Popular questions and responses by christian
  1. physics

    A jet plane lands with a speed of 110 m/s and can decelerate uniformly at a maximum rate of 4.1 m/s2 as it comes to rest. Can this plane land at an airport where the runway is 0.80 km long? Answer this by calculating. Answer in units of km

    asked on September 22, 2011
  2. Chemistry

    Which of the following would involve the largest production of heat per mole? a)the burning of gasoline b)the evaporation of water c)the fission of uranium d)the freezing of water e)the rusting of iron Is it C) Which of the following would involve the

    asked on July 23, 2010
  3. Physics

    A 2-kg brick is moving at a speed of 6 m/s. how large a force F is needed to stop the brick in a time of 7x10^-4 s?

    asked on December 9, 2015
  4. math

    1. Which angles are adjacent angles? (1 point) ∠GBM and ∠FBC ∠CBX and ∠FBC ∠XBG and ∠FBC ∠MBY and ∠FBC 2. The measure of ∠3 is 101°. Find the measure of ∠1. (1 point) 101° 106° 74° 79° 3. Is line l parallel to line m? Explain.

    asked on February 3, 2014
  5. Physics

    A rocket of mass 1000 kg containing a propellant gas of 3000kg is to be launched vertically. If the fuel is consumed at a rate of 60kgs-1, calculate the least velocity of the exhaust gasses if the rocket and content will just lift off the launching pad

    asked on October 1, 2017
  6. History- WWI

    What effect did the entry of the United States into WWI have on the war? Why?

    asked on November 6, 2007
  7. MATH

    Please help meee How many cubes with side lengths of 1/3 does it take to fill the prism? The prism has side lengths of 5/3, 4/3, and 2. PLEASE HELPPPP ​

    asked on November 16, 2019
  8. Chemistry Help! (Rydberg Equation)

    a) According to the Rydberg equation, the line with the shortest wavelength in the emission spectrum of atomic hydrogen is predicted to lie at a wavelength (in nm) of _____ b) According to the Rydberg equation, the longest wavelength (in nm) in the series

    asked on October 5, 2014
  9. economics

    Is your consumer behavior influenced by advertising or the news? Discuss one or two examples of media that have influenced your desires or affected your consumer choices

    asked on March 26, 2013
  10. math

    A cheetah traveling at 31 m/s chased its prey for 11 seconds. What distance did the cheetah travel during the chase??

    asked on February 20, 2018
  11. maths

    find the product of x and y if x,3/2,6/7,y are in geometric progression

    asked on October 18, 2017
  12. Physics

    A child sits on a rotating merry-go-round, 2.19 m from its center. If the speed of the child is 2.32 m/s, what is the minimum coefficient of static friction between the child and the merry-go-round that will prevent the child from slipping?

    asked on March 6, 2011
  13. English

    "Reason your sympathies lean as they do" I'm trying to complete a chart. Can somebody explain what this means.

    asked on November 6, 2010
  14. Math

    Use the GCF and the distributive property to write 24 +40 as a product

    asked on October 22, 2019
  15. Finance

    Suppose that five years ago Cisco Systems sold a 15-year bond issue that had a $1,000 par value and a 7 percent coupon rate. Interest is paid semiannually. a. If the going interest rate has risen to 10 percent, at what price would the bonds be selling

    asked on September 27, 2012
  16. English

    Determine the rhythm and meter of each set. "Workers earn it. Spendthrifts burn it. Bankers lend it Women spend it. Forgers fake it. Taxes take it. Dying leave it. Heirs receive it. Thrifty save it. Misers crave it. Robbers seize it. Rich increase it.

    asked on October 22, 2007
  17. algebra

    Which shows the expressions in the order they would appear on a number line from least to greatest? 17 over 9, square root of 6, square root of 15, square root of 30, 3 to the power of 3 3 to the power of 3, square root of 30, square root of 15, square

    asked on October 7, 2015

    Which expression is equivalent to 32 ⋅ 3−5? fraction 1 over 3 to the power 3 fraction 1 over 3 to the power 7 fraction 1 over 3 to the power negative 3 fraction 1 over 3 to the power negative 7

    asked on October 7, 2015
  19. Physics

    A skier moves 100.0 m horizontally, and then travels another 35.0 m uphill at an angle of 35.0º above the horizontal. What is the skier's displacement from his starting point?

    asked on February 12, 2015
  20. personal finance

    Which type of tax is calculated on a per-item basis?

    asked on January 28, 2015
  21. trigonometry

    To the nearest degree what is the angle formed with the ground by a 32 ft ladder if it is leaning against a wall at a height of 28 ft?

    asked on May 8, 2014
  22. social studies

    In 1846, the population of San Francisco, California, was only 200. By 1852, the city's population was 36,000. Which contributed the most to San Francisco's population change? (5 points) The Gold Rush The Mexican-American War The Monroe Doctrine The Trail

    asked on February 23, 2014
  23. math

    The mass of a bag of sand was 2.95 kilograms when it was 2/3 full. When 1/6 of the sand was removed, the mass of the bag of sand became 2.325 kilograms. Find the mass of the empty bag in kilogrmas. Help!

    asked on October 18, 2011
  24. riddle

    what is something and nothing at the same time?

    asked on August 25, 2008
  25. algebra

    If an area of a square garden is 141 square feet how much fencing is needed to enclose the garden?

    asked on February 5, 2020
  26. History

    Explain in your own words why you listed this particular cost as the “#1 Cost of the American Civil War.”

    asked on August 15, 2014
  27. math ugh.

    at a small private collage, 9/20 of the students are female. there are 2160 female students, then how much are male?

    asked on April 4, 2013
  28. chemistry Emergency TEST

    1.How many moles of sodium oxide are produced when3.9 moles of sodium combine with excess oxygen. 2. Sodium chloride decomposes into elemental sodium and elemental chlorine.How many grams of chlorine will be produced if 39.4 grams of sodium chloride

    asked on February 14, 2013
  29. math

    Explain why 0.7=0.70.

    asked on November 2, 2011
  30. math

    i am a number between 20 and 30. when u divide me into 6 equal groups, there is an even number in each group and 2 are left over. what number and I

    asked on October 30, 2011
  31. Engineering Statistics

    "A study has shown that 20% of all college textbooks have a price of $90 or higher. It is known that the standard deviation of the prices of all college textbooks is $9.50. Suppose the prices of all college textbooks have a normal distribution. What is the

    asked on October 11, 2011
  32. Chemistry

    What is the molarity of a sodium hydroxide solution if 38 mL of the solution is titrated to the end point with 14 ml of .75M sulfuric acid?

    asked on May 18, 2011
  33. Social Studies

    Why did the british government go into debt?

    asked on September 30, 2008
  34. Spanish

    I need help conjugating the verb Pasar into prsent tense, imperfect tense, preterite, -ing, tu affirmative command, Ud. affirmative command, Uds. affirmative command, future, and conditional tense. I also need to conjugate Tener into present tense. I am

    asked on January 9, 2008
  35. Psychology

    How do traumatic brain injuries occur. I don't mean like concussions or contusions though. I am trying to write a report on how brain injuries affect personality but i am not sure how a serious brain injury occurs.

    asked on October 28, 2007
  36. Algebra 2( it's a tough one!)

    Jose needs to enclose a rectangular section of his yard. The area is 35 sq. ft. and the perimeter is 27 sq. ft. Find the length and width of the section. let l be the length, and w be the width in feet. so 2l+2w=27 --->l+w=13.5 ----> w=13.5-l secondly

    asked on May 3, 2007
  37. English

    How would a student justify inferring that “indigenous” means “originating in a particular region”?

    asked on June 7, 2019
  38. math

    You jogged 11 kilometers at an average speed of 10 kilometers per hour. How long did you jog? I need help please

    asked on February 20, 2018
  39. physics

    A box weighing 87 lb is being pulled with a rope that exerts a force of 60. lb at an angle of 15 degrees with the horizontal. if the coefficient of kinetic friction is .35, what is the kinetic friction?

    asked on August 24, 2017
  40. Algebra

    Violet used 1 3/4 gallons of paint on her kitchen wall.She used 4 times as much paint for her living room and bedroom walls. How much paint did Violet use for the living bedroom walls?

    asked on January 17, 2017
  41. Math

    Ivan has a 5-cent stamp, a 10-cent stamp, and a 20-cent stamp.How many different combinations of postage can he form with the stamps?

    asked on January 8, 2017
  42. Trig

    Cicero has a population of 6200 people and is growing at a rate of 8% per year . Mattydale has a population of 8750 and is growing at a rate of 6% per year create and equation solve the problem and in how many years to the nearest year will Cicero have a

    asked on December 6, 2016
  43. maths

    The bearing of two points Q and R from a points P are 030 degree and 130 degree respectively. If PQ is12cm and PR is 5cm, find QR

    asked on July 6, 2016
  44. Chemistry

    4.13 grams of magnesium chloride were recovered after the chemical reaction between magnesium and chlorine gas occurred. If 7.10 grams of magnesium chloride was suppose to be produced, what is the percent yield of magnesium chloride?

    asked on April 22, 2016
  45. grammar

    would social studies be capitalized in this sentence: I don't understand how he did the social studies problem.

    asked on April 14, 2015
  46. Physic

    I need someone that can help with a formula any smart people. Law of universal gravitation f=g m 1 x m2 /r^2 needs to k ow what g is? Help?

    asked on October 17, 2014
  47. Accounting

    1. Compute the estimated uncollectible accounts at the end of the year using the following rates: Current 1% 1–30 days past due 3% 31–60 days past due 9% Over 60 days past due 25% 2. As of December 31, 2013, there is a credit balance of $208.20 in

    asked on September 12, 2014
  48. Accounting

    Ultra Leather Products sells leather clothing at both wholesale and retail. The company has found that there is a higher rate of uncollectible accounts from retail credit sales than from wholesale credit sales. Ultra computes its estimated loss from

    asked on September 12, 2014
  49. Physics (Help Please)

    Most of us know intuitively that in a head-on collision between a large dump truck and a subcompact car, you are better off being in the truck than in the car. Why is this? Many people imagine that the collision force exerted on the car is much greater

    asked on April 8, 2014
  50. Physics (Help Please)

    An astronaut of mass 84.0 kg is taking a space walk to work on the International Space Station. Because of a malfunction with the booster rockets on his spacesuit, he finds himself drifting away from the station with a constant speed of 0.570 m/s. With the

    asked on April 8, 2014
  51. Physics (Help please)

    A force platform is a tool used to analyze the performance of athletes measuring the vertical force that the athlete exerts on the ground as a function of time. Starting from rest, a 60.0 kg athlete jumps down onto the platform from a height of 0.600 m.

    asked on April 8, 2014
  52. math

    I am the greatest common factor of three numbers. Their sum is 36. The largest number is twice the smallest and the middle number is the mean of the other two. What are the three numbers? What number am I?

    asked on March 31, 2014
  53. Science

    In a hypothetical experiment, the blood flow between two dogs is joined and one dog is stressed so that its heart rate goes up rapidly. What will happen to the heart rate of the second dog? a) It will remain calm because the heart rate is determined

    asked on February 4, 2014
  54. sociology

    In what way were Karl Marx and Charles Wright Mills alike in their thinking and understanding of society?

    asked on March 27, 2013
  55. physics

    a loaded cart, mass220-kg is pulled across the ground with the force of300n acting at angle 37 degree with the horizontal. how much work is done in moving the cart 20m?

    asked on March 20, 2013
  56. physics 112

    what is meant by a change in temp of 1 degree celcius on the scale of a platinum resistance thermometer

    asked on January 27, 2013
  57. Physics

    A 75.0kg bobsled is pushed along a horizontal surface by two athletes. After the bobsled is pushed a distance of 4.5m starting from the rest, its speed is 6.0m/s. Find the magnitude of the net force on the bobsled.

    asked on January 10, 2013
  58. physical scinsce

    A cannon that is 10m long is designed to launch a 10kg ball over a castle wall. In order to do this the ball must have a speed of at least 50m/s as it exits the cannon. For every 10kg of explosives used, the force on the ball in the cannon increases by

    asked on September 27, 2012
  59. math

    a fencing company was asked to enclose three gardens with wire fences: a rectangular garden with a length of 270 meters and a width of 1123.62 meters; a square garden with a side length of 657.955 meters; and a rectangular garden with a width of 35 meters

    asked on September 20, 2012

    How do you apply critical thinking to someone's else writing?

    asked on July 8, 2012
  61. science

    how far will 350 jules raise a block weighing 7n

    asked on March 12, 2012
  62. Chemistry

    When one of the following substances is dissolved in water, the only positive ions in the solution are hydrogen ions. NaOH NaH H2S Nh3

    asked on February 25, 2012
  63. Chemistry

    When one of the following substances is dissolved in water, the only positive ions in the solution are hydrogen ions. CH3OH LiOH PO4 -3 CO 3 -2

    asked on February 25, 2012
  64. Algebra

    Flying with wind, a plane flew 800 miles in 5 hrs. Flying against the wind, the plane flew the same distance in 8 hrs. Find the still air speed and wind speed.

    asked on November 7, 2011
  65. Pre-calculus

    So a computer virus has been created via Corporate e-mail. Let t=0 be the time of the first 100 infections, and at t=17 minutes the population of infected computers grows to 200. Assume the anti-virus companies arent able to identify the virus or slow its

    asked on May 11, 2011
  66. CHEM-102

    Ka for hypochlorous acid,HClO is 3.0x10^-8. Calculate the pH after 10.0, 20.0, 30.0, and 40.0mL of 0.100M NaOH have been added to 40.0mL of 0.100M HOCl.

    asked on March 27, 2011
  67. math

    which number is least, which number is greatest 30%, 3/4, .34

    asked on November 8, 2010
  68. maths

    If a conveyor belt travels at 0.22m/s how far can it travel in 30 secs?

    asked on August 1, 2010
  69. physics

    Which bear has the greater average velocity over the entire period? Which bear has the greater velocity at t = 8.0 min? Is the velocity of bear A always positive? Is the velocity of bear B ever negative?

    asked on February 10, 2010
  70. anatomy

    is there a good way to memorize the bones of the body? I have to know names, location, and what they look like.

    asked on October 13, 2009
  71. CHEM

    How many grams of water and iron must react to produce 543 g of iron oxide, Fe3O4? 3Fe + 4H2O---> Fe3O4 + 4H2

    asked on August 3, 2009
  72. science

    im 11 years old do you know a science fair project i can do for magnetism. or a website. im in six grade

    asked on October 30, 2008
  73. AP Biology

    Okay, so in the Lab Assignment that I'm currently working on in AP Biology, there is a question that says: - What results would you expect if a dialysis bag were filled with glucose and iodine and then placed into a beaker of starch and water? Its a

    asked on October 22, 2008
  74. "Brave New World"

    I am writing an essay after reading the first 3 chapters of "Brave New World" about how genetic engineering produced the society. What are the motives behind genetic engineering according to Huxley? Has genetic engineering "Improved" lives of the peopel in

    asked on April 28, 2008
  75. Psychology

    Create mnenomics for the terms: stores, encoding, processes, retrival, iconic memory, echoic memory, primacy effect, recency effect, semantic memory, and episodic memory.

    asked on April 4, 2008
  76. Algebra

    I am going to take an Accuplacer math placement test later this week. It is to determine what math course I need to take in college. The school would like me to place in statistics.This will be my second time taking the test. The first time I placed in

    asked on April 1, 2008
  77. History

    What were two intended outcomes of the Green Revolution and two unintended outcomes of the Green Revolution?

    asked on February 28, 2008
  78. Eng Literature

    Who is Richard Daly of the 1960's?

    asked on February 4, 2008
  79. English- Shakespeare

    Some people believe Shakespeare's plays were not really written by him. Soem people believe the real authors are anywhere from Francis Bacon to Queen Elizabeth while others support Edward de Vere. Who do you belive is the literary and historical

    asked on January 4, 2008
  80. Literarure(Ozymandias)

    How is the poem "Ozymandias" by Percy Shelley a Romantic poem? What elements make it a romantic poem? I read the poem a few times and I don't know how it is classified as romantic poetry.

    asked on December 26, 2007
  81. Psychology

    I am studying Jean Piaget's theory of development in my psychology class. What computer software might parents and adults use to teach young children? What aspect of the child's development would the software address?

    asked on December 18, 2007
  82. Psychology

    What are the repercussions of a bruised ego? Would it be correct to say that there is not much difference in the theories of Freud and Erikson on ego? Are there any consequences to a bruised ego? I don't think there are but I am having such trouble with

    asked on December 14, 2007
  83. Psychology

    What are the major criticisms of Freud's theory of personality by Alfred Adler and Carl Jung?

    asked on December 6, 2007
  84. Psychology

    Who is Phineas Gage and how did his behavior change after the accident? Could anyone help me with a report about behavioral repercussions od different brain injuries? I have to pretend someone I know has a brain injury and create 5 journal entries

    asked on October 25, 2007
  85. Social Studies

    Why did the French want to establish forts along the Atlantic coast of the new world?

    asked on September 27, 2007
  86. Algebra 2

    Give the x and y intercepts of the graph of 3x-2y=12.

    asked on September 10, 2007
  87. Algebra 2

    Completing the square method allows you to solve any quadratic equation. For each of the following determine what number completes the square. I cannot find my notes on completing the square, can someone please help with these two problems? 1. x^2+8x 2.

    asked on May 21, 2007
  88. Chemistry

    Hydrogen iodine is a strong acid that is used in chemical synthesis to produce some common drugs as well as a source for iodine, I2. Data for the formation of hydrogen iodine was obtained as shown. The reaction was found to be first order with respect to

    asked on May 19, 2007
  89. Chemistry

    Give the enthalpy change and entropy change values shown below calculate the free energy change for this reaction at 25 degrees C using Gibbs free energy equation. How does this value compare to the free energy change using the standard free energy of

    asked on May 16, 2007
  90. Chemistry

    Hydrogen peroxide is used as a bleachin agent, a disinfectant and medicinally as a topical antibacterial agent. Hydrogen peroxide decomposes according to the reacton 2H^2O^2(l)-->2H^2O(l)+o^2(g) A. Given the standard free energy of formation values shown

    asked on May 16, 2007
  91. Chemistry

    Hydrogen peroxide is used as a bleachin agent, a disinfectant and medicinally as a topical antibacterial agent. Hydrogen peroxide decomposes according to the reacton 2H^2O^2(l)-->2H^2O(l)+o^2(g) A. Given the standard free energy of formation values shown

    asked on May 15, 2007
  92. Chemistry

    If 500.0 mL of hydrogen are collected over water at 20.0 C and 99.3 kPa what will the volume of the dry gas be at STP?

    asked on May 13, 2007
  93. Economics

    Joe's burrito cart sits on a busy street corner. Customers line up to get Joe's hot fresh bean burritos filled with trimmings of their choice. In order to comply with regulations, Joe must keep his cart and utensils clean, advertise ingrediants on a

    asked on May 11, 2007
  94. Algebra2

    The area of a square garden in square feet is 49x^2-14x+1. Find the dimensions of the garden in terms of x. x^2=49x^2-14x+1 Then solve for x. 48x^2-14x + 1=0 (8x-1)(6x-1)=0 and solve for two values of x that are possible.

    asked on May 4, 2007
  95. Physics

    Why is it dangerous to roll open the top drawers of a fully loaded file cabinet that is not secure to the floor?

    asked on May 6, 2020
  96. Physics

    Two girls are sitting on the same side of a see-saw. One girl is 28 kg and sitting 2.4 m away from the middle. The other girl is 35 kg and 2.6 m away from the middle. Their dad can balance them out if he sits 2.0 m away from the middle on the other side.

    asked on May 6, 2020
  97. Discrete Math

    A certain connected graph has 68 vertices and 72 edges. Does it have a circuit? Explain.

    asked on April 24, 2020
  98. Math

    For every integer n, prove n^2-n is even. Can someone help me?

    asked on April 24, 2020
  99. Physics

    a small car has a head-on collision with a large truck. Which vehicle has the larger change in momentum?

    asked on April 13, 2020
  100. Physics

    A crate of mass 10 kg is pulled up a rough incline with an initial speed of 1.5 m/s. The pulling force is 100 N, parallel to the incline; which makes an angle of 20o with the horizontal. The coefficient of friction is 0.40, and the crate is pulled 5.0 m.

    asked on April 2, 2020


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