Saturday
July 2, 2016

Homework Help: Science: Earth

Recent Homework Questions About Earth

Algebra
Radio signals travel at a rate of 3*10^8 meters per second. How many seconds would it take for a radio signal to travel from a satellite to the surface of Earth if the satellite is orbiting at a height of 4.2*10^7 meters? (Hint: Time is distance divided by speed.) a. 1.26*10^...
Thursday, March 3, 2016 by Kaai97

Algebra
Astronomers measure large distances in light-years. One light-year is the distance that light can travel in one year, or approximately 5.88 × 10*12 miles. Suppose a star is 9.8 × 10^1 light-years from Earth. In scientific notation, approximately how many miles is ...
Wednesday, March 2, 2016 by Kaai97

Science
Tomorrow I have the midterm (Lab-Earth Science) on 1 Minerals Igneous Rocks Sedimentary Rocks 2 Topographic Maps 3 Geologic Time Help with this, please.
Wednesday, March 2, 2016 by Julius Caesar

Language
Miracles Walt Whitman, 1819 - 1892 Why, who makes much of a miracle? As to me I know of nothing else but miracles, Whether I walk the streets of Manhattan, Or dart my sight over the roofs of houses toward the sky, Or wade with naked feet along the beach just in the edge of the...
Wednesday, March 2, 2016 by Fisher

Geography and Society
What is the primary function of Earth's atmosphere? a. to trap heat from the sun b. to shield the planet from harmful radiation*** c. to disintegrate space debris before it reaches the surface d. all of the above
Tuesday, March 1, 2016 by Kaai97

Language
more facebook twitter tumblr embed poem add to anthology print Miracles Walt Whitman, 1819 - 1892 Why, who makes much of a miracle? As to me I know of nothing else but miracles, Whether I walk the streets of Manhattan, Or dart my sight over the roofs of houses toward the sky, ...
Tuesday, March 1, 2016 by Fisher

Earth Science
How does altitude affect climate (beyond just temperature)?
Tuesday, March 1, 2016 by Anonymous

Language
more facebook twitter tumblr embed poem add to anthology print Miracles Walt Whitman, 1819 - 1892 Why, who makes much of a miracle? As to me I know of nothing else but miracles, Whether I walk the streets of Manhattan, Or dart my sight over the roofs of houses toward the sky...
Tuesday, March 1, 2016 by Fisher

physics
An artificial Earth satellite, of mass 3.00 × 10^3 kg, has an elliptical orbit, with a mean altitude of 500 km. (a) What is its mean value of gravitational potential energy while in orbit? (b) What is its mean value of orbital kinetic energy? (c) What is its total energy...
Monday, February 29, 2016 by Jonathan

physics
a 55 kg satellite is in circular orbit earth with an orbital radius of 7.4 x 10^6 m . determine the satellite’s a)kinetic energy b)gravitational potential energy c)total energy d)binding energy
Monday, February 29, 2016 by john

physics
You throw a 0.15 kg ball straight upward from ground level with an initial speed of 15 m/s. (Yes, from ground level. This is to make the calculations easier. If it bothers you, imagine you are standing in a dugout.) Your friend throws a 0.09 kg lump of clay upward after it. ...
Sunday, February 28, 2016 by Shelby

science
a man has a mass of 80,0 kg is standing on the surface of the earth. a )calculate the magnitude of the attractive force (gravity) that the earth exerts on the man.(784n) b)how does your answer in a) compare to the magnitude of the force that the man exerts on earth? c)use your...
Sunday, February 28, 2016 by mamare

Math
I need help please. the mean distance of earth from the sun is 92,960,000 which is 258% of the mean distance of mercury from the sun. What is mercury’s mean distance from the sun in ten millions of miles?
Sunday, February 28, 2016 by Beth

Math
I need help please. the mean distance of earth from the sun is 92,960,000 which is 258% of the mean distance of mercury from the sun. What is mercury’s mean distance from the sun in ten millions of miles?
Sunday, February 28, 2016 by Beth

physics
help me please. *TRUE or FALSE* 1.the north pole of a permanent magnet is attracted to a south pole 2.iron,aluminum, and nickel are all ferromagnetic materials 3.all permanent magnets are surrounded by a magnetic field 4.the direction of a magnetic field is indicated by the ...
Sunday, February 28, 2016 by Charlene

Language Arts
Why, who makes much of a miracle? As to me I know of nothing else but miracles, Whether I walk the streets of Manhattan, Or dart my sight over the roofs of houses toward the sky, Or wade with naked feet along the beach just in the edge of the water, Or stand under trees in the...
Saturday, February 27, 2016 by Riley

PHYSICS
please.!PLEASe PLEASE. help me. TRUE or FALSE 1.the north pole of a permanent magnet is attracted to a south pole 2.iron,aluminum, and nickel are all ferromagnetic materials 3.all permanent magnets are surrounded by a magnetic field 4.the direction of a magnetic field is ...
Saturday, February 27, 2016 by Clifford

Physics
help me to my homework please.!PLEASe PLEASE. TRUE or FALSE 1.the north pole of a permanent magnet is attracted to a south pole 2.iron,aluminum, and nickel are all ferromagnetic materials 3.all permanent magnets are surrounded by a magnetic field 4.the direction of a magnetic ...
Saturday, February 27, 2016 by Shelle

Language Arts, Ms. Sue please help me!
Why, who makes much of a miracle? As to me I know of nothing else but miracles, Whether I walk the streets of Manhattan, Or dart my sight over the roofs of houses toward the sky, Or wade with naked feet along the beach just in the edge of the water, Or stand under trees in the...
Friday, February 26, 2016 by Anonymous

Science HELP PLS
how are earth and venus similar? how is venus different from earth? provide two similarities and two differences
Friday, February 26, 2016 by Zach

Physics
anybody help me to my homework please.!thanks TRUE or FALSE 1.the north pole of a permanent magnet is attracted to a south pole 2.iron,aluminum, and nickel are all ferromagnetic materials 3.all permanent magnets are surrounded by a magnetic field 4.the direction of a magnetic ...
Friday, February 26, 2016 by Shelle

Physics
If the mass of a planet is 0.103 times that of the Earth and its radius is 0.592 times that of the Earth, estimate the gravitational field g at the surface of the planet. The gravitational acceleration on Earth is 9.8 m/s2. Answer in units of m/s2
Thursday, February 25, 2016 by Luhan

Physics
What is the magnitude of the momentum of the 0.057-kg tennis ball when it travels at a speed of 29 m/s? Earth is the frame of reference.
Thursday, February 25, 2016 by Emily

physics
An astronaut has a mass of 60kg.what is her weight here on earth
Thursday, February 25, 2016 by eshal

physics
A horizontal ,straight wire carying 12.0A current from west to east is in the earth's magnetic field B.At this place,B is parallel to the surface of the earth ,points to the north and its magnitude is 0.04mT.Determine the magnetic force on 1m length of the wire.If mass of ...
Thursday, February 25, 2016 by gourav bhardwaj

Poetry 7 - Check please!
Why, who makes much of a miracle? As to me I know of nothing else but miracles, Whether I walk the streets of Manhattan, Or dart my sight over the roofs of houses toward the sky, Or wade with naked feet along the beach just in the edge of the water, Or stand under trees in the...
Wednesday, February 24, 2016 by Ezra

physics
Osmium is the densest metal on earth. It has a density of 22.61 g.cm–3. Which of the following best represents this density in kg.m–3?
Wednesday, February 24, 2016 by junior

technology
An eco-friendly home-building company has asked you to create their logo. Which of the following color schemes would work best to enhance the perception that their company is Earth-friendly? (1 point) Correct answer (1 pt) green and brown Unselected answer (0 pts) red and ...
Wednesday, February 24, 2016 by hahaha

Language
Miracles Walt Whitman, 1819 - 1892 Why, who makes much of a miracle? As to me I know of nothing else but miracles, Whether I walk the streets of Manhattan, Or dart my sight over the roofs of houses toward the sky, Or wade with naked feet along the beach just in the edge of the...
Wednesday, February 24, 2016 by Tj

Science
About what percent of all of Earth's fresh water is found in ground water, streams, lakes, and rivers?
Wednesday, February 24, 2016 by Sue

physics of grade 11
Consider a simple pendulum consisting of a small marble of mass 10 g that can be onsidered a point mass suspended from the lower end of an inextensible string of length 80 cm and whose mass is negligible. The upperstring is connected to a fixed point O .The pendulum is shifted...
Wednesday, February 24, 2016 by angy

science help
A scientist uses a computer model to understand a widely accepted theory about Earth's surface. The computer model would most likely help the scientist to... A. reduce the intensity of earthquakes B. discover new facts about the theory C. stop the creation of faults during...
Tuesday, February 23, 2016 by Oscar

Physics
Sally has a mass of 50.0kg and earth has a mass of 5.98X10^24kg. The radius of earth is 6.371x10^6m. A)What is the force of gravitational attraction between sally and earth? B)What is Sally's weight?
Monday, February 22, 2016 by Sam

Science
Why are there so many different species on earth today?
Monday, February 22, 2016 by Sue

Physics
At 6400 km above the earth’s surface, an object weighing 71 N on the surface would weigh only 18 N. Acceleration due to gravity will be about ¼ that on the surface of the earth.
Monday, February 22, 2016 by Joaquin

Earth Science
Why are there so many different species on Earth today?
Monday, February 22, 2016 by Mike

SCIENCE PLZ HELP
when are tides in earths oceans the highest? during the moons waning gibbous phase during the moons waxing gibbous phase when the moon is at the right angle of the sun when the sun, Earth, and moon are in a line.
Sunday, February 21, 2016 by K.CUndercoverNeedsHelpAndAlsoHelpsPeople

physics
A bag of sugar weighs 3.00 lb on Earth. What would it weigh in newtons on the Moon, where the free-fall acceleration is one-sixth that on Earth? N Repeat for Jupiter, where g is 2.64 times that on Earth. N Find the mass of the bag of sugar in kilograms at each of the three ...
Sunday, February 21, 2016 by mary

physics
A bag of sugar weighs 3.00 lb on Earth. What would it weigh in newtons on the Moon, where the free-fall acceleration is one-sixth that on Earth? N Repeat for Jupiter, where g is 2.64 times that on Earth. N Find the mass of the bag of sugar in kilograms at each of the three ...
Sunday, February 21, 2016 by lisa

English (Check)
Below each of the passages from Sinners in the Hands of an Angry God, list the type of literary device(s) employed and explain how the passage exemplifies the device(s). 1. Were it not for the sovereign pleasure of God, the earth would not bear you one moment...There are black...
Saturday, February 20, 2016 by Victoria

phy 231
It takes 23 hours 56 minutes and 4 seconds for the earth to make one revolution (mean sidereal day). a.What is the angular speed of the earth? I got 7.292x10^-5 rad/s b.Assume the earth is spherical. Relative to someone on the rotation axis, what is the linear speed of an ...
Saturday, February 20, 2016 by Andrea

Earth science
Why didn't the early geologic time scale include the number of years ago that events happened?
Friday, February 19, 2016 by Sue

Earth Science
why didn't the early geologic time scale include the number of years ago that events happened?
Friday, February 19, 2016 by Sue

math
The atmospheric pressure P(h) (in pounds per square inch) at a height h (in miles) above sea level on Earth satisfies a differential equation P' = -kP for some positive constant k. (a) Measurements with a barometer show that P(0) = 1.2 and P(9) = 0.7. What is the decay ...
Thursday, February 18, 2016 by MAin

physics
A bag of sugar weighs 3.00 lb on Earth. What would it weigh in newtons on the Moon, where the free-fall acceleration is one-sixth that on Earth? N Repeat for Jupiter, where g is 2.64 times that on Earth. N Find the mass of the bag of sugar in kilograms at each of the three ...
Thursday, February 18, 2016 by lisa

Science
Can someone please check my answers? I would greatly appreciate it. Thanks! 1. Which of the following inner planets has virtually no atmosphere? a. Mercury*** b. Venus c. Mars d. Earth 2. Which of the following statements about the inner planets is true? a. They all have rings...
Thursday, February 18, 2016 by Blair

Earth science
A scientist wants to determine the age of a rock. The rock contains an index fossil and an ancient relative of a living organism. Which is more useful for dating the rock, and why? Answer: an ancient relative of a living organism would be more useful for dating the rock ...
Wednesday, February 17, 2016 by Sue

HELP
answers marked below 1. Which of Earth’s spheres contains most of its mass? (1 point) atmosphere hydrosphere geosphere biosphere 2. Erosion and weathering are examples of which types of forces? (1 point) constructive forces destructive forces gravitational forces inertia-...
Wednesday, February 17, 2016 by BROOKLYN HAYES

Science
*NEED HELP ASAP* TIA Hi everyone! If you could help me I would really like that! Question: Suppose the moon rotated on its axis just as quickly as Earth. Would you still always see the same side of the moon from Earth?
Tuesday, February 16, 2016 by May

Basic electricity
A body having a mass of 4.5kg is supported 30kg above earth surface calculate the portential energy take 10kg?
Tuesday, February 16, 2016 by Gideon

Science
When are tides in earth's oceans the highest? A. during the moon's waning gibbous phase. B. during the moon's waxing gibbous phase C. when the moon is at a right angle to the sun*** D. when the sun, Earth, and moon are in line
Monday, February 15, 2016 by Angel

Earth Science
If we were to increase atmospheric CO2 fivefold by the burning of fossil fuels, how much would the atmospheric oxygen concentration change relative to what it is today? Assume: (a) CO2 concentration today is 400 ppm, (b) the atmosphere today is made of 21% oxygen, and (c) the ...
Monday, February 15, 2016 by Marisa

science
the radius of planet x is twice that of the earth and its mass is also twice that of the earth. The gravitational acceleration on planet x would be approximatley?
Sunday, February 14, 2016 by thabo

math
A person weighs 120pounds on earth weighs 20 pounds on the moon how much does a 90 pound persob weigh on the moon
Saturday, February 13, 2016 by Raheem

Physics
determine the point of zero gravitation force, as measured from the centre of earth (mass 5.97 x 10^24 kg) to the sun ( mass 1.99 x 10^30 kg) if the earth-sun distance is 150 x 10^6 km.
Saturday, February 13, 2016 by S

science
Just checking my answers.. 1. Which is not a characteristic of the Group 1 alkali metals? A. high densities B. low melting points*** C. found in batteries D. silvery solid 2. Which of the following is true of the Group 2 alkali earth metals? A. They are less dense than the ...
Friday, February 12, 2016 by Anon.

Science
As a raindrop falls from a cloud to the surface of Earth, A.its speed increases due to gravity. B.its speed increases due to air resistance. C.t moves at a constant speed. D.>it moves at a constant velocity I think it is A. Am i right??
Friday, February 12, 2016 by -_- . _-_

languege
in what way are miracles and "in just-" different "Miracles" WHY! who makes much of a miracle? As to me, I know of nothing else but miracles, Whether I walk the streets of Manhattan, Or dart my sight over the roofs of houses toward the sky, Or wade with ...
Friday, February 12, 2016 by jjiiddss

Biology ASAP
What is the scientific name ( genus and species level) of star fish, jelly fish, silk spider, mouse, and earth worm
Thursday, February 11, 2016 by Natasha

Mrs. Sue , Reed! Someone!
the subject is Geologic time. I was wondering if someone could check my answers please Sand or gravel that naturally forms near Earth's surface is known as A. pollen. B. ore. C. aggregate. (D. bedrock.) When new clay sediment is deposited on top of old beach material, it&#...
Wednesday, February 10, 2016 by Jocelynn

Science
Sand or gravel that naturally forms near Earth's surface is known as A. pollen. B. ore. C. aggregate. (D. bedrock.) When new clay sediment is deposited on top of old beach material, it's known as A. regression. (B. transgression.) C. progression. D. aggression.
Wednesday, February 10, 2016 by Jocelynn

Earth Science
Which of the following climates is most suited for physical weathering? A. Warm B. Dry (C. Hot) D. Cool What latitudes are most likely to see glaciers? (A. 90° N and 90° S) B. 30° N and 30° S C. 45° N and 45° S D. 10° N and 10° S
Tuesday, February 9, 2016 by Jocelynn

Earth Science
Which of the following climates is most suited for physical weathering? A. Warm B. Dry (C. Hot) D. Cool What latitudes are most likely to see glaciers? (A. 90° N and 90° S) B. 30° N and 30° S C. 45° N and 45° S D. 10° N and 10° S
Tuesday, February 9, 2016 by Jocelynn

Earth Science
What are the two most common minerals located in Earth's crust? (A. Feldspar and quartz) B. Iron and copper C. Diamonds and gold D. Salt and saline Climatology is a subspecialty of A. environmental science. B. oceanography. (C. meteorology.) D. marine biology.
Tuesday, February 9, 2016 by Jocelynn

Physics
A tank holds 135 moles of argon gas (atomic mass = 6.633521 × 10^-26 kg) at a pressure of 101300 Pa and a temperature of 302K. Recall that the number of gas molecules is equal to Avagadros number (6.022 × 10^23) times the number of moles of the gas 1) What is the ...
Tuesday, February 9, 2016 by Billy

Science
1. Which type of eclipse would you expect to see if the moon passes directly between Earth and the sun? (1 point) a solar eclipse a lunar eclipse a total lunar eclipse a penumbra 2. Which of the following statements about a lunar eclipse is true? (1 point) A lunar eclipse can ...
Monday, February 8, 2016 by Mettaton ex

Science
List at least three atmospheric properties that might change as you traveled from the Earth's surface to space. Temperature, gases, air pollutants?
Friday, February 5, 2016 by Anonymous

i really need help and i dont ask alot so plzz
I NEED HELP WITH THIS its a TEST: 1. Which of Earth’s spheres contains most of its mass? (1 point) atmosphere hydrosphere geosphere biosphere 2. Erosion and weathering are examples of which types of forces? (1 point) constructive forces destructive forces gravitational ...
Friday, February 5, 2016 by the girl that has no friends

World History
Which statement supports the claim that the political philosophy of John Locke was as revolutionary as the scientific revolution of Copernicus? *****a. Just as Copernicus replaced the Earth with the Sun at the center of the solar system, Locke replaced the individual with the ...
Friday, February 5, 2016 by Please Help!

Physics help
1. The fundamental force that: (4 marks) ____ 1. causes hair to stand on end after being rubbed by a balloon a) strong nuclear ____ 2. causes protons to remain in the nucleus despite repulsive forces b) weak nuclear ____ 3. controls the planets' orbit around the sun c) ...
Thursday, February 4, 2016 by Matt Damon

science help PLS
An astronomer see a star that is very far away but still very bright. What can she conclude about the star? The star must be very large. The star must be very small. The star must be moving away from Earth. The star must be moving closer to Earth.
Thursday, February 4, 2016 by Oscar

Social Studies
In what way is geography an integrative science? a. Geography is an integrative science because it examines Earth in both physical and human terms.*** b. Geography is an integrative science because it borrows from physical sciences such as chemistry, biology, meterology, and ...
Thursday, February 4, 2016 by Kaai97

Social Studies
What does “geography” mean in literal sense? a. the study of the human elements of Earth b. to describe Earth*** c. the study of the physical elements of Earth d. none of the above
Thursday, February 4, 2016 by Kaai97

PLEASE CHECK IF THEY ARE CORRECT!!! THANKS
1. Which layer of the sun's atmosphere are you looking at when you look at an image of the sun? Photosphere Chromosphere*************** Corona Prominence 2. Which of the following materials could have been found in the giant cloud that formed the solar system? Hydrogen and...
Thursday, February 4, 2016 by Girl with questions.

Algebra
Your weigh on the moon is about 1/6 of your weigh on earth. Write and solve an equation to show how much a person weighs on earth if he weighs 16 lbs. on the moon .
Wednesday, February 3, 2016 by Ella

physics
It has been suggested, and not facetiously, that life might have originated on Mars and been carried to Earth when a meteor hit Mars and blasted pieces of rock (perhaps containing primitive life) free of the surface. Astronomers know that many Martian rocks have come to Earth ...
Monday, February 1, 2016 by tom

physics
Mars has a radius of about 0.38 Earth radius and a mass of only 0.11 Earth mass. Estimate the acceleration due to gravity on Mars.'
Monday, February 1, 2016 by ang

physics
Mars has a radius of about 0.38 Earth radius and a mass of only 0.11 Earth mass. Estimate the acceleration due to gravity on Mars.
Monday, February 1, 2016 by ang

Science
What is the centripetal acceleration a satellite is orbiting the Earth at an altitude of 300.22 km?
Monday, February 1, 2016 by Jack

geology
list down six techniques used to transfer heat from the earth crust to the surface by fluid circulation
Monday, February 1, 2016 by kasiama

earth science
The global ocean covers about 70% of the Earth’s surface. If all the ocean water was uniformly distributed over the whole surface, what would be its depth? Assume that the Earth is a perfect sphere, and the average ocean depth is 4 km.
Sunday, January 31, 2016 by Marisa

engineering
In many engineering uses, the value of �g�, the acceleration due to gravity, is taken as a constant. However, g is actually dependent upon the distance from the center of the Earth. A more accurate expression for g is: g=g0(Re/Re+A)^2 Here, g0 is the ...
Sunday, January 31, 2016 by Seth

physics
Imagine a parallel universe in which the electric force has the same properties as in our universe but there is no gravity. In this parallel universe, the sun carries charge Q, the earth carries charge −Q, and the electric attraction between them keeps the earth in orbit...
Sunday, January 31, 2016 by jack

Science
An artificial satellite circles around the earth at the height where the gravitational force is one fourth of that at earth's surface. If the earth's radius is R the height of the satellite above the surface of the earth is?
Sunday, January 31, 2016 by Shubham

analytic geometry
1. The orbit of the earth is an ellipse with the sun at a focus, the semi-major axes 93 million miles and the eccentricity is 1/60. Find the greatest and least distance of the earth from the sun. 2. A battle shipping is sailing at a straight line towards east at 40km/hour from...
Saturday, January 30, 2016 by sylvia

Sociology
For question #3, reference the videos "History of the Most Cajun Place on Earth"and “Music & Culture in the Most Cajun Place on Earth” A) Briefly describe the formation of the Cajun culture as an American subculture in the context of historical events and ...
Friday, January 29, 2016 by Rae

Physics
On earth, two parts of a space probe weigh 14500 N and 6400 N. These parts are separated by a center-to-center distance of 19 m and may be treated as uniform spherical objects. Find the magnitude of the gravitational force that each part exerts on the other out in space, far ...
Friday, January 29, 2016 by Melanie

English
Crossing the Sea A verdant rain forest rises out of the ocean to snow-capped peaks. Powerful fiords snake their way into glacial valleys. Rivers roar and meadows blossom. Many consider the land of New Zealand to be among the most beautiful places on Earth for centuries that ...
Thursday, January 28, 2016 by Kaai97

English
Crossing the Sea A verdant rain forest rises out of the ocean to snow-capped peaks. Powerful fiords snake their way into glacial valleys. Rivers roar and meadows blossom. Many consider the land of New Zealand to be among the most beautiful places on Earth for centuries that ...
Thursday, January 28, 2016 by Kaai97

Physics
an airplane has a velocity of 499 km/h relative to the moving air. at the same time, a wind blows northward with a speed of 87 km/h relative to the earth. the airplane is moving in an easterly direction relative to the earth. find speed of airplane to relative to earth.
Thursday, January 28, 2016 by S

Science
Check my answers!! Plz 1. What would happen to an object if the force of gravity on Earth was decreased by half? (1 point) Its mass would decrease. Its weight would decrease.* Its density would decrease. Its volume would decrease. 2. Which of the following represents a ...
Thursday, January 28, 2016 by Vanessa

English
In the movie "Like Stars on Earth," we can see the names 'Nikumbh' and ' Awasthi.' They are main characters in the Indian movie. How do you pronounce the two names? Do you pronounce 'bh' in Nikumbh'?
Thursday, January 28, 2016 by rfvv

language arts
Label as Cause & Effect 1. (Effect) When dropped, cats land on their feet. (Cause) Cats are extremely agile creatures 2. (Cause) Few mammals can care for themselves at birth. (Effect) Most mammals are born immature 3. (Effect) The sun has a powerful gravitational force (Cause...
Wednesday, January 27, 2016 by NEED HELP -

Science Plzz correct me!!!
What would happen to an object if the force of gravity on Earth was decreased by half? (1 point) Its mass would decrease. Its weight would decrease.* Its density would decrease. Its volume would decrease. 2. Which of the following represents a heterogeneous mixture? (1 point) ...
Wednesday, January 27, 2016 by Samantha

Science
1. What would happen to an object if the force of gravity on Earth was decreased by half? (1 point) Its mass would decrease. Its weight would decrease.* Its density would decrease. Its volume would decrease. 2. Which of the following represents a heterogeneous mixture? (1 ...
Wednesday, January 27, 2016 by Samantha

science
why does the sun appear to move westward across the sky during the day? a) because earth rotates to the east b) because earth rotates to the west c) because the sun moves in a westerly direction d) because of the way you are looking into the sky
Wednesday, January 27, 2016 by need help

Physics
A 6.80 x 10^4 kg space shuttle moving at 7.90 x 10^4 m/s reenters the earth's atmosphere 80.0 km above the earth's surface. What is the shuttle's total mechanical energy with respect to earth's surface? I know the answer is E= 2.173 x 10^12J But I don't ...
Wednesday, January 27, 2016 by Danny

Physics
An 1750 kg weather satellite moves in a circular orbit with a gravitational potential energy of 1.69 x 10^10 J. At it's location, free-fall acceleration is only 6.44 m/s^2. How high above Earth's surface is the satellite?
Tuesday, January 26, 2016 by Selena

science help PLS
Which of the following correctly describes a way in which Earth’s atmosphere interacts with the hydrosphere? Living organisms breathe gases in the atmosphere. Water moves between Earth’s surface and the atmosphere. Gases in the atmosphere trap incoming solar ...
Monday, January 25, 2016 by Oscar

World History
How is Egypt and Ancient China different based on Religion and Philosophy (EXAMPLES: religious beliefs and practices, ideas regarding humans, life on earth and/or the after life) They are alike in many ways (polytheistic religion, Both believe there is life after death) but I ...
Monday, January 25, 2016 by WillWork4Help

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Homework Help: Science