Science & Mathematics - 29 October 2006

before the total pressure you feel is triple that of atmospheric pressure at sea level (itself about 100,000 Pa)*?

2006-10-29 16:17:56 · 3 answers · asked by gi_crunch 1 in Physics

2006-10-29 16:16:16 · 5 answers · asked by Nick 1 in Zoology

A car of mass of 1500kg traveling at 45.0km/hr enters a banked turn covered with ice. The road is banked at an angle , and there is no friction between the road and the car's tires. What is the radius of the turn if the angle = 20.0 deg(assuming the car continues in uniform circular motion around the turn)?

2006-10-29 16:14:55 · 3 answers · asked by Mich W 1 in Physics

A 0.170 kg projectile is fired with a velocity of +710 m/s at a 2.00 kg wooden block that rests on a frictionless table. The velocity of the block, immediately after the projectile passes through it, is +45.0 m/s. Find the velocity with which the projectile exits from the block.

Can someone help me with this problem?

2006-10-29 16:13:02 · 3 answers · asked by Confused 1 in Physics

A 65.0 kg person, running horizontally with a velocity of +3.68 m/s, jumps onto a 12.2 kg sled that is initially at rest.
(a) Ignoring the effects of friction during the collision, find the velocity of the sled and person as they move away in m/s
(b) The sled and person coast 30.0 m on level snow before coming to rest. What is the coefficient of kinetic friction between the sled and the snow?

Can someone help me work this?

2006-10-29 16:12:30 · 2 answers · asked by Confused 1 in Physics

2006-10-29 16:11:32 · 9 answers · asked by Anonymous in Biology

2006-10-29 16:11:25 · 14 answers · asked by nandhu 1 in Biology

What is pie?

2006-10-29 16:11:10 · 8 answers · asked by Frank T 1 in Mathematics

2006-10-29 16:06:30 · 8 answers · asked by mkanm2002 1 in Physics

i heard about it since child............but i cant figure it

2006-10-29 16:06:27 · 12 answers · asked by Anonymous in Earth Sciences & Geology

The decrease in temperature coupled with the low density of the air in the mesosphere (about 1 gm-3; at the stratopause, or a thousandth of the density at sea-level, to 100 times less at the mesopause) means that the mesosphere includes both turbulence and atmospheric waves which have a wide range of spatial and temporal scales. Such motions are important not only because of the mixing of chemicals that occur as a result, but also because the mesosphere is the region of the atmosphere where spacecraft on re-entry start to feel the background wind structure, rather than just aerodynamic drag. Some of the small-scale waves drive an average seasonal flow upwards from the lower summer polar mesosphere across the equator and down deep into the winter polar stratosphere.

I am having a hard time comprehending it, thank you!

http://library.thinkquest.org/21418/spacee/Mesos.htm

2006-10-29 16:03:04 · 6 answers · asked by terra_chan 4 in Physics

Algebra

2006-10-29 16:02:38 · 9 answers · asked by charms 1 in Mathematics

2006-10-29 16:00:41 · 2 answers · asked by xscarredapplex 1 in Chemistry

Approximately 30% of the calls to an airline reservation phone line result in a reservation being made.
a. Suppose that an operator handles 10 calls. What is the probability that none of the ten calls result in a reservation?
b. What assumption did you make to calculate the probability in Part (a)?
c. What is the probabililty that at least one call results in a reservation being made?

2006-10-29 15:59:53 · 3 answers · asked by portuguesechick89 2 in Mathematics

This needs to be completed by completing the square. When I tried this, I got (8,8). But the answer is supposed to be (7,-9).

2006-10-29 15:59:33 · 3 answers · asked by C 1 in Mathematics

Theoretically speaking, if you were to travel at the speed of light, time would pratically freeze relative to you. What would happen if you traveled faster than the speed of light?

2006-10-29 15:57:53 · 9 answers · asked by petswodahs 1 in Physics

how much does the oxidation number of iodine increase in the reaction:

2MnO4– + I– + H2O -----> 2MnO2 + IO3– + 2OH–

is it 6?

2006-10-29 15:57:41 · 1 answers · asked by basic 1 in Chemistry

Hi,
My name is Lyndee and I am Physics major attempting a detailed yearlong research project for my Honors Colloquium. I am in dire need of a suitable mentor. Exclusive online correspondence is completely acceptable and very little effort is really required on your part--mostly e-mails.
Research Topic, TOE

Preferred Mentor Qualifications;

Physics Experience, either degree/published author/or notable experiences

Considerable knowledge of Quantum Mechanics and Antiparticles

Credible opinions regarding Hawking's theory of multi universes and whether or not his current black hole equation is likely valid.

OPINIONS/INTERVIEWS from qualified Physics persons would be a wonderful addition to my research project, even if you are too busy to provide information over an extended period of time, it would be greatly appreciated if you could fill out a questionnaire by e-mail or snail mail (postage provided). All information provided will be cited with your name and titles.

2006-10-29 15:54:43 · 1 answers · asked by lyndee_michelle 1 in Physics

...or country for the international crowd?

2006-10-29 15:54:12 · 27 answers · asked by Anonymous in Geography

2006-10-29 15:51:07 · 1 answers · asked by jayanth v 1 in Physics

Function

2006-10-29 15:51:00 · 2 answers · asked by jenny trong 1 in Mathematics

burn differently in different temperatures? I know, of course, that rain or snow or other weather related elements would affect it, but what about two environments where, assuming no rain/snowfall, the only difference between the two is an extreme difference in temperature? Thanks!

2006-10-29 15:50:43 · 5 answers · asked by tagi_65 5 in Physics

2006-10-29 15:48:38 · 7 answers · asked by Navy SEAL - 42 2 in Chemistry

I have been thiking about it over and over again...can anyone give me some clues about it?

2006-10-29 15:48:26 · 6 answers · asked by lordamit91 2 in Astronomy & Space

This might be a dumb question .. but I do not understand how to interpret this linear regression equation problem:

Bottles of spring water are bundled in packages contatining 6, 12, or 25 bottles. The respect prices are given in the table below:

no. of bottles | price
--------------------------------
6 | $3.99
12 | $5.99
25 | $8.29

The linear regression (on ti-83 plus) comes out to be:

y = .2183745583x + 2.959964664

I know what the slope & y-intercept are from ax+b

but how do I interpret these numbers in terms of the situation (slope of the regression equation & y-intercept of the regression equation).

Thanks.

2006-10-29 15:47:35 · 4 answers · asked by Anonymous in Mathematics

2006-10-29 15:46:45 · 6 answers · asked by erick23714 1 in Astronomy & Space

Bob invested $21,000, part at 18% and part at 8%. If the total interest at the end of the year is $1,980, how much did he invest at 18%?

2.Solve the system by addition.
–3x + 4y = –16
x – 2y = 12
3.Graph f(x) = 3x + 2.

4.Solve the following system of linear inequalities by graphing.
x – 2y less than equal to 4
x greater than equal to 4

2006-10-29 15:44:12 · 7 answers · asked by Felton T 1 in Mathematics

2006-10-29 15:42:02 · 2 answers · asked by webradio 1 in Physics

As a fundamental rule of Physics, no matter can be created or destroyed. We also know that Black Hole sucks anything in its path, including light. But what happens to all the stuff the Black Hole absorbs once the Black Hole dissapears?

2006-10-29 15:42:01 · 7 answers · asked by petswodahs 1 in Astronomy & Space

A rectangular water tank has length 20ft, width 10ft, and depth 15ft. If the tank is full, how much work does it take to pump all the water out

2006-10-29 15:40:15 · 4 answers · asked by cmanoos09 1 in Mathematics