Questions Asked on
July 8, 2014

  1. CHEMISTRY

    Balance the oxidation reduction equation in half reaction PbO2 + KCl => KClO + KPb(OH)3 thank you a lot

    asked by MAD
  2. Physics

    15. A refrigerator weighing 1500 N is to be lifted onto a truck bed that is 1.0 m above the ground. When pushed up a slanting ramp 2.0 m in length a force parallel to the ramp of only 800 N is required to move it at constant velocity. Comparing the work

    asked by Anonymous
  3. business math

    Assume 450,000 people line up on the streets to see the Macy's Thanksgiving Parade in 2010. If attendance is expected to increase 30%, what will be the number of people lined up on the street to see the 2011 parade?

    asked by jahnesha
  4. PHYSICS

    a 2.00kg object A is connected with a massless string across a massless, frictionless pulley to a 3.00kg object B. the smaller object rests on an inclined plane which is tilted at an angle of theta=40degrees. what are the acceleration of the system and the

    asked by EMMA
  5. Chemistry

    How many milliliters of O2 are consumed in the complete combustion of a sample of hexane, C6H14, if the reaction produces 325 mL of CO2? Assume all gas volumes are measured at the same temperature and pressure. The reaction is 2C6H14(g) + 19O2(g) ->

    asked by Luke
  6. marh

    The radii of two circles are in the ratio of 3 to 1. Find the area of the smaller circle if the area of the larger circle is 27 sq. in.

    asked by kyle
  7. Algebra

    Two boys are throwing a baseball back and forth. The ball is 4 ft above the ground when it leaves one child’s hand with an upward velocity of 36 ft/s. If acceleration due to gravity is –16 ft/s2, how high above the ground is the ball 2 s after it is

    asked by Junior
  8. calc

    Find the centroid of the region bounded by the given curves. y = 2 sin 3x, y = 2 cos 3x, x = 0, x = π/12

    asked by Zoey
  9. economics

    Wireless high speed internet is provided for free in the airport of the city of communityville. a) At first, only a few people use the service. What type a good is this and why? It’s a public good because it is neither excludable nor rival in

    asked by abdi
  10. Physics

    A stone is thrown upward from a bridge at a speed of 10 m/s. It narrowly misses the bridge on the way back down, and hits the water at 30m/s. what is the approximate height of the bridge?

    asked by Anonymous
  11. Geometry

    Point T is in the interior of ∠PQR. Find the m∠PQR if the following conditions apply. The m∠PQR = (10x - 7)°, the m∠RQT = 5x°, and the m∠PQT = (4x + 6)° The m∠PQR is=

    asked by jiovany
  12. CHEMISTRY

    Why the oxidation number of ( H ) is -1 in 1) N2H4 2) CaH2 while ( N ) is different from ( Ca ) ?

    asked by MAD
  13. Science

    State in words the specific information conveyed by a label reading of 0.25M oxalic acid

    asked by Peace
  14. History

    Why were the 1920s a tale of two nations? That is why did one sector the economy already experience a depression while another part of the economy boom? Be sure to identify which sector boomed and which sector was already in a depression. Why does the

    asked by Taylor Beach
  15. Physics-help please!

    A net torque of 54 N.m is applied to a disk with a rotational inertia of 13.2 kg.m2 What is the rotational acceleration of the disk?

    asked by Anonymous
  16. CHEMISTRY

    The Ksp of (hydroxyapatite ) Ca5(PO4)3OH is 6.8 * 10^-37 , and its molar concentration is 2.7 * 10^-5 mol/L ,, if this (hydroxyapatite) reacts with fluoride , then the F- ions replace OH- ions and the product is Ca5(PO4)3F ,, if we know the Ksp of (

    asked by MAD
  17. Statistics

    The life of an electric light bulb is known to be normally distributed with a mean of 2000 hours and a std. of 120 hours. Find the probability that the life of such a bulb would be. (a) greater than 2150 hours (b) within the range of 1850 hours to 2090

    asked by Heidi
  18. US Government

    Public opinion is crucial in a democracy, for if we are truly a government "for the people, by the people," it is then essential that we know what the people think and want. True or false?

    asked by Casey
  19. math

    A ship model is 0.5% actual size. If the model is 1 meter long, what is the actual length of the ship?

    asked by Johnny
  20. physics

    On a 60 km straight road,a bus travels the first 30km with a uniform speed of 30kmh .How fast must the bus travel the next 30 km so as to have average speed of 40 kmh for entire trip.

    asked by swift
  21. Physics

    A bullet is fired horizontally from a height of 4.9 m with a velocity of 680 m/s. How far away does the bullet land? A) 680 m B) 340 m C) 1360 m D) 170 m E) 800 m

    asked by Anonymous
  22. Algebra

    If you multiply a trinomial by a monomial, what type of polynomial will the product be? A. a monomial B. a binomial C. a trinomial D. it is not possible to determine

    asked by Emma
  23. science

    A comet is in an elliptical orbit around the Sun. Its closest approach to the Sun is a distance of 4.8 x10^10 m (inside the orbit of Mercury), at which point its speed is 9.1 x10^4 m/s. Its farthest distance from the Sun is far beyond the orbit of Pluto.

    asked by rachel
  24. questions

    Coumadin Take 5mg on even days, take 2.5 mg on odd days Disp: 30 days supply 6. If the stock supply is only 5mg tablets, how many tablets will be required to fill the prescription? tablets

    asked by KILL
  25. trigo

    The terminal side of angle θ lies on the line y=-mx for m>0 and x>0.calculate the values of the trigonometric function

    asked by tiq
  26. statisticss

    The time taken by a man to deliver milk is normally distributed with, mean 12 minutes and standard deviation 2 minutes. He delivers milk everyday estimate the probability that he takes. (a) longer than 17 minutes (b) between 9 and 13 minutes

    asked by Heidi
  27. Physics

    A car traveling with an initial velocity of 15.5 m/s accelerates at a constant rate of 3.0 m/s2 for a time of 3.6 seconds. (a) What is its velocity at the end of this time? A) 26.3 m/s B) 18.5 m/s C) 10.8 m/s D) 22.1 m/s E) 19.1 m/s

    asked by Anonymous
  28. Physics

    1. You are looking into a current carrying solenoid and notice that the compass needle indicates that you are at the south end of the magnetic field. What is the direction of the current in the coil and how do you know? Would it be clockwise because

    asked by Liz
  29. chemistry

    When magnesium metal and an aqueous solution of hydrochloric acid combine, they produce an aqueous solution of magnesium chloride and hydrogen gas. Using the equation, Mg (s) + 2HCl (aq) → MgCl2 (aq) + H2 (g), if 48.6 g of Mg and 150.0 g of HCl are

    asked by Kyra
  30. math

    What number sets does square root 3 belong to?

    asked by Anonymous
  31. ph

    Flagyl 250mg q8h x7D. What is the total daily dose

    asked by Ki
  32. calculus

    the time required for one complete oscillation of a pendulum is called its period. if the length L of the pendulum is measured in feet and the period P n seconds, then the period is given by P=2¶(L/g)^1/2, where g is constant. use differentials to show

    asked by brandy
  33. Physics

    a student pushes on a desk with a force of 75 N causing it to begin sliding. if the desk weighs 400 N then calculate the coefficient of static friction between the desk and the floor

    asked by Sabrina
  34. CHEMISTRY

    In relative oxidizing and reducing agents table ; 1) Is Al oxidized by Ni+2 2) Is Cu oxidized by Ag+ 3) Is Pb oxidized by Na+ 4) Is F2 reduced by Cl- 5) Is Br2 reduced by Cl- and if you or no , how it is as a rule to predict any ? thank you

    asked by MAD
  35. Physics

    Jeffrey wants to swim his girlfriend who is straight across from him, on the other side of a river bank. The river has a current velocity of 4km/h [W]. The width of the river is 300m. If it takes Jeffrey 15 minutes to reach her, a) how fast should the boy

    asked by Anonymous
  36. physics

    what is the resultant of two 65N identical one acting easterly and the northerly

    asked by john
  37. Physics

    Car A travels with speed v around curve number one, which has a radius r. Car B travels with speed 2v around curve number two, which has a radius 2r. What is the ratio of the two accelerations A/B? A) 2 B) 4 C) 1/2 D) 1/4 E) 1

    asked by Anonymous
  38. Chemistry

    Methane is formed in landfills by the action of certain bacteria on buried organic matter. If a sample of methane collected from a landfill has a volume of 200. mL at 741 torr and 27.2 °C, how many grams of methane are in the sample?

    asked by Luke
  39. math

    The given curve is rotated about the y-axis. Find the area of the resulting surface. y = 3 − x2, 0 ¡Ü x ¡Ü 4

    asked by hannah
  40. Physics

    Your mass is 50 kg. Suppose you are standing on a scale in an elevator which starts moving up and increases its speed at the rate of 2 m/s every second. What would be the reading on the scale? A) 590 N B) 490 N C) 390 N D) 100 N E) 0

    asked by Anonymous
  41. English

    1. I have lived in New York for 12 years. 2. I have been living in New York for 12 years. ---------------- #1 is grammatical? What about #2?

    asked by rfvv
  42. Physics

    A student is skateboarding down a ramp that is 8.33 m long and inclined at 24.5° with respect to the horizontal. The initial speed of the skateboarder at the top of the ramp is 4.12 m/s. Neglect friction and find the speed at the bottom of the ramp.

    asked by Robert
  43. History

    What made the Great Depression unprecedented? Were the measures taken to end the longest economic downturn in American history consistent with the principles of the Progressive Era or a radical redirection in American history?

    asked by Taylor Beach
  44. mechanism physics

    if a 10kg block with a velocity of 10m/s collide with a stationary block of 5kg , after collission the two blocks move stick together.calculate the velocity after collision for a 10 kg block?

    asked by Anonymous
  45. math

    5.Escape velocity is the speed necessary to escape the gravitational pull of a plant. The escape velocity of Earth is 11.3 kilometers per second, while the escape velocity of Saturn is 310% of that. What is the escape velocity of Saturn?

    asked by Johnny
  46. Physics

    A girl on a sled with a total mass of 90kg starts from an elevation of 100meters. At the bottom of the run her speed is 30m/s. How much energy in joules was lost due to friction?

    asked by Anonymous
  47. pharmacy calculations

    Coumadin Take 5mg on even days, take 2.5 mg on odd days Disp: 30 days supply If the stock supply is only 5mg tablets, how many tablets will be required to fill the prescription? If the stock supply is only 2.5mg tablets, how many tablets will be required

    asked by Ki
  48. Math

    I have 3 questions: 1) If ABC and DEF are three- digit numbers, which of the following could be the number of digits in the product of ABC and DEF? i. 4 ii. 5 iii. 6 I don't have the vaguest idea on how to do this and what type of math it is part of... My

    asked by Bethany
  49. History

    Why did the US economy lurch from boom to bust between 1920 and 1930? How did politicians try to restore prosperity?

    asked by Taylor Beach
  50. Geography

    Is Greenland part of North America?

    asked by Celest
  51. Chemistry

    A 56 g sample of peanut oil has a volume of 60.9 cm^3. Calculate the density of the peanut oil.

    asked by Tom
  52. Math

    Ship A heads north at a speed of 22.2 km/h while ship B heads east Twenty two hours later they are 863 km apart

    asked by Regina
  53. math

    3.Students at one school sell magazine subscriptions to raise money for athletic equipment. The school keeps 20% of sales. How many dollars worth of subscriptions must be sold to make $1500?

    asked by Johnny
  54. Math

    the time required for one complete oscillation of a pendulum is called its period. if the length L of the pendulum is measured in feet and the period P n seconds, then the period is given by P=2¶(L/g)^1/2, where g is constant. use differentials to show

    asked by brandy
  55. History

    Outline the origins and effects of the Progressive Movement. How was this movement affected by World War I?

    asked by Taylor Beach
  56. BUSINESS IT

    firstly write a program to accept the number of telephone calls made by a customer and the print out the rate in cents. secondly define a structure employee with name, category , salary, tax as a member. read the name category and salary of employee and

    asked by Daisy
  57. English

    1. I haven't seen you for a while. 2. I haven't seen you in a while. 3. I haven't seen you for ages. 4. I haven't seen you in ages. 5. I haven't seen you for a long time. ------------ Are they all grammatical and the same?

    asked by rfvv
  58. MATH

    need word problem help. One half of the total budget of $5,000 was for salaries. Three fifths of that amount was paid to 4 employees. How much of the budget was spent on employees? 1/2 of 5,000 = 2,500 2500 divided by 3/5 = 4166 2/3 Am I on the right

    asked by Amy
  59. science

    How much heat must be removed from 0.20kg of water at 10.0oC to form ice at 0oC?

    asked by Duane
  60. maths

    QR is parallel to ST and PQ:QR = 2:1. Given the area of triangle PST is 18cm2, the area of triangle PQR in sq cm is?

    asked by Stefan
  61. CHEMISTRY

    In half reaction method of the chemical equation balancing , how about those redox reactions that they don't contain any (H) and ( O ) atoms ?

    asked by MAD
  62. Environmental Science

    In two or three well-developed paragraphs, summarize how the reproductive behavior of individuals can affect the growth rate of their population.

    asked by Yazmen
  63. geography

    List as many ways as you can remember about how you are involved in the burning of fossil fuels on a dily basis.

    asked by Bria
  64. Math (statistics)

    In an examination a candidate is given the four answers to four questions but is not told which answer applies to which question. He is asked to write down each of the four answers next to its appropriate question. b). show that there are 6 ways of getting

    asked by Heidi
  65. math

    It is important for Bob to have a gross salary in his fifth year of at least $100,000. He is promised salary increases of 3 percent per year in the second and third years and 5 percent thereafter. What must be his starting salary be to achieve his goal? My

    asked by Charlie
  66. Chemic

    Hello could you help me answer to one question please. From 98% Sulphuric acid to make 50ml 5% sulphuric acid How to DIlute with water , how much need ?

    asked by Paul
  67. physics

    a man weighing around 260 pounds falling 5.5 feet vertically would have generated a force of how many pounds?

    asked by Anonymous
  68. Physics

    You measure a uniform electric field of 13.3 x 10^3 N/C between two equipotential surfaces. One surface is at a potential of 1543 V and the other is at 951 V. What is the separation between the two surfaces? How would I solve this?...What equations would I

    asked by Fed
  69. Math

    Write a formula expressing the information: i)Rose paid twice as much as Mike I used R for Rose and M for Mike The formula I cam up with is R=2M ii)Taxes are 6 percent of income [Use T and x] So I wrote it like this T(0.06)/X iii)There are twenty times as

    asked by Mari
  70. question

    Flagyl 250mg q8h x7D. What is the total daily dose?

    asked by KILL
  71. physics

    Regarding "Period of Mass on a Spring", What will the oscillation period be if the stiffness of the spring is reduced? Will it become shorter, longer, or unchanged?

    asked by Cleopatra
  72. sentence fragment

    Both Egypt and Mesopotamia developed an organized government that consisted of one ruler maintaining order, but Egypt had a centralized authority while Mesopotamian political powers was more distributed among all the city-states. This is a topic sentence

    asked by tony
  73. Quest

    How do you write 9th july 2014 in 5 letters without using numbers ?

    asked by Anonymous
  74. us history

    The Quasi War was waged between the United States And?

    asked by kayla
  75. English

    1. He has studied math for three hours. 2. He has been studying for three hours. ---------------- Are both grammatical? Which one is commonly used?

    asked by rfvv
  76. Algebra

    I am trying to solve the following using the Quadratic Formula but I am confused. Can you explain the steps? Solve (find all complex-number solutions): t^2 + 3 = 6t Thank you

    asked by MissPatte
  77. Canadian electrical code

    if the bare main contact conductors a a hoist are 21 meters long and do not have intermediate supports , the smallest copper wire that may be used for the conductors is

    asked by ray
  78. History

    How did World War II transform American society? Was the impact of the conflict as profound on American society as it was on America's position in the world?

    asked by Taylor Beach
  79. English

    There are many balls. 1. Some are blue, and others are yellow. 2. Some are blue, and some are yellow. 3. some are blue, and the others are yellow. 4. some are blue, some are yellow, and some are white. 5. some are blue, others are yellow, and some are

    asked by rfvv
  80. Physics

    Two parallel wires both carry currents directed from left to right .A circular wire loop lies in the plane of the two wires, mid-way between them.As always, assume the currents are positive charges. Sketch the changes in magnetic fields induced and the

    asked by Just need explanation not an answer
  81. math

    In order for a spacecraft to reach Earth's orbital velocity, it must achieve a speed of 17,500 mph in 610 seconds after its first stage burnout where it should have achieved a speed of 1530 mph. What percent increase in speed per second is necessary after

    asked by Charlie
  82. Chemistry

    A mixture of N2, O2, and CO2 has a total pressure of 928. torr. In this mixture the partial pressure of N2 is 31.0 cm Hg and the partial pressure of O2 is 4.00 dm Hg. What is the partial pressure of the CO2 (in torr)?

    asked by Luke
  83. Physics

    Two charged particle are fixed on the x-axis 11 cm apart. The one on the left has a net charge of +25uc and the one on the right has a net charge of -11uc. What is the magnitude of the electric field 10 cm to the right of the negative charge? How do you

    asked by Hank
  84. Physics

    Do Newton's Law apply to motion inside your car? A.Yes, but only when at rest. B.Yes, but only when traveling at constant velocity or at rest. C.No, never. D.Yes, always. So I tried answering the question with D at first because I was thinking that it is a

    asked by Sophie
  85. Physics

    Due to a strong wind from the west of 65 km/h, a plane ends up traveling 330 km/h [W 15 S] relative to the ground. What was the magnitude of the velocity of the plane relative to the air in km/h?

    asked by Anonymous
  86. psychology

    How has Maslow's hierarchy of needs affected public policy?

    asked by Rena
  87. chemistry

    What is the mass of water obtained when mix 100.0 mL of 2.5 M. HNO3 with 100.0 mL of 2.55 M. KOH?

    asked by charles
  88. Physics

    A ball is thrown as a projectile with a horizontal velocity of 30 m/s and a vertical velocity of 30 m/s. At the highest point which of the following is true? A) The velocity is zero B) The acceleration is 0 C) The acceleration is 9.8 m/s2 D) The

    asked by Anonymous
  89. Physics

    Car A travels with speed v around curve number one, which has a radius r. Car B travels with speed 2v around curve number two, which has a radius 2r. What is the ratio of the two accelerations A/B? A) 2 B) 4 C) 1/2 D) 1/4 E) 1

    asked by Anonymous
  90. English

    1. They have eaten Korean food before. 2. They ate Korean food before. 3. They had eaten Korean food before. ----------- Are they all grammatical? Then what is the difference among them?

    asked by rfvv
  91. PHI208: Ethics and Moral Reasoning

    What other similarity can we find in Freeman’s stakeholder theory with Kant’s moral theory

    asked by Erica
  92. PHI208: Ethics and Moral Reasoning

    Which one of these is not a principle that can be drawn from the Categorical Imperative?

    asked by Erica
  93. Math 221

    What is 5(8+v)= Please break it down for me to get a better understanding?

    asked by Jenni
  94. English

    1. It has been such a long time. -------------------- What does 'It' refer to in Sentence 1? Does 'It' an impersonal pronoun referring to 'the time'?

    asked by rfvv
  95. History

    What were the effects of Reconstruction on American life?

    asked by Taylor Beach
  96. History

    How did the Gilded Age transform American life? How was the economy, society, and culture changed?

    asked by Taylor Beach
  97. English

    1. I have had many different jobs. 2. I have had two jobs. --------------------- Does #2 mean that he has two jobs now? Does #1 mean that he has many different jobs now? Or does #1 mean that he has ever experienced having many different jobs?

    asked by rfvv
  98. History

    How did World War II transform American society? What were the internal and external effects?

    asked by Taylor Beach
  99. CHEMISTRY

    Assume that the ( S ) ( S ; alphabet ) is the solubility in mol/L of AB2 compound , , then what is the concentration of A and B ? and what is the Ksp of AB2 compound ? thank you a lot

    asked by MAD
  100. science

    A student expends 9.6W of power lifting a textbook 0.50m in 3.0s with a constant velocity. How much work is done?

    asked by Duane
  101. APPLICATION PROGRAMMING

    Write a formular on aprogram to generate the following patterns

    asked by nambooze
  102. physics

    15 KG HEIGHT 200 METERES WHAT IS THE CHANGE IN TEMPERATURE

    asked by KIM
  103. chem/math

    I need help solving for x here (I don't get the right answer, which is supposed to be x=0.137) 3.88 = 3.74 + log (x/0.1) Please explain how you would get that answer Thank you

    asked by Ann
  104. statistics

    What formula do I use to solve: A sample with a mean of M = 40 and a variance of s2 = 20 has an estimated standard error of 2 points. How many scores are in the sample?

    asked by brenda
  105. Precal

    What is the first natural number that causes the statement:(2 + 3)n 4n + 3n to fail?

    asked by Tashai
  106. chemistry

    A student didn’t read step 4 in the procedure and assembled the cells based on Figure 1, connecting the device to the ammeter right away. When she gets to step 5 she realizes her error, but instead of estimating the initial reaction time she simply notes

    asked by anaoymus
  107. Math

    what is the maximal number of consecutive 3-digit numbers that have at least one odd digit?

    asked by Bego
  108. Chemistry

    When a sample of neon with a volume of 683 mL and a pressure of 0.792 atm was heated from 19.0 to 76.0 °C, its volume became 733 mL. What was its final pressure (in atm)?

    asked by Luke
  109. Chemistry

    A mixture of ammonia and oxygen is prepared by combining 0.330 L of NH3 (measured at 0.790 atm and 22°C) with 0.210 L of O2 (measured at 0.820 atm and 48°C). How many milliliters of N2 (measured at 0.740 atm and 100. °C) could be formed if the following

    asked by Luke
  110. math

    The fourth and ninth term of an a.p are -3 and 12 repectively find:the common different and the sum of the first seven term.

    asked by Utibe