Questions Asked on
September 14, 2012

  1. chemistry

    calculate the lattice energy of sodium oxide (Na2O) from the following data: Ionization energy of Na(g): 495 kJ/mol Electron affinity of O2 for 2e: 603 kJ/mol Energy to vaporize Na(s): 109 kJ/mol O2(g) bond energy: 499 kJ/mol Energy change for the reaction

    asked by Meeeee
  2. Physics

    Mary needs to row her boat across a 100m wide river that is flowing to the east at a speed of 1.0m/s. Mary can row with a speed of .0m/s a) If mary points her boat due north, how dar from her intended landing spot will she be when she reaches the opposite

    asked by Jake
  3. chemistry

    What is the mole ratio of benzene (C6H6) to n-octane in the vapor above a solution of 15.0% benzene and 85.0% n-octane by mass at 25 degrees Celcius? the vapor pressures of n-octane and benzene are 11 torr and 95 torr.

    asked by Wiped Out
  4. Physics

    Hearing damage may occur when a person is exposed to a sound intensity level of 90.0 dB (relative to the threshold of hearing) for a period of 9.0 hours. One particular eardrum has an area of 1.90 10-4 m2. How much sound energy is incident on this eardrum

    asked by Morgn
  5. math

    Find the slope m of the tangent to the curve y = 5/ sqrt (x) at the point where x = a > 0. what is the slope?

    asked by maura urgent!
  6. geometry

    Algebra BD bisects

    asked by Jane
  7. economics

    Suppose the price of widgets falls from $7 to $5 and consumption of widgets rises from 15 widgets a month to 25 widgets. Calculate your price elasticity of demand of widgets. What can you say about your price elasticity of demand of widgets? Is it Elastic,

    asked by steve
  8. physics

    A water-skier is moving at a speed of 16.7 m/s. When she skis in the same direction as a traveling wave, she springs upward every 6.9 s because of the wave crests. When she skis in the direction opposite to the direction in which the wave moves, she

    asked by Morgn
  9. chemistry

    A solution was made by dissolving 5.15 mg of hemoglobin in water to give final volume of 1.00 mL. The osmotic pressure of this solution was 1.97 x 10^-3 atm at 25C. Calculate the molar mass of hemoglobin. pi = iMRT i = 1 since hemoglobin is nonelectrolyte

    asked by Wiped Out
  10. chemistry

    At 23°C, Kp = 0.075 for the equilibrium: NH4HS (s) ↔ NH3 (g) + H2S (g) A sample of solid NH4HS is placed in a closed vessel and allowed to equilibrate. Calculate the equilibrium partial pressure (atm) of ammonia, assuming that some solid NH4HS remains.

    asked by Nicole
  11. writing

    Now that you've spotted the problems of shift of person and shift of number, revise the paragraph by removing these inconsistencies. Rewrite the paragraph, maintaining consistency by using first person plural when referring to the readers, and third person

    asked by Anonymous
  12. Physics: Energy & Work Done

    A spring of negligible mass has a force constant k = 1600 N/m. You place the spring vertically with one end on the floor. You then drop a 1.20 kg book onto it from a height of 0.8 m above the top of the spring. Find the maximum distance the spring will

    asked by Anonymous
  13. physics

    A wire tooth brace used by orthodontists. The top-most tooth is protruding slightly, and the tension in the wire exerts two forces at 16 º angle on this tooth in order to bring it back into alignment. If the forces have the same magnitude of 19.5 N, what

    asked by marissa
  14. Business Management-Principles of Management

    I have some questions and answers. Can you please go over them and let me know how I did on it? 1. When a manager performs symbolic duties as the head of an organization, that manager is called a A. spokesperson. C. leader. B. figurehead. D. liaison. 2.

    asked by Kati
  15. Physics

    A partly-full paint can has 0.83 U.S. gallons of paint left in it. (a) What is the volume of the paint, in cubic meters? (b) If all the remaining paint is used to coat a wall evenly (wall area = 12 m2), how thick is the layer of wet paint? Give your answer

    asked by Emily
  16. math

    Maria ran in a 42 km marathon she covered the first half of the marathon from 0600 to 0715 hours and stopped and rest. She resumed running was able to cover the remaining distance from 0720 to 0935 hours. What was Maria's average speed for the entire

    asked by Jenibel
  17. orgo

    What is the pH of a 5.00E-2 M solution of acetylsalicylic acid, pKa = 3.52.

    asked by Jess
  18. Physics

    The cheetah can reach a top speed of 114 km/h (71 mi/h). While chasing its prey in a short sprint, a cheetah starts from rest and runs 46 m in a straight line, reaching a final speed of 83 km/h. (a) Determine the cheetah's average acceleration during the

    asked by Claire
  19. Math Help

    8. One nanometer is about 0.00000003937 of an inch. What is this number in standard notation? a. 3.937 x 10^-8 b. 3.937 x 10^8 c. 3.937 z 10^-7 d. 3.937 x 10^7 9. What is 3/8 written as a decimal? a. 2.33333... b. 0.375 c. 0.33333... d. 2.667 10. According

    asked by Nyla
  20. Physics

    Which of the following best describes kinematics? a) Kinematics is a part of mechanics that involves the description of motion. b) Kinematics is the branch of physics that deals with the motion of objects and the action of forces on the objects.

    asked by Kevin
  21. Calc 3

    Find the limit, if it exists. (If an answer does not exist, enter DNE.) lim (x, y)→(0, 0) of (x^2 + y^2)/[((x^2 + y^2 +64)^.5)-8]

    asked by Becky
  22. Math

    2. Find the product of 2 1/2 and 2/5. a. 2 2/10 b. 2 3/7 c. 2 4/9 d. 2 9/10 3. Which of the following makes the statement true? 1/5^0 = ? a. 1 b. -1 c. -5 d. 0 4. The area of a certian state is 840,000 square miles. What is this area in scientific

    asked by Nyla
  23. physics

    An automobile accelerates from rest at 1.3m/s^2 for 19s. The speed is then held constant for 23s, after which there is an acceleration of -0.9m/s^2 until the automobile stops. What total distance was traveled? Answer in units of km.

    asked by sam
  24. physical sicence

    how fast must a ball be thrown upward to reach a height of 12 m?

    asked by maria
  25. science; AP Chem

    Dinitrogen oxide (N2 O) gas was generated from the thermal decomposition of ammo- nium nitrate and collected over water. The wet gas occupied 124 mL at 21◦ C when the atmospheric pressure was 752 Torr. What vol- ume would the same amount of dry

    asked by Anonymous
  26. world history

    The popularity of an individual Hindu deity was largely a reflection of a) its ranking by the Hundred Schools of Thought. b) the approval it received from Siddhartha Gautama. c) its pre-Aryan origin. d) the size of its pyramids. I think it's A but I'm not

    asked by anon
  27. chemistry

    required to heat 38.0 g of copper (cu) from 122 degree celsius to 246 degree celsius

    asked by Anonymous
  28. physics

    Two bicyclists, starting at the same place, are riding toward the same campground by different routes. One cyclist rides 1120 m due east and then turns due north and travels another 1550 m before reaching the campground. The second cyclist starts out by

    asked by Anonymous
  29. english

    i need help please. What does Thomas F. Walsh, Jr's thesis propose about "Young Goodman Brown"? -because young goodman brown is a fictional short story it does not reflect any truth about life? -goodman brown enters the forest doubting the goodness of

    asked by jay
  30. math

    Steven collected data from 20 college students on their emotional responses to classical music. Students listened to two 30-second segments from “The Collection from the Best of Classical Music.” After listening to a segment, the students rated it on a

    asked by lewis
  31. AP Chemistry, Chem, science

    Can anyone please help me with this problem?? =/ The reaction between solid sodium and iron (III) oxide is one in a series of reactions that inflates an automobile airbag. If 100g of sodium and 100g of iron(III) oxide are used in this reaction, determine:

    asked by Layla
  32. physics

    Light-rail passenger trains that provide transportation within and between cities are capable of modest accelerations. The magnitude of the maximum acceleration is typically 1.3 {\rm m}/{\rm s}^{2}, but the driver will usually maintain a constant

    asked by kaitlyn
  33. chem

    calculate the pH of 5x10^-2 M of benzoic acid with pKa= 4.19

    asked by Jess
  34. science; AP Chem

    Divers know that the pressure exerted by the water increases about 100 kPa with every 10.2 m of depth. This means that at 10.2 m below the surface, the pressure is 201 kPa; at 20.4 m below the surface, the pressure is 301 kPa; and so forth. If the volume

    asked by Anonymous
  35. Precalculus

    he distance between 2 points (x1,Y1) and (x2,y2) is given by d = square root (x1-x2)^2 + (y1-y2)^2 a - pick 2 arbitrary points in 3 dimensions, (x1, y1, and Z1) and (x2,y2,z2) and plot these points. Not that there are 90 degrees between the xy, xz, and yz

    asked by Greg
  36. calculus

    To find the equation of a line, we need the slope of the line and a point on the line. Since we are requested to find the equation of the tangent line at the point (64, 8), we know that (64, 8) is a point on the line. So we just need to find its slope. The

    asked by maura
  37. art

    The Visual Elements: "Street, Dresden", 1907, oil on canvas by Ernst Ludwig Kirchner Describe the shapes in this painting. Are the shapes organic or geometric? Which ones? Describe how the shapes interact, or "touch" each other. Are the edges of the shapes

    asked by Olivia
  38. physical science

    the acceleration of gravity on the surface of venus is 8.9 m/s2. would a ball thrown upward from venus return to the ground sooner or later than a ball thrown upward with the same speed on the earth?

    asked by tracey
  39. physics

    A cannon ball is shot straight upward with a velocity of 72.50 m/s. How high is the cannon ball above the ground 2.30 seconds after it is fired? (Neglect air resistance.)

    asked by Anonymous
  40. Physics

    14. A racing car accelerates uniformly through three gears, changes with the following average speed: 20 for 2.0 s 40 for 2.0 s 60 for 6.0 s What is the overall average speed of the car?

    asked by Mariam
  41. Math

    How do i round off the decimal 0.9683 to the nearest tenth, hundredth, and thousandth

    asked by Losa
  42. physical science

    a force of 20 N gives an object an acceleration of 5 m/s2. (a)What force would be needed to give the same object an acceleration of 1 m/s2. (b) what force would be needed to give an accelerattion of 10 m/s2 ?

    asked by tracey
  43. physical science

    the 200g head of a golf club moves 40 m/s in a circular arc of 1.2m radius. How much force must the player exert on the handle of the club to prevent it from flying out of her hands at the bottom of the swing? ignore the mass of the clubs shaft.

    asked by tracey
  44. Psychology

    Given your knowledge of dualism, choose the best interpretation of presence of dualism in this excerpt from an Emily !@#$%^&inson poem: The brain is wider than the sky, For, put them side by side, The one the other will include With ease, and you beside.

    asked by Lilly
  45. Stats

    A large population has a mean of 200 and a standard deviation of 40. Which one of the following best describes the percentage of measurements that fall in an interval that is within two standard deviations of the mean?

    asked by Natalie
  46. hp

    each case of almond bars contains 9 smaller boxes. each smaller box contains 24 almond bars. how many almond bars are in each box

    asked by Anonymous
  47. Math

    Jim has a total of 77 red and blue marbles. The number of blue marbles is 5 more than twice the number of red marbles. How many red marbles are there?

    asked by Terralyn
  48. Physics

    A tennis ball with a speed of 14m/s is moving perpendicular to a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 11.41m/s. If the ball is in contact with the wall for 0.0112s, what is the average acceleration of

    asked by sam
  49. Economics

    A person is willing to pay $50 per visit for physical therapy, but she pays $35 per visit. This person receives a consumer surplus of $85 per visit. Is this true or false/

    asked by Marie
  50. Economics

    The demand for cosmetic surgery is more elastic than the demand for Botox treatments, would this be true or false? My thoughts are true.

    asked by Marie
  51. Math

    You decide to build a pyramid out of wooden blocks. Each block must rest on the corners off 4 other blocks. If there is one block on top and 36 on the bottom, what is the total number of blocks you will need to complete the pyramid?

    asked by Carly
  52. chemistry

    A typical adult body contains 55 \% water. If a person has a mass of 61.0kg , how many pounds of water does she have in her body?

    asked by Anonymous
  53. Physics

    Highway safety engineers build soft barriers so that cars hitting them will slow down at a soft rate. A person wearing a safety belt can withstand an acceleration of 300m/s^2. How thick should barriers be to safely stop a car that hits the barriers at

    asked by sam
  54. Precalculus

    The distance between 2 points (z1,Y1) and (x2,y2) is given by d = square root (x1-x2)+ (y1-y2)^2) a - pick 2 arbitrary points in 3 dimensions, (x1, y1, and Z1) and (x2,y2,z2) and plot these points. Not that there are 0- degrees between the xy, xz, and yz

    asked by Greg
  55. calculus

    Calculate the following integral: ∫ dx / x(1 - √x)^2

    asked by Robert
  56. CSU Fresno

    Give an example of languages L1 and L2 that satisfy the conditions (a) L1L2=L2L1, (b) L2 is a proper nonempty subset of L1, and (c) L2≠{ε}.

    asked by Vicky Muda
  57. psy315

    a psychologist at a mental hospital was asked to determine whether there was any clear difference in the length of stay of patients with different categories of diagnosis. looking at the last 4 patients in each of the 3 major categories , the results in

    asked by sandy
  58. Physics

    Runner A is initially 2.4 km west of a flagpole and is running with a constant velocity of 8.4 km/h due east. Runner B is initially 2.2 km east of the flagpole and is running with a constant velocity of 7.4 km/h due west. What will be the distance of the

    asked by Fiona
  59. college algebra

    x y z rhs 1 1 2 3 2 1 6 3 0 3 4 13 i need to multiply some number and add to r3 answer quick!

    asked by ann :)
  60. earth

    waste produced by people along the east coast of the united states has been dumped into the atlantic ocean where it is distriuted y surface ocean currents, Which coastel area is most liekly to become polluted by this waste?

    asked by Jane
  61. Chemistry hnrs

    what is the electron configuration of vanadium?

    asked by Pamela
  62. math

    The "wapple" of a number is defined as the number of positive odd intergers less than that number. 1. what is the wapple of 19? 2.If the wapple of x is equal to 5, what is the wapple of x + 6?

    asked by gary
  63. Algebra..

    Find the slope of the straight line that passes through the given points or state that the slope is undefined. Then indicate if the line through the points rises (left to right), falls (left to right), is horizontal, or is vertical. 1. (7, 4) and (1, 1) 2.

    asked by Pat6
  64. Physics

    7. A cat pushes a ball from a 7.00 m high window, giving it a horizontal velocity of 0.20 m/s. How far from the base of the building does the ball land? (Assume no air resistance and that ay= g = 9.81 m/s2.)

    asked by Brooke
  65. Physics

    A diver running 1.1 m/s dives out horizontally from the edge of a vertical cliff and 3.3 s later reaches the water below. How high was the cliff? How far from its base did the diver hit the water?

    asked by Ellise
  66. math 12

    A)a shed, in the shape of a square based prism, is to have volume 800meters cubed. determin the dimentions of the shed, with the minimum surface area. B)how would the answer change if the minimum surface area did not include the bottem of the shed?

    asked by neha
  67. Math

    two trains are traveling toward each other adjacent tracks. one of the trains 230 feet long and is moving at a speed of 60 miles per hour. The other train is 220 feet long and is traveling at the rate of 70 miles per hour. Find the time interval between

    asked by Taylor
  68. math

    Lilly collects data on a sample of 40 high school students to evaluate whether the proportion of female high school students who take advanced math courses in high school varies depending upon whether they have been raised primarily by their father or by

    asked by lewis
  69. Physics

    Runner A is initially 2.4 km west of a flagpole and is running with a constant velocity of 8.4 km/h due east. Runner B is initially 2.2 km east of the flagpole and is running with a constant velocity of 7.4 km/h due west. What will be the distance of the

    asked by Fiona
  70. • psychology

    • Discussion of factors that enhance or impede information flow in each step of the process in the human memory model

    asked by Michael holmes
  71. physics

    A ladder 7.65 m long leans against the side of a building. If the ladder is inclined at an angle of 60.5° to the horizontal, what is the horizontal distance from the bottom of the ladder to the building?

    asked by kim
  72. physics

    A high fountain of water is located at the center of a circular pool as shown in the figure below. Not wishing to get his feet wet, a student walks around the pool and measures its circumference to be 39.0 m. Next, the student stands at the edge of the

    asked by kim
  73. orgoo

    what are the products of the reaction: HC3OH + (Na+NH2-) ?

    asked by Jess
  74. the exceptional child

    physical disabilities affect young children's learning because: a.physical disabilities always affect thinking. b.cerebral palsy gets progressively worse. c. physical therapy takes time away from learning. d.their learning is primarily activity-based.

    asked by Rashmi
  75. Physics(Please answer, thank you)

    How do you determine the ymax? I know you have to use Q which I have values that were given to me as well as vo values but I am not sure what to do with these values.

    asked by Hannah
  76. the exceptional child

    Transactional relationships exist in the families because: a.Parents tell their children how to behavior.b. children adult influence each other's behavior.c.parents cannot really learn from their children. d.teachers often make home visits. (2) special

    asked by Rashmi
  77. physics

    a ball is thrown upward what is its maximun height? its initial vertical speed is 8.1 m/s and the acceleration of gravity is 9.8 m/s . neglet air resistance . answer in units of m

    asked by fabiola
  78. Macroeconomics

    Can someone point me in the right direction on how to solve this? 1. Suppose you have an economy with two factors of production (capital and labor), and suppose that capital's share of national income is 40% and that labor's share is 60%. Assume also that

    asked by Robson
  79. Algebra..

    HELP. Problems 4 - 7: Write an equation for the line in point/slope form and slope/intercept form that has the given condition. 4. Slope = 3/2 and passes through the origin. 5. x-intercept = 4 and y-intercept = -3

    asked by 987:)
  80. 7th Grade Math

    (-13) + (-1)

    asked by Lauren
  81. college algebra

    x y z rhs 1 1 2 3 2 1 6 3 0 3 4 13 multiply some number by r2 and add result to r3(2) have to get o in r3 (1)- steps:------------------

    asked by ann :)
  82. computer science

    Which of the following is *not* a reason why a transmission signal might be corrupted or lost? 1. The protocol for the transmission is TCP/IP. 2. The cabling does not have any kind of shielding. 3. The copper used to connect the systems is contaminated. 4.

    asked by unity jackson
  83. Math

    Which is greater, the greatest whole number with 5 digits or the least whole number with 6 digits?

    asked by Nick
  84. Linear Algebra

    Solve the initial value problem: xdy/dx+4y=7x^3-10x for y(1)=4

    asked by Brianna
  85. chemistry 121

    A Canadian, driving in the U.S.A., fuels their car at a cost of US$3.72 per gallon (US). The current monetary exchange rate is 0.928 US$/Can$. The density of the fuel is 0.626 g/mL. What is the mass of Can$90.00-worth of this fuel?

    asked by skb
  86. chemistry

    when you burn ionic and covalent compound using Bunsen burner,what you will see?

    asked by Anonymous
  87. Geodetic Survey

    a surveyor is trying to determine the change in hight h from the bottom to the top of a hill. If the height of instrument H is 4.5 ft the height of the object that he sights on the tower A is 6.5 ft and the zenith angle Z is 54deg 16' 25" determine the

    asked by Teresa
  88. the exceptional child

    Most early childhood professionals children’s agree that the terms inclusion and mainstreaming: A. Both refer to exceptional children’s participation in the general education curriculum. B. Mean the same thing. C. Are two different concepts. D. Both

    asked by Rashmi
  89. government s1

    Despite their difference , the Founding Fathers all agreed that

    asked by Anonymous
  90. Geography

    Is this correct? What line of longitude forms the other half of the prime meridian? When joined with the Prime Meridian the 180 degree of longitude forms a complete circle

    asked by Sean
  91. Physics

    The barrel of a rifle has a length of 0.916m. A bullet leaves the muzzle of a rifle with a speed of 621m/s. What is the acceleration of the bullet while in the barrel? A bullet in a rifle barrel does not have a constant acceleration, but constant

    asked by sam
  92. physics

    An airport has runways only 136m long. A small plane must reach a ground speed of 39m/s before it can become airborne. What average acceleration must the plane's engines provide if it is to take off safely from its airport? Answer in units of m/s^2.

    asked by sam
  93. Math

    Hi I am not good with math. Please tell me how to differentiate mixed numbers, order of operation,subtraction, divide and multiplication etc. Thanks!

    asked by Leah
  94. math

    choose a natural between 1 and 20 inclusive. what is the probability that the number is a mutiple of 3

    asked by Anonymous
  95. Calculus

    lim[x:81,(x/(1+sqrtx) - 81/10) / (x-81)]

    asked by jay
  96. math

    If you can buy 12 cans of juice for $8, how much will 18 cans cost ?

    asked by kayla
  97. PHYSICS help!!!!!!

    A commuter train travels between two downtown stations. Because the stations are only 1.36 km apart, the train never reaches its maximum possible cruising speed. During rush hour the engineer minimizes the travel time t between the two stations by

    asked by neeba
  98. science

    A 49 kg person drinks 270. g of milk, which has a "caloric" value of approximately 3.0 kJ/g. If only 16% of the energy in milk is converted to mechanical work, how high (in meters) can the person climb based on this energy intake? [Hint: The work done in

    asked by Alyssa
  99. Antarctica

    In 1973, Congress enacted the Endangered Species Act (ESA) to protect plants and animals from extinction. Many methods are used for protection. Residential or commercial development may be banned in an area that is set aside to protect animal or plant

    asked by earl
  100. physics

    A roller coaster travels 101 ft at an angle of 56.8 above the horizontal. How far does it move horizontally?

    asked by jude
  101. chemistry

    the vapour pressure of water at 20 degree celcius is 18 mm hg .if the relative humidity is 35 % the weight per litre of air at 20 degree celcius is ?

    asked by anni
  102. 7th Grade Physics

    Given a homogenous liquid mixture of sodium chloride (salt) and water, what would be the best method to separate these substances? What is the process. Please explain.

    asked by completeidiot
  103. Chemistry

    Calculate the number of grams necessary of C6H12O6 to make 1.00 ml of 0.025 M glucose.

    asked by Anonymous
  104. science

    the ph of a 0.280m solution of a weak base. B has been measured ph --8.69. using this information. calculate the base ionisationconstant kbof b

    asked by Emily
  105. economics

    In what areas of the economy are jobs growing most rapidly? Is this due to a lack of technological innovation in these areas?

    asked by Anonymous
  106. math

    Billie wishes to test the hypothesis that overweight individuals tend to eat faster than normal-weight individuals. To test this hypothesis, she has two assistants sit in a McDonald’s restaurant and identify individuals who order the Big Mac special for

    asked by lewis
  107. political science

    Political Participation What changed, if anything, in the American political culture between 2004 and 2008? Further, please feel free to examine changes to 2012, and how they might influence this year's November presidential and congressional elections.

    asked by Anonymous
  108. math

    If f(x) =kx^3-1 and f^-1 (15)=2 find k

    asked by jezebel
  109. Government

    This is a summary of my notes from the article: Please read. Now I need help with putting it into a summary paragraph WHEN I FIRST MEET TAMMY DUCKWORTH in her suburban Chicago campaign office, she nearly mows me over with her $4,000 titanium wheelchair as

    asked by Vicky
  110. Calculus

    I'm supposed to find the limit as x approaches infinity of (2-x-sinx)/(x+cosx). I've thought about using the squeeze theorem, but I'm not sure it applies here. Can someone point me in the right direction? Thanks.

    asked by Will
  111. Biology

    If you added .1 M NaOH to 1 M HCO2H a few millimeters at a time what would happen?

    asked by Unknown
  112. chmistry

    Compound: Concentration: Measured deltaT LiCl 6.00 g/kg 0.492 deg C HCl 4.00 g/kg 0.389 deg C NaCl 6.00 g/kg 0.356 deg C Determine the value of the vant hoff factor for each salt for the experimentally measured delta T value. (kf=1.86) I have tried to

    asked by Brunette
  113. college algebra

    x y z rhs 1 1 2 3 2 1 6 3 0 3 4 13 i need to multiply some number and add to r3 and get o in r3 answer quick!

    asked by ann :)
  114. Pre-Calculus need help in an Hour before test

    y=f(x+5/2) I timesd x+5 by 2 to get rid of 2 at the bottom and timesd y by 2. Then to get rid of 2 from y i divided it, and i got this. y=1/2f(x+5) however my teacher got y=f(1/2(x+5)) what did i do wrong?

    asked by Shreya
  115. math

    find the average rate of change of F(x) on the intervals -1

    asked by justyna
  116. physics

    An object is dropped from a height H above the ground. This free-falling object requires 0.904 s to travel the last 34 m before hitting the ground. From what height H above the ground did the object fall? The acceleration of gravity is 9.8 m/s^2. Answer in

    asked by maura
  117. Health and Nutrition

    What is protein?

    asked by April
  118. Health and Nutrition

    What is a complete protein?

    asked by April
  119. Health and Nutrition

    What is a vegetarian example of a complete protein?

    asked by April
  120. Algebra..

    f(x)= x^2+3 ; g(x)=3x-1 Check These Please? 1.(fg)(-1) = 5 2. (f o g)(1) =10 How would you solve this? 1. (g o f)(x)

    asked by Sara
  121. Health and Nutrition

    Explain the role of amino acids in building protein.

    asked by April
  122. physics

    A lightbulb emits light that creates a shadow of a ball on a wall. If the radius of the ball is 12.1 cm, and the radius of the shadow is 25.5 cm, and the ball is 2.09 m away from the wall, how far is the lightbulb away from the wall?

    asked by Anonymous
  123. Health and Nutrition

    Describe risks associated with protein deficiency.

    asked by April
  124. Health and Nutrition

    Discuss risks (three or more) associated with consuming too much protein.

    asked by April
  125. Math

    This is the same equation as before just with different numbers. y=yo + (vo sin Q) t - 1/2gt^2 This time the numbers are: 0 = 1.005 + (3.021 sin 30)t - 1/2(9.8)t^2 4.9t^2 - 1.5105 - 1.005 = 0 This is the part where I am stuck. Did I do this correctly? sin

    asked by Hannah
  126. Health and Nutrition

    What are some healthy nutrient sources of protein?

    asked by April
  127. Algebra 2

    a tortoise crawling at a rate of 0.1 mph, the hare wants to rest 30 more minutes before chasing the turtle at 5 mph. how many feet must the hare run to catch the turtle?

    asked by Anonymous
  128. physics

    An object is dropped from a height H above the ground. This free-falling object requires 0.904 s to travel the last 34 m before hitting the ground. From what height H above the ground did the object fall? The acceleration of gravity is 9.8 m/s^2. Answer in

    asked by maura
  129. math

    What is 77 percent round to nearest tenth of a degcree

    asked by chris
  130. Math

    What is 0.000698 rounded to 2 significant figures?

    asked by Beth
  131. chemistry

    "The sun emits UV radiation that can have serious health consequences. In particular, so-called UVB radiation is mostly absorbed by the ozone layer in the upper atmosphere (altitudes of 10 - 50 km), but the part that reaches the earth can cause DNA

    asked by Travis
  132. math

    Kyra drove to visit her friend. She traveled 144 miles in 2 5/8 hours. What was her average speed?

    asked by judy
  133. pure maths

    Factorize Xsquare-6x-3

    asked by princess
  134. Calculus

    Check my work please? Determine if f(x)= (x^2-3x+2)/(1+x^2) has a horizontal asymptotes. If so, give the equation. So I took x^2 and divided everything by it. (x^2/x^2)-(3x/x^2)+(2/x^2) / (1/x^2)+(x^2/x^2) Cancelled out some x's and have -(3/x)+(2/x^2) /

    asked by Greg
  135. Calculus with Analytical geometry

    I'm stumped on this one. lim |x-1|sin(1/x-1) x->1

    asked by Greg
  136. Calculus (Check)

    This seems to easy. Check please. Find. Lim (x^2)-4 x->2 e I substitute in 2 (2^2)-4 e gives me 4-4 e So my answer is e^0 or 1.

    asked by Greg
  137. math

    The length of a field is three times its width. If the perimeter is 64 m, what is the width of the field?

    asked by some girl
  138. math

    Can u please help. The width of a rectangle is represented by w meters. Represent the length of the rectangle if it exceeds the width by 8 meters. Thank you

    asked by kiki
  139. math

    can you please help. If a plane travels 550 kilometers per hour, represent the distance it will travel in h hours. thank you

    asked by kiki
  140. physics

    A subway train starting from rest leaves a station with a constant acceleration. At the end of 7.94s, it is moving at 12.3864m/s. What is the train's displacement in the first 5.57388s of motion? Answer in unites of m.

    asked by sam
  141. Physics

    14. A racing car accelerates uniformly through three gears, changes with the following average speed: 20 for 2.0 s 40 for 2.0 s 60 for 6.0 s What is the overall average speed of the car?

    asked by Mariam
  142. algebra 1

    place parenthesis so answer = 14. 2x2+3 to 2nd power-4+3x5.

    asked by Zac
  143. Physics

    If a satellite is orbitting the earth 710km above the earths surface, and it's velocity is 7,406.8 meters/sec, what is it's cetripedal acceleration??

    asked by Bernie
  144. math

    how much will Mary owe if she borrows $2,000 at a rate of 6% for 2 years?

    asked by kayla
  145. logic

    Can u please give me 2 own examples of contrariety,subcontrariety,subalternation,and,contradiction?PLEASE.

    asked by Ally
  146. math

    Francis ate 2/3 of a large pizza. Janette ate 1/4 of the same pizza. How much pizza did Francis and Janette eat in all?

    asked by :)
  147. chemistry

    if an iceberg has a volume of 8660 cubic feet, what is the mass in kg of the iceberg?

    asked by Anonymous
  148. Algebra..

    Help? If f = (1, 2), (2, 3), (3, 4), (4, 5), g = (1, -2), (3, -3), (5, -5), and h = (1, 0), (2, 1), (3, 2), 1. f+g 2. f-g 3. f*g

    asked by Sara
  149. Algebra..

    How to Solve This? f(x)=|x-5| g(x)=(1)/(x) 1. h(x)=|(1)/(x) -5|

    asked by TheMoney
  150. Algebra..

    help? Give the slope and y-intercept of the given line and then graph it. 8. 2x-3y=6 9. y=-2x 10. y=3 11. x+2=0

    asked by :)
  151. Algebra..

    Help ? Find the slope of the line that is a) parallel and b) perpendicular to the given line. 1. x=-8 2. y=10

    asked by Kenny
  152. physics

    A 316-kg boat is sailing 12.0° north of east at a speed of 1.60 m/s. 39.0 s later, it is sailing 36.0° north of east at a speed of 4.00 m/s. During this time, three forces act on the boat: a 31.4-N force directed 12.0° north of east (due to an auxiliary

    asked by marissa
  153. Integrated Marketing Communications

    Research any firm local or foreign and present a report and critique of their marketing communications

    asked by Lisa
  154. Algebra..

    Write the standard form of the equation of the circle with the given center and radius. 1. center (-2, 0) and r = 3

    asked by Pango
  155. Integrated Marketing Communications

    develop an IMC plan for a business.

    asked by Rhea
  156. 6th grade math

    What is base measurement? thanks

    asked by some girl
  157. Algebra

    X+12=2x+6

    asked by Anonymous
  158. economics

    the currency in Great Britain is pound and the price of a particular British car is 12,000. suppose the exchange rate is 0.67 per dollar. what iis the price of the British car in United States dollars?

    asked by ashley
  159. math

    "If the tire is 48 inches around what is its radius?

    asked by liczy
  160. English

    In the Tale of Two Cities question. Besides the foreshadowing of the blood bath to come, what does the people's response to the spilled wine show us?

    asked by kayla
  161. Economics

    The country of New Zealand decides to take 50% of its nation’s lottery money and use it to buy 1,000 acres of common grazing land in every county upon which any New Zealand shepherd may graze their sheepfor free, no strings attached. Based upon what you

    asked by Deborah
  162. Algebra 2 (Math)

    If A=(0,-17), B=(4,-5), and C=(12, -1), what is the length of the altitude from C to AB

    asked by Hannah
  163. Business Law

    Can someone give me an example or template how to write a practicum proposal for mediation.

    asked by R.T.
  164. math

    a piece of wire 3.5m long was cut into lengths each measuring 0.05m long.Calculate the number of pieces obtained.

    asked by saeed
  165. chemistry

    Find the potential energy, V(r), and the magnitude of the force, | F |, associated with: (a) the interaction between a proton and an electron separated by a distance of 0.529 Å (b) the interaction between the nucleus of Neon (Ne) and an electron separated

    asked by Taylor
  166. social studies

    what are the 4 maps. phyical, population , polical waht is the last one please

    asked by carina
  167. Math

    Which is the greatest number and why: .004 or .04

    asked by Losa
  168. social studies

    what are the 4 maps. phyical, population , polical waht is the last one please

    asked by carina
  169. Chemistry

    what is 39.5 grams of HCl in moles?

    asked by Victoria
  170. Physics

    A certain meter stick is calibrated in millimeters (the distance between two consecutive marks is ONE mm). A student measured the longest edge of a book and found that it was greater than 364 mm and less than 365 mm, but it was CLOSER to 365 mm than 364

    asked by Rene
  171. Stats

    Suppose X & Y are two independent stocks' returns with: E(X) = E(Y) =15% and V(X) = 144, V(Y) = 256 Problem 1. Buy half X and half Y, so w1 = w2 = 0.5 and Z = (X+Y)/2 Note: The answer says that the variance is 100 but I thought it would be 200. Since I

    asked by Matt
  172. Biology

    If you added .1 M NaOH to 1 M HCO2H a few millimeters at a time what would happen?

    asked by Unknown
  173. 6th grade math

    9 + x = 17 I know that x=8 but how did you get it Thanks

    asked by some girl
  174. Chemistry

    How many watts are in a kWh? Or how do you convert 30 kWh into joules/sec?

    asked by taylor
  175. geometry

    express 0.000 000 291 in scientific notation

    asked by john paul
  176. 6th grade math (please please answer!)

    9 + x = 17 I know that x=8 but I don't know how you figure it out

    asked by some girl
  177. Math

    If you had a new business and you had 30 customers the first week and 55 customers the second week and 80 customers the third week, what would you project for week 4? Explain how you arrived at your answer.

    asked by nate
  178. 6th grade math

    entify if the problem shown below is an example of the commutative, associate or distributive property. Explain your answer. (2 + a) + 7 = 2 + (a + 7) thanks

    asked by :)