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August 20, 2014

Homework Help: Science: Earth

Recent Homework Questions About Earth

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SOCIAL STUDIES
What are the three forces that change the shape of the land and what are the effects do they have on the earth? http://en.wikipedia.org/wiki/Erosion
Sunday, November 26, 2006 at 11:03am

Cont. English
Dimmesdale is not free since he does not live with his moral code, because he is concerned with society’s condemnation. He hides his secret of adultery, which is going against his moral code of honesty. Consequently, he is unable to relieve himself of his guilt, and for ...
Tuesday, November 21, 2006 at 1:45pm

physics question
I have a question about a problem regarding Newton's third law. a. An iron rod is held up by a magnet. The magnet is held up by a string (from a ceiling, let's say). Draw a free-body diagram for the magnet and a separate free-body diagram for the iron rod. For the rod ...
Tuesday, November 21, 2006 at 12:02pm

physics
a) You are sitting at the center of the back seat of a car without seat belts and friction is low. The car suddenly makses a right turn. Describe what happens to you. WHich of Newton's laws is applicable? The car would be goind straight before the turn so when it suddenly ...
Monday, November 20, 2006 at 4:56pm

chem
There are several exceptions to the octet rule found along the transition and rare earth metal sections. These exceptions are tied to the observed phenomenon that atoms are more stable if orbital systems are either whole or half filled. In other words, the electron ...
Sunday, November 19, 2006 at 2:06pm

please check over my work
A 2.5 kg stone is released from rest and falls toward earth. After 4s, the magnitude of its momentum is: My work: J=F*t =(F *t)= 24.5N * 4s F= 2.5 *9.81= 24.5 J=P P= 98kg m/s A sphere X, of mass 2kg, is moving to the right at 10m/s. Sphere Y, of mass 4 kg is moving to the left...
Saturday, November 18, 2006 at 1:09pm

Science
Which layers of the Earth can only be studied by indirect means? ( Layers being inner core, outer core, mantle, And Crust) inner core, outer core, mantle Yes, if you personally visited any but the crust you would be destroyed by the heat and pressure. Right I knew that. i just...
Friday, November 17, 2006 at 4:54pm

earth//space science
what is an inverse relationship? explain the relationship between the density of a planet and the distance the planet is from the sun "what is an inverse relationship? explain the relationship between the density of a planet and the distance the planet is from the sun.&...
Thursday, November 16, 2006 at 1:30pm

earth science
What are the names and symbols of the two elements found in all silicate minerals? http://en.wikipedia.org/wiki/Silicate After reading see if you think Oxygen and Silicon might be the answers
Tuesday, November 14, 2006 at 11:15pm

sience
Explain why condensation forms on a glass containing a cold drink? http://en.wikipedia.org/wiki/Condensatio​n Warm atmosphere around the glass causes the vapors in the air to turn to liquid. First, plot some of the data to get an idea of distances and scales, etc. Let&#...
Monday, November 13, 2006 at 6:33pm

Theology
How can free will be compatible with predestination, when they hold two different views of creaiton? Free will, that God created almost everything, and predestination, that he created everything. Free will and predestination are not compatible. The concepts are also ...
Monday, November 13, 2006 at 11:59am

science
how do jupiter's moons stay in orbit around jupiter They rotate around jupiter. If you rotate around an object you are accelerating toward it, even though the distance can stay the same. This so-called centripetal acceleration multiplied by the mass must equal the ...
Saturday, November 11, 2006 at 10:49am

Third Side, Reply to Jen
Hi Jen, I've seen the drawing. My site is down at the moment. Draw a line from Venus (either of the two positions) to the line Earth-Sun at right angles. Let's call the distance Earth Venus d. Then you have a right angle triangle with a hypotenuse d, the line that ...
Saturday, November 11, 2006 at 10:07am

third side (picture attached)
I have already asked this in another thread. Here is more explanation: The radius of earth's orbit is 1.5 * 10^8km & the radius of venus's orbit is 1.1 * 10^8 km. We need to find out the distance from earth to venus for both positions of venus. A picture is uploaded ...
Friday, November 10, 2006 at 6:40pm

third side
If one angle and two sides of a triangle are given, how to find the third side? This is for solving a 9th grade geometry problem of finding the distance from earth to venus You can use a standard formula for the side of the triangle that must be mentioned somewhere in your ...
Friday, November 10, 2006 at 4:25pm

Physics
A loaded elevator with very worn cables has a total mass of 2600 Kg , and the cables can withstand a maximum tension of 2.90×104 N . A) Apply Newton's second law to the elevator and find the maximum upward acceleration for the elevator if the cables are not to break...
Thursday, November 9, 2006 at 2:44pm

for Margie &/or GuruBlue
What on earth IS the main question? I have been trying for 2 days to access it and all I get is "Gateway Timed out." If it was simply how to use the word venir, I see you have that answer! Here is an explanation of 504: http://www.checkupdown.com/status/E504.h​tml
Wednesday, November 8, 2006 at 10:15pm

Health
I am confuzzled with my health hw. It is only yr8 and i cant do it! its only 7 paragraphs and i shall explain it. Paragraph1. Question. Define anger, agression and give examples of both. Describe my own anger and what happens mentally and emotionally. I know what to do and ...
Tuesday, November 7, 2006 at 6:07am

physics
A 1-kg block is lifted vertically 1m by a boy. The work done by the boy would be one jule or would no work be done. I'm confused, I thought lifting wasn't considered work. The work done is actually about 9.81 joules. Think of gravity pulling on the block as an ...
Monday, November 6, 2006 at 8:03am

Physics (please check)
A 6.0kg block is released from rest 80m above the ground. When it has fallen 60m its kinetic energy is: I got 1200J as my answer mgh=(6.0*9.81* 60m)=3531.6 PE + KE= (ME + KE) 3531.6 + KE= (6.0*9.81*80m) KE= 1177.2 is that right A 6.0 Kg block is thrown up from a point 20m ...
Sunday, November 5, 2006 at 8:02pm

Physics newton
A rocket weighs 1 x10^7 N while on the surface of the earth. The ignition of its engines results in a lift off force of 1.5 X 10^7 N a) what is the mass of the rocket. b) what is its acceleration at lift -off c)How fast will it be moving if it acceleartion at this rates for 10...
Sunday, November 5, 2006 at 4:04pm

Geography
if you traveled south from South America, What is the next continent you would reach? Do you have a globe you can look at? If not, do you know which continent is located at the very southern-most point of the earth? if you traveled south from south america,waht is the next ...
Tuesday, October 31, 2006 at 4:56pm

Physics, please help
Hello, I don't know how about to answering this question: work out the problem of a ball of mass m that falls a distance h from rest. It hits the floor and rebounds to its starting height. (a) What total time ie required for the motion? (Neglect the time of contact with ...
Tuesday, October 31, 2006 at 9:12am

physics
a marble is dropped from the top of a skyscraper. Is the work done by earths gravitational force on the marble equal to, smaller than or larger them that done by the marbles gravitational force on earth? Why? newtons 3rd law: force on marble due to earths grav. field is equal ...
Monday, October 30, 2006 at 9:38pm

science
During space flight, astronauts often refer to forces as multiples of the force of gravity on Earth's surface. What does a force of 5g mean to an astronaut? If Earth were twice as massive but remained the same size, what would happen to the value of g? http://hyperphysics....
Saturday, October 28, 2006 at 4:28pm

science
a satellite is in geosynchronous orbit 36,000 km above earth. describe how you would fond the speed of this satellite.\ http://en.wikipedia.org/wiki/Geosynchron​ous_orbit
Saturday, October 28, 2006 at 1:25pm

earth science
how do we find the mass of an object? mass=density * volume
Thursday, October 26, 2006 at 9:43pm

science
wat is the metric order....u know.....hecto base units that order? megameter kilometer hectometer dekameter base unitmeter decimeter centimeter millimeter micrometer kilometer km 1,0000 .62 mile hectometer hm 100 328.08 feet dekameter dam 10 32.81 feet meter m 1 39.37 inches ...
Wednesday, October 25, 2006 at 10:07pm

Earth Science
How are distances in space measured? What is the nearest star to Earth beyond the sun and how far away is it???? http://en.wikipedia.org/wiki/Light_year http://en.wikipedia.org/wiki/Alpha_Centu​ri why does Jupiter spin so fast while it's do big
Wednesday, October 25, 2006 at 9:40pm

Earth Science
What is circumpolar, when it is visible and what are two circumpolar constellations http://en.wikipedia.org/wiki/Circumpolar​_constellation http://en.wikipedia.org/wiki/Circumpolar​
Wednesday, October 25, 2006 at 9:39pm

Earth Science
The (blank) of these common rocks grow large because of the (blank) rate of cooling. Wow thats vague, crystals, slow or fractures, rapid ??? hmmm Variences, differential??nah Pumice rocks greatly expand as they shoot out of the volcano. The (Crystals)of these common rocks grow...
Wednesday, October 25, 2006 at 1:55am

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...
Tuesday, October 24, 2006 at 9:43pm

Earth Science
I need help with igneous rocks and the rock cycle. Is there a web site that will help me. One question is When magma cools below Earth's surface, it forms __________-grained, _________ igneous rocks. fine grained for your other word read: http://en.wikipedia.org/wiki/...
Tuesday, October 24, 2006 at 6:56pm

Earth physics I think
Keplerian motion/Analemma Does the earth actually alter speed or is it a result of the earth being closer to the sun at some points in its eliptical orbit or BOTH? Additionally does anyone know where the value of the earth/sun analemma can be found. I read it is in a nautical ...
Thursday, October 19, 2006 at 11:28am

HELP WIT A QUESTION
What nees to be done to correct this sentence? Do you know who said,"Genius iS a an immense capacity for hard work"? A. The sentence is correctly punctuated. B. Place the question mark inside the final quotation mark. C. Change the comma to a colon. Please read this ...
Wednesday, October 18, 2006 at 9:36am

hmmmmm...........
How can moving contiental plates change the surface of earth http://www.google.com/search?q=moving+co​ntinental+plates&start=0&ie=utf-8&oe=utf​-8&client=firefox-a&rls=org.mozilla:en-U​S:official Good websites linked here. =) what plate is iceland on how can ...
Tuesday, October 17, 2006 at 7:27pm

physics
At what altitude above the Earth's surface would your weight be three-fifths of what it is at the Earth's surface? Assume re = 6.371 10^3 km. If weight decreases as the inverse square of distance, then 3/5= (re/r)^2 where r is the distance from the center of earth to ...
Monday, October 16, 2006 at 7:09pm

Phyisics
A spy satellite is in circular orbit around Earth. It makes one revolution in 6.02 hours. How high above Earth's surface is the satellite Use keplers law, comparing the moon period and distance from Earth to the Satellite. There are other ways of doing this.
Monday, October 16, 2006 at 6:50pm

science
I see others have asked the same question but I do not understand the answers given. Question is to do with zinc solid and dilute sulphuric acid. What substance is left? I see by other posts that Bob Pursley answered this question. I haven't seen his answer but here is a ...
Sunday, October 15, 2006 at 12:21pm

GEOGRAPHY / SCIENCE
The theory that addressed the apparent ability of landmasses to move through the crust is called Continental Drift? I think this is the answer but not sure. Please help Yes, You're right. The Continental Drift theory is based on plate tectonics. http://kids.earth.nasa.gov/...
Sunday, October 15, 2006 at 11:21am

Chemistry
What is the famous isotope used in archeological dating? carbon 12 I thought it was carbon 14 yes carbon 14-- made an error But if you knew, why are you asking these questions? I need reaasurance, so when I have a test I know the exact answer C-14 is ONE of the radioactive ...
Sunday, October 15, 2006 at 10:22am

Earth Science (Climates)
The Atacama desert in northwest Chile is located on the west side of the Andes and at same latitude in Chile, the east side of the Andes is part of the tropical rain forest. In southern Chile, there is a lot of snow and rain on the west side of the Andes and desert conditions...
Friday, October 13, 2006 at 11:24pm

what if.....
What would happen if the earth's angle of inclination was 45 degrees instead of 23 degrees? It would cause it to become colder..... The change would be more complex than that. The poles would get more sunlight during various seasons, leading to greater melting at the poles...
Friday, October 13, 2006 at 11:22am

science
advanteges and disadvanteges of fossil fuels Check this site. http://home.clara.net/darvill/altenerg/f​ossil.htm advantages easy to get energy from not expensive to get energy from disadvantages pollutes the atmosphere with carbondioxide which leads to green house effect...
Thursday, October 12, 2006 at 4:09pm

phys
a spaceship travels with a speed of 0.7c as it passes by the Earth on its way to a distant star. The pilot of the spaceship measures the length of the moving ship as 50m. Determine its length as measured by a person on Earth. Answer in units of m. for this question, do I just ...
Thursday, October 12, 2006 at 12:05am

English
I know that no one is here to do my homework but I am in quite a pickle today. I really need someone to give me a intro that I can start off on. Or even a sentance. I am really confused right now. a sentance is all i ask. Here is a sentence: Shakespeare used time to bring ...
Wednesday, October 11, 2006 at 6:05pm

English
I am writing an essay on "No Exit" by Jean-Paul Satre. The question is: How does the author's manupulation of time contribute to the effectiveness of the work as a whole. Do not just merly summerise the plot. I know that time in Hell is suspended/ halted. HOW is ...
Wednesday, October 11, 2006 at 3:28pm

GLOBE/GEOGRAPHY HELP
Rotate the Earth using the arrows on the globe that show the direction of rotation. As viewed from the North Pole, what direction is the Earth spinning? clockwise or counter-clockwise? I suggest you do this exercise in class, since that globe apparently has arrows that show ...
Wednesday, October 11, 2006 at 3:07pm

phys
a spaceship travels with a speed of 0.7c as it passes by the Earth on its way to a distant star. The pilot of the spaceship measures the length of the moving ship as 50m. Determine its length as measured by a person on Earth. Answer in units of m. for this question, do I just ...
Tuesday, October 10, 2006 at 9:46pm

phys
The proper length of one spaceship is 5 times that of another. The two spaceships are travelling in the same direction and, while both are passing overhead, an Earth observer measures the two spaceships to be the same length. If the slower spaceship is moving with a speed of 0...
Tuesday, October 10, 2006 at 6:54pm

science
what is a earthquake look it up in a dictionary science is hard but hang in there If you want to read about earthquakes, an encyclopedia can give much information. Look on plate tectonics. The core of the earth is very hot and consists of molten magma. There are a number of &...
Tuesday, October 10, 2006 at 12:10pm

help help help
The asteroid belt between Mars and Jupiter consists of many fragments (which some space scientists think came from a planet that once orbited the Sun but was destroyed). (a) If the center of mass of the asteroid belt is about 2 times farther from the Sun than the Earth is, how...
Monday, October 9, 2006 at 8:37pm

Shakesphere
In the novel; Twelfth Night A quote is stated: "And thus a whiligig if time brings in his revenges" I am to write an essay on this. I have put some ideas together, yet I am unable to create an intro. Could you help by giving me a few hints on how to start an essay ...
Sunday, October 8, 2006 at 11:46am

Science / Geography
Losing Your Bearings 1. Begin journey at 40 degrees N by 77 degrees W. 2. Travel 4200 miles with a compass bearing of 130 degrees. 3. Travel 2800 miles with a compass bearing of 180 degrees. 4. Travel 5250 miles with a compass bearing of 90 degrees. 5. Travel 1750 miles with a...
Saturday, October 7, 2006 at 9:18pm

Physics
A rocketship, travelling away from earth with a speed of 0.8c, sends regular radio signals which are recieved on Earth every 45.2 min. According to the rocketship astronauts, how frequently are the signals being sent? I really need help. Its a basic question yet har for me. ...
Saturday, October 7, 2006 at 11:24am

the earth
name the four layers of the earth in order from the outside to the center of the earth This site will not only give you the layers but a picture and a discription. http://volcano.und.edu/vwdocs/vwlessons/​lessons/Earths_layers/Earths_layers2.htm​l crust, mantle, ...
Thursday, October 5, 2006 at 6:51pm

science
what steps do you think can be taken to reduce the harmful effects of human activities on biogeochemical cycles? i dont know What steps do you think can be taken to reduce the harmful effects of human activities on biogeochemical cycles? The first major step to take would be ...
Thursday, October 5, 2006 at 6:02pm

Geography
Why is it unlikely to find earthquakes at depths greater then 300km? (something to do with the athenosphere) According to the principle of isostasy, what will happen to the elevation of a mountain range in the early stages of erosion? Why are continents unlikely to be ...
Thursday, October 5, 2006 at 12:59am

earth science i need help
what is the relationship between the focus and the epicenter of an earthquake? http://www.sciencecourseware.org/Virtual​Earthquake/ earths early atmosphere formed during the early archean era. Which gas was generally absent fro mthe atmosphere at this time
Wednesday, October 4, 2006 at 9:59pm

Geology
What do you call Ignous rocks that form under the surface? Mary, igneous rocks are called fire rocks-underground,they are formed when the melted rock, called magma, deep within the earth becomes trapped in small pockets.As these pockets of magma cool slowly underground, the ...
Wednesday, October 4, 2006 at 9:27pm

Science
Which of the rock-forming mineral groups makes up the largest group of minerals in the Earth's crust? Look here for your answer. http://www.google.com/search?hl=en&lr=&i​e=ISO-8859-1&q=minerals+earth%27s+crust&​btnG=Search http://en.wikipedia.org/wiki/...
Tuesday, October 3, 2006 at 9:24pm

Earth Science
What commonly used metal is extracted from hematite? There are a number or iron ores. Hematite is one of them.
Tuesday, October 3, 2006 at 9:15pm

earth science
which term is best defined as a measure of the amount of space a subtance occupies? volume It looks like you have answered your own question. If it is three dimensional, it is volume. However, if it is two dimensional, it is area. I hope this helps a little more. Thanks for ...
Tuesday, October 3, 2006 at 10:50am

physics
a person stands on a bathroom scale in a motionless elevator. when the elevator begins to move, the scale briefly reads only .75 of the persons regular wieght. calculate teh acceleration of the elevator, and find the direction of acceleration.(ans 2.5 m/s^2, and down) confused...
Monday, October 2, 2006 at 9:38pm

Earth Science
What are 3 examples of graphing natural phenomenas? How would you predict their future occurences? One could graph the occurance of celestial bodies, such as the moon, sun, etc. Or graph the location of Vega, by hour. Or graph comets. You could graph rainfall by month over a ...
Monday, October 2, 2006 at 6:38pm

physics
"Free-fall" Assigning Variables: Acceleration: If an object is going down: a = __________ If an object is thrown up: a = _________ If an object is dropped: a = _________ If an object is launched: a = _________ If yall could just give me the equations or variables, I ...
Sunday, October 1, 2006 at 1:51pm

Filtration
Problem: In each of the following situations, what type of filtration device would you use? A. Remove powdered decolorizing charcoal from 20mL of solution? My answer: Filter Aid or Celite (diatomaceous earth) B. Collect crystals obtained from crystallizing a substance from ...
Saturday, September 30, 2006 at 9:25pm

Physics
Note: I am in Alegebra-based Physics. You have landed on an unknown planet, Newtonia, and want to know what objects will weigh there. You find that when a certain tool is pushed on a frictionless horizontal surface by a 12.2 N force, it moves 16.3 m in the first 2.30 s, ...
Saturday, September 30, 2006 at 3:16pm

Algebra
A satellite is in orbit around the earth, traveling at a rate of 85.4 minutes per orbit. a space shuttle enters the same orbit, traveling at a rate of 93.6 minutes per orbit. the shuttle is .25 orbits behind the satellite, traveling toward it. Let x be the # of orbits the ...
Thursday, September 28, 2006 at 7:59pm

earth science
How would you set up a simple experiment to test whether salt crystal growth is affected by temperature It might help if you were clear on how an experiment is set up. An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter...
Tuesday, September 26, 2006 at 9:27pm

Physics (as always)
A rocket moves upward, starting from rest with an acceleration of 29.4 m/s^2 for 4.00 s. It runs out of fuel at the end of the 4.00 s but does not stop. How high does it rise above the ground? Would I have to set up two seperate equations for this? one for the acceleration due...
Sunday, September 24, 2006 at 10:34pm

Geography
What 5 themes do geographers use to study the earth http://www.funsocialstudies.learninghave​n.com/articles/fivethemes.htm
Saturday, September 23, 2006 at 6:15pm

natural philosphy
Explain Platos conception of the cosmos, emphasising the ways in whish his thought represents a a synthesis of pre-socratic thinkers and the ways in which his thought reflects his idealist epistemological stance. Since this is not my area of expertise, I searched Google under ...
Saturday, September 23, 2006 at 4:31pm

Physics
An earth satellite moves in a circular orbit with an orbital speed of 5800 m/s. Find the time (expressed in seconds) of one revolution of the satellite. Find the radial acceleration of the satellite in its orbit. I think we need to know the radius of the earth and the ...
Friday, September 22, 2006 at 3:03pm

physics
What does a 15 kg mass weigh on Earth? need assistance in setting up problem to get answer in Newtons and in pounds. thanks Weight in Newtons = M g =(Mass in kg) x (acceleration of gravity in m/s^2) The acceleration of gravity on Earth is g = 9.8 m/s^2. Do the multiplication ...
Thursday, September 21, 2006 at 12:13am

physics
Gravity on the moon is only 1/6 as strong as gravity on earth. What is the weight of a 20 kg object on the moon and on earth? I have to find it in Newtons on earth and on the moon. WeightinNewtons= mass* gravity field on earth, the gravity field is 9.8N/kg, and on the moon, it...
Wednesday, September 20, 2006 at 7:50pm

science
Why is the earth round? Why is the water blue? Why doesn't the water fall off the earth? the earth is not perfectly round, water is blue because particles reflect blue light. The water cycle, type that in and google it to find out for yourself. I'd give u the link to ...
Wednesday, September 20, 2006 at 3:07pm

Proofread
hi can you profread this for me? None of them were looking forward to the task ahead. First, Lori distributed the shovels; one to each person. The shovels were heavy, long-handled brutes that promised to feel like iron weights before the work was half over. Next, Lori paced ...
Wednesday, September 20, 2006 at 10:48am

Physics
You have landed on an unknown planet, Newtonia, and want to know what objects will weigh there. You find that when a certain tool is pushed on a frictionless horizontal surface by a 12.2 N force, it moves 16.3 m in the first 2.30 s, starting from rest. You next observe that if...
Tuesday, September 19, 2006 at 11:25pm

Physics
A rocker acceleratess up ar 5m/s/s for 10s and at which point the fuel is exhusted, and then the rocket continues upwards in free fall. a)How high does teh rocket riseb)What total time does the rocket spend in the air? b) What total time does the rocket spend in the air? The ...
Tuesday, September 19, 2006 at 6:05pm

Physics
I have no idea!!! A river flows due south with a speed of 2.30 m/s. A man steers a motorboat across the river; his velocity relative to the water is 4.50 m/s due east. The river is 900 m wide. In which direction should the motorboat head in order to reach a point on the ...
Monday, September 18, 2006 at 5:31pm

Physics
I have posted this one before, but the help I received went over my head... Firemen are shooting a stream of water at a burning building. A high-pressure hose shoots out the water with a speed of 21.0 m/s as it leaves the hose nozzle. Once it leaves the hose, the water moves ...
Monday, September 18, 2006 at 5:30pm

physics
Given that the distancef rom Earth to the Moon is 3.8 x 10^8 m, that the Moon takes 27 days to orbit Earth, and that the mass of the Moon is 7.4 x 10^22 kg, what is the acceleration of the Moon and the size of the attractive force between Earth and Moon? Use v = (2pir)/T, ...
Monday, September 18, 2006 at 2:20pm

science
An area in your state has been flooded due to heavy rains. How might scientists from the three main branches of science interact in their study of the flood, its effects, and how future flooding might be controlled? OK, I will bite: What do you think the three main branches of...
Sunday, September 17, 2006 at 7:08pm

Physics
A river flows due south with a speed of 2.00 m/s. A man steers a motorboat across the river; his velocity relative to the water is 4.20 m/s due east. The river is 800 m wide. What is the magnitude of his velocity relative to the earth? got it....4.65 m/s What is the direction ...
Saturday, September 16, 2006 at 4:07pm

Chemistry
How does Significant Figures work? If i had a number: 1,007,000 is that with 4 sig figs or 7 sig figs? I checked 5 different resources and gotten conflicting answers. Help! The answer will depend on what's being measured and how it's being measured. If that number were...
Thursday, September 14, 2006 at 9:32pm

science(8th Grade)
List three things aboout Minerals of the Earth Crust Author Holt Rinehart & Winston
Wednesday, September 13, 2006 at 8:29pm

chemistry
which is saltier the gulf of mexico or pacific ocean http://www.windows.ucar.edu/tour/link=/e​arth/Water/images/salinity_big_gif_image​.html&edu=high The more orange, the higher salinity
Tuesday, September 12, 2006 at 7:38pm

Essay
I need some insight please for my arugementive essay about what makes people American. I was thinking that my main points could be culture, ciztenship, and knowing who you are. Would these be good points for my argumentive essay? OK, then your essay focuses on Native Americans...
Sunday, September 10, 2006 at 4:09pm

Physics
A tennis ball on Mars, where the acceleration due to gravity is 0.379 of a and air resistance is negligible, is hit directly upward and returns to the same level 9.50 later. How fast was it moving just after being hit? The formula is the same as we use on earth, but the ...
Sunday, September 10, 2006 at 2:12pm

science
How many times did Earth orbit the sun between 140 CE and 1543 , how do you figure this up???? If you know how many years that is, the earth orbits the sun once a year. I hope this helps. Thanks for asking. How many years is 140 Ce to 1543 ?? We need to know 10 different kinds...
Tuesday, September 5, 2006 at 8:18pm

science
how the mountain grows? I only know of two ways that a mountain grows. One is if it is volcanic, growing on its own ejection of lava. Another would involve two of earth's tectonic plates exerting pressure on each other, pushing the mountain up. http://en.wikipedia.org/wiki...
Saturday, September 2, 2006 at 9:35am

GYRO COMPASS
A gyro compass is affected by 2 errors. Speed error and latitude error. I have no idea why this should be. Can anyone offer an explanation. Thank you, Mike. Since this is not my area of expertise, I searched Google under the key words "gyro compass error speed latitude&...
Friday, September 1, 2006 at 3:25pm

Sorry, Here's another question plus work
1. Gold, has a mass of 19.32g for wach cubic centimeter of volume, is most ductile metal and can be pressed into a thin leaf or drawn out into long fiber. -If a sample of gold, with a mass of 27.63g is pressed into a leaf of 1.000micometers thickness, what is the area of the ...
Thursday, August 31, 2006 at 3:47pm

earth science
What are two lines of evidence that indicate that earth is rotating? What is the motion of the stars at night? What does the Sun do in the day? i want to seach features of the earth in its inner structure
Wednesday, August 30, 2006 at 12:31pm

college algebra
The diameter of the Earth is approximately 7,920 miles. Given that the circumference of a circle is pi times its diameter, which statement best describes the length of a trip from Washington to Masdagascar that is approximately 8,600 miles long? a.One fourth of the ...
Tuesday, August 29, 2006 at 1:54am

math
The diameter of the Earth is approximately 7920 miles. Given that the circumference of a circle is _ times its diameter, which statemnt best describles the length of a trip from Washington to Madagascar that is approximately 8600 miles long? Your question is lacking the ...
Friday, August 25, 2006 at 12:45pm

earth science check?
17. the spectacular exposures of flat-lying sedimentary rocks in the _________ provide evidence of rapid deposits from a great Flood. ADIRONDACKS ALPS GLACIERS X GRAND CANYON grand canyon am i right? Yes. You're right.
Sunday, August 20, 2006 at 5:44pm

earth science am i right?
am i right 19. According to the law of __________, only a worldwide flood with its vast complex of sediment-saturated currents would produce horizontal superimposed layers of materials, thus forming a great series of sedimentary strata formed in various parts of the earth. X ...
Sunday, August 20, 2006 at 5:43pm

Tidal Heights/Barometric Pressure
What barometric pressure are tidal height predictions based on? Tidal height has nothing to do with barometric pressure. Barometric pressure is a reading that is measured. Now if you are wondering what the "standard" pressure is, it is the average barometric pressure...
Friday, August 18, 2006 at 4:10am

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