Science & Mathematics - 6 October 2007

2007-10-06 06:25:29 · 3 answers · asked by Baller T 1 in Physics

2007-10-06 06:24:48 · 4 answers · asked by Kiki 2 in Biology

2007-10-06 06:22:40 · 7 answers · asked by Anonymous in Biology

2007-10-06 06:22:31 · 6 answers · asked by Danny M 1 in Physics

How do I find an example of a non-abelian group that has exactly four elements of order 10.

2007-10-06 06:18:48 · 4 answers · asked by Anonymous in Mathematics

plese tell in the easyest way possible without long paragraphs.

2007-10-06 06:18:22 · 3 answers · asked by Anonymous in Earth Sciences & Geology

I am doing a report on satellites and space stations

2007-10-06 06:18:10 · 4 answers · asked by frog princess 2 in Astronomy & Space

There was this episode of desperate housewives having a negative feedback of Philippine medical shools...

2007-10-06 06:14:17 · 2 answers · asked by Mike 3 in Medicine

I mean what if it's not?, does it change anything?

2007-10-06 06:10:46 · 7 answers · asked by Grg 2 in Physics

Can anyone explain to me in simple terms how to factorise??

2007-10-06 06:06:43 · 7 answers · asked by JB 4 in Mathematics

)Calculate the gravitational potential of a point on the surface of the moon closest to the earth( ans : -3.9X10^6 J/kg)
Data : Mass of Earth : 6 X 10^24m
Mass of moon : 7.4 X 10^22m
radius of moon : 1.7 X 10^6 m
dist from centre of earth to centre of moon : 3.8 X 10^8m

what does it mean by a point on the surface of the moon closest to the earth?

if possible, do include a short statement of what the calculations involve. thanks alot!

2007-10-06 06:01:55 · 3 answers · asked by Anonymous in Physics

A 110 kg piano is placed on an incline of 35 degrees. the coefficient of friction between the piano and the incline is .13. What is the force of friction on the piano? What is the piano's acceleration down the incline?

im not sure what to do, for the force of friction i have two different answers, i got 80N and 114.79N.. i dont know if they're right.. then i have no idea how to figure out the acceleration..

please help!!

2007-10-06 06:01:51 · 1 answers · asked by Anonymous in Physics

We ALL know it feels good, but why does it feel good?

2007-10-06 05:59:19 · 4 answers · asked by 9 Toes 4 in Other - Science

i am good at math, physics and chemistry.
i am 13.
what all do i have to go through to become a cosmonaut (astronaut), i mean what all course do i have to complete.

2007-10-06 05:59:15 · 4 answers · asked by SIMONE 5 in Astronomy & Space

I think I got this one right, just want to doublecheck is all. Thanks in advance!

A plane is flying in a loop to simulate weightlessness for a brief instant. If the speed is 215m/s, what is the radius of the circle?

I have since v = sqrt rg where v is velocity, r is the radius, and g is gravity, that it comes out to (215^2)/9.98 = 4631.7635m

Did I do this correctly? If not, please explain what I did wrong and get me on the right track. Thanks!

2007-10-06 05:58:46 · 3 answers · asked by mr_peepers810 5 in Physics

2007-10-06 05:54:53 · 4 answers · asked by ahmed 1 in Mathematics

a. the amount of methane that contains 4 x 6.022 10^23 H atoms

b. the amount of methane that contains two molecules of H2

c. the amount of methane that contains 12.0 g C

2007-10-06 05:53:53 · 2 answers · asked by jeff S 1 in Chemistry

If the sum of three consecutive odd integers is 69, what is the largest odd integer?

2007-10-06 05:50:51 · 8 answers · asked by Monique L 2 in Mathematics

Anyone who can answer this plz do as i cannot figure it out, all the calculators on the net say its infinity but i doubt that.
Here it is: (9^62773 + 2)^83721
Yes thats (9 to the 62773 power plus 2) to the 83721 power.
Now heres the rest of the problem...after finding the Huge number i have to find its digital sum. if u dont know what that means just give me the answer to the problem. 10 points to the person who gives me the answer( i just cant find a calculator that can do this!!!)

2007-10-06 05:47:11 · 4 answers · asked by Sk8ing Hawaii 2 in Mathematics

2007-10-06 05:46:55 · 10 answers · asked by jean_has_cats 2 in Engineering

Did they really landed on moon or just fooled the world ?
Their snaps clearly proves that they were taken on earth. If NASA cant send moon on man, then how can they think of sending man on Mars ?

2007-10-06 05:44:50 · 21 answers · asked by Anonymous in Astronomy & Space

2007-10-06 05:36:30 · 16 answers · asked by Anonymous in Astronomy & Space

Initial Length Final Length Feel / Bend
No Salt 5 cm 5.2cm Fells hard
Medium Salt 5cm 5.3cm Feels bandy
High Salt 5cm 4.9cm Feels more bandy

My qustion is :
How would increasing the temperature of the hypertonic solution affect osmosis for the potato strip?

And also how does this work?

2007-10-06 05:35:56 · 2 answers · asked by Anonymous in Biology

find the exact value of:

a) sin 2theta
b)cos 2 theta
c)sin theta/2
d) cos theta/2

all that is given is sin theta = (-sqroot3)/3

please help and explain this, I'm having a hard time!!! thanks

2007-10-06 05:35:31 · 2 answers · asked by rickyricardoiscool 1 in Mathematics

A crate of mass 10.7 kg is pulled up a rough incline with an initial speed of 1.50 m/s. The pulling force is 190 N parallel to the incline, which makes an angle of with the horizontal. The coefficient of kinetic friction is 0.450, and the crate is pulled 4.40 m.

a) How much work is done by gravity?
b) How much mechanical energy is lost due to friction?
c) How much work is done by the 190 N force?
d) What is the change in kinetic energy of the crate?
e) ) What is the speed of the crate after it has been pulled 4.40 m?

2007-10-06 05:31:55 · 1 answers · asked by snow200098 2 in Physics

2007-10-06 05:31:19 · 5 answers · asked by anurag 2 in Astronomy & Space

how to evaluate cot (pi/6) without using calculator?

2007-10-06 05:28:46 · 3 answers · asked by cooldude123 2 in Mathematics

??? I dont need a description but just all five of them THANKS!

2007-10-06 05:12:30 · 3 answers · asked by Jill 2 in Biology

An RCMP patrol boat left Long Beach and sailed west for 2 hours at 15 km/h, then North for 2 h at 20 km/h, then east for 1 h at 10 km/h. How far was the patrol boat from Long beach, to the nearest tenth of a kilometre?
So, how would you do this question? What are the steps to solving it?

2007-10-06 05:11:34 · 4 answers · asked by Anonymous in Mathematics

Hey, can someone explain the relationship between linear and angular momentum. I know the equations p=mv (for linear momentum) and L=rp (for angular momentum). So how do i find out the linear speed of an object that's being spun around a center point. Say a disk of 500 kg of radius 1 meter being spun around once every second. So how do i find out the v in p=mv to find out the angular momentum ?
The simpler the help the more the thanks.

2007-10-06 05:10:11 · 1 answers · asked by David M 1 in Physics