Questions Asked on
April 24, 2012

  1. Calculus

    A flower pot is dropped from a point 12 feet above the ground,so that it will land 4 feet from the base of a 12 foot lamppost. At what rate is the shodow of the flower pot moving along the ground when the pot is 8 feet above the ground?

    asked by Amber
  2. Physics

    Suppose when we look in one half of the sky, the CMBR appears to be at a temperature of 2.72K. What is the peak wavelength in that direction? Are we moving toward or away from the region of space? What is our velocity with respect to the CMBR?

    asked by Leila
  3. noun

    if two dices are tossed together, the probability that the product will be less or equal to 18 what?

    asked by grace
  4. Accouting

    Vacation pay payable is reported on the balance sheet as a(n) a. current liability or long-term liability, depending upon when the vacations will be taken by employees b. current liability c. expense d. long-term liability it's not b

    asked by Ricki
  5. Early Childhood Literacy

    Erikson's work identified:

    asked by Nikki
  6. Chemistry

    How many moles of O2 are needed for the complete combustion of 3 moles of CH4?

    asked by annabel
  7. Math: Geometry

    If 0 < y < 1 and 0 < x < 1, find the probability that y < x. Begin by sketching te graph, and then use the area method to find the probability. Please help me. I do not understand. Thank you in advance!

    asked by Rose
  8. science

    What will be the final temperature if 1600 cal of heat is given to an ice block of mass 20 grams?

    asked by shankar
  9. science

    What will be the final temperature if 1600 cal of heat is given to an ice block of mass 20 grams?

    asked by shankar
  10. English

    I have to write a argment Paper and it is based on Native Americans traditional culture and beliefs are or are not valuable in today's world. I want to write a paper on how Sioux, Kiowa, and Cheeroke related. I don't know it this is a good thesis: Native

    asked by La
  11. Chemistry

    A sample of iron ore contains 1.02 x 10^24 Fe atoms and is found to be 69.94% Fe by mass. What is the mass of the sample?

    asked by annabel
  12. science

    For ........... the graph of current and voltage is not a straight line and value of resistance is not constant.

    asked by shankar
  13. science

    On vernier scale of vernier calliper there are 25 lines and on main scale smallest division is 1 mm then least count of vernier calliper is

    asked by shankar
  14. Enviro Science

    Describe the diversity of species on Earth, relating the difference between known numbers and estimated numbers Thanks -MC

    asked by mysterychicken
  15. science

    A straight highway leads to the top of the base of a 50 meter tall tower. Frm the top of the tower, if yhe angles of depression of two cars on the road are 30° and 60° , then the distence between the tow cars is ................meter.

    asked by shankar
  16. science

    A straight highway leads to the top of the base of a 50 meter tall tower. Frm the top of the tower, if yhe angles of depression of two cars on the road are 30° and 60° , then the distence between the tow cars is ................meter.

    asked by shankar
  17. Calc 1

    An 8 foot tall fence separates Larry's yard from Evan's yard.The fence is 3 feet from Larry's house and runs parallel to the side of his house. Larry wants to paint his house and needs to position a ladder extending from Evan's yard over the fence to his

    asked by Amber
  18. English

    Does contemporary literature encourage young readers to look beyond Australian stereotypes? If so then why? Please state atleast 5 argumentative points.

    asked by Rianna
  19. Biology

    Is depolarization positive and repolarization negative?

    asked by Saphire
  20. Life orientation

    In 40 to 45 lines critically discuss five ways in which the human or environmental problem impacts problem impacts on the community.provide relevant sources to support your claims

    asked by Soniah
  21. Chemistry

    A gas is collected over water at 30.0 degrees celsius. It's pressure is 752.5 mm Hg. What is the pressure of the dry gas? Water vapor pressure at twenty degrees Celsius is 27.5 mm Hg.

    asked by Maria
  22. Chemistry

    A gas is collected over water at 30.0 degrees celsius. It's pressure is 752.5 mm Hg. What is the pressure of the dry gas? Water vapor pressure at twenty degrees Celsius is 27.5 mm Hg.

    asked by Maria
  23. Math

    A number cube is rolled 420 times and the result recorded as follows: there were 70 ones, 75 twos, 64 threes, 73 fours, 72 fives, and 66 sixes. What is the experimental probability of not rolling a five?

    asked by Lisa
  24. Physics

    A metal cylinder with a area of 0.01m^2 and height of 0.1m is suspended levelly in water with a thin string. a)What is the water pressure on the top and bottom of the cylinder if the cylinder top is 1m below the water surface? And the amount of buoyant

    asked by Jermaine
  25. Physics

    Water has a density of 1000kg/m^3. The depth of a swimming pool at the deep end is about 4m. A)What is the volume of a column of water 4m deep and 1m^3 in cross-sectional area? B)What is the mass of this column of water? C)What is the weight of this column

    asked by Sara
  26. algebra college level

    it says y=-16x+181 represents number of students in class where x represents number of hours study required weekly. what is rate of change of number of students in class to number of hours study

    asked by azima
  27. Mechanics problem - Newtons laws - resultant force

    I have this mechanics problem. Please help me solve it. Rory, Aurora and Raoul are three lions fi ghting over a piece of meat of mass 12 kg. Each lion exerts a horizontal pull. Rory pulls with a force of 800 N. Aurora, who is 120degrees to Rory's right,

    asked by John
  28. maths

    complete the patterns: find the 50 th term and n th term a)3,6,11,---,27,---,51,---,.. b)0,3,8,---,---,35,---,63,.. c)1,8,27,---,---,216,---,512,..

    asked by RS
  29. physics

    A man leaves the garrage in his house and drives to a neighbouring town which is twenty kilometres away from his house on sight-seeing. He returns home to his garrage two hours after. What is his average velocity from home in km/h?

    asked by pachi
  30. arithmetic

    2. A person walking along a straight road observed that at two consecutive kilometre stones the angles of elevation of a hill front of him are 40o and 80o respectively. Find the height of the hill.

    asked by zainab
  31. English

    Hello! Need some help with these 3 sentences. They have to be filled with either simple future, going to future or present continuous 1. Son: Mum, what are we having for dinner tonight? Mum: I haven’t decided yet. But I think we __________(HAVE) pasta.

    asked by Mark
  32. math

    If 3feet*50metre is Rs.8720,how much would 2feet*40metre cost?

    asked by James
  33. Language Arts

    In the sentence, "In general people are better at spending than saving." I know there would be a comma after "general". Would there also be a comma after "spending"? Thanks..

    asked by Brandi
  34. Physics

    Suppose when we look in one half of the sky, the CMBR appears to be at a temperature of 2.72K. What is the peak wavelength in that direction? Are we moving toward or away from the region of space? What is our velocity with respect to the CMBR?

    asked by Leila
  35. mathematics

    A spring with a mass of 4 kg has damping constant 28, and a force of 12 N is required to keep the spring stretched 0.5 m beyond its natural length. The spring is stretched 1 m beyond its natural length and then released with zero velocity. Find the

    asked by Marwan
  36. trigonometry

    show that sin 2theta/1-cos 2 theta = cot theta

    asked by lindsay
  37. math

    A spring with a mass of 4 kg has damping constant 28, and a force of 12 N is required to keep the spring stretched 0.5 m beyond its natural length. The spring is stretched 1 m beyond its natural length and then released with zero velocity. Find the

    asked by Marwan
  38. chemistry

    which liquids are effected by an electric field and why 1-chloropropane, pentane, tetrachloromethane, cyclopentane

    asked by Naila
  39. child development

    When both parents believe that men are capable of nurturing infants a. mothers devote time to caregiving b. fathers devote less time to caregiving c. fathers devote more time to caregiving d. the marital relationship tends to suffer, particulary when me

    asked by HELP
  40. acc 100

    Jan Nab is the sole owner of Deer Park, a public camping ground near the Lake Mead National Recreation Area. Jan has compiled the following financial information as of December 31, 2010. Revenues during 2010—camping fees $140,000 Market value of

    asked by Anonymous
  41. Chemistry

    What is the pH of a 2.5 x 10-2 M HCl solution? I'm so confused how to find this :(

    asked by Jess
  42. intermediate algebra

    Rewrite with positive exponents.Assume that even roots are nonnegative quanities and all denominators are nonzero...(4xy^-2)^-2

    asked by Lueshelle
  43. Math

    Steinwelt Piano manufactures uprights and consoles in two plants, Plant 1 and plant 2. the output of plant 1 is at most 300/month, and the out put of plant 2 is at most 250/month. theses pianos are shipped to three warehouses that serve as distribution

    asked by Terri
  44. math

    A company begins a radio advertising campaign in Chicago to market a new soft drink. The percentage of the target market that buys a soft drink is estimated by the function f(t)=100(1-e^-0.01t), where t is the number of days of the campaign. After how long

    asked by julie
  45. chemistry

    how to explain that HCL is a stronger acid than HOCL?

    asked by chamy
  46. math

    what si the equation in slope-intercept form 5x-y=6

    asked by Taylor
  47. statistics

    A history professor finds that when he schedules an office hour at the 1030 am time slot an average of 3 students arrive. Use the poisson distribution to find the probability that in a randomly selected office hour in the 1030 am time slot exactly 5

    asked by Sabrina
  48. Math

    mx+b=y is a way to write the Word Bank: Reducible, Positive, Coefficient, Undefined, Zero, Line, Slope intercept form, Term, Constant, whole number, order pairs

    asked by Deja
  49. Pre-Algebra

    what is the equation in slope-intercept form of 7x+2y=10

    asked by April
  50. english

    Which of the following statements best describes how Zaroff justifies hunting human beings?

    asked by dominique
  51. Mathematics

    There are 250 marbles altogether. Johan has 20 more than Mary who has 50 less than John. How many marbles does John have?

    asked by Anonymous
  52. chemistry

    A solution of PbI2 has [Pb2+] = 4.5 x 10-5 and [I-] = 6.5 x 10-4. PbI2 has Ksp = 8.7 x 10-9. Write down the reaction that is taking place. Calculate Q. Is Q larger or smaller than the Ksp? Is the solution unsaturated, saturated, or supersaturated? Will a

    asked by Anonymous
  53. Chem

    3. Chalcocite is an ore from which copper can be extracted for commercial use. The formula for this important ore is Cu2S. In the laboratory it is formed by the following reaction: 2Cu + S ¨ Cu2S The reaction takes place in laboratory conditions that

    asked by Anonymous
  54. AP Literature-Macbeth

    How does the banquet scene blur the clear-cut and common-sense distinction that most of us make between the real and imaginary? In what other scenes has this distinction been blurred?

    asked by Lilly
  55. Foreign languages

    I urgently need you to check these sentences, Writeacher. Thank you very much. 1) I was invited by Mary to come round (come along is possible?) one of these days. 2) You ought not to worry about (or be worried about but NOT be fussed about?) a common (not

    asked by Mike1
  56. Introduction to University Studies

    How might you apply each of the four steps of reading to reading electronic materials

    asked by lisa
  57. chemistry

    what is hibs boson it is a gold particle

    asked by frank
  58. English II

    The question is: my neighbors across the street have a new car; it's a toyota. Answers: (a) My, Street, Toyota (b) My (c) My, Toyota (d) My Neighbors, Street, Car, Toyota Now I had to choose which words to capitalize and my answer was (c)... am I correct?

    asked by PJ
  59. Geometry

    if a person 5 feet tall casts a 3 foot shadow and a building casts a 12 foot shadow, what is the height of building in feet?

    asked by Trevor
  60. english

    A. the dictionary definition of a word B. making assertions about a group that are too broad C. parts of a presentation that augment the words D. rhetorical devices that rely on faulty reasoning E. the emotional associations a work invokes 14. audiovisual

    asked by Erin.
  61. intermediate algebra

    Soe using the eliminatin method.Show work.State if it has infinite solutions or no solutions...-15r+12s=24,30r-24s=48

    asked by Lueshelle
  62. English II

    Another question was: aunt consuelo is consuelo melendez, doctor of dental surgery. I had to choose which words were supposed to be capitalized. (a) Aunt Consuelo, Melendez, Dental Surgery (b) Aunt Consuelo, Consuelo Melendez (c) Aunt, Consuelo Melendez,

    asked by PJ
  63. Physics

    Suppose when we look in one half of the sky, the CMBR appears to be at a temperature of 2.72K. What is the peak wavelength in that direction? Are we moving toward or away from the region of space? What is our velocity with respect to the CMBR?

    asked by Leila
  64. Probability

    6 sided die is rolled 8 times, how many sequence of rolles are there?

    asked by Keith
  65. Math

    Simplify 5^1/3 /2(3)^1/2 - 2^1/2

    asked by Hanu
  66. math

    What is the length of line segment S T if S is at negative five comma negative one and T is at negative one comma twelve? Round to the nearest hundredth.

    asked by meme
  67. Algebra 2

    Introduction to quadratic equations? If you solve the equation by completing the square, fill in the blanks. 9x^2+9x+4=0 x^2+x+blank=-4/9+blank

    asked by Chelsea:)
  68. L&o

    In 10-15 line critically discuss 5 ways in which the human or environmental problem impacts on the community?

    asked by Busisiwe
  69. Chemistry(Please help)

    1) Nitrosyl chloride (NOCl) decomposes at high temperature. The equation is 2 NOCl (g) -> 2 NO (g) + Cl2 (g) at 227oC Using delta Ho = 81.2 kJ and delta So = 128 J/K, calculate the value of the equilibrium constant for this reaction. I do not know how to

    asked by Hannah
  70. math

    A man cycles 5 miles due north and 12 miles due east. a. what is the distance traveled by the man? b. what is displacement of the man?

    asked by yorktech
  71. chemistry

    If 2.3 mol of has a volume of 1.1 L at 289 K , what is the pressure in atm ?

    asked by Anonymous
  72. life orientation

    Five ways in which the human or environmental problem impacts on the community

    asked by kidibone
  73. chemistry

    A sample of neon gas used in a neon sign occupies a volume of 3.90 L at a pressure of 580 torr. Calculate the volume of the gas if the pressure in the glass tube of the sign is 783 torr.

    asked by Anonymous
  74. chemistry

    A hot-air balloon has a volume of 970 L at 28 degrees C . To what temperature must it be heated to raise its volume to 1200 L , assuming the pressure remains constant?

    asked by Anonymous
  75. chemistry

    If 3.0 mol of O2 has a volume of 26.0 L at a pressure of 1.6 atm, what is its temperature in kelvins?

    asked by Anonymous
  76. chemistry

    In the carbonic acid equilibrium system, what happened to the size of the size of the balloon upon addition of more acid (HCl) and also what happened to the balloon upon addition of NaOH, was this expected? why or why not. ( show answers using equilibrium

    asked by kims
  77. chemistry

    How many moles of a gas will occupy a volume of 0.53 L at a temperature of 343 K and a pressure of 2.6 atm ?

    asked by Anonymous
  78. Physics

    For a record playing at 45 rpm, find the frequency and the angular velocity. Frequency= Angular velocity=

    asked by Allen
  79. Physics

    Suppose when we look in one half of the sky, the CMBR appears to be at a temperature of 2.725K. What is the peak wavelength in that direction? Are we moving toward or away from the region of space?

    asked by Leila
  80. math

    The ratio of A's stickers to B's stickers was 3:4. After A bought another 18 stickers and B lost 10 stickers, the ratio became 3:2. Find the number of stickers both of them had at first.

    asked by Al
  81. Physics

    A uniform rectangular sign of width 47.6 cm, height 25.0 cm, and negligible thickness hangs vertically from supporting hinges attached at its upper edge. Find the period of small-amplitude oscillations of the sign.

    asked by Steve
  82. Physics

    Suppose when we look in one half of the sky, the CMBR appears to be at a temperature of 2.725K. What is the peak wavelength in that direction? Are we moving toward or away from the region of space?

    asked by Leila
  83. Math

    Suppose that you want to purchase a home for $450,000 with a 30 year mortgage at 6% interest. Suppose that you can put 20% down. Assume that the monthly cost to finance $1,000 is $6.00. What are the monthly payments

    asked by Alicia
  84. Physics

    A 1.55 kg mass attached to a spring oscillates with a period of 0.375 s and an amplitude of 16.5 cm. (a) Find the total mechanical energy of the system. (b) Find the maximum speed of the mass.

    asked by Alex
  85. Chemistry

    A solution contains 0.400 g of NaOH in 20.0 mL of solution. What is its molarity

    asked by Urgent
  86. chemistry

    Calculate the amount of NaOH in this solution 5.00mL of 12.0 NaOH is diluted with water to make 24 mL of 2.50 NaOH solution

    asked by crystal
  87. life orintation

    Critically discuss 8 ways in which growth impacts on your community or any other community within south africa or globally

    asked by thapelo
  88. chemistry

    The solubility of AgCl is 0.000013 mol/L. Calculate the Ksp for AgCl

    asked by Anonymous
  89. hindi

    example for anuswar

    asked by gaiyus
  90. health

    Which age groups benefit from physical activity? A. Children B. Middle aged adults C. Older adults D. All of the above

    asked by cynthia
  91. English

    Choose the progressive or emphatic verb tense that is used in each sentence. 18.Ms. Palmer has been organizing the class schedules for us. present perfect progressive past progressive present progressive 19.We had been listening to the radio when the

    asked by heather
  92. English

    His mother hoped he would apply to medical school, but his dream was to become the Manager of fast-food franchise operation.

    asked by Kim Rogers
  93. Algerbra

    Is there an instance when a linear equation is not a function?

    asked by Chauncey
  94. English

    MECHANICS (errors in the use of apostrophes) Answer At one time, "yes, ma'am" and "no, sir" were some boys' and girls' respectful responses to adults' questions. Safeguarding the environment is not somebody elses responsibility; it is our's. The

    asked by Kim Rogers
  95. Algebra 2

    Mary and Sue are both on bikes and leave from point A. Mary travels west at a uniform speed (x mi/hr). Sue travels north at 5mi/hr faster than Mary. After 2 hours, they are 50 miles apart. What is the speed of each girl?

    asked by Chelsea:)
  96. assessment

    When scoring the MMPI 2, how can you intrepret it and what is the diagnosis according to Axis II. The scores are as follow: ?= 13 L = 3 F=19 k=8 hS=14 d=30 hY=32 pD=24 Mf=37 Pa=12 Pt=25 Sc=21 Ma=22 Si=32 Pleae forward results/intrepretation

    asked by ruth
  97. Writing

    Purpose writing an informal report, using a memo format. Preparation First, review the information on outlines in Organizing, Researching, and Illustrating Your Material. Next, review the instruction on informal and formal reports and format in this study

    asked by Anonymous
  98. ethics & legal issues

    A female patient is scheduled for lumbar spine series. The radiographer is asked to go to another room for some accident victims. She tells you everything is ready to go. You go ahead and perform the x-rays. It is revealed that the woman is pregant and in

    asked by linda
  99. Math

    Suppose Kevin and Jill both deposit $4000 into their personal accounts. If Kevin’s account earns 5% simple interest annually and Jill’s earns 5% interest compounded annually, how much will each account balance show at the end of 5 years? Calculate the

    asked by Dee
  100. math

    Ever wonder how much a house “actually” costs? Consider Alex and Sabrina who purchased a house with a selling price of $249,000.00. They managed to put 15% down and were approved for a 30-year conventional loan at 7% to cover the remaining $211,650.00.

    asked by Dee
  101. government

    Describe one or two ways in which the US government subsidies might affect the rate of production for petroleum within the US. Should the US use tax dollars to increase subsidies and thereby encourage more oil exploration and petroleum production

    asked by debbie
  102. Life orientation

    In 10-15 lines critically discuss 5 ways in which the human factor or environmental problem impacts on the community.

    asked by Life orientation
  103. Statistics

    Kyle averages 5 finished accounts a day. His standard deviation is 1 account per day and we want the percentile for a day where he finishes 8 accounts. The percentile will be between…

    asked by Anthony
  104. chemistry

    how many grams of magnesium carbonate are in a sample that has 1.58 x 10^24 oxygen atoms?

    asked by liz
  105. Algebra 2

    A farmer has 120 ft. of fencing available to enclose 2 adjacent rectangular pens alongside his barn. NO fencing is required along the bard side. He needs to have a total of 930 sq.ft. Determine the width (x) and the combined length of the pens. There are

    asked by Nancy
  106. French

    Est-ce qu'il y a quelqu'un qui peut lire mon rédaction français? J'ai fait un effort mais je ne sais pas si mes constructions sont correct et j'ai besoin d'aide pour ça. Peut quelqu'un m'aider? Naissance d’un grimpeur Le grimpeur Kiran Castelino

    asked by Kiran
  107. life orientation

    a clear explanation of how your chosen topic is human factor that may cause ill health,accident,crises or disaster(alcoholism)

    asked by meggie
  108. life orientation

    identify and describe one environmental problem that cause ill health,accidents,crises,and disasters within your community or any other community within south africa or globally

    asked by lesego
  109. Enviro Science

    4. The Earth's tectonic plates and earthquakes are related because a. most earthquakes take place at or near tectonic boundaries b. during an eruption, the plates slip past one another c. of the measure of energy released by the earthquake, called

    asked by mysterychicken
  110. critical thinking

    There are no chocolate stains on my hands, so I couldn’t have stolen the cookies.” Does this example require deductive or inductive logic?

    asked by jill
  111. Algebra

    help me solve this exponential problem P to the 3rd power times q 5 over 2 all over q to the 2nd power times r to the negative 6.

    asked by jeremy
  112. history

    one of president nixons goals was to reduce the number of nuclear weapons the united states had

    asked by alex
  113. CHEMISTRY URGENT!!!

    A hot-air balloon has a volume of 970 L at 28 degrees C . To what temperature must it be heated to raise its volume to 1200 L , assuming the pressure remains constant? so it would be 970L/28degreesC=1200L/x? I did that and I got 34.6 degrees C and when i

    asked by Anonymous
  114. Enviro Science

    23. Which of the following does NOT describe an effect of the Industrial Revolution? a. Fossil fuels became more important energy sources b. The amount of land and labor needed to produce food increased c. Artificial substances replaced some animal and

    asked by mysterychicken
  115. Chemistry

    Maleic acid is a carbon-hydrogen-oxygen compound used in dyeing and finishing fabrics and as a preservative of oils and fats. * In a combustion analysis, a 1.054-\rm g sample of maleic acid yields 1.599 \rm g of \rm CO_2 and 0.327 \rm g of \rm H_2O. * When

    asked by Shelby
  116. Life orientations

    Identify and describe one environmental problem that causes ill health,accidents,criser and disasters within your community or any other community within south africa or globally.

    asked by Letlhogonolo mktd
  117. intermediate algebra

    Factor using the AC method..6x^3-4x^2-10x

    asked by Lueshelle
  118. Visual & Performing Arts - Semester 1 Class

    When all the portions of an artwork are combined and seem to function collaboratively, the composition is said to have?

    asked by Emily
  119. Basic Dressmaking Processes

    In order to produce a professional- looking garment, pressing should be done?

    asked by linda
  120. Chemistry

    A 350 ml of gas at 1.25 atm and 298 K is heated to 343 K an the volume increased to 750.0ml. What is te new pressure?

    asked by Mikey
  121. science

    Use this reaction to answer the question: 2KClO3 -> 2KCl + 3O2. If I start with 65g KClO3, how many mol O2 will be formed? How many g O2? If I need to produce 299g KCl, how many mol of KClO3 do i need to start with? How many g KClO3?

    asked by Jennie
  122. Basic Dressmaking Processes

    What length of material do you need to purchase for the dress portion of the outfit?

    asked by linda
  123. Physics

    A scuba diver has an air tank with a volume of 0.010 m^3. The air in the tank is initially at a pressure of 1.0x10^7 Pa. Assume that the diver breathes 0.400 L/s of air. Find how long the tank will last at a depth of each of the following. (a) 1.0 m min

    asked by Romy
  124. Physics

    A 2.20 kg mass attached to a spring oscillates with a period of 0.440 s and an amplitude of 16.5 cm. (a) Find the total mechanical energy of the system (b) Find the maximum speed of the mass.

    asked by Nem
  125. science

    Use this reaction to answer the question: 2KClO3 -> 2KCl + 3O2 If I start with 65g KClO3, how many mol O2 will be formed? How many g O2? If I need to produce 299g KCl, how many mol of KClO3 do I need to start with? How many g KClO3?

    asked by Anonymous
  126. math

    Ricki Cohn Encyclopedia sales Commission rate: 11% Month’s sales: $2,550 What is the monthly commission?

    asked by Racheal
  127. algebra

    How far can you see to the horizon from a mountain top that has a height of 9000 m? Use the formula V= 3.5 sqrt h

    asked by Coach
  128. Algebra

    (6 times square root of 3 + square root of 5)(square root of 3 - 4 times the squae root of 5)

    asked by Jay
  129. Physics

    A 2.20 kg mass attached to a spring oscillates with a period of 0.440 s and an amplitude of 16.5 cm. (a) Find the total mechanical energy of the system (b) Find the maximum speed of the mass

    asked by Dev
  130. the sewing machine

    exam 042015

    asked by linda
  131. Chemistry

    carbon 14 has a half life of 5715 years. If you start with a 5 gram sample of 14C, what mass is left after 15,000 years?

    asked by Mima
  132. Algebra

    square of u - square root of v/ square root of u + square root of v.

    asked by Taurus
  133. chem

    a volume of 20. l of O2 os warmed from -30c to 85c what is the new volume if the pressure is kept constant

    asked by annie
  134. Algebra

    I do not understand radical equations. 12 times the square root of z-1=3 times the square root 3z+1050.

    asked by Taurus
  135. life orientation

    a clear explanation of how drug addiction is a human factor that may cause ill health,accidents,crises or disaster

    asked by lentokazi
  136. Spanish

    Yo sé jugar en equipo. What does this mean? Help please. Thanks.

    asked by Larry
  137. Social Studies

    The Confederate capital city was located 90 miles from the Union capital.What were they?

    asked by Neon
  138. acc 100

    Metzger Company compiled the following financial information as of December 31, 2010: Revenues $140,000 Metzger, Capital (1/1/10) 70,000 Equipment 40,000 Expenses 125,000 Cash 35,000 Metzger, Drawings 10,000 Supplies 5,000 Accounts payable 20,000 Accounts

    asked by Anonymous
  139. Social Studies

    How did Abe Lincoln begin the Gettysburg Address?

    asked by Neon
  140. 3 grade english ms sue

    compare and contrast when you compare and contrast two or more things,you tell how they are alike and different. some clue words that signal that things might be the same are like,same,both,also,and as well as. some clue words that signal differences are

    asked by dw
  141. Algebra

    I am trying to factor, but I can't seem to get this one. The question is: -15d*2*-2d+8. It is actually -15d squared but I didn't know how to right that without it being confusing. Anyways I changed it so now it says -1(15d-2d+8). Then I drew a diagram

    asked by Ella
  142. Physics

    A 34 g glass thermometer reads 21.6°C before it is placed in 135 mL of water. When the water and thermometer come to equilibrium, the thermometer reads 38.7°C. What was the original temperature of the water? I need help on this please could someone

    asked by Akbar
  143. math

    On the last math quiz, there were four A's, two B's, five C's, and one D's. If the math quizzes were returned to the students in random order, what is the probability that the first quiz returned to a student was an A or a B?

    asked by Anonymous
  144. math

    input: q 14 15 24 41 43 46 58 output: a 50 49 40 23 21 18 6 What is the rule:

    asked by blaine
  145. intermediate algebra

    The danville Express travels 280 miles at a certain speed.If te speed were increased by 5 mph the trip could have been made in 1 hr less time.What was the actual speed?

    asked by Lueshelle
  146. trig

    Prove that if Sinx=5/13 and Siny=12/13, where x and y angles in Q1, then Sin(x+y)=1

    asked by Anonymous
  147. physics

    A hypodermic needle consists of a plunger of circular cross-section that slides inside a hollow cylindrical syringe. When the plunger is pushed, the contents of the syringe are forced through a hollow needle (also of circular cross section). If a 4.0- N

    asked by lenny
  148. chemistry

    what is the mass of aluminum phosphate needed to create a .25M solution with 650 mL solution?

    asked by Shaunice
  149. chemistry

    what is the balanced equation for Mg+HNO3==>Mg(NO3)2+H2

    asked by Jay Jay
  150. 3 grade english ms sue

    write two sentences comparing two or more pets or other animals. use at least two adjectives that compare. underline the adjectives my son write (1)- my adorable lettle puppy is cuter than my cat. my son underline(adorable,cuter) my son write(2)- my tiny

    asked by dw
  151. chemistry

    what volume should the solution diluted to create a 2.0M solution with a 5g of potassium hydroxide?

    asked by Shaunice
  152. writing

    I'm writing a letter for personal reasons. There is a word I need help with, and I can't think of what it is. It kind of means knowing how far you're ok to go, knowing where your boundaries are, knowing where to draw the line, etc. The sentence is: I need

    asked by SoccerStar
  153. physics

    a car of mass 3000kg moving at 20m/s is suddenly brought to a stop when a deer crosses the road. if a braking force of 300,000 is needed to bring the car to a stop, what was the duration of the force?

    asked by mark
  154. chemistry

    For the reaction H2(g) + I2(g) ↔ 2 HI(g), you have the initial concentrations [H2] = 0.15 and [I2] = 0.05. Keq for the reaction at this temperature is 4.5 x 10-6. Make a reaction table. Include rows for initial concentration, change in concentration, and

    asked by Anonymous
  155. Physics

    A uniform rectangular sign of width 51.6 cm, height 25.2 cm, and negligible thickness hangs vertically from supporting hinges attached at its upper edge.

    asked by Dev
  156. American Lit.

    What is Fundamentalist-Modernist Controversy.? Is this one whole topic or more than one.?

    asked by David
  157. 6th G-Math

    1.Which of the following best describes the graph of x > 2 ? A. Closed dot at x = 2, and shading to the right B. Closed dot at x = 2, and shading to the left C. Open dot at x = 2, and shading to the right D. Open dot at x = 2, and shading to the left

    asked by Lauren
  158. Social Studies

    What did the north call the battle of Manassas?

    asked by Neon
  159. intermediate algebra

    Solve by factoring...2a^2+3=7a

    asked by Lueshelle
  160. intermediate algebra

    Solve....x(x-3)=x-9

    asked by Lueshelle
  161. Convergent/Divergent

    determine whether the series 1 + 1/2^5 + 1/3^5 + 1/4^5 +...is convergent or divergent? How do I tell the difference?

    asked by What's the Difference?
  162. financial planning problems

    During a job interview,Pam Thompson is offered a salary of 28,000.The company gives annual raises of 6 percent. What would be Pam's salary during her fifth year on the job?

    asked by gina
  163. Math

    x < 1 is a solution to which of the following inequalities? A. x + 2 < 3 B. x − 2 < − 3 C. x − 2 ¡Ü −1 D. both A and C

    asked by Jon
  164. Science

    Just to see, how do you measure inches from your hands to the ground with a ruler? Is it like how many inches are left from hands to ground?

    asked by Sholanda
  165. San

    Generaly, the farther away from the Equator one travels in Africa, the a. hotter the teperatures become b. drier the climate becomes c. higher the landform becomes d. denser the rainforest becomes

    asked by Ces
  166. Social Studies

    What Union general made a name for himself at the battle of Shiloh? Ulysses S.Grant?

    asked by Neon
  167. financal problems

    Computing future value. Calculate the future value of a retirement account in which you deposit 2,000 a year for 30 years with an annual interest rate of 7 percent.

    asked by gina
  168. Physics

    Calculate the magnitude of the force between two 3.95 µC point charges 7.4 cm apart

    asked by TotallyLost
  169. Social Studies

    Who was the leader of the Confederate States of America? Jefferson Davis? Who was the President elected serving during the Civil War? Abe Lincoln? The Confederate capital city was located 90 miles from the Union capital. What were they? Richmond,Virginia

    asked by Neon
  170. Math

    x < 1 is a solution to which of the following inequalities? A. x + 2 < 3 B. x − 2 < − 3 C. x − 2

    asked by Jon
  171. Math: Distance and Midpoint

    Three points on the edge of a circle are (-220, 220), (0, 0), and (200, 40), where each unit represents 1 foot. What is the diameter of the circle to the nearest 10 feet? I know the answer is supposed to be 550 ft, but I keep coming up with the wrong

    asked by Anonymous
  172. Physics

    1) Which control on a music player or television set allows you to increase or decrease amplitude of the sound waves that come out of it? 2)Ripple tanks are used to observe two-dimensional waves. What should be the name of the amplitude control for

    asked by G
  173. chemistry

    A mass of 7 kg of water is raised from 8 degrees C to the boiling point 100 degrees C. How much heat is required? The specific heat of water is 1000 cal/kg · degrees C. Answer in units of cal

    asked by please help
  174. chemistry

    You have 53 g of aluminum at25 degrees C. How much heat must be added to raise its temperature to 139 degrees C? Assume the specific heat of aluminum is 903 J/kg · degrees C. Answer in units of J

    asked by please help
  175. Social Studies

    Because General Thomas J.Jackson stood his ground at the First Battle of Bull Run,his troops nicknamed him what? Thomas "Stonewall" Jackson? The Civil War began when the south fired on Fort Sumter.What city/state is Fort Sumter in? Charleston,South

    asked by Neon
  176. English

    Can you please help express the concept below? Thank you, Writeacher. I was last proud of myself when I got an A in maths/when I got a 7 and a half (according to the Italian grade system) in maths.

    asked by Mike1
  177. Geometry

    If you stand at stree level, the angle of elevation to a buildings tenth-story window is great than the angle of elevation to one of its ninth-story windows.

    asked by zach
  178. math

    Evaluate the factorial expression 8!/6! Use the formula for nPr: How many arrangements can be made using the letters of the word HYPERBOLAS if no letter is to be used more than once.

    asked by Anonymous
  179. physics

    A scuba diver has an air tank with a volume of 0.010 m^3. The air in the tank is initially at a pressure of 1.0x10^7 Pa. Assume that the diver breathes 0.400 L/s of air. Find how long the tank will last at a depth of each of the following. (a) 1.0 m min

    asked by Romy
  180. Chemistry

    What is the smallest whole-number ratio of ions in a crystal lattice?

    asked by Shea
  181. Chemistry

    A 1.8 mole sample of a compound weighs 195 g and is found to be 11.18% H and 88.82% C. What is the molecular formula for the compound?

    asked by annabel
  182. geometry

    If the ratio of the interior angle to the exterior angle is 5:1 for a regular polygon, find a. the size of each exterior angle b. the number of sides of the polygon c. the sum of the interior angles d. Name the polygon

    asked by jodi
  183. physics

    A 34 g glass thermometer reads 21.6°C before it is placed in 135 mL of water. When the water and thermometer come to equilibrium, the thermometer reads 38.7°C. What was the original temperature of the water? I need help on this please could someone

    asked by Akbar
  184. pre-calc HELP PLEASE

    solve using identities for all angles (dont use multiple angle method)show work please cuz i am so confused. 2sin2x-3sinx=0

    asked by Kimberly
  185. Social Studies

    What did the confederate soldiers call the Union soldiers? Yankees? What did the union soldiers call the confederate soldiers? Rebels? Name the Confederate Iron Clad ship? Merrimack? How did Stonewall Jackson get shot? Was shot during the Battle of

    asked by Neon
  186. geometry

    the net of a square pyramid has a base of 3cm by 3cm and each slant side is 5cm. Include the flaps. Find the total surface area of the prism.

    asked by jodi
  187. algebra

    The Creekside Theater is putting on a p lay. The Hanson family bought five adult tickets and two child ticke ts for $129.00. The Rivera family bought two adult tickets and six child tickets for $107.50. Write a system of equations to represent this

    asked by johnetta
  188. geometry

    A trailer driver left Miami at 15:45 and arrived at his destination 637.5 km away at 02:15 the next day. a. How long did the jpurney take? b. What was his average speed in km/h c. What was his average speed in ms^-1

    asked by jodi
  189. Calculus. Please!! i need help so bad!!!

    1. Graph y =sec(1/2O-2pi)– 3. the O after the 2 has a slash through it 2. Write an equation for tangent given the period, phase shift, and vertical shift. period = 1/3pi , phase shift = –1/4pi, vertical shift = –5

    asked by heather
  190. Algebra

    (8-i)^2(8+i)^2

    asked by Jay
  191. Social Studies

    What river did the Union succeed in capturing with the victory at Vicksburg? Mississippi River? General Sherman carried out a campaign of destruction.What city did he begin his march to sea? Atlanta? What were 2 purposes for Lincoln issue of the

    asked by Neon
  192. Psysics (Magnetism)

    A current-carrying wire is placed in a uniform magnetic field, but there is no magnetic force on it. How is this possible?

    asked by Brooke
  193. Algebra

    (8-i)^2(8+i)^2

    asked by Jay
  194. geometry

    a closed box of uniform thickness is made of wood 1cm thick. Its extenal dimensions are 6cm and 5 cm by 4 cm. Find the a. volume of the wood used in making the box. b. the capacity of the box, given that the cover is full length and full width c. The

    asked by lindsay
  195. Algebra

    Will you explain the concept of "i" in algebra? Problem: 4+2i/4-2i

    asked by Lee
  196. chemistry

    A 0.185 M solution of a monoprotic acid has a percent ionization of 1.55%. Determine the acid ionization constant (Ka) for the acid.

    asked by cindy
  197. geometry

    the diagonal VY of a cuboid =root(26.25)cm, the length of a side ZY = 4cm and the height of a sideUZ =25cm for the cuboid. Find the width of the width UV.

    asked by lindsay
  198. Math

    A student at St. F. X. decided to become his own employer by using his car as a taxi for the summer. It costs the student $693.00 to insure his car for the 4 months of summer. He spends $452.00 per month on gas. If he lives at home and has no other

    asked by Rezu
  199. Math

    Three ducks and two ducklings weigh 32 kg. Four ducks and three ducklings weigh 44kg. All ducks weigh the same and all ducklings weigh the same. What is the weight of two ducks and one duckling? 20kgs?

    asked by Rezu
  200. Math

    14/25 as a fraction decimal percent

    asked by Leslie
  201. Science

    Three negatively charged sphere, each with a charge of a 4*10^-6C, are fixed at the vertices of an equilateral triangle whose sides are 20cm long. Calculate size and direction of the net electric force on each sphere.

    asked by Tsoanelo
  202. Calculus

    assume that f(x)= x^3(x-2)^2 a) find the x-intercepts algebraically b) find all the critical points c) use the first derivative test to determine local minimums and maximums d)find all inflection points e)state the concavity of the graph on appropriate

    asked by Elaine
  203. science

    What are the UV ray statistics from 2002-2012?

    asked by Joseph
  204. Math

    Solve the equation symbolically x+7/8=x+8/9

    asked by Kris
  205. Chemistry

    A solution contains 1.50 g of dissolved Pb 2+ ions. How many grams of NaI must be added to the solution to completely precipitate all of the dissolved Pb 2+ as PbI2?

    asked by annabel
  206. Math

    A rectangular chalk board is 3 times as long as it is wide. If it were 3 metres shorter and 3 metres wider, it would be square. What are the dimensions of the chalk board? 3 meters wide 9 meters long

    asked by Rezu
  207. Science

    Three negatively charged spheres, each with a charge of 4*10^-6C are fixed at the vertices of an equilateral triangle wise sides 20cm. Calculate the size and direction of the net force on each sphere.

    asked by Tsoanelo
  208. mathematic

    ellen has 11 pennies she has 1 fewer dimes how many dimes does she have?

    asked by shakari
  209. statistics

    The ages of commercial aircraft are normally distributed with a mean of 13.0 years and a standard deviation of 7.5 years what percentage of individual aircraft have ages greater than 15 years assume that a random sample of 49 aircraft is selected and the

    asked by Tanya
  210. algebra

    How far can you see to the horizon from a mountain top that has a height of 9000 m? Use the formula V= 3.5 sqrt h

    asked by Coach
  211. math

    9(x-5)=4x-5 solve for x. please help me with this one and show the work so i can understand

    asked by kacey
  212. My Course Grade

    I have class average of 85.74. i got 63 in final which 15 of the class . what will be my my overall class average . Thank you in advance.

    asked by shama
  213. physics

    what is the mass of a playset that is moved with 580n of force for 11 seconds at 1.5 m/s?

    asked by Ray
  214. English - ms. sue

    for glass castle memoir i finally get assignment ms. sue i write persuasive essay, b/w deduction and induction i think deduction be easy cause i only hve to support my main points. i need to do it on dad. i not know what topic to do it on, and how to

    asked by Mohammad
  215. math

    using three dimensional objects. trace one face of a cone. trace one face of a pyramid.

    asked by matt
  216. Math

    Need to find equation for 1250=1200+4-375. Is this possible or impossible. Need to find how to figure these type of questions. This is 3rd grade homework

    asked by Justin
  217. chemistry

    Calculate the pH and percentage protonation of the solute in an aqueous solution of 0.39 M quinine if the pKa of its conjugate acid is 8.52.

    asked by bob
  218. algebra

    Mrs Acres will draw a circle on the playground for a game in gym class.The circle will havw a diameter of 16 feet.What is the circumference of the circle that Mrs Acres will paint?

    asked by Katie
  219. physics

    Billiard ball A of mass m_A = 0.130 kg moving with speed v_A = 2.50 m/s strikes ball B, initially at rest, of mass m_B = 0.145 kg. As a result of the collision, ball A is deflected off at an angle of 31.0 degree, with a speed v_A1 = 2.05 m/s. Write down

    asked by Caylee
  220. algebra

    Ms. Lembright ordered the types of muffins below for a class party. • 12 blueberry muffins for $7.20 • 8 chocolate muffins for $4.40 • 6 raisin muffins for $4.50 What type of muffin costs the least?

    asked by Anonymous
  221. Differential Equations

    solve using variation of parameters: y"+36y=[csc(6t)]^2 I don't understand variation of parameters very well at all.

    asked by Rosy
  222. Math

    Simplify 5^1/3 /2(3)^1/2 - 2^1/2

    asked by Hanu
  223. nursing

    i have to do matching and i can not figure theses out please help me!!! __1. annual evaluations __2. positive attitude __3. self- discipline __4.medical assistant __5. break-time __6. cooperation __8.team work __9. job descriptions __10.good rapport c.

    asked by cass
  224. chemistry

    What is the molarity of each kind of ion in a solution of magnesium chloride that contains 29.0 g of magnesium chloride dissolved in enough water to make 1.73 L of solution? MgCl2 Mg2+ + 2 Cl-

    asked by megan
  225. Ms, Sue, I have a question for you.

    I need people to take an online survey for me. Don't worry, it's completely virus free. It's about factory farming, but it won't let me share a link here. I need more people to take it. So, can you allow me to post the link? Please?

    asked by Mariella
  226. chemistry

    the heat of vaporizaton of water is 2.26kJ/g. How much heat is needed to change 4.2 g of water to steam.

    asked by Randy
  227. chemistry

    the heat of fusion of water is 335 J/g. How much heat would be required to melt 97.8 g of ice

    asked by Randy
  228. chem

    calculate the concentration of borate ion for a titration when 6.0998g borax is dissolved in 100mL of water and titrated with 25.5mL of HCl

    asked by Jess
  229. College Accounting

    How do the entries affect account balances and why both debit and credit entries can increase or decrease an account balance?

    asked by shanty
  230. psy statistics

    A study wants to examine the relationship between student anxiety for an exam and the number of hours studied. The data is as follows: Student Anxiety Scores Study Hours 5 1 10 6 5 2 11 8 12 5 4 1 3 4 2 6 6 5 1 2 Why is a correlation the most appropriate

    asked by meto
  231. chemistry

    the heat of fusion water is335 J/g. The heat of evaporization of water is 2.26 kJ/g, the specific heat of ice is 2.05 J/Deg/g, the specific heat of steam is 2.08 J/deg/g and the specific heat of liquid water is 4.184 J/deg/g. How much heat would be needed

    asked by Randy
  232. algebra 2

    When you spend $1 at the grocery store, the store doesn’t keep all of your money as profit. Some of it is reinvested in the economy when the grocery store buys more merchandise from suppliers. In turn, the suppliers don’t keep all of that money as

    asked by sam
  233. Chemistry

    An aqueous solution contains 0.196 M hydrosulfuric acid and 0.190 M hydrochloric acid. Calculate the sulfide ion concentration in this solution. [S2-] = _________mol/L.

    asked by Ana
  234. math

    The mean of a set of 51 data points is 3.04. If a data value of 16 were added to the data set, what would be the approximate value of the new mean?

    asked by coal
  235. physics

    A 10kg block is released from the top of a ramp 45m high. the track is frictionless except for a 6m stretch in the middle. when the block reaches the end, it compresses the k=2250N/m spring a distance of 0.030m. Find the coefficient of friction over the

    asked by Anonymous
  236. chemistry

    How many moles of ions (cations and anions) are contained in 1.2 L of a 1.9 M solution of KCl? KCl K+ + Cl-)

    asked by megan
  237. chemistry

    How many moles of ions are contained in 1.4 L of a 1.6 M solution of Mg(NO3)2?

    asked by megan
  238. spanish

    Necesito al doctor Ramírez, un médico que mucha experiencia en cirugías

    asked by Anonymous
  239. chemistry

    given the following data: S(s)+3/2 O2(g)->SO3(g) H=-395.2 kj 2SO2(g)+ O2(g)->2SO3(g) H=-198.2kj calculate H for the reaction S(s)+ O2(g)->SO2(g)

    asked by rame
  240. Auburn

    Have a sack of jelly beans-5 different colors-half are red 1/6 green 1/6 yellow 1/12 blue 6 black-how many of each color and how many in all

    asked by Rose
  241. chemistry

    A solution contains 1.72 10-3 M Ca(NO3)2. Determine the mass of the Ca2+ ions in 1.8 mL of this solution. How many nitrate ions are there in 3.0 10-6 L (3.0 µL) of this solution? (i keep doing these two wrong but not sure why)

    asked by katiy
  242. help please

    when is the best time to read reveiw or discussion a Question? a. immediately after you have finished all of the reading b. after you write your note c.before you begain any detailed reading d. throughout your detailed reading

    asked by zully
  243. math

    help me ..... Consider the function f(x)= -cos3x -4sin3x. (a)Find the equation of the line normal to the graph of f(x) when x= pie/6 . (b)Find the x coordinates of the points on the graph of f(x) where the tangent to the graph is horizontal. (c)Find the

    asked by weloo_volley
  244. math

    help me ..... Consider the function f(x)= -cos3x -4sin3x. (a)Find the equation of the line normal to the graph of f(x) when x= pie/6 . (b)Find the x coordinates of the points on the graph of f(x) where the tangent to the graph is horizontal. (c)Find the

    asked by weloo_volley
  245. math

    hilp meeee trying .... Consider the two parabolas :y1=2x^2-3x-1 and y2=x^2+7x+20. (a) Find the points of intersection of the parabolas and decide which one is greater than the other between the intersection points. (b) Compute the area enclosed by the two

    asked by weloo_volley
  246. calculus

    A drone aeroplane is flying horizontally to a constant height of 4000 ft above a fixed radar tracking station. At a certain instant the angle of elevation theta is 30 degrees and decreasing, and the speed of the aeroplane is 300 mi/h a) How fast is theta

    asked by Paige