Friday
December 19, 2014

Posts by pat


Total # Posts: 713

SCIENCE
Is this true or false? I am confused. Tests have been conducted to mine uranium from seawater. My book says that at one time or another Japan, Germany, and the United States have expressed interest in the extraction of uranium. Japan set up a land-based test plant in 1986 to ...
December 20, 2006

SCIENCE
The most common ion dissolved in river water is chloride, carbonate, sodium, phosphate, or nitrate. I think the answer is sodium chloride but the answer has these two separated. Is the answer just sodium? No, the answer is not sodium. The answer is chloride ion. Later on in ...
December 20, 2006

SCIENCE
Please see if I have the right answer. The three atoms in a water molecule are held together by oxygen bonds, covalent bond, surface tension, hydrogen bonds, or gravity. I think it's covalent bonds. Am I right? Water molecules, even inflowing water, can link together by ...
December 8, 2006

SCIENCE
Seawater of average salinity freezes at about: a. 32 degrees F b. 0 degrees C c. -2 degrees C d. -10 degrees F I think it's -2 degrees C but want to be sure. Please check for me. Thanks That's right. The freezing temp of sea water is given in that last wikipedia ...
December 8, 2006

SCIENCE AGAIN
Thanks so much for all your help. These multiple choice questions always have me confused. Here goes: The density of fresh water either a.)reaches a maximum at 4 degrees C, b.)decreases with decreasing temperature below 4 degrees C, c.)increases with decreasing temperature ...
December 8, 2006

Science
I'm having another problem. These multiple choice questions confuse me. Can you please help again. The density of seawater is either greater than freswater, increases with increasing depth in the oceans, changes with changing temperature, increases with increasing salinity...
December 8, 2006

Science
I'm going crazy! The heat necessary to change the state of water between a solid and a liquid is called the latent heat of vaporization, latent heat of solidification, latent heat of fusion, latent heat of liquefaction, or none of the above. I thought it was none of the ...
December 8, 2006

OCEANOGRAPHY HELP
Sediments composed of particles of one size are called ___________. I think it's well-sorted but am not sure. You are correct. See: http://72.14.253.104/search?q=cache:BtQzENSvQ4MJ:flightline.highline.edu/wmoses/Ocean101/OC101PowerPoints/Sediments.ppt+Sediments+%...
November 25, 2006

social studies
What is slash and burn method? in terms of farming? what is your question in relation to? Check this site. http://en.wikipedia.org/wiki/Slash_and_burn slash and burn (during indian times) is when they slashed the bark off of trees and then burned then burned the trees for ...
October 29, 2006

science
A science student drops a rok down a mine shaft. It takes 3 sec. for the rock to hit the bottom of the shaft , at what speed of the rock just before impact? 32 feet per second per second is the acceleration rate of earth. At the end of second 1 the speed is 32 feet per second...
October 24, 2006

science
a train is going 95mph you walk 5mph toward front of train. in relation to passanger seated on train how fast are you moving? The seated passenger is fixed in the same frame of reference as the train. Therefore the walking passenger has a relative velocity of 5 mph relative to...
October 18, 2006

physics
i thought i had the answer right, but i didnt! wat are the first few steps?? an elevator (mass 4850kg) is to be designed so that the maximum acceleration is .0680g. what are the maximum and minimum forces the motor should exert on the supporting cable? i know the answers but ...
October 1, 2006

physics
ab elevator (mass 4850kg) is to be designed so that the maximum acceleration is .0680g. what are the maximum and minimum forces the motor should exert on the supporting cable? i know the answers but dont know how to come up with the work! (5.08*10^4N and 4.43*10^4N) ...
October 1, 2006

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