Posts by katie

Total # Posts: 2,213

  1. Physics

    Anybody help me with this? A disk with mass m = 6.5 kg and radius R = 0.41 m hangs from a rope attached to the ceiling. The disk spins on its axis at a distance r = 1.4 m from the rope and at a frequency f = 19.4 rev/s (with a direction shown by the arrow). 1) What is the ...
  2. physics

    A purple beam is hinged to a wall to hold up a blue sign. The beam has a mass of mb = 6.9 kg and the sign has a mass of ms = 15.3 kg. The length of the beam is L = 2.55 m. The sign is attached at the very end of the beam, but the horizontal wire holding up the beam is attached...
  3. chemistry

    Please Help!!!
  4. chemistry

    What's the net ionic equation for the reaction: PH3(g) + O2(g) ? P2O5(s) + H2O(g)? Please go step by step:)
  5. Physics

    A uniform disk with mass m = 9.42 kg and radius R = 1.31 m lies in the x-y plane and centered at the origin. Three forces act in the +y-direction on the disk: 1) a force 315 N at the edge of the disk on the +x-axis, 2) a force 315 N at the edge of the disk on the –y-axis...
  6. physics

    An object is formed by attaching a uniform, thin rod with a mass of mr = 7.42 kg and length L = 4.88 m to a uniform sphere with mass ms = 37.1 kg and radius R = 1.22 m. Note ms = 5mr and L = 4R. 3) What is the moment of inertia of the object about an axis at the center of mass...
  7. Math

  8. science

    What are three reasons lichens are useful to humans? Thanks!
  9. physics

    A mass m = 88 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 15.5 m and finally a flat straight section at the same height as the center of the loop (15.5 m off the ground). Since the mass would not make it around the loop if ...
  10. physics

    A block with mass m = 17 kg rests on a frictionless table and is accelerated by a spring with spring constant k = 4201 N/m after being compressed a distance x1 = 0.556 m from the spring’s unstretched length. The floor is frictionless except for a rough patch a distance d...
  11. Health

    Okay, so in order to help you you have to give us YOUR answers. You can’t just ask for the answer. This website is for HELP not for cheating
  12. math

    The difference between two numbers is 4. The sum of the smaller number and three times the larger number is 36. What are the two numbers?
  13. Physics

    a ball of putty has a mass of 1.5kg and is rolling toward the north with a velocity of 2m/s. it collides with another putty ball with the same mass travelling towards the east with a velocity of 10m/s. find the velocity of the combined mass after a completely inelastic collision
  14. Calculus

    a small business estimates that its profit from producing x items can be modelled by: P(x) = 0.003x^3 - 1.5x^2 + 200 - 1000 due to limited space and capital, the number of items produced must not exceed 350 items. Explore the model and make suggestions to the business owner to...
  15. physics

    A cannonball is shot (from ground level) with an initial horizontal velocity of 41 m/s and an initial vertical velocity of 22 m/s. 1) What is the speed of the cannonball 1.7 seconds after it was shot? 2) How high above the ground is the cannonball 1.7 seconds after it is shot?
  16. physics

    Determine the x and y components of the following three vectors in the xy plane. 1) (a) A 14-m displacement vector that makes an angle of 22° clockwise from the +y direction. x: 2) y: 3) (b) A 19-m/s velocity vector that makes an angle of 40° counterclockwise from the...
  17. physics

    A blue ball is thrown upward with an initial speed of 21.0 m/s, from a height of 0.8 meters above the ground. 2.6 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 8.3 m/s from a height of 24.6 meters above the ground. The force of ...
  18. Lesson 4: Classifying Polygons

    Meh is right.
  19. Math

    Find the volume of the rectangular prism. A- 23in^3 B- 297in^3 C- 318in^3 D- 159in^3 Please help and the numbers H- 3 l- 9 w-11
  20. I need help!

    Write as a percent rounde the percents to the nearest tenth if necessary 5/7
  21. geometry

    If a triangle has a 4 meter side and a 9 meter side, between what lengths could the last side be? I have the answer, but I can't figure out why/how. Thanks!
  22. Statistics

    According to a recent survey, 65% of all customers will return to the same grocery store. Suppose 11 customers are selected at random,what is the probability that A) exactly 5 will return? B) all 11 will return? C) at least 6 will return D) at least one will return E) how many...
  23. math HELP PLEASE

    Describe each pattern with the general term: a. 2, 4, 6, 8 ... b. 4, 7, 10, 13 ... c. 1, 4, 9, 16 ...
  24. math HELP PLEASE

    T1 = 1 T2 = 0+5 = 5 T3 = 2*6 = 12 T4 = 100÷2+10 = 60 T5 = 1*3-1 = 2 Like this?
  25. math HELP PLEASE

    Given the pattern rule, write the first 5 terms for each sequence: a. Start with 0, add 5 b. Start with 2, multiply by 6 c. Start with 100, divide by 2 and add 10 d. Start with 1, multiply by 3, subtract 1
  26. Chemistry

    How many molecules are there in 6.8 grams of CO2
  27. Chemistry

    The approximate concentration of hydrochloric acid, in the stomach is 0.17M .calculate the mass of the following antacids required to neutralize 50mL of this acid; 1.) bicarbonate of soda, NaHCO3 2.) aluminum hydroxide, Al(OH)3
  28. Math

    Bill wants to paint the ceiling and four walls of his bedroom. The room is 6.0 m long, 3.0 m wide and 2.4 m high. Paint comes in 4 L cans. One litre of paint covers 10 m2. What area does Bill need to paint? How many cans of paint does Bill need?
  29. Math

    A trapezoid has an area of 60 cm2 and a height of 5 cm. What is the sum of its parallel sides?
  30. Math

    The cost of fish is $6.75/kg. What is the cost of 850 grams?
  31. Math

    A green paint is created by mixing 3 parts of yellow with every 5 parts of blue. How many gallons of yellow paint are needed to make 44 gal of this green paint?
  32. Math Help

    The area of the parallelogram is given. Find h ———————————-\ | \ \ | \ \ h | \ 12m2 \ | \ \ | \ \ | \ \ — — ——————————--\ h 6m
  33. literature

    In the house on mango street, after she gets married, what does Sally do all day because her husband won’t allow her to do all that she wants? A. She sits and looks out the window and at her possessions. B. She talks to her friends on the telephone. C. She reads and ...
  34. history

    "Man is born free, and everywhere he is in chains." The quote above most accurately reflects the need for which of the following Enlightenment ideals? •individual freedom*** •faith •moderation
  35. Math

    How does x + 0.08x turn into 1.08x?
  36. chemistry

    NaOH + HCl ? NaCl + H2O
  37. Math

    Given a rectangle is transformed using the rule (x,y)?(-x,-y),what transformation occurred?Rotation or reflection.If Rotation name the direction and degrees and if reflection name the line. I think it's Rotation 180 degrees.Is that correct?
  38. Language arts

    Think it's b too
  39. my success

    The card holders name and expiration date is on the front of the card while the info about the day the account was opened is not mentioned anywhere on the card.
  40. my success

    It's the magnetic strip.
  41. Math

    Given a rectangle is transformed using the rule (x,y)?(-x,-y),what transformation occurred?Rotation or reflection.If Rotation name the direction and degrees and if reflection name the line.
  42. Math

    No I'm sorry I got confused.You are correct.Thank you.
  43. Math

    Will it be reflection over the origin or will it be rotation 180 degrees clockwise/anti clockwise
  44. Math

    Given the points A=(2,-3) and B=(-3,1),if they are transformed to the points A'(-2,-3) and B'(3,1) what transformation occurred?Rotation or reflection?If rotation name the degree and direction and if reflection,name the line of reflection. No graph necessary.
  45. english

    can someone help me for free to put the word abstract in a sentence?
  46. literature

    From "There will come soft rains", Although Bradbury’s story takes place in the future, what real war is Bradbury commenting on in his story? [Hint: the story was published in 1950] How was that war fought/won differently than WWI? What technological development...
  47. History, please check

    yes b,c,d is correct just took this & got 100%
  48. ss-idk

    In the late 1990s the Mexican government passed a number of laws concerning the manufacture and operation of automobiles. These included switching to cleaner-burning fuels, installing catalytic converters on new cars, requiring tougher vehicle inspections, and converting city...
  49. ss

    Historians generally agree that the first international slave trade in Africa was A) with Portuguese traders. B) across the Indian Ocean. C) across the Sahara Desert. D) the Trans-Atlantic Slave Trade. ***
  50. ss

    command economy cuba
  51. ss

    I trying to choose between c and d?
  52. ss

    In which country would you MOST expect to find state-controlled industry, the greatest amount of restrictions on private business ownership, and the majority of the population working for the government? A) Brazil B) Canada C) Cuba D) Mexico idk this can someone explain?
  53. ss

    5)A 8) B
  54. ss

    5)A 8)I don't get it- the occupation of Germany involved Hitler who killed thousands of jews
  55. ss

    In what way is the government of the United Kingdom similar to that of the United States? A) Both have a head of government that is a member of the legislative branch. B) Neither government has a formal set of written laws as a framework. C) Both have seen their powers ...
  56. social studies- helpppp

    France and Britain were able to avoid the worst of the Great Depression because A) their colonies were required to purchase goods from them.**** B) neither had any significant involvement in international trade. C) the Great Depression affected only the United States, not ...
  57. Market economy/government

  58. Market economy/government

    I do not get this question, can you explain/ give me a link plz?
  59. Market economy/government

    In a market economy, a high price will usually cause A) producers to offer less and consumers to buy less. B) producers to offer less and consumers to buy more. C) producers to supply more and consumers to buy less.*** D) producers to supply more and consumers to buy more The...
  60. ss

    Can you check my other posts plz?
  61. ss

    Europeans began to settle in Latin America in the 1500s. Many of these settlers married Native Americans. The children of mixed European and Native American ancestry were called mestizos. . Mestizos became a new A) peer group. B) ethnic group.*** C) family group. D) political...
  62. Social Stuidies

    Thanks Ms Sue can you check my other post?
  63. Social Stuidies

    What was happening in Europe during the 1600s which caused Europeans to explore new trade routes? A) A period of religious revival was beginning. B) The enlightenment created a spirit of adventure.*** C) Political pressure pushed many to leave Europe for new lands. D) The ...
  64. ss helpppp

    can you check my other post?
  65. ss helpppp

    actually B
  66. ss helpppp

    I do not get the 2nd question, Can you explain it to me plz?
  67. ss helpppp

    The most obvious influence of British colonization on the country of Australia is Australia's A) use of the English language.**** B) adoption of British currency. C) declaration of war on France. D) participation in world trade. Which of these marked the southern border of...
  68. Social Studies urgent

    I meant B
  69. Social Studies urgent

  70. Social Studies urgent

    All of these were inspirations for 15th Century European exploration of the Western Hemisphere EXCEPT A) the desire to spread Christianity B) the desire to conquer India and China C) the desire to establish new trade routes to Asia D) to search for basic resources and land ...
  71. Trade

  72. Trade

    One of the PRIMARY reasons that trade between nations takes place is because A) no nation can be economically self-sufficient. B) resources are evenly distributed around the world. C) nations use their absolute advantage in production to monopolize international markets. D) ...
  73. Diseases- SS

    ok, thx
  74. Diseases- SS

    In the years between 1517 and 1617, which disease killed the greatest number of Native Americans in Florida? A) Measles B) Smallpox *** C) Influenza D) Bubonic Plague
  75. SS check plz

    :) Your the best
  76. SS check plz

    If governments around Europe reduced funding for primary and secondary schools, which of these would be the MOST likely to be the result? A) Europeans would take more vacations. B) Europeans' standard of living would decrease. **** C) Europe would export more "high ...
  77. Social Studies please help fast

    thx Reed, :)
  78. Social Studies please help fast

    Which of these is a natural result of specialization? A) Isolation is caused by specialization. B) When people specialize they become rich. C) Specialization leads to interdependence.*** D) Specialization leaves people worse off than without Why were the Europeans able to ...
  79. algebra 1

    Are these both prime? Can they be factored? y^2-y+156 and r^2-9r-39 Thank you
  80. algebra 1

    If the volume of a prism is 3x^2 + 6x - 24, what are the dimensions? Please help.
  81. Science

    which of the following is true about kinetic energy select all that apply A as an objects speed increases kinetic energy decreases B only moving objects have kinetic energy ••• C kinetic energy increases as an objects height increases D kinetic energy depends on...
  82. Algebra

    A worker gets 18 dollars per hour for a normal work week of 40 hours and time-and-a-half for overtime. Assuming he works at least 40 hours a week, construct a function describing his weekly paycheck,P, as a function of the number of hours worked, t. P(t)=____ dollards I PUT P(...
  83. English

    Identify the compliments in the sentence the newspaper published an article and an editorial about mayor Sharon Pratt Texan
  84. Algebra

    Thanks for the help! It actually helped it... the answer was 27.4*(.961)^t))
  85. Algebra

    The yearly per capita consumption of whole milk in the United States reached a peak of 40 gallons in 1945, at the end of World War II. By 1970 consumption was only 27.4 gallons per person. It has been steadily decreasing since 1970 at a rate of about 3.9% per year. (a) ...
  86. science

    Where are the major zones of volcanism? Thanks!
  87. Math

    Eleven seats on a condominium association board for buildings Amity, Buddy, and Chum are to be apportioned. Current Representation: Amity Buddy Chum 1 800 2113 4050 2 267 704 1350 3 133 352 675 4 80 211 405 5 53 141 270 Use the given table of Huntington-Hill numbers to list ...
  88. Math

    Eleven seats on a condominium association board for buildings Amity, Buddy, and Chum are to be apportioned. Current Representation: Amity Buddy Chum 1 800 2113 4050 2 267 704 1350 3 133 352 675 4 80 211 405 5 53 141 270 Use the given table of Huntington-Hill numbers to list ...
  89. Algebra

    Factor: x^2+6x Please give step by step directions! Thanks!
  90. Calculus help

    Yes... I had been working on it for some time before i posted it.
  91. Calculus help

    Oh, nevermind, i figured it out. The answer is 1. It was simpler than i thought
  92. Calculus help

    You are going to make many cylindrical cans. The cans will hold different volumes. But you'd like them all to be such that the amount of sheet metal used for the cans is as small as possible, subject to the can holding the specific volume. How do you choose the ratio of ...
  93. Art

    Find examples of tints, shades, primary and secondary colors, and warm and cool colors in "the banjo lesson". Thanks!
  94. English

    The Rhythm and rhyme patterns of the Limerick form are important because A) funny poems should have rhyming lines B) they make limericks easy to understand C) they add to the humor of limericks D) they make Limericks easy to write
  95. CHEM 101 (edited)

    Calculate ?Hrxn for the following reaction: CaO(s)+CO2(g)?CaCO3(s) Use the following reactions and given ?H values: Ca(s)+CO2(g)+1/2O2(g)?CaCO3(s), ?H= -812.8 kJ 2Ca(s)+O2(g)?2CaO(s), ?H= -1269.8 kJ I have literally tried everything and I don't understand what I am doing ...
  96. CHEM 101

    Calculate ?Hrxn for the following reaction: CaO(s)+CO2(g)?CaCO3(s) Use the following reactions and given ?H values: Ca(s)+CO2(g)+12O2(g)?CaCO3(s), ?H= -812.8 kJ 2Ca(s)+O2(g)?2CaO(s), ?H= -1269.8 kJ
  97. Algebra

    Factor this: x^2-5x+12 It may be prime. I tried to work it out, and I ca't figure out how, and that is whyI think it may be prime. Thanks!
  98. english

    What happened to the men that eat the Lotus? What does this suggest about the main problem that Odysseus has with his men? (From the Odyssey) Thanks!
  99. english

    What are some reminders of The Iliad and The Odyssey that can be found in today’s world? Why does Penelope not agree to marriage even after 10 years of waiting for her husband to return? Who would be our modern-day equivalent of Greek bards? I am so confused! Sorry for ...
  100. english

    After escaping the Sirens, in which direction does Odysseus sail toward the home of Scylla and Charybdis? Scholars have named the Straits of Messina as the home of Scylla and Charybdis. Why might these watery threats be attributed to this geographical feature? (from the ...
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