1. Physics

    While a person is walking, his arms swing through approximately a 45° angle in .530s. As a reasonable approximation, we can assume that the arm moves with constant speed during each swing. A typical arm is 70.0 cm long, measured from the shoulder joint.
  2. Physics Help

    While a person is walking, his arms swing through approximately a 45° angle in .530s. As a reasonable approximation, we can assume that the arm moves with constant speed during each swing. A typical arm is 70.0 cm long, measured from the shoulder joint.
  3. Physics

    A 4900kg cable car goes 350m up a hill inclined 14∘ above the horizontal. What can your learn about the work done by the cable to move car up the hill? Answer quantitatively. Ignore friction.
  4. Physics

    A child rides a toboggan down a hill that descends at an angle of 26.6 degrees to the horizontal. The hill is 13.1 meters long. What is the vertical component of the child's displacement? Answer in units of meters.
  5. trigo

    two points A and B are 562 meter apart on a level stretch of road leading to a hill . the angle of elevation from A is 26degree 30minutes, and angle of elevation from B is 36degee 40minutes. how high is the hill ?
  6. physices

    A physics book slides off a horizontal table top with a speed of 1.30 m/s . It strikes the floor after a time of 0.380s . Ignore air resistance. Find the height of the table top above the floor. Find the horizontal distance from the edge of the table to
  7. physics

    (a) How high a hill can a car coast up (engine disengaged) if friction is negligible and its initial speed is 78.0 km/h? m (b) If, in actuality, a 750 kg car with an initial speed of 78.0 km/h is observed to coast up a hill to a height 12.0 m above its
  8. Physics

    Keisha throws a baseball with an initial velocity of 30 m/s at 30.0° above the horizontal. If air resistance is negligible, how long does it take for the baseball to reach the maximum height of its trajectory? Assume that the acceleration due to gravity
  9. Physics

    A major leaguer hits a baseball so that it leaves the bat at a speed of 28.0 and at an angle of 36.9 above the horizontal. You can ignore air resistance.At what two times is the baseball at a height of 9.50 above the point at which it left the bat?
  10. physics

    A baseball player throws a ball at an angle N of E from 3rd base to 1st base. if it takes 1.2 seconds to get there, at what velocity did he throw it? (bases on a baseball field are 90 feet apart) -9.8=0-27.432m/ .24
  11. physics

    A baseball has a mass of about 155 g. What is the magnitude of the momentum of a baseball thrown at a speed of 95 mph?(Note that you need to convert mass to kilograms and miles per hour to meters per second.) Answer in units of kg · m/s
  12. physics

    A baseball player throws a ball at an angle N of E from 3rd base to 1st base. if it takes 1.2 seconds to get there, at what velocity did he throw it? (bases on a baseball field are 90 feet apart) -9.8=0-27.432m/ .24
  13. Math

    If you were to sketch a circle graph for the data shown in the table bellow, about what fraction of the circle would represent a baseball? Type Number Baseball 33 Soccer 62 Football 5 Answers 1/4 1/3 1/2 (I CHOOSE THIS) 2/3 if some one can help me thanks
  14. English

    Thank you very much for correcting my sentences. Here are some more I'm doubtful about. 1) The narrator feels very nervous. A disease has caused (caused??) the acuteness of his senses. 2) He wants to prove to the reader that he is not mad. To prove his
  15. physics

    A child rides a toboggan down a hill that descends at an angle of 18.1 to the horizontal. The hill is 34.9 m long. What is the horizontal component of the child’s displacement?
  16. Angles -- Math?

    if there is a hill at an incline of 50 degrees from the horizontal..is it true that at any point on that hill a horizontal "cut" would make an angle of 50 degrees?
  17. physics

    A speed bike tops a hill at 3.5 m/s and accelerates steadily down hill reaching a speed of 11.4 m/s after 4.2 seconds. How far did the bike travel during this period?
  18. physics

    When a 1.50 kg block is 3.96 m above the base of the hill, the mass has a speed of 1.71 m/s. When the block reaches a point 0.750 m above the base of the hill, what is its kinetic energy?
  19. Physics

    I am having alot of difficulty with this problem,any help would be greatly appreciated. A baseball of mass 145 g leaves a pitcher’s hand at 96.6 mi/h (1 mi/h = 1.609km/h), but due to air resistance, it arrives at home plate 60.0 ft away (1 ft = 0.3048 m)
  20. Calculus

    What's the integral of e^(1+i)x dx? Please provide the full solution because I don't understand how to do this question at all.
  21. Vaux-le-Vicomte Statue

    The gardens of Vaux-le-Vicomte are terraced and end at a hill overlooking canals and grottos. In the center of this beautiful hill is a statue of mythological significance. Who is the subject of the statue, and what event (or feat, shall we say), does the
  22. history

    i left my book at school and in study hall i used someone's book and 4gotmy book 4 home work do you think you can help me
  23. physics

    A sled and rider have a total mass of 57.2 kg. They are on a snowy hill accelerating at 0.5g. The coefficient of kinetic friction between the sled and the snow is 0.20. What is the angle of the hill's slope measured upward from the horizontal? You may find
  24. Harcourt Trophies Practice Book

    I don't have my 5th grade harcourt trophies book with me. I need the pages 88 and 89. Is there a website I can use to print out the pages?
  25. 3 grade english

    write three sentence about whales. use present tense in one sentence, past tense in one sentence, and future tense in one sentence. my son write three sentence i want did he write correct or not 1- whale willl swim to have some krill. 2- whale leaped out
  26. Diddle....

    My teacher says that I "diddled" on last week's exam, and so he is taking away half of my points. What is "diddle?" In this case, "diddled" probably means that you wasted time or cheated on the exam. Because this word has many different meanings, please
  27. english

    I am doing a book report on the book my sister keeper i need to give a description of two characters in the book and also the page number i found it on ??
  28. English

    I am doing a reading comprehension project and I need to find a book and a song about "the elderly". Please Help!! do you mean like about old people or a book called The Elderly? about old people. about old people. hang on I'll look google Books About the
  29. Physics

    A roller coaster reaches the top of the steepest hill with a speed of 3.0 . It then descends the hill, which is at an average angle of 40 and is 50.0 long. Estimate its speed when it reaches the bottom. Assume kinetic friction (uk) = 0.18 .
  30. Physics Honors

    A soccer ball is kicked horizontally off a 22.0 meter high hill and lands a distance of 35 meters from the edge of the hill. Determine the initial horizontal velocity of the soccer ball.
  31. physics

    A motorcycle is traveling up one side of a hill and down the other side. The crest of the hill is a circular arc with a radius of 35.5 m. Determine the maximum speed that the cycle can have while moving over the crest without losing contact with the road.
  32. physics

    A roller coaster reaches the top of the steepest hill with a speed of 3.0 . It then descends the hill, which is at an average angle of 36 and is 50.0 long. Estimate its speed when it reaches the bottom. Assume friction coefficint Mk=0.18.
  33. Physics

    A roller coaster reaches the top of the steepest hill with a speed of 7.0 km/h . It then descends the hill, which is at an average angle of 44 ∘ and is 30.0 m long. Estimate its speed when it reaches the bottom. Assume μk=0.18.
  34. physics

    A motorcycle is traveling up one side of a hill and down the other side. The crest of the hill is a circular arc with a radius of 43.0 m. Determine the maximum speed that the cycle can have while moving over the crest without losing contact with the road.
  35. Algebra 1

    1. A bag contains 3 red marbles, 2 blue marbles, and 5 green marbles. What is the probability of randomly selecting a red marble then, without replacing it, randomly selecting a green marble? 2. A bag contains 5 blue marbles, 6 red marbles, and 9 green
  36. Physics

    (a) Suppose you throw a football. At some instant, when the ball is in contact with your hand, your hand exerts a force of 100 N on the ball in the +x direction. What is the force of the ball on your hand?
  37. logic

    A son and his father take a daily walk up a hill. It is 1.5 km to the top of the hill. As the father gets older he can only walk half the speed of his son. So they start together but the father trails his son. The father reaches the halfway point when the
  38. reading

    I need help writing a summary for the enders game but as of now I don't have the novel with me
  39. English

    I read this story, I need help with some questions please by Katherine Mansfield Miss Brill Although it was so brilliantly fine - the blue sky powdered with gold and great spots of light like white wine splashed over the Jardins Publiques - Miss Brill was
  40. Com 150

    Benefits and Tips for going back to college College in and of itself can be overwhelming, let alone all that goes with being in college. While you are focused on succeeding academically, there are might be many parts of your life that can keep you from
  41. Reading

    For summer reading i have to chose a fiction book, at 9th grade level or above and a global historial book (not usa) from paleolithic to 1550 AD. For global i have a list: Dance of the Tiger: a novel of the ice age Child of Morning Escape from Egypt The
  42. English

    revise the following sentence so it uses a pronoun in the objective case I took the book from Ian. a. Ian handed the book to me b. He handed the book over c. I took his book d. We exchanged books
  43. English

    A: Could you give my eye to the poor girl? B: But then you wouldn't be able to see. (What is the meaning of B? #1, #2 or #3?) 1. If I could give your eye to the poor girl, you wouldn't be able to see. 2. If I gave your eye to the poor girl, you wouldn't be
  44. physics

    skateboards on a hill time speed kinetic energy and work starting from rest angel and Brittany skateboard down a hill as shown. angel rides down the steep side while britney rides down the shallow side. Angel has more mass than Britney. assume that
  45. reference page for a report

    I wrote a report from general reference on a subject, but don't need a bibliography since I am not using anything from a book/article. Would a resource page where I found a couple of statistics be appropriate? This doesn't really make sense to me. Perhaps
  46. English

    Can you please check if it is everything right? Thank you. 1.I live in a small country village. My brother is a primary school student. 2.My parents are employees. 3.I’m a student at (of?) a technical high school with an emphasis on science. 4.I like
  47. reading

    Who is the antagonist in the book, Death Be Not Proud? Also, what type of conflict is it and what is the climax of the story? Is the climax when Johnny starts having a stiff neck and they discover he has a tumor in his brain?
  48. Reading

    In Chapter 16 of the book The Cay. How did phillip discover the Cay was recovering from the storm? I have to list 4 things for Landscape, Signial Fire, Water, Food, and Shelter
  49. Honors English 9

    What are examples of characterization in Antigone? This is a review question in a small packet that follows every book. I have no recollection of reading direct characterization and our books are taken at the end of each quiz.
  50. spanish

    can anyone help me say hi my name is Allysiah i need help i don't no how to talk in spanish
  51. Math

    Two trees in a park are 14.80 meters apart. An observer, whose eye line is 1.80 m above the ground, is standing halfway between the trees. The angles of elevation of the tops of the trees from the observer’s eye line are 17° and 23°. Determine the
  52. English

    Which of the following sentences contains a berb in the present tense? A. Jessica "enjoys" running. B. Grandma had "sent" us cookies. C. We "left" early. D. They are "walking" around the lake. Note" The verbs in the sentences are A. enjoys B. sent C. left
  53. math

    The study on calories burned per minute of walking, depending on weight, has a regression equation of ŷ = 1.0 + .06x. The predicted number of calories burned in a minute of walking for a 180 pound person is_____
  54. Earlychilodhood education

    Which one of the following is probably NOT one of the reasons that circle times fail? A. The space was large and open. B. The songs were repeated daily. C. The time period lasted too long. D. The teacher read a chapter book, hoping to encourage the
  55. English

    I urgently need to find a site where I can get a video lesson with transcript of the Holocaust. By the way, could you check these sentences I'm not sure of? 1)Robinson’s ship was stuck (wrecked) in the sand and the waves were dashing over it. There was
  56. english

    re pair the given run on sentence 1. i went to the walk-inclinic because i was feeling ill insct i had walking pneumonia answer i went to the walk-in clinic;because i was feeling ll infact i had walking pneumonia
  57. CDA

    4. Signature software systems are primarily used by A. children and providers. B. parents and children. C. parents and other authorized individuals. D. parents and providers. 5. A software program features an electronic coloring book, in which children get
  58. re

    im really struggling with this question people who agree with christianity is sexist such as feminists claim that..... ive written:- women should be treated the same as men and be allowed to become priests. Other women need a female priest to talk to if
  59. 4th grade

    I have to answer questions about Parts of a nonfiction book. example:second entry in index Where on line can I find a book that I can look in the entire book.
  60. Physics

    As you hurry to catch your flight at the local airport, you encounter a moving walkway that is 85 m long and has a speed of 2.2 m/s relative to the ground. If it takes you 68 s to cover 85 m when walking on the ground, how long will it take you to cover
  61. reading / riddle

    rene obsreves the body and files her report.her report is filed but not with the police. because many others will observe the body ,too. though the local police will not be called to ivestigate. why? Is she a med student? Is the report filed with her
  62. graduate statistics

    Does computer-assisted instruction help community college health students with reading difficulties to learn reading skills at a faster than normal rate? A researcher arranged for one of these students to have access to a set of computer-learning programs
  63. aeronautic

    Consider a hill and a ridge as illustrated in the figure below. Both the hill and ridge have a semi-circular xz cross-section of radius R, and the wind is blowing in the x direction with speed V∞. To allow sustained flight with no thermals present, a
  64. physics

    Is it true that when a baseball player hits a home run, the baseball receives a greater impulse from the bat than the bat does from the ball? My thinking is that everything should be equal so I would answer this question false-am I correct?
  65. physics

    A major leaguer hits a baseball so that it leaves the bat at a speed of 31.5 and at an angle of 36.1above the horizontal. You can ignore air resistance. At what two times is the baseball at a height of 8.00 above the point at which it left the bat?
  66. physics

    5)A ball is thrown horizontally at 10.0 m/s from the top of a hill 50.0 m high. How far from the base of the hill would the ball hit the ground? 45.0 m 6)A missile launched at a velocity of 30.0 m/s at an angle of 30.0 to the normal. What is the maximum
  67. Physics

    A roller coaster reaches the top of the steepest hill with a speed of 3.0 km/h . It then descends the hill, which is at an average angle of 40 degrees and is 50.0 m long. Estimate its speed when it reaches the bottom. Assume kinetic friction (uk) = 0.18.
  68. Physics

    A roller coaster reaches the top of the steepest hill with a speed of 3.0 km/h . It then descends the hill, which is at an average angle of 40 degrees and is 50.0 m long. Estimate its speed when it reaches the bottom. Assume kinetic friction (uk) = 0.18.
  69. algebra

    a man rides up a ski lift at the rate of 5 miles per hour and skis back down the hill at the rate of 50miles an hour. if the complete trip requires 22 minutes, how far is it from the bottom to top of the hill?
  70. trigonometry

    From the top of a hill 700 ft high an observer notes that the angles of depression of two successive markerstones on a level ground, which leads straight away from the hill are 5 degree and 15 degree respectively. Find the distance between the two
  71. trig

    From the top of a hill 700 ft. high, an observer notes that the angles of depression of two successive markerstones on a level ground, which leads straight away from the hill are 5 degree and 15 degree respectively. Find the distance between the two
  72. Physics

    youre in a friends pick up truck when it stalls on a hill. you jump out, get nehind the truck and push with all your might 300 newtons. still the truck slowly rolls back down the hill. whats the pressure the truck exerts on you.
  73. Physics

    A stuntman drives a car over the top of a hill, the cross section of which can be approximated by a circular arc of radius 250 m. What is the greatest speed at which he can drive without the car leaving the road at the top of the hill?
  74. physics

    You attempt to throw the rock across the chasm with a velocity of 35 m/s at and angle of 60 degrees above horizontal. Calculate and label the forward velocity (components) of the rock as it leaves your hand. How long will it take to reach the top of the
  75. Bassick High School

    Vivian is walking to the hairdresser's at 1.3 m/s when she glances at her watch and realizes that she is going to be late for her appointment. Vivian gradually quickens her pace at a rate of 0.090 m/s2(squared) What is Vivians speed after 10.0s? At this
  76. PLEASE CHECK! ELA

    Which choice best describes the underlined words in this sentence? Should you have been walking the dog without a leash? Underlined is: Should _____ have been walking it does not include the word "you" so I just did an under score to represent that. A-
  77. Personal narrative

    Tried to fix the errors... But really don't know what to do - does it sound better than last time- _____________________________ It was like taking that first bite into a slice of cheese pizza after a long day of work, and being Blissfully on cloud 9 at
  78. Personal narrative

    Tried to fix the errors... But really don't know what to do - does it sound better than last time- _____________________________ It was like taking that first bite into a slice of cheese pizza after a long day of work, and being Blissfully on cloud 9 at
  79. English

    After reading cat's eye by margaret Atwood, I had to write a essay. the essay required me to write an analytical essay detailing 3 events in the story where Atwood notably develops specific character traits in elaine Risley so that the reader can Identify
  80. English

    I did not know what to do. I could not afford to be seen walking with her, and I did not even want to-but on the other hand the flattery of those humble, hopeful turnings was not lost on me. A role was shaping for me I could not help playing. Which of the
  81. Math

    Which is the best buy? (1 point) a. 16 ounces of hand soap for $2.40 b. 20 ounces of hand soap for $2.80 c. 24 ounces of hand soap for $3.00***??? d. 12 ounces of hand soap for $2.00 Check my answer pls
  82. Math

    into the​ air, and its height h in feet after t seconds is given by h left parenthesis t right parenthesis equals negative 16 t squared plus 96 t plus 3h(t)=−16t2+96t+3. ​(a) What is the height of the baseball when it is​ hit?
  83. Engish

    Despite brawls caused by drunken fans, it is virtually impossible to eliminate alcohol from baseball stadiums. A major reason is that the key sponsors of baseball games are beer manufacturers such as Coors, Miller, and Busch. This is a Cause and Effect is
  84. Language arts

    I am trying to assist my fourth grader in writing her first book report. It is based off of a mystery book. I have looked everywhere for a basic guildline for her so that I can give her an idea of what to do without doing it for her.Can anyone please guide
  85. geometry

    Find the values that make this a parallelogram? The parallelogram is a square ans the values are: on the outside of it is 17 y and 8y on the top and on the bottom it is 10 and 8x On the inside of the square it is (3y-20) on the left hand corner and on the
  86. Calculus 1

    Francis starts walking north at 4 ft/s from an intersection I. At the same time Aram starts walking south at a rate of 5 ft/s from a intersection 1500 ft due east of I. At what rate are they moving apart 15 minutes later? (Rounding to 1 decimal place is
  87. English

    I want some of you to come up here and talk about your/their worries to your classmates. The other students should give some tips on the problems/worries/matters. Then they/you should add the expression "Everything will be okay." After that the student who
  88. reading

    While out walking one night, a dog met a poor hungry wolf. The dog invited the wolf home to see of maybe his master had a job for a wolf. Along the way the wolf noticed the dog's neck had a mark and asked what it was. The dog told the wolf that he wore a
  89. English

    There is a safe in the room. You have to keep the door open. I will take some amount of money to you. Keep the money hidden in the safe. Let's keep it a secret. Don't let others know that there is money in the safe. There was a doorbell ring. He was late
  90. Physic: Projectile Motion

    Two rifles are fired at targets, which are 100 m away. The first rifle fires bullets at 1200 ft/s and the second fires a bullet at 3000 ft/s. How long will it take each bullet to get to the target? If both are aimed directly at the bull's-eye, how far will
  91. chemistry

    How is overall molecular polarity affected by molecular symmetry (specifically shown for alkenes in book)? And what are the consequences for melting and boiling points (in cases of high molecular symmetry versus low molecular symmetry)? I looked for help
  92. English

    Which of the following contains a noun clause? A. Louis did not know Jocie could not swim. B. Since last August we have not seen a drop of rain.<<< C. Raccoons, commonly considered a pest, are very intelligent animals. D. The book that Finn is
  93. english

    i am reading a book called to kill mockingbird chapters 1 & 2 so like we have to do a crossword puzzle and i need help with 6 questions. so 1. scout 2.accept as true 3.to satisfy or appease 4.lack discretion; unwise 5. suffering from heat 6.sisfied
  94. English

    9. Four Seasons in One Day? READ AND LEARN Tony : Hello, may I speak to Mr. Smith? Miss Ford : Who's calling, please? Tony : This is Tony. I'm Mr. Smith's son. Miss Ford : Oh, hello. Hold on a second. Mr. Smith : Hi, Tony. What time is it in Korea? Tony :
  95. physics

    A compact disc spins at 2.8 revolutions per second. An ant is walking on the CD and finds that it just begins to slide off the CD when it reaches a point 3.1 cm from the CD's center. (a) What is the coefficient of friction between the ant and the CD? I
  96. Chemistry Lab Work Help!

    We used a buret today, and I don't get how to calculate volume. I have an initial reading of 49.97 and a final buret reading of 30.49. How do I get the volume? I thought I just subtracted the final from the initial, but someone said their tutor told them
  97. maths

    A rain water tank is half full. After it rained the tank if four fifths full. - Find the amount of water collected as a fraction of a full tank.
  98. english

    im in college and i need to know what are genres and can you give me a few sentences to use in how my reading has influences my writing and give me some design texts to my writing skills. i read recently in a magazine on credit , relationships,mental
  99. science

    in this section of the lab report you are given an opportunity to explain any results you received which are different that expected. SOme of the discreptancies are due to carelessnesss, reading instructions incorectly, porrobservation, basically they all
  100. biomechanics

    A cyclist is coasting up a hill. At t=0, the cyclist has a velocity of 14.27 m/s. If the acceleration of the cyclist is constant at -1.67 m/s2, how long will it take the cyclist to come to a complete stop? If the peak of the hill is 40 m away from the