1. Geography

    During the formation earth , from where does the water came ?
  2. Geography

    What happens when we move vertically upwards from the earth?
  3. Science

    Why is the weight of an object less on the moon than on Earth?
  4. earth science

    products that conserves resources portfolio
  5. science

    Why are the oldest rocks on earth on continental crusts?
  6. science

    How do the Sun, Earth, and Moon depend on each other?
  7. science

    How does radiation from the Sun affect Earth’s atmosphere?
  8. Geography

    What happens when we move vertically upwards from the earth?
  9. Geography

    What will happen when we move vertically upwards the earth?
  10. science

    differences between rotation and revolution of the earth
  11. physics (Newton's law of gravitation)

    Can anyone please help me with this question? I am really confused. A neutron star and a black hole are 2.400e+12 m from each other at a certain point in their orbit. The neutron star has a mass of 2.78×1030 kg and the black hole has a mass of 9.94×1030 kg. What is the ...
  12. math, graphs

    the number of counselors must be 1/4 of the number of campers. write a rule for the number of counselors that must be at camp. wrote ordered pairs for the number of counselors when there are 76, 100, 120, and 168 campers.
  13. math

    can someone show me how to solve this problem. It determines that in order to sell x smartphones, the price per product must be p=280-0.4x. It also determine that the total cost of producing x smartphones is given by C(x)=5000+0.6x. a. Find the total revenue, R(x). b. Find the...
  14. Macroeconomics

    Which of the following are examples of debt overhang? Which examples are likely to lead to a cutback in spending? Explain. a. Your uncle starts a restaurants, borrowing to fund his investment. The restaurant fails, and your uncle must shut down but still must pay his debt. b. ...
  15. Geology

    Can someone please look this over and let me know if I described the Plate Tectonic Theory? Thanks. Write a 200-300-word summary about two historical figures and the process of mantle convection and plate movement. Two historical figures that contributed to the plate tectonic ...
  16. oceanography

    1. How much of the total water at earth's surface is fresh water? 2. Of all the freshwater at the earth's surface, what percent is found as ice and glaciers? 3. What percent of all freshwater is groundwater? 4. What percent of the rainfall that falls on continents is returned ...
  17. Maths

    please help me answer this question: A pilot sets to fly from B to A and wishes to set a course to offset a 32 km/h easterly wind.The aircraft can fly at the speed of 800km/h in still air. A is 256 from B in a bearing of 330 degrees. a)on what course must the aircraft be set? ...
  18. Data management

    1) In how many ways can 12 distinct objects be separated into three equal piles? 2) In how many ways can 25 students be assigned to 4 distinguishable study groups if at least 6 students must be in each group? 3) in how many ways can 4 students be assigned to 9 class periods if...
  19. English help

    A music conductor is one who ________. To lead one in is to ________, and abduct is to ________. Chrono means "time" so to "synchronize" means to __________. Since phon means sound, symphony must be _______. If thesis means "idea", then synthesis must mean ______.
  20. Physics

    A place kicker must kick a football from a point 31.2 m from a goal. As a result of the kick, the ball must clear the crossbar, which is 3.05 m high. When kicked the ball leaves the ground with a speed of 21.3 m/s at an angle of 53° to the horizontal. By how much does the ...
  21. Physics

    A place kicker must kick a football from a point 31.2 m from a goal. As a result of the kick, the ball must clear the crossbar, which is 3.05 m high. When kicked the ball leaves the ground with a speed of 21.3 m/s at an angle of 53° to the horizontal. By how much does the ...
  22. Statistics

    Which of the following is not true about histograms? A) The bars must touch each other. B) A histogram may be symmetric or skewed depending on the selection of bin width. C) Each bin must have the same width. D) Histograms may represent categorical data. E) Histograms may have...
  23. biology

    The (**) are my answers Which of the following is not a characteristic of life? (1 point) maintains homeostasis *** composed of cells composed of atoms carries out metabolism 2. Which of the following must be true to consider something to be alive? (1 point) It must be able to...
  24. Maths

    A particle rotates in a circular orbit about a point located 30cm away, with angular speed 2 rad s^-1. If the angular momentum is 0.2 Js, determine the mass of the particle. I used L=mr^2 omega and got 1.11kg A constant torque of 0.2Nm accelerates the particle for 5s. ...
  25. Math

    Find the discriminant for the quadratic equation f(x) = 5x^2 - 2x + 7 and describe the nature of the roots. discriminant is 144, one real root discriminant is -136, two complex roots <--? discriminant is -136, one complex root discriminant is 144, two real roots If a ...
  26. math

    You have exactly $100 to spend. You must get 100 animals. The chicks cost $0.50 each. The pigs cost $2.00 each. The sheep cost $5.00 each you must get some of each animals. How many of each animals can you get.
  27. College

    Three(3) digit numbers can be formed from the digits 0,1,3,5,7 and 8. How many numbers can be formed without repeats. (A) if the 3 digits numbers must be divisible by 5. (b) if the 3 digits number must be a multiple of 2
  28. 10th grade Literature

    Ok, I have to answer questions on these 2 poems, and I can't figure them out... The Golf Links Lie So Near The Mill by Sarah N. Cleghorn The golf links lie so near the mill That almost every day The working children can look out And see the men at play. And the 2nd... Earth by...
  29. spelling

    what is the answer to this analogy brother:mother::fly:???? must start with the letters scr,spr,str,or thr brother:mother:fly brother:mother::fly:???? must end with scr, spr, str, thr brother:mother::fly:???? must end with scr, spr, str, thr i don't know i need help with that ...
  30. finance (assumptions)

    The cost of capital for common stock is ke=(d1/Po)+g. What are the assumptions of the model? A. growth (g) is constant to infinity B. The price earnings ration stay the same C. The firm must pay a dividend to use this model D All of the above are assumptions of the model I ...
  31. Effective Business Communication

    For effective, written business communication, writers must consider several factors: the purpose of the communication, the identity of the audience members (including their probable reactions, amount of information they already have, obstacles that must be overcome, and ...
  32. Socials

    What effect did the highland clearances and the Irish potato famine have on canada? Do ayou know anyone of Irish or Scottish ancestry? How and when did their family come ot canada? Pretend you are a scottish or Irish farmer who must immigrate. Write a short speech to your ...
  33. Physics

    To win the game, a place kicker must kick a football from a point 40 m (43.744 yd) from the goal, and the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 23 m/s at an angle of 30.9◦ from the horizontal. The ...
  34. physics

    At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 0.20%? At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 2.0%? At what height above Earth's surface is the ...
  35. physics

    A mass of 0.116 kg hangs from a vertical spring in the lab room. You pull down on the mass and throw it vertically downward. The speed of the mass just after leaving your hand is 5.60 m/s. (a) While the mass moves downward a distance of 0.04 m, how much work was done on the ...
  36. Physics

    A 0.28-kg stone is held 1.5 m above the top edge of a water well and then dropped into it. The well has a depth of 4.8 m. (a) Taking y = 0 at the top edge of the well, what is the gravitational potential energy of the stone–Earth system before the stone is released? J (b) ...
  37. Physics

    A 0.31-kg stone is held 1.2 m above the top edge of a water well and then dropped into it. The well has a depth of 5.6 m. (a) Taking y = 0 at the top edge of the well, what is the gravitational potential energy of the stone–Earth system before the stone is released? (b) ...
  38. Physics

    A hydrogen atom is in its third excited state (n=4). Using Bohr theory of the atom calculate (a) the radius of the orbit, (b) the linear momentum of the electron, (c) the angular momentum of the electron (d) the kinetic energy (e) the potential energy, and (f) the total energy...
  39. FRENCH!

    Please help fix my sentences. Please keep in mind my past, present, and future tenses. You've been a great help Sra.Mme. 1.) This week, I went to my cousins house. 2.) We had a community gathering. 3.) I met so many new people. 4.) The gathering is fun. 5.) Tomorrow, I will go...
  40. physics (please help)

    An instrument-carrying projectile of mass m1 accidentally explodes at the top of its trajectory. The horizontal distance between launch point and the explosion is xm. The projectile breaks into two pieces which fly apart horizontally. The larger piece, m3, has three times the ...
  41. physics(elena)

    An instrument-carrying projectile of mass m1 accidentally explodes at the top of its trajectory. The horizontal distance between launch point and the explosion is xm. The projectile breaks into two pieces which fly apart horizontally. The larger piece, m3, has three times the ...
  42. Physics

    Two main strategies are employed to deflect an asteroid: destruction or slowing it down by at least 425 s so that the earth can move out of the impact zone. Assume perfect inelastic collision. (a) If we know the speed of the asteroid (va), mass (ma), and the distance the ...
  43. physic

    Charge must be present at a location in order for there to be electrical potential energy. Must charge also be present at a location for there to be electric potential? I know it's no but why?
  44. math

    If 72 divides m, what other numbers must divide m? If 55 divides m, what other numbers must divide m? (Enter your answers as a comma-separated list.)
  45. Physics

    A place kicker must kick a football from a point 29.0 m (= 31.7 yd) from the goal, and the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 17.8 m/s at an angle of 41.0o to the horizontal. By how much does the ball ...
  46. math

    length of a piece of wood must measure between 15 and 17 centimeters and the width must measure between 9 and 11 centimeters. write a system of linear inequalities to represent the possible dimensions of the wood,in inches,given that 1 inch equals 2.54 centimeters. plz do help...
  47. algebra

    what are rational expressions? Why must we always be mindful of the final value of the denominator in a rational expression? For example, consider the rational expression 3x/(x2 – 16). What values in the denominator must we be mindful of? Explain why.
  48. English

    1. The ice must be 15 centimeters thick at least. 2. The ice must be at least 15 centimeters tall. (What is is the proper position of 'at least'? Are both OK? Do both sentences have the same meaning?)
  49. science

    What is the geologic time scale and what are some thing scientists use it for (at least two things)? Here's my answer could you please verify. the geologic time scale is a record of the geologic events and life forms in Earth’s history. Scientists use it to understand the ...
  50. Physics

    Your dog has been diagnosed with a terminal illness for which there is no cure. The Veterinarian expects that it will live for 1 year before it succumbs to the condition. You have the idea that if you could keep the dog alive a little longer, a cure might be found. You decide ...
  51. Physic please help!

    The electrons in the beam of a television tube have a kinetic energy of 2.10 10-15 J. Initially, the electrons move horizontally from west to east. The vertical component of the earth's magnetic field points down, toward the surface of the earth, and has a magnitude of 5.00 10...
  52. Statistics

    The Tyco Video Game Corporation finds that it is losing income because of slugs used in its video games. The machines must be adjusted to accept coins only if they fall within set limits. In order to set those limits, the mean wight of quarters in circulation must be estimated...
  53. English

    I forgot to include the following sentences. I hope you can have a look at them, too. 1)The British upper class still thought of itself as the centre of the civilized world. World War I put an abrupt end to all this. 2) In June 1914 the heir to the Austrian throne, the ...
  54. Chemistry

    To resolve an object in an electron microscope, the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein molecule that is 2.10 nm in diameter? Take the mass of an electron to be 9.11...
  55. physics

    Air at 1 atm is inside a cylinder 17.9 cm in radius and 17.9 cm in length that sits on a table. The top of the cylinder is sealed with a movable piston. A 24.1-kg block is dropped onto the piston. a) From what height above the piston must the block be dropped to compress the ...
  56. PROJECT

    The project i have to do is for art. Well basically i need to think of a yellow page advertisement design. As with all advertising, the ads must be clearly present all important information about the business. the as must have: the name company the type of service or product I...
  57. social studies

    1) What is one certain long-term cost of adding to the national debt? a. american's in the future must have fewer public services b. american's in the future with not vote in elections c. american's in the future will not enjoy the benefits of the program d. american's in the ...
  58. Algebra 1 Please bobpursley

    This is what the exact paper says Algebra 1 PAP Creature teacher Obj: TLW creat a creature to represent a varable to be used to simplify an expression. Each student must will be assigned a variable ( mine being C): the student is to create a creature to represent that variable...
  59. CHEMISTRY

    to resolve an object in an electron microscope the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein molecule that is 7.90 nm in diameter? Take the mass of an electron to be 9.11*...
  60. math

    a farmer plant seeds in a field that is 125 meters length and 75 meters width. The seed must receive 1 liter per square meter every day and how many liters must farmer apply to the field every day?
  61. Science

    I am doing a 3rd grade science project on the Sun. I have to create a "visual". I want to compare the size of the earth to the size of the sun. I found that you could put 1,000,000 earths inside the Sun. I would like to fill a container [representing the Sun] with something ...
  62. chemistry

    To resolve an object in an electron microscope, the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein molecule that is 8.10 nm in diameter? Take the mass of an electron to be 9.11...
  63. chemistry

    To resolve an object in an electron microscope, the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein molecule that is 8.10 nm in diameter? Take the mass of an electron to be 9.11...
  64. Chemistry

    To resolve an object in an electron microscope, the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein molecule that is 5.40 nm in diameter? Take the mass of an electron to be 9.11...
  65. chemistry

    To resolve an object in an electron microscope, the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein molecule that is 4.70 nm in diameter? Take the mass of an electron to be 9.11...
  66. chemistry

    To resolve an object in an electron microscope, the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein molecule that is 7.00 nm in diameter? Take the mass of an electron to be 9.11...
  67. Physics

    You are conducting an experiment inside a train car that may move horizontally along rail tracks. A load is hung from the ceiling on a string. The load is not swinging, and the string is observed to make a constant angle of 45 degrees with the horizontal. No other forces are ...
  68. Physics

    You are conducting an experiment inside a train car that may move horizontally along rail tracks. A load is hung from the ceiling on a string. The load is not swinging, and the string is observed to make a constant angle of 45 degrees with the horizontal. No other forces are ...
  69. history (GB television)

    Hi, I am doing a project on when British television channels were launched, e.g. BBC1, BBC2, ITV1, Channel 4 and Channel 5 (then satellite channels). The kind of info I have found is BBC1 is oldest channel, BBB2 launched in 1964. Can anyone elaborate on when these programmes ...
  70. Environmental Science

    are these correct? 29. A common feature of thermal pollution and artificial eutrophication is that they both a. ave sources that are idfficult to identify and control b. cause large mats of algae to bloom in fresh water c. are a result of power plants and other industrial ...
  71. Assistance Dogs

    Please check my answer thanks:) After a dog learns to perform a specific task, the task must then be generalized to various locations. The task must then be _______, so that the dog is able to perform the response despite any distractions such as crowds, noises, or moving ...
  72. Pre-Ap Physics

    To win the game, a place kicker must kick a football from a point 17 m (18.5912 yd) from the goal, and the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 15 m/s at an angle of 58.9 ◦ from the horizontal. The ...
  73. Pre-Ap Physics

    To win the game, a place kicker must kick a football from a point 17 m (18.5912 yd) from the goal, and the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 15 m/s at an angle of 58.9◦ from the horizontal. The ...
  74. Pre-Ap Physics

    To win the game, a place kicker must kick a football from a point 17 m (18.5912 yd) from the goal, and the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 15 m/s at an angle of 58.9 ◦ from the horizontal. The ...
  75. Parents, Finances, and School-Age Children

    The most important reason for caregivers to be able to work together as a team is that A. caregivers must show a good working relationship to licensing agencies. B. caregivers must often coordinate and share responsibilities and resources. C. children need multiple caregivers...
  76. Social Studies

    I have this assignment for ss that is due on monday. Here it is (the assignment paper) LETTER TO QUEEN ISABELLA In 1492, Queen Isabella of Spain provided an Italian explorer and navigator, Christopher Columbus with 3 small ships the Nine, The Pinta, and the Santa Maria. She ...
  77. physics

    1.If a block weighs 30 pounds and has a static friction of .7 and a sliding friction of .55 and Fn=Fw a. How much force must be applied to just cause motion? b. Once motion has begun what force must be maintained to cause constant velocity motion? 2.A plank is tilted slowly to...
  78. Physics Classical Mechanics

    An instrument-carrying projectile of mass m1 accidentally explodes at the top of its trajectory. The horizontal distance between launch point and the explosion is xm. The projectile breaks into two pieces which fly apart horizontally. The larger piece, m3, has three times the ...
  79. physics 204

    1.If a block weighs 30 pounds and has a static friction of .7 and a sliding friction of .55. a. How much force must be applied to just cause motion? b. Once motion has begun what force must be maintained to cause constant velocity motion? 2.A plank is tilted slowly to an angle...
  80. 8th grade science

    For my quiz some of these questions confuse me. Your genome is over 99% identical to every other human on earth. True False 3 points Save All living things on earth share certain identical sequences of bases on their genome. True False and... Question 8 3 points Save The bases...
  81. physics

    There is a 1500 mile race course. The max foward acceleration is 4 m/s squared and the max backward acceleration is 6 m/s squared. I start at 600m and must go to the 800m mark (I must travel 200m). What is an equation for the fastest time that I could get to 800m? What is the ...
  82. physic

    Superman must stop a 120km/h train in 150m to keep it from hitting a stalled car on the tracks.If the train's mass is 3.6x10^5kg,how much force must he exert?Compare to the weight of the train (give as%).How much force does the train exerts on Superman?
  83. physic

    Superman must stop a 120km/h train in 150m to keep it from hitting a stalled car on the tracks.If the train's mass is 3.6x10^5kg,how much force must he exert?Compare to the weight of the train (give as%).How much force does the train exerts on Superman?
  84. Statistics

    For a certain computer program a password must be exactly 5 characters long the first character must be a number 0-5, the second third and fourth character can either be one of the 26 letters or a number 0-9, the fifth character has to be exactly the same as the second ...
  85. physics II

    What is the magnitude of the earth's gravitational field at the location of the ISS?
  86. science

    what are some items on earth that look similar to the moon?
  87. social studies

    What are some of the forces that change earth's surface
  88. Social Studies

    What are the physical features of the earth's surface called?
  89. earth`s changing surface

    the process that changes what rock is made of
  90. Science

    How does the Sun's rays hitting the Earth affect the seasons?
  91. science

    Explain the main factors that affect the Earth’s temperature.
  92. SCIENCE

    HOW THE SEASONS CHANGE AS EARTH REVOLVES AROUND THE SUN
  93. earth science

    where does the energy that drives the rock cycle come from
  94. Earth science

    the youngest part of ocean floor is found
  95. Science

    Why does Earth exert a stronger gravitational force than the Moon?
  96. earth science

    The area where precipitation and storms occur is a ? syestem.
  97. science

    calculate the mass in kg of an object that weighs 1225 n on earth
  98. earth

    A word for ater that flows downhillafter it rains 6 letters
  99. Science

    How do Scientists know the Sun is 93 million miles from the Earth? (How do they measure it)
  100. Physical Science

    What individual stated first that the earth was flat?
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