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Science & Mathematics - 2 November 2006

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2006-11-02 09:15:48 · 4 answers · asked by gobber 2 in Engineering

in a horizontal circle at the end of a string (length = 3.2 m) at an angular velocity of 11.5 rad/s. The string is gradually shortened to 2.7 m without any force being exerted in the direction of the ball's motion.

Find the new angular velocity of the ball in rad/s. And find it's new linear speed in units of m/s.

2006-11-02 09:14:44 · 1 answers · asked by Anonymous in Physics

1. A bank contains 30 coins, consisting of nickels, dimes, and quarters. There are twice as many nickels as quarters and the remaining coins are dimes. If the total value of the coins is $3.35, what is the number of each type of coin in the bank?

2. John, Dan, Karen, and Beth went to a costume ball. They chose to go as Anthony, Cleopatra, Romeo and Juliet. John got the costumes for Romeo and Cleopatra, but not his own costume. Dan saw the costumes for Juliet and Himself. Karen went as Anthony. Beth drove two of her friends, who were dressed as Anthony and Cleopatra, to the ball. What costumes did each person wear?
tnx a lot..

2006-11-02 09:13:36 · 4 answers · asked by ♥Sakura 2 in Mathematics

2006-11-02 09:12:31 · 7 answers · asked by STORMY K 3 in Mathematics

Which lens would have a greater focal length and why? A thick lens or thin lens?

2006-11-02 09:12:20 · 2 answers · asked by Anonymous in Physics

fastest correct answer will get the points!

Gina has a large climbing vine outside her house, which doubles in height every year. Since planting the vine six years ago, it has grown to 26 feet. How many years did it take to grow to half this height?

2006-11-02 09:11:30 · 5 answers · asked by gee 2 in Mathematics

Determine whether each equation is a lineasr equation. If so write the equation in standard form.

1) a + 1/5 b = 2
2) x/4 - y/3 = 1
3) 5/x - 2/y = 7

2006-11-02 09:08:40 · 2 answers · asked by starbrigth001 3 in Mathematics

I was just wondering if the sp3, sp2, sp hybrid orbitals always form sigma bonds? what about the p orbitals..do they always form pi bonds?

2006-11-02 09:08:14 · 3 answers · asked by geeky girl 1 in Chemistry

..which direction would the bubbles go with zero gravity?would it be any differnet if it was in a cup or whichever direction you were holding the can/cup?explain your answer..

2006-11-02 09:08:00 · 4 answers · asked by CivicSounds7 1 in Astronomy & Space

how did Sir Issac Newton revolutionized the thinking of his timeand provided the foundation for the understanding of the relationship between force and motion,as well as how future generation were affected by this work..

2006-11-02 09:05:57 · 3 answers · asked by rose 2 in Physics

1) Prove Cot(a+b)=cotacotb-1
--------------
cotb+cota

2006-11-02 09:04:42 · 2 answers · asked by arsani401 2 in Mathematics

is there such thing as a male lady bug.

2006-11-02 09:01:16 · 5 answers · asked by Anonymous in Zoology

The equilibrium constant for the reaction below is Kc = 9.1 10-6 at 298 K.

2 Fe3+(aq) + Hg22+(aq) <--> 2 Fe2+(aq) + 2 Hg2+(aq)

Calculate the change in G when [Fe3+] = 0.29 M, [(Hg2)2+]= 0.029 M, [Fe2+] = 0.028 M, and [Hg2+] = 0.040 M.

In which direction will the reaction proceed to achieve equilibrium? (right or left?)

2006-11-02 09:00:54 · 1 answers · asked by tigergurrl34 1 in Chemistry

2006-11-02 09:00:25 · 3 answers · asked by taiterbugs2005 1 in Weather

I WANT TO BUILD A GARDEN WALL,10 BRICKS LONG & 3 BRICKS HIGH. CAN IT BE BUILT WITH RED & WHITE SO THAT NO TWO BRICKS OF THE SAME COLOR ARE NEXT TO EACH OTHER?

2006-11-02 08:59:40 · 5 answers · asked by plano3@verizon.net 1 in Mathematics

a.) it decreases
b.) it stays constant
c.) it increases
d.) it varies, depending of the identitiy of the liquid

2006-11-02 08:58:39 · 5 answers · asked by Anonymous in Chemistry

Not reverse time travel (ie somebody arriving from thee future), but forward time travel. Sometime in the future, it will be possible to travel further into the future to bring back information, technology etc.
This thereby avoids the paradoxes which reverse time travel would incur.
Discuss

2006-11-02 08:58:26 · 13 answers · asked by gobber 2 in Astronomy & Space

2006-11-02 08:53:31 · 6 answers · asked by DONNA M 1 in Chemistry

2006-11-02 08:53:20 · 10 answers · asked by martinstebby 1 in Astronomy & Space

how many seconds does it take :
1,(for a rocket) lighting the fuse and exploding in the sky
2,(for a catherine wheel) light the fuse and start spinning

any other timings would be greatful.

2006-11-02 08:52:25 · 5 answers · asked by Anonymous in Physics

What would happen to people and the Earth if the sun collapsed, not exploded at some point in the near future? What would happen to the Sun and everything around it; would that be destroyed? Would the Sun become a black hole? Because the Earth orbits around the Sun because of the Sun's gravity drawing it in, would the Earth fly off on a tangent into outer space? How would people die: cold, lack of light for photosynthesis/no food, disintegration of atmosphere, etc? How long would it take for people to die?

2006-11-02 08:51:18 · 14 answers · asked by Anonymous in Astronomy & Space

In (MoO )
2 4 3
The numbers are spaced half way below each element. I just can't make the computer do that with this set-up

2006-11-02 08:50:08 · 1 answers · asked by ShanAnn B 1 in Chemistry

2006-11-02 08:49:52 · 5 answers · asked by Christina Leah 2 in Weather

I would ask for a raise at my job

2006-11-02 08:49:43 · 9 answers · asked by T-Luv 4 in Medicine

2006-11-02 08:48:52 · 6 answers · asked by AnShalai A 1 in Zoology

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