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February 10, 2016

Homework Help: Science: Earth

Recent Homework Questions About Earth

college earth science and astronomy
This isn't homework as much as I am trying to learn this on my own. I am trying to perform an experiment on solar power. I measured and recorded the volume (V= 250 mL) and mass (M= 250 g) of water in a cup. I then recorded the initial temperature(32 degrees celcius) of the...
Wednesday, March 18, 2009 by Elle

earth science
Most New York State sandstone bedrock was formed in a delta from sand grains deposited, buried, and cemented together by minerals. Explain.
Wednesday, March 18, 2009 by Anonymous

science
how does running water contributes most to the general wearing of earth's surface?
Wednesday, March 18, 2009 by Anonymous

physics
Two meteoroids 250,000 km from Earth are moving at 2.1 km/s. Meteor one is headed in a straight path for Earth, while meteor two is on a path that will come within 8500 km from the Earth's center. (A) What is the speed of the first meteroid when it strikes Earth. (B) What ...
Tuesday, March 17, 2009 by James

earth
i need a worksheet about " the past atmosphere"
Tuesday, March 17, 2009 by ha

sciecne
Which agent probably contributes most to the genral wearing down of Earth's surface? explain i know the answer is "running water" but how to explain it?
Tuesday, March 17, 2009 by Anonymous

Science
How did early astronomers figure out how large the Earth really was? Thank you! :-)
Tuesday, March 17, 2009 by Cassie

physics
Proponents of astrology claim that the positions of the planets at the time of a baby's birth will affect the life of that person in important ways. Some assert that this effect is due to gravity. Examine this claim with Newton's law of gravity. Calculate the maximum ...
Sunday, March 15, 2009 by cb

earth scince
What process is mainly responsible for shaping Earth's land surface
Sunday, March 15, 2009 by Andrew

physics
Proponents of astrology claim that the positions of the planets at the time of a baby's birth will affect the life of that person in important ways. Some assert that this effect is due to gravity. Examine this claim with Newton's law of gravity. Calculate the maximum ...
Sunday, March 15, 2009 by cb

physics
i tried doing this on my calculator but i keep getting the wrong answer..can someone try it on theirs and tell me what they got? thanks Substitute the period in seconds, T = 86,400 s, the gravity constant G = 6.67 multiplied by 10-11 kg-1 m3/s2, and the mass of the Earth, ME...
Sunday, March 15, 2009 by cb

Physics
Jessica's weight is 540 newtons. According to the Third Law, if the Earth pulls on Jessica with a force of 540 N, then Jessica pulls on the Earth with a force of 540 newtons that acts in the opposite direction. However, if Jessica stumbles while rollerblading, she will ...
Sunday, March 15, 2009 by Kim

physics...
T^2=((4pi^2)/(GM_E))r^3 Substitute the period in seconds, T = 86,400 s, the gravity constant G = 6.67 multiplied by 10-11 kg-1 m3/s2, and the mass of the Earth, ME = 5.98 multiplied by 1024 kg. Solve for r.
Sunday, March 15, 2009 by cb

physics
i keep trying to put this in my calculator but i keep getting the wrong answer...can someone please try it on their calculator and help me? thnks (a) Find the distance r to geosynchronous orbit. Apply Kepler's third law. T^2=((4pi^2)/(GM_E))r^3 Substitute the period in ...
Sunday, March 15, 2009 by cb

physics
Proponents of astrology claim that the positions of the planets at the time of a baby's birth will affect the life of that person in important ways. Some assert that this effect is due to gravity. Examine this claim with Newton's law of gravity. Calculate the maximum ...
Saturday, March 14, 2009 by cb

geology(science) am i correct
Respond to the following scenario: o Your younger brother is in 5th grade. He comes home and tells you to look at an animation his teacher showed him in geology class. o Review the Continents of the Past animation on this week¡¦s aXcess page. o After viewing the ...
Friday, March 13, 2009 by scooby91320002

physics
please check these 3: if the batteries in a portable CD player provide a terminal voltage of 12 V, what is the potential difference across the entire CD player? a. 3.0 V b. 4.0 V c. 6.0 V d. 12 V D two resistors having the same resistance value are wired in parallel. how does ...
Thursday, March 12, 2009 by physics

physics
above the earth, a 500nT magnetic field captures particles coming from the sun. If a proton moving at 600km/s runs into this magnetic field, what is the radius of motion of the proton? and also how long does it take the proton to travel in one circle?
Thursday, March 12, 2009 by jeff

Physics
Can someone please help me sort out this problem? "A boy standing at the equator jumps vertically into the air. Does he land in the exact same spot after landing?" I'm thinking that when he jumps he is also moving horizontally with the earth and so he will land ...
Wednesday, March 11, 2009 by Brigid

physics
questoins asked in a physics lesson which i find hard to answer: 1) do all objects have the same acceleration when they fall to earth? explain the answer. 2) what is the difference between weight and mass? any help would be greatly appreciated :)
Tuesday, March 10, 2009 by Candice

Algebra I - Answer check
2. a) 7^12/7^4 = 7^8 b)x^11/x^5 = x^6 c)12x^5/3x^2 = 4x^3 d)7x^6y^3/14x^3y = .5x^3y^2 5. a) (2x)^3(3x^2)^4 = 648x^11 b)(5x)^7/(5x)^4 = 25x^2 c)(2x)^5/-8x^3 = -4x^2 d)(4x^2y^5)(-3xy^3)^3 = -12xy^4 6. How long does it take light to travel from the Sun to Earth? Answer to the ...
Monday, March 9, 2009 by Katy

Science
Am I correct with my answeres below? During which hours of the day is the earth's emitted radiation highest and Why? My Answer: I think it is in the afternoon because of the increase in surface temperature. Why are values of LW^ higher in the summer than in the winter? My ...
Monday, March 9, 2009 by Mama Mia

Algebra
I have an assignment due tonight and I believe I have solved it all correctly until I come to part d of the question. "For what value is this equation undefined?" How do I determine this? The Environment Environmental and wildlife preservation ensures future ...
Sunday, March 8, 2009 by James

science
what site would i go to to summerize the climate changes that have accured from the past to the present and predict what you think the Earth will look like into the 21st. century????
Saturday, March 7, 2009 by dd

English
1. I feel painful in the stomach. 1-1. I feel painful on the stomach. (Which one is correct?) 2. The first seed was bigger than the second seed at first. However it was afraid of the cold. So it didn't try to go out. It waited for warm weather. However, the second seed ...
Thursday, March 5, 2009 by John

physics
A plumb bob does not hang exactly along a line directed to the center of the Earth's rotation. How much does the plumb bob deviate from a radial line at 38.5° north latitude? Assume that the Earth is spherical
Thursday, March 5, 2009 by mightymouse

Science
most inferences about the characteristics of earth's mantle and core are based on a. the behavior of seismic waves in earth's interior b. chemical changes in exposed and weathered metamorphic rocks
Wednesday, March 4, 2009 by Angie

Another astronomy (algebra-based physics) question
I’d prefer thorough solutions, but if you can only provide formulas that would solve each part of the problem, that’d be helpful too :-) Thanks! Spinning too fast The rate of rotation of astrophysical objects that are held together by gravity (e.g., stars or planets...
Wednesday, March 4, 2009 by Mark

Astronomy (algebra-based physics)
Extrasolar planets There are currently 340 known extrasolar planets, i.e., planets around other suns. Most of them we infer only by their gravitational pull on their host stars, and a handful appear to dim the light of their host star as they transit in front of the star. In ...
Wednesday, March 4, 2009 by Mark

Physics - solar power in space
Hi, this requires some basic knowledge of astrophysics. I missed last lecture that covered this, so though I'd prefer thorough solutions to these problems, I'd appreciate it even if you could tell me which formulas to use to solve each part of the problem. Thanks! NASA...
Wednesday, March 4, 2009 by Mark

geology(science) does this sound ok?
write a 200-300 word description of how these four subsystems interact with one another. In your response, identify one type of resource from each subsystem on which people depend. this is what i said..... The earths 4 subsystems are the following lithosphere, hydrosphere, ...
Sunday, March 1, 2009 by scooby91320002

SAT Essay
I owe my success to having listened respectfully to the very best advice, and then going away and doing the exact opposite. --G. K. Chesterton (1874 - 1936) Assignment: Are people held back by their adherence to the beliefs of the majority or doing things in the conventional ...
Sunday, March 1, 2009 by Sahil

Physics
Sorry to double pos, I just really need hlp whit this. You push an air-hockey puck along a surface with negligible friction while riding in a truck as it moves at a constant velocity in Earth's frame of reference. What do you observe? Why? I'm tempted to say that the ...
Sunday, March 1, 2009 by Katja

Physics
You push an air-hockey puck along a surface with negligible friction while riding in a truck as it moves at a constant velocity in Earth's frame of reference. What do you observe? Why? I'm tempted to say that the puck moves forward because that's all I can think of...
Sunday, March 1, 2009 by Katja

geology (science)
how does the earth's four subsystems (lithosphere, hydrosphere, biospehere, atmosphere) interact with one another?
Thursday, February 26, 2009 by scooby9132002

earth science
what are basic things that we should know about deposition?
Wednesday, February 25, 2009 by Anonymous

Science
How does the earth's tilt affects how directly light reaches different parts of the earth?
Wednesday, February 25, 2009 by Matt

earth science
What are the main basic thing that we need to know about erosion? some are like the agents, running water .... and please tell me some more...
Wednesday, February 25, 2009 by Anonymous

physics
A force of 40.0N is required to pull a 10.0kg wooden block at a constant velocity across a smooth glass surface on Earth. What force would be required to pull the same wooden block across the same glass surface on the planet Jupiter.
Sunday, February 22, 2009 by Rena

Science-please help
The gravitational force of the Earth acting on an object with more mass is stronger than the force on a smaller mass object of the same size, yet they both fall at the same rate of increasing speed (i.e. balls of different masses but with similar sizes fall to the ground at ...
Saturday, February 21, 2009 by Karen

Physics
why does an astronaut weigh less on the moon than on Earth? is it because the gravitational field strength is less on the moon's surface than on Earth's surface
Friday, February 20, 2009 by Bella

Science
If you look at a map of Earth's Plate Tectonics, is the Pacific Plate moving North?
Wednesday, February 18, 2009 by Angie

earth sciecne
which landscape region of NY is composed of low hills of sorted sediments of Cretaceous and Pleistocene age? 1 the hudson- mohawk lowlands 2 the atlantic coastal plain 3 the complain lowlands 4 the erie- ontario lowlands. is it 4
Tuesday, February 17, 2009 by Anonymous

Earth Science
Coastal areas are usually warmer in winter than areas inland because?
Tuesday, February 17, 2009 by Daniel

Physics
please check these for me Which of the following is not a fluid? a. carbon dioxide b. hydrogen c. seawater d. wood D Which of the following statements is not correct? a. a fluid flows b. a fluid has a definite shape c. molecules fo a fluid are free to move past each other d. a...
Sunday, February 15, 2009 by teamjakeward

social studies
Scientists think adding CO2 to the atmosphere will affect the earth's climate. What effect is predicted?
Friday, February 13, 2009 by nathaniel

physics
need HELP!! which of the following exhibits parabolic motion a. stone thrown into a lake b. space shuttle orbiting Earth c. leaf falling from a tree d. train moving along a flat track which of the following does NOT exhibits parabolic motion a. frog jumpping from land into ...
Thursday, February 12, 2009 by y912f

science
On Earth as a whole, what happens to most of the presipitation? 1 It recharges the soil moisture deflict. 2 it becomes runoff and moves o the oceans. 3 it is store in the soil as capillary oceans. 4 it is returned to the atmosphere through evaporation and transpiration.
Wednesday, February 11, 2009 by Anonymous

Astronomy
Two bodies with equal masses orbit the Sun in a circular orbit. If the radii of the two orbits are the same then following is true: a) The orbital period of the two bodies is the same because their masses are the same. b) Their orbital period of the two cannot be the same ...
Wednesday, February 11, 2009 by Alex

science
ok earth science what is a solstice and why do we have them?
Tuesday, February 10, 2009 by sammy

Earth Science
Why is the Colorado river in central nevada not part of a larger river system? Please help!! i am stuck in this quetion. Please help!!!!!!
Monday, February 9, 2009 by amanda

english
i am learning about capital letters in English and i need to write a sentence about Earth. i was just wondering if planet has to have a capital letter. Planet Earth or planet Earth which is right? thanks!
Saturday, February 7, 2009 by dancer

history/science
hi. i would like to know if someone can send me websites other than wikipedia that might be able to help me find out stories of how the earth and the things on earth were made...
Friday, February 6, 2009 by Trixie

earth science urgent
in the continental United States, what happens to rain that falls west of the Great Continenetal Divide? Rain that falls east?
Thursday, February 5, 2009 by Anonymous

science245
In genology (the earth) what are the two historical figures and the process of mantle convention and plate movement.?
Thursday, February 5, 2009 by dianne

Physics
please check: 1. A piece of chalk is dropped by a teacher walking at a speed of 1.5 m/s. From the teacher's perspective, the chalk appears to fall. STRAIGHT DOWN 2. Which is the force of an acceleration? FORCE 3. A free-body diagram of a ball falling in the presence of air...
Thursday, February 5, 2009 by y912f

Physics
Which of the following exhibits parabolic motion? a. a stone thrown into a lake b. a space shuttle orbiting Earth c. a leaf falling from a tree d. a train moving along a flat track what is parabolic motion? which would be a good choice? thanks alot for ur help
Thursday, February 5, 2009 by y912f

science
how are mercury and venus similar to earth?
Wednesday, February 4, 2009 by jada

8th Grade Space and Earth Science
I have two questions about my study guide for my science test tomorrow. Thank you for any answers that I can get! How does the atmosphere give evidence for divine design? How can a satellite telephone user communicate if radio waves reflect off the ionosphere? Perspiration ...
Tuesday, February 3, 2009 by Nicole C.

Physics
A box slides down a 30.0 degree ramp with an acceleration of 1.20 m/s^s Determine the coefficent of kinetic friction between the box and the ramp How on earth do I do this with only this amount of information???
Tuesday, February 3, 2009 by Physics

calculus
Use Newton's Law of Gravitation to compute the work W required to launch a 1500 kg satellite vertically to an orbit 800 km high. You may assume that the earth's mass is 5.98*10^24 kg and is concentrated at its center. Take the radius of the earth to be 6.37*10^6 m and ...
Tuesday, February 3, 2009 by matt

earth/science 245
Plate tectonics and earthquakes: what are the two historical figures and the process of mantle convection and plate movement.I understand that the whole continent moves but what is plate tectonics and the historical figures that contributed to the plate technonic theory and ...
Monday, February 2, 2009 by dianne

calculus
Use Newton's Law of Gravitation to compute the work W required to launch a 1500 kg satellite vertically to an orbit 800 km high. You may assume that the earth's mass is 5.98*10^24 kg and is concentrated at its center. Take the radius of the earth to be 6.37*10^6 m and ...
Monday, February 2, 2009 by matt

English
Can you please help me figure out what kind of writing this piece is considered? A Bill of Rights for Future Generations We, the people of the future, like the twenty thousand generations who came before us, have the right to breathe air that smells sweet, to drink water that ...
Monday, February 2, 2009 by Sabrina

9th grade
how many parts is earth's lithosphere divided into?
Saturday, January 31, 2009 by leelia

chem.
A bird is flying around the world at a rate of 26.4 ft/sec. How many days will it take to complete its journey? (circumference of earth = 25,000 miles)
Saturday, January 31, 2009 by ashley

chemistry
If a satellite orbits the earth at a velocity of 3.2 x 10⁶ km/hr, this would be the same as how many ft/s?
Saturday, January 31, 2009 by ashley

Physics
please check these: 1. which of the following statements applies to the motion of a ball rising and then falling in free fall? I.The ball has constant acceleration as it moves upward. II.The ball has constant acceleration at the top of its path. III.The ball has constant ...
Saturday, January 31, 2009 by y912f

Physics
Please check these answers[my letter choice is in CAPS]: 1. In the steps of the scientific method, what is the next step after formulating and objectively testing hypotheses? A. interpreting results b. stating conclusions c. conducting experiments d. making observations and ...
Friday, January 30, 2009 by y912f

Physics
i have just started physics, can someone please show me step by step how to do this: The radius of Earth is 6 370 000 m. Express this measurement in km in scientific notation with the correct number of significant digits. thank you for your help
Wednesday, January 28, 2009 by y912f

physics
The diameters of Earth and the Sun are approximately 1.3 107 m and 1.4 109 m respectively, and the average Sun-Earth distance is 1.5 1011 m. Consider a scale model of the solar system, where Earth is represented by a peppercorn 2.3 mm in diameter. Calculate the diameter of ...
Wednesday, January 28, 2009 by kj

science245
Scientists debate about the use of fossils as a tool to determine records of various events, such as the vanishing of the dinosaurs or the origin of our ancestors. Based on what you know of fossils from your textbook and other sources, discuss the role of fossils in helping ...
Tuesday, January 27, 2009 by dianne

science
i have a question and i have no answer to it..... How does atmosphetic pressure change as you move away from the surface of Earth. i think the answer is gravity, I THINK NOT S.U.R.E. OF IT......................................​................ thank ...
Monday, January 26, 2009 by elenny

st.louse
My task is to research the application of centrifuges for medical, forensic, and industrial purposes, and for testing and training humans. As an extension, im supposed to research and compare the use of centrifuges in space with Earth-bound centrifuges." I'm supposed ...
Sunday, January 25, 2009 by almutasem

earth science
how are well-developed soils similar to young soils? how are they different?
Saturday, January 24, 2009 by veronica

WG
i all ready did my work and i want to see if i got them right..... 1.what does a small blackened dot usually represent? Cities or towns. 2.which state contains the name of a country bordering united states? Canada. 3.what is the name given to the half of the earth that ...
Thursday, January 22, 2009 by hellen

Science
what is the source of energy entering Earth's atmosphere?
Thursday, January 22, 2009 by Emma

Science
what is the source of the energy in the greenhouse? what is the source of energy entering Earth's atmosphere?
Thursday, January 22, 2009 by Angie

Physics-Update
An asteroid heads for Earth at 12 km/s. In addition, a NASA space team is able to attach a rocket booster to the asteroid. The rocket booster fires for 10 min after which the asteroid is moving at 28 degrees to its original path to a speed of 20km/s. What is its average ...
Wednesday, January 21, 2009 by Harold

Physics
An asteroid heads for Earth at 12 km/s. In addition, a NASA space team is able to attach a rocket booster to the asteroid, which then allows the asteroid to move at 28 degrees to its original path to a speed of 20km/s. What is its average accleration for acceleartion at (x) ...
Wednesday, January 21, 2009 by Harold

earth science
how do i find how much water vapor is in the air when given relative humidity and an air sample that is 40 degrees C?
Wednesday, January 21, 2009 by efran

Physics
An asteroid heads for Earth at 12 km/s. In addition, a NASA space team is able to attach a rocket booster to the asteroid, which then allows the asteroid to move at 28 degrees to its original path to a speed of 20km/s. What is its average accleration for acceleartion at (x) ...
Wednesday, January 21, 2009 by Harold

U.S. History
please check these,my answers are in CAPS 1.Europeans fought the Crusades a. to establish new trade routes to the Indies b. to put limitations on European trade C. TO TAKE CONTROL OF JERUSALEM FROM MUSLIM TURKS d. to convert Muslims to Christianity 2.Slavery in Africa differed...
Tuesday, January 20, 2009 by y912f

earth science
what do two of the stars in the bowl of the big dipper point to ?
Tuesday, January 20, 2009 by Eddie

English-Repost
Hello! English is my second language, and at the moment, unfortunately, I don't have anybody who can read my paper since both my parents are not fluent in English. And I'm probably living on the other side of the earth, since it is now ten thirty pm. Anyways, what I ...
Tuesday, January 20, 2009 by Jennifer

7th grade
Why does air flowing down toward the Earth create high pressure?
Monday, January 19, 2009 by Gina

college
Suppose that it takes about 3 days for a space vehicle to travel from Earth to the moon. About how long would it take the same space vehicle traveling at the same speed to reach Pluto?
Monday, January 19, 2009 by q-tip

earth science please help ....
How would the seperation between the p wave and s wave arrival at Savannah, GA compare to the data from the seismograph recorded in chicago, Il. the recorded for the chicago is: CHicago: P wave arrival time: 08:57:45 pm s wave arrival time: 09:02:05 pm difference in arrival ...
Monday, January 19, 2009 by Anonymous

earth science
why is the arrival time for the p - wave earlier that the arrival of the s-wave the same seismograph station?
Sunday, January 18, 2009 by Anonymous

French
Hi there, can you see if i have translated the english djibouti anthem correctly into French. Djibouti National Anthem Arise with strength; for we have raised our flag, The flag which has cost us dear With extremes of thirst and pain. Our flag, whose colours are the ...
Saturday, January 17, 2009 by Regina

trigonometry
A satellite is orbiting the Earth in a circular orbit. It orbits the Earth 3 complete revolutions every 24 hours. How many radians does it travel in 19 hours? i think its 19pi radians or 19/2pi radians im kinda conufsed about what i did..need help
Friday, January 16, 2009 by y912f

trigonometry
i have posted this question up alot of times before but i guess no one gets it because no one ever replies.. find the latitude of Spokane, WA if Spokane and Jordan Valley, OR, 43.15degN, are 486 km apart. (assuming that the cities lie on the same norht-south line and that the ...
Thursday, January 15, 2009 by y912f

6th grade science
1. earth has only a limited amount of land, yet land is a renewable resource, why? 2. trees are renewable resources, but some forests are not, why? 3. compare and contrast minerals and ores. 4. how could using ores contribute to an increase in air pollution?
Tuesday, January 13, 2009 by johnnetta

earth science...help
for this question: Put the folloing words together in a few sentence to explain their meaning and relationship to one another: seismic waves, seismograms, seismoghaps, and seismologists. is this answer suitable: Seismic wave is an elastic shock wave that travels through the ...
Tuesday, January 13, 2009 by Anonymous

science
Does the total amount of oxygen adoms on the earth increase or decreace over time? Explain.
Monday, January 12, 2009 by gaby

Physical Science
Explain the importance of the water cycle to survival of the earth's organisms?
Monday, January 12, 2009 by Jennifer

Science-Weather
which statement best explain wy the greenhouse effect incrases earth's average temperature? a. CO2 has a high latent heat b. less infrared raditon escapes to outer space. c. More incoming solar radation is aborbed by the atmosphere. d. less incoming solar radiation is ...
Monday, January 12, 2009 by Twilight lover

chemistry
If you had one mole of pennies to divide among all the people in the world, how many dollars would each person receive? Use 5thousand as the population of Earth. how do you find how many pennies are in one mole?
Sunday, January 11, 2009 by sh

Math
The diameter of Earth is about 8,000 mi. Suppose a jet is traveling around Earth at an altitude of 30,000 ft. How many miles will the jet travel in a complete circle aroung Earth? a. 94,247.8 mi. b. 25,156.7 mi. c. 38,000 mi. d. 8,005.7 mi.
Sunday, January 11, 2009 by Dylan

Science (weather & climate) -
I just wanted to post this question once more. I have to go offline soon. Please go over my answers. Thanks True or false: 7.Eruptions fom volcanoes decrease global temperatures. I answered false because volcanes spew out CO2 into the atmophere. The 16._________-sphere affects...
Sunday, January 11, 2009 by Twilight lover

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Homework Help: Science