Science & Mathematics - 19 December 2007

i want to do a part time course in plumbing,does anyone know whats the best one to get N V Q etc

2007-12-19 03:11:51 · 6 answers · asked by Anonymous in Engineering

the centripetal force on the car is 6,000 newtons. What is the radius of the curve?
a. 160 m
b. 80 m
c. 32m
d.16 m

2007-12-19 03:07:21 · 5 answers · asked by Anonymous in Physics

2007-12-19 03:05:16 · 5 answers · asked by kuc2215 2 in Mathematics

Simplify. 3sqrt72

a=6sqrt18 b=36 c=6sqrt6 d=18sqrt2

2007-12-19 03:04:45 · 2 answers · asked by ivan m 2 in Mathematics

a. the earth rotates around the sun
b. the sun is the center of the universe
c. the earth rotates around the moon
d. planets orbit in circular paths around the earth

2007-12-19 03:02:07 · 1 answers · asked by Anonymous in Physics

HE HAS THIS INFO: 1 CORD = 128 CUBIC FT: 1 CORD = ABOUT 5000 LBS: 1 CORD = 500 BOARD FEET.....
SO HE HAS 30 FT POLES AND WANTS TO KNOW HOW MANY LBS EACH POLE WEIGHS & HOW MANY CUBIC FT IS IN 1 POLE. THANKS

2007-12-19 02:56:42 · 3 answers · asked by steven g 2 in Engineering

2007-12-19 02:56:09 · 1 answers · asked by angelfish72003 2 in Mathematics

2007-12-19 02:55:49 · 2 answers · asked by Math I 1 in Mathematics

Heisenberg's Uncertainty Principle says that we cannot determine both the exact position and velocity of a particle at the same. However, can't the particle be brought to a stop and thus, the principle be violated? Or would it break out due to something like Pauli's exclusion principle? How does it work? What if a particle temperature is reduced to an absolute zero? Won't it be totally out of energy??

2007-12-19 02:53:26 · 7 answers · asked by Anonymous in Physics

1) tan(345°)= -2 -(square root of 3)
2) csc(915°)
3)tan((-7pi)/(12))
4)sec(pi/12)
5)sin(x-y) if cos x=(8/17) and cos y = (3/5)
6) tan (x-y) if csc x = (13/5) and cot y= (4/3)


We had those for a test a few weeks ago, but i still don't quite understand them. I know how to work them, but i am doing something wrong along the way. If you could please work these out and show your work, i would greatly appreciate that. Thanks!!

2007-12-19 02:53:18 · 3 answers · asked by missyjc12 2 in Mathematics

2007-12-19 02:52:06 · 4 answers · asked by ... 1 in Earth Sciences & Geology

Big bang or Creation as one prefers, understand theory that content of the universe before the event was the size of a marble. Question: Space, part of the event or did it exist before? Space its self, is made up of?

2007-12-19 02:50:52 · 12 answers · asked by edubya 5 in Astronomy & Space

2007-12-19 02:47:02 · 13 answers · asked by Anonymous in Astronomy & Space

2007-12-19 02:40:55 · 6 answers · asked by 1,618 1 in Geography

i was diagnosed with psycosis a few months back and the doctor said i would need to keep taking my tablets for a while yet, they are zuclopenthixol but i havent taken them since saturday, is this dangerous? what could happen?

2007-12-19 02:31:47 · 3 answers · asked by Peter L 1 in Medicine

Compute the angle, in radians, between the two vectors:

A=5i - 8j

B=7i + 3j

2007-12-19 02:31:06 · 6 answers · asked by Anonymous in Mathematics

give you clues, like one is twice as old as the one that is 3 yrs older than the youhngest that is 1/2 as old as the oldest.
Not exactly that stuff but you know the word problems.

Also the ones with 2 trains leaving diff locations, diff speeds...

2007-12-19 02:30:41 · 1 answers · asked by Anonymous in Mathematics

Given the base ten number 95. Convert it to base two.

What's the work involved in this, have several similar questions.

2007-12-19 02:26:23 · 10 answers · asked by Anonymous in Mathematics

I am just wondering out loud?
The insidious inside is gone....lets call in the Vultures.

2007-12-19 02:22:38 · 16 answers · asked by Anonymous in Zoology

If premium A is 186,625
and premium B is 173,625
what is the precent increase?
Help would be greatly appreciated!!!!!!!!!!!

2007-12-19 02:14:40 · 6 answers · asked by mittens1372 1 in Mathematics

2 fair and regular dice are rolled. Let's define the following 2 events.
A - event that the first die is a 4
B - event that the sum of the two dice is 7

Are A and B independent or dependent?

2007-12-19 02:14:20 · 8 answers · asked by Dr D 7 in Mathematics

2007-12-19 02:13:26 · 6 answers · asked by Anonymous in Engineering

I am 14 i am going to space camp in Alabama later this year, and i was wondering what to expect? Like is it a group thing? Will i be alone? Will i be with other people my age? That sort of thing.

2007-12-19 02:13:23 · 4 answers · asked by mavsoxhawks 2 in Astronomy & Space

like..bombs? what else?!
evidence?!please..its for my essay..thanks..urgent!!=]

2007-12-19 02:09:35 · 4 answers · asked by cReeZtall! 2 in Earth Sciences & Geology

Gaze at the vivid yellows,blues,and psychedelic swirls of a single emperor angelfish and you'll sense the whimsy of evolution. Go on to explore its home in lush coral reefs and you'll soon hit sensory overload,assaulted by colors and patterns that range from sublime to garish.Coral reefs are unquestionably the world's most colorful places.But why?

2007-12-19 02:05:37 · 6 answers · asked by nithya sam 1 in Biology

5-5
Solve each equation by using square roots property
2)x squared -12x + 36 =25
4)9x2squared-24x+16=2
Find the value of c that makes each trinomial a perfect square. Then write the trinomial as a perfect square.
8) x squared-12x+c
Solve each equation by completing the square

10) xsquared + 3x -18=0
12) 2x squared- 3x-3=0
14) x squared+2x+6=0
Solve each equation by competing the square
16) x squared +4x+4=25
18) x squared-9x+81/4=1/4
20)x squared +8x+16=7
22) x squared +12x +36 =5
Find the value of c that makes each trinomial a perfect square then write it as a perfect trinomial square
24) x squared + 16x+c
26) x squared -5x +c
Solve each equation by completing the square
28) x squared -8x+15=0.
30) x2 +2x-6=0
32) 2xsquared +3x-5=0
34) 2x squared +7x +6=0
36) x squared-4x +5=0
38) x squared-10x+28=0

2007-12-19 02:02:56 · 3 answers · asked by Anonymous in Mathematics

An object will travel along a straight line in two dimensional space from the point (2,1) to the point (4,-5). Find the equation of this line.

2007-12-19 01:58:07 · 4 answers · asked by dustin_r_85 1 in Mathematics

2007-12-19 01:56:12 · 1 answers · asked by mason e 1 in Chemistry

automotive engineering

2007-12-19 01:49:09 · 3 answers · asked by grbn 1 in Engineering

1. at 525 mm Hg and 85 degrees C, the volume of a sample of nitrogen gas is 26.8 L. What is the volume at STP?

a. 1 L
b. 10.9 L
c. 15.3 L

is it b?


2. when a 0.500 mole of sodium is produced according to the reaction 2NaN3 -->3N2 + 2Na, how many moles of nitrogen gas are also produced?

a. 0.750 moles
b. 1.5 moles
c. 2 moles
d. 3 moles

is it a?


3. a cylinder of compressed gas has a volume of 3.85 L and a pressure of 463 kPa. What volume would the gas occupy if it were allowed to escape into a balloon at a pressure of 110 kPa? Assume constant temperature.

a. 11.5 L
b. 16.2 L
c. 22.4 L
d. 28.9 L

is it c?


4. a cylinder contains 6.94 L of a gas at a temperature of 15 degrees C. The cylinder is heated, and a piston moves in the cylinder so that constant pressure is maintained. If the final volume of the gas in the cylinder is 8.50 L, what is the final temperature?

a. 12.2 degrees C
b. 38 degrees C
c. 54.6 deg C
d. 80 deg C

is it b?

2007-12-19 01:48:33 · 2 answers · asked by Anonymous in Chemistry