1. 5th grade math

    Given 257 sec, 15,000 feet per second Find the acceleration due to earth's gravity.
  2. Physics

    Assuming the earth to be a uniform sphere of radius 6400 km and density 5.5g/c.c. find the value of g on the surface where G=6.67×10
  3. science

    find the theoreticval value of the period of a pendulum of length 0.9 meters located on the surface of the earth.
  4. Regents

    Where is the site of the Regents countdown for Earth Science? It has the days, hours, minutes, etc. and I can't find it. Please help. Thank you.
  5. Social Studies

    Can you check my answers? My answers are marked with this: (*) 1. What was the effect of World War I on South Carolina? A. The state economy shrunk significantly. *** B. Citizens used more resources, such as meat and fuel, than before the war. C. Factory
  6. Physics

    At t = 0, an automobile traveling north begins to make a turn. It follows one-quarter of the arc of a circle of radius 10.9 m until, at t = 1.56 s, it is traveling east. The car does not alter its speed during the turn. Find the car's speed. Find the
  7. physics

    At t = 0, an automobile traveling north begins to make a turn. It follows one-quarter of the arc of a circle of radius 10.1 m until, at t = 1.64 s, it is traveling east. The car does not alter its speed during the turn. (a) Find the car's speed. (b) Find
  8. physics

    At t = 0, an automobile traveling north begins to make a turn. It follows one-quarter of the arc of a circle of radius 9.3 m until, at t = 1.38 s, it is traveling east. The car does not alter its speed during the turn. (a) Find the car's speed. (b) Find
  9. physics

    At t = 0, an automobile traveling north begins to make a turn. It follows one-quarter of the arc of a circle of radius 9.3 m until, at t = 1.38 s, it is traveling east. The car does not alter its speed during the turn. (a) Find the car's speed. ___ m/s (b)
  10. Social

    how does restoring voting to whites in the south help protect rights of freedmen in the 1870s? freedmen by the way were the slaves. thx for ur help :) It would have caused a great deal of anger if freedmen could vote, but whites couldn't vote. This was a
  11. Algebra Word Problem

    During summer vacation, c children went to different destinations with their parents. 36% of the children went to Europe and 24 children to Asia. The rest of the children went to South America. How many children went to South America?
  12. Science pplzzz!!

    Which of the following is true about rocks? Rocks are composed of only one mineral. Rocks do not contain any nonmineral matter. Coal is not considered a true rock. Most rocks are a mixture of minerals. 2. If granite undergoes high temperatures and high
  13. chemistry

    Earth's population is about 6.5 billion. Suppose that every person on Earth participates in a process of counting identical particles at the rate of four particles per second. How many years would it take to count 8.10 x 10^23 particles? Assume that there
  14. chemistry

    Earth's population is about 6.5 billion. Suppose that every person on Earth participates in a process of counting identical particles at the rate of two particles per second. How many years would it take to count 6.0 x 10^23 particles? Assume that there
  15. chemistry

    Earth's population is about 6.5 billion. Suppose that every person on Earth participates in a process of counting identical particles at the rate of four particles per second. How many years would it take to count 8.10 x 10^23 particles? Assume that there
  16. physics

    The mass of the Earth is 5.98 × 1024 kg. A 6.83 kg bowling ball initially at rest is dropped from a height of 2.12 m. The acceleration of gravity is 9.8 m/s^2. What is the speed of the Earth coming up to meet the ball just before the ball hits the ground?
  17. chemistry

    Earth's population is about 6.5 billion. Suppose that every person on Earth participates in a process of counting identical particles at the rate of two particles per second. How many years would it take to count 6.0 x 10^23 particles? Assume that there
  18. alegebra

    A turtle starts moving north at 4 feet per minute from a point P. Five minutes later, a snail starts moving south at 2 feet per minute from a point 50 feet due east of P. What is the distance (in feet) between the two animals five minutes after the snail
  19. math

    A turtle starts moving north at 4 feet per minute from a point P. Five minutes later, a snail starts moving south at 2 feet per minute from a point 50 feet due east of P. What is the distance (in feet) between the two animals five minutes after the snail
  20. social studies

    What where the people in north africa like, what was their surroundings like Since this is not my area of expertise, I searched Google under the key words "North Africa people" to get these possible sources: http://www.africaguide.com/culture/index.htm
  21. physics

    i don't get this question: rubber rods and fur define negative charges. explain this statement. what is this question asking about??? can any plz tell me./?THX ALOT The charge left on the rubber when rubbed with fur, was defined originally as "negative".
  22. Science

    Compare the nature greenhouse effect process with the human induced. 2. What are the greenhouse gases? Which one is the biggest concern? 3. What are scientists doing to collect data? 4. What role does the carbon cycle play in this problem? 5. What are the
  23. geology

    1. What fraction of the Earth is made up of each of the major compositional layers: core, mantle, and crust? 2. What cities lie the same distance from our town as the boundaries of the following layers in the Earth lie from the solid surface? a. Base of
  24. physics

    The solar wind is a thin, hot gas given off by the sun. Charged particles in this gas enter the magnetic field of the earth and can experience a magnetic force. Suppose a charged particle traveling with a speed of 9.80 x 10^6 m/s encounters the earth's
  25. History

    Can someone please check these? I would greatly appreciate it. Thanks! 1. What was the purpose of the Freedmen's Bureau? a. to free the slaves b. to feed, clothe, and educate former slaves*** c. to move former slaves to the Northern states d. to ensure
  26. Physics

    A drone capable of flying north at a speed of 4.0 m/s in still air is attempting to fly across a field 120 m wide. There is a wind blowing at 5.0 m/s [E]. a) Find the drone's velocity relative to the ground. b) Find the time it takes the drone to cross the
  27. SCIENCE

    How would you find latitude and longitude without using a globe or the internet? Please help If you are plotting long distances are varying courses, the best you could do is plot these on a Equidistant Projection, and the usual of these is the Miller
  28. science

    5. Suppose a skydiver (mass = 75 kg) is falling toward the Earth. When the skydiver is 100 m above the Earth he is moving at 60 m/s. At this point calculate the skydiver’s…….
  29. Physics

    At 6400 km above the earth’s surface, an object weighing 71 N on the surface would weigh only 18 N. Acceleration due to gravity will be about ¼ that on the surface of the earth.
  30. Science

    suppose a skydiver (mass = 75 kg) is falling toward the earth. when the skydiver is 100 m above the earth he is moving at 60 m/s. at this point calculate the skydiver's
  31. Physics

    Gravity on the surface of the moon is only 1/6 as strong as gravity on the Earth. What is the weight of a 24 kg object on the Earth? The acceleration of gravity is 10m/s2 .
  32. physics

    (1) A helium atom consists of two protons (charge +2e) and two electrons (charge -2e) that are an average of 4.3 x 10^-11 m apart. Find the electrical force between them. Find the gravitational force between them. What is the ratio of gravitational to
  33. Science

    london england is approximately 51° north latitude 0° longitude. binghamton new york is about 42° north latitude 76° west longitude why does binghamton have colder winters?
  34. Phys.

    A 6 mC charge experiences a force of 6 N directed north. What is the electric field (magnitude and direction) at the location of the charge? Would the direction still be north? And the magnitude 1000?
  35. science

    how is the air we breath today different from 3.6 billion years ago? http://en.wikipedia.org/wiki/Earth's_atmosphere#Evolution_of_the_Earth.27s_atmosphere http://eesc.columbia.edu/courses/ees/climate/lectures/earth.html
  36. physics

    Compute the orbital radius of an earth satellite that has an equatorial orbit and always remains above a fixed point P on the earth's surface. Communication satellites have such "geosynchronous" orbits (see figure). These satellites are used to relay radio
  37. Physics

    1. If a car's mass is 439 kg, what is the weight on earth? A. 4390 N B. 4350 N C. 4300 N D. 4360 N 2. If a person weighs 717 N on earth and 5320 N on the surface of a nearby planet, what is the acceleration due to gravity on that planet? A. 83.6 m/s^2 B.
  38. Science

    A hurricane becomes more powerful be evaporating water from? lakes mountains oceans*** rivers 1. Over time, scientists have changed their model of our solar system. It has transitioned from A) a sun-centered to an moon-centered model. B) a sun-centered to
  39. physics

    need help with this physics questions a jogger runs with a velocity of 6km/h 25 degrees north west for 35 minutes and then changes direction , jogging for 20 minutes at 4.5km/h 65 degrees east of north. using a vector diagram determine the joggers total
  40. Pre calc

    A boat is going 30 mph. It's direction is 100 degrees east of north. The water current is 15 mph and has a direction of 22 degrees east of north. Find the magnitude, and direction of boat.( with water current)
  41. computers? I think just a question.

    what are some process used in different organizations to download and imput paper information into computerized systems so other can analyze? would this be like excel programs charts graphs etc.? 1. Manual retyping the paper information to a text file 2.
  42. US history

    When Kennedy was elected president, many were: A. pleased because of his clear experience. B. fearful because he had appointed such controversial people to the cabinet. C. pleased because of sound cabinet appointment and his ability to inspire. I think it
  43. Astronomy

    Choose one answer for each question How old is the universe? 6,000 years old 380,000 years old 13.8 billion years old 13.8 million years old A parsec is: Longer than a light year The distance between the Earth and the Sun Approximately 3x10^24 cm None of
  44. physics

    An earth satellite moves in a circular orbit with an orbital speed of 6200m/s. a) find the time of one revolution. b) find the radial acceleration of the satellite in its orbit.
  45. Experimental Design

    I'm doing research on reasons for the canceling of soap operas. I cant seem to find any information as to WHY they cancelled south of nowhere. Many sites say that it is just ending, but I need help finding what caused it to end. can someone help me on this
  46. Chem- bobpursley

    What mass of protons would be required to just neutralize the charge of 1.5 g of electrons? my teacher said .0015kg times 1e-/.00091e-27kg times 1pt/1e- times 1.67262e-27 over 1 p chem - bobpursley, Tuesday, September 21, 2010 at 6:48pm That is what I
  47. 11th grade Biology

    I have three questions that I can't find anywhere. 19) Organisms that are at the greatest risk when the dynamic equilibrium is upset would be the: A. Organisms at the top of the evolutionary tree B. Generalists C. Specialists D. Invertebrates E. All of the
  48. Social Studies help

    Describe the military strategy that General William T. Sherman used across Georgia and South Carolina. Explain how the strategy affected the South, as well as how Southerners reacted. Describe at least two challenges freedmen faced immediately after the
  49. U.S.History

    for my question: which were advantags the South had in the Civil War Ms Sue said its either a. larger army or d. more experienced generals. this is what my book says: Seven of the nation's eight military colleges were in the South, a majority of the
  50. Science

    Describe how the movement of Earth is responsible for day and night. The movement of earth is responsible for day and night because as it rotates counterclockwise we tend to have this result. The part of earth that faces the sun experiences daylight, and
  51. Polarity and electronegativity (science)

    Describe the concept of polarity. How is polrity related to electronegativity? ~Well I think that polarity is how I remember it.."pull" basically due to the tendency for electronegative atoms in a molecule to attract the other electrons in the other atoms
  52. Physics

    Find analytically the sum or resultant of the following displacements: A= 10m Northwest , B= 20m 30 degree north of east and C = 35m due Souh
  53. colonial america

    WHAT WERE THE FIRST TWO SETTLEMENTS IN NORTH AMERICA? http://www.historyplace.com/unitedstates/revolution/rev-early.htm First = 1565 Scroll down to find others. =)
  54. riddles

    is any one good at riddles? here is the clue for the treasure. a pointy thing to the north and east. And a drink that will get you high beyond.An education will help you find it.But it's still no magic wand.
  55. math

    I am not understanding this question. the retail sales tax in north Carolina is 7%. Find the total cost of a $1210 of sofa. It is hard for me to get this answer.
  56. Grammar and composition

    on page 807, Exercise B it wants me to amswer the questions and name the reference book I used to find the answer. Question 10 is "What is the number of Buddhists in North America?
  57. Science

    Hello where can i find the answer to this question? For a resident on the equator, during what period of the year (month(s)) is the noon sun shining into a north-facing window?
  58. physics

    A student wanted to drive from Austin to san Antonio ,80 mi south of Austin on highway I35. Unfortunately he entered in the wrong direction and drove to waco-100 miles north of Austin –before he noticed his error. In waco ,he turned around,drove back to
  59. Geography

    I need help with this: "This is a nation in South Asia. One of South Asia's three major rivers is in this country. The country has two climate regions, arid and semi-arid and the dominant religion in this country is Islam." Which country could it be?
  60. S.S

    5. The Underground Railroad used escape routes that went throughout the South. Based on that fact, which of the following conclusions could be made? (1 point) A. The Southern states were leaning toward emancipation of the slaves. B. Slaves were hopeful to
  61. WRITEACHER

    In South Africa the baboons not only annoy farmers by raiding cornfields but also chicken coops. Rewritten: In South Africa the baboons not only annoy farmers by raiding cornfields but also annoy chicken coops. Hmmm! "In South Africa, the baboons annoy
  62. history please help

    1. Select a new deal program that helped improve the lives of south Carolinians. Explain what the program improved and how it helped the people of South Carolina 2. Explain how rationing affected the people on the home front during world war II. how did
  63. trig

    A ship sails 40 miles SOUTH and 15 miles EAST. Find the bearing from where it began? HELP.
  64. Math

    A walks 2Km south to B, she the walks 3km west to C. Find the distance and bearing from C and A
  65. chemistry

    Which element has atoms that can form single, double, and triple covalent bonds with atoms of the same element? the choices are florine, oxygen,carbon and hydrogen. i also need a explanation of why its the right answer. thanks for helping :) How do we see
  66. physics

    A simple Geiger counter is constructed out of a setup similar to what we just used in problem 5. A thin wire with a linear charge density _ is held in the center of a cylindrical tube, which is filled with an inert gas. When a high speed 2 particle coming
  67. history

    The term Bourbon A.celebrated the French origin of many of the New South leaders B.derived from the French Bourbons who, according to Napoleon, forgot nothing and learned nothing through the ordeal of the French Revolution C.reflected the fact that some
  68. physics

    In 5.20 h, a balloon drifts 6.5 km north, 2.00 km east, and 2.76 km in upward elevation from its release point on the ground. (a) Find the magnitude of its average velocity. . km/h (b) Find the angle its average velocity makes with the horizontal. . °
  69. Physics

    An airplane flies at airspeed (relative to the air) of 470 km/h . The pilot wishes to fly due North (relative to the ground) but there is a 64 km/h wind blowing Southwest (direction 225◦). In what direction should the pilot head the plane (measured
  70. Math please help

    At 8am Lanah heads out for her morning jog going north. Ten minutes later, Jasmine heads our for her jog, also going north. ( assume they both started at the same spot). Lanaahs joggins speed is 25 ft/ minute more than jasmines . At 8:30 am,Lannah is
  71. Physics

    An airplane flies at airspeed (relative to the air) of 430 km/h . The pilot wishes to fly due North (relative to the ground) but there is a 43 km/h wind blowing Southwest (direction 225◦). In what direction should the pilot head the plane (measured
  72. math - integers

    1. Freddy lives 34kms south of Makati City while Misael lives 34kms north of Makati City. How far is Freddy's place from Misael's place?
  73. Electric Fields

    In a particular region of Earth's atmosphere, the electric field above Earth's surface has been measured to be 151 N/C downward at an altitude of 280 m and 167 N/C downward at an altitude of 430 m. Calculate the volume charge density of the atmosphere,
  74. PHYSICS

    In a particular region of Earth's atmosphere, the electric field above Earth's surface has been measured to be 151 N/C downward at an altitude of 280 m and 167 N/C downward at an altitude of 430 m. Calculate the volume charge density of the atmosphere,
  75. Physics

    In a particular region of Earth's atmosphere, the electric field above Earth's surface has been measured to be 151 N/C downward at an altitude of 280 m and 167 N/C downward at an altitude of 430 m. Calculate the volume charge density of the atmosphere,
  76. Physics

    A 2.1kg brass ball is transported to the Moon. a)What is the mass of the brass ball on the earth and on the moon? Wouldn't it be 2.1kg for the earth as well as for the moon? b)Determing the weight of thee brass ball on the earth. F_g=(G*m_ball*m_earth)/r^2
  77. science help pls pls

    A star is observed from two positions of Earth in its orbit, in summer and winter. Which of these is the best method to calculate the approximate distance of the star from Earth? measure the parallax and use it in calculations measure the red shift of
  78. CHEM

    I just have one more question regarding electron configurations for the following ions: Mo^3+ V^3+ I cannot understand why my answers are not working. Not listing as ground-state configs, but as full e- configs: shouldn't Mo^3+ be: 1s2, 2s2, 2p6, 3s2, 3p6,
  79. social studies

    I need to know some resources that are in the countries of the south. Please LIST the resources. DON'T give me any sites. I need help, I tried to find some, but I couldn.t Please help me. THANKS!:):):):):):):):):):):):)
  80. Maths, Biology, Business Economics

    Hi I want to study Psychotherapy and be a Dance therapist but cannot find any courses for Dance Therapy in South Africa.
  81. physics

    a bird flies 3km west and then 4km south. find the resultant displacement of the bird
  82. Grammar-Capitalization

    What should be capitalized? she was in the south helping rebuild grace community center when a man cut his hand with a saw and she helped him stem the bleeding. Answer: She was in the South helping rebuild Grace Community Center when a man cut his hand
  83. History

    2.)In what way did Abraham Lincoln's election further divide the country prior to the Civil War? Lincoln immediately freed the slaves after his election. Lincoln was considered by many to be an abolitionist. Lincoln made it clear he would attack the South
  84. algebra 2

    A car enters an interstate highway 15 mi north of a city.The car travels due north at an average speed of 62.5 mi/h.Write an equation to model the car’s distance d from the city after traveling for h hours. Graph the equation
  85. History

    Which best describes the role of mercantilism during the 1600s? european countries wanted to expand their wealth by exporting raw materials from colonies european colonies in the south America grew wealthy by seizing gold from native tribes european
  86. Physics Number 3 (Online w/ no teacher)

    Many people mistakenly believe that the astronauts that orbit the Earth are “above gravity.” Calculate g for space-shuttle territory, 200 kilometers above the Earth’s surface. Earths’ mass is 6 X 10 to the 24th and its radius is 6.38 X 10 to the
  87. Physics HELP Plz

    On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball. The acceleration due to gravity on the moon is 1/6 of its value on the earth (gravity on moon -1.633m/s2). On earth, golf balls are driven at about 84 m/s with a loft angle of
  88. Physics - Am I correct?

    I'm preparing for a test. Can anyone check my answer for all these questions? These are my questions: 1. A stationary curling stone is struck in a glancing collision by a second curling stone of equal mass. If the first stone moves away at a velocity of
  89. Physics

    A pilot flies out of Cleveland and sets his compass due North. He maintains an airspeed of 250 km/hr. After 30 minutes he finds that the plane is 200 km north and 40 km west of the starting point. What is the velocity of the wind? I've made my triangle and
  90. Science/Math

    Word Problems pages 18-19 A sailboat heads north at 3 m/s for 1 hour and then tracks back to the southeast (at 45 degrees to north) at 2 m/s for 45 minutes. a. How far has the boat sailed? b. How far is it from its starting location? The textbook that
  91. chemistry

    Which statement correctly describes an atom of the element helium? A. An atom of helium has its valence electrons in it's first energy level. B. An atom of helium most similarly behaves like an atom of hydrogen since it is in the same period. C. An atom of
  92. History...Please check my answers.

    Hi. Could someone please check my answers? I appreciate it so much! :) 1. Which statement best explains why women's-rights activists were dissatisfied with the Fifteenth Amendment? A. They wanted the amendment to guarantee equal civil rights as well as
  93. social studies

    what are the advances of early culture groups in north america This question is FAR too broad. There were many, many groups of people (and therefore civilizations) that developed in what we now call North America. You'll need to decide on one or two groups
  94. Physics - Aristotle and his theory

    Aristotle beleived that wood was a combination of fire, water, and earth. Use his 4 element theory to explain why a wooden boat floats on water. His theory is hard for me to understand. The only thing I know is that the boat floats on the water because the
  95. physics

    A satellite is placed in orbit 100 km above the surface of the earth (radius = 6370 km, mass = 5.98 x 1024 kg). What is the value of the acceleration of gravity at that altitude as a percentage of the acceleration at the surface of the earth?
  96. chemistry

    On average, earth's crust contains about 8.1% aluminum by mass. If a standard 12-ounce soft drink can contains approximately 15.0g of aluminum, how many cans could be made from one ton of the Earth's crust?
  97. Physics

    An asteroid revolves around the Sun with a mean orbital radius twice that of Earth's. Predict the period of the asteroid in Earth years. (6.38*10^6 radius) I don't understand how to solve this problem.
  98. Physics

    Calculate the speed of a satellite moving in a circular orbit about the Earth at a height of 2700×103 m. The mass of the Earth is 5.98×1024 kg and the mass of the satellite is 1400 kg.
  99. Math

    The circumference of earth is about 40,030.02km. The formula for circumference is c=2(3.14)r.jennifer determines the radius of earth is about 12,700km.use estimation to determine if Jennifer measurement is reasonable.
  100. physics

    a geosynchronous satellite orbits at a distance from earth's center of about 6.6 earth radii and takes 24 h to go around once. what distance in meters does the satellite travel in one day? what is its orbital velocity in m /s?