1. Physics

    A 930 kg sports car collides into the rear end of a 2500 kg SUV stopped at a red light. The bumpers lock, the brakes are locked, and the two cars skid forward 2.6 m before stopping. The police officer, knowing that the coefficient of kinetic friction between tires and road is ...
  2. English

    The book for this is The Giver. Please check my answers. Which of the following passages from the novel support the idea that the Giver is a heroic character? A. I do know that I sat here numb with horror. Wretched with helplessness. B. "Be quiet Jonas," The Giver commanded in...
  3. English

    1.Read the following Papago song. Identify the purpose. No talking, no talking. The snow is falling. And the wind seems to be blowing backwards. A. To inform B. To persuade C. To analyze D. To express 2.which of the following statements about early American and Colonial ...
  4. History

    1. Why is Lincoln giving a speech at Gettysburg? A.To declare the Confederacy an outlaw nation B.To declare that to goal of the Union is to abolish slavery C.To dedicate a national cemetery for Union and Confederate dead D.To try Confederate soldiers for treason A? 2.When ...
  5. Poem Help Needed

    This is a poem by John Berryman that I am supposed to analyze and I am completely confused by. If anyone has any observations or ideas about the main idea of the poem, PLEASE help me out! "The Traveller" They pointed me out on the highway, and they said 'That man has a curious...
  6. english

    95. Students could learn grammatical structures from a song because A:it contains authentic language. B:rhythm and melody make the structure memorable. C: learning in this way is a pleasant change of pace. D: all of the above. answer: D 96. In a grammar lesson, a teacher used ...
  7. Novel

    I've been brainstorming about the idea that Guru gave about the novel and here's what I have of the summary so far. I can't think of an ending for it though like a conclusion or even how she finds out that it's the crow. help please! Credits to GuruBlue from Jiskha Summary: ...
  8. english

    Writing terms. Fill in the blanks. 1-final 9-topic 2-prewiting 10-introduction 3-idea 11-homonyms 4-conclusion 12-transition 5-voice 13-rough drapht 6-conventions 14-antonyms 7-persuasive 15-synonyms 8-organization -the( )writing trait judges your ability to divide your essay ...
  9. physics

    hi i have a physics question i don't understand here is the question A sample of blood is placed in a centrifuge of radius 15 cm. the mass of the corpuscle is 3.0*10^-16 kg, and the magnitude of the force required to make it settle out of the plasma is 4.0X10^-11 N. At how ...
  10. history

    The Progressive Movement has been characterized as a movement that brought a sense of justice and morality to the American political scene between 1890 and 1917. Other historians say that although well-intentioned, in the end they failed to achieve their goals. Your task is to...
  11. Physics- Circuits Current & Voltage Problem

    Please find this question onto y a h o o s e a r c h e n g i n e b y c o p y & p a s t e. Determine... (a) the current in each resistor (Indicate the direction of the current flow through each resistor through the sign of your answer. Take upward current flow as positive.) (b...
  12. physics conclusion

    im not quite sure what to write for my conclusion for this physics experiment. The aim is to record measurements and carry out calulations with the correct number of figures. We had to take a brass rod and measure its width with vernier calipers which was 19.0 mm and its ...
  13. Physics-Please check if I did this correctly

    I posted this question this morning but I'm not sure of the response Damon provided. I did it once but then I updated it later in this at the bottom- please check booth of my answers. If you were in a rotor style ride and the riders accelerate until the speed of ride is ...
  14. Physics

    These are “plug-in-the-number” tasks to familiarize you with the main formulas that link the physics concepts of this chapter. They are one-step substitutions, much less challenging than the Think and Solve problems that follow. Average speed ! total distance covered ...
  15. Science: Physics

    A physics teacher shoots a .30 caliber rifle at a 0.47 kg block of wood. The rifle and wood are mounted on separate carts that sit atop an air track (like a linear air hockey table--ie. frictionless). The 5.7 kg rifle fires a 27 gram bullet at 227 m/s in the positive direction...
  16. History

    Which explains why the Compromise of 1850 intensified the argument about slavery? A- People for and against slavery migrated to Western stats to influence laws. B~Free states in the West added more antislavery votes to Congress. C~The equal division of slave and free ...
  17. English

    As promised, I just included the first five sentences I wasn't sure of. 1) One day he got to the beach and saw it was covered with human bones. He realized that cannibals had eaten men on his island. He believed that cannibals ate other men because they thought it was natural...
  18. Physics

    A plutonium- 239 nucleus initially at rest undergoes alpha decay to produce a uranium-235 nucleus. The uranium-235 nucleus has a mass of 3.90 x 10^-25 kg and moves away with a speed of 2.62 x 10^5 m/s. Determine the minimum wage electric potential difference that is required ...
  19. Physics

    The spring shown in the figure is compressed 59cm and used to launch a 100 kg physics student. The track is frictionless until it starts up the incline. The student's coefficient of kinetic friction on the 30∘ incline is 0.14 . k= 80,000 N/m m=100 kg uk= .14 DeltaX= 59 ...
  20. German

    I am not doing to good in my German class and I was wondering if anyone knew of a way I could learn outside of school? Maybe a site that teaches the basics? Or maybe someone on here that is willing to help? I really have no clue on how I can get some help, only like three ...
  21. Algebra

    I think that the goal is to get rid of the 5th root in this case. I know that I have to make whatever is under or in the root -in this case the number is X equal some number to the fifth power. I am supposed to use the rule a^(m/n)= n (the n-root) (don't know how to type it) ...
  22. Maths

    - In a normal pack of cards, write down the odds against picking each card. a) a diamond b) a jack c) a red 10 d) a black picture card e) a picture card 1. A die is rolled 3 times. Estimate the chance of 2 or 3 no.'s being the same. Find the probability that i) the three nos ...
  23. Intro to LAN

    I have an assignment. here is the criteria All key elements of the assignment are covered in a substantive way. · Select one organization from the company descriptions in Appendix G · Recommend how the company should back up and protect their network data. · Recommend the ...
  24. Novel [repost]

    I've been brainstorming about the idea that Guru gave about the novel and here's what I have of the summary so far. I can't think of an ending for it though like a conclusion or even how she finds out that it's the crow. help please! Credits to GuruBlue from Jiskha Summary: ...
  25. mathematics

    A book seller purchased 117 books out of which 45 books of mathematics and 72 books of physics.Each book has same size .Mathematics and Physics books are to be packed in bundles and each bundle must contain same no. of books.Find the least number of bundles which can be made ...
  26. Help!Microeconomics

    Central Crude Oil is a crude oil monopoly in a market. The following table shows the liner demand schedule of this firm which cannot apply price discrimination. The firm's fixed cost is $2000 per month and its marginal cost is a constant of $20 per thousand of cubic feet. ...
  27. science

    I did this experiment and I found these validity issues: they never specified if temperature to be measured in celcius or faren., they never mentioned that the buckets were to be the same, stirring until your arms get tired is not a good idea, but I need three more validity ...
  28. science

    I did this experiment and I found these validity issues: they never specified if temperature to be measured in celcius or faren., they never mentioned that the buckets were to be the same, stirring until your arms get tired is not a good idea, but I need three more validity ...
  29. Physics

    The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. (a) Assuming the earth is a sphere with a radius of 6.38 106 m, determine the speed of a person situated at the equator. (b) What ...
  30. Physics!!!!

    3. You push your physics book 1.50 m along a horizontal table- top with a horizontal push of 2.40 N while the opposing force of friction is 0.600 N. How much work does each of the following forces do on the book: (a) your 2.40-N push, (b) the friction force, (c) the normal ...
  31. math

    In a class of 50 student, 25 offer mathematics, 22 offer physcis, 30 offer chemistry and all the student take at least one of these subjects , 10 offer physics and mathematics, 8 offer chemistry and mathematics , 16 offer physics and chemistry. (a) draw a venn diagram to ...
  32. Physics

    A hockey puck of mass m = 70 g is attached to a string that passes through a hole in the center of a table, as shown in the figure below. The hockey puck moves in a circle of radius r = 1.20 m. Tied to the other end of the string, and hanging vertically beneath the table, is a...
  33. Economics

    6. The idea that countries should produce and sell goods that they produce most effectively and efficiently, and buy goods that other countries produce most effectively and efficiently, is known as A. absolute advantage theory. C. efficiency balanced trade. B. free trade. D. ...
  34. Physics (my last problem)

    A 3.4 kg ogject to the right at 3.5 m/s hits a stationary object of mass 2.7 kg. After the collision the 2.7 kg object moves to the right at 1.8 m/s. A) What is the final verlocity of the 3.4 kg object? B) What is the total kinetic energy og the objects before the collision? C...
  35. English

    I still have some doubts about a summary I made of Macbeth's plot. I hope you can have a look at it, too. I included various alternatives. Please, tell me if they are all possible. 1)The play opens with the news that Macbeth has succeeded in defending Scotland from an invasion...
  36. physics

    The flywheel of a steam engine runs with a constant angular speed of 164 rev/min. When steam is shut off, the friction of the bearings and the air brings the wheel to rest in 1.6 h. I figured out the constant angular acceleration=1.71 rev/min2 but im not sure how to find:What ...
  37. physics

    In a physics lab, students are asked to predict how the acceleration of the block sliding up a ramp compares to the acceleration down the ramp compares to the acceleration down the ramp. The block slides up a somewhat rough surface inclined at an angle of theta above the ...
  38. U.S. History

    Text 3: Excerpt from “All in the Day’s Work: An Autobiography” by Ida M. Tarbell I had been disturbed for some time by what seemed to me the calculated belittling of the past achievements of women by many active in the campaign for suffrage. They agreed with their ...
  39. Physics - HELP! PLEASE

    The problem is from fundamentals of physics 9th edition by halliday. Here is a free download of the book since I couldn't post the graph (I had to write out link since site doesn't allow links to be posted): tripplew period sendspace period com/file/shrz0x I am having trouble ...
  40. Physics

    You are at standing at a window in the University tower that is 42.0 meter above the ground. Your physics professor (who is 2.12 m tall) is walking on the ground below, approaching to tower at a speed of 1.12 m/s. You are holding an egg, which you would like to drop on your ...
  41. physics

    Often in physics we won't be able to predict motion of a bunch of objects exactly and so we resort to statistical methods. An example of a statistical approach is the resulting profile of a bunch of disks dropped through a series of pegs. As each disk falls it encounters pegs ...
  42. History

    Word box : Mercantilism Religious Freedom Magna Carta English Bill of Rights Mayflower Compact Fundamental Orders of Conneticut Virginia House of Burgesses Navigation Acts 1. 1689 law that reinforced the idea of no taxation without representation and the right to petition the ...
  43. math riddle

    Estimate a population: To study a species of fox, a team captures and tags 25 foxes from a large forest and then releases them. The following week they capture 15 foxes and find 5 are tagged. Estimate the number of foxes in the forest. This is a proportion problem. We know ...
  44. english/8

    Writing terms. Fill in the blanks. 1-final 9-topic 2-prewiting 10-introduction 3-idea 11-homonyms 4-conclusion 12-transition 5-voice 13-rough drapht 6-conventions 14-antonyms 7-persuasive 15-synonyms 8-organization -the( )writing trait judges your ability to divide your essay ...
  45. physics

    john and paul are trying to move a 100kg piano which is resulting on a flat, smooth floor. John pushing towards the North, while Paul is pushing towards the East. Both are exerting a 100N force. What is acceleration of the piano (magnitude and direction)? A=200/100=2m/s^2 ...
  46. Physics

    an 80 kg physics student is riding the cajun cliffhanger. this ride had a diameter of 8.0m (u:0.06)the ride produces enough centripetal force to suspend a student. 1.what is the force of friction to keep the student suspended? 2.what normal force is required to generate the ...
  47. english

    Fix the underlined part in the sentence. This was an important question to Americans in the eighteen century. When they were ruled by Great Britain, and it is an important question today when countries find themselves controlled by more powerful outsiders. underlined part: ...
  48. Check my physics

    Would you mind checking one of my problems from my physics study guide? I know the answer and just want to make sure I am using the right formula. :) A 78-kg skydiver has a speed of 62 m/s at an altitude of 870 m above the ground. a. Determine the kinetic energy possessed by ...
  49. Physics

    Hi, I've been having trouble with this physics problem. I'm not sure where to begin. A brick with mass m1=2.5 kg can move without friction on a horizontal plane. The brick is attached to a wall by an ideal spring with spring constant k=2300 N/m. A second brick with mass m2=1.2...
  50. Physics

    A block of mass 20g sits at rest on a plate that is at the top of the fluid on one side of a u-tube as shown in figure P10.38. The u tube contains two different fluids with densities p1= 1000 kg/m^3 and p2= 600 kg/m^3 and has a cross sectional area of A= 5.0 x10^-4 m^2. If the...
  51. Physics

    A spring has a spring constant that is 120 N/m, and has a 0.1 kg block attached to it. The spring and mass sit on a horizontal surface that has no friction. The block is pulled 0.2 m and then released. Please find the frequency of the oscillations, the period of the ...
  52. physics

    If a 80 lightbulb emits 4.0 of the input energy as visible light (average wavelength 550 ) uniformly in all directions, estimate how many photons per second of visible light will strike the pupil (4.0 diameter) of the eye of an observer 3.0 away. 1. I found the energy of ...
  53. Physics -- Repost

    Homework Help Forum: Physics Posted by Sandra on Sunday, February 28, 2010 at 10:20am. Thank you for answering my previous questions! I have another one now in regards to the following question... An unknown potential difference exists between the inner and outer surfaces of ...
  54. physics

    One student is pushing on a chair with a force of 260.6 N directed at an angle of 30 degrees above horizontal while a second student pushes on the same side of the chair with a force of 21.0 N at an angle of 15 degrees below horizontal. What is the magnitude, in N, of the sum ...
  55. physics

    A 25-kg bullet traveling shoots into a physics textbook that is 3.5 cm wide, and exits the textbook traveling 40 m/s. Poor defenseless textbook! (A) What was the magnitude of the average deceleration of the bullet while it was penetrating through the textbook? (B) What was the...
  56. Physics

    Hello can someone please help me with this physics question and show the work so I can understand? A box at the top of a rough incline possesses 981 joules more gravitational potential energy than it does at the bottom. As the box slides to the bottom of the incline, 245 ...
  57. Science - Chemistry

    1. Dalton's idea that atoms cannot be divided into smaller parts was disproved by the discovery of the ____. 2. The description of the structure of the atom is called the ___. 3. In a water molecule, two atoms of hydrogen and one atom of oxygen share electrons. A _____ bond is...
  58. College Physics

    One last physics problem left: Peggy drives from City A to City B in 50 minutes. City A is 75.1km from City O in a direction of 25degrees west of south. City B is 23.9km from City O in a direction of 20degrees south of west. Using City O as your origin, find (a) the ...
  59. Physics

    A child pushes a toy box 4.0 m along the floor with a force of 6.00 N directed downward at an angle 37.0 degrees to the horizontal. (a)How much work does the child do? (b)Would you expect more or less work to be done if the child pulled upward at the same angle? try asking for...
  60. government

    Which statement BEST describes the philosophy of Sir Robert Filmer? A. Kings derive their power from the consent of their subjects. B. Kings have a divine right to absolute authority over their subjects. C. Government’s principle duty is to protect the individual rights of ...
  61. English

    1. When MacNeil asks, "When before human history has so much humanity collectivity surrendered so much of its leisure to one toy, one mass diversion?" What is this persuasive technique called? A. repetition B. Generalization C. a rhetorical question D. a controversial question...
  62. physics

    Astronomers determine masses of distant objects by observing their smaller companions. For example, they can measure the period of a planet orbiting around a distant star, measure the radius of its circular orbit, and then employ Newtonian physics to determine the mass of the ...
  63. physics

    Astronomers determine masses of distant objects by observing their smaller companions. For example, they can measure the period of a planet orbiting around a distant star, measure the radius of its circular orbit, and then employ Newtonian physics to determine the mass of the ...
  64. U.S History - Need help!!!

    Document A- It is a most unhappy question, awakening sectional feelings, and exasperating them to the highest degree. The words, civil war, and disunion, are uttered almost without emotion. –Gentlemen now have an opportunity of putting their principles into practice. If they...
  65. Physics

    posted this question this morning but I'm not sure of the response Damon provided. I did it once but then I updated it later in this at the bottom- please check booth of my answers. If you were in a rotor style ride and the riders accelerate until the speed of ride is reached...
  66. statistics

    Leslie took two midterm exams and earned the following scores: 82 on the chemistry exam (class distribution: μ = 75, σ = 6.25) and 63 on the physics exam (class distribution: μ = 59, σ = 3.57). Rounding to two decimal points, on which exam should Leslie get...
  67. Language

    assage from"Life Without Gravity" by Robert Zimmerman In space, the much weaker gravity makes the human body change in many unexpected ways. In microgravity, your blood is rerouted, flowing from the legs, which become thin and sticklike, to the head, which swells up. The extra...
  68. Physics please check

    The "karat" is a dimensionless unit that is used to indicate the proportion of gold in a gold-containing alloy. An alloy that is one karat gold contains a weight of pure gold that is one part in twenty-four. What is the volume of gold in a 20.0 karat gold necklace whose weight...
  69. Religion help

    I am working on a powerpoint presentation. which requires of me to presented to a 9yr old kid which explains judaism to them with appropirate slides for them and speaker notes.this is my first time working with this religion and powerpoint can someone help me edit my work....
  70. French Cuisine (Check)

    Can someone check my work? The evolution of French cooking has seen many different changes, where French Medieval cuisine involved great preparation and presentation. Sauces at this time were thick and full of seasonings. The French cooked very ornate and lavish food that was ...
  71. accounting

    The directors of Health Food Alliance Ltd have recently reviewed their legal financial reporting obligations to shareholders and are completely satisfied that the company’s financial reports meet all the required accounting standards. However, they are aware that many ...
  72. accounting

    The directors of Health Food Alliance Ltd have recently reviewed their legal financial reporting obligations to shareholders and are completely satisfied that the company’s financial reports meet all the required accounting standards. However, they are aware that many ...
  73. Physics

    For a physics lab involving watchnig a gldier move down an air track with uniform acceleration, and recording the results in a table then graphing the results,do I include that "Observations were held and results were recorded in a table. Two graphs, one position-time and one ...
  74. Physics - Frequency

    This is in reply to a previous post, I'm not really sure whether replies to posts that are several days old are viewed by anyone, so I'm reposting just in case. In reply to bobpursley's post, I just want to ask, how would you know how long it takes for the sound to reach you? ...
  75. Social studies?

    Please ignore my previous post. I prematurely hit the enter key. I've been watching this board all day, waiting for someone to answer my physics question (no one has yet. sigh.) I just have to say Ms. Sue is my hero. She consistently answers almost every student's questions, ...
  76. Physics

    A student gets his car stuck in a snow drift. Not at a loss, having studied physics, he attaches one end of a stout rope to the vehicle and the other end to the trunk of a nearby tree, allowing for a small amount of slack. The student then exerts a force vector F on the center...
  77. College physics - Center of mass

    College Physics- Center of Mass? The objects in the figure below are constructed of uniform wire bent into the shapes shown (Figure 1) . Each peice has a length of 0.15 . There are two objects that we need to figure out the x- and y-coordinates of the center of mass of the ...
  78. physics

    home / study / science / physics / questions and answers / a block of mass 3kg s sliding along the frictionless ... Question A block of mass 3kg s sliding along the frictionless horizontal surface with a speed of 2m/s. 1. What is the kinetic energy of the block? 2. A wedge is ...
  79. Math

    The warehouse manager on a construction site is trying to figure out a rational way to control inventory and has asked for your help. There are a number of parts that have roughly the same characteristics relative to consumption and size (key when determining inventory control...
  80. College Physics**

    A student goes to planet x and wants to determine the gravity there. The student knows from physics lab that they can use Atwood's machine to determine gravity. The student places a 100g mass and a 110g mass at the end of a string and hangs it over a pulley. The student places...
  81. physics bobpursly help still having trouble

    A satellite in a circular orbit around earth with a radius 1.019 times the mean radius of the earth is hit by an incoming meteorite. A large fragment m=60 kg is ejected in the backwards direction so that it is stationary with respect to the earth and falls directly to the ...
  82. History

    Ms. Sue please help! 3. Read the passage and answer the question that follows: Many slaves preferred not to escape their horrible lives on plantations because their families were often with them. Despite the fact that slaves had no rights, they often found ways to sabotage the...
  83. Physics

    please tell me where I went wrong. A proton is moving parallel to a uniform electric field. The electric field accelerates the proton and increases its linear momentum to 5.0x 10^-23 kg m/s from 1.4x 10^-23 kg m/s in a time of 6.5x 10^-6 s. What is the magnitude of the ...
  84. Physics

    Suppose you’re eating in a restaurant where the dishes are shared at the table and all placed uniformly on a rotating disk-like surface. Model this surface as a thin disk of radius 33.4 cm. You can’t stop thinking about physics even though you’re out with your friends, ...
  85. PHYSICS!!

    It is 5.0 km from your home to the Physics lab and your car is out of gas. You could run that distance at 10 km/h, which uses up energy at the rate of 700 W; or you could walk it leisurely at 3.0 km/h, which uses energy at 300 W. (a) Calculate how much energy both choices ...
  86. PHYSICS!!!!

    It is 5.0 km from your home to the Physics lab and your car is out of gas. You could run that distance at 10 km/h, which uses up energy at the rate of 700 W; or you could walk it leisurely at 3.0 km/h, which uses energy at 300 W. (a) Calculate how much energy both choices ...
  87. Physics

    Your 2.85kg physics book rests on a horizontal tabletop. A. Find the normal force on the book. B. Suppose you pull up on the book with a 15.0N force, now what's the normal force? C. Suppose you push down on the book 15.0N Force now what's the normal force?
  88. Physics

    B)In physics (and in all science) standard units are used to ensure measurement uniformity. Which of the following fictitious units of measurement could not be considered a standard unit? 1) The grimph: a distance unit equal to exactly 4 meters. 2) The nicket: a time unit ...
  89. MATHS PLEASE HELP ME

    Can anyone help me on these? i have no idea how to solve it. Thanks alot! 1)On a soccer team three fullbacks can play any of the three fullback positions, left, center, and right. The three halfbacks can play any of the three halfback positions, the four forwards can play any ...
  90. PHYSICS!!!

    The Venturi tube shown in the figure below may be used as a fluid flowmeter. Suppose the device is used at a service station to measure the flow rate of gasoline (ñ = 7.00 102 kg/m3) through a hose having an outlet radius of 2.72 cm. The difference in pressure is measured to ...
  91. Poetry meaning question..

    Hiya, I need some help for a poetry essay I have to write. Can you tell me what the line "darkness beneath nights darkness had freed, that rose slowly towards me, watching" might mean? I have no idea. What is the context of this? What is the title of the poem? The name of the ...
  92. Ethics

    I need help in understanding what the viewpoint would be of a virtue ethicist in deciding who should receive a liver transplant. There are 5 candidates: Bob- is 40 years old unemployed, homeless with a severe drinking problem and a criminal record.He was the first to sign up ...
  93. Physics/chem

    Trying to beat the heat of summer, a physics grad student went to the local toy store and purchased a child's plastic swimming pool. Upon returning home, he filled it with 154 liters of water at 25°C. Realizing that the water would probably not be cool enough, he threw ice ...
  94. physics

    Hi I did a physics lab where we hung one spring with several different masses and found its K value, then hung another spring with several different masses and found its K value, then we joined both the springs together and hung several masses on it, and then found the K value...
  95. Science

    2. Your friend John complains about his poor grades. You go to his house to study one day. The only place John has to study is at the kitchen table. While you are there, his younger brothers run through the kitchen screaming over and over again. What advice would you give John...
  96. Science

    2. Your friend John complains about his poor grades. You go to his house to study one day. The only place John has to study is at the kitchen table. While you are there, his younger brothers run through the kitchen screaming over and over again. What advice would you give John...
  97. Physics

    Augustine continues to run around. He gets to the park and has the overwhelming urge to jump off a cliff and try to fly. He does so at an angle of 50 degrees to the horizontal while running at 14.5m/s. With his arms flapping, he rises in the air. a) what is the highest point ...
  98. Physics

    Augustine continues to run around. He gets to the park and has the overwhelming urge to jump off a cliff and try to fly. He does so at an angle of 50 degrees to the horizontal while running at 14.5m/s. With his arms flapping, he rises in the air. a) what is the highest point ...
  99. physics

    Physics Genius! please let me! Three objects lie in the x, y plane. Each rotates about the z axis with an angular speed of 6.12 rad/s. The mass m of each object and its perpendicular distance r from the z axis are as follows: (1) m1 = 6.36 kg and r1 = 2.20 m, (2) m2 = 3.92 kg ...
  100. Physics

    A 17.0 kg monkey hangs from a cord suspended from the ceiling of an elevator. The cord can withstand a tension of 220N and breaks as the elevator accelerates. What was the elevator's minimum acceleration (magnintude and direction)? Please show me how to do this in addition to ...
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