1. Algebra

    1. Many people know that the weight of an object varies on different planets, but did you know that the weight of an object on earth also varies according to the elevation of the object? In particular, the weight of an object follows this equation: w=Cr -2 where C is a ...
  2. science

    I'm stuck on the following questions 1)The geocentric model of the universe states that the Earth is the center of the universe. This is an example of a A)scientific conclusion B)pseudoscience C)scientific law*** D)Scientific method Through process of elimination i know its ...
  3. 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 ...
  4. Physics

    In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.31 × 106 m/s.Find the central force acting on the electron as it revolves in a circular orbit of radius 4.95 × 10−11 m. Answer in units of N. Find the centripetal acceleration of the ...
  5. PHYSICS

    A long-straight wire carries a current and is aligned with the North-South direction. You place a compass 4 cm directly above the wire and above the North/East/South/West plane. The compass needle, which initially pointed North (far away from the wire) is now deflected by 20o ...
  6. earth space science

    how are each of the air masses related and/or different from each other? Are you talking about the various layers of the atmosphere?
  7. earth science

    which of the following element are found in the Earths crust? iron oxygen calcium all of the above
  8. Earth Science

    According to the condensation theory, the most important factor for the formation of our planets was _____.
  9. earth science

    What are the main basic thing that we need to know about erosion? some are like the agents, running water .... and please tell me some more...
  10. Physics

    What is the amount of CO2 added to the earth's atmosphere each year from fossil fuels?
  11. earth science

    The Mororovicic Discontinuity marks the change in rock density and elasticity between the:
  12. surface processes on earth

    What is the most significant factor that ontros yhe development of soil.
  13. earth science

    What is the most abundant fossil fuel? A:Coal B:Gas C:Wood D:Oil
  14. Astronomy

    If stars should always be visible, where should you be located on earth? Can I answer this considering the celestial sphere and the ecliptic? I am not sure how...
  15. earth science

    Which of the following is not an example of a mineral crystal shape? A. Pyrite B. Kryptonite C. Quartz D. Calcite i think its A am i right
  16. earth

    if the illustration is the effect of freezing water on rock what term best decribe the process?
  17. physics

    The diameter of the earth is about 7.6 x 10^3 miles. What is the linear velocity of a person, on the equator, in feet per second?
  18. geology

    True or False: Sand dunes are one of the most stable features on the Earth's surface.
  19. EArth Science

    Give positive and negative effects of climate change in Canada..
  20. science

    how do hydrogen bonds relate to the transfer off heat from the equator towards the poles of earth
  21. Earth Science

    What are the minimum and maximum durations of daylight at a latitude of 39 degrees north? Thanks.
  22. earth

    i have an acrostic poem i have to do for school on describing warm and cold fronts, but i can't think of some of the words
  23. Chemistry

    5. The elements are related by properties in groups.- F? 7. In Earth's environment, hydrogen is a metal.- T? Thanks -MC
  24. Science 8R - HW Qs. Check

    How long does it take the earth to rotate on its axis? my answer - 365 days right????
  25. Science 8R - HW Qs. Check (#2)

    How long does it take the earth to revolve around the sun? my answer - 365 days right????
  26. wireless communications

    what is the period of the space shuttle traveling at 250km above the earth and what is its velocity
  27. Science

    Explain- how would the gravitational force between Earth and the Moon change if the distance between them increased?
  28. 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.
  29. earth science

    state the mostly reason for the differences in the weathering rate of the three rock materials
  30. Physics

    What thrust does a 350 model rocket need in order to have a vertical acceleration of 14.0 on the Earth?
  31. science

    If you Weighed 360 pounds on Earth with your space suit on, what would you weigh on the moon? Why?
  32. science

    which types of lava eruptions cover the largest area on Earth's surface?
  33. science

    why is it important that the tumble dryer's plug has properly connected earth wire?
  34. SCIENCE

    Which type of lava eruptions cover the largest area on earth's surface?
  35. earth

    When burning coalin a stove, which kind of energy transformation is taking place?
  36. science

    1. Earth's capital includes all of the following except a. wildlife. b. nutrients. c. water. d. soil. e. sunlight.
  37. 6th grade

    The large landmasses on Earth are called continets,oceans, or plateaus
  38. science

    At the beginning of the____Era, the earth had no crust. Just need to know if my answer or right or wrong. Thanks! :) modern era
  39. science

    A falling star is really a ______burning up in the atmosphere of the earth. Just need to know if my answer or right or wrong. Thanks! :) meteor
  40. earth

    please give me some important tips about a topic 'tiger in trouble'. I have to prepare a chart on this.
  41. science

    Explain why all life on earth is ultimately dependent on a continued supply of sunlight?
  42. 4th Grade Science

    How much time will it take for Earth to reach the opposite side of the Sun?
  43. Earth Science

    7. The original location of an earthquake is also known as the A. hotspot. B. magnitude. C. horizon. D. epicenter.
  44. geology (science)

    how does the earth's four subsystems (lithosphere, hydrosphere, biospehere, atmosphere) interact with one another?
  45. earth science

    another name for the deep trenches long the edge of south america are called
  46. Physics

    A projectile is shot straight up from the earth's surface at a speed of 1.20×104 KM/HR. How high does it go?
  47. English

    Do I need parentheses or dashes in this sentence? Copernicus as you might know. decided that the earth travels around the sun.
  48. Physics

    A projectile is shot straight up from the earth's surface at a speed of 1.20×104 km/hr. How high does it go?
  49. earth science

    if continental crust were thinner than its average thickness of 40 km, would it depress the mantle more or less than it does now?
  50. physics

    How close must two electrons be if the electric force between them is equal to the weight of either at the earth's surface?
  51. Earth Science

    Two meanings for the horizontal lines on the geologic History NYS chart.
  52. Earth Science

    Why is a minimum of three seismic stations needed to find the epicenter of an earthquake?
  53. physics

    Calculate the effective value of g, the acceleration of gravity (in meters/second^2), at 5100 km above the earth's surface.
  54. sience

    Which of the following can be expected to occur as climate change continues on Earth? HELPPPPPPPPPPP ASAP!!!
  55. earth

    what factors contribute to the formation of fertile, deep topsoil in temperate regions?
  56. earth

    How do Plate tectonics affect the Atmosphere, Hydrosphere, Geosphere, and Biosphere? Thanks SO much in advance!:D
  57. spanish

    does anyone know the story called " What ought a man to do on earth" It is from penn foster. Can I find it on the Internet if so where
  58. 5th grade science

    What is the continous movement of water between Earth's surface and the air?
  59. 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?
  60. space

    in whgich group are the spheres of earth listed in order of increasing density?
  61. miami dade

    a student designed an experiment to demonstrate the interactions between earth systems
  62. Biology 1

    Briefly describe the basic characterisitics that all living things on Earth have in common.
  63. grade nine space

    What is the difference between the terms rotation and revolution? I need to use the Earth to support my answer.
  64. science

    what is the phsical layer of earth that is dividedunto tetonic plates is called the _____________
  65. 7th grade science

    Does the bending (folding and faulting) of Earth create sound?
  66. earth

    When combining atoms, how do i use the balloons and letter notations to show the product formed?
  67. physics

    How might you determine the age of a star from an Earth-based telescope? What measurements might you make?
  68. physics

    calculate angular momentum and rotational kinetic energy of earth about its own axis
  69. physics

    A person can jump to a height of 1.5m on surface of earth. Find the velocity with which he jumps.
  70. physics

    How might you determine the age of a star from an Earth-based telescope? What measurements might you make?
  71. physics

    If a man weighs 820N on d earth what would be on Jupiter, where the acceleration due to gravity is 25.9m/s
  72. physics

    At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 0.60%?
  73. science

    if Earth's axis were not tilted,could any area have both a hot summer and a cold winter?
  74. earth science

    how did the extinction of dinasaurs allow for the evolution of more complex creatures, such as human beings?
  75. earth Geology

    This is just a question that I was curious about, why do mountain belts run parallel to coastlines? Thanks
  76. Earth Science

    1Organizing information in a meaningful way is an example of (1)prediction (2)measurement (3)observation (4)classification (4), right?
  77. physics

    A stone is dropped from a ledge 45m high. What will its speed on reaching the Earth be?
  78. PHYSICS

    At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 0.40%?
  79. physics

    Calculate the effective value of g, the acceleration of gravity (in meters/second^2), at 8600 km above the earth's surface.
  80. Earth Science

    Renewable resources can be replaced as fast as they are consumed? It is true or false?
  81. science

    what type of eclipse would you expect to see if the moon passes directly between earth and the sun
  82. Earth Science

    12.   The original location of an earthquake is also known as the  A. horizon. B. epicenter. C. hotspot. D. magnitude. B?
  83. biology

    would it be easier if someone who doesn't have proprioception to go to space and return back to earth to walk normally or would it be the same?
  84. Living environment

    in what period of earth time did the great increase in animal diveristy
  85. Chemistry

    Why are the alkali and alkaline earth metals more reactive than other elements on the periodic table?
  86. science

    why does an person in space craft orbiting earth experiance a feeling of weightless?
  87. Earth Science

    which two criteria must be met before scientists can use radiocarbon dating? I need serious help dudes lol
  88. Earth Science

    Why is a minimum of three seismic stations needed to find the epicenter of an earthquake?
  89. biology

    briefly describe the basic characteristics that all living things on earth have in common
  90. Physics urgent

    What is the weight of a 76 kg astronaut on the Moon where the value of 'g' is only 17% the strength of 'g' on the Earth? (Answer should be expressed in N).
  91. social studies

    what were the lines of defence dug into the earth? and what was willsons plan for peace?
  92. life science

    What is the highest point on earth, which is topped by Ordovician marine limestone
  93. Earth science

    What two thing must scientists measure to find absoluite age of rock?
  94. Earth Science (Geography)

    In what way can the soils, geology and slopes affect river flow?
  95. earth science

    how did the extinction of the dinasaurs allow for the evolution of more complex creatures, such as human beings?
  96. Earth and Environmental Science

    The solar wind can be thought of as evidence for which theory of light?
  97. science

    What is the magnitude of g at a height above Earth's surface where free fall acceleration equals 6.5m/s^2?
  98. science

    Why does Earth get more energy from the sun than from all the other stars in the universe combined? BTS ARMY
  99. Physics

    A projectile is shot straight up from the earth's surface at a speed of 1.20 x 104 km/hr. How high does it go?
  100. science

    Let's say Glenn's trip around the earth took about 5 hours. that is how many times as long as Shepard's flight?
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