Science & Mathematics - 17 August 2007

I need help with these three questions please help physics final coming up this week!!!

A disk initially rotatin at 120 rad/ s is slowed down with a constant angular accel of 4 rad/ s^2

1. how long does it take to stop?
2. through what angle does the disk rotate during this time?
3. how many revolutions does it make before stopping?

PLEASE HELP !!!

2007-08-17 07:14:53 · 2 answers · asked by Anonymous in Physics

will you eventually find other galaxies and planets, the same with if you go up towards earth like if you go over earth in you ship and keep going up, i hope you guys know what i mean, ive had this question on my head for a while, thanks.

2007-08-17 07:13:11 · 7 answers · asked by ghetto boy 1 in Astronomy & Space

2007-08-17 07:08:24 · 4 answers · asked by Lillian M 1 in Mathematics

...or are there just areas of our reality that we don't have the ability to understand?

UFOs, telepathy, you name it.

could we be shunning the truth?

2007-08-17 07:08:12 · 19 answers · asked by Anonymous in Paranormal Phenomena

Can you simplify this problem for me please.

Va7 * b3 * c5

V= square root sign

* = multiplying sign

2007-08-17 07:07:40 · 3 answers · asked by Kwan L 2 in Mathematics

2007-08-17 07:06:20 · 6 answers · asked by kyletank 1 in Astronomy & Space

I’ve read recently that propelled photons “can travel faster than light”

Was Einstein wrong after all, or this theory will be shrugged off eventually?

Thanks

http://www.newscientist.com/channel/fundamentals/mg19526173.500-photons-challenge-the-light-barrier.html

2007-08-17 07:06:16 · 44 answers · asked by toietmoi 6 in Astronomy & Space

Name two metals that you would not use. Explain your choices.

2007-08-17 07:05:48 · 3 answers · asked by Anonymous in Chemistry

Sodium chloride is acooman and vary compound its chemical formula ic NaCI. What is sodium chloride an example of?

a heterogeneous mixture

a pure substanc

a homogeneous mixture

none

2007-08-17 07:02:37 · 4 answers · asked by Ken h 1 in Chemistry

plz give me info regarding this with view from allopathic medicine, does it nessesary to take plenty of water after taking pills?

2007-08-17 06:59:47 · 3 answers · asked by maddy 2 in Medicine

2007-08-17 06:58:54 · 3 answers · asked by yatin y 1 in Astronomy & Space

2007-08-17 06:54:24 · 4 answers · asked by Lillian M 1 in Mathematics

2007-08-17 06:50:04 · 9 answers · asked by Lillian M 1 in Mathematics

landlord owes 6% to rent and want to calculate it myself and forget how to do that.

2007-08-17 06:44:18 · 9 answers · asked by 2hot2bamom 2 in Mathematics

1) Solve

x^2+3x+2/x^2+5x+4 = 3/2

Where x not equal to -1 and x not equal to -4

2)

http://img411.imageshack.us/img411/2008/newbitmapimagews3.png

In the given figure AB=AC and angle ACD = 120
Find ‘angle’ A

3)
In the given figure AB=CF, EF=BD
‘angle’AFE = ‘angle’DBC
Prove that

‘triangle’AFE ‘Congruent to’ ‘triangle’CBD

http://img519.imageshack.us/img519/1885/newbitmapimage2pn0.png


4)
In the given figure X and Y are two points on equal sides AB and AC of ‘triangle’ABC such that AX=AY. Prove that XC=YB

http://img519.imageshack.us/img519/7133/newbitmapimageub1.png


5)
In the given figure ‘angle’A = ‘angle’C and AB=BC
Prove that ‘triangle’ABD ‘Congruent to’ ‘triangle’CBE


http://img293.imageshack.us/img293/6393/newbitmapimage2jz4.png


6)

In the given figure S is any point on the side QR of ‘triangle’PQR. Prove that PQ+QR+RP ’greater than’ 2PS

http://img339.imageshack.us/img339/9617/newbitmapimageoq2.png

2007-08-17 06:44:15 · 6 answers · asked by friend s 1 in Mathematics

solids

liquids

gases


molecules

1 2 and 3

2007-08-17 06:43:10 · 2 answers · asked by Anonymous in Chemistry

2007-08-17 06:42:53 · 3 answers · asked by Alice H 1 in Zoology

2007-08-17 06:40:50 · 2 answers · asked by jainvikas162 1 in Physics

one - third of his rabbits were female. If x represents the original number of rabbits then,

1/2x - 2 = 1/3(x -2)

Solve this equation to find out what number of rabbits that he had before the sale?

2007-08-17 06:39:47 · 4 answers · asked by lala haha gaga mama 2 in Mathematics

2007-08-17 06:37:31 · 15 answers · asked by Anonymous in Other - Science

Pls Tell me something or facts that links to 1947 Roswell UFO discoveries...

2007-08-17 06:35:55 · 11 answers · asked by boodiepj 1 in Astronomy & Space

the equation is 48 divided by 3 x 2 - 2 x 3 = 2 and i need to know where the perenthisis go to make the answer true...help plx

2007-08-17 06:33:48 · 4 answers · asked by Anonymous in Mathematics

because i just saw a walking fish in showtime i'm just curios

2007-08-17 06:28:38 · 10 answers · asked by eagle 2 in Zoology

pure substance

electron

mixture

phase

2007-08-17 06:28:09 · 7 answers · asked by Anonymous in Chemistry

2007-08-17 06:27:49 · 10 answers · asked by Lola 1 in Biology

How far in the future do you think this will be? How long do you think it will take to get there?

2007-08-17 06:27:05 · 8 answers · asked by Sherry 1 in Astronomy & Space

I need solutions for the batteries and modules as well as inverters and controllers that will go into this demo project. It will be completely off grid since the house is off grid. I need all the abc steps to setting up this energy solution for my cottage

2007-08-17 06:23:41 · 4 answers · asked by Mazi 1 in Engineering

In the double slit experiment we observe interference pattern when two slits are used and no detector is present at slits , now when the electron gun fires at a very slow rate suppose 1 elec/30 min then also we observe interference pattern , now we wish to see that elec is going through which slit so we place a detector with a very high resolution at one slit then we do not observe the interference pattern , suppose the resolution is made as low as possible as half width of slits then will we observe intereference pattern or not ? If we do not then the contradiction is that we should observe the interference pattern but we are not , am i right ?

2007-08-17 06:22:01 · 3 answers · asked by Devil 4 in Physics

If 125 is appended to the right end of the number

5^(n-1) - 1
------------------ , the number 5^n is obtained . which of the
8
following is true of n ?

(a)n=4k , k belongs to N

(b)n=4k+2 , k belongs to N

(c)n belongs to N and n >2

(d)n=2k+1 , k belongs to N

2007-08-17 06:21:48 · 2 answers · asked by calculus 1 in Mathematics

1)5 - 3(2x + 4) = 25

After distributing, How Should question should read

2) first step for this equation: -3(x - 4) = 2x + 10

3)3 - (x + 4) = 7

After distributing,What Should you get

4) Whats the next step to this equation 5 - 2(4 - x) = 17

5) The first step to solving this equation;
5 - 3(4x + 7) = 2(x + 5), is to...

2007-08-17 06:21:20 · 3 answers · asked by Patrice 1 in Mathematics