1. physics

    The weight of an object is 480N on the earth and 120N on the moon,calculate the mass of the object on the moon
  2. Physical Science

    How much would 80.0 kg person weight (a) on Mars, where the acceleration of gravity is 3.93 m/s2, and (b) on Earth's Moon, where the acceleration of gravity is 4.63 m/s2?
  3. Earth Science

    Describe how weathering and erosion can be both destructive or constructive. I am still confused on the difference of erosion and weathering...
  4. earth

    #37 whenever scientist carefully measure any quantity many times they expect that: a. all the measurements will be exactly the same b. only two of the measurements will be exactly the same c. all but one of the measurements will be exactly the same d. the
  5. earth science

    How does the wavelength of the infrared portion of the electromagnetic spectrum differ from that of the visible portion of the spectrum?
  6. physical

    . On Earth the Mars rover had a weight of 9800 N. What will be its weight on mars where the acceleration due to gravity is 4 m/s
  7. Physics

    Q. Defined escape velocity obtain an expression for the escape velocity of a body from the surface of the earth?
  8. Science

    In what way is erosion NOT like weathering? A)It is a force that changes the earth's surface B)It is a destructive force C)It changes rocks in some way D)It breaks down rocks I think D??
  9. earth science

    Help please anyone? If the wet-bulb thermometer and the dry-bulb thermometer readthe same temperature, the air is said to be??? Anyone know?
  10. physics

    A 4.0 kg ceiling fan is placed 2.5 m above the floor. What is the gravitational potential energy of the fan(use Earth's value for gravitational acceleration)?
  11. science

    ok earth science what is a solstice and why do we have them?
  12. BIO 1010

    1) Which of the following are fossil fuels? a. coal b. limestone c. coral skeleton d. petroleum e. choice a and d are both fossil fuels ANSWER: E 2) Satellite and other scientific data have shown that, over the past several decades, global temperatures
  13. Science

    Read an article, and use the article to jump-start your thinking about designing your very own space mission. Think about what you want to explore in the solar system (and why!) and how you might get there. Click on the link below to read the Science
  14. PHYSICS

    a 17 of model plane is flying at a horizontal speed of 14 m/s the plane goes into a dive and levels off 21 m closer to the earth what was the ammount of potentiomal energy lost in the dive
  15. Physics

    Calculate the force of gravity between a human child (mass = 38 kg) and the planet Mars (mass = 6.4 1023 kg), when Mars is at its closest to Earth (distance = 8. 1010 m).
  16. Physics

    A certain rain cloud at an altitude of 1.90 km contains 3.20 107 kg of water vapor. How long would it take for a 2.18-kW pump to raise the amount of water from Earth's surface to the cloud's position?
  17. Physics

    The sun is 1.40•10^11m away and light travels at 3.00•10^8m/s. Calculate how long it takes light from the sun to reach the earth. Express your answer in scientific notation.
  18. physics

    Suppose the Sun is 1.52669 × 108 km from Earth. The speed of light is 2.99792 × 108 m/s. How long does it take for its light to reach us? Answer in units of min
  19. Physics

    The sun is 1.40•10^11m away and light travels at 3.00•10^8m/s. Calculate how long it takes light from the sun to reach the earth. Express your answer in scientific notation.
  20. physics

    Consider the Earth and a cloud layer 600 m above the planet to be the plates of a parallel-plate capacitor. (a) If the cloud layer has an area of 2.0 km2 = 2000000 m2, what is the capacitance?
  21. Physics

    The sun is 1.40•10^11m away and light travels at 3.00•10^8m/s. Calculate how long it takes light from the sun to reach the earth. Express your answer in scientific notation.
  22. Physics

    The sun is 1.40•10^11m away and light travels at 3.00•10^8m/s. Calculate how long it takes light from the sun to reach the earth. Express your answer in scientific notation.
  23. chem

    A weather balloon at Earth’s surface has a volume of 3.9 L at 280 K and 795 mm Hg. If the balloon is released and the volume reaches 4.05 L at 704 mm Hg, what is the temperature? Answer in units of K
  24. physics

    heading due north at 6.00 m/s relative to the water. The local ocean current is 1.53 m/s in a direction 40° north of east. What is the velocity of the ship relative to the earth?
  25. science

    if the mass of the earth is 598*10 to the power of 22km and the mass moon is 7.36*10 to the power of 22kg. calculate the difference in their masses, what is the answer in scientific notation
  26. Physics

    Evaluate the following as true or false. If the Earth shrank in size, but all other factors remained the same, all of its satellites, including the Moon, would fly off into space. a) True b) False
  27. physics

    The weight of the atmosphere above 1 m^2 of Earth's surface is about 100,000 N. Density, of course, becomes less with altitude. But suppose the density of air were a constant 1.2 kg/m/s^3. Calculate where the top of the atmosphere would be.
  28. Astronomy

    Where do you have to be on Earth to see the south celestial pole at your zenith? What is the maximum possible elevation (angle) of the Sun above the horizon at that location? On what date is this maximum elevation achieved?
  29. astronomy

    You must show your work for full credit.) Calculate the circular speed of an object that orbits the Sun at a distance of 5.2 AU (1 AU = 1.5e+11 meters, the distance between the Earth and the Sun)
  30. physics

    Mercury is an average distance of 5.79 x 107 km from the Sun. Estimate the length of the Mercurian year given that the Earth is 1.50 108 km from the Sun on the average. An explanation of how to do this would be great, thanks.
  31. physics

    A person can jump a horizontal distance of 2.59 m on the Earth. The acceleration of gravity is 11.8 m/s2 . How far could he jump on the Moon, where the free-fall acceleration is 0.297g? Answer in units of m
  32. physics

    The weight of the atmosphere above 1 m^2 of Earth's surface is about 100,000 N. Density, of course, becomes less with altitude. But suppose the density of air were a constant 1.2 kg/m/s^3. Calculate where the top of the atmosphere would be.
  33. science

    where can you see earth's atmospere clearly Well, you can see light that is scattered from microscopic dust particles in the atmosphere during the day from any point: That blue color of the sky is that scattered light.
  34. history

    all I need is sequence of events of Earth's history for the Mesozoic and Cenozoic eras. just facts that I could put up. I believe the Mesozoic era was the fist one with humans in it? (IN ORDER PLEAEE)
  35. Physics

    Physics Help... Applying Newtons Laws Grade 11? On the surface of the earth a geological hammer has a mass of 1500g. Determine its mass and weight on Mars where g=3.6 m/s^2.
  36. Physics

    A rocket that weighs 7840 N on earth is fired. The force of propulsion is + 10 440N. Determine a) the mass of the rocket, b) the acceleration of the rocket, c) the velocity of the rocket at the end of 8.0 s.
  37. Chemistry

    A weather balloon at Earth's surface has a volume of 4.00 L at 304 K and 755 mm Hg.? If the balloon is released and the volume reaches 4.08 L at 728 mm Hg, what is the temperature? What gas law do you use?
  38. Astronomy

    Where do you have to be on Earth to see the south celestial pole at your zenith? What is the maximum possible elevation (angle) of the Sun above the horizon at that location? On what date is this maximum elevation achieved?
  39. EARTH SCIENCE

    Discuss the distribution of seafloor sediments in the ocean basins. What are the different types of sediments? What are the factors that control their distribution (geologic setting, climate, etc.)?
  40. science

    If sam drops a 40 kg mass from a height of 20 meters on earth how much was the potential energy of the mass before he dropped it a-800 j b-784 n-m c-800 n-m d-7840 j e- 200 j
  41. physics

    You must show your work for full credit.) Calculate the circular speed of an object that orbits the Sun at a distance of 0.2 AU (1 AU = 1.5e+11 meters, the distance between the Earth and the Sun)
  42. college

    Suppose that it takes about 3 days for a space vehicle to travel from Earth to the moon. About how long would it take the same space vehicle traveling at the same speed to reach Pluto?
  43. physics

    A helicopter is ascending vertically with a speed of 5.03m/s . At a height of 132m above the Earth, a package is dropped from the helicopter. How much time does it take for the package to reach the ground?
  44. physics

    Calculate the mass of Jupiter knowing that a person who weighs 490 N on the earth's surface would weight 1293 N on the surface of that planet. Jupiter has a radius of 7.15 × 10^7 m.
  45. science

    the distance from the earth to the moon is 240000 miles. if the speed of light is 2.998 x 10^8 meters per second, how long does it take for light reflected from the moon to reach our planet?
  46. physics

    The weight of the atmosphere above 1 m^2 of Earth's surface is about 100,000 N. Density, of course, becomes less with altitude. But suppose the density of air were a constant 1.2 kg/m/s^3. Calculate where the top of the atmosphere would be.
  47. SCIENCE

    The burning of fossil fuels cause the earth to get warmer by putting carbon dioxide in the atmosphere and the carbon dioxide traps heat. MY GUESS: TRUE
  48. physics

    Calculate the force of gravity between a newborn baby (mass = 2.6 kg) and the planet Mars (mass = 6.4 * 10^23kg) when Mars is at its closest to Earth (distance = 5.6 * 10^10m).
  49. Eng

    Which one of the following statements is an example of a complex sentence? A. Neap tide is the best time for digging clams. B. Sparrows as the bird feeder compete for seeds. C. The earth was spinning when Lucas firs saw Lucille. D. The crescent moon is a
  50. earth science

    #33 When conducting an experiment that deals with boiling chemicals, which of the following pieces of equipment would be most important to protect you from being injured? a. fire blanket b. eye wash c. tongs d. goggles I cant decide between c and d because
  51. Social Studies

    How are equal-area projections of Earth inaccurate? A. There are distortions near the center of the map. B. Directions and the shapes of the landmasses are distorted. C. This projection does not show true sizes. D. Areas close to the poles are
  52. Science

    1, 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.
  53. English-Grammar

    The underlined words (I put them in parantheses) are an example of a(n) ___________. (When the earth, moon, and sun are in line), an eclipse occurs. A. adverbial clause B. adjectival clause C. noun clause My answer is C.
  54. algebra

    Write a formula that relates temperature t in degrees Fahrenheit at altitude h (in thousands of feet) and a ground temperature of 65ºF. State any restrictions on h. b. Find the temperature at 11,000 ft above Earth’s surface.
  55. Calculus

    Suppose a ball is thrown straight up into the air, and the height of the ball above the ground is given by the function h(t) = 6 + 37t – 16t2, where h is in feet and t is in seconds. At what time t does the ball stop going up and start returning to
  56. physical science

    If sam drops a 40 kg mass from a height of 20 meters on earth how much was the potential energy of the mass before he dropped it a-800 j b-784 n-m c-800 n-m d-7840 j e- 200 j
  57. earth science

    how do chemical rocks form, are some types of limestone considered a chemical rock, and what mineral does rock salt crystalize from? thank you so much if you choose to answer. im so stumped.
  58. Geog

    In one Minute of time, how does the earth rotate in minutes or seconds of longitude? rotation=360 degrees/ number minutes in the day. 360/1440 = 0.25 is that the right answer
  59. earth science

    discuss stellar evolution(briefly describe each stage). what forces are opposing one another throughout the life of a star and how do they influence the various stages in the life cycle of a star?
  60. Science

    What are tides and how are they caused? Tides are the alternate rises and falls of large bodies of water. They are caused by the gravitational interaction between the Earth and the Moon. Please correct me if I'm wrong, thanks
  61. principles of physics

    Calculate the force of gravity between a newborn baby (mass = 2.6 kg) and the planet Mars (mass = 6.4 * 10^23kg) when Mars is at its closest to Earth (distance = 5.6 * 10^10m).
  62. physics

    Calculate the mass of Jupiter knowing that a person who weighs 490 N on the earth's surface would weight 1293 N on the surface of that planet. Jupiter has a radius of 7.15 × 107 m.
  63. University Physics

    A 320.0 m tall tower is built on the Equator. How much faster (in m/s) does a point at the top of the tower move than a point at the bottom. The radius of the Earth is 6400 km.
  64. science

    Oblique rays are different from vertical rays because they a) contain more solar energy b) strike the earth at an angle greater than 90 degrees c)spread their energy over a larger surface area d) a and b e) b and c i think between d and e
  65. Earth science..... help urgent

    hi can anyone help me? my problem is that i need to write a autobiography about the "LIFE CYCLE OF ROCKS". andf i have no idea how to start it.....plz help me....its urgent....give me some clues how to start !!!!
  66. English-Accented Syllables

    I don't understand how to determine how many accented syllables there are in lines of poetry... How do you tell? Example: When the north wind blows its icy air to cool the earth,
  67. EARTH SCIENCE

    Discuss the distribution of seafloor sediments in the ocean basins.What are the differents types of sediments? What are the factors that control their distribution(geologic setting climates, etc)?
  68. physics 1

    Antarctica is roughly semicircular, with a radius of 2000km. The average thickness of its ice cover is 3000m. How many cubic cm of ice does Antarctica contain? (Ignore the curvature of Earth).
  69. Earth Science

    To measure the strength of an earthquake, you can use either a______scale or______scale. A)Richter B)seismograph C)mercalli intensity part:2 A)moment magnitude B)seismogram C)mercalli intensity
  70. yr 8 re

    what are genesis 1 & 2? i've never been a great bible reader and i thought genesis was just when God created the Earth and so on, but I'm supposed to know the difference in WRITING,like calling God 'Lord' amd stuff... please help!
  71. Astronomy

    You must show your work for full credit.) Calculate the circular speed of an object that orbits the Sun at a distance of 0.2 AU (1 AU = 1.5e+11 meters, the distance between the Earth and the Sun): (Points : 10)
  72. earth science

    how do chemical rocks form, are some types of limestone considered a chemical rock, and what mineral does rock salt crystalize from. thank you if you choose to answer. im so stumped.
  73. geometry

    what is the maximum broadcasting radio from a radio tower 1800ft tall the radius of earth is 3960 miles and you can assume thtat the ground around the tower is nearly flat
  74. physics

    Find the force of gravity between a newborn baby (mass = 2.9kg ) and the planet Mars (mass = 6.4×1023kg), when Mars is at its closest to Earth (distance = 5.6×1010m).
  75. physics

    The masses of the earth and moon are 5.98x1024 and 7.35x1022 kg, respectively. Identical amounts of charge are placed on each body, such that the net force (gravitational plus electrical) on each is zero. What is the magnitude of the charge placed on each
  76. uphysics

    Some planetary scientists have suggested that the planet Mars has an electric field somewhat similar to that of the earth, producing a net electric flux of 3.57×1016 into the planet's surface.
  77. Physics

    A laser beam is directed at the Moon, 380,000 km from Earth. The beam diverges at an angle of 4.6×10−5 rad. 1. What diameter spot will it make on the Moon?
  78. physics

    The masses of the earth and moon are 5.98 × 1024 and 7.35 × 1022 kg, respectively. Identical amounts of charge are placed on each body, such that the net force (gravitational plus electrical) on each is zero. What is the magnitude of the charge placed on
  79. Algebra

    w=Cr^-2 Suppose that an object is 100 pounds when it is at sea level. Find the value of C that makes the equation true. (Sea level is 3,963 miles from the center of the earth.)
  80. physics

    Two pellets, each with a charge of 1.0 microcoulomb (1.0×10−6 ), are located 4.0 (4.0×10−2 ) apart.A)find the electric force between them B)What would be the mass of an object that would experience this same force in Earth's gravitational
  81. physics

    ind the force of gravity between a newborn baby (mass = 2.9kg ) and the planet Mars (mass = 6.4×10^23kg), when Mars is at its closest to Earth (distance = 5.6×10^10m).
  82. physics

    If the acceleration due to gravity on the Moon is 1/6 that what is on the Earth, what would a 100 kg man weight on the Moon? If a person tried to simulate this gravity in an elevator, how fast would it have to accelerate and in which direction?
  83. science

    Oblique rays are different from vertical rays because they a) contain more solar energy b) strike the earth at an angle greater than 90 degrees c)spread their energy over a larger surface area d) a and b e) b and c i think between d and e
  84. physics

    At what speed should a space probe be fired from the earth if it is required to still be traveling at a speed of 3.48 km/s, even after coasting to an exceedingly great distance from the planet (a distance that is essentially infinite)?
  85. science

    Oblique rays are different from vertical rays because they a) contain more solar energy b) strike the earth at an angle greater than 90 degrees c)spread their energy over a larger surface area d) a and b e) b and c i think between d and e
  86. Earth Science

    20. Contrast point source pollution and nonpoint source pollution. Can someone help me please?!?!?! Asap please?!?!?!?!
  87. Math

    The mass of Saturn is about 100 times the mass of Earth which is 5.97 x10^23 kg. How heavy is Saturn?
  88. english

    What do you think is the most peace place on earth? I think of my home, but I want some other ideas. Also, can you explain why you think it is a peace place? Any help will be apprecaited.
  89. Science

    How much would 1kg weigh on the Moon if the pull of gravity there is about one-sixth of the pull of gravity on earth?
  90. Maths

    The speed of a point A due to the rotation of the earth is twice that of a point B.If A is on latitude 22°N.calculate the latitude of B
  91. Science

    scientists often use models to Study the movement of earth and it's moon. Why do they use models to study the movements?
  92. maths

    the longest and shortest distance of eareth from sun are r1 and r2. what is the distance of the earth from the sun when it is perpendicular to it
  93. Physics

    Gravity on the moon is only 1/6 as strong as gravity on the Earth. What is the weight of a 55.3 kg dune buggy on the moon?
  94. earth science

    why is the arrival time for the p - wave earlier that the arrival of the s-wave the same seismograph station?
  95. physics

    How would your Mars weight compare to your earth weight if the acceleration due to gravity on Mars is 3.71 m/s2?
  96. math

    the steps to a math quiz. the earth rotates once every 23 hours 36 minutes 4 seconds.how many seconds is that?
  97. Physics

    The weight of a rock on the moon is 0.85 N. If acceleration due to gravity on the moon is 1.7 m/s2, what will be its weight on the earth
  98. Science

    The force of gravity on Jupiter is much stronger than the force of gravity on Earth. Which of the following explains why this is true?
  99. physics 12

    If the Earth has a mass of 5.98*10^24 kg and orbits the Sun at a radius of 1.43*10^11 meters. Find the mass of the Sun. Thank you.
  100. Physics

    The weight of a rock on the moon is 0.85 N. If acceleration due to gravity on the moon is 1.7 m/s2, what will be its weight on the earth