1. physics

    Suppose partial melting of the polar ice caps increases the moment of inertia of the Earth from 0.331MR^2 to 0.332MR^2. What is the change in length of day in seconds?
  2. Physics

    An astronaut takes a space trip to newly discovered palnet X. measurements from earth indicate that: Mx=3Me and Rx=2Re. What is the acceleration of gracity gx on this planet as a multiple of ge?
  3. social studies

    TRUE OR FALSE:are river valleys, basins, and coastal plains of east asia among the most sparsely populated places on earth?
  4. physics

    in what specific way does light from distant stars and galaxies tell astronomers that atoms throughout the universe have the same properties as those on earth?
  5. Earth Science

    In what ways can sea level be lowered? What effect might this have on existing life forms? I can't find it in my textbook. Can somebody helps??????? THANKS A LOT!!!!!
  6. Earth/Space Science

    What effect, if any, would you expect a massive forest fire to have on the amount of carbon dioxide in the atmosphere? Explain your answer, please?
  7. Science

    19. Which of the following base unit definitions was changed from being based on an arc of the earth to a time interval of light? second kilogram meter candela
  8. science

    How long would it take a radio wave with a frequency of 5.1 × 105 Hz to travel from Mars to Earth if the distance between the two planets is approximately 8.00 × 107 km?
  9. physics

    The average distance separating Earth and the Moon is 384,000 km. A 2.6x104 kg spaceship located halfway between them. (b) What is the total potential energy of the ship?
  10. science helppp.

    4. Small pieces of rock that enter Earth's atmosphere at speeds of 15 to 70 km/s and burn up are called ____. (1 point) stars meteors meteorites asteroids
  11. Earth and Space Science

    Put the following astronomical bodies in order from largest to smallest: a. Universe b. Galaxy c. Moon d. Planet e. Solar System f. Comet
  12. Earth Science

    do you think that the earthquake that affected japan should have a impact on the nuclear issues for the united states ? DONT UNDERSTAND THIS QUESTION AT ALL !
  13. Science

    What are reasons you should pick up trash of the ground if the someone leaves it. I have 2, 1. less pollution and 2. keeps earth healthy and clean. I need 2 more
  14. Technology & Society

    According to the text, by 2050, it is believed that __________ of the earth's species will become extinct if rain forest destruction continues. A. 6% B. 14% C. 25% D. 50% I think it's C., but not sure
  15. Science

    True/false Earth's atmosphere oceans and continents began to form during the first several hundred million years of the Precambrian time.
  16. Earth Science

    What two types of air masses collide to form a dry line? On which side of this boundary would you expect to see rising motion, and why?
  17. Science

    one year ago How many Global Positioning System (GPS) satellites are required to pinpoint your location on Earth’s surface? (1 point) 24 12 3 5 i think it's 4, but 4 is not an option
  18. English

    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*****
  19. grade 9

    A 40m deep well with radius 3.5m is dug & the earth taken out is evenly spead to from a platform of dimension 28m by 22m.find the heght of the platfoem?
  20. Algebra

    Hint: Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people know that the weight of an object varies on different planets, but did you know that ...
  21. physics

    As a moon follows its orbit around a planet, the maximum gravitational force exerted on the moon by the planet exceeds the minimum gravitational force by 9.8%. Find the ratio rmax/rmin, where rmax is the moon's maximum distance from the center of the planet and rmin is the ...
  22. physics

    As a moon follows its orbit around a planet, the maximum gravitational force exerted on the moon by the planet exceeds the minimum gravitational force by 9.8%. Find the ratio rmax/rmin, where rmax is the moon's maximum distance from the center of the planet and rmin is the ...
  23. Physics

    As a moon follows its orbit around a planet, the maximum gravitational force exerted on the moon by the planet exceeds the minimum gravitational force by 47.9%. Find the ratio rmax/rmin, where rmax is the moon's maximum distance from the center of the planet and rmin is the ...
  24. Physics

    As a moon follows its orbit around a planet, the maximum gravitational force exerted on the moon by the planet exceeds the minimum gravitational force by 28.2 %. Find the ratio rmax/rmin, where rmax is the moon's maximum distance from the center of the planet and rmin is the ...
  25. English

    8. which of the following quotes from "the morning of june 281948" best describe the aversion that the public felt toward Shirley Jackson's short story "The lottery" a. "as a matter of fat when I read it over later I decided that except for one or two minor corrections, it ...
  26. Science

    Which of the following is true about diabetes? A. The pancreas overproduced glucose, and so insulin must be injected to reduce glucose levels. B. The pancreas underproduced glucose, and so insulin must be injected to increase glucose levels C. The pancreas overproduced insulin...
  27. Silent Night in Cheyenne

    For anyone interested in Native American, here is what is sung to the tune of Silent Night. Pavetaa'eva nehe'xoveva Tsexho'ehnese ho'eva, Jesus Vo'estanevestomanehe. Ehvo'estanetsehestaotsehoo'o Tsexho'eotsestomotahaetse Vo'estanevehahtsestotse. Ahaa esheeva nehe'xoveva Tsexho...
  28. Physics

    If a 1.75 m tall man is looking at a plane mirror from an eye which is 15 cm from the top of their head, what is the minimum length that the mirror must be so that he can just barely see his whole body in the mirror? How far up from the ground must the mirror be placed? 1/(...
  29. physics

    As Newton showed, gravity is a force that acts along the line separating two bodies and causes the two bodies to be attracted to each other (i.e. it is a central force). In this problem, assume that the planetary orbits about the Sun are circular. a. Does the force of gravity ...
  30. Earth Science

    What commonly used metal is extracted from hematite? There are a number or iron ores. Hematite is one of them.
  31. Physics

    The moon orbits 3.84 x 10^8m form the center of the earth. How fast does the moon travel in meters per second?
  32. science

    how is heliocentric(planets and Earth revolve around the sun) connected to science? math? the world? you? and y is it important?
  33. Chemistry

    The circumference of the earth is 25,000 mi at the equator. What is the circumference in kilometers? in meter? -- I really don't understand how to concer this. Please help!
  34. earth

    What are the distinguishing characteristics between the two catagories of igneous rocks? I know two are texture and color. But are there any more?
  35. Earth Science

    Around what tectonic plate are most of the worlds volcanoes located. The Pacific plate. Is this correct?
  36. greek bases

    the greek base in the word chronology means: a.life b.pain c.time d.earth i choose c?
  37. Earth science

    what is the material between 2900 kilometers and 5200 kilometers below earths surface inferred to be
  38. geometry

    radius of 3960 miles cause there 5280 feet find length in feet by circumference of earth use ~3.14
  39. Science

    Explain- how would the gravitational force between Earth and the Moon change if the distance between them increased?
  40. algebra

    earth tothe sun is 93000000 how many of you stacked on top of yourself would it take to reach the sun
  41. physics

    how much work is required to lift a 10 newton weight from 4.0 meters to 40.0 meters above the surface of earth
  42. physics

    A 3.3 kg brick is falling at a rate of 35.1 m/s toward the earth at a current height of 14 m. What is the total mechanical energy of the brick?
  43. Physics (please help!!!!)

    Derive the rocket equation M(dV/dt) = -u(dM/dt)for a rocket in the (constant) gravitational field near the surface of the Earth.
  44. science

    your mass is 90 kilograms. you are on the earth where the acceleration of gravity is measured at 9.8 meters/sec sec. What is your weight in Newton?
  45. science

    Sam weighs 720 N on earth and 120 N on the moon. What does this tell you about the value of gravity on the moon?
  46. astronomy/physics

    Use Newton’s Law of Gravity to calculate the force of gravity between a 39 kg person and Earth.
  47. earth

    Determine the gravitational force that you exert on another person 1.90 m away. Assume that you and the other person are point masses of 75.0 kg each.
  48. Physics

    An object has a mass of 115 kg on the Earth. What is the weight of the object on the surface of a planet where the acceleration due to gravity is 5.6 m/s2?
  49. physics

    how do scientist know that the chemical elements here on earth are the same as on the planets in space and not some different elements
  50. Physics

    What is the frequency of the electromagnetic radiation from outer space that reaches the earth with a wavelength of 1 x 105 m, and a velocity of 1 x 105 m/s?
  51. phscal sicence

    If an astronaut in full gear has a weight of 1150 N on Earth, how much will the astronaut weigh on the Moon?
  52. Enviro Science

    Describe the diversity of species on Earth, relating the difference between known numbers and estimated numbers Thanks -MC
  53. Marine Biology

    Surface currents are created by wind and the Earth's rotation. What creates deep water currents?
  54. dynamics of rigid bodies

    prove that the weight of an object on the moon is approximately one-sixth of its weight on earth
  55. 6th Grade Science - Help

    Which of Earth's spheres has the most mass? 1. atmosphere 2. hydrosphere 3. geosphere 4. biosphere Is it Biosphere?
  56. Math

    On what day in the year 1943 was the earth 300 000 minutes old? (give the month and day)
  57. 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
  58. physics

    If I weigh 741 N on Earth at a place where g = 9.80 m/s2 and 5320 N on the surface of another planet, what is the acceleration due to gravity (in m/s2) on that planet?
  59. Science

    How is the temperature of the Earth affected by factors controlling the balance between incoming radiation and radiation emitted...?
  60. Math Algebra

    Question:: You are about to take a test that contains questions of type A worth 4 point and of type B worth 7 points. You must andwer at least 5 of type A and 3 of type B, but time restricts answering more than 10 of either type. Intotal, you can answer no more than 18. How ...
  61. Physics please help

    He drops a ninja ball device from a height of 10.0m. The mass of the enter device is 190g and the mass of the top (smallest) ball is 2.90g A) calculate the momentum of the device as it hits the ground (ignore air resistance) I know that this answer is 2.66 for sure B) if the ...
  62. physics 2

    A system consists of 4.8 mol of an ideal monatomic gas at 375 K. (a) How much heat must be added to the system to double its internal energy at constant pressure? ? kJ (b) How much heat must be added to the system to double its internal energy at constant volume? ? kJ
  63. physics

    In order to qualify for the finals in a racing event, a race car must achieve an average speed of 276km/h on a track with a total length of 1520m. If a particular car covers the first half of the track at an average speed of 246km/h, what minimum average speed must it have in ...
  64. Physics

    In order to qualify for the finals in a racing event, a race car must achieve an average speed of 230 km/h on a track with a total length of 1810 m. If a particular car covers the first half of the track at an average speed of 245 km/h, what minimum average speed must it have ...
  65. Chemistry

    A student tested the effect of temperature on the decomposition of N2O5. He found that the rate of the reaction at a lower temperature was 4.2 x 10–3 s–1 and the rate at a higher temperature was 1.6 x 101 s–1. What is wrong with the student's data? A. Nothing. Rate ...
  66. History

    Speaker A: "It is proper for the United States to seize the Philippines before some other country does. We can use both natural resources and the port." Speaker B: "We have saved the Cubans from Spain. It would be dangerous to give them too much freedom; for their own good we ...
  67. CHEM

    in addition to previous Q: for eg: why is the oxidation state (#) of Ca in CaH2 "+2"? According to a p.table I have here +2 is the only oxidation # for Ca...but how is that figured? One other eg: the oxidation state (#) of the maganese atom in KMnO4.6H2O is "+7". How is this ...
  68. Chemistry

    Can someone help me balance this equation? MnO4(¨C) + H(+) + C2O4(2¨C)--> Mn(2+) + H2O + CO2 Sure but tell us what you don't understand about it. You need to learn how to do them yourself. Tell me what you don't understand, in detail, and I can help you through it. Well I...
  69. physics

    A ship sets out to sail to a point 174 km due north. An unexpected storm blows the ship to a point 132 km due east of its starting point. How far must it now sail to reach its original destination? In what direction must it now sail to reach its original destination?
  70. physics

    An engineer uses a bolt to connect a joint. The force provided by the bolt F is a function of the external load P that it must bear. The bolt applies a force of 200 lb against an external load of 100 lb. The same bolt must apply a force of 400 lb against an external load of ...
  71. ENGLISH Types of business writing

    Assume that you’ve worked for the last five years as an administrative assistant for the Human Resources Department of Broadworth General Hospital. The Director of Human Resources, Miriam Hopkins, has charged you with organizing a two-hour training seminar to be attended by ...
  72. Math

    In the center of the library is a fountain that holds 500 gallons of water. For every 25 gallons of water they must add 1/4 cup of water treatment. How many cups of water treatment must they add to the fountain to treat the 500 gallons of water?
  73. Technology

    According to Alan Durning, the basic value of a sustainable society is: A. that any society's consumption levels must be tied to locally available resources. B. each generation should meet its needs without jeopardizing the prospects of future generations to meet their own ...
  74. Enviro Science

    4. The Earth's tectonic plates and earthquakes are related because a. most earthquakes take place at or near tectonic boundaries b. during an eruption, the plates slip past one another c. of the measure of energy released by the earthquake, called magnitude d. an earthquake ...
  75. Business Communication

    You ask for feedback on a proposal and are told "I don't believe your claims. Your facts must be wrong." You are confident that your facts are indeed correct. You should: a. write a memo to the proofreader's supervisor before sending the final proposal b. make your claims more...
  76. Statistics

    The weight of bags of pretzels are normally distributed with a mean of 150 grams and a standard deviation of 5 grams. Bags in the upper 4.5% are too heavy and must be repackaged. Also, the bags in the lower 5% do not meet the minimum weight requirement and must be repackaged. ...
  77. Math

    1. The US Senate is composed of 2 senators from each of the 50 states. For a treaty to be ratified, at least two-thirds of the senators present must approve the treaty. Suppose all senators are present and 48 of them have voted in favor of a treaty. What are the possible ...
  78. Social Studies

    My most exalted Monarch - Your Majesty Queen Isabella, I am writing this letter most humbly for you to consider my request for three small ships and a crew so that I may sail west and find the shortest route to the East. I promised to chaim land for Spain and bring back riches...
  79. visual basic programming

    Write a Visual Basic program that will calculate the assessment marks of a student taking the Computer Programming subject in College. The program must be able to determine the total result and finally display the grade of that student. The program will also ensure that each ...
  80. chemistry

    2. A researcher is often required to prepare solutions in the lab. Typically, a lab provides a concentrated solution. This solution must be diluted to the proper concentration. Hydrochloric acid is a common stock solution that is typically purchased at 37.0% HCl concentration...
  81. Physics

    As a civil engineering intern during one of your summers in college, you are asked to design a curved section of roadway that meets the following conditions: When ice is on the road, and the coefficient of static friction between the road and rubber is 0.077, a car at rest ...
  82. calculus

    A dam 15 m high holds the water in reservoir . For safety reasons , the water level is maintained at a height 3 m below the top of the dam. At best of the dam , engineers have installed a vertical door in the shape of an equilateral triangle with sides of length 3 m , ...
  83. Inter. Algebra

    what is the answer to 2 square root of 18x? Do you mean 2*(18x)1/2? What does it equal. What are we to do with the problem? DrBob222, My problem states 2 square root sign & 18x underneth it. If you could help me with this problem I'd really appreciate it. It must be equal to ...
  84. physics

    I am helping my friend move into his new apartment. During the move, we have to load boxes into the back of his truck. To make it easier to load them, we've set up a metal ramp so that we can slide the boxes up to the deck of the truck. The box shown in the figure has a mass ...
  85. physics

    A stunt driver wants to make his car jump over eight cars parked side by side below a horizontal ramp. (a) With what minimum speed must he drive off the horizontal ramp? The vertical height of the ramp is 1.5m above the cars, and the horizontal distance he must clear is 20m. (...
  86. Chemistry

    Can u help me in balancing the following eqn. through oxidation no. method or half reaction method. Also please show and explain the steps. HNO3(aq.) + KI(aq.) -----> NO(g) + I2(s)+ H2O(l) + KNO3(aq.) Hoping for a quicker response. I goes from -1 to 0 N goes from +5 to +2 ...
  87. Physics

    (1) A virtual image -7 cm tall and 17 cm away from a mirror is created by an object 7 cm away from a mirror. How tall is the object? What kind of mirror created the image? What is its focal length? (2) If a 1.75 m tall man is looking at a plane mirror from an eye which is 15 ...
  88. Physics

    (1) A virtual image -7 cm tall and 17 cm away from a mirror is created by an object 7 cm away from a mirror. How tall is the object? What kind of mirror created the image? What is its focal length? (2) If a 1.75 m tall man is looking at a plane mirror from an eye which is 15 ...
  89. Earth Science

    A seismograph station is located 2000 km from an earthquakes epicenter. Explain the order that the S and P waves will arrive at the station.
  90. Geometry

    how do you make a sketch of the earth, moon, and sun during a solar eclipse so that your sketch contains similar triangles?
  91. physics

    what happen to the value g (free fall). If the rocket has launch from Earth to moon with the constant velocity. What if the rocket acclerating?
  92. earth science? volcanoes

    what kind of volcanoes are found in Iceland? Chile and Argentina? The Arabian Peninsula and the Middle East? thanks
  93. earth science

    how do i find how much water vapor is in the air when given relative humidity and an air sample that is 40 degrees C?
  94. english

    The cheetah has a thin elongated body and is said to be the fastest runner on earth. in the above sentence, runner is a noun or not
  95. physics

    If a mole of atoms were spread uniformly over the surface of the Earth, how many atoms would there be per square meter?
  96. physics

    A 2-kg block rests on a wall that is 3 m tall. What is the gravitational potential energy of the block? The force of gravity on Earth (g) is equal to 9.8 m/s2.
  97. physics

    The distance from the center of the earth to a point where the acceleration due to gravity is g/16 is none of the these. 4RE. 3RE. 16RE. 1/4RE.
  98. Science

    Trying to complete a word search. What is a 6-letter word for "State of water that is most common on Earth's surface"
  99. physics

    a projectile is fired in the earth's gravitational field with a horizontal velocity of v=9.00 m/s. How far does it go in the horizontal direction in 0.550 seconds?
  100. science

    The deepest layers of the earth is called the inner Just need to know if my answer or right or wrong. Thanks! :) inner core
  1. Pages:
  2. 1
  3. 2
  4. 3
  5. 4
  6. 5
  7. 6
  8. 7
  9. 8
  10. 9
  11. 10
  12. 11
  13. 12
  14. 13
  15. 14
  16. 15
  17. 16
  18. 17
  19. 18
  20. 19
  21. 20
  22. 21
  23. 22
  24. 23
  25. 24
  26. 25
  27. 26
  28. 27
  29. 28
  30. 29
  31. 30
  32. 31
  33. 32
  34. 33
  35. 34
  36. 35
  37. 36
  38. 37
  39. 38
  40. 39
  41. 40
  42. 41
  43. 42
  44. 43
  45. 44
  46. 45
  47. 46
  48. 47
  49. 48
  50. 49
  51. 50
  52. 51
  53. 52
  54. 53
  55. 54
  56. 55
  57. 56
  58. 57
  59. 58
  60. 59
  61. 60
  62. 61
  63. 62
  64. 63
  65. 64
  66. 65
  67. 66
  68. 67
  69. 68
  70. 69
  71. 70
  72. 71
  73. 72
  74. 73
  75. 74
  76. 75
  77. 76
  78. 77
  79. 78
  80. 79
  81. 80
  82. 81
  83. 82
  84. 83
  85. 84
  86. 85
  87. 86
  88. 87
  89. 88
  90. 89
  91. 90
  92. 91
  93. 92
  94. 93
  95. 94
  96. 95
  97. 96
  98. 97
  99. 98
  100. 99
  101. 100