Questions Asked on
November 12, 2010

  1. chem

    A 2.241 g sample of nickel reacts with oxygen to form 2.852 g of the metal oxide. Calculate the empirical formula of the oxide. 1)NiO Give the number of moles of each element to support you answer. moles of Ni 2) 1.339 mol moles of O 3)1.34 mol I know #1

    asked by hannah
  2. Math

    Find the maximum area of a triangle formed in the first quadrant by the x-axis, y-axis, and a tangent line to the graph of y = (x+1)^-2

    asked by Javier
  3. Physics

    Can height be negative?

    asked by Michael
  4. Finance

    Would you be willing to pay $500 today in exchange for $10,000 in 30 years?

    asked by Angela
  5. Geometry

    m∠1 = 6x and m∠3 = 120. Find the value of x for p to be parallel to q. The diagram is not to scale. *114 *126 *120 *20 Find the values of x, y, and z. The diagram is not to scale. (38*, 56*,19*,x*,z*,y*) *x = 86, y = 94, z = 67 *x = 67, y = 86, z = 94

    asked by Anonymous
  6. physics

    A block of mass 12.0 kg slides from rest down a frictionless 35.0° incline and is stopped by a strong spring with k = 1.50 104 N/m. The block slides 3.00 m from the point of release to the point where it comes to rest against the spring. When the block

    asked by beth
  7. math

    Sam and markus are standing on level ground 100m apart. A large tree is due north of markus and on a bearing of 65degrees from sam. The top of the tree appears at an angle of elevation of 25degrees to sam and 15degrees to markus. Find the height of the

    asked by putri
  8. english

    rewrite this. Do you know what history is Here is one answer it is everything humans have done and thought here is a more specific answer History is the first story of events it is the story of nations and persons how people began writing is a part of

    asked by Tom.H
  9. physics

    A 120 kg crate on a flatbed truck is moving at 1.5 m/s2 for 65 m. What is the total work done on the crate if it's sitting horizontally at an angle of 0 degrees?

    asked by rtretr
  10. science

    1. Which combining form means “ear”? A. ONC/O C. OT/O B. OPT/O D. ORTH/O 2. Which group of words describes a condition that results from aging? A. Presbyopia C. Muscle tone B. Articulation D. Astigmatism 3. The most complicated part of the brain is the

    asked by muse
  11. history

    what was the cause of the sand creek massacre?

    asked by cierra
  12. Calculus

    fter a foreign substance is introduced into the blood, the rate at which antibodies are made is modeled by f(t) = 27 t/8 t^2 + 3 where f(t) is in thousands of antibodies per minute, and t is measured in minutes with 0 ≤ t ≤ 60. Assuming that there are

    asked by Erika
  13. math gr.6

    How to find the arm strides of 5 people? What is the median arm span? What is the median stride? I know that arm span is almost equal to the height. Please, help. Thank you.

    asked by Anonymous
  14. Geography

    Multiple select These cultural characteristics indicate the influence of the early colonists in Latin American. 1) Spanish is the official language of most countries. 2) Roman Catholicism is the most widely practiced religion. 3) Native Americans speak

    asked by Jon
  15. AP Physics

    A husband and wife take turns pulling their child in a wagon along a horizontal sidewalk. Each exerts a constant force and pulls the wagon through the same displacement. They do the same amount of work, but the husband's pulling force is directed 50°

    asked by Abagail
  16. physical chemistry

    For the process CH4(g) = C(s) + 2H2(g) A reaction is started in a rigid vessel at 1000 K with 1 mole of methane and 1 mole of hydrogen gas at 10 bar. Use table C.3 from your text to determine how many grams of carbon should be formed after the reaction has

    asked by patrick
  17. US History

    5. When a government lifted price controls after the war, prices a. remained about the same b. rose faster than wages c. fell to prewar levels d. required government support Can't decide between A and B... 6. Which of the following contributed to the

    asked by mysterychicken
  18. science

    18. Which of the following best describes the overall function of hormones? A. To control physiological processes in the body B. To provide a pathway for nerve messages C. To stimulate the growth and maturation of body organs D. To determine masculine or

    asked by Reds
  19. Algerbra

    f(x)=4x^2+7x-5 and g(x)=-9x^2+3x-14

    asked by Phil
  20. Linear EQUATIONS

    Need help! Graph the equation and identify the y intercept. Y = 1/5 x THANK YOU!

    asked by Jessica
  21. chemistry

    CoCl3(aq) + K2S(aq) yield Co2S3(s) + KCl(aq) How many moles of KCl would be produced when 0.470 moles of Co2S3 are produced in the above unbalanced reaction? How many moles of K2S would be required to react with 0.940 moles of CoCl3? How many moles of K2S

    asked by sarah
  22. AP chemistry

    For the following electronic transitions in the hydrogen atom, calculate the energy, frequency, and wavelength of the associated radiation. From n = 3 to n = 6. From n = 9 to n = 3. From n = 7 to n = 4.

    asked by Alex
  23. US History

    18. For what consumer item did Robert de Graff create a vast new market? a. zippers b. movies c. paperback books d. trucks C? 21. Why did a number of nations join to form NATO in 1949? a. to solve postwar problems as an agency of the United Nations b. to

    asked by mysterychicken
  24. Math: Calculus

    Estimate the area under the graph of f(x)=x^2+2x from x = 4 to x = 10 using 3 approximating rectangles and left endpoints. I got 290.25 as my answer but it's wrong. Would someone explain to me how to answer this question.

    asked by REALLY NEED HELP!!!!

    lim(x-1)(2x+3) x-->3

    asked by gen
  26. physics

    Maria throws an apple vertically upward from a height of 1.2 m with an initial velocity of +2.7 m/s. Will the apple reach a friend in a tree house 4.8 m above the ground? the tree house 2. No, the apple will reach 1.40733 m below the tree house 3. No, the

    asked by helpless
  27. Algebra I

    Hi, I would like someone to explain to me the process to get to the answer of these questions. (The answers are in the back of the book, but I don't understand how to get them myself): QUESTION ONE Warren has 40 coins (all nickels, dimes, and quarters)

    asked by A
  28. Physics

    A cylinder with a piston is filled with ideal gas. The gas temperature is held at 450 K. The cylinder is heated by an oven through a square metal rod connected between the oven and the cylinder. The rod has sides d = 2 cm and length L = 2.3 m. (a) If the

    asked by Need Help
  29. science

    I need to write an essay on the topic[prompt] Do you think all children should have to be vaccinated against serious disease before they are allowed to enter school? I can't seem to find many helpful sites.. I tend to not believe in all vaccines, just a

    asked by Jarrad
  30. college

    A dog bites a large chunk of flesh from a man's leg. The large, open wound will likely heal by the process of?

    asked by Lisa
  31. Physics

    Beatrice throws the 1st calculator straight up from the edge of the roof of a building. She drops a 2nd calculator off the side of the building 2 seconds after she has thrown the first one. If the height of the building is 40m, what must the initial

    asked by Heidi
  32. chemistry

    If 3.50 kJ of heat is needed to raise the temperature of a sample of metal from 10.°C to 30.°C, how many kilojoules of heat will be required to raise the temperature of the same sample of metal from 31°C to 54°C?

    asked by Delaney kidd
  33. Physics

    With the energy needed to warm up some amount of water from 40C to 64C, how high could you lift it?

    asked by lisa
  34. Biology

    The polymerase chain reaction (PCR) is useful for: A) making many copies of a small amount of DNA B) creating recombinant plasmids C) analyzing a person’s fingerprints D) cutting DNA into many small pieces E) allowing restriction enzymes to cut DNA at

    asked by stelle
  35. Health

    Can a couple get Chlamydia within their selfs?

    asked by sara h.
  36. 9th grade

    What is a parent function?

    asked by Sami
  37. physics

    An RC circuit contains a 3.9 kΩ resistor and a 5 µF capacitor. When the switch is first closed in the circuit, a maximum current of 1.5 mA flows in the circuit. Using Equation (1), find the time at which the current flow will have fallen to 1.0 mA.

    asked by san juan
  38. science

    what was the acceleration of an object between 8 and 10 seconds if velocity at 8 seconds is 10 mi/hr and 0 mi/hr at 10 seconds?

    asked by chris
  39. Computers

    How would the pieces and components of a peer-to-peer network relate to each other?

    asked by Tiara
  40. College algebra

    What is the fundamental theorem of algebra for x^6-64?

    asked by amy
  41. criticial thinking

    Examples of Rhetorical Definition

    asked by Anonymous
  42. US History

    I need to write an essay on this, so can I please get some links to help me? My textbook only describes the domestic decisions, not foreign. Thanks! 25. Describe some of the major foreign policy decisions of the Kennedy Years. How were they consistent with

    asked by mysterychicken
  43. Math

    A point is sliding along a curve y^2 = 1 + cos^3(2x) at whatever speed (even depending on time). Compute the ratio of the rates of change of the vertical and horizontal coordinate with respect to time when the point is at (x, y).

    asked by Bruce
  44. reading

    in chronicles of narnia whats the word ROW's sentence

    asked by haley
  45. math

    thankyou so much in advance.I need to write an equation in the variable x having -sqrt5,6sqrt5 as solutions. This needs to be in standard form ax^2 + bx +c =0. Thank you again and can you show me how you worked It?

    asked by barb
  46. statistics

    Assuming the resting heart rates for a sample of individuals are normal distibuted with a mean of 70 and a standard deviation of 15. Waht percentage of rates less than 70

    asked by Darlene Watson
  47. college

    A lot of people don't have wills. Everyone needs a will, but not all people have one. Wills are important because they explain who gets your stuff after you. You don't want your things going to someone you don't want them to go to. My Aunt Martha went to a

    asked by renea
  48. calculus

    if f(x)=Inx, find: f(2)+f(3) solution pls

    asked by gen
  49. French

    Could you please check these thanks. Directions: Récrivez les phrases d'après le modèle. modèle: Il est parti? Oui, il vient de partir. 1. Ils sont partis? Answer: Oui, il viennent de partir. 2. Vous avez tous fini? Answer: Oui, vous venez de finir. 3.

    asked by miami
  50. calculus

    if f(x)=4^(2x)-1, find :f(1)+f(2) solution pls

    asked by gen
  51. Finance

    Demand of Bonds Point Price of bond Interest rate (i) Demand A $925 (1000 - 925)/ 925 = 8.1% $100 billion B $800 (1000 - 800)/ 800 = 25% $400 billion Table 2: Supply of Bonds Point Price of bond Interest rate (i) Demand A $925 8.1% $400 billion B $800 25 %

    asked by carey
  52. calculus

    if f(x)=3^(x)-3^(-x), find : f(2), f(-1) solution pls..

    asked by gen
  53. Logic and Design

    What logic is used when pseudocoding compound conditions?

    asked by Yvonne
  54. calculus

    if y1=x^(2)+3x-1 and y2= x-5 find: a. y1+y2 b. y1-y2 c. y1*y2 solution pls..

    asked by gen
  55. math

    If x and y are any positive real numbers, then (-8a 2y)(6b 18y)

    asked by Anonymous
  56. Math

    What are the horizonatal asymptotes of y=(1000)/(1+9e^(-.1656x))?

    asked by Ashley
  57. english

    intermittently:continuously:: ??

    asked by Anonymous
  58. calculus

    The side of a square are increasing at 2 inches per second. How fast is the diagonal increasing when the side is 3 inches?

    asked by jessica
  59. english

    I am doing Shakespeare studying Much ado about nothing and do not understand what the following quotation means: "Being reconciled to the prince your brother: I owe you all duty" "Let us to the great supper, their cheer is greater that I am subdued. Would

    asked by anonymous
  60. Health

    is this sentence correct?: Gambling is a form of game that is played for fun or in order to win by chance in faith of luck

    asked by Beauty
  61. Physics Lab

    We have a metal ball and a ramp that we can clamp to the edge of a table. We are supposed to find the coefficient of friction between the ball and the ramp. We think we should use projectile motion and the law of conservation of energy. We don't know what

    asked by Heather
  62. math 050

    1/2 + 2/3

    asked by Anonymous
  63. math 050

    2/3 ÷ 2

    asked by Anonymous
  64. math 050

    3/5 ÷ 4/5

    asked by Anonymous
  65. US History

    1. How did the pattern of European immigration shift in 1890? a. from Jewish to Catholic Europeans b. from northern to southern and eastern Europeans c. from eastern to southern Europeans d. from eastern to western Europeans B? 2. The massive government

    asked by mysterychicken
  66. english

    are these tenses correct please Educating myself about financial planning makes me an efficient student. (Present tense) I had financial problems when I failed to save. (Past tense) Financially I have to know how to plan ahead. (Future Tense) I know how to

    asked by dieseldes
  67. English

    1.We have planted several new varieties of day lilies along the fence. 2.Soon, my shoes were full of sand. 3.For a beginner, he plays well. 4.She jogs around the reservoir every morning. 5.With great courage, Rosa Parks disobeyed the bus driver. Identify

    asked by Janice
  68. Math

    What are the horizonatal asymptotes of y=(1000)/(1+9e^(-.1656x))?

    asked by Ashley
  69. trig

    what is the classified given angle of 177 degrees?

    asked by eddie
  70. calculus

    A man starts walking north at 2ft/s from a point P. Twenty-five seconds later a woman starts walking south at 3ft/s from a point 400ft due east of P. At what rate are the people moving apart 50 seconds after the woman starts walking? Do not include units

    asked by Jasmine
  71. Fin 200

    Healthy Foods, Inc., sells 50-pound bags of grapes to the military for $10 a bag. The fixed costs of this operation are $80,000, while the variable costs of the grapes are $.10 per pound. a. What is the break-even point in bags? b. Calculate the profit or

    asked by Wayne
  72. PreCalc

    Determine whether the sequence is arithmetic. If so, find the common difference. 4, 16, 64, 256, 1024

    asked by gh
  73. AVID/Honors{Rap}

    I need help completing my rap about bullying. If you have any suggestion to add please don't hesitate to add also if you have any suggestions that need to be change or don't make sense please do report.{make sense...please} Bullying. Bullying, with a

    asked by Rodney yo-yo kidd
  74. physics

    A 102.0 N grocery cart is pushed 13.0 m by a shopper who exerts a constant horizontal force of 54.0 N. If all frictional forces are neglected and the cart starts from rest, what is its final speed?

    asked by derek
  75. function

    if y1=x^(2)+3x-1 and y2= x-5 find: a. y1+y2 b. y1-y2 c. y1*y2

    asked by merx

    Three masses are arranged in the (x,y) plane. The X and Y units are meters 4kg at (-1,5 3kg at (1,1) 5kg at (0,0) What is the magnitude of theresulting force on the 5kg mass at the origin? The universal gravitational constant is 6.673e-11 N*m^2/kg^2.

    asked by CJ
  77. math50

    24/50 × 5/8

    asked by Anonymous
  78. math50

    2 - 1/8

    asked by mya
  79. math50

    Can 15/20 be simplified?

    asked by mya
  80. social studies

    How do terrorist groups use the media to portray their message

    asked by jess
  81. English

    Can you please tell me if my last sentences are possible? What does "to be a snake" mean? Does it mean Jason is unfriendly to Storm? 1) Mickey is late because he’s got the wrong room number on his timetable. 2)He apologises to Mrs Winter for being late.

    asked by Franco
  82. science

    need to identify the elements, compounds and mixtures of the iron and sulpher reaction.

    asked by jack
  83. math

    Find out the equator on this 68, 195, 34, 56

    asked by Anonymous
  84. statistics

    Why might the following not be normally distributed? (a) The time it takes you to drive to the airport, (b) The annual income for a randomly chosen major league baseball player, (c) The annual hurricane losses suffered by homeowners in Florida.

    asked by Anonymous
  85. statistics

    Why might the following not be normally distributed? (a) The time it takes you to drive to the airport, (b) The annual income for a randomly chosen major league baseball player, (c) The annual hurricane losses suffered by homeowners in Florida.

    asked by Anonymous
  86. math

    how do i figue out how to do arrays and an expanded algorithm

    asked by lane
  87. science

    20. Which combining form means “ear”? A. ONC/O C. OT/O B. OPT/O D. ORTH/O 21. Which group of words describes a condition that results from aging? A. Presbyopia C. Muscle tone B. Articulation D. Astigmatism 22. The most complicated part of the brain is

    asked by betty
  88. science

    1. All of the following are parts of the retina except A. rods. C. fovea. B. cones. D. lens. 2. Which of the following are tests of the eye? A. Cephalgia, chondrodynia, sternotomy B. Myelography, photon absorptiometry, thermography C. Rheumatoid arthritis,

    asked by ADAM
  89. science

    3. The membranous coverings that protect the b B. meninges. D. gyri. 4. A common result of hyperthyroidism is A. acromegaly. C. Graves’ disease. B. osteoporosis. D. myxedema. 5. A 63-year-old man has become progressively hard of hearing. He’s a retired

    asked by blake
  90. Linear Equation question

    Hello! quick question. why the line y = -3 is a horizontal line. describe how this line sits on the Cartesian (coordinate) plane. I have tried a few thoughts on this. Firstly the horizontal sits on the y intercept. The graph y = b is a horizontal line. -3

    asked by AMY
  91. science

    2. A man is shot in the head, and the bullet stops just outside the dura mater. What is the innermost layer that the bullet has penetrated? A. Skin C. Fat B. Bone D. Periosteum 3. Which part of the brain is responsible for the maintenance of muscle tone

    asked by JT WALLS
  92. 6 grade algebra

    cindy earns 6% simple interest each year on her savings account. if she has $850 in her account and leaves the money in there for 5 years. how much interest will the money earn? what is the new balance in cind's account?

    asked by sierra
  93. science

    5. The Papanicolaou test is used to detect A. conization in situ. C. minimal cervical dysplasia. B. protein in the urine. D. colonic polyposis. 6. The function of the antidiuretic hormone is to A. retain water for the body’s use. B. begin digestion of

    asked by JALL SHAW
  94. AVID/Honors{Rap}

    HELP PLEASE.............

    asked by Rodney yo-yo kidd
  95. science

    . What is cystitis? A. A congenital condition of the kidneys B. Inflammation of cysts in any organ C. A type of urinary tract infection D. Irritation of the urethra and/or meatus 9. Uremia is the result of A. electrolye imbalance in the intracellular body

    asked by TONY
  96. science

    13. A procedure used to remove kidney stones by breaking them up in the urinary tract and allowing them to wash out with urine is A. ureterolithotomy. C. lithotripsy. B. lithopaxy. D. nephrolithotomy. 14. The convulsive stage of toxemia of pregnancy is A.

    asked by mac
  97. Economics

    At range of outputs showing economies of scale or size is called what?

    asked by Laura
  98. US History

    11. Although settlers valued democracy, they often a. rejected controls over government b. elected weak legislatures c. disregarded the rights of minorities d. failed to vote Not sure... 12. Jack Kerouac, the author of On The Road, was the a. pediatrician

    asked by mysterychicken
  99. algebra


    asked by john
  100. chemistry

    Calculate the molarity of a solution made by diluting 0.200 L of 1.00M HCl solution to a volume of 1.00 L

    asked by Liza
  101. social studies

    Which event occurred between the Scientific Revolution and the French Revotution

    asked by tony
  102. Chemistry

    Reacting Potassium carbonate with Barium chloride

    asked by Chris
  103. physics

    A car's maximum acceleration on a dry road is 10 m/s2. What speed should it have to be able to make a turn with a radius of 47 meters?

    asked by john
  104. physics

    A car's maximum acceleration on a dry road is 10 m/s2. What speed should it have to be able to make a turn with a radius of 47 meters?

    asked by john
  105. social studies

    The question deals with a time line. I know the Scientific Revolution , French Revolution and the Industrial Revolution from the 1500's to 1945.

    asked by tony
  106. English

    1.We have planted several new varieties of day lilies along the fence. 2.Soon, my shoes were full of sand. 3.For a beginner, he plays well. 4.She jogs around the reservoir every morning. 5.With great courage, Rosa Parks disobeyed the bus driver. Identify

    asked by Janice
  107. math

    A car travels along a straight road, heading east for one hour then traveling for thirty minutes on another road that leads northeast. If the car has maintained a constant speed of forty miles an hour, how far is it from its starting position

    asked by tonda
  108. Physics

    From the edge of a 25 m building, a student threw s rock up 35 m/s and it landed on the ground. How long was the rock in the air?

    asked by Marie
  109. Math: Calculus

    Estimate the area under the graph of f(x)=3x^3+5 from x=-1 to x=4, first using 5 approximating rectangles and right endpoints, and then improving your estimate using 10 approximating rectangles and right endpoints. I'm having problem with using the

    asked by REALLY NEED HELP!!!!
  110. PHYSICS ---HELP!

    A patient is to be given a blood transfusion. The blood is to flow through a tube from a raised bottle to a needle inserted in the vein . The inside diameter of the 4.8 cm long needle is 0.48 mm, and the required flow rate is 4.9 cm/3 of blood per minute.

    asked by tiffany
  111. Calculus

    I'm having a little trouble with this would be great if you could point out where I'm going wrong. Hours of Daylight as a Function of Latitude. Let S(x) be the number of sunlight hours on a cloudless June 21st, as a function of latitude, x,

    asked by Sara
  112. math 050

    24/50 × 5/8

    asked by mya
  113. english

    Can someone please give me ideas of 3 pros of eating meat and 3 cons of eating meat? Please and thank you

    asked by daniel
  114. math 050

    2 - 1/8

    asked by mya
  115. math 050

    1/4 × 3/5

    asked by mya
  116. ELA

    What website can I find information on Vampire Survival and Examples From The Movie of Vampire being killled.?????

    asked by Anonoyms
  117. Physics

    A person pulls a toboggan for a distance of 30.0 m along the snow with a rope directed 15.0° above the snow. The tension in the rope is 99.0 N. (a) How much work is done on the toboggan by the tension force? (b) How much work is done in the same tension

    asked by Veronica
  118. someone help me PLEASE

    Help me please!

    asked by mya
  119. US History

    33. Because of its reliance on aircraft to carry nuclear weapons, the United States lagged behind the Soviet Union in a. hydrogen bombing testing b. spy plane technology c. missile development d. destroyer and cruiser connection C? 36. What development

    asked by mysterychicken
  120. math!HELP!!

    write a quadratic equation in the variable x having the given numbers as solutions. Use ax^2 + bx + c=0 Thanks so much for the help

    asked by barb
  121. geometry

    What is the slope of the line perpendicular to the line represented by this equation y = ½ x + 24 ?

    asked by Anonymous

    lim(y^2+5y-1) y-->2

    asked by gen
  123. Math Models

    What type of graph is best suited for displaying the range and frequency distribution of the number of hours the students in a class spend on homework while still showing each individual amount of time spent on homework?

    asked by Anonymous

    lim y^3-y^2-y-2/2y^3-5y^2+5y-6 y-->2

    asked by gen

    lim sin teta(sin2 teta)/1-cos teta teta-->0

    asked by gen

    lim xcsc(3x) x-->0

    asked by gen
  127. chemistry

    a 30. L sample of gas exerts 200. mm Hg pressure at 10 degrees C. What volume does the gas have at 300. mm Hg and 25 degrees C?

    asked by kaitlin
  128. social studies

    What Does Al-Qaeda actually want to achieve

    asked by jess
  129. algebra

    two nombers have a sum of 15. one of the numbers is x. Find an expression for the other number

    asked by alex
  130. social studies

    why does al qaeda exist?

    asked by jess
  131. Physics: Angular Width. Why is my answer wrong?

    A beam of yellow laser light (590 nm) passes through a circular aperture of diameter 5.0 mm. What is the angular width of the central diffraction maximum formed on a screen? I can't seem to get this answer right. I don't think I am finding the first part

    asked by Sar
  132. physics

    A robot probe drops a camera off the rim of a 245 m high cliff on Mars, where the free-fall acceleration is 3.7 m/s2. Find the velocity with which it hits the ground. Answer in units of m/s. 2)Find the time required for the camera to reach the ground.

    asked by clue
  133. history

    what was the role of sioux nad cheyenne in the battle of little bighorn?

    asked by ashely
  134. 4th grade algebra

    what is 7-7-7-7-7 eguals?

    asked by Judy
  135. english

    A novel of manners deals with the customs of a specific social class. true?

    asked by danny
  136. US History

    43. President Truman issued the Truman Doctrine in response to a. Soviet aggression in Poland b. pressure by Communists on Turkey and Greece c. Churchill's "Iron Curtain" speech d. Stalin's demands at the Postdam Conference A? 45. The Weathermen alarmed

    asked by mysterychicken
  137. physics

    Stephanie serves a volleyball from a height of 0.76 m and gives it an initial velocity of +7.2m/s straight up.How high will the volleyball go? The acceleration of gravity is 9.81 m/s2. Answer in units of m. 2) How long will it take the ball to reach its

    asked by wow
  138. Physics

    A tennis ball of mass= 0.058 kg and speed= 19 m/s strikes a wall at a 45 degree angle and rebounds with the same speed at 45 degrees. 1. What is the magnitude of the impulse given to the ball? 2. What is the direction of the impulse given to the ball?

    asked by Nick
  139. math gr.6

    I already found the arm span of 5 people. How do I find the median stride?

    asked by Anonymous
  140. physics

    A small first-aid kit is dropped by a rock climber who is descending steadily at 1.6 m/s. After 1.6 s, what is the velocity of the first-aid kit? The acceleration of gravity is 9.81 m/s2. 2)How far is the kit below the climber after the 1.6 s?

    asked by john
  141. chem

    I am having a hard time with the following : 50 g HCl + 50g Ca(OH)2=H2O+? amt of CaCl2? I don't know how to set this prob. up.Please HELP!Thank you in advance....

    asked by joann
  142. physics

    What is the instantaneous velocity of a freely falling object 28 s after it is released from a position of rest? The acceleration of gravity is 9.8 m/s2 . 2)What is its average velocity during this 28 s interval? 3) How far will it fall during this time?

    asked by helpme
  143. Physics

    A 0.028 kg rifle bullet traveling 210 m/s buries itself in a 3.1 kg pendulum hanging on a 2.5 m long string, which makes the pendulum swing upward in an arc. 1. Determine the vertical and horizontal components of the pendulum's displacement.

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  144. math

    What are the real roots of the quadratic function 4x^2-x+5?

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  145. physics

    A ball is thrown straight up with an initial speed of 60 m/s. How high does it go? Assume the accelera- tion of gravity is 10 m/s22 2)How long is it in the air?

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  146. Chemistry 214

    Help! A soultion contains 0.100 Pb(NO3) and 1.00x10^-5 M AgNO_3. It is intended to separate out the silver by selective precipitaion of AgI. What is the maximum percentage of total silver that can be recovered free of contamination by PbI_2? (ksp for

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  147. Science

    What is the difference between granite and gabbro?

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  148. Physics

    You decide to build a cyclotron (because you are bored) that will accelerate protons to 10% of the speed of light. The largest vacuum chamber you can find is 50cm in diameter. What magnetic field strength will you need?

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  149. criminal justice 240

    CheckPoint: Drug Use and Delinquency Response Write a 200- to 350-word response answering the following questions according to the journal articles: o What are the main reasons of youth drug use? o How does drug use relate to delinquency?

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  150. english

    What does this mean? "If you have no intention of loving or being loved, then the whole journey is pointless."

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  151. PHI103

    Cathy owes the local video store six overdue movies.Each of Cathy's overdue movie is a comedy, only comdies are overdue at the local video store. What premise added to this statement would make this conclusion valid? Answer: Cathy is the only person that

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  152. physics

    show that in the limit that the radius of the sphere goes to zero to kept the magnetic moment constant

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  153. physics

    A ball is thrown vertically upward with a speed of 23.7 m/s from a height of 2.0 m. How long does it take to reach its high- est point? The acceleration of gravity is 9.81 m/s2 2) How long does the ball take to hit the ground after it reaches its highest

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  154. English

    1. It is easy for us to weed the garden. 2. It is easy for us to work in the garden. 3. For us to weed the garden is easy. 4. For us to work in the garden is easy. (Are they all grammatical and the same?)

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  155. human resources

    Prepare a 700- to 1,050-word report on a career management plan for your new employees. Assuming your budget is zero; provide a justification of why your report will work.

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  156. English

    1. I lied and told him that you were a fine gardener. 2. I lied and I told him that you were a fine gardener. 3. I lied him that you were a fine gardener and I told him that you were a fine gardener. 4. I lied him and I told him that you were a fine

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  157. math 050

    What is 120/400 after u simplify it?

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  158. geometry

    The points L(4, 0),M(10, 0), and N(7, 5) form #LMN.What is the sum of the slopes of the three sides of the triangle?

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  159. writing

    I am writing an oppossing views essay on the effectiveness of the death penalty. Any thoughts on how I should begin? I understand that I am not supposed to give my opinion. Thanks!

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  160. Biology

    Which of the following is NOT a current goal of biotechnology? A) more effectively treating disease B) improving agriculturally important food plants C) efficiently producing biologically important molecules D) creating humans with higher intelligent

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  161. College Chemistry

    1.14g of sodium bicarbonate (NaHCO3)is dissolved in 500 mL H2O. What is the Ph of the solution? Assume constant volume.

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  162. Math


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  163. Multivariable Calculus

    Determine the range of a snowball thrown with an initial speed of 6 meters/sec at an angel of elevation of 45 degrees. (Assume g = 9.8 meters/sec) I'm not really sure what I'm supposed to find here, am I supposed to find the horizontal distance or the

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  164. Math


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  165. Math


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  166. Earth CRYience

    Assume a parcel of air on the surface with a temperature of 29 degrees Celsius with a relative humidity of 50%. If the parcel rises at what altitude should clouds form?

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  167. stoichiometry problems

    Hey I hve problems with calculate stoichiometry problems and next week I have a test about it can someone help me out and give me a site where everything is written step by step ....thank u guys :) I REALLY NEED HELP NO JOKING

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  168. physics

    You should expect concrete to have an elastic constant that is _____ than wood. a. larger than b. smaller than c. equal to

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  169. physics

    Graph #1 is a parabola. Graph #2 is a hyperbola. a. Only graph 1 may possibly represent Hooke's law b. Only graph 2 may possibly represent Hooke's law c. neither

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  170. chemistry

    Light with a wavelength of 405 nm fell on a strontium surface, and electrons were ejected. If the speed of an ejected electron is 3.39 105 m/s, what energy was expended in removing the electron from the metal?

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  171. physics

    A dinner plate drops and breaks. This best illustrates the ______ law of THERMODYNAMICS A. 1st b. 2nd c. 3rd d. 4th

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  172. ALGEBRA2

    The graph of equation is expanded vertically by a factor of 3 and reflected over the x-axis. how would you describe the graph?

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  173. physics

    A wave that is travelling due west causes particles of the conducting material to ibrate "north/south". This wave is best described as: a. longitudinal b. transverse c. tran!@#$%^&e d. permute

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  174. math

    9t=27(t - 1/3)

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  175. physics

    A certain wave is incident on an interface at an angle of 40 deg. The wave emerges into the other material at an angle of 30 deg. Crossing the interface, the wave: a. increased speed b. reduced speed c. maintained constant

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  176. physics

    An observer detects an apparent frequency of 505 hz coming from a 500 hz source. Which is true? a. the observer is moving due east, away from the stationary source b. the source is moving due west, away from the stationary observer c. the souce and the

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  177. physics

    A 2000 lb box is being held at rest submerged in water. The box is displacing 2500 lbs of water. When the box is released from its submerged position, the box will a. sink b. rise to the surface and float c. remain where it is d. result unknown

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  178. math

    solve using the multiplication principle. -3/7x=6/35 I really need help with this problem. Thanks

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  179. physics

    A 5 kg block of average density .625 kg/m^3 has a volume of about _____ cu. m

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  180. Math!!!!

    I am getting desperate. Can someone please help me with this and thank you in ADVANCE!!!! WRITE A QUADRATIC EQUATION IN THE variable x given the solutions: -sqrt7, 7sqrt7.This needs to be in the standard form ax^2 + bx+c=0. I really need help as this is

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  181. physics

    A 5 kg block of average density .625 kg/m^3 has a volume of about _____ cu. m

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  182. math116

    -8x-27=-32 1/5 the solution must be in the form as an integer or simplified fraction. Thank you.

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  183. physics

    A series of waves traveling at 200 m/sec are being generated by a 100 Hz source. A point at the very top of the crest of a certain wave is ____ meters from a corresponding point 3 crests away.

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  184. physics

    A 400 calorie quantitiy of heat is added to 20 grams of water and as a result, the water reaches a final temp of 70 deg. C. The starting temp of the water was most nearly _____ deg C.

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  185. physics

    A spring that is .7m in length elongates to 1.06 m when a 20 newton force is exerted to stretch the spring. By how much more does the spring stretch when an additional 8 newtons of force is exerted on it?

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  186. physics

    What approximate change in decibles does an observer experience form a sound source if the oberver moves to a new location that is 67% as far from the source?

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  187. Physics

    Four identical 12µC charges are placed at the corners of a square of sides 44 cm, with one additional 12µC charge placed at the center. Find the electric potential at the midpoint of one of the sides.

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  188. Physics Help Please

    A sample of an unknown material appears to weigh 270 N in air and 165 N when immersed in alcohol of specific gravity 0.700. (a) What is the volume of the material? (b) What is the density of the material?

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  189. physics

    A gas is taken though a single process in which its volume decreases by .25 m^3 as the temp of the gas rises 2deg C. Which of the following people are more likely to have reached the correct conclusion? a. Bob ids this process as adiabatic b. Jill ids this

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  190. Physics

    .) Beth launches a rocket out in the courtyard. It stays in the air for 7.25 seconds before coming back down. a.) How high did it get? b.) With what velocity did it hit the ground upon returning to Earth? c.) What is its rate of acceleration as it slows

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    I only have 1 hour to get this question answered. Thank you in advance. I need a quadratic equation in the variable x given the solutions: -7 sqrt 7, and 7 sqrt 7 This needs to be in the standard form of ax^2+bx+c=0. Can someone please help me with

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  192. PHysics

    .) Bailey has taken up parkour. She attempts to clear the gap between two buildings. Bailey is on a roof which is 50m high and she is attempting the jump to a building that is 42m high. a.) If the two buildings were built touching (i.e. there is no gap)

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  193. international business

    True or False: It is possible for a firm to purchase complete insurance against the risks that arise from changes in exchange rates in the foreign exchange market.

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  194. PHYSICS HELP!-Hooke's Law

    You should expect concrete to have an elastic constant that is _____ than wood. a. larger than b. smaller than c. equal to So...based on what I looked up as the definition for elastic constant and linear elasticity, I think conrete is less elastic than

    asked by Jael