Saturday
October 1, 2016

Homework Help: Science: Earth

Recent Homework Questions About Earth

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 × ...
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...
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 ...
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...
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; ...
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 ...
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 ...
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 ...
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 ...
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 ...
Sunday, August 21, 2016 by Stephen

chemestry
the Earth has mass of approximately 5.98* 10^24kg and radius 6.38* 10^6m. what is the density of the Earth in (a)g/cm^3 and (b) kg/m^3 ?
Saturday, August 20, 2016 by kelly

Maths Algebra
Mass of Earth is (5.97×10^24)kg and Mass of Moon is (7.35×10^22)kg.What is the Total mass of the two?
Friday, August 19, 2016 by Vivek

Maths Algebra
The diameter of Sun is (1.4 ×10^8)m and the diameter of Earth is (1.2742×10^4)m . Show that the diameter of sun is nearly 100 times the diameter of Earth.
Friday, August 19, 2016 by Vivek

language arts - Ms. Sue, please check
“Lord of the Rings” is an epic fantasy adventure set in the world of Middle Earth. The story opens when Bilbo Baggins, an elderly hobbit, give his beloved nephew, Frodo, a plain gold ring. Then Bilbo disappears. Soon, Frodo is visited by strange beings, including a ...
Wednesday, August 17, 2016 by Trish

L.A., Please Check
“Lord of the Rings” is an epic fantasy adventure set in the world of Middle Earth. The story opens when Bilbo Baggins, an elderly hobbit, give his beloved nephew, Frodo, a plain gold ring. Then Bilbo disappears. Soon, Frodo is visited by strange beings, including a ...
Wednesday, August 17, 2016 by Trish

physics
calculate the escape velocity of a satellite from the earth's gravitational field,if the radius of the earth is 6.4×10^6m
Wednesday, August 17, 2016 by john

physics math
A cruise ship moves southward in still water at a speed of 20.0 km/h, while a passenger on the deck of the ship walks toward the east at a speed of 5.0 km/h .The passengers velocity with respect to Earth is?
Tuesday, August 16, 2016 by himel

Physics
The earth has a radius of 6380 km and turns around once every 24 hours. What is the average speed of a person resting at the equator?
Tuesday, August 16, 2016 by Jamhie

physics
a woman who weighs 150 lb. on earth would weigh 340 lb. on another planet, what is her mass on earth, what is her mass on the other planet, what is the magnitude of the gravitational field on the other planet
Thursday, August 11, 2016 by Brad

Science
It can be inferred from the passage that radioactive dating is important for estimating the age of A) all known meters B) all existing planets C) the earth D) the trees
Thursday, August 11, 2016 by Shelby

Geography
What happens when we move vertically upwards from the earth
Tuesday, August 9, 2016 by Daksh

math
The ratio of an objects weight on earth to its weight on Neptune is 5:7. How much would a person who weighs 150 pounds on earth weigh on Neptune? A.210 pounds B.750 pounds c.107 1/7 pounds D.170 pounds
Tuesday, August 2, 2016 by jeneva

Science
40 degrees north runs along 146th street on the north side of Indianapolis. What is the rotational velocity of the surface of the earth at 40 degrees north?
Friday, July 29, 2016 by A Bailey

Science
When did the first human exist? And when did they start populating the earth?
Wednesday, July 27, 2016 by Isaiah

Physics
If you weigh 670 N on the earth, what would be your weight on the surface of a neutron star that has the same mass as our sun and a diameter of 15.0 km ? Take the mass of the sun to be ms = 1.99×1030 kg , the gravitational constant to be G = 6.67×10−11 N&#...
Friday, July 22, 2016 by Ane

Physics
A second's pendulum is taken on the surface of moon where acceleration due to gravity is 1/6th of that of earth.Will the time period of pendulum remain same or increase or decrease?Give a reason.
Wednesday, July 20, 2016 by Yashasvi

Math
The earth takes 365 1/4 days to go around the sun. Mercury takes 3 days less than 1/4 of this time. How many days does Mercury take to go around the sun? I believe I would have to find 1/4 of the 365 1/4 days then take 3 days out. I was given this do as home work but was not ...
Tuesday, July 19, 2016 by Arianna

Physics
Horizontal electric power lines supported by vertical poles can carry large currents. Assume that Earth’s magnetic field runs parallel to the surface of the ground from south to north with a magnitude of 0.50××10^-4 Tesla and that the supporting poles are 38 m...
Tuesday, July 19, 2016 by Mike

math
If earth rotates at about 1000 mph and it rotates constantly each day. How many rotations will it complete after 4th hour, 8th hour and 24th hour.
Sunday, July 17, 2016 by gieian

Science
If you weigh 300 N on earth, then what is your mass and weight in mars?
Thursday, July 14, 2016 by Charlaine

physics
the acceleration of free fall on the moon is one sixth of that on earth. what would be the period on the moon of a simple pendulum which has a period of one second on the earth?
Saturday, July 9, 2016 by SUBHAN

science
A simple pendulum with bob of mass m and conducting wire of length L swings(is hanging ) under gravity thro' an angle 2theetha. The earth's magnetic feild component in the direction perpendicular to swing is B. the max potential diff induced across pendulum is?
Thursday, July 7, 2016 by somya

Physics
An astronaut wearing a spacesuit can jump 0.5 m vertically at the surface of the earth. The gravitational acceleration on Mars is 0.4 times that on the earth. If her takeoff velocity is the same, how high can the astronaut jump on Mars?
Wednesday, July 6, 2016 by Mathusha

Biology
1. When and where was the first cell born? How did it happen? 2. What are the circumstances that make the appearance of the cell in this earth? 3. What are the differences between prokaryotic and eukaryotic cell? How about plant and animal cell?
Sunday, July 3, 2016 by mike

Physics
A planet with density equal to Earth is 2R times far away from earth, if we double the distancs from 2R to 4R then "g" becomes:-
Saturday, July 2, 2016 by Sagar

Physics
A satellite orbits the Earth with a radius of 7000km. The acceleration of gravity at this distance=8.17m/s/s. How do I find the velocity of the satellite? I'm really struggling with finding the correct formula. I know the answer but can't figure out how to get there. ...
Wednesday, June 29, 2016 by Leslie

science
How Do the Earth's Four Subsystems Work Together?
Wednesday, June 29, 2016 by LESTER

Physics
I'm really struggling trying to understand what formulas to use for the following: A satellite orbits the earth with a radius of 7000 km. (a) what is the acceleration of gravity at this distance? (b) what is the velocity of the satellite? (c) how long does it take the ...
Wednesday, June 29, 2016 by Anna

Physics
I'm really struggling trying to understand what formulas to use for the following: A satellite orbits the earth with a radius of 7000 km. (a) what is the acceleration of gravity at this distance? (b) what is the velocity of the satellite? (c) how long does it take the ...
Tuesday, June 28, 2016 by Anna

geometry
The summit of Mount Everest is approximately 29,035 ft above sea level. What is the distance from the summit to the horizon, rounded to the nearest mile? Assume that the distance from the Earth's center to any point on Earth's surface is 4,000 miles. How do I solve this?
Tuesday, June 28, 2016 by Cole

math
Help? The summit of Mount Everest is approximately 29,035 ft above sea level. What is the distance from the summit to the horizon, rounded to the nearest mile? Assume that the distance from the Earth's center to any point on Earth's surface is 4,000 miles.
Tuesday, June 28, 2016 by Cole

Bio
Which of the following best describes the influence of latitude on climate? A. Temperate regions receive more solar energy and heat per unit area than tropical regions. B. Polar regions receive less solar energy and heat per unit area than tropical regions. C. Earth's ...
Monday, June 27, 2016 by Anonymous

science
How much below the surface of the earth does the acceleration due to gravity become 1percent of its value at the earth surface? The earth is assume to be a sphere of radius 6.4×10^6m.
Saturday, June 25, 2016 by Ioba Bolwary Marak

Physics
A satellite orbits at a distance from the Earth's center of abut 3.00 earth radii and takes 7.30 hours to go around once. What distance (in meters) does the satellite travel in one day? And, what is the orbital velocity (in m/s)? I'm completely lost. I haven't ...
Thursday, June 23, 2016 by Leslie

General Physics
Clarification: this is calculus-based physics, so the methodology is not restricted to trigonometry only. I have two questions, so hopefully I can divide them up nice and evenly. Also, if you know where I should copy and paste proper vector notation from, please tell me so I ...
Thursday, June 23, 2016 by Justin

Math
The path of a satellite orbiting the earth causes it to pass directly over two tracking stations A and B, which are 35 mi apart. When the satellite is on one side of the two stations, the angles of elevation at A and B are measured to be 87.0° and 84.2°, respectively...
Wednesday, June 22, 2016 by Jennifer

Earth science
the land will heat up the most because _____ ???
Wednesday, June 22, 2016 by Nikki

Earth science
How do the heating of land and water compare?
Wednesday, June 22, 2016 by Nikki

Physical Science
Many people mistakenly believe that the astronauts who orbit Earth are "above gravity." Earth's mass is 6×1024kg, and its radius is 6.38×106m (6380 km). Use the inverse-square law to find a height above Earth's surface at that the force of gravity...
Tuesday, June 21, 2016 by Hannah

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Homework Help: Science