Wednesday
December 7, 2016

Homework Help: Science: Earth

Recent Homework Questions About Earth

physics
Calculate the angular momentum of the Earth the arises from its spinning on its axis. Also calculate the angular momentum of the Earth that arises from its orbital motion around the sun. Please help I'm stumped on a take home test.
Sunday, May 8, 2016 by nouh

English
“One day, as I scanned the sandy expanse of Northern Africa, I couldn’t find any of the familiar landmarks—colorful outcroppings of rocks in Chad, irrigated patches of the Sahara. Then I realized they were obscured by a huge dust storm, a cloud of sand that ...
Sunday, May 8, 2016 by quick help please

PHYS 400
The gravitational potential energy of a low-Earth orbit satellite has been estimated at 1.5 million joules. If the satellite has a mass of 417 grams, and g=9.8ms-2, at what altitude (in meters) is the satellite orbiting? Give your answer to the nearest meter.
Sunday, May 8, 2016 by odee

Math
A40m deep wellwith radius 3.5m is dug and the earth taken out is evenly spread to form a plat form ofdimensions 28mby 22m. find the height of the platform.
Saturday, May 7, 2016 by Hiwot

Science one question dont understand plz help ASAP
i know that from earth to the moon is 238,855 miles but i don't know how much that is in months
Wednesday, May 4, 2016 by Thikra

Science
The tracks of the astronauts who landed on the moon are still there in the dust and show no signs of being worn away. This is attruted to the lack of atmosphere on the moon. Which of the following best accounts for the lack of atmosphere. 1)the moon's weak gravity 2)the ...
Wednesday, May 4, 2016 by Zay

mqth and science early childhood
​Children do not need a variety of concrete experiences that enable them to learn the properties of Earth's materials
Wednesday, May 4, 2016 by latavia robinson

math nid this asap tyy
(Velocity and acceleration.) The acceleration of gravity on the surface of the Moon is a = 1.6 m/s2, as opposed to g = 9.8 m/s2 on Earth. An Olympic high-jumper can jump to about 2.35 m on the surface of the Earth. What height could an Olympic high-jumper reach on the surface ...
Wednesday, May 4, 2016 by Than

Biology
What percentage of animals on earth are vertibrates? 5% 25% 50% 95%
Tuesday, May 3, 2016 by Lala

science
Tom is markina locations of active volcanoes on a world map explain how the locations of the volcanoes are related to Earth's plates
Tuesday, May 3, 2016 by kyle

Science
1. Which of the following is the correct definition of minerals? A) A naturally occurring, inorganic solid that has a crystal shape and definite chemical composition. B) A naturally occurring, inorganic solid that forms through crystallization of melted materials. C) A ...
Monday, May 2, 2016 by Tim

Earth science
What is an example of a stable system? How were you able to determine whether or not this system is stable? Please don't attach files, my parents do not allow me to click on any attached files!
Monday, May 2, 2016 by Please help!!!!!!!

Math
24. A radio signal travels at 3.00 x 10^8 meters per second. How many seconds will 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 3.54 x 10^7 meters?
Sunday, May 1, 2016 by Leet Speaker

LA
2. Read the passage. What technique is the author using to develop point of view? "Though zoos are meant to be a joy to viewers and teach lessons about our earth, the zoo jails its inhabitants and passes on faulty knowledge." a. state a claim b. persuasive language c...
Sunday, May 1, 2016 by Fred

Language Arts, can anyone check?
1. Which statement is shared by both "Zoos: Joys or Jails?" and "Why Do We Need Zoos?" a. clearly stated claim b. humorous introduction c. unsupported facts d. one-sided argument 23 Read the passage. What technique is the author using to develop point of ...
Sunday, May 1, 2016 by Fred

Chemistry
1. Before the Industrial Revolution, the concentration of CO2 in Earth’s atmosphere was about 275 ppm. Considering the effect of CO2 only, calculate the effect that the increase in CO2 has had on the pH of precipitation
Saturday, April 30, 2016 by Jana

Science Check answers
2) What phenomenon naturally warms Earth's lower atmosphere and surface? • the formation of sunspots • changes in the shape of Earth's orbit • global warming (MY ANSWER) • the greenhouse effect 3) Which of the following is an example of human impact...
Friday, April 29, 2016 by Jessica

LA, Check!
Read the statements Which group is contrasting in point of view? A. "Some people feel that there is lots of wild space that animals should only live there. Other people feel that there is very little wild space left." B. "Humans are destroying the Earth's ...
Thursday, April 28, 2016 by Lauren

lang art
1. Read the sentence from "Zoos: Joys or Jails?" What clue word is used to show contrast between the two points of view? "Although the circumstances and reasons for animals being in zoos vary, its concept has faults many don't notice during their visit with ...
Thursday, April 28, 2016 by heeeeelpppp

Re-post - Science - from Spitfireredhead
Posted by SpitFireRedHead on Wednesday, April 27, 2016 at 8:23am. Please check this. Thanks! 1. Which of the following shows fossils as evidence of continental drift? a. Limestone layers in the Appalachian Mountains of North America were exactly the same as the limestone in ...
Wednesday, April 27, 2016 by Writeacher

Science
Which of the following statements is true about Earth's magnetic poles? A.They are located at earths geographic poles B.They are the areas where Earths magnetic field is weakest. C. They are the areas where Earths magneic field is strongest. D. Earth has one dominant ...
Wednesday, April 27, 2016 by Sara

Science (please check Ms. Sue)
Please check this. Thanks! 1. Which of the following shows fossils as evidence of continental drift? a. Limestone layers in the Appalachian Mountains of North America were exactly the same as the limestone in Scotland’s highlands. b. Mesosaursus, an ancient reptile, had ...
Wednesday, April 27, 2016 by SpitFireRedHead

Science
A man has a mass of 70 kg on earth .Calculate its mass and weight on moon
Monday, April 25, 2016 by Avdesh

History
“Without consideration of ‘traditions’ and prejudices, it [Germany] must find the courage to gather our people and their strength for an advance along the road that will lead this people from its present restricted living space to new land and soil, and hence ...
Friday, April 22, 2016 by Sarah

LA
Read the passage. What technique is the author using to develop point of view? Though zoos are meant to be a joy to viewers and teach lessons about our earth, the zoo jails its inhabitants and passes on faulty knowledge A) State a claim B) Persuasive Language C) Supporting ...
Friday, April 22, 2016 by Maggie

Physics
Calculate the distance, in m, of the centre of mass of the Earth-Moon system from the centre of the Earth. Note: the mass of the Moon is 7.35x10 22kg, the mass of the Earth is 5.98x10 24kg, and their separation is 3.85x10 8m.
Friday, April 22, 2016 by Amber

Language Arts (Check Answers)
"President Lincoln's Declaration of Emancipation, January 1, 1863 by Frances E. W. Harper It shall flash through coming ages, It shall light the distant years; And eyes now dim with sorrow Shall be brighter through their tears It shall flush the mountain ranges, And ...
Friday, April 22, 2016 by Tim

Language Arts
"President Lincoln's Declaration of Emancipation, January 1, 1863 by Frances E. W. Harper It shall flash through coming ages, It shall light the distant years; And eyes now dim with sorrow Shall be brighter through their tears It shall flush the mountain ranges, And ...
Thursday, April 21, 2016 by Tim

Math
The distance around the Earth at the equator is about 40074 kilometers find the equatorial diameter of Earth to the nearest kilometer A.12,762 Km B.25,512 Km C.62,884 km D 6,339,700 Km
Tuesday, April 19, 2016 by Applesuace Master

science
1. Under which of the following conditions would a fossil most likely form? A. A living thing dies and sediment is very slowly deposited on top of its body. B. A living thing dies and sediment quickly covers its body. C. A living thing dies and its skeleton is left exposed to ...
Tuesday, April 19, 2016 by Help please

science
what can you infer from the fact of all life on earth is related f you go back far enough?
Monday, April 18, 2016 by hey

Physics
Calculate the acceleration of a car that is travelling at a constant speed of 100 km per hour on a straight road. The radius R of the Earth is 6370 km. Why do we not feel this acceleration?
Monday, April 18, 2016 by Hammad

Science
Why the earth rotate each 24 hours?
Sunday, April 17, 2016 by The earth

science help pls pls
Derek designed an experiment to demonstrate interactions between Earth systems. He cleared a patch of land in his backyard and poured a glass of water from a height of 12 inches above the ground. A depression was formed on the land at the spot where the water hit the ground. ...
Friday, April 15, 2016 by Oscar

i really need help with science pls help
The Hawaiian Islands are examples of islands that formed over a hotspot. Based on this information, which of the following processes formed the Hawaiian Islands? Melted rock called magma rose through holes in Earth's crust and gradually solidified as it cooled. Tectonic ...
Friday, April 15, 2016 by Oscar

Physics
A geostationary satellite orbits the Earth in such a manner that it is always directly above the same point on the equator as the Earth rotates. Assuming that this orbit is circular, what is its radius? (The mass of the Earth is approximately 5.97 × 1024 kg and the ...
Friday, April 15, 2016 by Joe

Geometry
Average diameter of about 7900 miles. Jupiter has an average diameter of 86900 miles. The volume is Jupiter is approximately how many times larger than the earth?
Wednesday, April 13, 2016 by Mia

Science
If the Earth was tilted so that the Arctic and the Antarctic were in the equator's location, how would it affect the climate?
Wednesday, April 13, 2016 by Keon

science help pls pls
A star is observed from two positions of Earth in its orbit, in summer and winter. Which of these is the best method to calculate the approximate distance of the star from Earth? measure the parallax and use it in calculations measure the red shift of emitted light and use it ...
Wednesday, April 13, 2016 by Oscar

Geometry Honors
On the bridge of a ship at sea, the captain asked the new, young officer standing next to him to determine the distance to the horizon. The officer took pencil and paper, and in a few moments came up with an answer. On the paper he had written the formula d = 3.6 square root h...
Wednesday, April 13, 2016 by Ryan

science
Explain what would happen if your epiglottis stopped working properly. A. you would have to go to dialysis to get your blood filtered everyday B. you would have to use an inhaler when the pollen or dust repeatedly bothered you C. you would choke on food when it went down the ...
Wednesday, April 13, 2016 by josiah

physics
Suppose that 7.40 g of hydrogen is separated into electrons and protons. Suppose also that the protons are placed at the Earth's north pole and the electrons are placed at the south pole. What is the resulting compressional force on the Earth?
Tuesday, April 12, 2016 by lila

Mathematics
1. Which of the following is the correct definition of minerals? (1 point) a naturally occurring, inorganic solid that has a crystal shape and a definite chemical composition a naturally occurring, inorganic solid that forms through crystallization of melted materials•&#...
Tuesday, April 12, 2016 by Queen/Halle

HEALTH PLZ HELP MEEEEEEEEEEEE ASAPPPPPPPP
Explain what would happen if your epiglottis stopped working properly. A. you would have to go to dialysis to get your blood filtered everyday B. you would have to use an inhaler when the pollen or dust repeatedly bothered you C. you would choke on food when it went down the ...
Tuesday, April 12, 2016 by Sparkles_01

Health Plz help THX!!
Explain what would happen if your epiglottis stopped working properly. A. you would have to go to dialysis to get your blood filtered everyday B. you would have to use an inhaler when the pollen or dust repeatedly bothered you C. you would choke on food when it went down the ...
Tuesday, April 12, 2016 by Sparkles_01

PHYSICS HELP!!
(a) Suppose 10 astronauts are sent to Mars and then back to Earth. The average power usage of each astronaut is 10,000,000 joules per day. What is the average power usage of each astronaut in watts and horsepower? (b) It will take approximately 2 years for the astronauts to ...
Monday, April 11, 2016 by Ben

Math HELP PLEASE QUICK!
A radio signal travels at 3 x 10^8 meters per second. How many seconds will 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 3.54 x 10^7?
Monday, April 11, 2016 by Sydney

PHYSICS!!
(a) Suppose 10 astronauts are sent to Mars and then back to Earth. The average power usage of each astronaut is 10,000,000 joules per day. What is the average power usage of each astronaut in watts and horsepower? (b) It will take approximately 2 years for the astronauts to ...
Monday, April 11, 2016 by tom

Energy of satellite PHYSICS
An m = 43 kg mass instrument package is put into orbit at an altitude above the Earth of A = 23000 km. What is the kinetic energy of this satellite in Joules?
Sunday, April 10, 2016 by Stephanie

Science
Two pellets, each with a charge of 1.5 microcoulomb (1.5×10−6 C ), are located 2.8 cm (2.8×10−2 m ) apart. Part A Find the electric force between them.Part B What would be the mass of an object that would experience this same force in Earth's ...
Saturday, April 9, 2016 by Rachel

Physics
1 m pendlum on Earth has a period of 2 s. What would it's period be on the moon where the acceleration due to gravity is 1.63 m/s2 ?
Friday, April 8, 2016 by Aminah

science
according to wegeners hypothesis of continental drift ? A. Earths surface B. The continents C. Earth is slowly cooling and shrinking D. The continents joined
Thursday, April 7, 2016 by Xxoreo_~chan_xX

Science
Which of the following can be expected to occur as climate change continues on Earth? A. Decreased melting of sea ice B. Decreased migration of pests and pathogens*** C. Increased freshwater sources D. Increased coastal flooding
Thursday, April 7, 2016 by Dylan

physics
A certain pendulum on Earth has a period of 1.6 s. What would be the period of this pendulum if it were taken to another planet that had 1.75 times the mass of the Earth and 2.5 times the Earth's radius? Express your answer in seconds to three significant digits.
Thursday, April 7, 2016 by Zac

english
4. Shenzhen is a shoking place, like nowhere elseon earth that i have ever seen. (make a question with sentence " i have ever seen") 5. The new Hopewell Highway runs from Shenzhen to Guangzhou. (make a question with " where question") 6. So the traffic will...
Wednesday, April 6, 2016 by anonim

english
Please make a question 1. In 1982 it was a fishing village with two main roads, fields, and a population of 3 million. It is growing at an incredible speed (make a question with sentence "it is growing at an incredible speed ") 2. China is changing. It is no longer a...
Wednesday, April 6, 2016 by ina

Science
Why do scientists study images made with parts of the electromagnetic spectrum other than visible light? A)These images are the only way to observe galaxies beyond our own. B)These images reveal information that visible light does not show. C)These images show important data ...
Monday, April 4, 2016 by Cam

Science
Karen is studying types of spacecraft. Which of these spacecraft can people use to travel to and from orbits close to Earth? A)space probe B)space shuttle C)space station D)space telescope I think the answer is C.
Monday, April 4, 2016 by Grady

maths help!
find the mass of the earth assuming the radius is 6400km
Sunday, April 3, 2016 by newton

Comm Tech
1.)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) A.)Green & Brown B.)Red & Yellow C.)Red & Blue D.)Pink & Yellow
Thursday, March 31, 2016 by #FreeGucci

Physics
A pulsar is a rapidly rotating neutron star that continuously emits a beam of radio waves in a searchlight manner. Each time the pulsar makes one revolution, the rotating beam sweeps across the earth, and the earth receives a pulse of radio waves. For one particular pulsar, ...
Tuesday, March 29, 2016 by Emily

science
space craft is heading towards the sun which is located 150,000,000 km. away from earth at a speed of 17,000 km, per hour. what is the approximately to the nearest year how long will it take to arrive at the sun's surface? show work
Tuesday, March 29, 2016 by Anonymous

Astronomy
You see a galaxy which lies at distance D from the earth. You measure a flux from this galaxy of f. If you assume a mass-to-light ratio of r (i.e. r is the number of kilograms needed to generate one watt of radiation), derive an equation for the stellar mass m of the galaxy.
Monday, March 28, 2016 by Anonymous

College Physics
If a certain amount of ideal gas occupies a volume 9.5 m3 with a pressure of 3.1 atm and temperature 5.4 oC on earth, what would be its volume on another planet, where the temperature is 5.3oC and the pressure is 7.4 atm ? The answer is in unit of m3
Saturday, March 26, 2016 by Desperate Student

physics
A satellite of mass 2500kg is orbiting the Earth in an elliptical orbit.At the farthest point from the Earth,its altitude is 3600km,while at the nearest point,it is 1100km.calculate the energy and angular momentm of the satellite and its speed at the aphelion and perihelion.
Friday, March 25, 2016 by Anonymous

physics
A satellite of mass 2500kg is orbiting the Earth in an elliptical orbit.At the farthest point from the Earth,its altitude is 3600km,while at the nearest point,it is 1100km.calculate the energy and angular momentm of the satellite and its speed at the aphelion and perihelion.
Friday, March 25, 2016 by pawan kumar

science
Explain why earth and other planets were not solid when they formed during the beginning of the Precambrian, approximately 4,600 million years ago (MYA). What was this particular time period called, and why is this period not considered a part of Earth's geological history?
Thursday, March 24, 2016 by FluttershyK22

physics
A pendulum has a period of 0.90 s on Earth. What is its period on a planet where the acceleration of gravity is about 0.29 that on Earth?
Thursday, March 24, 2016 by ce

science
a person roller skates down a street heading east which of the following would be true abot friction in this scenario? ----------------------------------- 1.A. friction does not affect the skates in this scenario 2.B. friction pulls the skates wheels eastward 3.C. friction ...
Wednesday, March 23, 2016 by darkwolfy

physics
A horizontal, straight wire carrying 12 A current from east to west is in the earth's magnetic field B. At this place, B is parallel to the surface of the earth, points north and its magnitude is 0.04mT. Determine the Magnetic Force on 1 m length of wire. If mass of this ...
Wednesday, March 23, 2016 by sanjay

science help
Two factors which cause global climate change are listed below. Factor 1: Volcanic eruptions. Factor 2: Changes in the amount of Sun’s heat received by the Earth’s atmosphere and surface. Which of these statements is correct about the two factors which cause global ...
Tuesday, March 22, 2016 by Oscar

science help please
1. Which of the following best describes the movement of an object at rest if no outside forces act on it? (1 point) It will move due to inertia. Gravity will eventually cause it to move. It will stay at rest due to inertia. It will stay at rest due to gravity. 2. A 2,500 kg ...
Monday, March 21, 2016 by PlsHelp

English Q's 1-5
Read the following passage. Then answer questions 1-5 on the online portion of the Unit Assessment. From The Lost Prince By Frances Hodgson Burnett There are many dreary and dingy rows of ugly houses in certain parts of London, but there certainly could not be any row more ...
Monday, March 21, 2016 by Sarah Lott

astronomy
On Earth, an astronaut weighs about 600 Newtons. The mass of the Earth is about 6 x 1024 kg, and the radius of the Earth is about 6.4 x 106 m. Suppose the astronaut climbs a ladder to a height of one Earth radius above the Earth. What is the new weight of the astronaut? please...
Monday, March 21, 2016 by bob

reading
(1) Scientists generally agree that Earth is getting warmer due to what's called the greenhouse effect. (2) A greenhouse stays warm because sunlight and heat coming through the glass roof are mostly trapped. (3) The heat doesn't radiate back into the atmosphere because...
Sunday, March 20, 2016 by Anonymous

Science
Please Check! 1. How does nanotechnology help engineers make products for the future? a. By changing a materials atomic structure, it can be made from elements that are easier to obtain.*** b. By changing a material's atomic structure, its physical properties can also be ...
Friday, March 18, 2016 by SpitFireRedHead

Science Please Check
Please Check 1. How does nanotechnology help engineers make products for the future? a. By changing a materials atomic structure, it can be made from elements that are easier to obtain.*** b. By changing a material's atomic structure, its physical properties can also be ...
Friday, March 18, 2016 by Blair

physics
At what altitude above Earth's surface would the gravitational acceleration be 1.20 m/s2? (Take the Earth's radius as 6370 km.)
Thursday, March 17, 2016 by krals

Science
How does sea-floor spreading occur? A, New materials are being added to the asthenosphere. B, Earthquakes break apart the ocean floor. C, Sediments accumulate at the area of spreading. D, Molten material beneath Earth's crust rises to the surface. •• 2, Which ...
Thursday, March 17, 2016 by Tanner fox

Science
ing to Wegener's hypothesis of continental drift,? A.Earth's surface is made up of seven major landmasses. B.the continents do not move. C.Earth is slowly cooling and shrinking. D.the continents were once joined together in a single landmass.•• Correct me plz
Thursday, March 17, 2016 by Tanner fox

Earth Science (check answers)
Describe the importance of maintaining the ocean ecosystem. It is important to maintain because the ocean ecosystems because it provides reefs that support a complex ecosystem of ocean organisms that live and help each other to survive. Virtually every phyla on Earth is ...
Thursday, March 17, 2016 by Sue

Physics - Repost because of no response
In an experiment on the shuttle, an electron with a speed of 6.3 x 105 m/s [N] and a mass of 9.11 x 10-31 kg is shot through an external magnetic field. Determine the strength and orientation of the magnetic field required so that the electron's direction of travel remains...
Wednesday, March 16, 2016 by Matt Damon

Reading
Of all the gods and goddesses of Olympus, perhaps none was loved by humans as much as Demeter. Demeter was the goddess of the soil and of the crops, to which she tended with great care all through the year. Demeter enjoyed her duties because she cared for mortals and wanted to...
Wednesday, March 16, 2016 by Helen

Reading
Of all the gods and goddesses of Olympus, perhaps none was loved by humans as much as Demeter. Demeter was the goddess of the soil and of the crops, to which she tended with great care all through the year. Demeter enjoyed her duties because she cared for mortals and wanted to...
Wednesday, March 16, 2016 by Helen

Reading
Of all the gods and goddesses of Olympus, perhaps none was loved by humans as much as Demeter. Demeter was the goddess of the soil and of the crops, to which she tended with great care all through the year. Demeter enjoyed her duties because she cared for mortals and wanted to...
Wednesday, March 16, 2016 by Helen

Physics - Repost because of no response
In an experiment on the shuttle, an electron with a speed of 6.3 x 105 m/s [N] and a mass of 9.11 x 10-31 kg is shot through an external magnetic field. Determine the strength and orientation of the magnetic field required so that the electron's direction of travel remains...
Wednesday, March 16, 2016 by Matt Damon

Reading
Of all the gods and goddesses of Olympus, perhaps none was loved by humans as much as Demeter. Demeter was the goddess of the soil and of the crops, to which she tended with great care all through the year. Demeter enjoyed her duties because she cared for mortals and wanted to...
Wednesday, March 16, 2016 by Helen

Science
1. Which of the following best describes the movement of an object at rest if no outside forces act on it? (1 point) It will move due to inertia. Gravity will eventually cause it to move. It will stay at rest due to inertia. It will stay at rest due to gravity. Physics 2. A 2,...
Wednesday, March 16, 2016 by Tanner fox

Reading
Of all the gods and goddesses of Olympus, perhaps none was loved by humans as much as Demeter. Demeter was the goddess of the soil and of the crops, to which she tended with great care all through the year. Demeter enjoyed her duties because she cared for mortals and wanted to...
Wednesday, March 16, 2016 by Helen

Physics Magnetic Field
In an experiment on the shuttle, an electron with a speed of 6.3 x 105 m/s [N] and a mass of 9.11 x 10-31 kg is shot through an external magnetic field. Determine the strength and orientation of the magnetic field required so that the electron's direction of travel remains...
Wednesday, March 16, 2016 by Matt Damon

math
a well of diameter 3 m is dug 14 m deep . the earth taken out of it has beem spread evenly all around of it in the shape of circular ring of width 4 m to form embankment. find the height of embankment .
Wednesday, March 16, 2016 by Avi

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, March 16, 2016 by jai

Physics
What is the potential energy of the Earth, considered as an object orbiting the Sun? Compare your result with the kinetic energy of the Earth in its orbit. Given Earth mass = 6.34×1024kg , Sun mass =1.934×1030kg, and distance from the Earth to the Sun =1.434×...
Tuesday, March 15, 2016 by Supansa

Science
1. Which of the following about the suns structure is true? A.The sun has a solid surface. B. The sun has an interior and an atmosphere. * C.The sun's is similar to Earth's; it has a core, mantle, and crust. D. The sun's outermost layer is called the radiation zone.
Tuesday, March 15, 2016 by TeamWork

Earth science
Where on the ocean floor will you find the greatest amount of living organisms? Answer: the coral reefs
Tuesday, March 15, 2016 by Sue

science
How are Earth and Venus similar ? How are they different? give 2 similarities and 2 difference thanks
Tuesday, March 15, 2016 by UNKNOWN

Physics
Kim(55 kg) has been wondering about the normal force. (a) How many helium balloons would it take to reduce her normal force by 50% if helium has a lifting force of 1.0 gram per liter. She estimates that a balloon contains about 5.0 liters of helium. (b) How many helium ...
Tuesday, March 15, 2016 by Next

Physics
What is the potential energy of the Earth, considered as an object orbiting the Sun? Compare your result with the kinetic energy of the Earth in its orbit. Given Earth mass = 6.34×1024kg , Sun mass =1.934×1030kg, and distance from the Earth to the Sun =1.434×...
Tuesday, March 15, 2016 by Supansa

Math (geometry)
Earth's diameter at the equator is about 7926 miles. A jet flies 550 miles per hour. How long would it take the jet to fly halfway around the equator?
Monday, March 14, 2016 by Skylar(7th grade)

AP Physics
At their closest approach, Venus and Earth are 4.2x10^10m apart. The mass of Venus is 4.87x10^24kg, the mass of Earth is 5.97x10^24kg, and G=6.67x10^-11Nm2/kg2. What is the force exerted by Venus on Earth at that point?
Monday, March 14, 2016 by Anonymous

  1. Pages:
  2. <<Prev
  3. 1
  4. 2
  5. 3
  6. 4
  7. 5
  8. 6
  9. 7
  10. 8
  11. 9
  12. 10
  13. 11
  14. 12
  15. 13
  16. 14
  17. 15
  18. Next>>

Homework Help: Science