Questions Asked on
February 18, 2011

  1. physics

    A firefighter a distance d from a burning building directs a stream of water from a fire hose at angle θi above the horizontal as in the figure. If the initial speed of the stream is vi, at what height h does the water strike the building? (Use theta for

    asked by eric
  2. physics

    A projectile is fired in such a way that its horizontal range is equal to 8.5 times its maximum height. What is the angle of projection?

    asked by eric
  3. Math- Please Help!!

    An airplane has an airspeed of 724 kilometers per hour at a bearing of 30 degrees.The wind velocity is 32 kilometers per hour from the west. What are the groundspeed and the direction of the plane?

    asked by Kourt
  4. physics

    A boy can throw a ball a maximum horizontal distance of R on a level field. How far can he throw the same ball vertically upward? Assume that his muscles give the ball the same speed in each case. (Use R and g as appropriate in your equation.)

    asked by Anonymous
  5. Chemistry

    Calculate the pH of a 0.250M solution of Sulfurous acid, H2SO3.

    asked by Josh
  6. physics

    In a local bar, a customer slides an empty beer mug down the counter for a refill. The bartender is momentarily distracted and does not see the mug, which slides off the counter and strikes the floor at distance d from the base of the counter. The height

    asked by eric
  7. physics

    A boy can throw a ball a maximum horizontal distance of R on a level field. How far can he throw the same ball vertically upward? Assume that his muscles give the ball the same speed in each case. (Use R and g as appropriate in your equation.)

    asked by Anonymous
  8. economics

    Which of the following is given as a reason for nations NOT to engage in free trade? A) Free trade gives consumers access to goods they might not otherwise be able to consume B) Tariffs are a good source of revenue for a nation C) Trade is shown to promote

    asked by KEVIN
  9. sociology

    1. What aspects of the social and work environment in a fast-food restaurant would be of particular interest to a sociologist because of his or her sociological imagination.

    asked by Anonymous
  10. physics

    A fireworks rocket explodes at height h, the peak of its vertical trajectory. It throws out burning fragments in all directions, but all at the same speed v. Pellets of solidified metal fall to the ground without air resistance. Find the smallest angle

    asked by eric
  11. chemistry

    sodium chloride+water+ethanol+oxygen+carbon dioxide+water+sodium chloride=

    asked by towela
  12. MATH

    Prove that the correlation coefficient r lies between -1 and +1.

    asked by Sujit
  13. Math

    An airplane has an airspeed of 724 kilometers per hour at a bearing of 30 degrees.The wind velocity is 32 kilometers per hour from the west. What are the groundspeed and the direction of the plane?

    asked by Kourt
  14. physics

    A basketball star covers 2.70 m horizontally in a jump to dunk the ball (see figure). His motion through space can be modeled as that of a particle at a point called his center of mass (which we shall define in Chapter 9). His center of mass is at

    asked by eric
  15. AP physics 2

    You are moving into an apartment and take the elevator to the 6th floor. Suppose your weight is 790 N and that of your belongings is 1080 N. (a) Determine the work done by the elevator in lifting you and your belongings up to the 6th floor (15.2 m) at a

    asked by Johnny
  16. physics

    An arrow is short vertically upward with an initial speed of 25m/s. When it's exactly halfway to the top of its flight, a second arrow is launched vertically upward from the same spot. The second arrow reaches the first arrow just as the first arrow

    asked by Mary
  17. geometry

    the angle of depression from d to f measures 10 degrees. if df equals 300m, find df. round to the nearest tenth.

    asked by tyler
  18. Geography

    Is the smallest country in Africa Equatorial Guinea? Or could it possibly be Djibouti?

    asked by Alyonka
  19. physics

    A car travels due east with a speed of 35.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth. The traces of the rain on the side windows of the car make an angle of 70.0° with the vertical. Find the velocity of the rain

    asked by Anonymous
  20. physics

    A dive bomber has a velocity of 235 m/s at an angle θ below the horizontal. When the altitude of the aircraft is 2.15 km, it releases a bomb, which subsequently hits a target on the ground. The magnitude of the displacement from the point of release of

    asked by eric
  21. physics

    A rock is thrown upward from the level ground in such a way that the maximum height of its flight is equal to its horizontal range d. (a) At what angle θ is the rock thrown?

    asked by eric
  22. Physics

    An electron is at the origin. (a) Calculate the electric potential VA at point A, x = 0.410 cm. (b) Calculate the electric potential VB at point B, x = 0.820 cm. What is the potential difference VB - VA?

    asked by Greg
  23. Chemistry

    Samples of Neon and helium are placed in separate containers connected by a pinched rubber tube. There is 5.00 liters of neon at a pressure of 634 mm Hg in the first container. The second container has 3.00 liters of helium at 522 mm Hg. When the clamp is

    asked by T
  24. Calculus 3

    Determine whether the lines intersect(have a common point) and if so, find the coordinates of that point? r(t) = < 4t+3, 4t + 2, 6t + 6>, for -infinity < t < infinity R(s) = < s + 2, 3s - 1, -4s + 10>, for -infinity < t < infinity And if r and R describe

    asked by Z32
  25. PHYSICS

    1....How much force needed to bring a 3200 lb car from rest to a velocity of 44 m/s in 8 sec.? 2....A ball with a mass of 2 kg move to the right with a speed of 2 m/s. It hits a ball of mass 0.50 kg which is at rest. After collision the second ball moves

    asked by EM
  26. Finance Homework

    Washington-Pacific invests $2 million to buy a tract of land and plant some young pine trees. The trees can be harvested in 15 years, at which time W-P plans to sell the forest at an expected price of $4 million. What is W-P's expected rate of return?

    asked by Shan
  27. engr 109

    Calculate the resistance of a 1 mile length of wire if the conductivity (sigma) is 5.7x10^5 (ohm-cm)^-1 and the diameter of the wire is 1 inch. The formula for resistance is R = length/(sigma*Cross-sectional area) but all of the units must be consistent.

    asked by r
  28. Chemistry-Practical Applications

    What are some practical applications of London dispersion forces? And the rule like dissolves like besides making antichap lipstick? Thank you!

    asked by Jenny
  29. Physics

    A proton is located at the origin, and a second proton is located on the x-axis at x = 5.58 fm (1 fm = 10-15 m). (a) Calculate the electric potential energy associated with this configuration. 1 (b) An alpha particle (charge = 2e, mass = 6.64 10-27 kg) is

    asked by Greg
  30. Math

    Gina flew from Toronto to Chicago and back again. The average speed of the plane was 332 km/h to Chicago and 415 km/h back to Toronto. If the actual flying time for the round trip was 4.5 h, how far is it from Toronto to Chicago?

    asked by Jen
  31. science

    Imagine that you are riding a bus. A girl gets on, and you recognize her as someone you know but have not seen for two years. 1. What are the roles of the central nervous system and the peripheral nervous system in allowing you to recognize the person and

    asked by megan
  32. hcs/335

    What are managerial responsibilities related to administrative ethical issues, such as patient confidentiality (HIPAA)?

    asked by bobbi
  33. physics

    An enemy ship is on the east side of a mountain island, as shown in the figure. The enemy ship has maneuvered to within d1 = 2153 m of the h = 1690 m high mountain peak and can shoot projectiles with an initial speed of vi = 247 m/s. If the western

    asked by Anonymous
  34. physics

    If the speed of light through material Z is 2.5×108 m/s, what is this material’s index of refraction? The speed of light in a vacuum is 3 × 108 m/s.

    asked by Maria
  35. physics

    A race car starts from rest on a circular track. The car increases its speed at a constant rate at as it goes 2.75 times around the track. Find the angle that the total acceleration of the car makes with the radius connecting the center of the track and

    asked by eric
  36. physics

    A soccer player kicks a rock horizontally off a 40.0 m high cliff into a pool of water. If the player hears the sound of the splash 3.04 s later, what was the initial speed given to the rock? Assume the speed of sound in air to be 343 m/s.

    asked by eric
  37. Math

    An advertisement is to contain 75 sq.cms of printed area. There is a 2cm margin at the bottom, 3cm margin in each side and no margin at the top. Find the dimensions of the smallest possible poster.

    asked by Sujit
  38. physics

    A ray of light has an angle of incidence of 30.4 degrees on a block of quartz and an angle of refraction of 20.7 degrees. What is the index of refraction for this block of quartz?

    asked by Maria
  39. physics

    A fisherman sets out upstream from Metaline Falls on the Pend Oreille River in northwestern Washington State. His small boat, powered by an outboard motor, travels at a constant speed v in still water. The water flows at a lower constant speed vw. He has

    asked by Anonymous
  40. Geometry

    Which shows the correct coordinates for the reflection of the point over the line y = -4 a. (-6,9)->(-6, 17) b. (-6,9)->(6,-17) c. (-6,9)->(-10,-9) d. (-6,9)->(2,-9) I how to reflect over a line. Can you help me please?

    asked by Christina
  41. physics

    A science student is riding on a flatcar of a train traveling along a straight horizontal track at a constant speed of 12.0 m/s. The student throws a ball into the air along a path that he judges to make an initial angle of 60.0° with the horizontal and

    asked by Anonymous
  42. GED MATH

    You are given an equation of the form y = ax2 + bx + c. y = 4x2 + 2x − 3 (a) Use a graphing utility to graph the equation and to estimate the x-intercepts. (Use a zoom-in process to obtain the estimates; keep zooming in until the first three decimal

    asked by sakina
  43. Chemistry

    What's the relationship between ionization energy and electron affinity? I ionization eneergy deals with losing electrons and electron affinity deals with gaining electrons, but I don't know how to explain the relationship.

    asked by Emily
  44. math

    What is the maximum number of glass tumblers each with a circumference of inches that can be placed rectangular on a table of 48" x 32". (a) 48 (b) 32 (c) 50 (d) 96

    asked by Anonymous
  45. social studies

    I need a copy of the florida studies weekly for week 16. I tried to find the magazine online and cant. Do you know of any web site that might have it so I can read it and answer the questions?

    asked by Brianna
  46. chemistry /help please

    can someone please help me balance this equation?: potassium permanganate reacts with iron(II)sulfate and sulfuric acid to produce iron(II)sulfate and manganese(II)sulfate and potassium sulfate and water

    asked by joy
  47. physics

    A small archerfish (length 20 to 25 cm) lives in brackish waters of Southeast Asia from India to the Philippines. This aptly named creature captures its prey by shooting a stream of water drops at an insect, either flying or at rest. The bug falls into the

    asked by Anonymous
  48. physics

    Tarzan tries to cross a river by swinging from one bank to the other on a vine that is 9.0 m long. His speed at the bottom of the swing is 8.8 m/s. Tarzan does not know that the vine has a breaking strength of 1.0 103 N. What is the largest mass that

    asked by brian
  49. english

    I was given an assignment to write a one paragraph essay. I need you to pls help me with my essay on "the sniper" by liam o'flaherty. you can tell me where i went wrong and anyother thing. This is my essay so far: War knows no boundaries(age, sex, location

    asked by ted
  50. physics

    A Coast Guard cutter detects an unidentified ship at a distance of 16.7 km in the direction 13.8° east of north. The ship is traveling at 24.9 km/h on a course at 39.2° east of north. The Coast Guard wishes to send a speedboat to intercept the vessel and

    asked by Anonymous
  51. chemistry

    Write down the correct mechanism for the reaction between 3-methyl-2-pentene and HCL?

    asked by ben
  52. Physics

    A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.93 V and a current of 2.7 A are induced in the coil. The wire is the re-formed into a single-turn square coil, which

    asked by Emily
  53. physics

    Identify the area of physics that is most relevant to each of the following situations. a)A high school football game b)Food preparation for the prom c)Playing in the school band d)Lightning in a thunderstorm e)Wearing a pair of sunglasses outside in the

    asked by nancy
  54. Econ

    Consider the following consumption function. C = 200 + .75(DPI), Where C is consumption, autonomous spending is 200, the MPC is .75, and DPI is disposable personal income. Using the Graph below, graph the Consumption Function. C 100 0 = Income On the

    asked by ben
  55. physics

    A slab of copper of thickness b = 1.566 mm is thrust into a parallel-plate capacitor of C = 4.00×10-11 F of gap d = 10.0 mm, as shown in the figure; it is centered exactly halfway between the plates. If a charge q = 3.00×10-6 C is maintained on the

    asked by Mike
  56. Mathematics, physical, science agricultural science, life science english

    What it means to be a grade 12 learner?

    asked by Anonymous
  57. chemistry/HELP PLLEASE

    can someone please help me balance this equation?: potassium permanganate reacts with iron(II)sulfate and sulfuric acid to produce iron(II)sulfate and manganese(II)sulfate and potassium sulfate and water

    asked by joy
  58. math

    one taxi charges 75 cents for the first quarter-mile and 15 cents for each additional quarter-mile. the second company charges $1.00 for the first quarter-mile and 10 cents for each additional quarter mile. What distance would produce the same fare for the

    asked by Anonymous
  59. College Chemistry

    The molar heat of reaction, H rxn, for the reaction of Ca(s) + 2H+(aq) Ca2+(aq) + H2(g) is -544.789 kJ/mol and Hrxn, for the reaction of CaO(s) + 2H+(aq) Ca2+(aq) + H2O(l) is -192.42 kJ/mol, the heat of formation of water is -286 kJ/mol, The H ffor CaO(s)

    asked by HELP PLEASE!
  60. Finance Homework/ Have 2nd Part Need Calculate1st

    An investment will pay $100 at the end of each of the next 3 years, $400 at the end of Year 4, $600 at the end of Year 5, and $700 at the end of Year 6. If other investments of equal risk earn 8% annually, what is its present value? What is its future

    asked by Mat
  61. physics

    Tarzan tries to cross a river by swinging from one bank to the other on a vine that is 9.0 m long. His speed at the bottom of the swing is 8.8 m/s. Tarzan does not know that the vine has a breaking strength of 1.0 103 N. What is the largest mass that

    asked by brian
  62. calc

    f(x)=3x^ln(x), find f '(9). i can't find the answer :( I got 3x^lnx(((ln(lnx))/x)+ 1/lnx)

    asked by yoo
  63. Probability

    A coin is tossed 3 times. What is the probability of getting 2 heads and 1 tail?

    asked by Elizabeth
  64. english

    Review the four paragraphs below. There is one paragraph matching each of the following types: summary, analysis, synthesis, and evaluation. Once you have read each paragraph, complete the following chart to identify the type of paragraph for each.

    asked by jub
  65. Physics (please help!!)

    A suitcase of weight mg = 450 is being pulled by a small strap across a level floor. The coefficient of kinetic friction between the suitcase and the floor =0.640 a) Find the optimal angle of the strap above the horizontal. (The optimal angle minimizes the

    asked by Catherine
  66. english

    I am having some serious problems with parallelism. I do not understand how to use parallelism. I've read the lesson in my textbook and I've looked at different websites that help explain it, but I just can't get it. Can anyone break this down in "layman's

    asked by Andy
  67. Physics

    When a mass of 28 g is attached to a certain spring, it makes 18 complete vibrations in 4.1 s. What is the spring constant of the spring? Answer in units of N/m.

    asked by Sangita
  68. Music

    List at least 2 similarities and 4 differences found through comparing the music, the music traditions, performing, etc., of Europe and Sub-Saharan Africa.

    asked by Freddy
  69. college chemistry

    .361 g of a non-volatile solute is dissolved in 160.0 g of water. The solute does not react with water nor dissociate in solution. Assume that the resulting solution displays ideal Raoult's law behaviour. At 90 oC the vapour pressure of the solution is

    asked by silver
  70. AP physics

    A water skier, moving at a speed of 8.61 m/s, is being pulled by a tow rope that makes an angle of 34.9 ° with respect to the velocity of the boat. The tow rope is parallel to the water. The skier is moving in the same direction as the boat. If the

    asked by Johnny
  71. math

    Two batsmen A and B made the following scores in a series of cricket matches:- A: 14 13 26 53 17 29 79 36 84 49 B: 37 22 56 52 14 10 37 48 20 4 Who is more consistent? (Answer on basis of Karl Pearson’s measure of coefficient of variation, taking 35 as

    asked by Sujit
  72. Chemistry

    How many total moles of ions are released into water when 0.50 moles of calcium perchlorate are dissolved in a liter of water?

    asked by Diane
  73. Language Art

    I'm writing an essay and the topic is " Should student be able to go on dangerous field trip like rock climbing?" I'm disagreeing to this and I need 3 reason why. These are my 2 reason, could anyone give me another 3 or just 1? Thanks - Students will be

    asked by Shadow
  74. Physics

    A uniform electric field of magnitude 410 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 3.00 cm. (a) What is the work done by the field on the electron?(b) What is the change in potential

    asked by Greg
  75. anonumoys

    A volleyball is spiked so that it has an initial velocity of 14 m/s directed downward at an angle of 61° below the horizontal. What is the horizontal component of the ball's velocity when the opposing player fields the ball?

    asked by Anonymous
  76. math

    a recipe call for 1.5 cups of mix to make 8 pancakes. John wants to make 12 pancakes and uses 2 cup of mix. Does John have the correct ratio for the recipe

    asked by annie
  77. Physics (please help!!!!)

    A suitcase of weight mg = 450 is being pulled by a small strap across a level floor. The coefficient of kinetic friction between the suitcase and the floor =0.640 a) Find the optimal angle of the strap above the horizontal. (The optimal angle minimizes the

    asked by Catherine
  78. social studies

    what aspects of a fast food restaurant would interest sociologists

    asked by jam
  79. Math 209

    Draining the vat. With only the small valve open, all of the liquid can be drained from a large vat in 4 hours. With only the large valve open, all of the liquid can be drained from the same vat in 2 hours. How long would it take to drain the vat with both

    asked by Tiffany
  80. jj

    Find the percent of increase or decrease. Round your answer to the nearest percent. Original Amount: $6.50, New Amount: $11.50, Percent of Change: ___%

    asked by Anonymous
  81. physics

    A fireworks rocket explodes at height h, the peak of its vertical trajectory. It throws out burning fragments in all directions, but all at the same speed v. Pellets of solidified metal fall to the ground without air resistance. Find the smallest angle

    asked by Anonymous
  82. stats

    a test consists of 25 multiple choice questions. Each has 5 possible answers, which only one is correct. If a student guesses on each question, find the following: a) prob that he will guess all of them right b)prob that he will guess at most 12 right c)

    asked by gio
  83. 9th grade math

    the triange is 31cm, side 1 and side 2 have equal lenghts, while side 3 is one centimeter shorter than twice then length of side 1, how long is each side?

    asked by Greg
  84. Trig

    find (s+t) given that cos s=1/3 with s in quad I and sin T=-1/2 with t in quad IV

    asked by Paige
  85. Algebra HELP

    Can someone check my answers? Solve for m: m + 6 = 3(2m - 4) a.4 b.-6/5 c.18/5 d.2 answer: c. 18/5 Solve the equation and check your solution: 3(x + 6) = 18 + 3x a. -6 b. 0 c. all real numbers d. no solution answer: b. 0 Solve the equation and check your

    asked by Cheryl
  86. Calculus 2nd Post please help

    Find an equation of the tangent line to the graph of the function f defined by the following equation at the indicated point. (x - y - 1)3 = x; (1, -1)

    asked by Anonymous
  87. foundationd of personal finance

    . List two ways to begin putting aside money for investments. You can often save money by making small changes. Share one tip you think may help save some money in the long-run.

    asked by Anonymous
  88. math

    rule y=4x-5 input 3,5,7 help me find out the output values

    asked by irene
  89. Chemistry

    Please :) N2H4(g) + H2(g) 2 NH3(g) H1 = –1876 kJ 3 H2(g) + N2(g) 2 NH3(g) H2 = –922 kJ The H f for the formation of hydrazine: 2 H2(g) + N2(g) N2H4(g) will be_____kJ/mol.

    asked by HELP!
  90. Economics

    At quantity of 8000, TR 3625, TC 3310, MR 100, MC 22 How many papers should the manager of El Dorado Star print and sell daily

    asked by Maria
  91. physics

    a golf ball is hit off a tee witha speed of 50m/s at an angle of 37 degrees above the horizontal. At what two values of x (horizontal distance from the tee) will the ball be 25m above the ground?

    asked by anya
  92. chemistry

    can someone please help me balance this equation?: potassium permanganate reacts with iron(II)sulfate and sulfuric acid to produce iron(II)sulfate and manganese(II)sulfate and potassium sulfate and water

    asked by joy
  93. Physics

    A tube with a length L is closed at both ends and is filled with air. The wavelength of the fundamental mode of this tube is given by L*c, where c is a dimensionless constant. What is this constant, c, numerically? Also, the frequency of the first overture

    asked by George
  94. Physics

    A Force,F=10N,applied at an angle of 37 degree above the horizontal,moves a crate a distance of 5m along a rough horizontal surface.A frictional force of 5N opposes the motion.what is the change in kinetic energy?

    asked by Joel
  95. physics

    An astronaut on the surface of Mars fires a cannon to launch an experiment package, which leaves the barrel moving horizontally. Assume that the free-fall acceleration on Mars is three eighths that on the Earth.(a) What must be the muzzle speed of the

    asked by Anonymous
  96. physics

    As some molten metal splashes, one droplet flies off to the east with initial speed vi at angle θi above the horizontal, and another droplet flies off to the west with the same speed at the same angle above the horizontal, as inthe figure. In terms of vi

    asked by Anonymous
  97. math 156

    june wants to work for 15 1/2 hours at her part-time job this week. she has already worked 8 3/4 hours. how many more hours does she need to work?

    asked by Anonymous
  98. Algebra

    Help me factor this it's so easy I am not getting it figured out! 8x^2-16xy+8y^2

    asked by Julie
  99. Chemistry

    Calculate the concentration of OH-(aq) in a solution which [H+] = 100 x [OH-]. Thank you.

    asked by Simone
  100. geometry

    The density of a block of wood is 0.78 grams per cubic centimeters. What is the volume of the block if its mass is 28.8 grams?

    asked by mariah
  101. Chemistry

    Two rigid containers of equal volume hold hydrogen and argon gases respectively at the same temperature and pressure. Which of the following statements is(are) false ? A) The two containers hold an equal mass of gas. B) The two containers hold an equal

    asked by Gina
  102. ethics

    think the only kind of immigrants that should be favored is the ones that have decided to come to America legally. These are the people that have put time and money into getting somewhere instead of trying to get away with doing nothing. I know that if it

    asked by Anonymous
  103. Chemistry

    If the molecular mass for a chemical is 151.97 g/mol and the enthalpy of formation is -1128 kJ/mol, the heat change will be _______kJ when 10.0 g of this chemical is formed.

    asked by HELP!
  104. trig

    How do I find the exact value of sin2x when secx is equal to the negative square root of three

    asked by Cody
  105. Islamic Managerial Ethics

    Discuss the relevance of the five pillars of Islam to managers of organizations in the world today.

    asked by Dennis
  106. Algebra 1-Matrix

    In a certain county the proportion of voters in each age group registerd as Republicans and Democrats or Indpendence is given by the following matrix which is called A. 18-30 31-50 Over50 Republican 0.40 0.30 0.70 Democrat 0.30 0.60 0.25 Indpendent 0.30

    asked by Brad
  107. Religious Studies and Ethics

    I am trying to write a little paragragh on RS, the subject and I need to write about the many siginificant discoveries that have been really helpfyul in the past 100 years or in recent years. I just need some ideas.

    asked by Hannah
  108. Math

    Penelope bought 17 large packs and 5 small packs of identical pens. When she got home, her little sister opened all of the packages on the floor. If a total of 234 pens were on the floor, how man pens did a large pack contain?

    asked by Diana
  109. History

    What was the attitude climate/situation surrounding the Clara Bow's/political life?

    asked by Sarah
  110. physics

    a wieght of one kg is raised through a distance of .8 mtr against gravity in the up ward direction from 1.5 mtr to 2.3o mtr.how much energy is burnt in joules or cal.

    asked by ajmer singh sidhu ludhiana
  111. math

    A single die is rolled once. What are the odds against rolling a prime number?

    asked by Bill
  112. FP/101 FOUNDATIONS OF PERSONAL FINANCE (AXIA)

    1) What type of mortgage loan has a fixed rate, fixed term and fixed payment?

    asked by Rhonda
  113. Algebra 1

    Use Cramer's rule to solve the system. -2x - 2y = -16 2x + 3y = 23

    asked by Brad
  114. calc

    f(x)=6(sin(x))^x, find f'(1). and f(x)=3x^ln(x), find f'(9). i tried these so many times and it keeps telling me that my answers are wrong :/ for the first one i did f'(1) = 6sin(1) * {ln[sin(1)] + cot(1)}., is that correct, when i put it in my calculator

    asked by yoo
  115. Stats

    Skewed distributions were discussed in this week’s readings. Think about some of the psychological studies you are familiar with and the constructs investigated in those studies. Describe the study you are referring to and give some examples of the

    asked by Sheryl
  116. Geography check

    almost entirely surrounded by coral reefs this african island country, is found due east of Madagascar. This is Mauritius? Or is it Port Victoria?

    asked by Alyonka
  117. math

    find the fracton notation for the ratio 73/88

    asked by bria
  118. Chemistry

    Please :) N2H4(g) + H2(g) 2 NH3(g) H1 = –1876 kJ 3 H2(g) + N2(g) 2 NH3(g) H2 = –922 kJ The H f for the formation of hydrazine: 2 H2(g) + N2(g) N2H4(g) will be_____kJ/mol.

    asked by HELP!
  119. physics

    If we are running on a threadmill with a speed such that I appear stationary and throw a ball, will the ball go further as compared to one who throws the ball while he is standing stationary. The concern is that though I appear stationary while I am

    asked by HK
  120. physics

    a golf ball is hit off a tee witha speed of 50m/s at an angle of 37 degrees above the horizontal. At what two values of x (horizontal distance from the tee) will the ball be 25m above the ground?

    asked by anya
  121. com150

    need help with appendix H grammar exercise 2

    asked by pam
  122. physics

    light waves

    asked by karma
  123. maths

    Michelle is making a scale drawing of a building. The scale for the drawing is 1 inch = 6 feet. The height of the building in the drawing is 7 1/4 inches. Determine the height of the actual building.

    asked by lisa
  124. algebra

    Find the center and radius of a circle (x+1)2 + (y-3)2

    asked by RAM
  125. English

    Can you please check my sentences? Thank you very much. 1) Hamlet makes some soliloquies. The oak, along with the mistletoe, was the most important sacred tree to the Celts. 2) Most Druids were women. 3) In a revenge tragedy usually appears a ghost who

    asked by Mike
  126. pre calculus

    let f(x)= -x^2 - 1. evaluate f(x)at x=6, -6

    asked by henry baliz
  127. math

    Use each of the integers 1-9 exactly once in any order to write a numerical expression equal to 2011. An integer may be written as an exponent, and the operations of addition, subtraction, multiplication, and divisions as well as grouping symbols may be

    asked by Diana
  128. math

    f(2n)=n+f(2n-2) and f(2)=1. determine f(20)

    asked by Diana
  129. algebra

    LCM x^2+16x+49x^2-35 =-35 Is this the correct answer

    asked by sam
  130. physics

    Calculate pressure if force is 5N in an area of 1m.sq.

    asked by Anonymous
  131. Algebra 2

    Factor f(x)=x^4+x^3-8x^2+6x+36 completely

    asked by Vic
  132. elementary math

    1100two+101two=

    asked by jamie
  133. Trig

    tan 75 (show all work please)

    asked by Paige
  134. acid vs base

    Calculate the pH of a solution that obtained by diluting 0.015 mol acetic acid with water to 250 cm3 (the Ka - value for acetic acid is 1.74 x 10-5 M).

    asked by Anonymous
  135. physics

    A truck loaded with cannonball watermelons stops suddenly to avoid running over the edge of a washed-out bridge (see figure). The quick stop causes a number of melons to fly off the truck. One melon rolls over the edge with an initial speed vi = 12.0 m/s

    asked by Anonymous
  136. Calculus please help

    please help I can not understand this. I need an implicit form answer for the general solution of differential equation dy/dx=2(e^x-e^-x)/y^2(e^x+e^-x)^4 with (y>0). I have separated the y^2 to the left hand side to become 1/3y^3 but have no idea how to

    asked by Brian
  137. Geography check

    I have to answer the question this african country is a world leader in coffee and cacao exports. The answer is Cote d'Ivore or Ivory Coast, correct?

    asked by Alyonka
  138. Calculus

    Find an equation of the tangent line to the graph of the function f defined by the following equation at the indicated point. (x - y - 1)3 = x; (1, -1)

    asked by Anonymous
  139. Present Value simple interest

    11% interest $186.00 interest paid 140 days what was the orginal amount please show calcualtion

    asked by Janine
  140. statistics

    if a data se has a mean of 10.0 seconds & a standard deviation of 2.0 seconds, what is the z score corresponding to the time of 4.0 seconds?

    asked by thelma
  141. Chemistry

    Explain which atom of the following pair have the smaller ionization energy: As, I

    asked by Emily
  142. Math

    what does this mean |-60| I don't remember what the lines mean????

    asked by Hannah jane
  143. Geography check

    This geographical feature is made up of two parts and continues through Eritrea, Ethiopia, and Tanzania. The answer is The Great Rft Valley, correct?

    asked by Alyonka
  144. English

    EVERY YEAR AS SOON WHAT WILL WHAT DELICIOUS MOST IMPORTANTLY INDEED THE ______ ______ What are the next to words?

    asked by Samantha
  145. Algebra: HELP

    Solve for x: x + 6 = 5(2x - 2) Answers to choose from, these are all fractions. A. 8/9 B. 16/9 C. -4/9 D. -14/9 Can someone please help me with this because when I saw the fractions I completely freaked!

    asked by Cheryl
  146. Physics

    An electric field is generated by a charge imbalance and the field is expressed by Coulomb’s Law. What is the value (and UNITS) of the proportionality constant in Coulomb’s law?

    asked by maritza
  147. Geometry

    What is the volume of a right cylinder if the radius is 5 and the height is 4?

    asked by Nysnej
  148. 8th Grade Algebra

    Tim and Sasha have a bag containing 7 red marbles, 3 blue marbles, 6 white marbles, and 4 yellow marbles. Tim reaches in, without looking, pulls out a marble, records the color, and then puts the marble back.Sasha then does the same thing. What is the

    asked by Elizabeth
  149. english

    Review the four paragraphs below. There is one paragraph matching each of the following types: summary, analysis, synthesis, and evaluation. Once you have read each paragraph, complete the following chart to identify the type of paragraph for each. My

    asked by jub
  150. Chemistry

    Based on H f = –1275 kJmol of glucose, the formation of glucose will be A. endothermic B. exothermic and heat will be A. released B. absorbed to /from the surroundings.

    asked by Anonymous
  151. english

    please,can you correct the grammar... i graduated last 2 years of 2 two years course in college and i want to pursue for 4 years course to have a degree course.

    asked by jessie
  152. Algebra

    Fine the slope intercept equation of the line that has the given characteristics. Slope 8,3 and y-intercept (0,-8)

    asked by Jean
  153. Algebra 2

    Evaluate the expression. Assume m‚0. m0=?. Simplify your answer. THANK YOU!

    asked by Esther
  154. algebra 2

    Evaluate the expression. Assume m‚0. m0=?. Simplify your answer. I don't know why the symbol after the (m)didn't appear, but here goes again. Thank you.

    asked by Esther
  155. ON LINE LIBRARY SOURCES

    HOW CAN THE ONLINE LIBRARY HELP ME WITH FINDING MY ACEDEMIC WRITING?

    asked by MICHELLE
  156. Physics

    If two electrons (q = 1.60 x 10–19 C) are 1 m apart, what is the magnitude of the electric force repelling the two electrons?

    asked by jack
  157. Algebra 2

    Evaluate the expression. Assume (m is not equal to 0) m‚0. m0=?. Simplify your answer. "Sorry, I can't get the "not equal to", sign to print in. I hope you know what i'm talking about. Thank you for your help.

    asked by Esther
  158. world history

    I need a list of Physical features Marco Polo would have seen on his journeys.

    asked by Bell
  159. Algebra

    Can this be solved? x+y=160 x=4y+9

    asked by Donna
  160. math

    Need help with negation using demorgan law. ~(a and ~b) I have ~a and b Is that correct?

    asked by phobia
  161. Physical science

    The acceleration due to gravity on earth

    asked by Robert
  162. math

    any two cubic number that when added toghether gives anothere cubic number a^3+b^3=c^3. find a,b&c

    asked by nimrod
  163. math

    a^3+b^3=c^3...find a,b&c anyone who can help me before 6pm i promise R200

    asked by nimrod
  164. geometry

    If a chord 10 inches long is 5 inches from the center of a circle, find the radius of the circle.

    asked by john
  165. algebra

    36x^12 40x^8 I came up with 4x^8

    asked by ann
  166. algebra

    z-6 z+9 =4/7 =109/7 I hope this is correct, please help

    asked by ann
  167. Algebra: Help please

    I'm really bad with monomial expressions. Can someone please help? Is 7(m - 2) a monomial expression? yes or no Is 3mnp a monomial expression? yes or no

    asked by Cheryl
  168. Algebra again. Help

    Evaluate (wx)-4 if w = -3 and x = -4 is the answer: 1 over 144? Thanks in advance!

    asked by Cheryl
  169. grade 2

    what is he probilty of rolling a dice and get a 5 if you rol it 5 time

    asked by eric
  170. Algebra

    5 (x + 3) + 6 < 3 (x - 2) + 5 Help sove with all the steps

    asked by Evelyn
  171. Health,Nutrition, and safety

    What is the overall wellness of young children and the role and early childhood education setting can play in ayoung children and well-being.

    asked by taylor
  172. Social Psychology

    Discuss how confirmation bias can influence perceptions and how some beliefs can actually generate their own confirmation in 200 to 300 words. Provide relevant examples to support your explanation.

    asked by Mandy
  173. history

    constitutional amendment initiates a national income tax passed by which one: Theodore Roosevelt Woodrwo Wilson William Taft I think it is Taft

    asked by sharice
  174. mat/117

    can some one help with this polynomial. (C -5)-^2

    asked by robbie
  175. grammar

    Which is correct? 1. What did you do on the winter break? or 2. What did you do on winter break? I believe #2 is correect because the `the` is not needed. However, I cannot find a clear rule to support this. Please advise. James

    asked by James
  176. two views of king phillips war

    I'm not sure what the two views mean? is it what king Phillip wanted, and what the whites wanted, do i explain about there wants...please help i read it but still don't get the "two views" of king Phillips war

    asked by cale
  177. english

    can you please tell me a bit about mamma mia the musical /movie?

    asked by chloe
  178. Math

    what does this mean |-60| I don't remember what the lines mean????

    asked by Hannah jane
  179. 8th grade science

    What leaves after a disturbance in the climax community?

    asked by Nina
  180. Chemistry

    Is it true that: An isotope has a different number of neutrons than protons in the nucleus of its atom.

    asked by Amy
  181. Home Ec

    Is knitting harder with a hook or with 2 knitting needles?

    asked by Alyonka
  182. History

    how did the rest of the US feel about war with mexico?

    asked by Janet
  183. science!

    how is nickel used in glass?

    asked by jessica
  184. Geography check

    Where is Emi Koussi located? The answer is Chad?

    asked by Alyonka
  185. Math

    circles P and Q are externally tangent at T. Horizontal lines l and m are, respectively, tangent to circles P and Q at R and S. Show that RT must contain S.

    asked by Diana
  186. hcs 335

    can someone help me find some sites from waht i poisted below i would like to find some more information thank you

    asked by bobbi
  187. algebra

    did I do this correctly? 7v-49 v-7 25 / 15 525v^2-35v-147 75v

    asked by sam
  188. algebra

    v^2-36 6 -v my answer (v+6)(v^2-6y+36 6v

    asked by sam
  189. math 156

    find the sum 13/14+4/5

    asked by lorry
  190. math

    Do you think that the formula p = 6n + 1 where n is a whole number, will produce a prime number more than 50% of the time?

    asked by anonymous
  191. science

    what is the periodic table

    asked by susan
  192. Trig

    find the exact value of the expression using the provided information. Find Tan (S+T) given that cos s=1/3 with s in quad I and sin T= -1/2 with T in quad IV

    asked by Paige