School and Work

Sorry, I could not read the content fromt this page.

View the original article here

Our planet: The Earth has an atmosphere that contains 78.08% nitrogen, 20.95% oxygen, 0.93% argon, 0.038% carbon dioxide, and small percentage of various other chemicals and elements. What I want to know is what is the Nitrogen on our Planet used for? I thought that breathing in nitrogen could kill you, and it composes most of our atmosphere, so why aren't any of us just dying so suddenly. I'm still confused, I assume your answer will be that the oxygen displaces the nitrogen. But I want to make sure, and I also want to know what purpose Nitrogen has for sustaining life here on Earth, if there is any purpose for it.

Thank You.

View the original article here

1: A: at what elevation does the coldest temperature occur?
B;what name is given to this point in the atmosphere?
C:what is the temperature of this region?

2: A: at what elevation does the hottest tmperature occur?
B: what name is given to this point in the atmosphere?
C: what is the temperature of this region?

3:why are clouds generally observed to form only in the troposphere?

4: which layer acts like a giant magnet?what does it attract?

5: what does the air in the troposphere do as it heats up from the sun?

6: why is water vapor an important part of the atmosphere?

7:what is at the "top" of the exosphere?

k thanks

View the original article here

Home >All Categories > Science & Mathematics >Engineering >Open Question zaidS Member since:September 20, 2009Total points:99 (Level 1)through a 10-cm-diameter hole at the top of the sphere.Liquid acetone inside the tank evaporates and es-capes out of the hole. Air flows over the hole so that the acetone vapors are immediately swept away. Liquid acetone is continually fed to the tank to maintain a constant liquid level at the midpoint of the tank, and the tank is heated to maintain the temperature at 298 K as the acetone evaporates. Develop an equation to predict the total molar rate of acetone vapor emissions from the sphere. What is the acetone emissions rate if acetone exerts a vapor pressure of 3.066 x 104 Pa at 298 K?Answer Question

by Daniel Member since:December 10, 2009Total points:268 (Level 2)An equation is not the problem, the total molar rate is the issue

View the original article here

Home >All Categories > Science & Mathematics >Physics >Open Question King Member since:January 21, 2007Total points:80 (Level 1)Near the surface of the Earth, the magni-
tude of the Earth’s magnetic field is about
4.32 × 10-5 T.
The permeability of free space is 4pi×
10-7 T · N/A.
How much energy is stored in 0.955 m3 of
Earth’s atmosphere?
Answer in units of J.Answer Question

Be the first to answer this question.

View the original article here

Home >All Categories > Science & Mathematics >Physics >Open Question Aaron Member since:July 10, 2010Total points:165 (Level 1)This is related to a personal project, but I am a student and do not lack the sage-like knowledge many Yahooers have. So, can an object both encircle the Earth and be touching the Earth's atmosphere without crashing down? Please elaborate, and your answer will go to good use (or at least my thorough contemplation and then dismissal...)Answer Question

Be the first to answer this question.

View the original article here