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Homework Help: Science: Earth

Recent Homework Questions About Earth

Earth Science
Assume that the lower troposphere is isothermal with a temperature TA. An airparcel at the surfaceis heated isobarically to a temperature of T0 and then released and allowed to ascend dryadiabatically. Assume that the buoyancy is the only force acting on the parcel and that ...
Tuesday, November 8, 2016 by Angela

Physics
What is the angular speed of the earth as it orbits the sun a) in radians/second? b) in degrees per day?
Monday, November 7, 2016 by Anonymous

Physics
What is the reaction of the earth pulling down on a pen that is lying on a table
Monday, November 7, 2016 by Mark

English
roxie 1. Choose the answer that best matches the word in italics. Use context clues to determine the meaning of the word, if necessary. The decorations were reminiscent of autumn leaves. (1 point) leftovers made reminders symbolic 2. Choose the answer that best matches the ...
Monday, November 7, 2016 by PLEASE HELP

Physics
Suppose that instead of our sun, our star were a giant star such as Betelgeuse. The mass of Betelgeuse is estimated to be about 20 times that of our sun. With earth in the same orbit? With its same mass, how long would our year be in earth days if we orbited Betelgeuse?
Monday, November 7, 2016 by Matt

Physics
A) the earth year is 365.25 days long. How long would our year be if earth followed the same orbit, but was only the mass of Mars? Answer this in earth days. B) How long would our year be if earth were the same mass, but had the orbital distance of mercury Answer this in earth...
Monday, November 7, 2016 by Matt

Physics
At a height of 500km above earth, a satellite will orbit the earth once every 95 minutes. Find the mass of the earth based on this idea. B) How far above earth's surface would a satellite need to orbit so that it revolves at exactly the same rate as the earth's rotation?
Monday, November 7, 2016 by Matt

Earth Science
1. The water cycle is the _____. A. distribution of drinking water on Earth ?**? B. unending circulation of Earth's water supply ?**? C. the recycling of water after industrial use ?**? D. the evaporation of water from Earth's surface ?**? 2. Plants release water into the ...
Sunday, November 6, 2016 by PleaseHelpMe777

Physics
Calculate the force of earths Gravity on a 2.00 earth radii above the earth surface if it's mass is 1850kg.
Sunday, November 6, 2016 by Stuck

physics
A bomber drops a bomb from an aircraft flying at 2000Km/h with an altitude of 7 Km. The speed at which the bomb will strike the earth would be. a) Greater than 2000Km/h b) Less than 2000 Km/h c) Equal to 2000 Km/h d) Can not compare with the given data
Sunday, November 6, 2016 by Ghulam muhammad

AP physics
The earth moves faster in its orbits around the sun in January, or in July? Explain [Note: this is not much of a factor in producing seasons - the main factor is the tilt of the earths axis relative to the plane of its orbit.]
Sunday, November 6, 2016 by Stuck

AP physics
The sun is below us at a magnitude of nearly a line with the earth center. Are we then Heavier at midnight due to the sun's gravitational force on us, than we are at noon? Explain
Sunday, November 6, 2016 by Stuck

Physics
Why is more fuel required for spacecraft to travel from the earth to the moon than to return from the moon to the earth?
Sunday, November 6, 2016 by Stuck

Physics
Does an apple exert a gravitational force on the earth? If so, how large a force? Consider an apple (a) Attached to a tree and (b) falling.
Sunday, November 6, 2016 by Stuck

Earth Science
1.) What is the relationship between temperature and the rate at which antacid tablets react with water? 2.) Form a hypothesis about the relationship between temperature and the rate of chemical weathering. 3.) Would a limestone building weather more rapidly in Homer, Alaska, ...
Saturday, November 5, 2016 by PleaseHelpMe777

phisics
The earth is , on average 150 million km from the sun calculate its average speed in orbit?
Saturday, November 5, 2016 by wahid

Calculus - Falling Body Problem
Near the surface of the earth, the acceleration of a falling body due to gravity is 32 feet per second per second, provided that air resistance is neglected. If an object is thrown upward from and initial height of 3000 feet with a velocity of 75 feet per second, find its ...
Friday, November 4, 2016 by Jamie

Physics
At the surface of a certain planet, the gravitational acceleration g has a magnitude of 12.0 m/s^2. A 21.0-kg brass bell is transported to this planet. What is (a) the mass of the brass ball on the Earth and on the planet, and (b) the weight of the brass ball on the Earth and ...
Friday, November 4, 2016 by Luce

Physics
At what altitude above the Earth's surface is the gravitational field strength equal to g/7? .981 = -(1.0003322(6,371/6,371+h))^2)
Wednesday, November 2, 2016 by Denise

Science 7
1. A student studying a circuit diagram of a lightbulb, battery, and a switch correctly identifies it as a closer circuit. In this diagram, The lightbulb would be a. an insulator b. on*** c. disconnected d. off 2. The focus of gravity on an object on the surface of Mars is ...
Tuesday, November 1, 2016 by cat

english
1.  Choose the answer that best m​atches the word in italics. Use co​ntext clues to determine the meaning of the word, if necessary. The decorations were reminiscent of​autumn leaves. (1 point) leftovers made reminders symbolic 2...
Tuesday, November 1, 2016 by Aalyah

Science
Imagine Two Artificial Satellites Orbiting Earth At The Same Distance. One Satellite Has A Greater Mass Than The Other One? Which Of The Following Would Be True About Their Motion? A.The satellite with the greater mass is being pulled toward Earth w/ less of a force than the ...
Monday, October 31, 2016 by cat

Science
Imagine Two Artificial Satellites Orbiting Earth At The Same Distance. One Satellite Has A Greater Mass Than The Other One? Which Of The Following Would Be True About Their Motion? A.The satellite with the greater mass is being pulled toward Earth w/ less of a force than the ...
Monday, October 31, 2016 by carolina del la cruz

English
In the story “If I Forget Thee, Oh Earth…” why did Marvin’s father take him to see the view of earth from The Colony? A. The Colony had just discovered earth as a new planet in their galaxy, and he wanted to share the exciting news. B. He wanted Marvin to understand ...
Monday, October 31, 2016 by need help now

HELP WITH SCIENCE FAST
1.  Most likely, ____ were formed​when lava from the moon's interior​ flooded bowl­like regions on the moon's surface. (1 point) maria* highlands craters basins 2.  Currently, the most supported ​theory of the origin of the ...
Monday, October 31, 2016 by help

Physics
Which are in static equilibrium? 1. A box sliding down a ramp. 2. A baseball after being hit. 3. A box sliding along a horizontal surface. 4. A perfectly upright freely spinning top 5. A freely swinging simple pendulum 6. A spinning astronaut floating out in deep space. 7. A ...
Sunday, October 30, 2016 by Jerry

Chemistry
A good vacuum pump on Earth can produce a vacuum with a pressure as low as 1.96 × 10-8 torr. How many molecules are present in each milliliter at a temperature of 23.0ºC?
Friday, October 28, 2016 by Hunter

Social Studies
Which of the following is a characteristic of Earth's first people? A. They lived in cold places B. They lives far from water sources C. They lived on the Asian continent D. They moved around in search of food** How do people in northern Chad adapt to the lack of arable land ...
Friday, October 28, 2016 by Anonymous

Physics
You're tour director for a lunar trip, and want to award your passengers with certificates commemorating their crossing the point where the Moon's gravity becomes stronger than Earth's.How far from Earth should you award the certificate? Express your answer in meters.Express ...
Thursday, October 27, 2016 by Emma

Earth Science
20. Contrast point source pollution and nonpoint source pollution. Can someone help me please?!?!?! Asap please?!?!?!?!
Thursday, October 27, 2016 by Just a confused person...

Science
What distance was used to define the astronomical unit (AU) A. the average distance across the sun, its diameter B. the average distance from the sun to mercury, the closest planet C. the average distance from the sun to earth, our home planet D. the average distance from the ...
Wednesday, October 26, 2016 by Brook

Ap physics
Determine the mass of the earth from the known period and the distance of the moon
Tuesday, October 25, 2016 by Marc

english 9
Read the conclusion about “The Beginnings of the Maasai,” and then answer the question. One purpose of “The Beginnings of the Maasai” is to explain the weather. Which excerpt best justifies this conclusion? The sky god is powerful, but can change from nurturing to ...
Tuesday, October 25, 2016 by madison

Math
A year on Mars is 1.88 Earth years. If you are 13 years old on Earth, how old would you be on Mars? I don't know if I am supposed to multiply or divide. I also don't understand what the question is trying to state. Thanks
Tuesday, October 25, 2016 by Anonymous

georgraphy
In the following passage written by a conquistador in 1540, what can you infer about how sick citizens were treated? “No one who was lazy or tried to live by the work of others was tolerated; everyone had to work. Thus on certain days each lord went to his lands and took the...
Monday, October 24, 2016 by Jay

MATH HELP
Monica stepped outside and began to think how fast she is moving even when she is standing still. Assume that the earth is a sphere with a radius of 3960 miles and Monica is at a latitude of 13∘N. What is Monica's speed due solely to the rotation of the earth in miles ...
Monday, October 24, 2016 by Carly

Math
Monica stepped outside and began to think how fast she is moving even when she is standing still. Assume that the earth is a sphere with a radius of 3960 miles and Monica is at a latitude of 13∘N. What is Monica's speed due solely to the rotation of the earth in miles ...
Monday, October 24, 2016 by Todd

Mathematics
Monica stepped outside and began to think how fast she is moving even when she is standing still. Assume that the earth is a sphere with a radius of 3960 miles and Monica is at a latitude of 13∘N. What is Monica's speed due solely to the rotation of the earth in miles ...
Monday, October 24, 2016 by Sal

Math
Monica stepped outside and began to think how fast she is moving even when she is standing still. Assume that the earth is a sphere with a radius of 3960 miles and Monica is at a latitude of 13∘N. What is Monica's speed due solely to the rotation of the earth in miles ...
Monday, October 24, 2016 by Anonymous

math please
Before electricity, nights in towns and fields were often times pitch black, except when there was a full moon. How many times brighter is the noonday sun than the full moon when the moon is at the closest point to the earth? Model the moon as a sphere of radius 1,000 miles (1...
Sunday, October 23, 2016 by Dip

science
assuming the earth to be a sphere of uniform density,what will be the value of g in a mine 100th below the earth surface.Given r=6400 km and g=10m/s.
Sunday, October 23, 2016 by Aditya

Physics
Weight of an object on the surface is 100N . What will we it's weight a planet whose mass 10times that of earth and radius is 3 times as that of earth??
Sunday, October 23, 2016 by Rani solanki

physics
The center of a 1.00km diameter spherical pocket of oil is 1.00kkm beneath the Earth's surface. Estimate by what percentage g directly above the pocket of oil would differ from the expected value of for a uniform Earth? Assume the density of oil is 8.0*10^2kg/m^3. Δg/g = ? %
Saturday, October 22, 2016 by katie bornia

physics
Question 6) Oil and gas exploration companies find new underground deposits by measuring (with incredible precision) the value of g at the Earth's surface. EXTRA INFO GIVEN: The challenge: F=Gm1m2/r^2 ONLY works for two cases: point masses, or if one of the masses has ...
Saturday, October 22, 2016 by katie bornia

Science
suppose a skydiver (mass = 75 kg) is falling toward the earth. when the skydiver is 100 m above the earth he is moving at 60 m/s. at this point calculate the skydiver's
Saturday, October 22, 2016 by Michelle

earth science
Compare the formation processes of igneous, sedimentary, and metamorphic rocks. In general, which process can be the most direct, requiring the fewest number of steps? Which can be the most complex? I am guessing igneous rocks are the easiest because the formation process ...
Friday, October 21, 2016 by sasha

physics qui
The radius of the Earth is 6.37×1000000 m and its average dencity is 5.517×1000kg/m×m×m.calculate​ the mass of earth to correct significant figures.
Friday, October 21, 2016 by Anonymous

Science
For many years it was believed by geologists that the location of the continents was fixed.These scientists believed that the locations of the continents was determined many billions of years ago,as the young Earth cooled down from its original state as a ball of molten lava....
Thursday, October 20, 2016 by Donald

science
What is the geologic time scale and what are some thing scientists use it for (at least two things)? Here's my answer could you please verify. the geologic time scale is a record of the geologic events and life forms in Earth’s history. Scientists use it to understand the ...
Thursday, October 20, 2016 by John

english
In An Inconvenient Truth Earth is called the Goldilocks planet because A) The sun is at a balanced distance B) It has a significant wildfire population C) It's neither too hot or too cold for life D) The mineral content, especially cold and gold. I think it's C or A
Wednesday, October 19, 2016 by Dude

8th grade math
The diameter of the sun is approximately 1.4x10 to the power 9 km and the diameter of earth is approximately 1.28 x10 to the 4th power km. About how many times earths diameter is the suns diameter. Write in scientific notation.
Tuesday, October 18, 2016 by Mythreyee

Science Earth
Label the year and name of each geologic area on your geologic time scale. Using the 1 cm = 10 million years scale, figure out and measure each distance below from the PRESENT line. Pre-Cambrian Era = 4.6 Billion years ago = _______________________ cm from PRESENT What would ...
Tuesday, October 18, 2016 by Ayaka

Environmental Science please help
True or False ~~~~~~~~~~~~~~~~ 1.Most familiar life-forms live in regions of biomes that humans inhabit. (True) or False 2.Biodiversity is the variety of life-forms that exist or existed in the past. True or (False) 3.Changes in an organism can't occur because of an outside ...
Saturday, October 15, 2016 by GummyBears18

Physics
Al the astronaut has a weight of 1600 N when he is standing on the surface of earth. What is the force of gravity action on him when he is in space station orbiting earth at a distance of four earth radii from the center of the earth?
Friday, October 14, 2016 by Beth

Physics
If you jumped off a 25 meter cliff on the moon (gravity being 1.66) what would be a comparable hight of that cliff on earth? the answer and show me how to get it.
Thursday, October 13, 2016 by bobby mg

environmental science
1. which of the below is an example of high-quality matter found near the earth's surface? a. natural gas b. mine tailings c. bauxite (al ore) d. recyclable materials in a landfill e. nitrogen gas in the atmosphere
Wednesday, October 12, 2016 by jj

Physics
What changed Newton's original work on the movement of the Moon around the Earth into the law of universal gravitation? 1) his conclusion that the same laws applied to all objects, no matter how small 2) his connection of gravitation to his first law 3) his connection of ...
Wednesday, October 12, 2016 by Sue

Science
What does Asimov predict will happen to earth in billions of years? a. it will be burned up by the sun b. its population will increase*** c. it will shrink slightly in size d. it will change position in the galaxy Am I correct?
Wednesday, October 12, 2016 by Sami

Chemistry
What are the elements in Group A1 on the periodic table? alkali metals alkali earth metals inner transition metals ** halogens
Wednesday, October 12, 2016 by Selena

physics
Calculate the effective value of g, the acceleration of gravity (in meters/second^2), at 8600 km above the earth's surface.
Monday, October 10, 2016 by kassy

physics
Find the force of gravity (in newtons) on a spacecraft 15100 km above the earth's surface, if its mass is 400 kg
Monday, October 10, 2016 by kassy

phyics
How far (in meters) above the earth's surface will the acceleration of gravity be 34.0 % of what it is on the surface?
Monday, October 10, 2016 by kassy

Physics
A 54100 kg space ship has completed two thirds of its journey from the earth to the Moon. At this position, what magnitude force would the ship's engines have to supply to be the equilibrant? Assume the mass of the moon is 7.35E + 22 kg and the distance between the earth and ...
Monday, October 10, 2016 by Sally

Earth science
If the volume in a graduated cylinder is raised from 50ml to 51 ml, what is the objects volume?
Sunday, October 9, 2016 by Chris

Math
Is your weight on different planets affected by gravity an object that weighs 150 pounds on Earth weighs only 56.55 pounds on Mars the same object weighs only 24.9 pounds on the moon what percent of an object Earth weight is its weight on Mars and the Moon
Sunday, October 9, 2016 by Anais

physics
What changed Newton's original work on the movement of the Moon around the Earth into the law of universal gravitation? 1) his conclusion that the same laws applied to all objects, no matter how small 2) his connection of gravitation to his first law 3) his connection of ...
Sunday, October 9, 2016 by Betty

physics
This figure shows the force on a 0.1-kilogram mass at various distances from Earth. Notice that the force decreases as the square of the distance. Now, consider satellites A and B, both circling Earth. If A has ten times the mass of B but B is 1/10 of the distance to the ...
Sunday, October 9, 2016 by Sue

physics
What changed Newton's original work on the movement of the Moon around the Earth into the law of universal gravitation? 1) his conclusion that the same laws applied to all objects, no matter how small 2) his connection of gravitation to his first law 3) his connection of ...
Saturday, October 8, 2016 by Jessica

physics
What is the acceleration due to gravity at a distance of one Earth radius above the Earth's surface
Saturday, October 8, 2016 by Kathy

physics
A 540 kg satellite orbits at a distance from the Earth's center of about 5.4 Earth radii. What gravitational force does the Earth exert on the satellite
Saturday, October 8, 2016 by Kathy

physics
What is the acceleration due to gravity at a distance of one Earth radius above the Earth's surface
Saturday, October 8, 2016 by Katelyn

physics
Please help! The planet Mercury has a radius of about 0.38 Earth radii and a mass of only 0.055 Earth masses. Estimate g on Mercury
Saturday, October 8, 2016 by Beth

physics
What two facts did Newton need to be able to calculate the acceleration of the Moon? 1) the distance to the Moon and the diameter of the Moon. 2) the time it takes the Moon to make one revolution and the distance from the Earth to the sun. 3) the diameter of the Moon and the ...
Saturday, October 8, 2016 by Sue

Physics
Which two factors mainly affect ocean tides on Earth? Check two answers. Earth's revolution about both the Moon and the Sun the Moon the Sun the pull of distant planets
Friday, October 7, 2016 by dave

Physics
If you were in an elevator what should the acceleration of the elevator be in order for you to feel what you would weigh on the martian surface(remember that acceleration is a vector, so it has both magnitude and direction)? (weight on earth=130 lbs, weight on mars=49 kg, ...
Friday, October 7, 2016 by Evette

Physics
a) Calculate the acceleration due to gravity on the planet Mars. I found this to be about 3.7 m/sec^2 b) What would your weight be on the planet Mars if you weighed 130 lbs? c) If you could jump vertically 5 ft on earth, how high would you be able to jump on mars? I'm just ...
Thursday, October 6, 2016 by Evette

Math
How do I solve the following word problem : A satellite orbits Earth in a circular path with equation x squared + y squared = 1.44 times 10 to the power of 8. With distances measured in kilometers. Another satellite orbiting in the same plane passes through the point (8000,...
Thursday, October 6, 2016 by Jodie

beast mode question
Beastmode Question You see me twice a minute, thrice an hour and geometrically equal to the time elapsed. If the sun rise at x m/sec and the cloud run through the sky at y m/sec, find the maximum RADIUS OF THE EARTH.
Thursday, October 6, 2016 by zeff

Geography
During the formation earth , from where does the water came ?
Thursday, October 6, 2016 by Tamaq

physics
What two facts did Newton need to be able to calculate the acceleration of the Moon? 1) the distance to the Moon and the diameter of the Moon. 2)the time it takes the Moon to make one revolution and the distance from the Earth to the sun. 3)the diameter of the Moon and the ...
Wednesday, October 5, 2016 by Betty

Science Check my work PLS
Why do scientists use models of natural systems? (1 point) Scientists use models of natural systems because these systems are often too large, too small, or too complex to study directly**** Scientists use models of natural systems because they like to use art in science. ...
Tuesday, October 4, 2016 by Bohdi

Earth Science
which two criteria must be met before scientists can use radiocarbon dating? I need serious help dudes lol
Tuesday, October 4, 2016 by Lol

physics
What two facts did Newton need to be able to calculate the acceleration of the Moon? A) the distance to the Moon and the diameter of the Moon B) the time it takes the Moon to make one revolution and the distance from the Earth to the sun C) the diameter of the Moon and the ...
Monday, October 3, 2016 by Sue

english
Please answer the following from An Inconvenient Truth 11. Earth is called the Goldilocks planet because a.the sun is at a balanced distance b.it has significant wildlife population c.it is neither too hot nor too cold for life** d.of the mineral content, especially coal and gold
Monday, October 3, 2016 by oto

math
The distance that light travels in 1 year (a light year) is 5.88 times 10 Superscript 12 miles. If a star is 4.6 times 10 Superscript 7 light years from Earth, what is this distance in miles? Enter your answer in scientific notation. Round the coefficient to two decimal places...
Monday, October 3, 2016 by Anyno.

Math115
The distance that light travels in 1 year (a light year) is 5.88 times 10 Superscript 12 miles. If a star is 4.6 times 10 Superscript 7 light years from Earth, what is this distance in miles? Enter your answer in scientific notation. Round the coefficient to two decimal places...
Sunday, October 2, 2016 by Brita

physics
In these figures, we see a boy named Billy riding a carnival ride called the Rotor and the free-body diagram for the forces acting on him. What must be the magnitudes of the vectors (f)wall,Billy and (W)Earth,Billy if Billy remains at the same height along the wall? 1) The ...
Sunday, October 2, 2016 by Betty

Science, NATS
Consider the following chemical reaction. Molecular hydrogen and carbon dioxide react to form water and methane. H2+CO2-->H2O+CH4 A)Explain why this equation is not balanced and what law of nature does it break in its current form? B) Astronauts from the Earth carry large ...
Saturday, October 1, 2016 by David

Physics
When an item has been launched into orbit, what happens? 1: It continues to fall but its path never reaches the ground. 2: Centripetal force from Earth's gravity keeps it from being accelerated toward Earth. 3: It no longer falls because the weakness of Earth's gravity with ...
Saturday, October 1, 2016 by Beth

Physics
Please help..... When something is thrown over a large distance (on earth ) what new factor comes into play? 1- The decrease in gravity over long distance 2- The increase in gravity over long distance 3- The tendency of thrown objects to fall to the ground 4- The difference ...
Saturday, October 1, 2016 by Jessica

Trigonometry
Assume that Earth's surface is a sphere of radius 12000/pi miles. In an hour how far can Felix "Travel" if he is stationary at a position on the equator?
Saturday, October 1, 2016 by Saint

Science
a stone mass of 2.5kg is falling a certai height. Find the force of attraction between the earth and the stone. Also find its acceleration
Saturday, October 1, 2016 by Vivek

physics
Earth of mass 6×10^24 kg is in motion around the sun with a linear velocity of magnitude 30 km/s. a) Determine the magnitude of the linear momentum of the center of mass of Earth. b) Is this linear momentum conseved?
Friday, September 30, 2016 by angy

Physics
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. (a) Assuming the earth is a sphere with a radius of 6.38 106 m, determine the speed of a person situated at the equator. (b) What ...
Friday, September 30, 2016 by Ryan

Physics
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. (a) Assuming the earth is a sphere with a radius of 6.38 106 m, determine the speed of a person situated at the equator. My ...
Friday, September 30, 2016 by Ryan

pre-calc
The radius of the earth is approximately 4,000 miles. The acceleration due to gravity is approximately 32 feet per square second. The mass of the earth is approximately 6 × 10^24 kilograms. Calculate the value of G in units of kilograms, meters, and seconds.
Friday, September 30, 2016 by Math

miami dade
a student designed an experiment to demonstrate the interactions between earth systems
Friday, September 30, 2016 by tjames

Chemistry
You want to heat 1 kg of water 10 degrees celsius and you have the following methods under consideration. The heat capacity of water is 4.184 J/K g. (a) You can heat it with a mechanical eggbeater that is powered by a 1-kg mass on a rope over a pulley. How far does the mass ...
Thursday, September 29, 2016 by Joesph

physics
The drawing (not to scale) shows one alignment of the sun, earth, and moon. The gravitational force that the sun exerts on the moon is perpendicular to the force that the earth exerts on the moon. The masses are: mass of sun=1.99 × 1030 kg, mass of earth=5.98 × 1024 kg, mass...
Thursday, September 29, 2016 by BrookeNeed

Science , Earth , Waterce , Earth , Waterce
How can I answer this question? Draw an overall conclusion: how does water compare to other substances? Why do you think so? Please help me...
Wednesday, September 28, 2016 by CC

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Homework Help: Science

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