Tuesday
February 21, 2017

Homework Help: Science: Earth

Recent Homework Questions About Earth

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

physics
Find the gravitational acceleration if a spaceship at a distance equal to double of earth's radius from the center of the earth (g on earth is 9.8 m/s^2)
Wednesday, September 28, 2016 by pruthviraj

science
Find the gravitational acceleration if a spaceship at a distance equal to double of earth's radius from the centre of the earth (g on earth is 9.8 m/s^2)
Wednesday, September 28, 2016 by pruthviraj

physics
An airplane is flying above the Earth's surface at a height of 10.5 km. The centripetal acceleration of the plane is 16.4 m/s2. What is the angular velocity of the plane moving in uniform circular motion? Take the radius of the earth to be 6400 km.
Tuesday, September 27, 2016 by jasmine

Physics
1. You apply a force of 11.8 N on a 5.1 kg object, pushing it horizontally across a surface where the coefficient of kinetic friction is 0.44. (a) Determine the frictional force acting. (b) Determine the object's acceleration. 2. A container of mass 0.5 kg slides along the ice...
Tuesday, September 27, 2016 by Shawn

Science
The mass of astromout measured on earth in 8500g. What will be his weight on earth
Sunday, September 25, 2016 by Matred

science
1. If person weighs 176 lbs on earth what is his or her mass on mars where the force of gravity is 37% of that on earth. With Complete solution
Sunday, September 25, 2016 by sky

Biology
Explain the structure of a water molecule and how hydrogen bonding leads to some of its very special properties. Be sure to include how these properties are important to life on Earth
Saturday, September 24, 2016 by Kayla

Physics
"You can jump 2 feet vertically on Earth. Figure out how high you would be able to jump on the Moon, where acceleration due to gravity is ⅙ that of Earth. Assume you launch upwards with the same speed on the Moon as you do on the Earth." I've already measured how high I ...
Saturday, September 24, 2016 by BunBun

Science
You can jump 2 feet vertically on Earth. Figure out how high you would be able to jump on the Moon, where acceleration due to gravity is ⅙ that of Earth. Assume you launch upwards with the same speed on the Moon as you do on the Earth." I've already measured how high I ...
Saturday, September 24, 2016 by BunBun

SCIENCE
The intensity of solar radiation at the surface of the earth is 1kW/m2 . A roof has a square solar panel of sides 10m that absorbs the radiation completely. What is the average force exerted on the panel?
Saturday, September 24, 2016 by OWOLABI

Physics
Given the masses of the sun and earth are 1.99x10^30 kg and 5.98x10^24 kg respectively. Calculate the gravitational force between them when their centers are 1.50x10^11m apart
Friday, September 23, 2016 by Yasmin

physics
A pendulum is formed of a particle of mass 100g suspended from the end of an inextensible string of negligible mass and of length L=100cm. The pendulum is shifted by an angle of 60 degrees from its equilibrium position about a horizontal axis passing through the other end of ...
Wednesday, September 21, 2016 by vicky

english poetry
What effect does Bryant’s use of personification of nature have on the theme of the poem "Thanatopsis"? Thanatopsis William Cullen Bryant (1794 – 1878) To him who in the love of Nature holds Communion with her visible forms, she speaks A various language; for his gayer ...
Wednesday, September 21, 2016 by collin

physics
A pendulum is formed of a particle of mass 100g suspended from the end of an inextensible string of negligible mass and of length L=100cm. The pendulum is shifted by an angle of 60 degrees from its equilibrium position about a horizontal axis passing through the other end of ...
Wednesday, September 21, 2016 by vicky

Math
An aeroplane flies at an average speed of 950km/hr from town P(lat.40degreeS, long.29.5degreeW) due east to town Q and then due south to town R. If the distance from Q to R along their common longitude is 4,500km and the whole journey took 11 hours, calculate longitude of Q ...
Wednesday, September 21, 2016 by Anonymous

physics
A homologous rod of mass M=20kg of length L=3m and of negligible cross-section rests initially on the horizontal ground chosen as a reference level for the gravitational potential energy. The rod is rotated about one end until it takes a vertical position . Calculate the ...
Monday, September 19, 2016 by angy

Physics
The Earth is about 81 times more massive than the moon. During the gravitational interation of the Earth and the Moon, the magnitude of the gravitational force acting on the Earth _______ the gravitational force acting on the Moon. A) is greater than B) is less than C) is the ...
Sunday, September 18, 2016 by Anonymous

math
The orbital velocity of a satellite is given by v=√GM/R+h, where G= 6.67*10^-11 Nm^2kg^2, is the Universal Gravitational Constant, M=6*10^24 kg, is the mass of Earth, R=6.38*10^3 km, the orbit of the satellite, and h is artificial satellite above the surface of Earth. ...
Sunday, September 18, 2016 by John Dosley

math
The orbital velocity of a satellite is given by v=√GM/R+h, where G= 6.67*10^-11 Nm^2kg^2, is the Universal Gravitational Constant, M=6*10^24 kg, is the mass of Earth, R=6.38*10^3 km, the orbit of the satellite, and h is artificial satellite above the surface of Earth. ...
Sunday, September 18, 2016 by John Dosley

Physics
A skydiver is falling to earth.  When he is traveling at 51.3 m/sec, he opens his parachute, and after 3.00 seconds he reaches the speed of 4.30 m/sec.  The remaining 60 seconds before landing is spent traveling downward at the speed of 4.30 m/sec.  What is his acceleration...
Sunday, September 18, 2016 by Tara

scince
Mars=750N the value of g is 38% of that of earth what is the mass of the men on the earth and his weight of mars
Sunday, September 18, 2016 by Rahul gupta

Geography
Why do we get to see only side moon🌕from the earth🌎?
Saturday, September 17, 2016 by Sakshi s.

Maths Exponents
(1) 11×10^-5 .Express it in scientific notation. (2)The distance between sun☉ and earth🌎 is (1.496×10^11)m and the distance between earth 🌎 and moon 🌙 is (3.84×10^8)m.During solar eclipse moon comes in between earth and sun.At that time what is...
Saturday, September 17, 2016 by Vivek

Science
Please help me with my sciene? 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? (...
Thursday, September 15, 2016 by eannaL

earth and science
what continent lies between 20 and 60 degress north lattitude and between 160 and 50 degrees west longtitude
Wednesday, September 14, 2016 by ana

Physics
The average distance of sun is 1.496 ×10^11m from the earth.Express the distance in light year and par second.
Wednesday, September 14, 2016 by Sanyogita

Science
The weight of a body on the surface of the earth is 392N .What will be the weight of this body on a planet whose mass is double that of the earth and radius is four times that of the earth
Wednesday, September 14, 2016 by Saranah

uv,,math
find the distance between the cities,,assume that thee earth is a sphere radius of 4000 miles at that cities are on same longitude, one city is due north of the order,,,San Francisco California has 37 degree 47'36" while Seattle,Washington 47 degree 37'18"
Wednesday, September 14, 2016 by glenn

Science
Assume that a spacecraft can travel at the speed of 100,000 km, how many days will it take to get from Earth to Mars?
Tuesday, September 13, 2016 by Ryan

biology
Which of the following is the definition of ecology? -the social movement with a goal to protect the environment -the recycling of human-made materials to reduce the waste going into landfills -the study of interactions among organisms and between organisms and their ...
Tuesday, September 13, 2016 by oto

Science
What the force of attraction between earth and objects on earth surface pesanteur..I need it English
Sunday, September 11, 2016 by jaseanturner1017

Chemistry
For my lab, I have been asked to calculate the pKa of an unknown amino acid. We titrated the unknown amino acid with NaOH. The pKa needs to be calculated using the Henderson Hasselbach Equation. Obviously you can just get the pH from any point on the graph but what values do ...
Friday, September 9, 2016 by Eleanor

Physics
a ship is headed towards east at a thrust speed of 7.00 knots. A strong wind pressure causes the ship to deviate to the north at 1.00 knots. The sea current is flowing to the southwest at 4.00 knots. Determine the velocity of the ship relative to the earth's surface.
Thursday, September 8, 2016 by Julie

Physics
A student with mass 55 kg jumps off a high diving board. Using 6.0×10^24 kg for the mass of the earth, what is the acceleration of the earth toward her as she accelerates toward the earth with an acceleration of 9.8 m/s2 ? Assume that the net force on the earth is the force ...
Wednesday, September 7, 2016 by Howard

Physics
The average distance between the earth and the sun is 1.50X10^8 A. calculate the average velocity in km/h of the earth along its original path The average distance between the earth and the sun is 1.50X10^8 B. convert your answer from km\h to m\s. Show all units.
Wednesday, September 7, 2016 by Layton

astronomy
At your telescope, you measure the parallax of the star Regulus to be one-half of the parallax of the star Denebola. What do you immediately know about their relative distance from us? a) That Regulus is further away than Denebola. b) That Regulus is closer than Denebola. c) ...
Wednesday, September 7, 2016 by kay

physics
How do the laws of physics apply to others sciences such as biology chemistry and earth science? And give an example to show the connection.
Tuesday, September 6, 2016 by nulloa

Science
Radius of the earth is 6400km and g is 9.8 m÷s find the value of g produced on a mass of 20 kg at a distance of 10000km from the earths surface ?
Tuesday, September 6, 2016 by sonika

Astronomy
An astronomical unit can be thought of as... a 25 light years b 19 earth years c 93 million miles d 100 billion miles
Tuesday, September 6, 2016 by Red

Math
The circumference of earth is about 40,030.02km. The formula for circumference is c=2(3.14)r.jennifer determines the radius of earth is about 12,700km.use estimation to determine if Jennifer measurement is reasonable.
Monday, September 5, 2016 by Kari

English Writing
People believe in God because... And there is life on earth because... And people who believe in God think that God has put human beings on this earth because... Could you help me? I'm not English speaker so I don't know how can I write continue of these sentences...
Monday, September 5, 2016 by CC

reading
The National Aeronautics and Space Administration (NASA) has just released some startling information. The Earth's temperature reached its highest point in 136 years of record-keeping during July. "July 2016 was absolutely the hottest month since the instrumental records began...
Sunday, September 4, 2016 by ali

Science Earth
Guard cells are closed during the night. This means that no gases can come in or out of the stomata. Why would the plant not need to take in gas during the night? How can I answer in this question?
Sunday, September 4, 2016 by CC

English Writing
Please help me... People believe in God because... And there is life on earth because... And people who believe in God think that God has put human beings on this earth because... I have to write continue of these sentences... Could you guys help me please?
Sunday, September 4, 2016 by CC

science help pls pls
The table below shows the average distances of Jupiter and Earth from the sun. Name of Planet Average distance from the sun (in AU) Jupiter 5.2 Earth 1.0 What is the difference between the orbital periods of Jupiter and Earth? 4.20 years 6.20 years 8.86 years 10.86 years 12.40...
Thursday, September 1, 2016 by Oscar

biology
which of the following is consistent with the theory of vitalism ? A.all matter contains a vital force** b.the chemistry of life and nonlife are similar c. living things contain a vital force absent in nonliving things d. life must be sustsained through a series of chemical ...
Thursday, September 1, 2016 by 9th grader

biochemistry
which of the following is consistent with the theory of vitalism ? A.all matter contains a vital force** b.the chemistry of life and nonlife are similar c. living things contain a vital force absent in nonliving things d. life must be sustsained through a series of chemical ...
Thursday, September 1, 2016 by 9th grader

English
Choose the best action or situation. An example of a metonym for the planet earth. soil globe rock moon Answer: globe
Tuesday, August 30, 2016 by Kimmy

One more thing!
Day had broken cold and gray, exceedingly cold and gray, when the man turned aside from the main Yukon trail and climbed the high earth-bank, where a dim and little traveled trail led eastward through the fat spruce timberland. It was a steep bank, and he paused for breath at ...
Tuesday, August 30, 2016 by Chloe

physics
Find the density of the earth if its mass is 6×10^3kg and radius is 6.4×10^3km
Monday, August 29, 2016 by cadaawe

Math
A 120Ib person would weight about 20Ib on the earth's moon. A 150 Ib person would weight 28I Ib on lo, a moon of Jupiter. Use ratio table to determine which make a person weight the most
Thursday, August 25, 2016 by Jasi

English
Just out of curiosity, is it okay to use the phrase "and so" in a sentence? Like "Johnathan knew that he had to help the boy asking a question on Jiskha. And so, he did just that, and the boy went on to being the happiest boy on earth." I just need to know if "and so" is a ...
Sunday, August 21, 2016 by Stephen

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Homework Help: Science