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September 15, 2014

Homework Help: Science: Earth

Recent Homework Questions About Earth

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Science
We are studying energy my questions What happens to the momentum of a car when it comes to a stop? The momentum is transfered to the Earth. Momentum is always conserved. What happens to the momentum of a car when it comes to a stop?
Tuesday, January 9, 2007 at 5:35pm

physics
A satellite has a mass of 100 kg and is in an orbit at 2.00*10^6 m above the surface of the Earth (a) what is the potential enegry of the satellite at this location?(b) what is the magnitude of the gavitational forece on the satellite? a) Since the weight drops somewhat as a ...
Monday, January 8, 2007 at 4:54pm

physics
Given that the Moon's period about the Earth is 27.32 days and the distance from the Earth to the Moon is 3.84*10^8 m estimate the mass of the Earth. Assume the orbit is circular. Why do you suppose your estimate is high? The force of attraction= centripetal force G MeMm/d...
Monday, January 8, 2007 at 4:51pm

physics
Use the table of 7.3 to find the point between the Earth and the Sun at which an object can be placed so that the net gravitational force exerted on it by these two objects is zero. TABLE 7.3 <--- for the earth and the sun Body
Monday, January 8, 2007 at 4:42pm

physics
1. the average distance separating the Earth and the Moon is 384 000 km. Use the data table 7.3 to find the net gravitational force the eath and the moon exerts on a 3.00*10^4-kg spaceship located halfway between them. TABLE 7.3 <--- for the moon and the earth Body
Monday, January 8, 2007 at 4:37pm

Physics
Calculate the force of gravity on a spacecraft 19200 km (3 earth radii) above the Earth's surface if its mass is 1600 kg. Hint: At three earth radii from the surface of the Earth, the gravity force (weight) of the spacecraft will be reduced to (1/4)^2 = 1/16 of the weight ...
Sunday, January 7, 2007 at 11:43pm

MsSue
thank you for helping me religion is really hard to understand especially if your not from it or even have studied it for long. Now what are some cultural influences for having hinduism vital to the region it originates from. and what does it mean to liberate from earthly ...
Sunday, January 7, 2007 at 10:29pm

writeacher
thankyou for all your help that your doing i hope that i'm taking much of your time till what time your available i will greatly appreciate all your help. i don't know how to repay you and everyone else that has helped me. i will work on the suggestion that you ...
Sunday, January 7, 2007 at 7:24pm

physics
A 1.5 kg snowball is fired from a cliff 12.5m high with an inital velocity of 14 m/s directed 41 degrees above the horizontal. a) how much work is done on the snowball by the gravitaitonal force during its flight to the flat ground below the cliff? b) what is the change in the...
Thursday, January 4, 2007 at 6:57pm

physics
A small block of mass m can slide along the frictionless loop-the loop. The block is released from rest at point P, at height h =5R above teh bottom of the loop. How much work does the gravitational force do on the block as teh block travels from point P to a) point Q (which ...
Thursday, January 4, 2007 at 6:51pm

English
What obstacles might you encounter on the path to success? Deaths, put downs, bad grades..ect. Geez. What obstacles might you meet if you asked your dad to buy you a new convertible, a Pontiac Sunbird? Is it possible he might say no? What thoughts do you have on obstacles ...
Wednesday, January 3, 2007 at 4:55pm

Science
On the main sequence, what type will have life spans of about ten billion years? I took Earth Science last year so although I do not have them in front of me, I believe the are in the Earth Science Reference Tables (ESRT).
Tuesday, January 2, 2007 at 4:39pm

Physics
You drop a 2 kg textbook to a friend who stands on the ground 10m below the testbook with outstreatched hands 1.5m above the ground. a) how much work W_g is done on the textbook by the gravitational force as it drops to your friend's hands? b)What is the change in the ...
Tuesday, January 2, 2007 at 3:54pm

Geography
Hi Oprah here Just wanna know what would be a circulating current of warmer materal ( such as magma ) ??? Help please Thanks I'm not quite sure what you are asking. Is the material molten earth, water or something else? Since this is not my area of expertise, I searched ...
Tuesday, January 2, 2007 at 9:02am

Geography
Hello everyone I'm wondering if any one would help me with my Geography homework.. It is a crossword and I need to complete it What is the name of a circulating current of warmer material (such as magma) What is the name of : where magma erupts through the crust The name ...
Tuesday, January 2, 2007 at 5:41am

Solar system
According to the theory of gravitation, the earth must be continually “falling” toward the sun. If this is true, why does the average distance between earth and sun not grow smaller? Without gravity, the Earth would go in a straight line. It falls toward the Sun ...
Monday, January 1, 2007 at 3:36pm

Solar system
According to the theory of gravitation, the earth must be continually “falling” toward
Sunday, December 31, 2006 at 6:35pm

apollo 11
Why was the apollo 11 space mission a giant leap for America? Apollo 11 was the first manned mission to land on the moon. http://en.wikipedia.org/wiki/Apollo_11 From the Wikkipedia link At 2:56 UTC on July 21, six and a half hours after landing, (Niel)Armstrong made his ...
Sunday, December 31, 2006 at 6:21pm

Science
The sun, moon and planets all follow approximately the same path from east to west across the sky; none of them is ever seen in the far northern or far southern sky. What does this suggest about the arrangements of these members of the solar system in space? Think of terms of ...
Sunday, December 31, 2006 at 5:16pm

Today is my.......
Today is my birthday! I wonder what is my HOROSCOPE SIGN? Is it Capricorn? HAPPY BIRTHDAY KAVERI!!!!!!!! WHEN I SAY HAPPY YOU SAY BIRTHDAY HAPPY BIRTHDAY HAPPY BIRTHDAY HAPPY BIRTHDAY TO YOU , HAPPY BIRTHDAY TO YOU , HAPPY BIRTHDAY DEAR KAVERI HAPPY BIRTHDAY TO YOU......... ...
Sunday, December 31, 2006 at 3:18pm

religion,
Can someone help me. I've done 4 definitions of terms. But i don't know the last one can someone check what i have and then explain to me the last one. The religion i am studying is Hinduism. Terms: Karma-(My answer)The Buddhist's judgment, which determines at ...
Friday, December 29, 2006 at 10:21pm

Physics
How many years would it take the planet to orbit the sun. How do you calculate. All I have is, that the planet is 97 times farther from sun than earth or 97 Astronomical units Using Kepler's Law you find that the anser is 97^(1.5) years. You can estimate this without using...
Friday, December 29, 2006 at 1:49pm

Physics
How do you calculate. How many years would it take the planet to orbit the sun. All I have is, that the planet is 97 times farther from sun than earth or 97 Astronomical units Use Kepler's Third Law. If you have never heard of it, read http://csep10.phys.utk.edu/astr161/...
Friday, December 29, 2006 at 1:47pm

religion help!
I've gone to the websites that i've received but i'm still not understanding the religion on hinduism. I have to answer 3 questions only then write a paper. can anyone help me. where i can actually find these answers at least. Questions are: (1) Considering that ...
Friday, December 29, 2006 at 3:18am

Physics
An object is dropped from rest from the top of a 400 m cliff on Earth. If air resistance is negligible, what is the distance the object travels during the first 6s of its fall? a)30m b)60m c)120m d)180m e)360m I got a) as my answer. I used x-x_i = v_i * t +1/2at x-400= 0(6) + ...
Thursday, December 28, 2006 at 8:24pm

english help!!?!?
Mom smiles sweet as cold cash at each salesman in the carpet & dapery store where they offer my sister & me white mints fat as mushrooms while we walk up and down the aisles trying to make earth match the sky. What does the narrator mean when she says “make earth match ...
Tuesday, December 26, 2006 at 7:52pm

Environmental Science
How does lichens contribute to primary succession? BSCI 124 Lecture Notes Undergraduate Program in Plant Biology, University of Maryland LECTURE 34 - PLANT SUCCESSION I. Plant succession - a series of predictable changes over time in the kinds of plants growing in an area * A...
Friday, December 22, 2006 at 11:13pm

Environmental Science
The phosphorus, carbon, and nitrogen cycles are termed biogeochemical cycles- bio meaning "living"; geo for the earth (soil); and chemical referring to matter changing form. Explain why this term is appropiate. (I need a short answer)
Friday, December 22, 2006 at 10:45pm

Physics
How would a physics expert respond to the following suggestions made by three airline executives? Write a script of the expert's response for performance in front of the class. Airline Exectutive A: Since the earth rotates from west to east, we could operate 'static ...
Wednesday, December 20, 2006 at 2:51pm

poem?
Is this a blank verse?? THOU still unravish'd bride of quietness, Thou foster-child of Silence and slow Time, Sylvan historian, who canst thus express A flowery tale more sweetly than our rhyme: What leaf-fringed legend haunts about thy shape Of deities or mortals, or of ...
Tuesday, December 19, 2006 at 4:18pm

Silent Night in Cheyenne
For anyone interested in Native American, here is what is sung to the tune of Silent Night. Pavetaa'eva nehe'xoveva Tsexho'ehnese ho'eva, Jesus Vo'estanevestomanehe. Ehvo'estanetsehestaotsehoo'o Tsexho'eotsestomotahaetse Vo'...
Monday, December 18, 2006 at 10:40am

CHEM
in addition to previous Q: for eg: why is the oxidation state (#) of Ca in CaH2 "+2"? According to a p.table I have here +2 is the only oxidation # for Ca...but how is that figured? One other eg: the oxidation state (#) of the maganese atom in KMnO4.6H2O is "+7&...
Thursday, December 14, 2006 at 1:34am

science
Look at the picture on the immediate left here: http://en.wikipedia.org/wiki/Earth's​_magnetic_field Also: http://image.gsfc.nasa.gov/poetry/magnet​ism/magnetism.html HOW IS THE EARTH'S MAGTISM USEFUL thanks it helped me alot!!!!!!!!!!!
Tuesday, December 12, 2006 at 8:47pm

science
how is the earth's magnetism useful It provides a navigation mark for hikers and sailors.
Tuesday, December 12, 2006 at 7:00pm

oceanography
1. How much of the total water at earth's surface is fresh water? 2. Of all the freshwater at the earth's surface, what percent is found as ice and glaciers? 3. What percent of all freshwater is groundwater? 4. What percent of the rainfall that falls on continents is ...
Tuesday, December 12, 2006 at 1:40pm

drbob222,math
I've written back for the one i'm having trouble with of the previous in the previous message. Another question is that I want to verify doesn't this problem refer to solving. It is estimated that the Earth is losing 4000 species of plants and animals every year. ...
Tuesday, December 12, 2006 at 1:04am

drbob222,math
Am going correct with this one. It is estimated that the Earth is losing 4000 species of plants and animals every year. If S represents the number of species living last year, how many species are on Earth this year? S-4000=1 S=1+4000 S=4001 of species we have on this earth ...
Monday, December 11, 2006 at 8:03pm

drbob222,math
Am going correct with this one. It is estimated that the Earth is losing 4000 species of plants and animals every year. If S represents the number of species living last year, how many species are on Earth this year? S-4000=1 S=1+4000 S=4001 of species we have on this earth ...
Monday, December 11, 2006 at 8:03pm

math,algebra
How do I even write an equation for this problem all i need someone to show me how to get an equation so i can solve it. It is estimated that the Earth is losing 4000 species of plants and animals every year. If S represents the number of species living last year, how many ...
Monday, December 11, 2006 at 7:30pm

SCIENCE
WHAT HAPPENS IF EARTH'S MINERALS ARE USED UP? Will more grow or will there be no more Some minerals are being formed all the tme; others are not and will die out, so to speak, or be redustributed and any one site will be too small to pay to mine. Personally, I doubt that ...
Monday, December 11, 2006 at 7:08pm

sience
Will we ever run out of air? Air is stuck to the planet by gravity, it won't leave. Two things are adding to the air all the time too, the planet is always releasing gasses from volcanoes and volcanic vents, and there are some meteors that are mostly ice that evaporate ...
Saturday, December 9, 2006 at 10:23am

Social Studies
I need to locate a map that will clarify latitude and longitude as it is need for Africa Climate Region Might I suggest downloading google earth at: http://earth.google.com/download-earth.h​tml
Wednesday, December 6, 2006 at 10:32pm

English (Hamlet)
I need help identifying 2-3 symbols in Hamlet's final soliloquy, and what they could represent. "How all occasions do inform against me, And spur my dull revenge! What is a man, If his chief good and market of his time Be but to sleep and feed? a beast, no more. Sure...
Wednesday, December 6, 2006 at 7:22pm

Physics
A 70.0 kg base runner begins his slide into second base while moving at a speed of 4.0 m/s. The coefficient of friction between his clothes and Earth is .70. He slides so that his speed is zero just as he reaches the base. How much mechanical energy is lost due to friction ...
Tuesday, December 5, 2006 at 5:28pm

Logic (quick yes or no question)
quick yes or no question Is the sun the center of the universe or the earth the center? Neither. The sun is the center of the solar system. Each individual point can be considered the center of the observable universe. The wrote answer of course is no, neither are the center ...
Thursday, November 30, 2006 at 9:23pm

Social Studies
What are the nine types of landforms? please help! This site is excellent. http://gpc.edu/~pgore/Earth&Space/landfo​rms.html
Thursday, November 30, 2006 at 2:10pm

science
how does a metamophic rock form. http://www.cdli.ca/CITE/rocks_metamorphi​c.htm http://gpc.edu/~pgore/Earth&Space/metamo​rphic-notes.html
Wednesday, November 29, 2006 at 9:56pm

physics
i dont understand the projectile motion...my teacher said...it's a motion of a body confined to a vertical plane, perpendicular to Earth's surface... I dont get it, can anyone explain to me clearly???? plzzzzz....THX!!!! If your teacher said that, she was wrong. I ...
Wednesday, November 29, 2006 at 7:03pm

science
how the earth rotates by itself? Momentum imparted to it million of years ago when the solar system formed. One theory involves glancing collision with a large asteroid millions of years ago that also broke off material that eventually developed into the moon. I hope this ...
Monday, November 27, 2006 at 6:03am

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

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