1. physics

    Earthquakes are essentially sound waves travelling through the earth. They are called seismic waves. Because the earth is solid, it can support both longitudinal and transverse sismic waves, which travel at different speeds. The speed of longitudinal

    asked by Anonymous on November 21, 2008
  2. 10th grade English

    This is my history essay (well.. a speech) due in 5 days. Please correct any mistakes or awkward phrases ASAP. Thank You Good morning/afternoon Mr Bean and fellow classmates. Australia, as a country, has a short, yet explicit history since the arrival of

    asked by Andy on September 11, 2009
  3. History

    Which accurately describes why Bartolomeu Dias did not complete his journey to India? A. Dias’s food supply had run low, and the crew convinced him to return to Portugal. B. Dias’s ship crashed into the rocky shores of Madagascar, killing the entire

    asked by Rylee on November 29, 2017
  4. History

    Which accurately describes why Bartolomeu Dias did not complete his journey to India? A. Dias’s food supply had run low, and the crew convinced him to return to Portugal. B. Dias’s ship crashed into the rocky shores of Madagascar, killing the entire

    asked by Michael on November 22, 2017
  5. physics

    A communications satellite is in an orbit that is 3.1 multiplied by 107 m directly above the equator. Consider the moment when the satellite is located midway between Quito, Equador, and Belem, Brazil; two cities almost on the equator that are separated by

    asked by Anonymous on January 11, 2012
  6. PLEASE HELP ME!!!

    I have to do a 4 pg report on the mediterranean ineed to know the native plants. please don't give me a full report. i just want the name of the plants and a brief summary. Olive trees are in the warm parts. Some of the plants you see everywhere in most

    asked by Princess24 on November 15, 2006
  7. Chemistry

    1)) The following two half-cells are paired up in a voltaic cell. How will lowering the pH affect the E of the overall cell? ClO3-(aq) + H2O(l) + 2e- ==> ClO2-(aq) + 2OH-(aq) Eo= 0.35 V I2(S) + 2e-==> 2I-(aq) Eo = 0.54 V A)dE will increase B)dE will

    asked by Val on March 23, 2010
  8. chemistry

    1)) The following two half-cells are paired up in a voltaic cell. How will lowering the pH affect the E of the overall cell? ClO3-(aq) + H2O(l) + 2e- ==> ClO2-(aq) + 2OH-(aq) Eo= 0.35 V I2(S) + 2e-==> 2I-(aq) Eo = 0.54 V A)dE will increase B)dE will

    asked by Val on March 23, 2010
  9. Physics

    A man observes snow falling vertically when he is at rest, but when he runs through the falling snow at a speed of 4.70 m/s, it appears to be falling at an angle of 24.0° relative to the vertical. Find the speed of the snow relative to the earth.

    asked by De'Sember on February 6, 2011
  10. Intermediate Algebra

    Create a list of six questions on solving equations with absolute value symbols that I will try to research, address, discuss, and/or express? Example: Google Earth: The Google Earth image shows the western side of The Mall in Washington D.C. The distance

    asked by Roger on May 3, 2012
  11. History

    Which explain how outside factors influenced the conflict in Vietnam in the years after World War II? (Select all that apply.) A. A socialist student uprising in france in the late 1940s forced the french government to grant vietnam full independence and

    asked by Anonymous on August 18, 2018
  12. World History B

    Which explain how outside factors influenced the conflict in Vietnam in the years after World War II? (Select all that apply.) A) At the threat of an invasion from the Soviet Union, the non-Communist leader in South Vietnam resigned in favor of Communist

    asked by Jean on February 2, 2019
  13. History

    Which explain how outside factors influenced the conflict in Vietnam in the years after World War II? (Select all that apply.) A. A socialist student uprising in france in the late 1940s forced the french government to grant vietnam full independence and

    asked by Michael on June 5, 2018
  14. social studies

    1. Which of the following was the greatest short-term effect of Spanish colonization on American Indians? A. It sharply decreased their population.----- B. It opened them to European ideas. C. It gave them new crops to grow. D. It led to their

    asked by mikayla on August 29, 2018
  15. Physics- help please

    A beta particle (fast moving electron) is released by a nuclear decay and starts travelling at 1.5x10^6 m/s [NΘE] in the Earth's magnetic field which has a value of 3.0x10^-5 T. If the force experienced by the beta particle is 4.34x10^-18 N, determine the

    asked by Liz on July 10, 2014
  16. physics

    The actual speed of electrons drifting along in a common electric circuit is about the speed of which of the following?. A) sound.B) a fast-moving automobile.C) light.D) a slow-moving snail.

    asked by britches on April 14, 2012
  17. chemistry

    What does the fact that a blackbody can absorb light only in specific-sized "packets" say about light? A. It has no mass. B. It is composed of electrons. C. It is composed of atoms. D. It is quantized. I have no idea what the answer is

    asked by Morgan on December 11, 2014
  18. Chemistry

    Fill in the missing information in the following table of four neutral atoms Symbol- 37Cl number of protons- 36 46 number of neutrons- 42 number of electrons- 33 mass number- 77 106

    asked by Tiffany on January 25, 2012
  19. Chemistry

    If the hydrogen volume reads 8.35 mL, what number of moles does the represent at STP (1 atm and 0oC)? How many moles of electrons were added to the solution to create 8.35 mL of hydrogen gas?

    asked by Anonymous on April 22, 2013
  20. Chemistry

    In an atom whose core contains 16 neutrons possess a total electrical charge 1. What is the atomic number of the atom? 2.What is the number of nucleons(mass)? 3.How much electrons has in electronic mantle?

    asked by Ciara on November 23, 2010
  21. chemistry

    As electrons move from the higher to the lower energy level, they release energy and ________ occurs. excitation ground state emission quantum state

    asked by help me please on October 5, 2015
  22. physics

    The charge (in coulombs) on an object increases according to (q)=(2 coul)e^[0.05/sec)(t)], where t is in seconds. How many seconds is the object deficient 1.56x10^20 electrons (from neutral)? 0, 12.56, 21.94, 41.21, 28.0, 50.5, 65.90, 105.00, 874.00,

    asked by debbie on May 31, 2011
  23. Chemistry

    Redox Reactions Cl2 + Co 2--> Cl- + Co2+ species oxidized? species reduced? oxidizing agent? reducing agent? As the reaction proceeds, electrons are transferred from?

    asked by Jasonious on September 21, 2011
  24. Chem

    Give the number of unpaired electrons present in a ground-state atom of Tl. I got 5, which isn't right. ndicate which species in each pair has the higher ionization energy. Choose at least one answer. a. Between K and I, I b. Between K and I, K c. Between

    asked by Anonymous on November 9, 2012
  25. trigonometry

    A plane flies due south from an airport for 92 miles, and then turns and goes S63°W for 50 miles. How far is the plane from the airport (to the nearest tenth of a mile)? What direction is the plane from the airport (to the nearest tenth of a degree)?

    asked by Crystal on March 7, 2016
  26. math

    a boat starts at point a p travels 15 miles due north to point r then turns due east and travels 8 more miles to the dock at point t find the distance the boat would have traveled if it had gone directly from point p to point t

    asked by cathy on February 20, 2013
  27. Physics-Please check

    Posted by JulieAnne on Wednesday, January 5, 2011 at 5:15pm. Please check my two answers I was sitting in a park on a bench next to another person and I moved tow times the original distance between the two of us, the force of gravity between me and the

    asked by JulieAnne on January 5, 2011
  28. English

    “One day, as I scanned the sandy expanse of Northern Africa, I couldn’t find any of the familiar landmarks—colorful outcroppings of rocks in Chad, irrigated patches of the Sahara. Then I realized they were obscured by a huge dust storm, a cloud of

    asked by quick help needed on May 10, 2016
  29. English

    “One day, as I scanned the sandy expanse of Northern Africa, I couldn’t find any of the familiar landmarks—colorful outcroppings of rocks in Chad, irrigated patches of the Sahara. Then I realized they were obscured by a huge dust storm, a cloud of

    asked by quick help please on May 8, 2016
  30. Physics

    A car travels due east with a speed of 40.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth. The traces of the rain on the side windows of the car make an angle of 54.0° with the vertical. Find the velocity of the rain

    asked by Aly on September 29, 2015
  31. Astronomy

    The volume of a ball is given in terms of its radius by V=4π3R3. Use this to find the average density of Saturn, i.e. the mass per unit volume. Use Earth’s mass in kg from the Table of Constants to express your answer in kgm3. Note for comparison that

    asked by sam on December 23, 2012
  32. Q&A Check Please, geo 7th grade

    The Missouri River flows southward to the Gulf of California. FALSE a lower area of land generally surrounded by mountains BASIN Summer ocean currents come in from the north. FALSE THE COAST OF CALIFORNIA Most of Canada and Alaska have a subarctic climate.

    asked by rawr... im a dinosaur.... rawr on October 29, 2012
  33. Trigonometry

    Could someone please help me out with this? I've read my text book, but can't seem to figure it out. And could you please show me how to do them? The Earth travels in a circular orbit around the Sun at 29.79 km/sec. If the radius of the orbit is 1.496 x

    asked by Hannah on June 4, 2013
  34. what if.....

    What would happen if the earth's angle of inclination was 45 degrees instead of 23 degrees? It would cause it to become colder..... The change would be more complex than that. The poles would get more sunlight during various seasons, leading to greater

    asked by Loralei on October 13, 2006
  35. history

    While the United States referred to the conflict with Mexico as the Mexican War, Mexicans called the war the North American Invasion. What do these different names suggest about each country's perspective on the war? is it because president polk wanted

    asked by y912f on May 5, 2009
  36. Math

    I an taking the SAT this week and I am so screwed. I keep getting these types(and ratio and probability- tips?) of questions wrong on practices. I basically set up a chart for d(distance/amount of sth), v(speed/rate), and t(time) and try to fill it out. I

    asked by Bethany on June 3, 2015
  37. science

    how the earth rotates by itself? Momentum imparted to it million of years ago when the solar system formed. One theory involves glancing collision with a large asteroid millions of years ago that also broke off material that eventually developed into the

    asked by shourie on November 27, 2006
  38. physics

    an american bald eagle heads south at 3.2 m/s, but encounters a wind blowing from the east at.97 m/s by how many degrees will she be blown off course?

    asked by shaniqua on October 8, 2012
  39. social studies

    political cartoons in 1994 in south africa would most likely depict shackles being removed off a voter in order to express what

    asked by Anonymous on May 29, 2011
  40. Intro to Business

    Because of ____,it may be legal to bribe other businesses and governmen officials in some south american countries,while this practice is still illegal in the u.s

    asked by Malayah on November 25, 2016
  41. Physics

    An American bald eagle heads south at 5.5 m/s, but encounters a wind blowing from the east at 1.9 m/s. By how many degrees will she be blown o course?

    asked by Sam on October 8, 2012
  42. life orientation

    Six ways that the human rights violation influences individual,groups and the broader south African community

    asked by Anonymous on April 13, 2016
  43. math

    a girl walks 800 m on a bearing of 129 degrees.calculate how far east and south she is from her starting point.

    asked by joseph on May 16, 2016
  44. life orientation

    Ways in which human rights violations influences individuals;groups and the broader south African community

    asked by Tshepang on April 18, 2016
  45. Geography

    Although devoped in the south jazz music has its roots in _______ rhythmsms A. Caribbean B.African C. Asian D.European

    asked by Bro on February 1, 2019
  46. grammar

    which contain a helping verb. !) steel drums were invented in the caribean islands or 2)maracas are a south american instrument.i think 1.

    asked by alley on June 14, 2009
  47. life orientation

    Six ways that the human rights violations influences individuals,groups and the broader south african community

    asked by Anonymous on April 4, 2016
  48. SS

    What is the source of many of the political conflicts in south asia a. overpopulation b. taxation c. religious rivalry d. water resources C?

    asked by Kareemah on May 6, 2015
  49. life orientation

    Six ways that the human rights violation influences individual,groups and the broader south African community

    asked by Anonymous on April 13, 2016
  50. Life orientation

    Six ways that the human rights violation influences individual,groups and the broader south african community?

    asked by Anonymous on April 13, 2016
  51. Social Studies

    South Asia’s flood plains have attracted a great deal of people because of their _______________. rich soil?

    asked by brooke on May 15, 2015
  52. life orientation

    Six ways that the human rights violations influences individuals,groups and the broader south african community

    asked by monwana on April 24, 2016
  53. Science

    Six ways that the human rights violations influence individuals,groups and the broader south african community

    asked by Nompumelelo on May 2, 2016
  54. life orientation

    six ways that the human rights violation influence individual groups and the broader south Africa community

    asked by phillipine on April 23, 2016
  55. physics

    an american bald eagle heads south at 3.2 m/s, but encounters a wind blowing from the east at.97 m/s by how many degrees will she be blown off course?

    asked by shaniqua on October 8, 2012
  56. History

    The colony of georgia served as a military barrier between who? I think the answer is Spanish Florida and British South Carolina

    asked by Steve on October 3, 2013
  57. life oriantation

    Critically discuss six ways that the human rights violations influences the broader south africa community

    asked by Ndubo Nebuxoma on April 5, 2016
  58. Science

    Hurricane Isabel passed well to the south of Norfolk, and yet it caused extreme flooding and power outages throughout this region. Why?

    asked by jason on November 9, 2018
  59. SS

    Can Someone Help Me with this short answer question?! I would really appreciate it. Summarize the events that led to the ratification of south Carolina's constitution of 1868.

    asked by Makayla Caldwell on March 1, 2016
  60. Geography

    By the early 2000s which country was Taiwan's third largest trading partner?(China),(South Korea). ( U.S.),(Japan)

    asked by Blake on June 8, 2012
  61. Social studies

    Turkic invaders brought ________ into South Asia. A Islam B Christianity C Hinduism D Buddhist I believe the answer is C

    asked by yumii~chan on March 11, 2019
  62. english

    Chinua Achebe's Things Fall Apart as a defiance of eurocentric sociological and anthropological narration of South Africa

    asked by lydia on October 22, 2016
  63. world history

    In which country were apartheid laws created that prohibited interracial marriage and otherwise segregated the races? I say South Africa

    asked by tracy on January 22, 2012
  64. Trigonometry

    Three ships are situated as follows: A is 225 miles west of C while B, due south of C, bears S25*10'E from A. a. How far is B from A? b. How far is B from C? c. what is the bearing of A from B? PLEASE EXPLAIN

    asked by Roy on September 9, 2012
  65. us history

    Why does Lincoln sign the Emancipation Proclamation even though he said early on that he wasn't going to abolish slavery in the south? What fears could have kept him from signing it?

    asked by Wyeth on December 12, 2010
  66. Life orientation

    identify one environmental factor that causes ill health, accidents, crises and disasters in our communities in south africa

    asked by amukelani on May 26, 2011
  67. physics

    A person is kayaking in the ocean at 5.6 m/s 75° to the horizon when he experiences a current of 3.8 m/s 45° south of west. What is the speed and direction of his kayak?

    asked by John on October 26, 2014
  68. Sociology

    In the twentieth centruy, which country had a caste system based on race? a. India b. the USA c. South Africa d. a and b only e. b and c only

    asked by Bill on October 29, 2012
  69. life orientation

    what are the human and social factors that cause ill-health,sickness, truama, accidents and disasters in south africa

    asked by anonymous on May 7, 2011
  70. life orientation

    identify and describe one environmental problem that causes ill health,accidents,crises,and disasters within south africa

    asked by nelly on April 22, 2012
  71. American History

    what factors led to the failure of Republicans to secure rights for freedmen in the South in the years between 1865 and 1877

    asked by ray on August 26, 2011
  72. Acc

    Six ways that the human rights violations influences individual, groups and the border south African community

    asked by Mahosi Anani on April 20, 2016
  73. Life orientation

    What are the institutions/ community organisations that are involved in supporting or giving redress to teenage pregnancy in South Africa

    asked by Cindy on April 24, 2013
  74. geography

    how do you think the existance of nearly 3000 ethnic groups and 800 languages affects life in countries south of the sahara

    asked by chris on May 2, 2011
  75. L.O

    Identify one environmental or human factor that causes ill health, accidents or disasters within a community in South Africa

    asked by yatho on May 5, 2013
  76. life orientation

    in 10-15 lines critically discuss 5 ways in which floods have an promblem impacts on the human and environmental in south africa

    asked by diale lesego on April 13, 2013
  77. adult education

    political cartoons in 1994 in south africa would most likely depict shackles being removed off a voter in order to express what?

    asked by Anonymous on November 16, 2009
  78. Life orientation

    ways that human rights violation influences individuals, groups and broader south African community

    asked by Reneilwe on April 25, 2016
  79. adult education

    political cartoon in 1994 in South Africa would most likely depict shackles being removed off a voter in order to express

    asked by Anonymous on November 4, 2010
  80. life orientation

    Ways that the human rights violation influences individual,groups and broader south African community

    asked by violet on April 20, 2016
  81. chemistry

    I got E) for the first and couldn't figure out the other one. Can any one verify the first and help with the second?? In which of the following processes is there a decrease in the potential energy of the substances involved? A) a coil spring is compressed

    asked by jake on January 13, 2011
  82. Science Urgent Please help

    (I have no idea how to even approach this question. Can anyone please help me?) Some people have proposed that the earth could solve its population problem by shipping people off to space colonies, each containing about 10,000 people. Assuming that we

    asked by Eva on February 25, 2011
  83. Chemistry

    In a certain experiment, when light of wavelength 570 nm is directed on to the photocell, electrons are emitted at the rate of 6.6 10-13 Coulombs/sec. Assume that each photon that impinges on the photocell emits one electron. How many photons per second

    asked by Brandon on October 24, 2011
  84. Physics. Free electron density, please help!

    A length of wire has a radius of 3.00 × 10-3 m and a resistance of 0.200 Ω. When the potential difference across the wire is 10.0 V, the electron drift speed is found to be 2.98 × 10-4 m/s. On the basis of these data, calculate the density of free

    asked by samantha on November 21, 2012
  85. Chemistry

    In a certain experiment, when light of wavelength 570 nm is directed on to the photocell, electrons are emitted at the rate of 6.6 10-13 Coulombs/sec. Assume that each photon that impinges on the photocell emits one electron. How many photons per second

    asked by Brandon on October 24, 2011
  86. Chemistry

    When light of a wavelength of 125 nm strikes a certain metal, electrons having a velocity of 8.2 x 10^5 m/s are emitted from the surface of the metal. What is the threshold frequency of the metal? The answer is 1.9 x 10^15 s^-1 I'm not sure how to do this.

    asked by Shaniquaa on December 7, 2008
  87. Quantitative Literacy | MAT106 VG

    Pick four cities and divide them into pairs. Use the Internet to find the length of the circle between the first pair of cities. You might try using the site Great Circle Mapper or a similar Web site to help you. Estimate the great circle path between

    asked by TANYA on October 15, 2010
  88. Physical Science

    Diamond is a covalently bonded substance made of pure carbon. Each carbon atom has six total electrons so this means carbon shares ________ electron(s) with other carbon atoms. A) one B) two C) four D) six Help Please!

    asked by Ben Dover on June 1, 2016
  89. chemistry

    I have to answer this question for chemistry. It deals with ionic compounds, like how when an atom loses or gains electrons, energy is involved. So the question is Would the same amount of energy that's taken, be given off? (lost/gained)

    asked by lola on October 21, 2009
  90. Physical Science

    Hello, Can some one please tell me if I have the correct answer? Thank You my answer: D In a cathode ray tube, the number of electrons that reach the fluorescent screen is controlled by the? A.anode B.cathode C.deflecting plate D.grid

    asked by Mandi on March 23, 2008
  91. chemistry

    Light with a wavelength of 405 nm fell on a strontium surface, and electrons were ejected. If the speed of an ejected electron is 3.39 105 m/s, what energy was expended in removing the electron from the metal?

    asked by Anonymous on November 12, 2010
  92. Chemistry

    Draw a bohr diagram of the protons and electrons in each of the following: The ionic compounds lithium fluoride, LIF, and beryllium chloride, Becl2. Do I draw these 2 compounds separately, and I'm unsure of how.

    asked by Derrick on July 8, 2010
  93. Physics Waves

    Earthquakes are essentially sound waves traveling through the earth. They are called seismic waves. Because the earth is solid, it can support both longitudinal and transverse seismic waves. These travel at different speeds. The speed of longitudinal

    asked by Mike on April 21, 2010
  94. Astronomy

    What percentage of the energy budget do electrons occupy? Take the energy budget occupied by matter to be 4.4%. (a) 3.9% (b) 0.1% (c) 0.03% (d) 0.002%

    asked by qwerty on October 1, 2013
  95. Physics

    the charge on a pith ball was measured as +40 nC. if the charge on an electron is -1.6 x 10^-19, how many electrons have been added or removed from the ball?

    asked by Elena on January 31, 2015
  96. SCIENCE

    How do you figure out the following ..?::::: Mass Number Number of Protons Number of Electrons (OF A ELEMENT) Number of Neutrons Thanks ~ Courtneeeey (:

    asked by Courtney on September 6, 2011
  97. Science

    When an oxygen atom forms an ion, it gains two electrons. What is the electrical charge of the oxygen ion? A. +2 B. -1 C. -2 D. +1

    asked by Jamal on May 23, 2015
  98. Physics

    Work Function 1 > Work Function 2 In which case will the Kinetic energy of the emitted electrons be greater ?

    asked by Minhye on February 2, 2016
  99. chemistry

    A scientist discovers that an atom with a mass number of 14 contains eight electrons. According to the scenario, what is the atom's atomic number? 22 6 8 14 please help

    asked by Anonymous on August 24, 2017
  100. earth science

    If an atom has 17 electrons and its mass number is 35, calculate the following: number of protons, atomic number, and number of neutrons.

    asked by johnathan on September 23, 2010