the bathroom. (The bathroom door is kitty corner to my bedroom door.) But I said no it’s just me. But I could not ignore it so I looked and saw nothing. I went to work as usual. As soon as I got home my sister called me upstairs. She was like I saw something white in the living room this morning. The hair on my arms stood straight up! While she is talking she has tears in her eyes. When I told her what happened she just said “oh sh&t, stop playing”. But how would I know if she didn’t tell me until later. Earlier that morning she had fallen asleep downstairs on the couch and was awakened by my “mother” calling her upstairs. So she said “what?” But no one was there, just a white figure

2007-12-20 02:06:39 · 11 answers · asked by tasha 3 in Paranormal Phenomena

2007-12-20 02:04:31 · 7 answers · asked by Anonymous in Mathematics

What do u think?
When I was about 8, I was playing outside by myself. It was fall afternoon in Massachusetts so there were a lot of leaves. I was playing next to a fence that separated this old house no one lived in. It was abandoned and the teenagers used to go in there to see if they would get scared. I was playing and all of a sudden I saw something move very fast behind the fence. To describe it, it looked as if there was a string hidden under the leaves and something was pulling it up. So it looked like something running on top of the leaves except I couldn’t see it. I tried to run but I was completely frozen on the spot. I tried and tried but could not move. I remember tears rolling down my face because I was so scared and could not run. Then all of a sudden I could run. It was like someone un-paused a movie. I ran so fast that I almost fell forward from running too fast. I ran in the house and my mother asked me what was wrong. I said nothing and ate my dinner.

2007-12-20 02:02:30 · 6 answers · asked by tasha 3 in Paranormal Phenomena

I just want to know about ghosts! Do they exist really???????

2007-12-20 02:02:10 · 27 answers · asked by Anonymous in Astronomy & Space

can you explain in the easiest way how to find a percent of change. i am learning about it and i dont get it. for example: Find the percent of increase from 22 to 63. step by step how do you do this???
please help

2007-12-20 01:59:58 · 8 answers · asked by Totallyme 2 in Mathematics

mars. Before You Say its absurb i have found proof.
It has been said that there are megalithic ruins and remains on the surface of Mars. The Zulus of South Africa as well as many other African tribes have legends that speak of their origins being from Mars. Could it be that it was OUR Black African ancestors who were responsible for that civilization that once thrived on the now debunked red planet? Evidence points in that direction. It has been discussed within various circles of Astrophysicists that Mars was once a moon of another planet now destroyed. The asteroid belt between Mars and Jupiter is widely believed to be the remains of Mars’ parent planet. Referred to as Planet X. Tom Van Flandern has a very convincing “exploded planet hypothesis” that cannot be easily refuted by many scientists of today. If this and many of the other points I have brought forward in this essay are disseminated widely, that could force history as we know it to be rewritten. What do you think

2007-12-20 01:57:34 · 11 answers · asked by battla4life p 1 in Astronomy & Space

Lavina wants to buy a rocking chair for $160. She will pay 10% down and pay the rest in six monthly installments. What will be the amount of each monthly payment?

2007-12-20 01:56:57 · 7 answers · asked by yummyummy 1 in Mathematics

1. Find the product (x^2+2)X^2+3)

2. Simplify the expression (x^2y^3divided by2^z)^4

3. Divide the expression (12x^2y^2+6x^2y-15xy^2) divided by 3xy

2007-12-20 01:55:53 · 4 answers · asked by Anonymous in Mathematics