Science & Mathematics - 29 November 2006

2006-11-29 04:10:02 · 8 answers · asked by boy boy 7 in Engineering

2006-11-29 04:09:43 · 3 answers · asked by matrix 1 in Geography

Dry air is approximately 78% nigtogen, 21% oxygen and 1% argon, by number of molecules. What is the partial pressure of oxygen in a sample of dry air, if atmospheric pressure is 751 torr?

2006-11-29 04:09:34 · 1 answers · asked by lucid_dreams6 1 in Chemistry

2006-11-29 04:09:29 · 2 answers · asked by Anonymous in Astronomy & Space

I'm looking for symbols for resistor, capacitors, coils, switches, transistors, diodes, etc.

2006-11-29 04:09:27 · 2 answers · asked by wisdom tooth 3 in Engineering

Freon-12 CF2Cl2 has been widely used in air conditiong systems, is consisdered a threat to the ozone layer in the stratosphere. Calculate the root-mean-square velocity of Freon-12 molecules in the lower stratosphere where the temp is -65 degrees C.

2006-11-29 04:08:03 · 2 answers · asked by lucid_dreams6 1 in Chemistry

in the presence of an appropriate catalyst, both gases add hydrogen. the hydrogenated products are identified their molecular weight is 58. which of the structures below can be eliminated by this information?
1. trans but-2-ene
2. cis but-2-ene
3. but-1-ene
4. 2-methylpropene

2006-11-29 04:07:18 · 4 answers · asked by (: 2 in Chemistry

Where is the Punjab area in India?

2006-11-29 04:06:12 · 3 answers · asked by nikita95231 1 in Geography

If you are like myself and don't like certain things such as losing scalp hair, excess body hair, body fat etc... do you think science is reaching a point where anything is possible regarding changing your appearance? For example, the lady who had the face transplant now looks almost normal (although she still has to take dangerous immune suppressants). In future (or even now), can we all look good or great? Have you had a cosmetic procedure you are happy with of late?

2006-11-29 04:02:48 · 4 answers · asked by Apeman 1 in Biology

2006-11-29 04:02:26 · 3 answers · asked by njank99 4 in Medicine

the line can go vertically...diagonally...or horizontally. but only one line can be added

2006-11-29 04:01:58 · 9 answers · asked by please answer 1 in Mathematics

Kind of a long one:

Lef f: G to H be a homomorphism, and suppose that the order of the ker(f) = n. For any h in f(G), find the number of elements in f ^-1(h). I got that part, heres the part I'm having trouble with.
Let f, G, and H be as in part a. Use your result in a to prove taht if K is a finite subgroup of G, then the order of f(K) divides the order of K.

Thanks

2006-11-29 04:00:17 · 1 answers · asked by mobaxus 2 in Mathematics

signal/noise

2006-11-29 04:00:02 · 1 answers · asked by JAMES 4 in Engineering

- What are the effects of each chemical?
- to the surrounding plant life
- to the surrounding animal life
- to the surrounding environment
- land, air and water supply
- to the surrounding human population
- health concerns

2006-11-29 03:58:36 · 2 answers · asked by Anonymous in Chemistry

2006-11-29 03:57:25 · 12 answers · asked by Jasmine 1 in Biology

2006-11-29 03:52:26 · 5 answers · asked by Anonymous in Biology

2006-11-29 03:51:32 · 2 answers · asked by Sarah E 1 in Geography

http://www.phoenix-freeware.co.uk/ufo.jpg

2006-11-29 03:51:29 · 18 answers · asked by Anonymous in Astronomy & Space

Directions: Choose which problem the equation could represent.

1.
243 x = 96

A.The length of a field is 243 feet. The width is 96 feet. What is the area of the field?

B.The length of a field is 243 feet. The width is 96 feet. What is the perimeter of the field?

C.Marcel had $243 in the bank at the beginning of the month. By the end of the month she only had $96. How much did she spend during the month?

D.Antoine drove 243 miles in the morning and 96 miles in the afternoon. How many miles did she drive altogether?

Choose the equation which represents each problem.

3.If Jocelyn earns $10 a week for mowing the lawn, in how many weeks will she have $32?

A.

B.

10 + x = 32

C.

x 10 = 32

D.

10x = 32


4.Bay Village is 32 km from Londonderry. If a car traveling between the two cities is 10 km from Londonderry, how far is the car from Bay Village?

A.
x/10= 32

B.

10 + x = 32

C.

x 10 = 32

D.

10x = 32

2006-11-29 03:50:59 · 5 answers · asked by wish on a star 1 in Mathematics

The sequence is 1, 1, 9, 9, 25

I've been told that there isn't a definite Nth term but if you can find one that would be very helpful. Working will be appreciated.

Also could you try these sequences too:

1, 5, 13, 25, 41 (Total No. Of Squares)

0, 4, 8, 12, 16 (Border Squares)

4, 24, 60, 112, 180 (Right Angles)

Again working would be appreciated. The Names in brackets are just so I can remember which sequences they are.

2006-11-29 03:50:23 · 7 answers · asked by Anonymous in Mathematics

2006-11-29 03:48:22 · 6 answers · asked by busybody-50 1 in Earth Sciences & Geology

2006-11-29 03:47:02 · 11 answers · asked by uk_duggy_uk 3 in Physics

2006-11-29 03:43:21 · 2 answers · asked by Anonymous in Engineering

2006-11-29 03:43:12 · 10 answers · asked by Anonymous in Geography

2006-11-29 03:42:21 · 4 answers · asked by Marcus B 1 in Physics

Here is my topic on physics: Study the energy change as a tennis ball rebounds from different surfaces.

Methods that i though of: Calculating Coefficient of Restitution, Energy lost as it rebounds, Coefficient of Friction.

Any ideas on this topic.....please i really need help on it

thanks

2006-11-29 03:40:06 · 4 answers · asked by sourav_chatterjee1989 2 in Physics

2006-11-29 03:39:51 · 6 answers · asked by Anonymous in Geography

2006-11-29 03:39:02 · 16 answers · asked by Anonymous in Mathematics

This is not dealing with freakin reality k? just answer the dang question.

2006-11-29 03:35:35 · 6 answers · asked by Anonymous in Astronomy & Space

Has any human died in space? Thank you.

2006-11-29 03:34:46 · 9 answers · asked by bAzTNM 2 in Astronomy & Space