Friday
October 24, 2014

Homework Help: Science: Earth

Recent Homework Questions About Earth

Post a New Question | Current Questions

earth science
21. Billions of fossils of plants, fishes, and land animals, many almost perfectly preserved, could not have been buried by natural _______ observable in the world today. DEATHS DISEASES EVELOUTION PROCESSES processes right? That makes good sense to me.
Wednesday, April 4, 2007 at 12:23pm

Earth
1. The great galaxy in Andromeda has an angular diameter along its long axis of about 5^0. Its distance is about 2.2 million light years. What is its linear diameter? angle*distance= arc distance. You need the angle in radians to do this.
Tuesday, April 3, 2007 at 9:37pm

Geography.../what does this mean?
" The earth's physical landscape is the result of conflict between forces..." Explain what this means. Thanks. Is it possible that forces move Earth around, sometimes the movement is opposing another landforce, they collide, and one slide under?
Tuesday, April 3, 2007 at 8:54pm

Physics HELP!!!!!!!!
The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 106 m, determine the speed and centripetal acceleration of a person situated ...
Tuesday, April 3, 2007 at 6:33pm

Earth
1. If the Earth were the size of B-B (with a radius of about 0.2 centimete), how big would the Sun be? How big would the Milky Way be? 2. Imagine building a model of the Solar System on your campus. Work out the diameter and spacings of the planets in millimeters and meters ...
Tuesday, April 3, 2007 at 5:52pm

astronomy
1. The radius of the Sun is 7 X 10^5 kilometers. Use powers of ten to show that the Sun's radius is about 100 times the Earth's radius. 2. Given that an astronomical unit is 1.5 X 10^8 kilometers and a light-year is about 10^13 kilometers, how many AU are in a light-...
Tuesday, April 3, 2007 at 5:50pm

chem
Forty miles above the earth's surface the temperature is 250 K and the pressure is only 0.20 mm Hg. What is the density of air (in grams per liter) at this altitude? (Assume the molar mass of air is 28.96 g/mol.) PV=nRT n/V= molar desity= P/RT mass density= molar density*...
Friday, March 30, 2007 at 1:27am

Physical Science
From a general relativistic point of view, a person on the ground floor of a skyscraper ages...faster or slower than a person on the top floor? With the faster movement of the rotation of the earth at the higher altitude, the person on the ground floor would age faster than ...
Thursday, March 29, 2007 at 10:14pm

Physics- drwls please help
(a) Calculate the kinetic energy that the earth has because of its rotation about its own axis. Assume that the earth is a uniform sphere and that its path around the sun is circular. For comparison, the total energy used in the United States in one year is about 9.33 109 J. (...
Wednesday, March 28, 2007 at 6:52pm

science
What star other than the sun is closest to the earth? Proxima Centauri, which is part of the alpha Centauri three-star system
Wednesday, March 28, 2007 at 5:17pm

Physics
Calculate the kinetic energy that the earth has because of its rotation about its own axis. Assume that the earth is a uniform sphere and that its path around the sun is circular. For comparison, the total energy used in the United States in one year is about 9.33 109 J. ...
Wednesday, March 28, 2007 at 12:40pm

Physics
A ball is tossed straight up from the surface of a small spherical asteroid with no atmosphere. The ball goes to a height ewual to the asteroid's radius and then falls straight down towardd the surface of the asteroid. What forces if any act on the ball while it is on the ...
Monday, March 26, 2007 at 6:41pm

science
where can you see earth's atmospere clearly Well, you can see light that is scattered from microscopic dust particles in the atmosphere during the day from any point: That blue color of the sky is that scattered light.
Monday, March 26, 2007 at 4:01pm

Science
Why is an extra day added to February every four years? It is nice to have the calendar year the same as the Earth's orbit around the Sun. It takes 365 1/4 days to go around the sun...so, each four years, we add a day to correct the calendar. Thanks Bob!
Sunday, March 25, 2007 at 11:11am

PLEASE HELP SOLVE RIDDLE
I jump I run, I am one of four, you can find me hanging around your door. What am I? Please help I'm usually great at answering these. But I am lost on this one. PLEASE tell us if you get the answer :) what weighs a lot going forward but not backwards? Two men occupy ...
Friday, March 23, 2007 at 7:44am

Geog
2- at sea level the air temperature is 80 degree F. this air reaches the dewpoint at 6,000’. The air continues to rise, pushed up by trade winds, over a mountain that is 12,000’ high. If the dry adiabatic rate is 5.5 degree F/ 1000’ and the wet adiabatic rate is...
Thursday, March 22, 2007 at 10:23pm

Science
I would like to know does this statement makes a good hypothesis for my paper(or)can someone give me some type of insight on how to word it correctly. "My paper will prove that homosexuality is a phenomenon that maybe due to biological factors, enviromental infulences or ...
Thursday, March 22, 2007 at 4:28pm

Re: Physics - drwls #2
Posted by winterWX on Monday, March 19, 2007 at 11:54pm. A small block of mass m = 4.0 kg can slide along the frictionless loop-the-loop. The block is released from rest at point P, at height h = 23R above the bottom of the loop (R is the radius of the loop). Express your ...
Thursday, March 22, 2007 at 3:01am

physics
A pendulum clock that works perfectly on Earth is taken to the Moon. (a)Does it run fast or slow there? (b) if the clock is started at 12:00:00 am, what will it read after one Earth day(24hrs)? Assume that the free-fall acceleration on the Moon is 1.63 m/s^2 I tried to do this...
Wednesday, March 21, 2007 at 4:33pm

English
Last one for today! (Thanks for all the help guys) Do these sentences mean the same? "Wheeling to their stations in the sky, the stars make the poor world-fret of no account." And "Wheeling to their stations in the sky, the stars make the world forget about its ...
Wednesday, March 21, 2007 at 9:46am

English
Hi. I need help understanding the following sentence. "And yet--and yet--is it not perhaps to satisfy expectation that one falls into the tragic key in writing of desertness? The more you wish of it the more you get, and in the mean time lose much of pleasantness." ...
Wednesday, March 21, 2007 at 8:39am

English
Hi. I need help understanding the following sentence. "And yet--and yet--is it not perhaps to satisfy expectation that one falls into the tragic key in writing of desertness? The more you wish of it the more you get, and in the mean time lose much of pleasantness." ...
Wednesday, March 21, 2007 at 7:26am

science NEED BY TOMMOROW MORNING AT 9:30!!
Can you tell me who figured out the earth was round and why they wanted to? THNX :) Please check this site for your information. http://www.madsci.org/posts/archives/nov​99/942957483.Sh.r.html People have always been curious and wanted to know about their environment.
Tuesday, March 20, 2007 at 6:28pm

Physics - drwls?
A small block of mass m = 4.0 kg can slide along the frictionless loop-the-loop. The block is released from rest at point P, at height h = 23R above the bottom of the loop (R is the radius of the loop). Express your answers in the form ngR, where n is the number you will ...
Monday, March 19, 2007 at 11:54pm

science
I am studying science at GCSE. I a working through a revision book and have come across a question which i am unsure of the answer. The question is, "state the number of different elements present in C6H5CO2Na." The answer i have is 14 but still i am unsure. Please ...
Monday, March 19, 2007 at 4:07pm

Science
Granite is an intrusive, felsic rock, which may be produced by partial melting or fractional crystallization. Explain how these processes can produce felsix magmas from more mafic parent magmas. Since this is not my area of expertise, I searched Google under the key words &...
Monday, March 19, 2007 at 9:48am

BIO ?'s
Why is life based upon the cell? More or less, why are cells necessary for life? Is there a limit to how large a cell can be? ** If anyone can help or just give me an idea to go on for this it would be helpful! Even a good site to start research! THANKS! There may be life ...
Sunday, March 18, 2007 at 9:04pm

Science
Why is the human population of the Earth still growing rapidly even though birth rates have begun to fall slightly? Due to better health and medical advancements, people are living longer.
Sunday, March 18, 2007 at 8:29pm

Science
[I picked d.] How many species are estimated to be living on earth? a.between 10,000 and 1,000,000 b.between 500,000 and 1 million c.between 1 and 5 million d.between 10 and 50 million http://faculty.plattsburgh.edu/thomas.wo​losz/howmanysp.htm This is a political, not ...
Sunday, March 18, 2007 at 3:21pm

science
As an environmental science teacher, how would you respond to someone who tells you (a) that he or she does not believe in biological evolution because it is "just a theory"? How would you respond if another student states, (b) we should not worry about air pollution...
Thursday, March 15, 2007 at 10:03pm

science
I need to know about the wind patterns, tides/high and low,or upwelling for the north sea,irish sea,and the bay of biscay Thank you for using the Jiskha Homework Help Forum. Here is what I find: 1. http://gpc.edu/~pgore/Earth&Space/GPS/wa​ves-currents-tides.html 2. http...
Wednesday, March 14, 2007 at 10:05am

Physics
A pulsar is a rapidly rotating neutron star that continuously emits a beam of radio waves in a searchlight manner. Each time the pulsar makes one revolution, the rotating beam sweeps across the earth, and the earth receives a pulse of radio waves. For one particular pulsar, ...
Wednesday, March 14, 2007 at 1:37am

earth science
Info on the largest earthquakes http://earthquake.usgs.gov/regional/worl​d/historical.php
Tuesday, March 13, 2007 at 10:36pm

Earth Science
Please help me out with this question!: Explain how hurricanes form. http://en.wikipedia.org/wiki/Hurricane
Tuesday, March 13, 2007 at 10:08pm

science
how is the air we breath today different from 3.6 billion years ago? http://en.wikipedia.org/wiki/Earth's​_atmosphere#Evolution_of_the_Earth.27s_a​tmosphere http://eesc.columbia.edu/courses/ees/cli​mate/lectures/earth.html
Tuesday, March 13, 2007 at 10:07pm

Physics
A pulsar is a rapidly rotating neutron star that continuously emits a beam of radio waves in a searchlight manner. Each time the pulsar makes one revolution, the rotating beam sweeps across the earth, and the earth receives a pulse of radio waves. For one particular pulsar, ...
Tuesday, March 13, 2007 at 2:40pm

science
The atmosphere is composed of a mixture of _______________, _____________ ____________, and tiny___________________. Thank you for using the Jiskha Homework Help Forum. The origin of our atmosphere is still open to a great deal of speculation. One theory is that the first ...
Monday, March 12, 2007 at 10:38pm

science
why do we find the major land biomes at specific locations on the earth in both the northern and the southern hemispheres? Variations in climate determine the biomes. These variations are determined by the frequency and direction of winds and ocean currents, along with ...
Monday, March 12, 2007 at 7:57pm

Earth Science
what is capillarity and runoff ? http://dictionary.reference.com/browse/c​apillarity http://dictionary.reference.com/browse/r​unoff
Sunday, March 11, 2007 at 8:13pm

2nd attempt Essay for Photography
I posted this before, but failed to paste the essay! oops.. haha. So here's the essay. Please proofread and critique and comment. I'm not so sure about the conclusion. It feels a little weak to me..thanks!!! People seek the answers of their own questions about their ...
Sunday, March 11, 2007 at 2:55pm

Physics
Zero, a hypothetical planet, has a mass of 1.0x10^23 kg, a radius of 3.0x10^6 m, and no atmosphere. A 10 kg space probe is to be launched vertically from its surface. (a) If the probe is launched with an initial kinetic energy of 5.0x10^7 J, what will be its kinetic energy ...
Friday, March 9, 2007 at 10:31pm

Re: Physics/Math
Posted by Technoboi11 on Wednesday, March 7, 2007 at 1:09am. Zero, a hypothetical planet, has a mass of 1.0x10^23 kg, a radius of 3.0x10^6 m, and no atmosphere. A 10 kg space probe is to be launched vertically from its surface. (a) If the probe is launched with an initial ...
Friday, March 9, 2007 at 8:52pm

science I NEED HELP....WORTH 45%OF MY GRADE
wat is blasstoff like???? earth's orbit???????? wat do they do to stay healthy???? wat type of exercise do they do????? effect on weightlessness?????? atmosphere of the moon???? lunar soil adn craters???? transportation on the moon???????? science experiments??????? ...
Thursday, March 8, 2007 at 6:29pm

science
can u explain the wter cycle for me ? i wonder what precipitation means? http://www.onelook.com/ Type precipation in that window http://www.enchantedlearning.com/subject​s/astronomy/planets/earth/Watercycle.sht​ml
Wednesday, March 7, 2007 at 7:29pm

physic
What does “seven earths" as mentioned in surah at-Talaq actually mean?. what is each cointing on earth? please give detail answer.
Tuesday, March 6, 2007 at 9:48pm

science
Name at least two processes that change Earth's surface quickly.
Thursday, March 1, 2007 at 5:24pm

Science
There are more earthquakes along the western coast of the United States than along the eastern coast. Explain. thank you Where do earthquakes tend to occur, in terms of the tectonic plates of the earth? http://www.seismo.unr.edu/ftp/pub/louie/​class/100/plate-tectonics....
Thursday, March 1, 2007 at 5:21pm

physic
What does "seven earths" as mentioned in surah al-Talaq acctually mean? It means that, according to the Quran, Allah created seven heavens, each contining one earth.
Thursday, March 1, 2007 at 8:22am

PLEASE HELP! EARTH SCIENCE
What is the relative humidity of sample 2: Sample: 2 T(degrees)C: 32(degrees) Mass of Water Vapor: 14 g Mass of Water vapor at Saturation: 34 g please help me...i dont understand how to find this
Tuesday, February 27, 2007 at 9:31pm

Earth Science
What is the relative humidity of sample 2: Sample: 2 T(degrees)C: 32(degrees) Mass of Water Vapor: 14 g Mass of Water vapor at Saturation: 34 g please help me...i dont understand how to find this The relative humidity in this case is 14/34 = 41% It is always the ratio of the ...
Tuesday, February 27, 2007 at 8:58pm

envirnomental science
as an environmentalscience teacher, how would you respone to someone who tells you that he or she does not believe in biological evolution because it is just a theory, and we shoul not worry about air pollution because through natural selection, the human species will develop ...
Monday, February 26, 2007 at 11:46pm

Physics
A 7450kg satellite has an elliptical orbit. The point on the orbit that is farthest from the earth is called the apogee. The point on the orbit that is closest to the earth is called perigee. Suppose that the speed of the satellite is 2940m/s at the apogee and 8400m/s at the ...
Sunday, February 25, 2007 at 8:07am

science
a experiment to prove that a freely suspended or floating magnet always point in the north south direction plz help got my trails!??!?!?! how do i get the ans to this question?????? That doesn't look like a question. It looks like a suggested experiment to prove a ...
Sunday, February 25, 2007 at 4:54am

earth space science
how are each of the air masses related and/or different from each other? Are you talking about the various layers of the atmosphere?
Saturday, February 24, 2007 at 12:17pm

Science
Thank you! Why is there a lunar eclipse only twice a year and not once a month? Thanks for the help. On the night of May 15/16 we will be able to see a total lunar eclipse. Lunar eclipses can only happen when the Moon is full and it passes behind the Earth and into its' ...
Monday, February 19, 2007 at 9:07pm

Physics
The emf induced across the wing-tips of a flying aircraft is of the order of several millivolts. Can this value be obtained using a sensitive millivoltmeter connected across the wing-tips? Explain your answer. Not if connections are actually made to the wing tips. The wires to...
Monday, February 19, 2007 at 9:04am

science
the acceleration of gravity on the surface of Mars is m/s squared. if an astronaut in a space suit can jump upward 20cm on the earth's surface, how high could he jump on the surface of Mars? You need to provide a number for the acceleration of gravity on Mars, which I will...
Monday, February 19, 2007 at 2:07am

Geography
What two methods are used to represent features on the earth? On a physical map, shades of black to light gray or various colors can show elevations. On three-dimensional maps and globes, the mountains are raised slightly above the oceans.
Sunday, February 18, 2007 at 4:32pm

physics (check my answers)
When the nuclear fuel in the sun is gone, the sun will collapse to a a. black hole b. white dwarf c. supernova d. neutron star My answer: I think its a black hole. If the mass of the Earth were suddenly doubled while the radius was unchanged, your weight would be? My answer: ...
Saturday, February 17, 2007 at 6:38pm

Physics
What linear speed must an Earth satellite have to be in a circular orbit at an altitude of 186 km? What is the period of revolution? winterWX, Friday, February 16, 2007 at 9:36pm So GMm/r^2 = mv^2/r and I know that I need to solve for v but what do I use for the mass of the ...
Friday, February 16, 2007 at 11:31pm

Physics
A orbiting satellite stays over a certain spot on the equator of (rotating) Earth. What is the altitude of the orbit (called a "synchronous orbit")? Write the equation for the period of a satellite in terms of the distance from the Earth's center. It is a special...
Friday, February 16, 2007 at 4:31pm

Physics
What linear speed must an Earth satellite have to be in a circular orbit at an altitude of 186 km? What is the period of revolution? So GMm/r^2 = mv^2/r and I know that I need to solve for v but what do I use for the mass of the satellite? Do I just plug in values for G, M, m ...
Friday, February 16, 2007 at 4:30pm

Physics help----------thanks
A charged cloud system produces an electric field in the air near the Earth's surface. A particle of charge -2.2 10-9 C is acted on by a downward electrostatic force of 3.0 10-6 N when placed in this field. (c) What is the magnitude of the gravitational force Fg on the ...
Thursday, February 15, 2007 at 5:02pm

Physics
In 1956, Frank Lloyd Wright proposed the construction of a mile-high building in Chicago. Suppose the building had been constructed. Ignoring Earth's rotation, find the change in your weight if you were to ride an elevator from the street level, where you weigh 600 N, to ...
Wednesday, February 14, 2007 at 10:51pm

Physics
In 1956, Frank Lloyd Wright proposed the construction of a mile-high building in Chicago. Suppose the building had been constructed. Ignoring Earth's rotation, find the change in your weight if you were to ride an elevator from the street level, where you weigh 600 N, to ...
Tuesday, February 13, 2007 at 10:17pm

algebra 1 scale drawing
On a scale drawing of steps with the base being 1 3/4 inches and the steps going up 1/4 inch each on the drawing.Which scale was used for the drawing if the actual height of each step is 6 inches? A. 1/8 = 1 foot, 10 ines the are hard as heck 2 its hard and yet my teacher isn...
Tuesday, February 13, 2007 at 9:33pm

Earth Science
What is the name of scientists who study earthquakes?? ♥ thanks Seismologists
Tuesday, February 13, 2007 at 9:20pm

Science
As an environmental science teacher, how would you respond to someone who tells you (a) that he or she does not believe in biological evolution because it is "just a theory," and (be) we should not worry about air pollution because through natural selection, the ...
Tuesday, February 13, 2007 at 1:36am

Physics/Math
A certain string can withstand a maximum tension of 43 N without breaking. A child ties a 0.37 kg stone to one end and, holding the other end, whirls the stone in a vertical circle of radius 0.91 m, slowly increasing the speed until the string breaks. Where is the stone on its...
Monday, February 12, 2007 at 9:51pm

physics
I need some help and I was wondering if you guys could give me some hints and stuff. thanks a lot!! Question 1 A force causes a certain acceleration. What acceleration would half of the original force cause? a. The same amount b. 1/2 times c. 4 times d. 2 times Question 2 How ...
Sunday, February 11, 2007 at 5:20pm

Geology (college level)
What is the process by which elements form? In the stars, fusion mainly. On Earth, radioactive decay. For further reading: http://www.longman.co.uk/tt_secsci/resou​rces/scimon/hoyle/hoyle.htm BIG BANG NUCLEOSYNTHESIS WAS THE FIRST PROCESS OF ELEMENT FORMATION Can some ...
Friday, February 9, 2007 at 8:52pm

science
What steps do you think can be taken to reduce the harmful effects of human activities on biogeochemical cycles? Which businesses would these changes impact the most? To assess the harmful effects of human activities, you first need to know about the biogeochemical cycles. ...
Thursday, February 8, 2007 at 9:32pm

enviromental science
what is in a region of long-term atmospheric conditions Sulfur dioxide in the upper atomsphere cand lead to the formation of what that reduce the amount of sunlight reaching the surface of Earth
Thursday, February 8, 2007 at 6:26pm

social!
To what extent should societies attempt to meet present needs, and to what extent should they try to provide for the future to the extent that they provide enough needs for now, and what is left is left. Theres old/extremist political views called libertarianism and socialism...
Friday, February 2, 2007 at 12:11pm

relative velocity
A radar antenna is tracking a satellite orbiting the earth. At a certain time, the radar screen shows the satellite to be 159km away. The radar antenna is pointing upward at an angle of 59.3 from the ground.Fine the x and y components(in km) of the position of the satellite ...
Thursday, February 1, 2007 at 4:35pm

Earth Science
A region of ocean water having the same temperature and salinity throughout is what??
Wednesday, January 31, 2007 at 9:00pm

Geog
In one Minute of time, how does the earth rotate in minutes or seconds of longitude? rotation=360 degrees/ number minutes in the day. 360/1440 = 0.25 is that the right answer
Wednesday, January 31, 2007 at 8:02pm

Geog
if each time zone is 15 degrees in width who many time zones are there around the earth? Simple math problem. There are 360 degrees around the world. Divide 360 by 15.
Tuesday, January 30, 2007 at 9:30pm

Geog
In one minute of time how far does the earth rotate in minutes or seconds of longitude? Please use the answer I posted in my last answer to calculate this answer.
Tuesday, January 30, 2007 at 9:20pm

Geog
How many minutes does it take for the earh to rotate through 1 degree of longitude? The earth has 360 degrees of longitude. It rotates every 24 hours. There are 1440 minutes in a day. Divide 1440 by 360 to get your answer.
Tuesday, January 30, 2007 at 9:16pm

Physics
100000W of power is delivered to the other side of a city by a pair of power lines with the voltage difference of 15000V. a) how much current flows in the lines? 100000/15000 = 6.9 A b) Each of the 2 lines has a resistance of 10 ohms. What is the voltage change along each line...
Tuesday, January 30, 2007 at 8:57pm

physics
Halley's comet moves about the sun in an elliptical orbit with its closest approach to the SUn being .59AU and its greatest distance being 35AU (1AU=Earth-sun distance) if the comet's speed at closest approach is 54km/s what is its speed when it is farthest from the ...
Monday, January 29, 2007 at 4:20pm

Physics
The acceleration due to gravity on a planet other than the earth has a magnitude of 1.50 m/s2. As in examples 6, 7 and 8, a placekicker kicks a football with an initial speed of 20.3 m/s at an angle of 39.4 ° above horizontal. Assume that the ball is kicked on this other ...
Monday, January 29, 2007 at 4:04pm

science
what are some items on earth that look similar to the moon?
Sunday, January 28, 2007 at 10:33am

physical geography
A-When Magellan’s crew left Spain to sail around the world, it took nearly three years to return to spain. Although Magellan had died, and only a skeleton crew arrived back in Spain, they had the incorrect day on their calendars, they were a day behind, although accused ...
Saturday, January 27, 2007 at 1:14am

help half yr tests
whats a rock cycle ] http://www.rocksandminerals.com/rockcycl​e.htm http://www.classzone.com/books/earth_sci​ence/terc/content/investigations/es0602/​es0602page02.cfm http://www.windows.ucar.edu/tour/link=/e​arth/geology/rocks_intro.html =)
Friday, January 26, 2007 at 12:53pm

science
How long is day and how long is night? PLEASE HELP ME! thanks PLEASE HELP ME!! We usually think, in the United States, of a day being 12 hours and night being 12 hours; however, as you well know, the actual hours of daylight and night time change daily. Also, day time and ...
Thursday, January 25, 2007 at 11:06pm

need HELPwith 2 questions!!
How long is day and how long is night? Does the sun come up in the morning all over the world? Explain please help me I only need: How long is day and how long is night? Does the Sun come up in the morning all over the world? Please explain to me. At any given time, how much ...
Thursday, January 25, 2007 at 10:02pm

Earth Science
What two things are used for determining how a rock was formed??
Thursday, January 25, 2007 at 8:02pm

to bobpurlsey
I had the same answer as you: except I subtracted i-i = 0 Given vectors A= (Axi + Ayj), B= (Byj+Bzk) and C= (Cyj + Czk). a) find the triple product of these vectors defined by A dot (BxC) in terms of the vector components. I get 0 as the answer (i-i) BxC (Byj+Bzk) x (Cyj + Czk...
Tuesday, January 23, 2007 at 2:29pm

greek mythology
1.All the following were writers of ancient Greek plays and poetry exept a.Homer b.Sophocles c.Joseph Campbell 2.Chaos gave birth to the following exept a.Uranus(heaven) b.Tartarus(under earth) c.Gaea(earth) 3.Gaea gave birth to the following exept a.mountains b.Pontus(sea) c....
Monday, January 22, 2007 at 9:42pm

Earth Science
I am struggling with these two questions I have looked all over the internet && even my science book but still no answers...thank you to anyone that can help. ♥ What is unique about Earths position in the Solar system as it relates to water, and why is this important...
Monday, January 22, 2007 at 8:25pm

PHYSICS HELPPPPP
A diver descends from a salvage ship to the ocean floor at a depth of 35 m below the surface. The density of ocean water is 1.025x10^3 kg/m^3. a) Calculate the guage pressure on the diver on the ocean floor. b) Calculate the absolute pressure on the diver on the ocean floor. ...
Sunday, January 21, 2007 at 4:46pm

SOLOR SYSTEM
WHAT IS THE DISTANCE BETWEEN FROM THE SUN AND EARTH TO ALL THE PLANETS http://www.windows.ucar.edu/tour/link=/k​ids_space/distance.html =) every thing that goes a round the sun is called an ecosystem It's size solor system has 9 planets.
Saturday, January 20, 2007 at 1:58pm

religion, help
can someone explain to me or help me out on the following question thanks. How has Christianity, a faith based on the teachings of one text (the Bible), divided into so many denominations? What religion are you looking at this from? because many different denominations will ...
Friday, January 19, 2007 at 3:47am

science
how is schopf's theory similar to oparin's theory about the orgin of life? MODERN STROMATOLITES are structures built by cyanobacteria(blue-green algae), grace Shark Bay, Australia. Elsewhere in Australia, J. William Schopf of the University of California at Los Angeles...
Tuesday, January 16, 2007 at 2:19pm

physics
Suppose that the displacement of a particle is related to time according to the expression delta x = ct^3. What are the SI units of the proportionality constant c? My answer: delta x = ct^3 m = c s^3 (s: seconds) m/s^3= c The SI units for c: m/s^3 correct? 2) Determine if ...
Monday, January 15, 2007 at 8:48pm

Physics....Orbiting Satellite
A orbiting satellite stays over a certain spot on the equator of (rotating) Venus. What is the altitude of the orbit (called a "synchronous orbit")? I found the radius and mass of Venus on the google, but I don't know what I should plug in the "T" if I ...
Monday, January 15, 2007 at 3:10pm

Physics Question......many thanks
A projectile is shot directly away from Earth's surface. Neglect the rotation of Earth. (a) As a multiple of Earth's radius RE, what is the radial distance a projectile reaches if its initial speed is one-fifth of the escape speed from Earth? ____ times RE (b) As a ...
Monday, January 15, 2007 at 11:29am

Gravitation help..........thanks
A projectile is shot directly away from Earth's surface. Neglect the rotation of Earth. (a) As a multiple of Earth's radius RE, what is the radial distance a projectile reaches if its initial speed is one-fifth of the escape speed from Earth? ____ times RE (b) As a ...
Sunday, January 14, 2007 at 9:46pm

Pages: <<Prev | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | Next>>

Post a New Question | Current Questions

Homework Help: Science

Search
Members