lucy

Newest questions posted by lucy
  1. Physics

    A 4.2 kg object is subjected to two forces, F~ 1 = (2.1 N) ˆı + (−1.7 N) ˆ and F~ 2 = (3.2 N) ˆı + (−11.2 N) ˆ. The object is at rest at the origin at time t = 0. What is the magnitude of the object’s acceleration?
  2. math

    In a Grand Prix automobile race, Speedy Ryder averaged 110 miles per hour for the first half of the course and 130 miles per hour for the second half of the course. Cannonball Carter maintained a constant speed of 120 miles per hour throughout the race.
  3. math

    Statuary Hall is an elliptical room in the United States Capitol Building in Washington, D.C. The room is also referred to as the Whispering Gallery because a person standing at one focus of the room can hear even a whisper spoken by a person standing at
  4. science

    Does sound go through a wooden block?
  5. History

    Explain the Elizabethan beliefs regarding pride.
  6. Physics

    A cylinder has a diameter of 15cm. The water level in the cylinder is maintained at a constant height of .45m. If the diameter of the spout pipe is .50cm how high is the vertical stream of water?Assume water to be an ideal fluid
  7. Math

    The model builder has 4 pieces of balsa wood that are 4 cm,5 cm, 6 cm, and 7 cm in length. How many different combinations of 3 pieces can be used to make triangles without breaking or cutting the pieces? List the combinations as inequalities.
  8. Social Studies

    1.How has geography shaped the history of Arabia and Iraq? 2.Why did Muslims split into Shia and Sunni groups?
  9. Social Studies

    1.What are the cultural traits of Russia? 2.What is the main religion of Russia?
  10. Civics

    Special purpose districts are 1. agencies that accept tasks from the national government. 2. neighborhood groups without government 3. local governments designed to meet a specific need 4. regions created only for running state elections
  11. English

    What is the main conflict in the book, Leaving Home? How does the author us "Italics" in the excerpt, and what is it letting the readers know? What is the true story" element in the book, I Am Malala? What is the purpose of dialogee, and what does it let
  12. English

    What is the main conflict in the play, Leaving Home?
  13. Chemistry

    A model rocket is launched straight upward with an initial speed of 45.0 m/s. It accelerates with a constant upward acceleration of 1.50 m/s2 until its engines stop at an altitude of 160 m. A. what is the max height reached by the rocket? B. How long after
  14. PAP ALG

    the average radius of Jupiter's orbit is 464,779,036 miles, and it travels at an average speed of 28,108 miles per hour. Q: How many years does it take Jupiter to orbit the sun?
  15. Math

    If three teachers can grade 40 tests in 3 hours, how many hours will it take 12 teachers to grade 480 tests?
  16. Math

    Find the measure of triangle ADC if A is (3x+2) degree, B is (4x-24) degree, C is (2x+2) degree and D is x+10 degree
  17. Social Studies

    What effect did United States policy have on the Soviet Unions war in Afghanistan and why did Soviet troops finally withdraw from Afghanistan in 1989? A. With U.S. support, the Soviet Union defeated the Afghan rebel forces. B. During peace talks, Ronald
  18. Statistic

    15% of m&m's candies in a bag are yellow. If you randomly pull 3 m&ms of the bag what is the probability the first one is yellow and the next two are not? A. 11% B. 22% C. 67% D. 85% My answer is D. 1 - 15% =0.85. I think I'm doing it wrong
  19. Statistic

    I pick a. Is it correct? Which of the following measurements is likely to have the least variation (the smallest standard deviation)? a. The volume of liquid in a simple of unopened 2-liter bottles of sodas. b. The SAT scores of a class of graduating high
  20. Chemistry

    After balancing the following redox equation(using small whole-number coefficients), add the coefficients of all species in the balanced equation. Bi(OH)3 + SnO2^(2-) → Bi + SnO3^(2-) (basic solution) --- I separated the equation into two and i know the
  21. Math

    For what value(s) of b, if any, will the function q(x) = (x^4)/2 +b*x^2 +32x-5 have a derivative of zero AND a point of inflection at the same value of x?
  22. math

    Santiago, a park ranger, was trying to estimate the number of catfish in a lake. He randomly caught 32 catfish, tagged them, and let them go. Six months later, he surveyed fisherman at the lake about how many catfish they caught that were tagged. His
  23. Calculus Question! ASAP!

    Hello! I have this problem: x(dx)/sqrt(9-x^2) I was wondering why I can't use trig substitution and substitute sqrt(9-x^2) for sqrt(1-sec^2) and having: integral x = 3sin(theta) dx = 3cos(theta)d(theata) integral 3sin(theta)(3cos(theta))/3cos(theta) having
  24. Help! Calculus

    I am so confused on how to solve this problem. I have it set up with y's on one side and x's on the other but I don't know what to do from there. Question: Solve the differential equation. The initial condition is y(0) = 1. ((x^2+1)^(1/2))(dy/dx) -
  25. Ap algebra

    2+3X^2-X^3=0 by use quadratic formula. The answer of textbook is 3.19 So I solved and came out a wrong answer What I did factor out (-X+3)X^2+2=0 Then By quadratic formula, a=1,b=0,c=2. Thus I got sqrt(8)/2
  26. Time Value of Money

    Please help me with guidelines on what really is the first thing to do when answering this type of questions on this topic,what is the catch on these topics?
  27. Managerial finance 4A

    Mr Paul is identified three investment opportunities that he is considering.one is investment A that is expected to pay N$800.00 ayear for three years,followed by N$1000.00 per year for four years. it will pay N$2000.00 at the end of the eighth year.
  28. math

    there are 32 students 12% got an A.How many of them got A's.i need help converting this percentage to a whole number please help
  29. English

    The movie called Curcible reveals the church and court both state that all liars will be damned, but only can tell who the real sinners are. What does that mean ? What are they trying to say ?
  30. HELP!

    Earth's inner core exists at temperatures as high as 7000oC. It exists as a _______ due to the _________. A) solid; high pressure B) liquid; high pressure C) solid; high temperature D) liquid; high temperature
  31. HELP!

    Which set of numbers is correctly ordered from smallest to greatest? A) 0.009, 0.0099, 0.0909, 0.099 B) 0.0099, 0.009, 0.0909, 0.099 C) 0.0909, 0.099, 0.009, 0.0099 D) 0.099, 0.0099, 0.009, 0.0909 Help ME!
  32. Math

    The approximate distance of the moon from Earth is 4 x 105 km and the average approximate distance from the Earth to Venus is 4 x 107 km. How much farther is Venus from Earth than the moon?
  33. Math ratios

    which is equivalent to 4/16 A. 2:4 B. 10:9 C. 10/24 D. 12 to 64
  34. AP Language-Inductive/Deductive

    These are pretty hard, at least to me. Please help me check my answers. 1. Most luxuries, and the so-called comforts of life, are not only indispensable, but positive hinderances to the elevation of mankind. With respects to luxuries and comforts, the
  35. Spanish 2 Present Subjunctive

    Please check my answers. I know I'm missing accents. 1. Os recomienda que ___ otra llave de recepcion. a) pedis b) pidais*** c) piden d) pida 2. Which of the following sentences is correct? a) Es importante tu estudies mucho. b) Es necesario que hacer
  36. steve plz help me on my math

    Find the perimeter of a rectangular area with a length of 13 inches and a width of 7 inches using distributive property and not using it.
  37. Math

    You want to buy three books that are on sale at 20% off. The original prices of the books are $2.50, $4.95, and $6.00. How much will you save?
  38. english

    what are the layers of analysis for 'if i'll why hath it given me earnest of success?' from act 1 scene 3 MACBETH SHAKESPEARE. thank-you.
  39. english

    'Agape is the highest form of love' Give two arguments with counter arguments to show you have considered more that one point of view. I need help ASAP
  40. Math

    A 73​-ton monolith is transported on a causeway that is 2500 feet long and has a slope of about 2.2°. How much force parallel to the incline would be required to hold the monolith on this​ causeway?
  41. Chemistry

    How many grams of ethanol must be added to 500.0 g of water to make a solution that freezes at 0.00 degrees fahrenheit? The molal freezing point depression constant for water is 1.86 degree celsius over moles.
  42. School Talk

    What happened to "School Talk?" That was kinda helpful.
  43. Biophysics

    Estimate the flow of oxygen into the cell through a side of the muscle cell squished up against the capillary. (give both moles/sec and # molecules/sec.)
  44. Math

    Please help me with this step by step show your work problem. |-4b-8|+|-1-b^2|+2b^3 (b= -2) My work |-4b-8|+|-1-b^2|+2b^3 |-4(-2)-8|+|-1-(-2^2)|+2(-2^3) |8-8|+|-1-4|-16 8+8+5-16 16+5-16 5 Could you check my work? If it is incorrect, could you show me the
  45. Physics

    Find, to 3 decimal place, the frequency of the hour hand of a clock
  46. Spanish 2

    1. Which of the following is correct? a) Maria estaba cocinando cuando ella se cortaba. b) Maria estaba cocinando cuando ella se corto. c) Maria estuvo cocinando cuando ella se cortaba. d) Maria estuvo cocinando cuando ella se corto. 2. Which of the
  47. interior decorateor

    Which of the following statements is correct regarding the design concept of emphasis? A. Focal points in a room's architecture must be emphasized with contrasting colors. B. A focal point can't be established in a setting where formal balance is used. C.
  48. Music

    Can anyone help me find guitar chords for Regina spektor' song a cannon?
  49. Physics

    A 2.8 kg duck is swimming at 0.35 m/s and a 3.4 kg goose is swimming at 0.75 m/s. Which bird would make the biggest impact on you if it carelessly swam into you? Explain. I'm not sure where to start. Could I have some help please?
  50. Physics

    A 2.8 kg duck is swimming at 0.35 m/s and a 3.4 kg goose is swimming at 0.75 m/s. Which bird would make the biggest impact on you if it carelessly swam into you? Explain. I'm not sure where to start. Could I have some help please?
  51. history

    Hi, I have this history question on a past exam paper i'm confused about, and was wondering if you could help? The question: "I write from the battlefield of the Great Push with thousands of shells passing in a tornado overhead, and thousands of unburied
  52. Science

    A 450-g block is attached to a spring of spring constant 45 N/m and is in simple harmonic motion on a frictionless surface with an amplitude of 7.5 cm. A second identical block, moving at 12 m/s in line with the spring, strikes the first one when the
  53. Math

    Three picture frames are on a dresser.two are shaped like squares and the other is a trapazoid. how many sides are there in the frames altogether? Please help today
  54. Life orientation

    discuss the contributing factors that lead to this issue
  55. Maths

    in a game you have to guess what a number is through some clues the clues you are given are the hundreds digit is twice as large as the thousands digit the ones digit is the largest the sum of the digits is 14 the tens digit is two less than the ones digit
  56. Chemistry

    What is the pH of a 0.052 Mole solution of HCl?
  57. Math 143

    What is the probability of not rolling a number larger than 4 with a fair die?
  58. Math

    Using only sides that are whole numbers, name the dimensions of three rectangles that have perimeters of 14 units.
  59. physics

    explain the physics concept to why a ship sounds when moving in water?
  60. physics

    explain the physics principle why the size of tree stem decreases upwards?
  61. physics

    state or law which explains why a ship can easily sink than overturn?
  62. physics

    why is it cold in winter and hot in summer basing on physics knowledge
  63. mathematics

    the age of jane and john add up to 25years.8years ago jane was twice as old as john.how old are they now?
  64. physics

    the age of jane and john add up to 25years.8years ago jane was twice as old as john.how old are they now?
  65. Math

    There are24 counters How many counter can you make and why
  66. pre algebra

    a community has 1316 females. if 47% of the community is female and 16% of all the females are left-handed, how many people are in the community?
  67. Math

    A shipping crate carrying e-readers has a length of 19 1/3 feet, a width of 7 2/3 feet and a height of 7 5/6 feet. What is the volume of the shipping crate. Please Help.........
  68. History

    What does this mean? "It is apparent to my mind that the President thoroughly believed the tenure of office act to be unconstitutional and void . He was advised by every member of his cabinet...... "This was a punitive statue. it was directed against the
  69. math

    Mrs Smith is having a party . She has 24 students . She estimates each student will eat 3/8.How many pizzas should Mrs. Smith order?
  70. ICT

    List five precautions users should take to protect themselves and their files when they are using a cybercafé.
  71. Science

    heartworm is a type of worm that enters a dogs body through a mosquito bite. it produces offspring that lodge in a dogs arteries and food off of surrounding cells. which type of relationship is this a. mutualism b. predation c. commensalism** d. parasitism
  72. US History

    William Penn found Pennsylvania for New England or New Netherlands? Thanks!
  73. english

    An imperative sentence is to a command as a declarative sentence is to a/an A. statement. B. wish. C. question. D. exclamation. my answer is D
  74. english

    (1) Jack had been without a car since Monday. (2) The car needed a new battery, and Jack was broke. (3) Although he was embarrassed, Jack called his mother. (4) He felt he had no choice. (5) Fortunately, his mom was happy to help out. (6) She said she had
  75. Science

    Why the átomo never seen before
  76. Ciencias

    ocasionalmente los hospitales tienen brote de infecciones por la bacteria estafilococos la cual reciste el tratamiento con antibiótico que una vez fuera efectivo. ¿cual es la explicación más aceptable para esta situación?
  77. Ciencias

    Porque el estafiilococo es resitente a los tratamiento con antibiotico
  78. math

    when james planted a tree 5 m from a window the tree just blocked from view a building 50 m away if the building was 20 m tall how tall was the tree?
  79. math

    when james planted a tree 5 m from a window the tree just blocked from view a building 50 m away if the building was 20 m tall how tall was the tree?
  80. Stats

    The manager of Lone Star Restaurant believes that the average wait time of the Saturday evening meal is 30 minutes. To test this belief, the manager selects 50 customers at random and computes the average wait time to be 34 minutes. Assume a population
  81. English

    Has anyone read "The Destructors" who can help me with a few questions? My questions are: The mood on "The Destructors" is best described as humorous horrific adventuresome cold In "The Destructors" Greene uses a lot of ___ in the boy's language to enrich
  82. Language Arts

    1. In which sentence is the word blander used logically? A. The cook added spices to make the food taste blander B. If you do not like hot food, you should you blander dishes C. In ordinary circumstances, hot sauce makes the food taste blander** D. The
  83. English

    please help me with this sentence they are many geeks already around the world.
  84. Math

    Is the simplified form of 2square root of 3 − 2square root of 3 rational Yes or No
  85. Math

    How do I rewrite this as a radical expression? (3 2/3) 1/6
  86. math

    please help me with this!!! How can I rewrite this as a rational exponent? 3 square root 2^7 Thanks
  87. Math

    write the following equation in slope intercept form 3x+4y=12 I'm lost on this question
  88. sciences

    All of the____in a given array must be the same type. Element, statement, instructions, loop.
  89. English

    A verb phrase that acts as a noun is called a(n) participal adverbial infinitive gerund Which of the following is a prepositional phrase in the sentence below? (Applause came from the bleachers.) Applause came came from from from the bleachers My answers:
  90. Spanish

    Which sentence correctly substitutes the bolded phrase? Carla compro /los anteojos de sol./ Carla las compro Carla lo compro Carla los compro Carla la compro I'm confused because it's los anteojos but I thought los was part of it, and that it doesn't make
  91. English

    Read the following line from "Not Waving but Drowning." "Poor chap, he always loved larking And now he's dead" a. detached b. pleased c. objective d. critical NOT WAVING BUT DROWNING Stevie Smith Nobody heard him, the dead man, But still he lay moaning: I
  92. Algebra

    Please check my answer The domain of the following relation: R: {(−4, 8), (8, 10), (5, 4), (1, 6), (5, −9)} is a. {8,10,4,6,-9} b.{-4,1,5,8) c. {-4, 8, 5,1,5} d. no domain exists I think that it is A, Am I right? Thanks
  93. MATH

    Sal's Sandwich Shop sells wraps and sandwiches as part of its lunch specials. The profit on every sandwich is $2 and the profit on every wrap is $3. Sal made a profit of $1,470 from lunch specials last month. The equation 2x + 3y = 1,470 represents Sal's
  94. math

    I'm so lost I have no idea. Please help Write the equation of the line that represents this graph. Show your work or explain how you determined the equations. graph of line going through ordered pairs (0, 300) and (450, 0)
  95. Algebra

    Among all pairs of numbers with a sum of 34, find the pair whose product is maximum. Write your answers as fractions reduced to lowest terms.
  96. MATH HELP PLEASE

    Find two points on the graph of the parabola other than the vertex and x-intercepts. k ( x ) = ( x − 1 )^(2) − 6
  97. Algebra

    A rectangular auditorium seats 1960 people. The number of seats in each row exceeds the number of rows by 9. Find the number of seats in each row. Thanks!
  98. algebra

    The ratio of the tens digit to the units digit of a two digit number is 2:3. The number that results when the digits of the original number are reversed is 27 more than the original number. Find the original number.
  99. math

    the sum of the ages of two siblings is 23 and the difference between their ages is 7. if frank is the older brother of beth, determine their ages by creating a pair of simultaneous equations and solving them. this is killing me i have been working on it
  100. Physics

    PLEASE HELP! this is do tomorrow :( I have no clue how to do any of it. A plane is flying horizontally with speed 193 m/s at a height 2010 m above the ground, when a package is dropped from the plane.The acceleration of gravity is 9.8 m/s^2. 1.What is the

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