Earth

  1. Language arts
    God created the heavens and the earth.
  2. Geography
    (Use the drop-down menu to complete the sentence) As one side of Earth turns away from the sun, [Options] A.) The Sun moves with it. B.) The Sun appears to rise on that side of Earth. C.) The Sun appears to set on that side of Earth. D.) The Sun moves to the other side of ...
  3. Social Studies
    Which method of showing Earth's surface is the most accurate? A. An equal-area projection B. A scale-model globe C. A Mercator projection D. A Robinson projection
  4. english
    do not need answers,just some pointers for the reflection response on the speech. How does the exact date (not just general time period) impact an understanding of the speaker’s goal? How might it be different if the speech was given a few years before or a few years after? ...
  5. Physics
    Earth is a spherical body, of radius 6,376 km, which completes a full rotation about its axis in 24.0 h. how long (in hours) should the day on Earth be so that a person at the equator is able to float freely above the ground?
  6. science
    the potential difference between a cloud and the earth is 1000000000. in a lightning bolt 20c of charge pass from the cloud to the earth in a time of 0.004. calculate the current that flows from the cloud to the earth.
  7. Geography
    1.Which of the following describes members of an extended family? A. mother, father, sisters, and brothers B. aunts, uncles, cousins, grandparents C. neighbors and classmates D. parents and grandparents 2.Which of the following types of maps shows correct shapes and directions...
  8. Geography
    1.Winds, air pressure, evaporation, and the angle of the sun shape daily A. Climate B. Temperature C. Weather D. Precipitation 2. The difference between tropical and temperate climates is mainly the result of A. Wind pattern each season B.Precipitation patterns each season C. ...
  9. Geography
    What happens when we move vertically upwards from the Earth ?
  10. Math
    Mass of earth is 5.97 x 10 kg and it's mean radius is 6.371 what's is value of g at earth surface
  11. Physics
    A polar satellite is launched at 850km above earth. Find orbital speed.
  12. Physics
    A polar satellite is launched at 850km above earth.Find its orbital speed.
  13. physics
    2 identical spacecraft leave Earth at the same velocity but in different directions. If the velocity of each spacecraft was 0.84c, what value would an observer on Earth obtain when he calculated their relative velocities?
  14. Math
    A person 6 feet tall walks around the earth. How many feet farther does the top of this person's head travel than the bottom of his feet? Express your answer in terms of Pi.
  15. science
    is the earth flat?
  16. Earth science
    How do I calculate 220grams of c-14 to 55 grams of c-4?
  17. Reading
    Central Park Although the name central park suggests that it has a clear organizing feature, New York’s City’s famous green space has no official center. There is no formal walkway that cuts through the park or monuments that marks its middle. Instead of symmetry, central ...
  18. Reading
    ) Gambling appeals to basic human instincts: the desire for wealth, fascination with random events and beliefs in luck. in moderation , gambling can be simple escapist fun . A lottery , however isa poor way to gamble. the best ,easure for any game of chance is it payout ratio...
  19. Physics
    You have a 120g yoyo that you are swinging at 0.9m/s. How much energy does it have? How high can it get above the lowest point of the swing without your doing any additional work, or Earth? How high could it get on the Moon, where gravity is 1/6 Earth's?
  20. math
    I'm having trouble determining when you divide and when you multiply to solve a scientific notation problem. For example: Assume that there are 20,000 runners in the New York City marathon. Each runner runs a distance of 26 miles. If you add together the total number of miles ...
  21. Physics
    A rotating space station has radius 1310 m, measured from the center of rotation to the outer deck where the crew lives. What should the period of rotation be if the crew is to feel that they weigh one-half their Earth weight?
  22. Physics
    The time period of a satellite in an orbit around the earth is 90 minutes. What is the kinetic energy, potential energy and the total mechanical energy of the satellite?
  23. Chemistry
    On average, Earth's crust contains about 8.1% aluminum by mass. If a standard 12-ounce softdrinks can contains approximately 15g of aluminum, how many cans could be made from one ton of the Earth's crust?
  24. English 10
    Could you please check my answers? I am unsure on two of the questions and I want to get a 100 on this. Pomegranate Seeds At the opening of our story, Mother Ceres is busy tending to the harvest of wheat, corn, rye, and barley; her daughter, Proserpina, begs to go to the ...
  25. English 10 HELP ASAP
    Can you check my work please? 1. Read the passage carefully and use it to answer questions 1-5 Pomegranate Seeds At the opening of our story, Mother Ceres is busy tending to the harvest of wheat, corn, rye, and barley; her daughter, Proserpina, begs to go to the seaside while ...
  26. Physics
    A ship sets sail from Rotterdam, The Netherlands intending to head due north at 5.5 m/s relative to the water. However, the local ocean current is 1.5m/s in the direction north of east and changes the ship's intended motion. a) In what direction would the ship have to travel ...
  27. science
    differences between rotation and revolution of the earth
  28. English
    100% - The Story of a Patriot Upton Sinclair 1 A young man is walking down the street, quite casually, with an empty mind and no set purpose; he comes to a crossing, and for no reason that he could tell he takes the right hand turn instead of the left; and so it happens that ...
  29. physics
    A stone is dropped from a ledge 45m high. What will its speed on reaching the Earth be?
  30. History
    Hello! I was wondering if anyone could check my answers please. From :WorldWarII posters from the national museum of American history. According to the text the World War II poster was ideal agent for what? A. For promoting sales of bonds and stamps in order to increase ...
  31. physics
    A river has a 7.3 m/s current due East. With respect to the water, the boat's velocity is 16 m/s north of east. what is the velocity of the boat relative to the earth?
  32. Physics
    "Provide calculations to show the force and pressure required to lift the weight of each draw bridge (or the load that is on the bridge)" A syringe is used as the hydraulic system which is pushed (via the plunger) to draw up the bascule and pulled back to draw the bascule back...
  33. math
    Carbon 14 (14C) dating assumes that the carbon dioxide on Earth today has the same radioactive content as it did centuries ago. If this is true, the amount of 14C absorbed by a tree that grew several centuries ago should be the same as the amount of 14C absorbed by a tree ...
  34. Geography
    Acknowledgement on the earth
  35. Physics
    The international space center is 1500km above the earths surface. Determine the escape velocity of a rocket launched into space at this altitude if the mass of the earth is 6*10^24kg and the radius is 6.4*10^6m.
  36. science
    how does the natural greenhouse effect supports life on Earth.
  37. Physics
    A polar satellite is launched at 850 km above earth.find its orbital speed
  38. Physics
    The international space center is 1500km above the earth surface. Determine the escape velocity of a rocket launched into space at this altitude if the mass of the earth is 6.0*10^-24kg and the radius is 6.4*10^6 m.
  39. AP English
    Plato, Symposium ’He who has been instructed thus far in the things of love, and who has learned to see the beautiful in due order and succession, when he comes toward the end will suddenly perceive a nature of wondrous beauty (and this, Socrates, is the final cause of all ...
  40. Science
    Please help me with these questions from the Science 6: Forces and Motions Unit Test. My answer-****** 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 ...
  41. Science
    Earth's energy sources include both renewable and nonrenewable resources. Name at least three sources of energy that could be used in your house. Then describe the ideal energy source for generating most of your home's electricity, and explain why you chose that source.
  42. Geography
    What will happen when we move vertically upwards the earth?
  43. Physics
    The moon rotates about its axis every 27.3 days and orbits the earth every 27.3 days. A) what is the moment of inertia with respect to its axis? B) What is the moment of inertia with respect to the earth? C) What is the moons angular momentum with respect to its axis? D) WHat ...
  44. science
    A coastline on Earth experienced a high tide at 6 a.m. At what approximate time will the next low tide occur, and why? 6 p.m., because the coastline will turn 90 degrees from the moon 6 p.m., because the coastline will turn 180 degrees from the moon 12 noon, because the ...
  45. Science
    How do clouds form? (No links, please, just a few facts, I've done half of this question) All weather occurs in Earth's _______. thermosphere troposphere*** stratosphere exosphere Because of their shape when seen from the ground, tornadoes are sometimes called _____. V clouds ...
  46. science
    Mass of a body is 25 kg. What is its weight in Newton on earth? The body is carried to a planet whose mass is two times the mass of earth and radius is half that of earth. What will be the mass and weight of the body on the planet? (Take the value of g on earth as 10 m s–2)
  47. Physics
    A car travels over a hill at a constant speed as shown in the diagram below. The car’s speed is 12.1 m/s, its mass is 1621 kg, the radius of the hill is 29 meters, and the force of friction is 201.6 N. The gravitational field of the earth is 10N/Kg. Calculate the Force ...
  48. english
    What are the rhetorical components of the allegory Animal Farm Answer: The rhetorical components of this allegory consist of ethos, which deals with beliefs, morals, and credibility. Another rhetorical components deals with logos which can be seen in the story using objects. ...
  49. english
    what are the rhetorical components of the allegory in Animal Farm? Answer:a. The rhetorical components of this allegory consist of ethos, which deals with beliefs, morals, and credibility. Another rhetorical components deals with logos which can be seen in the story using ...
  50. earth science
    An element's atomic number is 52. How many electrons would an atom of this element have?
  51. earth science
    If the mass of a material is 76 grams and the volume of the material is 23 cm3, what would the density of the material be?
  52. ELA
    Volcano Forms New Pacific Island Angela Antrim 1NORTHERN PACIFIC OCEAN—Scientists have discovered a new, currently unnamed island in the northern Pacific Ocean. The small island is located in an isolated area between Hawaii and the Marshall Islands. Scientists believe that ...
  53. earth science
    An atom of element A has 75 protons. What would the element's atomic number be?
  54. Physics
    A communications satellite is moving at a constant speed in a circular orbit around Earth. At any given instant in time, what is the resultant force on the satellite? A. zero B. equal to the gravitational force on the satellite C. equal to the vector sum of the gravitational ...
  55. Geography
    Why is the atmosphere very dense near the surface of the earth?
  56. Geography
    What happens when we move vertically upwards from the earth?
  57. Physics
    When the Philae probe landed on Comet 67P, it took approximately 28 minutes for a radio signal to be received at the European Space Operations Centre. Determine the distance (in metres) from the Philae probe to Earth.
  58. sience
    Which of the following can be expected to occur as climate change continues on Earth? HELPPPPPPPPPPP ASAP!!!
  59. math;) Law of Cosines
    Two satellites are in Earth's orbit and are 424 km apart. If an observer is 658 km away from satellite A and 471 km away from satellite B, what angle must the observer turn his telescope to change his view from one satellite to another? a. 40.0 degrees b. 45.5 degrees c. 50.0 ...
  60. science
    what is needed need to test the albedo of ice affect Earth’s climate
  61. Science
    Your Science Club is tutoring some younger students in astronomy. You hear one student describe how people on Earth can never see “the dark side of the Moon.” You know that is an inaccurate statement. What reasons would you give to explain to the student that “far side ...
  62. Physics
    Calculate the time it takes for a gamma ray to travel from the Sun to the Earth Distance (mean) Earth to Sun=1.5 e11 m
  63. science
    Meteorites can make large depressions on Earth’s surface when they make impact. Why are so few of these depressions visible on Earth’s surface? • Earth is constantly changing it’s topography due to volcanic activity, or processes such as weathering, erosion, and ...
  64. Geography
    What happens when we move vertically upwards from the earth?
  65. Science
    Insolation refers to the amount of solar energy that reaches a body, such as a planet. the amount of heat energy contained in a beam of sunlight. the imaginary line that runs around Earth's middle. the spherical shape of Earth I don't know this one. The Coriolis effect refers...
  66. maths
    In 2003, NASA launched the rover Spirit onto the surface of Mars to explore our planetary neighbor. Near the end of January 2010, Mars was 99.33 million km away from Earth. Assume the speed of communication is at the speed of light, which is 300,000,000 m/s. If a researcher on...
  67. Math
    A plane leaves an airport A (38.5N, 37.05W) and flies dues North to a point B on latitude 52N (a) Find the distance covered by the plane (b) The plane then flies due east to a point C, 2400km from B. Determine the position of C Take the value ∏ of as 22/7 and radius of ...
  68. Math
    The position of two towns X and Y are given to the nearest degree as X(45° N, 10° W) and Y (45 N°, 70° W). Find 70-10 =60 Find: (a) The distance between the two towns in (i) Kilometers ( take the radius of the earth as 6370) 60/360 *2*3.142*6370*cos(45) = 4717.47km (ii) ...
  69. math
    . The position of two towns X and Y are given to the nearest degree as X(45° N, 10° W) and Y (45 N°, 70° W). Find 70-10 =60 (a) The distance between the two towns in (i) Kilometers ( take the radius of the earth as 6370) 60/360 *2*3.142*6370*cos(45) = 4717.47km (ii) ...
  70. Math
    The Position of two A and B on the earth’s surface are (36°N, 49°E) and (36°N, 131°W ) respectively. (a) The difference in long between town A and town B (2 marks) (b)) Given that the radius of the earth is 6370, calculate the distance town A and town B. (c) Another town...
  71. Algebra
    In 2003, NASA launched the rover Spirit onto the surface of Mars to explore our planetary neighbor. Near the end of January 2010, Mars was 99.33 million km away from Earth. Assume the speed of communication is at the speed of light, which is 300,000,000 m/s. If a researcher on...
  72. Physics HELP Plz
    On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball. The acceleration due to gravity on the moon is 1/6 of its value on the earth (gravity on moon -1.633m/s2). On earth, golf balls are driven at about 84 m/s with a loft angle of about 15º and have a ...
  73. Science help
    DESCRIBE some uses of satellites orbiting Earth. I need help! Will you help me?
  74. science
    How can volcanic eruptions change the surface of the earth? A. by lowering land levels several feet B. by creating new islands and land C. by creating large deposits of coal D. by decreasing the level of the ocean i think its B
  75. math
    the moon travels about 1.42 * 10^7 meters of its orbit in one twenty-four hour period. which of the following is the most reasonable estimate for the distance the moon travels around the earth in 27 days?
  76. msth
    the mass of earth is 5.97*10^24 kilograms the mass of the moon is 7.34 *^22 kilograms what is the combines mass of earth ad the moon. express your answer in scientific notation
  77. Science
    (just a quick science question, pls correct my answer if im wrong..) Which of the following statements is true A.) there is more water on earth now than there was millions of years ago **** B.) there is less water on earth now than there was millions of years ago C.) there is ...
  78. Physics
    Your friend doesn't believe you when you tell her that the acceleration due to gravity on earth is the same for both light and heavy objects. How could you convince her?
  79. physics
    Calculate the speed of a satellite moving in a stable circular orbit about the Earth at a height of 3.004km.
  80. chemistry
    What type of rock is made from molten material from inside the earth? (2 points) writing part Igneous Metamorphic Sedimentary Magma 7. How can we use rocks to determine how an area used to look in the past? (4 points) wrting part 8. Which of the following can be considered the...
  81. Physics
    Suppose a straight 1.50 mm -diameter copper wire could just "float" horizontally in air because of the force due to the Earth's magnetic field B, which is horizontal, perpendicular to the wire, and of magnitude 3.0×10−5 T . What current would the wire carry?
  82. Social Studies
    Monk's Mound, the largest structure at Cahokia Mounds was built entirely out of A. earth. B. mudbricks.* C. stone blocks. D. adobe.
  83. science
    How does radiation from the Sun affect Earth’s atmosphere?
  84. physics
    n automobile has a vertical radio antenna 1.40 m long. The automobile travels at 30.0 km/h on a horizontal road where Earth's magnetic field is 50.0 µT, directed toward the north and downward at an angle of 65.0° below the horizontal. (a) Specify the direction the automobile...
  85. Earth science
    If a sample contains 50g of carbon 14 and 50g of nitrogen 14 , how many lives has it undergone ?
  86. Earth science
    If a sample contains 50g of carbon 14 and 50g of nitrogen 14 , how many lives has it undergone ?
  87. science
    Multiple Choice 1. Which of Earth's spheres contains mountains, valleys, and other landscapes? (1 point) atmosphere biosphere geosphere hydrosphere 2. Which of the following are examples of destructive forces? (1 point) ice wind both ice and wind neither ice nor wind 3. Earth ...
  88. science
    Which motion causes night and day on Earth? A. the Sun’s motion around its axis B. Earth’s motion around its axis*** C. Earth’s motion around the Sun D. the Moon’s motion around Earth I think the answer is B, but am I correct?
  89. math
    An object weighing 5 pounds on Earth will weigh 2 pounds on Mercury. The Brooklyn Bridge weighs 14,695 tons on Earth. What would it weigh on Mercury (in tons) ?
  90. physics
    What is the gravitational force on a 20Kg satellite circling the earth (Re = 6.4 x 10^6 m, Me = 6 x 10^24Kg) with a period of 5hr?
  91. Physics
    Assuming the earth to be a uniform sphere of radius 6400 km and density 5.5g/c.c. find the value of g on the surface where G=6.67×10
  92. Environmental Science
    Nuclear fission ____ atoms to create energy A. Heats B. Corrodes C. Splits D. Combines A machine that converts electrical energy into mechanical energy is called a _____ A. Generator B. Solar Panel C. Windmill D. Motor Nuclear power plants use the radioactive element _____ to ...
  93. Math :(
    Jupiter is 9.28 x 108 km from Earth when they are farthest apart. Mars is 410,000,000 km from Earth when they are farthest apart. a) How much farther away from Earth is Jupiter? b) When Jupiter is closest to Earth, it is only 629 million km away? What is the difference in ...
  94. ELA (English)
    "Miracles" Why, who makes much of a miracle? As to me I know of nothing else but miracles, Whether I walk the streets of Manhattan, Or dart my sight over the roofs of houses toward the sky, 5 Or wade with naked feet along the beach just in the edge of the water, Or stand under...
  95. Physics
    Obtain the rotational kinetic energy of the earth due its daily rotation on its axis. Assume the Earth to be a uniform sphere; take m = 5:98 x 10^(24) kg; r = 6:37 x10^6 m 1 point 9.8 x 10^(29) 2.56 x 10^(29) 8.85 x 10^(25) 1.00 x 10^(29)
  96. Physics
    Many satellites orbit the earth at about 1000km above the earth's surface. Geosynchronous satellites orbit a distance of 4.22*10^7 m from the center of the earth. How much more energy is required to launch a 500kg satellite into a geosynchronous orbit rather than launching ...
  97. Physics
    The solar radiation incident on the Earth has a power density of approximately 900W/m2. Find the rms value of the electric field. I know that Erms = Emax/squareroot(2) But how can I pass from W/m^2 to electric field?
  98. physics
    The illustration for this problem can be seen at screenshots(dot)firefox(dot)com/atwXACAA​9akaoAji/null The army is testing out a new prototype artillery cannon with an uncommonly high muzzle velocity of 1000 m/sec . The design bugs haven't been fully worked out yet, so ...
  99. Science
    The earth is in constant motion. It rotates and revolves. Which of the following is NOT TRUE of the Earth's motion? 2 points A Due to the revolution of the Earth, we experience seasons. B The Earth rotates on its axis once every 24 hours. This causes day and night. C The ...
  100. physics
    The illustration for this problem can be seen at screenshots(dot)firefox(dot)com/atwXACAA​9akaoAji/null The army is testing out a new prototype artillery cannon with an uncommonly high muzzle velocity of 1000 m/sec . The design bugs haven't been fully worked out yet, so ...
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