Recent Homework Questions About Earth
The acceleration of gravity on the moon is about 1.6 m/sec2. An experiment to test gravity compares the time it takes objects to reach a speed of 10 m/sec after being dropped from rest. How long does an object dropped on the moon have to fall compared to an object dropped on ...
Tuesday, September 4, 2007 at 10:30pm
A weather balloon is floating at a constant height above Earth when it releases a pack of instruments. If the pack hits the ground with a velocity of -68.5 m/s, how far does the pack fall? a = -9.80 m/s^2 Vf = -68.5 m/s d = ?
Tuesday, September 4, 2007 at 9:23pm
The basement of a new home will have the following dimensions 30 feet long 24 feet wide and 9 feet deep If the earth is hauled away in loads of 3 cubic yards each, how many loads must be hauled away?
Tuesday, September 4, 2007 at 8:01pm
I am not too sure how to solve this problem: Gravity on the surface of the moon is only 1/6 as strong as gravity on the Earth. What is the weight of a 10 kg object on the moon? This is how I did 1/6(10)(9.8)=16.3 N
Sunday, September 2, 2007 at 10:31pm
_____________provided significant sources of energy on early Earth, and were most likely involved in the origin of life. Options A) Volcanic activity, violent thunderstorms, and ultraviolent radiation B) Bombardment from meteorites, gamma radiation, and osmic radiation. C) ...
Wednesday, August 29, 2007 at 10:43pm
Posted by Anonymous on Friday, August 24, 2007 at 9:42pm. download mp3 free instrumental remix I don't understand this question in A Raisin in the Sun, Act III, Scene I: Q: Beneatha is particularly bitter, but Ruth defends Walter. What does Ruth say? Possible A: Ruth said...
Sunday, August 26, 2007 at 4:41pm
1. The price of gold is 200 dollars/oz. How much did 1 g of gold cost that day? (1 oz = 28.4 g)Use dimensional analysis. 2. How many minutes does it take light from the sun to reach Earth? (Distance from sun to Earth is 93 million mi, speed of light= 3 x 10^8 m/s) Use ...
Saturday, August 25, 2007 at 5:31pm
Earth and Space Science
Hi everyone! I am having the darndest time figuring out the answer to a test question and am wondering if anyone can shed some light and help me out. Here is the question: The temperature (the average kinetic energy of the molecules) of a star is evidenced by its color (its ...
Saturday, August 18, 2007 at 6:24am
How can I calculate the spring constant given only the following: equilibrium length of spring: 10.5 cm stretched length of spring (by attaching a mass): 12.5 cm object's mass: 198.9 grams -please help me...I'm really lost... You need to assume that the measurement was...
Saturday, August 18, 2007 at 3:47am
Can you explain in more detail WHY ....if you live in Atlanta and your grandparents live in Seattle and they go to bed at 10 pm.. 7pm Atlanta time would be the latest they would call.... I think that's wrong. Since the sun rises in the east, the east coast, including ...
Friday, August 17, 2007 at 8:31pm
The average distance between Earth and the sun is 1.50e8 km. Calculate the average speed, in km/h, of Earth assuming a circular path about the sun. Use the equations v = 2(pi)r/T. You know that, for the Earth, T = 365.25 days. Convert that to hours (by multiplying by 24 h/day...
Thursday, August 16, 2007 at 10:57pm
The radius of Earth is 6.37 103 km. Find the speed, in km/h, resulting from the rotation of Earth, of a person standing on the equator. v=2(pi)(r)/T v=2(pi)(6.37e3)/24 v=1.67e3 km/h how would you convert this to m/s. it does not seem to be working for me and I cannot find my ...
Thursday, August 16, 2007 at 9:20pm
The average distance between Earth and the sun is 1.50e8 km. Calculate the average speed, in km/h, of Earth assuming a circular path about the sun. Use the equations v = 2r/T. Please ignore this question and view the question I have a few spaces above. The equation was not ...
Thursday, August 16, 2007 at 9:19pm
University of Botswana
Define Ethics and show how it relates to Metaphysics and Epistemology. Check these sites. http://en.wikipedia.org/wiki/Ethics http://en.wikipedia.org/wiki/Epistemology http://en.wikipedia.org/wiki/Metaphysics Why are we here on Earth? What is our Purpose? How do ...
Wednesday, August 15, 2007 at 4:48am
Look I am totally paranoid I have been on every site on earth and I still havent found answers to any of these questions on!@#$%^&ington Green Gardens Australia: Safety,rules and interesting facts. Please help! Check these sites. http://www.about-australia.com/travel-gu...
Wednesday, August 15, 2007 at 2:18am
The distance from earth to the center of the galaxy is about 22500 ly (1 ly = 1 light-year = 9.47 1015 m), as measured by an earth-based observer. A spaceship is to make this journey at a speed of 0.9995c. According to a clock on board the spaceship, how long will it take to ...
Friday, August 10, 2007 at 5:08pm
How many joules of sunlight hit Earth per day? I have looked everywhere and can't find an answer!! The sun emits about 4*10^26 Watt. The flux of solar energy at the Earth is thus about: F = 4*10^26 Watt/(4 pi R^2) where R = 149.6*10^9 meters is the Sun-Earth distance: F = ...
Thursday, August 9, 2007 at 8:24pm
physics # 6
6. Which object listed below is not accelerating? a.) A person standing on the surface of the Earth. b.) A satellite in geostationary orbit. c.) A jet traveling at Mach 6.7 in a straight line. d.) A child standing on a merry-go-round. e.) A block oscillating on a spring when ...
Tuesday, August 7, 2007 at 11:45pm
physics # 5
5. The length of a simple pendulum with a period on Earth of one second is most nearly a.) 0.12 m b.) 0.25 m c.) 0.50 m d.) 1.0 m e.) 10.0 m The formula for the period is P = 2 pi sqrt(L/g) g is the acceleration of gravity, 9.8 m/s^2. Solve for L. (or get out a piece of string...
Tuesday, August 7, 2007 at 11:45pm
Hi. I was wondering if someone could help me grasp a concept. The concept is that soon the world will run out of natural resources to sustain life on Earth as the population increases. This idea is presented in a book I am currently reading, EO Wilson's The Future of Life...
Saturday, August 4, 2007 at 6:02pm
why could it be said that the historic period is only a minute in comparison ti the 24 hours of the day? The historic period began about 5,000 years ago when writing was first developed in Mesopotamia (now Iraq). Modern man has existed for at least 100,000 years. The historic ...
Sunday, July 22, 2007 at 9:20pm
Many people see life on earth as constant worry, physical poverty, spiritual alienation, sickness, hatred, mindless toil, and death. The ultimate goal of nirvana or being one with the Atman seems infinitely better than suffering on earth. For more information, check this site...
Sunday, July 22, 2007 at 2:24pm
How and why would a seller make a sale to a buyer that has no money the seller can use? Perhaps the buyer trades something of value to the seller. For instance the buyer might barter lumbering rights in a forest for heavy earth-moving equipment. what are the features/ ...
Thursday, July 19, 2007 at 10:21pm
when earth and mars are closest to each other in their orbits the angular separation between mars's moon phobos and the surface of mars is observed to be 22 arc seconds. if phobos orbits mars every .31910 days what is the average density of mars expresses in kilograms per ...
Monday, July 16, 2007 at 3:41am
What are the differences between terrestrial biome and aquatic life zone? A terrestrial biome is on land. An aquatic life zone is in water. Thank you for using the Jiskha Homework Help Forum. Here are some sites for you: 1. http://lpc1.clpccd.cc.ca.us/lpc/kmoore/b...
Sunday, July 15, 2007 at 4:28pm
computers? I think just a question.
what are some process used in different organizations to download and imput paper information into computerized systems so other can analyze? would this be like excel programs charts graphs etc.? 1. Manual retyping the paper information to a text file 2. Transmittal of scanned...
Wednesday, July 4, 2007 at 3:46pm
how did p.e. started in greece?? Please check this site about the Olympics of ancient Greece. http://www.olympic.org/uk/games/ancient/index_uk.asp If you mean that PE is phsical education then the answer is below. The site Ancient Greece: KIN 375 -- Historical Analysis ...
Wednesday, June 27, 2007 at 8:19am
How do I calculate the orbital velocity of a satellite that is 400 miles above the earth? Set the centripetal acceleration V^2/(R+h) equal to the gravitational acceleration, g * [R/(R+h)]^2 Then solve for V R is the earth's radius and h is the 400 mile height. g is the ...
Monday, June 25, 2007 at 12:42am
The US population 1990 was approximately 250 million, and the average growth rate for the past 30 years gives a doubling time of 66 years. The above formula for the US then becomes P(in millions) = 250 x 1(y - 1990)/66 (1) What will the population of the US be in 2025 if this ...
Friday, June 22, 2007 at 9:06pm
Could you please help me with this question; Scientists in the future hope to land a mannea spacecraft on Mars in order to survive on this planet problems associated with lack of air, water, food and shelter must be faced. Select 2 of these problems and describe how you think ...
Wednesday, June 20, 2007 at 9:54pm
English - The Scarlet Letter
I have two questions about the boook. I have AP work due within hours, and can't fiure out 2 questions in Chapters 5-8. Any help will be greatly appreciated. Thanks! d. When Governor Bellingham demands to know what Hester can teach Pearl concerning the "truths of ...
Saturday, June 16, 2007 at 7:50pm
You are flying to the Moon. Find the point at which the gravitational attractions of Earth and Moon on you will be equal and opposite. Given: radius of the moon: 1.74*10^6 m radius of the earth: 6.38*10^6 m orbital radius of the moon: 3.8*10^8 m Not enough information has been...
Thursday, June 14, 2007 at 12:54am
(a) Determine the amount of work (in joules) that must be done on a 104 kg payload to elevate it to a height of 993 km above the Earth's surface. ______ MJ (b) Determine the amount of additional work that is required to put the payload into circular orbit at this elevation...
Monday, June 11, 2007 at 1:32pm
Do aliens and ufo's exist? If they do, do they visiit earth? The word "alien" means foreigner or someone different. In that sense, there are many aliens. Are there intelligent beings on other planets? We don't know. We have no scientific evidence of life on ...
Saturday, June 9, 2007 at 10:39am
How will the landscape change after movement along a thrust fault? http://www.google.com/search?source=ig&hl=en&q=thrust+fault+result See if one of these sites answers your question. =)
Friday, June 8, 2007 at 1:30am
Hello everyone I know that when a force is applied it has to exert a force opossite But this really is not in my head can someone please give me an evidence or even a diagram showing how can we exert an opposite force if we are walking forwards Thanks alot When we are walking ...
Thursday, June 7, 2007 at 2:34pm
If object is thrown upward with an intitial velocity of 15 ft per second, then its height is given by h=-15t^2 + 60t. What is the maximum height? Two ways to find it. 1) AT the top, max height, will be one half of the time it would come back down and hit the earth at h=0 0=-...
Tuesday, June 5, 2007 at 6:04pm
WHY CAN'T HUMANS LIVE ON VENUS? Too hot, no oxygen and very high atmospheric pressure. But this doesn't mean that we could live there, it only means that we can't walk on the surface without protection. Thank you for using the Jiskha Homework Help Forum. Well, life...
Monday, June 4, 2007 at 8:33pm
4. Compare the population per square mile in Asia to the population per square mile in North America for the year 2000. Asia Land Area (1,000 mi2) -17,400 Percent of Earth 30.1% Population in 1900 - 932,000,000 Population in 1950 - 1,591,000,000 Population in 2000 - 4,028,000,...
Sunday, June 3, 2007 at 12:39am
PLEASE HELP ME! I'm not a math student and this is very hard for me. I'm a History Major *shy face* I am not a Math student whatsoever :S this is in my Geography course and I'm very confused can anyone help me out? Imagine that a woodlot 2x3km in size has been ...
Thursday, May 31, 2007 at 1:09pm
A) What is the minimum speed, relative to the Sun, necessary for a spacecraft to escape the solar system if it starts at the Earth's orbit? B) Voyager I achieved a maximum speed of 125 000 km/h on its way to photograph Jupiter. Beyond what distance from the Sun is this ...
Wednesday, May 30, 2007 at 11:52pm
thanks for the other info but im still stuck on one...i think the answer would be that there would be no seasons at all but i think i need a little more information. please help! question: how would seasons on earth be different if there was no axial tilt? http://www.newton....
Wednesday, May 30, 2007 at 5:06pm
globol warming is frequently disscussed topic it seems that every time you turn on the tv or open the newspaper there is some mention of global warming and the effect it is having on the world's enviroment write a paragrah about the cause of global warming how are man'...
Wednesday, May 30, 2007 at 4:07pm
i need help with the essay part of my exams so if you would answer any of these questions for me id be glad to study them, knowing ill get them right. *explain how parasites are different from scavengers.give an example each. *how would seasons on earth be different if there ...
Tuesday, May 29, 2007 at 7:31pm
I have two questions: How many hours of light and darkness are there in June at regions south of the Antartic Circle (dotted line in Southern Hemisphere)? Six months later, when the earth is at the December position, is the situation in the Antartic the same or is it the ...
Monday, May 28, 2007 at 3:10am
how does the atmosphere change at high altitudes? Since this is not my area of expertise, I searched Google under the key words "atmosphere altitude Earth" to get these possible sources: http://en.wikipedia.org/wiki/Earth's_atmosphere http://www.grc.nasa....
Sunday, May 27, 2007 at 3:28pm
does jupiter have a clockwise or counterr-clockwise rotation? Both. It depends on the direction you are looking. For instance, looking at the Earth, from the South of Earth, Earth has clockwise rotation. But looking at it from the North, is is counterclockwise.
Sunday, May 27, 2007 at 2:41pm
Mr. James- Science-again
uh, ok ok, so if my answer is not a then is it b,c,or d because non of my answers match what you said Mr. James Precession means the axis of the Earth is changing, so North changes.
Thursday, May 24, 2007 at 7:09am
Can Somebody plz help me with me question below, I didn't really get Mr. James's explanation for further reading. Precession means the axis of the Earth is changing, so North changes.
Thursday, May 24, 2007 at 6:53am
Here's my question--- Precession of earth's axis causes- a-axial tilt b-a change in the north pole star c-seasons d-day and night My answer was a- m i rite? Precession of earth's axis caused by the centrifugal force of the Earth's rotation... =) The cause of ...
Thursday, May 24, 2007 at 6:35am
Neutron stars are extremely dense objects with a mass comparable to the mass of the sun but a radius of only several thousand meters. Consider a neutron star of mass M = 1.99e+030 kg and a radius of R = 10 km. g = 1.3279e12 m/s Assuming uniform density, how much would 1.1 ...
Wednesday, May 23, 2007 at 11:47pm
Assuming uniform density, how much would 1.1 cubic centimeters of neutron star material weigh on the surface of the earth? You need the density of the neutron star to do this. weight= mass*g=density*volume*g
Wednesday, May 23, 2007 at 11:45pm
Is God real? Which is the true religion? For many people around the world, God is very real. The true religion is the one that a person whole-heartedly believes and faithfully follows. Hi Cherry. Considering this is a homework question, most Religious Education classes center ...
Wednesday, May 23, 2007 at 4:47pm
how far away is the sun in science notation? The distance of the earth from the sun varies from 9.1407905x10^7 miles to 9.4512780x10^7 miles with a mean distance of 9.2960242x10^7 miles. Many use 9.30x10^7 as the mean distance.
Wednesday, May 23, 2007 at 3:51pm
Any help pleeeze!! I'm totally lost on these!! 1. A 14 g coin slides upward on a surface that is inclined at an angle of 16° above the horizontal. The coefficient of kinetic friction between the coin and the surface is 0.23; the coefficient of static friction is 0.31. ...
Sunday, May 20, 2007 at 11:03am
write an account that considers what conditions would be required on an earth-like extrasolar planet for the carbon based life to evolve. In your answer you must keep in mind what is thought to have happened on earth, and you must: according to this i have to write about how ...
Saturday, May 19, 2007 at 2:11pm
Discuss how comets might have a role to play in life evolving on an earth-like extrasolar planet in a distant solar system. can some one please help me out here. If life came to Earth via a comet, wouldn't it make sense to predict that some comet could carry life to some ...
Friday, May 18, 2007 at 9:02pm
cyanobacteria,wich first appeared on earth over 3 billion yaers ago are? a.austrolopithecines b.prokaryotes c.one of the organisms on land d.descendents of primitive plants http://en.wikipedia.org/wiki/Cyanobacteria Read 1st Paragraph
Friday, May 18, 2007 at 4:52pm
What are some possible effects of climate change resulting from a warmer earth? Possible effects is melting of the polar caps, and flooding on all continents. Also, weather and rainfall patterns will change, so plants and animal will have a hard time finding food. Basically, ...
Thursday, May 17, 2007 at 7:21pm
It looks as if what you need to do is learn how to conduct thorough and effective searches for yourself. That's what research is, and I'm sure that's what your teacher expects you to do -- conduct research. You are searching for information that is so specific that...
Tuesday, May 15, 2007 at 11:17pm
Has anyone ever done a project on Macroeconomics in the Middle Earth? (based on Lord of the Rings?) I need help NOW! What a wonderful idea!! I presume you have read LOTR. You could do the whole middle earth or just a just an area such as the Shire or Gondor. Topics to include ...
Tuesday, May 15, 2007 at 9:23pm
what does FLOURISH mean in the context of shakespeare. ie. [flourish and shout] flourish v. flour.ished,flour.ish.ing,flour.ish.es v.intr. To grow well or luxuriantly; thrive: The crops flourished in the rich bottomland. To do or fare well; prosper: ¡°No village on ...
Thursday, May 10, 2007 at 7:53pm
Our class is studying the concave earth theory, which are our teacher suggests is the most viable theory for understanding the composition of the earth and the universe as a whole. However, I am having a difficult time comprehending the concave earth theory and how it would ...
Thursday, May 10, 2007 at 6:49pm
The true speed of a moving car on the Earth, if you want to be very precise, would be the speed of the car with respect to the ground Is this true? yeah it is true yeah it is true The true speed of a moving car on the Earth, if you want to be very precise, would be the speed ...
Thursday, May 10, 2007 at 11:27am
Explain how each of thse affect climate. -latitude -ocean currents -winds and air masses -elevation(altitude) -relief(mountain barriers) -nearness to water Please help. I need straight forward answers. I read some info online about these...but I do not understand. So can you ...
Wednesday, May 9, 2007 at 10:34pm
Can someone tell name 6 effects of ocean currents? Thanks Since this is not my area of expertise, I searched Google under the key words "'ocean currents' effects" to get these possible sources: http://www.thecanadianencyclopedia.com/index.cfm?PgNm=TCE&...
Wednesday, May 9, 2007 at 7:02pm
Couple of questions. Why does the earth keep moving? The engine of a rocket applies a continual force to push the rocket along. When the engine stops what will happen? I think the rocket will stop acceleration You need to be aware of the concept of inertia. Inertia is the ...
Tuesday, May 8, 2007 at 3:03pm
1.) Any object having a very large mass would necessarily have a very large weight. true or false? False 2.)For a freely falling object, A) the total distance covered doesn't change. B) the velocity doesn't change. C) the acceleration doesn't change. D) the speed ...
Tuesday, May 8, 2007 at 2:10pm
Can someone check these? 1. What device, developed in 1970, is able to make images of individual atoms? 1. The X-ray crystallographer 2. The laser 3. The Brownian motion detector 4. The scanning electron microscope My answer: 4 2. Which of the following is smallest? 1. Proton ...
Tuesday, May 8, 2007 at 1:44pm
Would you take this survey, please?
This is an assignment I have for a sociology class, to have people fill out surveys. Lot's of fun. Thanks! 1. What is the most important thing in your life? 2. How do you determine right and wrong? 3. Are you a good/bad person? How do you know? 4. What is your goal in life...
Monday, May 7, 2007 at 12:56am
consider a brick wall that has been exposed to the sun for some time. 1.how did the heat get from the sun's surface to the wall?(is it something about radiation?please help.) 2.the air over the wall seems to shimmer and shake as air currents rise from it.explain what ...
Friday, May 4, 2007 at 7:19am
umm don't know if i'm able to ask this but i was wondering if you guys would do a small interview for me for a research. the question is: why do you think many of us are obsessed with gardens and gardening(ur opinion plz)? can u please leave ur name(you can make it up ...
Thursday, May 3, 2007 at 11:00pm
What is the total mass of the earth's atmosphere? The radius of the Earth is 6.37E6 m, and atmospheric pressure at the surface is 1.013E5 N/m^2 (or Pa). I tried this: 1.013E5 Pa = Mg/ pi(6.37E6)^2 1.013E5 Pa (denominator)= 9.8 M solve for M: I'm coming with different ...
Thursday, May 3, 2007 at 8:05am
Which shows the greatest metallic character? -Na -K -Rb -Cs Also, What ions are very important for the proper functioning of biologic systems such as nerves and muscles? --oxygen ions --nitride ions --alkali metal ions --alkaline earth metal ions --hydrogen ions
Wednesday, May 2, 2007 at 4:55pm
I really need you answered this to my email. It's very important, for this may decide my result in the school exams, and I really need a good mark. Unfortunately, Portuguese system of education is full of problems... The question is... The altitude of a geostationary ...
Monday, April 30, 2007 at 6:12am
Calculus Or Something
Find the true location of the sun in relation to your reference of the horizon if the sun is observed to make an angle of theta with the horizon. This is not an easy question. Use Snells law to take into account the aberration and bending of light rays as they pass ...
Monday, April 30, 2007 at 12:36am
I am doing a reading comprehension project and I need to find a book and a song about "the elderly". Please Help!! do you mean like about old people or a book called The Elderly? about old people. about old people. hang on I'll look google Books About the Elderly...
Sunday, April 29, 2007 at 5:20pm
A line in star's spectrum lies at 400.0 nanometers. In the laboratory, that same line lies at 400.2 nanometers. How fast is the star moving along the line of sight; that is, what is its radial velocity? Is it moving toward or away from us? Since the wavelength shift is to ...
Friday, April 27, 2007 at 12:44pm
My Research Has Failed....
have made a grave mistake. My study of the darkness of the heart began with a simple psychological test and quickly snowballed. Spurred on by my youngest apprentice Ienzo, I constructed a massive laboratory in the basement of my castle. Unbeknownst to me, my six ...
Wednesday, April 25, 2007 at 6:40pm
I would like to comfirm that the 4 cycles on Earth are: carbon, water and rock. I think the 4th one is the biosphere but am not sure as the biosphere contains all attributes necessary (including the atmosphere)for life to exist. Am I on the track? I do understand that the ...
Wednesday, April 25, 2007 at 12:59pm
Science - geology
The age of a granite can be determined using radiometric dating. Explain the basis for a determination of a 238U-Pb radiometric date of 1120Ma for a granite.......HELP!!! hi sounds like you are on the same course as me i was stuck on this so give this a go as this is what ...
Wednesday, April 25, 2007 at 4:05am
chem help ASAP!!!!
What ions are very important for the proper fuctioning of biological systems such as nerves and cells? A)alkali earth metals B)hydrogen ions C)oxygen ions D)nitride ions E)alkali metal ions my choice is A or C can anyone help?
Sunday, April 22, 2007 at 7:52am
What ions are very important for the proper fuctioning of biological systems such as nerves and cells? A)alkali earth metals B)hydrogen ions C)oxygen ions D)nitride ions E)alkali metal ions
Saturday, April 21, 2007 at 11:32pm
discuss how interactions between the Earth systems affect the climate Mary or Bob or whoever, Please note that we don't do students' homework for them. Our tutors try to give you the information to help you complete your assignment on your own. If there's not a ...
Saturday, April 21, 2007 at 12:55pm
Choose the group from the given list: a) 1A b) 2A c) 3A d) 4A e) 5A The elements in this group are termed alkali metals. a b c d e nvm....choose the wrong question to post the question I wanted to post is: Choose the group from the given list: a) 1A b) 2A c) 3A d) 4A e) 5A ...
Friday, April 20, 2007 at 8:15pm
Earth's surface water is found in a.lakes b.rivers c.streams d.all of the above I picked d. because that's where SURFACE water is at right? yup ditto.....
Friday, April 20, 2007 at 5:50pm
Where can I find information regarding when different types of primates showed up in earth's history? http://www.google.com/search?as_q=primate+evolution&hl=en&num=10&btnG=Google+Search&as_epq=&as_oq=&as_eq=&lr=&as_ft=i&as_filetype=&as_qdr=all&as_nlo=&...
Friday, April 20, 2007 at 1:28pm
The answer to this can be found more quickly by consulting either an online or hardcopy dictionary. Here is an online dictionary definition. Main Entry: ge·ol·o·gy Pronunciation: jE-'ä-l&-jE Function: noun Inflected Form(s): plural -gies Etymology: New ...
Thursday, April 19, 2007 at 6:05pm
IS THIS TRUE
Biggest Land mammal: African elephants weigh up to 14,000 pounds and can eat as much as 600 pounds of food a day! Marine mammal: The blue whale is the world's biggest animal, even larger than any known dinosaur. An average-sized adult is 80 feet long and weighs about 120 ...
Thursday, April 19, 2007 at 5:19pm
What can scientist learn from moon rocks? A. The moon's water supply evaporated in recent years B. The moon is denser than earth C. The moon is older than the Earth D. The moon and earth are made of similar material let me see A and C are wrong cause a say the moons watre ...
Wednesday, April 18, 2007 at 6:09pm
science science science science science science
The moon orbits around the earth.Which of the following keeps the moon traveling in the same path each time it orbits the earth? A.energ from the surroundings B.Pull of gravity between the moon and the earth C.orbits in space are pushing the moon towards the earth D.the winds ...
Wednesday, April 18, 2007 at 5:31pm
5th Grade Science
The force of attraction between the Earth and an object is called? A. Magnetism B. Mass C. Energy D. Gravity http://en.wikipedia.org/wiki/Gravity hey ken. someone told me it was gravity So you think it is gravity
Wednesday, April 18, 2007 at 5:14pm
What keeps all the planets the big ones and the small ones in orbit in our big solar system? A.The gravity from the sun. B.The gravity from the moon. C.The gravity between all the planets. D.The gravity from the beautiful our earth. What do all the planets orbit around? the ...
Wednesday, April 18, 2007 at 4:50pm
You have it! In the future, please do not post more than once, and please post without the theatrics in the subject line. It won't get you help any faster. Can some one explain this passage I do not understand it it is by hazlitt it is called "on the want of money&...
Tuesday, April 17, 2007 at 11:05pm
On the spring equinox, in what part of the sky and what time of day does the full moon rise? March 20th is the Spring Equinox for the northern hemisphere, the time of year when the sun is at zero degrees longitude and latitude on the ecliptic, and the hours of daylight and ...
Tuesday, April 17, 2007 at 8:22pm
What a good topic from prehistory through the Enlightenment ages. Something interesting please. Topic for what: a few paragraphs, a short paper, or a long term paper? I always liked the history of witchcraft, the discovery of the solar system in which Earth was not the center...
Monday, April 16, 2007 at 7:50pm
What is the gtravitational potential energy of a 2.00e3 kg staellite that is in an orbit that has a radius of 9.90e6 m around the earth? Use gravitational potential energy=0 at r= (answer=-2.01e11J) What is the work done against gravity on the satellite in the ...
Monday, April 16, 2007 at 12:47pm