Science & Mathematics - 30 December 2006

2006-12-30 13:56:51 · 4 answers · asked by volleyball4life 2 in Astronomy & Space

2006-12-30 13:52:18 · 2 answers · asked by Vaca 1 in Biology

2006-12-30 13:50:22 · 21 answers · asked by Victor S 1 in Mathematics

Plane A leaves an airport in Vancouvar at 10:00 am. At 11:00am plane B leaves the same airport on the same caourse and overtakes the plane A in 2 and a half hours. If the average spped of plane B is 300km/h faster than plane A, find the speed of each?

2006-12-30 13:50:12 · 7 answers · asked by Cutie 4 in Mathematics

2006-12-30 13:45:49 · 23 answers · asked by tina j 1 in Astronomy & Space

I got this school project and I have to write an essay on electromagnetic energy but I cannot find no info on it. It is an energy of course but where can I find info on it or what is it? What would be the uese of it?

2006-12-30 13:44:44 · 9 answers · asked by Anonymous in Physics

I have been searching on information on why and when do cockroach flys and I couldnt find anything on them only the basic information. But I am a curious person and wanting to know what makes these roaches fly. and why do they have wings.

2006-12-30 13:42:59 · 3 answers · asked by princesagypsymystic83 1 in Biology

2006-12-30 13:40:27 · 5 answers · asked by Wilson A 1 in Geography

2x+y=18
2x-y=22

12a-5b=18
15a-5b=30

How do I tell when to use the addition and subtraction method?? and if you could walk me through one of the problems that would be great....

2006-12-30 13:39:10 · 10 answers · asked by emerydrame 1 in Mathematics

If yes, which species' egg can fertilize a human sperm? Can there be a successful gestation period and finally could an offspring be born?

2006-12-30 13:39:08 · 20 answers · asked by Anonymous in Biology

2006-12-30 13:38:44 · 9 answers · asked by seeya1423 1 in Astronomy & Space

2006-12-30 13:35:10 · 15 answers · asked by latinrn2002 2 in Mathematics

I need help with the following:
1. How do I put a giraffe in my refridgerator?
2. How do I put an elephant in my refridgerator?
3. Simba is holding an animal conference. Every animal attends but one? Which animal doesn't go?
4. There is a river I have to cross, but it's the home of crocodiles. How do I cross it?

2006-12-30 13:34:57 · 7 answers · asked by Anonymous in Zoology

in which he fails, in order to be successful. The number of ways in which he can be unsuccessful (remember its unsuccessful) are _________ ?
answer-256
if the calculation is too difficult to be typed on the computer, then plz indicate the steps in words that will lead me to the answer, though i will appreciate if u could give a full answer. thanks a lot for helping me out.

2006-12-30 13:34:11 · 3 answers · asked by practico 1 in Mathematics

Yep its true! So everytime report card time gets near i stress out and flip and start thinking about bad unnamable things! What do i do to relive the stress i no im im good at school..but math is my c class...what do i do?

2006-12-30 13:28:24 · 13 answers · asked by do u know what it feels like???? 1 in Other - Science

okay so I have a bunch of homework questions like this, and I need to see one example done out to understand. can someone explain the process?
CaO(s) + 2HCl(aq) --> CaCl2(aq) + H2O(l)


For the reaction given above, calculate the mass of each product formed
if 12.5g of the first reactant is combined with 10.0g of the second
reactant. Indicate which substance is the limiting reactant for each case.

2006-12-30 13:28:15 · 2 answers · asked by Colleen 1 in Chemistry

do i do it like
1.
2.
3.
4.
.........


or like this


first.........then..........after that.......

2006-12-30 13:25:20 · 4 answers · asked by ♫ 2 in Other - Science

The last time our fair was in town there was this
bike that if you ride it like 20 feet past a cretain point.
You got any prize and the trick was when you turn the handle bars
the front tire would go the oppisite way causeing the rider to loose
his balance or her because they could not keep it straight while
pedeling. There was like 3 feet wide area marked off by cones that you could not go out of. But of course all the people who worked
there could ride it no problem one of them rode around on it all the way around like 12 rides.
you had to have both hands on the handle bars and your butt could not leave the seat
and you could not pop a wheelie. The front tire could not leave the ground following all these rules The workers had no problem rideing it i want to know the physics behind it and the secrete to rideing a bike like that it was a 1 speed
Much like the sports trick bikes you can buy except it had the ball bareing gear contracption between the handel bars

2006-12-30 13:25:12 · 2 answers · asked by Talking Hat 6 in Other - Science

can you give me 2 reasons why

2006-12-30 13:19:50 · 2 answers · asked by ravens6735 1 in Biology

Ok the project needs a lot of info but i got everything except cutural rituals for the leo constellation...if you have any info or any websites plz post them

2006-12-30 13:18:15 · 4 answers · asked by Monica 2 in Astronomy & Space

2006-12-30 13:16:49 · 19 answers · asked by crystal 1 in Mathematics

Fish, birds, animals, insects etc ... can you think of any that take on the form of another animal. Take the Atlas moth as an example (the largest moth in the world) it's wings take the appearence of a snake, that kind of thing.

2006-12-30 13:13:54 · 12 answers · asked by thedaveidentity 1 in Zoology

can someone pls give me the answer to this calculation pls.

2006-12-30 13:13:42 · 7 answers · asked by I Need To Know 2 in Mathematics

2006-12-30 13:04:28 · 10 answers · asked by paper_boy21 3 in Biology

Which of the following is a direct isometry?

the choices are
a) the composition of an odd number of line reflections
b) a point reflection
c) a glide reflection
d) a line reflection

o and explain why, please and thank you

2006-12-30 13:04:21 · 4 answers · asked by adel q 2 in Mathematics

Please explain with details and examples.

2006-12-30 13:03:39 · 8 answers · asked by nightowl 2 in Astronomy & Space

A book with a mass of 2.0 kg is held in equilibrium on a board with a slope of 60 degrees by a horizontal force. What is the normal force exerted by the book?
A) 39 N B) 61 N C) 15 N D) 34 N
Show/tell me how u got your answer please.

2006-12-30 13:00:06 · 3 answers · asked by need4speed 2 in Physics

Please explain so that a 4th grader can understand, please. Thank you.

2006-12-30 12:59:51 · 15 answers · asked by nightowl 2 in Physics

Hi All,

This is a following question from another question, "Estimate the size of laser spot in digital camera?"

The camera has a zoom function and have been used to obtain this image. If I know the magnification, like 10x, how do I estimate the size of the spot with the zooming effect?

Thank you.

2006-12-30 12:59:03 · 2 answers · asked by Richard 1 in Engineering

2006-12-30 12:57:55 · 7 answers · asked by nightowl 2 in Geography