1. Science

    What units of measurement do you use to measure the earth to... 1. Moon 2. Galaxy 3. Sun 4. Communication satellite 5. Pluto 6. Proxima Centauri
  2. Science

    It can be inferred from the passage that radioactive dating is important for estimating the age of A) all known meters B) all existing planets C) the earth D) the trees
  3. Science

    How many minutes are required for a radio signal to travel from Earth to a space station on Mars if Mare is 7.83 x 10 to the 7th power km?
  4. Math

    Let d(t) be the shortest distance between Earth and the nearest other planet as a function of time t (where t is in years and t = 0 is noon on January 1, 1000 A.D., say). Is d continuous? Why or why not?
  5. science(8th Grade)

    List three things aboout Minerals of the Earth Crust Author Holt Rinehart & Winston
  6. English

    Description: does anyone has teas 6, the new version , passage about new York central park, earth cousin, or time management , if i anyone has it let me know am willing to pay anything for it
  7. science

    all of the following are explanations for glacial periods EXCEPT. a. varying solar energy b. volcanism c. biological organisms d. Earth's orbit's precession
  8. Physics

    Suppose the surface (radius = r) of the space station in the figure is rotating at 38.6 m/s. What must be the value of r for the astronauts to weigh one-half of their earth-weight?
  9. science

    how does heat flow and movement of material within Earth move the continents,cause earthquakes and volcanic eruptions and create mountains
  10. physics

    What is the minimum speed, relative to the Sun, necessary for a spacecraft to escape the solar system if it starts at the Earth's orbit? Please tell me what formula
  11. Science

    for anybody:there is evidence that human beings could be a part of the 6th extinction on earth. Do you believe this is true? Why is Why not? Write a statement explaining your beliefs.
  12. SOCIAL STUDIES

    What are the three forces that change the shape of the land and what are the effects do they have on the earth? http://en.wikipedia.org/wiki/Erosion
  13. 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
  14. Earth Science

    1.   What term is used to describe the process by which agents are carried from one place to another because of erosion?  A. Disposition B. Deposition C. Reposition D. Transplantation B?
  15. 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
  16. chemistry

    why does a weather balloon get bigger as as it rises from Earth's surface? I don't understand how this relates to "kinetic molecular theory"
  17. Science

    Cassie is writing an equation to show the effect of gravitational pull of the sun and moon on tidal range which equation would Cassie use to show the effect of the sun and the moon on Spring tides? A - sun + moon = spring tides B - sun + Earth = spring
  18. Science

    Cassie is writing an equation to show the effect of gravitational pull of the sun and moon on tidal range which equation would Cassie use to show the effect of the sun and the moon on Spring tides? A - sun + moon = spring tides B - sun + Earth = spring
  19. Science

    1.Which of the following best describes an atom? A protons and electrons grouped together in a random pattern B protons and electrons grouped together in an alternating pattern C a core of protons and neutrons surrounded by electrons D a core of electrons
  20. science

    If element X has 85 protons, how many electrons does it have? electrons
  21. science

    joey drives his car 7 kilometers north. he stops for lunch and then drives 5 kilometers south. what distance did he cover?
  22. physics

    A 55-kg person walks due north with a speed of 1.1 m/s, and her 7.0-kg dog runs directly toward her, moving due south, with a speed of 1.8 m/s.
  23. history

    What would be some supporting ideas to the statement the north didn't so much win the civil war as the south lost the civil war?
  24. physic

    one airplane travels due north at 300 km/h while another travels due south at 300km/h. select the false statement.
  25. physics

    what is the difference in the induced current in a wire loop when a magnet goes through the loop north side first, south side first and sideways?
  26. reference frames

    Car A is heading north with a velocity of 14 m/s. Car B is traveling south with a velocity of 19 m/s. What is the relative motion between the two cars? A. 5 m/s B. 14 m/s C. 19 m/s D. 33 m/s would this be A, since 19-14 = 5?
  27. physics

    The treasure map gives the following directions to the buried treasure: "Start at the old oak tree, walk due north for 490 paces, then due east for 120 paces. Dig." But when you arrive, you find an angry dragon just north of the tree. To avoid the dragon,
  28. Physics

    Calculate the electric force between these two electrons. The value of the Coulomb constant 9 × 109 N · m2/C2 and the elemental charge is 1.6×10−19C. Answer in units of N (Newtons)
  29. science

    a 2 kg mass accelerates at 20 m/s/s while being pushed by a 44 N force. Find the force of friction. Net force = Force pushing - Force friction. The net force here is 2 kg x 20 m/s/s.
  30. Physics

    A 2.98 kg ball is dropped from the roof of a building 158.3 m high. While the ball is falling to Earth, a horizontal wind exerts a constant force of 13.1 N on the ball. A.)How long does it take to hit the ground? The acceleration of gravity is 9.81 m/s^2.
  31. science

    lunar probes: what else does a lunar probe have other than a camera? i need to know today becasue it is for aproject and it is due tomorrow please help!!!!!! You will find a description of some of the first lunar probes that actually landed on the moon at
  32. U.S.History

    i'm stuck on this essay question.. Discuss how both the North and South defended their position on the question of secession by tracing the history of their argument?
  33. Physics

    If a car travels 60 mi. north for one-half hour, 100 mi. west for one hour, and 60 mi. south for 30 minutes, what is the total displacement of the car? PLEASE HELP ME!!!!
  34. i.p.c

    An ostrich runs north in a straight line for 21 meters. She then turns around and runs 25 meters back toward her nest (south) on the same path. What is her displacement?
  35. Math

    A ship travels N27°E for 110 mi.How far directly north/south and how far directly east/west is the ship from starting point?
  36. physics

    A cat moving in a desert walks 15m due north, then 6m due east then south calculate the resultant of the cat.
  37. physics

    A boy moves 400m towards north 300m towards west and again 400m towards south calculate displacement of the boy from initial position
  38. Science

    An airplane is flying 200mph at 50 degrees north of east. Wind velocity is 50mph due south. What is the velocity of the airplane?
  39. physics

    Three forces act on a 3 kg box: 10 N South-west, 17 N North-west, 5 N due East. What is the acceleration of the box?
  40. physics

    An iron wire has a cross-sectional area equal to 1.20 10-5 m2. Carry out the following steps to determine the drift speed of the conduction electrons in the wire if it carries a current of 34.0 A. (a) How many kilograms are there in 1.00 mole of iron? 1
  41. chemistry

    someone can check my answer for me? and b) Shape and Bond Angle answer would be great too! :) a) NF3 Structure = 26 electrons, Shape = trigonal pyramidal, Bond Angle = 105.5. b) TeCI2 Structure = 30 electrons, Shape = ? Bond Angle = ? c) CCI4 Structure =
  42. Physics

    A train at a constant 41.0 km/h moves east for 28 min, then in a direction 53.0° east of due north for 15.0 min, and then west for 64.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of
  43. physics

    A train at a constant 41.0 km/h moves east for 38 min, then in a direction 44.0° east of due north for 25.0 min, and then west for 59.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of
  44. physics

    A train at a constant 68.0 km/h moves east for 41 min, then in a direction 65.0° east of due north for 22.0 min, and then west for 60.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of
  45. physics

    A train at a constant 68.0 km/h moves east for 41 min, then in a direction 65.0° east of due north for 22.0 min, and then west for 60.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of
  46. Physics

    A train at a constant 44.0 km/h moves east for 42 min, then in a direction 45.0° east of due north for 17.0 min, and then west for 51.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of
  47. Physics

    A train at a constant 41.0 km/h moves east for 38 min, then in a direction 44.0° east of due north for 25.0 min, and then west for 59.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of
  48. phyics

    A train at a constant 44.0 km/h moves east for 42 min, then in a direction 45.0° east of due north for 17.0 min, and then west for 51.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of
  49. Physics

    A train at a constant 41.0 km/h moves east for 38 min, then in a direction 44.0° east of due north for 25.0 min, and then west for 59.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of
  50. Physics

    A train at a constant 44.0 km/h moves east for 42 min, then in a direction 45.0° east of due north for 17.0 min, and then west for 51.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of
  51. science

    How many times did Earth orbit the sun between 140 CE and 1543 , how do you figure this up???? If you know how many years that is, the earth orbits the sun once a year. I hope this helps. Thanks for asking. How many years is 140 Ce to 1543 ?? We need to
  52. physics

    The magnetic field in a loudspeaker is 0.2 T. The wire consists of 308 turns wound on a 4.12 cm diameter cylindrical form. The resistance of the wire is 8.2 Ω. Find the force exerted on the wire when 15.8 V is placed across the wire. Answer in
  53. Chemistry

    Can somebody check my answers 1. If a small piece of sodium is dropped into water, it begins to react, forming hydrogen gas and sodium hydroxide. In the equation, 2Na (s) + 2H2O (l) → 2NaOH (aq) + H2 (g), the sodium hydroxide that is formed is a A.
  54. chemistry

    An experiment is set up in which a copper surface is irradiated with high-intensity photons with a wavelength of 15.0nm. Electrons ejected from the surface are found to have a velocity of .548% of c. What is the binding energy of copper's most weakly bound
  55. Chem Check Please!!!

    In an octahedral complex, electrons in dz^2 and dx^2-y^2 orbitals experience a greater repulsion from the lone pairs of electrons on ligands because these orbitals a. contain more electrons than the other three d orbitals. b. each contain one unpaired
  56. Chemistry

    Earth's oceans have an average depth of 3800 m, a total area of 3.63 108 km2, and an average concentration of dissolved gold of 5.8 10-9 g/L. (a) How many grams of gold are in the oceans? (b) How many cubic meters of gold are in the oceans? Assuming the
  57. physics

    A 51.4 N force is applied to the outer edge of a door of width d = 2.72 m a) Find the torque when the force acts perpendicular to the door. N · m (b) Find the torque when the force acts at an angle of è = 11.5° with respect to the door surface. N · m
  58. PHYSICS

    a motorcycle is driven 50 km west then 30 km south and 25 km 30 degree west of south show the vector diagram find the total displacement of motorcycle
  59. physics

    Compute the force needed on the following shapes to completely submerge them in water for each of these materials: oak of average density, Styrofoam, and hollow aluminum with a 0.5cm wall thickness. A cube 10cm on a side, a cylinder 5cm long and 9cm in
  60. Science need help ASAP!

    The closer together magnetic field lines are, the _____ the magnetic force. closer farther stronger weaker Magnetic poles always exist in north-south poles. true*** false A(n) _____ is an electric circuit that produces a magnetic field. magnetic battery
  61. Chemistry

    Atom A- 6 protons, 6 electrons, 7 neutrons Atom D- 6 protons, 6 electrons, 8 neutrons Atom X- 7 protons, 7 electrons, 8 neutrons Atom Z- 8 protons, 8 electrons, 9 neutrons Which two atoms are isotopes of the same element? a. A and D b. A and Z c. X and D
  62. PHYSICS *_* HELP PLEASE

    A spring scale being used to measure the weight of an object reads 17.1 N when it is used on earth. The spring stretches 4.40 cm under the load. The same object is weighed on the moon, where gravitational acceleration is 1 6 g. Find the reading of the
  63. physicss

    A spring scale being used to measure the weight of an object reads 17.1 N when it is used on earth. The spring stretches 4.40 cm under the load. The same object is weighed on the moon, where gravitational acceleration is 1 /6 g. Find the reading of the
  64. PHYSICS!!!!HELP PLEASE

    A spring scale being used to measure the weight of an object reads 17.1 N when it is used on earth. The spring stretches 4.40 cm under the load. The same object is weighed on the moon, where gravitational acceleration is 1 /6 g. Find the reading of the
  65. algebra

    The city commission wants to construct a new street that connects Main Street and North Boulevard as shown in the diagram. The construction cost has been estimated at $110 per linear foot.Find the estimated cost for constructing the street. (North Blvd. is
  66. physics

    You are on an airplane traveling 30° south of due west at 130.0 m/s with respect to the air. The air is moving with a speed 31.0 m/s with respect to the ground due north. 1) What is the speed of the plane with respect to the ground? 2) What is the heading
  67. Urgent Plz Help?!?!?!?

    1. which factor contributed most to increase importance of literature in American culture during the 19th century? A.)the success of major social-reform movements B.)the spread of utopian communities throughout the nation C.)the migration of European
  68. Statistics

    A bolt manufacturer is using a hypothesis test with α = 0.01 to see if the diameter of their 0.75 cm diameter bolts are being manufactured properly. The goal is to have the average bolt diameter be 0.75 ± 0.0075 cms.
  69. math

    A man facing north turns to face south-west .Through how many degree did he turn if a. he turned clockwise b. he turned anti-clockwise
  70. math

    A plane flew due south from a point A, 60°north and 45°east to a point B.The distance covered by the plane was 8000km. Determine the position of B.
  71. Math

    A boat travels 9 km due south and then 7 km due west. What angle should the boat make with the north line to return to the base (see figure to the right)?
  72. Continents

    I need to know if these are all the continents and the correct spelling for a quiz tommrow. --Africa Aisa Auntartica Austraila North America South America Eroupe-- THANKS!!! :D
  73. Physics

    An ostrich runs north in a straight line for 21 meters. She then turns around and runs 25 meters back toward her nest (south) on the same path. What is her displacement?
  74. Math Help Please

    An oil refinery is located on the north bank of a straight river that is 2 km wide. A pipeline is to be constructed from the refinery to storage tanks located on the south bank of the river 6 km east of the refinery. The cost of laying pipe is $400,000 per
  75. 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
  76. Math!! (repost) really need help!!

    A cone has a diameter of 24 in. and a height of 10in. What is the volume of s cone? use 3.14 as an approximation.. final answer in tenths - Im stuck between two answers: 94.25 because if I do 3 x 10 to find the volume. I say 3 because the diameter is 24
  77. Physics

    A ferryboat transports tourists among three islands. It sails from the first island to the second island, 4.38 km away, in a direction 37.0° north of east. It then sails from the second island to the third island in a direction 76.5° west of north.
  78. PHYSIC

    A ferryboat transports tourists among three islands. It sails from the first island to the second island, 4.38 km away, in a direction 37.0° north of east. It then sails from the second island to the third island in a direction 76.5° west of north.
  79. Forces Within and Deciphering Earth's History

    If you find a large piece of granite that, upon inspection, contains smaller fragments of sandstone, which would you say is older, the granite or the fragments of sandstone? A. Sandstone B. It's impossible to tell. C. They're both the same age. D. Granite
  80. history

    What social, political, and economic changes pulled the North and the South further apart? What was the final determining factor that led to Southern secession? What social and economical changes discussed in previous chapters fueled sectional conflict?
  81. Social studies...

    How did the Fugitive Slave Act and the Kansas-Nebraska Act further divide the North and South? What role did the concept of popular sovereignty play in these conflicts? Do you think there was any way to avoid the violence that came out of this era? Could
  82. USA PoliScience

    Puerto Ricans who immigrate to the United States are most likely to settle in California Texas New Jersey New Mexico Arizona Usually the docs say Upper north east. I would say the closest would be New Jersey? But there is a possibility of the south as
  83. Math

    A car is traveling south at a speed of 68 mi/h from Dallas toward San Antonio. Dallas is about 272 miles north of San Antonio. A truck is traveling north from San Antonio to Dallas at a speed of 71 mi/h. When and where will they pass each other? 1. Create
  84. science

    how do jupiter's moons stay in orbit around jupiter They rotate around jupiter. If you rotate around an object you are accelerating toward it, even though the distance can stay the same. This so-called centripetal acceleration multiplied by the mass must
  85. physics ---- really dnt get this at all

    if friction is set to zero and on planet Earth. Now, if you attach a mass to the spring from its initial equilibrium position, it vibrates forever in simple harmonic motion. Why doesn't it come to rest after stretching by a distance 'd'; proportional to
  86. Physics

    Sue and Jenny kick a soccer ball at exactly the same time. Sue’s foot exerts a force of 49.9 N to the north. Jenny’s foot exerts a force of 119.7 N to the east. a) What is the magnitude of the resultant force on the ball? Answer in units of N b) What
  87. Math/117 University of Phoenix

    Could someone look over this paper before I turn it in? Thanks 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
  88. Calc

    An oil refinery is located on the north bank of a straight river that is 2 km wide. A pipeline is to be constructed from the refinery to storage tanks located on the south bank of the river 3 km east of the refinery. The cost of laying pipe is $300,000 per
  89. As Physics

    Please help and do it step by step all parts of questions and use: T = time(s) I=current (amps) Q=net charge on object (Coulombs) N=no electrons (and write if added or removed from object and how) E=elementary charge Two copper wires of diameter 1 mm and 2
  90. Physics

    please show me how to solve this 1. A bus travels 280 km south along a straight path with an average velocity of 88 km/h to the south. the bus stops for 24 min. then, it travels 210 km south with an average velocity of 75 km/h to the south a. how long does
  91. maths

    To fill a swimming pool two pipes are to be used.If the pipe of larger diameter I'd used for 4 hours and the pipe of smaller diameter for 9 hours only half the pool can be filled .Find ,how long it would take for each pipe to fill the tank separately, if
  92. geography

    where is the continental boundary between North and South America? Isthmus of Panama? Is this considered a continental boundary? Thanks
  93. Science/geology

    Why does the Red River flow north, and the Mississippi River flow south?? I think it has something to do with elevation.. but I'm not sure.
  94. Physics

    Sarah walks 300 m North ,50 m East and then she walks 300 m South. What is the displacement? Thanks in advance too!!
  95. Maths Mechanics

    A plane flies due north at 300km/h but a crosswind blows north-west at 40km/h. Find the resultant velocity of the plane. Once I have drawn I diagram it is often okay, but it is the initial steps that I struggle with.
  96. physics

    The driver of a 1024 kg truck traveling 32.6 m/s North on I-77 has to make a sudden stop. If it requires a distance of 57.1 m for the truck to stop, use conservation of energy to find the net force acting on the truck.
  97. physics

    The driver of a 1024 kg truck traveling 32.6 m/s North on I-77 has to make a sudden stop. If it requires a distance of 57.1 m for the truck to stop, use conservation of energy to find the net force acting on the truck.
  98. Chem

    I have look and read and I still cant figure the couple out can someone please help? Number of orbital’s in the 2p subshell? And Number of electrons in 3d subshell? Number of electrons in a 3p orbital? Subshell block begins to fill after 4s2? Number of
  99. Chem

    I have look and read and I still cant figure the couple out can someone please help? Number of orbital’s in the 2p subshell? And Number of electrons in 3d subshell? Number of electrons in a 3p orbital? Subshell block begins to fill after 4s2? Number of
  100. Math

    3.)Find the diameter of a circle with a circumference of 50 mm. Round your answer to the nearest tenth. A.)16.0 mm B.)26.4 mm C.)8.4 mm d.) 33.5 mm 4.)Find the area of the circle with the given radius or diameter. Round your answer to the nearest tenth.