Questions Asked on
October 4, 2011

  1. Stoichiometry

    Find the limiting reactant for the initial quantities of reactants 2k(s) + Cl2(g)--> 2KCl(s) 1.8 mol K; 1 mol Cl2 I'm lost

    asked by Monique
  2. Stoichiometry

    Consider the reaction between reactants S & O2 2S(s) + 3 O2(g) ==> 2 SO3(g) If a reactant vessel initially contains 5 mol S and 9 mol O2, how many moles of S, O2 and SO3 will be in the reaction vessel once the reactants have reached as much as possible?

    asked by Monique
  3. pysics

    A projectile of mass 0.777 kg is shot from a cannon, at height 6.6 m, as shown in the figure, with an initial velocity vi having a horizontal component of 7.8m/s. The projectile rises to a maximum height of ∆y above the end of the cannon’s barrel and

    asked by steve
  4. Chemistry

    Which of the subshells in the electron configuration of Hf behave as core orbitals Check all that apply 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d

    asked by Caitlin
  5. Stoichiometry

    For each precipitation reaction, calculate how many grams of the first reactant are necessary to completely react with 17.3 g of the second reactant. 2KI(aq) + Pb(NO3)2(aq)--->PbI2(s) + 2KNO3(aq) Not looking for the answer I really want to know if I did it

    asked by Monique
  6. Chemistry

    What do we call the part of the universe that is not part of the system

    asked by Caitlin
  7. Math

    Write the fact family for 3, 9, , and 12.

    asked by khrys
  8. Chemistry

    An electron moves with a velocity of 2.5 x 10^8 cm/s. What is its wavelength? (The mass of an electron is 9.109 x 10^-28 g.)

    asked by Anonymous
  9. Physics

    The front 1.20 m of a 1,350-kg car is designed as a "crumple zone" that collapses to absorb the shock of a collision. (a) If a car traveling 22.0 m/s stops uniformly in 1.20 m, how long does the collision last? s (b) What is the magnitude of the average

    asked by Allie
  10. chemistry

    calculate the number of gram of Al2S3 which can be prepared by the reaction of 20 gram of Al and 30 gram of sulpher . how much the non limiting reactant is in excess?

    asked by sss
  11. chemistry

    1. A sample of 10.7 g of CO reacts completely with O2 to form CO2. How many grams of CO2 will be formed? 2. Urea (NH2)2CO is prepared by reacting ammonia with carbon dioxide. The byproduct is water. 637.2 g of ammonia are reacted with 787.3 g of carbon

    asked by Anonymous
  12. Chemistry

    You are in a mountain range with atmospheric air pressure of 520 mmHg , and you wish to boil some eggs. What is the approximate boiling point of the water at this air pressure?

    asked by Steph
  13. Calculus

    A square is inscribed in a circle. If the area of the circle is 144(pi)cm*squared* --sorry the square root thing isnt showing up. Then the exact perimeter of the square is... I really don't get how to solve this, but the answer is supposed to somehow be

    asked by -Untamed-
  14. chemistry

    sodium borohydride (NaBH4) is used industrially in many organic syntheses. one way to prepare it is by reacting sodium hydride with gaseous diborone. Assuming an 86.8% yield,how many grams of NaBH4 can be prepared by reacting 7.98g of sodium hydride and

    asked by help
  15. english

    Which of the following sentences uses parallelism effectively? A. The large plant-eating dinosaurs were quite slow, rather stupid, and extremely hungry. B. The Red Sox fans screamed, yelled, and were applauding wildy. C. The report was good because it was

    asked by Diane
  16. HARD PHYSICS

    A playground is on the flat roof of a city school, 5.7 m above the street below (see figure). The vertical wall of the building is h = 7.10 m high, to form a 1.4-m-high railing around the playground. A ball has fallen to the street below, and a passerby

    asked by Anonymous
  17. physics

    In terms of given quantities, by what amount of time, , does Tim beat Rick? It will help you check your answer if you simplify it algebraically and check the special case . Express the difference in time, in terms of , , and .

    asked by Amy Love
  18. English-Commas,Check

    The horse ran down the hill and through the meadow. a. Correct 2. (Points: 2) The restaurant has openings for waitresses bus boys and fry cooks. b. Incorrect 3. (Points: 2) Whenever I hear the opening measure of Beethoven's Fifth Symphony I get goose

    asked by HM
  19. Chemistry

    How much 1,2-dibromocyclohexane should be obtained by adding bromine in carbon tetrachloride to 1g of cyclohexene

    asked by john
  20. Algebra 2 (Linear Programming)

    An airline will provide accommodations for a minimum of 2000 first-class, 1500 tourist, and 2400 economy-class passengers. Airplane P-1 costs $12,000 per miles to operate and can accommodate 40 first-class, 40 tourist, and 12 economy-class passengers.

    asked by Peter
  21. Physics

    In a scene in an action movie, a stunt man jumps from the top of one building to the top of another building 3.5 m away. After a running start, he leaps at an angle of 14 with respect to the flat roof while traveling at a speed of 5.6 m/s. The

    asked by Travis
  22. Government US

    2. Which of the following statements best describes the relationship today between government and the economy in the United States? a. The economy is largely self-regulating. b. The government subsidizes economic interests but otherwise leaves them to

    asked by HM
  23. chemistry

    Give the mass in grams of diphosphorus pentoxide that contains 2.0 x 10^(24) oxygen atoms.

    asked by miriam
  24. Chemistry

    Write the correct symbol in standard form for the isotope of platinum that contains 118 neutrons.

    asked by Haile
  25. Physics

    An unmarked police car traveling a constant 80 is passed by a speeder traveling 145 .Precisely 2.50 after the speeder passes, the police officer steps on the accelerator; if the police car's acceleration is 1.80 , how much time passes before the police car

    asked by George
  26. Physics

    A rope attached to an engine pulls a 240 Newton crate up an 14.7 degree ramp at a constant speed. The coefficient of kinetic friction for the surfaces of the crate and ramp is .32. What is the magnitude of the force that the rope exerts on the crate

    asked by Rachel
  27. Physics

    A high-speed photograph of a club hitting a golf ball is shown in the figure below. The club was in contact with a ball, initially at rest, for about 0.0037 s. If the ball has a mass of 55 g and leaves the head of the club with a speed of 2.7 102 ft/s,

    asked by Allie
  28. math

    the arcade has three pinball machines and five video games.If a person wants to play one pinball machine and one video game,how many different combinations of games could that person play?

    asked by felix
  29. chemistry

    Write a balanced chemical equation for the reaction that occurs when the hydrocarbon styrene, {\rm C}_{8}{\rm H}_{8}(l), is combusted in air.

    asked by seema
  30. math

    A movie theater runs two films continuously. One film runs for 85 minutes and a second film runs for 100 minutes. Both movies begin at noon. When will the two films start again at the same time?

    asked by shelly
  31. chemistry

    Calculate the pH at the point in the titration of 25.00 mL 0.108 M HNO2 at which 10.00 mL 0.162 M NaOH have been added. For HNO2, Ka=5.1 x 10^-4 and: HNO2 + OH- -----> H2O + NO2- I know that HNO2 is a weak acid and NaOH is a strong base. Help given to me

    asked by Holly
  32. chemistry

    The density of a 2.45 M aqueous methanol solution is .976 g/ml. what is the mass of water present in 1.00 liter of this solution

    asked by kyle
  33. chemistry 12

    For the acid-base neutralization reaction of Carbonic acid, H2CO3(aq) and lithium hydroxide, LiOH(aq), write the blanced: a)complete equation b) Ionic equation c) Net ionic equation. ----------------------- i got a) H2CO3(aq) + 2LiOH(aq) = 2H2O(l)

    asked by Robyn
  34. Chemistry

    a) Calculate [H3O^+] in a 0.15M solution of benzonic acid, HC7H5O2(aq) having K of 6.4x10^-5. b) Calculate the per cent ionization of the HC7H5O2. I got.. A) 0.16M but i did it again and got 7.2M so i'm very stuck as to the very different answers i got. B)

    asked by Sarah
  35. Physics

    A 79.0-kg fullback running east with a speed of 4.00 m/s is tackled by a 93.0-kg opponent running north with a speed of 3.00 m/s. (a) Why does the tackle constitute a perfectly inelastic collision? (b) Calculate the velocity of the players immediately

    asked by Allie
  36. Just for "Ms.Sue"

    Hey, "Ms.Sue". Ms.Sue you have been very helpful. But I keep getting stuck. 5th grade math is a challenge especially after my teachers stroked and we were out of school for almost all of September and no one in my house understands this new math either. I

    asked by Candy Corn 
  37. Stoichiometry

    Find the limiting reactant for the initial quantities of reactants 2k(s) + Cl2(g)--> 2KCl(s) 1.8 mol K; 1 mol Cl2 I'm lost

    asked by Monique
  38. Chemistry

    If 200. mL of 2.00 M H3PO4 solution is added to 600. mL of 2.00 M NaOH solution, the resulting solution will be ____ molar in Na3PO4.

    asked by Fran
  39. Chemistry

    Silver nitrate (AgNO3) reacts with sodium chloride as indicated by the equation AgNO3 + NaCl ! AgCl + NaNO3 . Howmany grams of NaCl would be required to react with 518 mL of 0.543 M AgNO3 solution? Answer in units of grams

    asked by Broy
  40. Physics

    A car can slow down at 5.10 m/s2 without skidding when coming to rest on a level road. What would its acceleration be if the road were inclined at 12o uphill? [Ask yourself – What is the same about the situation on the level road and on the incline?]

    asked by william
  41. Physics

    You are pulling your little sister on her sled across an icy (frictionless) surface. When you exert a constant horizontal force of 113 N, the sled has an acceleration of 1.3 m/s2 If the sled has a mass of 6.6 kg, what is the mass of your little sister?

    asked by Jessica
  42. ~History~

    Write an essay that compares and contrasts the ways in which China and Japan responded to the West. Describe how each nation’s decision to respond to the West affected its domestic and foreign affairs in the years that followed. (i researched a lot on

    asked by *Anna*
  43. DR.BOB HELP CHEMISTRY!

    How many milliliters of a 0.3 molar HCl solution are needed to react completely with 8 grams of zinc according to the following equation? ? HCl + ? Zn → ? ZnCl2 + ? H2 Answer in units of mL

    asked by Rara
  44. sport

    what are the legal factors and regulatory bodies that influence health and safety in sport thank you.

    asked by elizabeth
  45. science

    Suppose you are standing on the sidewalk. Describe the direction of your motion relative to the car and plane. answer my motion would seem slower than the car but faster than the plane. I know there has to be a better answer, any suggestions?? Thank you.

    asked by jill
  46. chemistry 12

    Identify the two conjugate acid-base pairs in each of the following: A) H2PO4^-(aq) + HSO4^-(aq) = H3PO4(aq) + SO4^2-(aq) B) HI(aq) + CN^-(aq) = HCN(aq) + I^-(aq) i got a) H2PO4^- , HSO4^- and SO4^2- b) CN^- and I^- But i don't think that these are right,

    asked by Robyn
  47. calculus

    For what values of x does the graph of f(x)=x+2sinx have a horizontal tangent?

    asked by Shelley
  48. Lati

    What's the accusative case for 1. magna urbs 2. rex fortis 3. navis longa 4. matres laetae 5. omnes puellae

    asked by Ashley
  49. physics

    You head downstream on a river in a canoe. You can paddle at 5.2 km/h and the river is flowing at 2.2 km/h. How far downstream will you be in 30 minutes?

    asked by Eddie
  50. trig

    if cot 17 degrees = 3.2709, find tan 73 degrees

    asked by james
  51. chemistry

    How many moles of carbon, hydrogen, and oxygen are present in a 100g sample of ascorbic acid?

    asked by Anonymous
  52. Chemistry

    What are the molecular and net ionic equations for potassium chloride + ammonium phosphate

    asked by Chris
  53. physics

    A boat heads directly across a river 39 m wide at 3.9 m/s. The current is flowing downstream at 2.4 m/s. (a) What is the resultant velocity of the boat? m/s (magnitude) ° (direction) (b) How much time does it take the boat to cross the river? s (c) How

    asked by Eddie
  54. physics

    A projectile of mass 0.777 kg is shot from a cannon, at height 6.6 m, as shown in the figure, with an initial velocity vi having a horizontal component of 7.8m/s. The projectile rises to a maximum height of ∆y above the end of the cannon’s barrel and

    asked by steve
  55. Government US

    33. Which of the following is correct about environmental policy? a. The national parks are subject to a dual use policy of preservation, recreation and exploitation of the rich natural resources. b. The Environmental Protection Agency was elevated to

    asked by HM
  56. maths

    what single discount is successive discounts of 30% and 50% equivalent to?

    asked by haryot
  57. calculus

    A street light is at the top of a 16 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 4 ft/sec along a straight path. How fast is the tip of her shadow moving when she is 30 ft from the base of the pole?

    asked by Anonymous
  58. Physics

    A hot air balloon is rising at a constant velocity of 13.3 m/s. When the balloon is at a height of 15 m, a heavy object is dropped overboard. IF air resistance on the object is neglected, how long does it take for it to reach the ground?

    asked by Jessica
  59. USA PoliScience

    Select a two interest groups that are on opposite side of some issue or policy goal. I was thinking I should write about American Freedom Agenda- But does the question mean we have to find two groups against each other? Or one group on an issue.. and is my

    asked by HM
  60. chemistry

    How many moles of carbon, hydrogen, and oxygen are present in a 100g sample of ascorbic acid?

    asked by julia
  61. physics

    the weight of a solid is 80g in air and 50g in liquid of relative density 1.5. calculate the relative density of the solid.

    asked by pavatharani
  62. chemistry

    An unknown mixture containing KClO3 was added to an ignition tube weighting 41.960g, The tube and mixture was then found to weight 43.772g. After the first heating, the tube and its contents weighed 43.621g. After the second and third heatings, it weighed

    asked by help
  63. statistics

    below is the test scores for students in a statistics class.80,65,79,83,60,79,90,77,84,93.the professor assigned a grade of c to students whose test scores were within 5 points of the mean in either direction .how many students got cs?list their test

    asked by ron
  64. Physics

    Tarzan, who weighs 899 N, swings from a vine through the jungle. How much work is done by the tension in the vine as he drops through a vertical distance of 4.45 m?

    asked by Suzy
  65. Physics

    A rigid tank having a volume of 0.100 m3 contains helium gas at 150 atm. How many balloons can be inflated by opening the valve at the top of the tank? Each filled balloon is a sphere 0.300 m in diameter at an absolute pressure of 1.30 atm.

    asked by Jim
  66. Social Studies 9

    HELP!!!! How did voltaire use irony to insult rousseau. i really need to know !!.

    asked by Stephanie
  67. college chem

    Ethanol (C2H5OH) boils at a temperature of 78.3oC. What amount of energy, in joules, is necessary to heat to boiling and then completely vaporize a 20.0 g sample of ethanol initially at a temperature of 13.6oC. The specific heat of ethanol is approximately

    asked by john
  68. chemistry

    how much heat is needed to convert 8.75g of 100c water to steam?

    asked by Anonymous
  69. chemistry

    Will a precipitate form when an aqueous solution of (NH4)4CO3 is mixed with Fe(NO3)3

    asked by Anonymous
  70. Physics

    We consider the case shown in the figure below. Two objects with masses m and M are connected with a taut string running over a pulley. The pulley rotates without friction. The two masses are given as M = 6.23 kg and m = 2.54 kg. A second taunt string

    asked by Kristen
  71. Chemistry

    A 36.0mL sample of 1.20 M KBr and a 56.0mL sample of 0.700 M KBr are mixed. The solution is then heated to evaporate water until the total volume is 60.0mL. What is the molarity of the KBr in the final solution?

    asked by Cecelia
  72. Chemistry

    How many moles and number of ions of each type are present in the following aqueous solution? 113 mL of .490 M aluminum chloride.

    asked by Tyler
  73. 5th Grade Math

    Hector's bean plant grew 14 inches in 3 months. Which shows how many inches the plant grew each month? F)3/14 inch G) 3 1/4 inches H) 3 2/3 inches J) 4 2/3 inches And how do i get the answer?

    asked by Nicole
  74. physics

    A spy in a speed boat is being chased down a river by government officials in a faster craft. Just as the officials' boat pulls up next to the spy's boat, both reach the edge of a 7.7 m waterfall. If the spy's speed is 19 m/s and the officials' speed is 29

    asked by faviola
  75. calculus

    A mass on a spring vibrates horizontally on a smooth level surface. Its equation of motion is x(t)=8sint, where t is in seconds and x in centimeter. a. Find the velocity and acceleration at time t b. Find the position, velocity, and acceleration of the

    asked by bob
  76. Math

    Determine whether the following statement makes sense or does not make sense, and explain your reasoning: By modeling attitudes of college freshmen from 1969 through 2006, I can make precise predictions about the attitudes of the freshman class of 2020. A)

    asked by Kara
  77. chemistry

    What is the pH of a solution prpared by mixing 50.0 ml of .200 M HCLO4 with 10.0 ml of .100 M KOH

    asked by Rachel
  78. Chemistry

    2. Why is it easier to remove excess acetic acid from the products than excess isopentyl alcohol?

    asked by Anonymous
  79. Word Problems!!!!

    Help with the following problems: 1. Leah bought 2 boxes of cookies. She ate 3 and found that she had 21 left. How many cookies were in each box? 2. Arturo built 3 sandcastles with 6 towers each. Paco built 5 sandcastles with 4 towers each. Who built more

    asked by Candy Corn 
  80. physics

    You head downstream on a river in a canoe. You can paddle at 5.2 km/h and the river is flowing at 2.2 km/h. How far downstream will you be in 30 minutes?

    asked by Eddie
  81. math

    a bird flies due north 2 miles then east 3 miles then north 4 miles then east 5 miles how far is the nest from the ocean

    asked by mary
  82. physics

    While flying due east at 130 km/h, an airplane is also carried northward at 41 km/h by the wind blowing due north. What is the plane's resultant velocity? (Draw vector diagram to solve problem.) Magnitude km/hDirection (north of east) 72° 18° 18° 72°

    asked by Eddie
  83. Algebra 2

    A bicycle builder makes two models. The basic model requires 2 hours of frame construction, 4 hours of assembly, and 1 hour of finishing. The deluxe model requires 3 hours of frame construction, 3 hours of assembly, and 2 hours of finishing. Each day 36

    asked by Peter
  84. phusics

    A car can slow down at 5.10 m/s2 without skidding when coming to rest on a level road. What would its acceleration be if the road were inclined at 12o uphill?

    asked by william
  85. Math: Linear Programming

    Describe the linear programming situation for this system of inequalities. x≤1 , y ≥0 , 3x+y≤5 infeasible unbounded an optimal solution alternate optimal solutions Describe the linear programming situation for this system of inequalities where you

    asked by HC
  86. Social studies

    What were the earliest civilizations in Mesopotamia? What would be a physical description of Mesopotamia? Cultural description of southwest Asia?( main language, religion, resources,etc)

    asked by Ansley
  87. Algebra Help!!

    Find an example of scientific notation in real life Explain why the number was written in scientific notation. Create a multiplication problem with scientific notation

    asked by Katie A
  88. Calculus

    If f(x)=[(x−1)/(1+5x)], there are two points on the graph of y=f(x) at which the tangent lines are parallel to the line x−2y=2. Type in the x values of these points. Type the smaller number first, then the larger number.

    asked by Joe
  89. math

    Bethany has 40 apples. Write a subtraction story about the apples that would require regrouping. Then write the answer in a complete sentence.

    asked by Amanda
  90. physics

    a rock was thrown at the height of 50.0 m above the ground with an initial velocity of 20.0 m/s straight upward.

    asked by hd
  91. Government US

    28. Which of the following statements is true? a. X The national debt was eliminated in 1998. b.X The Chair of the Fed creates the president’s budget on an annual basis. c. Keynes advocated deficit spending to counteract an economic downturn. d.X The

    asked by HM
  92. Physics

    After the Sun exhausts its nuclear fuel, its ultimate fate may be to collapse into a white dwarf state. In this state, it would have approximately the same mass as it has now, but its radius would be equal to the radius of earth. (a) Calculate the average

    asked by bob
  93. 5th Grade Math

    what fraction is the largest? 3 2/3 or 3 3/4 or 3 1/2 or 3 3/5?

    asked by Nicole
  94. Math

    Pretty Please help me undderstand ratios and rates. I have been to a buncha other sites trying to figure them out and I just don't get them. I would really apprieciate it if some one could help. Pretty please with whip cream and cherries on top :)

    asked by Alice
  95. Physics

    A dockworker loading crates on a ship finds that a 19-kg crate, initially at rest on a horizontal surface, requires a 70-N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 60 N is required to keep it moving

    asked by Ricky
  96. physics

    Identical +1.39 µC charges are fixed to adjacent corners of a square. What charge (magnitude and algebraic sign) should be fixed to one of the empty corners, so that the total electric potential at the remaining empty corner is 0 V?

    asked by ashley
  97. Calculus

    Find dy/dx by implicit differentiation: x^2-2xy+y^3 = c Thank you!

    asked by Linda
  98. Physics

    A mass of 18 kg is being pushed up a frictionless incline with a constant force of 20 Newtons directed parallel to the incline, up the incline. At the top of the incline the mass is moving at 23 m/s up the incline. If the angle of inclination is 58 degrees

    asked by Tina
  99. Identify Topic Sentence

    Read each of the following paragraph and underline the topic sentence. Many plant foods naturally contains toxins in small amounts, so through they're generally safe to eat, consuming them in very large amounts could be harmful. Potatoes that have been

    asked by ME
  100. physics

    You head downstream on a river in a canoe. You can paddle at 5.2 km/h and the river is flowing at 2.2 km/h. How far downstream will you be in 30 minutes?

    asked by Eddie
  101. mathematics

    the london eye in england is the biggest big wheel in the world. it rotates with people on it so that they can get a view of the city of london from high up. there are 32 cabins attached to the wheel that carry passengers and it takes one approximately 30

    asked by mahlodi
  102. Socials

    Nationalism Imperialism Autonomy Definition of all these three. Nationalism means supporting your own country. Imperialism means supporting Britain always. Autonomy means Independence. If you could add to these definitions that would be great. Also for the

    asked by Mysterious
  103. english

    for the article "DON'T LEAVE ME HERE TO DIE" i need to ask tought questions as a interviewer, what kind of tough questions could i ask? one of my question is: Did you have guilt over not saving Fran? can I please have questions.

    asked by Anonymous
  104. Physics

    A spring has a spring constant of 42 N/m. How much work is required to stretch the spring 1.5 cm from its equilibrium position?

    asked by Kels
  105. physics

    How do we compensate for thermal expansion /contraction in the construction of railway tracks? How do we compensate for thermal expansion /contraction in the construction of steel bridges? How do we compensate for thermal expansion /contraction in the

    asked by anil
  106. 5th Grade Math

    Marissa and her friends have 3 pizzas. they eat 2 1/4 of the pizzas. which model shows how much of the pizza they ate? On the pic they have they have each pizza having 8 slices each, so what would the pies that have been eaten look like?

    asked by Nicole
  107. Physics

    A man drags a table 4.25 m across the floor, exerting a constant force of 54.0 N, directed 28.0° above the horizontal. I have found the work done by the applied force to be 202.6 J but I can't find the second part of the question which is below. (b) How

    asked by Cindy
  108. math

    decimal number patterns rules 4.8, 9.6, 8.9, 17.8, 17.1

    asked by Peter
  109. Chemistry

    A 36.0mL sample of 1.20 M KBr and a 56.0mL sample of 0.700 M KBr are mixed. The solution is then heated to evaporate water until the total volume is 60.0mL. What is the molarity of the KBr in the final solution?

    asked by Cecelia
  110. math

    Find b such that (8x+1/b)-2=x has a solution set given by {3}. b =

    asked by Lesley
  111. Writing

    Does Feature Writer means a creative writer ?

    asked by Laruen
  112. Physics

    Diane rows a boat at 8.3 m/s directly across a river that flows at 5.6 m/s. (a) What is the resultant speed of the boat? m/s (b) If the stream is 250 m wide, how long will it take Diane to row across? s (c) How far downstream will Diane be

    asked by Eddie
  113. physics

    An airplane flies toward 124° at 525 km/h. What is the component of the plane's velocity (a) toward 90°? km/h (b) toward 180°? km/h

    asked by Eddie
  114. 5th grade math

    Pete looked at the colors of the shoes worn by his classmates. He found that 1/5 of the class wore white shoes, 3/20 wore blue shoes, 2/5 wore black shoes, and 1/4 wore red shoes. what color shoes did the most students have on? And how would i show the

    asked by Nicole
  115. English

    I urgently need to know if the following questions are correct? As they refer to Macbeth's plot, do you think I should use the simple present? 1)What is (was) Lady Macbeth’s plan? 2)Who is (was) the real Macbeth? 3)Who is blamed for Duncan’s death in

    asked by Henry2
  116. physics

    At what temperature is the density of water MAXIMUM ? Why does water have a maximum density ( Other liquids do not)

    asked by anil
  117. physics

    In the equation y squaared minus 1/4 g squared t cubed, y is the displacement, t is the time, and g is the gravitational acceleration. The right hand side of the equation has units of?

    asked by Amanda
  118. Prob and Stats

    If X is a random variable with distribution X~N(350,110) find (a)P(X

    asked by Kathryn
  119. physics

    A 29 kg child, with a 4.5 kg backpack on his back, first stands on a sidewalk and then jumps up into the air. Find the magnitude and direction of the force on the sidewalk from the child when the child is (a) standing still and (b) in the air. Now find the

    asked by ayla
  120. Physics HELP

    A student has six textbooks, each with a thickness of 4.0 cm and a weight of 30 N. What is the minimum work the student would have to do to place all the books in a single vertical stack, starting with all the books on the surface of the table?

    asked by Kels
  121. chemistry

    What mass in grams of an aqueous hydrochloric acid solution that is 37.0% by mass hydrogen chloride is needed to supply 2.000 moles of hydrogen chloride?

    asked by Li
  122. Physics

    You find it takes 230 N of horizontal force to move an unloaded pickup truck along a level road at a speed of 2.4 m/s. You then load up the pickup and pump up its tires so that its total weight increases by 42% while the coefficient of rolling friction

    asked by Kyle
  123. 11 Anthropology

    Repression: banishing the _______:banishing old, bad memories, or even current things. Regression: Moving _______ to an earlier stage Displacement: Moving an _____ from one object (target) to another can someone help me fill in the blanks?

    asked by Rebecca
  124. Math word problem(algebra)

    Diana buys 20 apples at x cents each&40 oranges&sells the bags for 20x cents each.Find out the amount that Diana paid for each apple if she obtained a total of RM 24 from selling all the fruits

    asked by kimi
  125. physics

    cannon is on top of the hill which is 60 meters from the ground. A cannonball is being blast with an initial velocity of 25 meters per seconds. What the maximum height it can reach?

    asked by Anonymous
  126. chemistry

    Will a precipitate form when an aqueous solution of (NH4)4CO3 is mixed with Fe(NO3)3

    asked by Anonymous
  127. General

    Is there anyone on here that has been part of the Pennfoster program? I need advice

    asked by anonymous
  128. English

    The horse ran down the hill and through the meadow. Is this correct?

    asked by HM
  129. English

    Whenever I hear the opening measure of Beethoven's Fifth Symphony I get goose bumps. I think this is incorrect. Is it ?

    asked by HM
  130. Identify Topic Sentence

    Read each of the following paragraph and underline the topic sentence. Many plant foods naturally contains toxins in small amounts, so through they're generally safe to eat, consuming them in very large amounts could be harmful. Potatoes that have been

    asked by ME
  131. MBA – I/ Semester – I math

    Differentiate following with respect to x. (3x2 – 5ax + a2)4

    asked by anil
  132. HCA

    Is this the proper order for Alphabetic filing? Norman Bailey-Jones o Norman Bailey Jones o Robert D’Angelo o Robert D. Angelo o Robert DeAngelo o Judith delaCroix o Judith Dela Croix o Franklin M. Haney o Franklin Mac Haney, Jr. o Franklin MacHaney, Jr.

    asked by jim
  133. Calculus--Reiny

    V = Radical The expression: V2(V5-12V3)-V3(V8-2V30) can be written in simplest form aVb-cVd, where a, b, c ,d are all positive integers. The value of a + b + c + d is ________. So after solving all this out, I arrived at 7V10 - 14V6. That - is beside the

    asked by -Untamed-
  134. Chemistry

    A solution of sodium hydroxide is standard- ized against potassium hydrogen phthalate (KHP, formula weight 204.2 g/mol). From the following data, calculate the molarity of the NaOH solution: mass of KHP 1.654 g; buret reading before titration 0.23 mL;

    asked by Broy
  135. Math

    The smallest real number in the solution set of 2x > 6 is 4. A) True B) False - The smallest real number in the solution set of 2x > 6 is 3. C) False - The smallest real number in the solution set of 2x > 6 is a number greater than 3. For example, 3.01 is

    asked by Mary
  136. Biology

    how many mL of concentrated (15 M) hydrochloric acid (HCL) are required to prepare 500 mL of 6 M hydrochloric acid?

    asked by Neika
  137. HISTORY

    In the development of the Roman Empire, the Romans treated citizenship as A. meaningless because the Roman Empire was tyrannical. B. something to be shared with conquered people. C. belonging only to native Romans. D. a benefit worthy only of peoples who

    asked by katelynn(pennfoster student)
  138. 5th Grade Math

    Eduardo and his friends niked 7/4 miles. What mied number shows the distance they hiked?

    asked by Nicole
  139. To Reiny

    Reiny could you please check my Calculus post below, it says Calculus--Reiny.

    asked by -Untamed-
  140. Physics

    A stone is thrown horizontally at 30.0m/s from the top of a very tall cliff. Calculate its horizontal position and vertical position at 2s intervals for the first 10.0 s.

    asked by Ruth
  141. MBA – I/ Semester – I math

    Differentiate following with respect to x f(x) = (3x^2 – 5ax + a^2)^4

    asked by anil
  142. Calculus

    If f(x)=[x−1/(1+5 x)], there are two points on the graph of y=f(x) at which the tangent lines are parallel to the line x−2y=2. Type in the x values of these points. Type the smaller number first, then the larger number.

    asked by Jack
  143. COMPUTERS-EXCEL 2007

    which one of the following formulas accurately describes the meaning of this formula: (A5*B5)+10 A)add 10 to B5 and multiply the resulting value by A5 B)multiply A5 bY B5,then add 10 to the resulting value C)divide B5 into A5,then add 10 to the result D)

    asked by vedrana
  144. 5th Grade Math

    I just wanted to Thank you Ms. Sue for the help my son is in 5th grade and some of his homework i don't understand, and i don't want him to turn it in wrong. So if i have more of an understanding then i can help him more with his homework so he gets a

    asked by Nicole
  145. chemistry

    What is the specific heat capacity of a metal if it requires 176.1 J to change the temperature of 15.0 g of the metal from 25.00°C to 30.00°C?

    asked by j
  146. Pre Algebra

    use the discriminant to determine whether the following equations have solutions that are: tow different rational solutions; two different irrational solutions; exactly one rational solution; or two different imaginary solutions. 25x^2=10x-1

    asked by dianne
  147. physics

    A stone falls from a cliff. It lands on the ground below the cliff after 4.2 seconds. The height of the cliff can be calculated to be what?

    asked by Amanda
  148. statistics

    in a sample of 1000 people ,113 are left handed.the results of the sample are shown in the table.find the probability that a randomly selected person is a left handed,given that she is a woman.

    asked by ron
  149. science

    what is a machine?

    asked by sara
  150. English

    Shall I use the simple past only for the following two questions (which refer to history)? I included other doubts. Thank you. 1) Who were the King's Men? 2) Who was the real Macbeth. 3)What does Malcolm tell his soldiers to do when the army reaches (or

    asked by Henry2
  151. Algebra

    The larger of two numbers is 23. if three times the number is 5 more than eight times the smaller, find the smaller number.

    asked by Jessica
  152. Physics

    Question Part Points Submissions Used A 45.0-kg girl is standing on a 160-kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of

    asked by Allie
  153. 5th Grade MATH!

    in Which set is 2/3 of the numbers composite? a. 21,29,15,9,27,30 b.18,5,19,33,23,20 c.10,28,21,35,19,11 d.34,12,16,32,22,8

    asked by Anonymous
  154. chemical experiment

    If a 200-mm test tube is substituted for the gas buret in a Aluminum Analysis experiment ( collect H2 from the sample ,and measure its pressure and volume , then, find out its number of moles and Aluminum's percent in the sample) ,indicate the additional

    asked by lamis
  155. english

    five litrary terms

    asked by akinlo
  156. physics

    A box of box is at rest on the floor. Identify the forces acting on the box by drawing a free-body diagram.

    asked by yvone.
  157. pre algebra

    the ratio of boys to girls in an art class is 3.5. there are 12 boys in the class. how many girls are in the class?

    asked by jeffrey
  158. Statistics

    If someone gives you a sample mean and a standard deviation, you can find a confidence interval. But what if someone gives you the confidence interval instead and asks you to find the sample mean? How can you do that? Here's an example: a 95% confidence

    asked by Hope
  159. Chemistry

    How many number of ions of each type are present in the following aqueous solution? 113 mL of .490 M aluminum chloride.

    asked by Chris
  160. math

    if Charlie earns 3/4 of what joan earns. and together they earn 490.00 a week. How much does charlie make?

    asked by gilbert
  161. Algebra 2 (Linear Programming)

    The Carbon coal company has 2 mines, a surface mine ad a deep mine. it costs $200 per day to operate the surface mine and $250 to operate the deep mine. Each mine produces a medium grade and a medium-hard grade coal, but in different proportions. This

    asked by Peter
  162. Econ

    The nominal interest rate is 12 percent per year in Canada and 8 percent per year in the United States. Suppose that the real interest rates are equalized in the two countries and that purchasing-power parity holds. A friend proposes a get-rich-quick

    asked by Anonymous
  163. Physics

    When a block is placed on top of a vertical spring, the spring compresses 4.40 cm. Find the mass of the block, given that the force constant of the spring is 1600 N/m.

    asked by Bernie
  164. chemistry

    In sugar production, a process involves seeding of a supersaturated solution (sugar as solute) by adding 'ground sugar with few amounts of isopropyl alcohol'. My question is, why must the ground sugar be wetted with isopropyl alcohol? thanks in advance.

    asked by Namie
  165. Chemistry

    Write the correct symbol in standard form for the isotope of platinum that contains 118 neutrons.

    asked by Haile
  166. geometry

    Given a line l, let A be a point on l, and B another point not on l. a. prove all the points of the line segment AB, except for A lie on the same side as B.

    asked by Ashley
  167. Science

    1. What are the impacts of Electromagnetic treatments? 2. Name one biotechnology and its impact on society.

    asked by Crissy XD
  168. calculus

    Find the points on the curve y=(cosx)/(2+sinx) at which the tangent is horizontal.

    asked by bob
  169. Math

    find the equation to the tangent to the curve y = (4x + 3)^5 at the point (-0.5, 1), giving your answer in the form y = mx + c

    asked by Rory
  170. Math

    Wat is 34*(n*2)=680

    asked by Shena
  171. calculus

    Find ther derivative of the functions. a. f(x)=(4x-x^2)^100 b. f(x)=(1+2x+x^3)^1/4

    asked by Anonymous
  172. History

    I need to think of some political, social, and economic issues of the late 19th century. I'm a little confused because some things can go in more than one category, like Labor laws could be all 3, right? Would women's and blacks right to vote be political

    asked by Em
  173. 6th grade english

    I'm helping out my sister with her english homework and I am confused on what to do. Underline the independent clauses once and the dependent clauses twice. Circle the phrases. Our football team is proud because the team is undefeated. The part that i

    asked by David
  174. chemistry

    Will a precipitate form when an aqueous solution of (NH4)4CO3 is mixed with Fe(NO3)3

    asked by Anonymous
  175. Algebra

    Produce a third degree polynomial that has exactly the roots -3 and 5 with y-intercept 1350. I understand I could start with (x+3)(x-5)^2, but i don't know how to get the y-intercept 1350 with the same conditions. Please help. thank you.

    asked by Nilan
  176. English

    Steve refused to write a term paper; therefore, he failed the course. Is this incorrect?

    asked by HM
  177. Understanding Paragraphs

    Read each of the following paragraph and underline the topic sentence. Many people assume that the law is based on the consent of citizens, that is treats citizens equally, and that it serves the best interest of society. If we simply read the U.S

    asked by ME
  178. Understanding Paragraphs

    Read each of the following paragraph and underline the topic sentence. Although color is generally the most conspicuous characteristic of a mineral, it is considered a diagnostic property of only a few minerals. Slight impurities in the common mineral

    asked by ME
  179. Physics 1

    A mass of 5 kg lies on a frictionless, horizontal floor. A force of 135 Newtons is applied to the mass at an angle above the positive x axis and a force of 14 Newtons is applied to the mass at an angle of 22.8 degrees below the negative x direction (see

    asked by J
  180. psychology

    In Pavlov's classical conditioning experiments, the neutral stimulus that comes to elicit a conditioned reponse is known as the: A) unconditioned stimulus B) conditioned stimulus C) reinforced stimulus D) unreinforced stimulus I believe the answer is A or

    asked by Tisha
  181. College Chemistry

    Calculate the concentrations of the following solutions, assuming the volumes are exact measurements: a. 18.64g of sodium hydroxide in 350mL of solution b. 8.97mL of 18M hydrochloric acid in 250mL of solution

    asked by Bekah
  182. Statistics, Finance

    If the distribution of returns for an asset has a variance of zero, then covariance of returns between that asset and the returns any other asset must equal zero. True or False

    asked by John
  183. Math

    The revenue R from selling x number of phone widgets is given by , and the cost C of producing those widgets is given by . Find the number of widget it requires to break even.

    asked by Liz
  184. Mathematics

    Calculate the side of the square base.if the diagonal of the base of a square prism is 8,49 cm and the height is 12 cm

    asked by Nomvuyiso
  185. home economics

    10 careers that home economist can do.

    asked by Olawepo
  186. Economics

    The nominal interest rate is 12 percent per year in Canada and 8 percent per year in the United States. Suppose that the real interest rates are equalized in the two countries and that purchasing-power parity holds. A friend proposes a get-rich-quick

    asked by Anonymous
  187. math ASAP

    please explain how to use doubles plus 1 and doubles minus 1

    asked by eduardo
  188. College Algebra

    Which of the following is equivalent to (2x-3)^2=25 ? A) 2x - 3 = 5 B) 2x - 3 = -5 C) 2x - 3 = 5 and 2x - 3 = -5

    asked by Nolan
  189. statistics

    Suppose that the population standard deviation (ó) for a normally distributed standardized achievement test (ACT) is 6. What would the standard error of the sample mean (óxbar) be if we were to draw a random sample of 36 test scores?

    asked by Anonymous
  190. physics

    A 30 kg child steps to a dock from a 60 kg boat,giving the boat an acceleration of 2m/s^2. Neglecting water Resistance, the acceleration experienced by the child is?

    asked by Brittney
  191. 5th Grade Math

    Brad filled in 24 out of 40 words on a crossword puzzle. Stewart filled in 15 out of 25 words on a different crossword puzzle. Which correctly compares the fractions of the puzzles that Brad and Stewart completed. a)2/3>3/5 b)3/53/5 d)3/5=3/5

    asked by Nicole
  192. mathematics

    the london eye in england is the biggest big wheel in the world. It rotates with people on it so that they can get a view of the city of london from high up.there are 32 cabins attached

    asked by nellicia
  193. physics

    Name Two solid materials having very low linear expansivity ?

    asked by anil
  194. physics

    At what temperature is the density of water MAXIMUM ? Why does water have a maximum density ( Other liquids do not)

    asked by anil
  195. Mathematics

    6+m/3=18 What does m equal.

    asked by Thomas
  196. chemistry

    what would the equation be for: heating of iron III hydroxide crystals --> iron III oxide + water vapor

    asked by Kitsune
  197. physics

    a cannonball is fired straight up at 60m/s. how long does the flight last?

    asked by Maggie
  198. Math

    AAA Company currently sells radios for $ 80 less 25 % . Their competitors are now selling the same product for $ 48 . AAA must offer an additional discount of _____ in order to meet their competitor's price. A single discount of _____ will give the same

    asked by Anonymous
  199. Government US

    15. What happened in 1998? b. The U.S. government had its largest budget deficit in history. c. The national debt was eliminated. d. The U.S. government shut down on three occasions. e. The U.S. government had a balanced budget. i eliminated all the wrong

    asked by HM
  200. Algebra 2

    42x^2-69x+20=7x^2-8

    asked by Swaggg
  201. MATH PLEASE HELP

    a) How much will the monthly payment on a five yr car loan that changes 8.1% interest (compounded monthly) if the amount borrowed is $12,000? b) How much total interest will be paid over the life of the loan for A i think it's 300?

    asked by MathHelp
  202. 5th Grade Math

    Kate baked 3 pies for a family reunion. She cut each pie into 8 slices. the family ate 2/3 of the pies. How many slices of pie were eaten? And how would i show it if i had to show the pies?

    asked by Nicole
  203. physics

    Name Two solid materials having very low linear expansivity ?

    asked by anil
  204. Mechanics

    When a problem is statically indeterminate, what additional equations do you need to solve?

    asked by Jessica
  205. alan b shepard

    If charles wants the area of the trapezoid to be 65 square feet, what should be the measure of the second base?

    asked by yasmine sonora
  206. calculation

    Figure 1 represents the first 6 inches of a standard scale, or ruler. What is the distance represented between the lines indicated by the number 1 arrow?

    asked by Anonymous
  207. early childhood education

    1)People who understand the characteritics of children at various ages are more likely to develop activities and experiences for them that are a)developmentally appropriate b)within time constraints c)educational d)easy to do my answer is c 2)which of the

    asked by eustace
  208. college physics

    Human skin (choose all that apply) 1. emits radiation well. 2. absorbs radiation well. 3. does not emit radiation well. 4. does not absorb radiation well. 5. has an emissivity of 0.

    asked by ice cream
  209. English

    Could you please check these last sentence? 1) I believe people shouldn't be discriminated against just because of the colour of their skin. 2) In my opinion, we should all be treated as equal and should be given the same opportunities in life. 3) We

    asked by Henry2
  210. American government

    Outside lobbying does not include the use of: a. Campaign contributions to legislators who favor the interest group. b. Face to face exchanges between lobbyist and policymakers. c. Targeting group resources on key election races. d. The news media to

    asked by Casey
  211. English

    Could you check the following sentences on indirect speech, too? Thank you. By the way, how do you pronounce "Keruac", the surname of the famous American writer? 1)He invited me to go for a walk. 2)One of the guests apologized for breaking the vase. 3)He

    asked by Henry2
  212. chemistry

    3 moles each H 2 and I 2 are introduced into 1 lit box at temperature of 490'c. find concentration of H 2 in box at equilibrium is established?

    asked by Anonymous
  213. Algebra 2 (Linear Programming)

    A bicycle builder makes two models. The basic model requires 2 hours of frame construction, 4 hours of assembly, and 1 hour of finishing. The deluxe model requires 3 hours of frame construction, 3 hours of assembly, and 2 hours of finishing. Each day 36

    asked by Peter
  214. American Government

    The Federal Reserve System b. is run by a congressional committee. c. regulates only national banks. e. None of these answers is correct. I would say C..

    asked by HM
  215. math

    what is 33% of 61

    asked by robert
  216. Math

    How can I change 9 2/11 and 1 7/15 into improper fractions?

    asked by Anonymous
  217. critical thinking please help

    True or false: It is the case that if an argument is inductively correct then the conclusion is factually correct as well

    asked by allie
  218. physics

    Two children on racing bikes start from the same reference point. Child A travels 5.0m/s{right} and child B travels 4.5m/s{right}. How much farther from the point of origin is child A than child B after 5.os? pls I really really need help. I do not

    asked by ted
  219. math

    A person takes out a monthly installment loan of $2000 with an annual percentage rate of 13.0% if the person can afford no more than $70 per month, then which of the following terms are feasible? a) 8 months b ) 12 months c) 18 months d) 24 months e) 36

    asked by MathHelp
  220. Math word problem

    if the sum of three consecutive numbers is 72,what is tge largest number?

    asked by kimi
  221. Math word problem

    The length&breadth of a rectangle are (x+5)cm&3cm respectively.Find the length if the area of the rectangle is 42 cm2.

    asked by kimi
  222. Math

    What is the opening direction of the parabola x = –2y2. A.left B.right C.up D.down

    asked by Alexis
  223. mba

    Differentiate following with respect to x. (3x2 – 5ax + a2)4

    asked by anil
  224. social studies

    how do i get ahold of Ms. Sue?

    asked by anonymous
  225. chemistry

    What is the pH of a solution prpared by mixing 50.0 ml of .200 M HCLO4 with 10.0 ml of .100 M KOH

    asked by Anonymous
  226. Understanding Paragraphs

    Read each of the following paragraph and underline the topic sentence. Although color is generally the most conspicuous characteristic of a mineral, it is considered a diagnostic property of only a few minerals. Slight impurities in the common mineral

    asked by ME
  227. Physics

    A 2.4 kg object attached to a horizontal string moves with constant speed in a circle of radius R on a frictionless horizontal surface. The kinetic energy of the object is 95 J and the tension in the string is 315 N. Find R.

    asked by Allie
  228. social studies

    Tim is extremely anxious about a merger his company has in the works with a larger corporation. Over the next few weeks, he becomes more high-strung and demanding at work. His secretary and other subordinates grow anxious, although they know nothing about

    asked by missy
  229. chemistry

    .850L of .410M of H2SO4 is mixed with .800L of .200M of KOH. what is the concentration of sulfuric acid

    asked by cox
  230. English please help!!!!!

    In the book The Pearl By John Steinbeck. The rich and powerful usually dominate the poor and uneducated. In the book who was rich?who did they dominate? Please give me alot of information

    asked by karan
  231. Finance

    How much is a 9 month CD worth that started out at $1,000.00 at 4.40% worth after 15 years

    asked by MJ
  232. social studies

    Dante is given his first kitten. While holding it and feeling how soft her fur is, he puts her up to his face. In a playful gesture, the kitten taps his face with her paw and her nails scratch Dante's nose. Frightened, he drops the kitten. His decision to

    asked by missy
  233. Finance - Required Return from a Beta

    Hi, I need to learn how to explain and solve the following Finance problem. I don't understand this at all!!!, please show all solutions... Calculate the required return on an asset that has a beta of 1.25, when the expected return on the market portfolio

    asked by Dantes
  234. Math

    What is the answer to 7d+5=26, and 4t+1=25, 6r-3=15. Thanks! (missing letter)

    asked by Candy Corn 
  235. Chemistry

    A .1360 g sample of a mixture of magnesium and calcium carbonates when treated with HCL evolves 32.25 cm cubed of carbon dioxed measured dry at STP. Calculate the percent of magnesium carbonate in the mixutre.

    asked by Rachel
  236. calculus - limits

    Does the limit lim 2011t/3-(squareroot)t+9 exist ? t-0

    asked by Whitney
  237. science

    The lanthanide metal europium (Eu) forms a crystalline solid with a cubic unit cell of edge length 3.854 Å. The density of europium is 4.408 g cm-3. The crystal structure of solid europium is a. body-centered cubic b. simple cubic c. face-centered cubic

    asked by ice cream
  238. chemistry -- help

    In sugar production, a process involves seeding of a supersaturated solution (sugar as solute) by adding 'ground sugar with few amounts of isopropyl alcohol'. My question is, why must the ground sugar be wetted with isopropyl alcohol? thanks in advance.

    asked by Namie
  239. statistics

    (Blood Test Problem) Suppose 100 people are waiting for blood test for a kind of disease. The probability that for one person the test result is positive equals 0.1. Two test methods are as follows: Method 1: Test one by one. Then we have to do 100 tests.

    asked by Anonymous
  240. algebra

    There are 50 questions to answer in a triva contest. Each player starts with 100 points. He or she earns ten points for each correct answer but will lose four points for each incorrect answer. Each player must answer all 50 questions. What is the fewest

    asked by Anonymous
  241. arithmetic

    Cheri's time in the bobsled race was 1 min, 38.29 sec. What is the word form and the value of the 9 in Cheri's time?

    asked by reena
  242. business entr 101

    gig started giganeers to earn a profit but by working hard and increasing his market shares , he was able to create jobs for others. this is an example of ________ concept.

    asked by james
  243. physics

    liquids in general expand on heating but when water in an ordinary glass flask with a narrow neck is heated the level is found to first fall and then rise. why?

    asked by anil
  244. Math

    Find b such that (8x+1/b)-2=x has a solution set given by {3}. b =

    asked by Abby
  245. English

    What do you thing of an exercise on reporting verbs like the one that follows? I'm postin you just some examples. Put the following into the indirect speech using a suitable reporting verb. 1) "You took my money", he told Emma. 2) "I think you should do

    asked by Henry2
  246. physics

    A liquid expands on heating. Explain briefly how its density will change with rise in temperature

    asked by anil
  247. math

    12r-4r=48

    asked by Anonymous
  248. Math

    Which is generally a better credit term? (a) 2 / 20 (b) 1 / 20 (c) 2 / 10 (d) 3 / 10 (e) 1 / 10 I am thinking its either b or e cause its 1 outta something and the others are 2 or 3 outta something so im not for sure how to figure out which is generally a

    asked by Anonymous
  249. english

    in the following sentence where should the comma's go.. By late fall the hours of sunlight have begun to dwindle as the shortest day of the year known as winter solstice approaches.

    asked by Anonymous
  250. Physics

    Show that there is no Brewster’s angle for s polarization.

    asked by Bob
  251. physics

    How do we compensate for thermal expansion /contraction in the construction of railway tracks?

    asked by anil
  252. physics

    Describe briefly how the volume of a given mass of water changes when it is cooled from 7 ^0 C to 1^0 C use the terms increase, decrease and maximum or minimum

    asked by anil
  253. physics

    What happens to the size of a hole in a metal plate when the plate is heated / cooled

    asked by anil
  254. Socials

    If I were to write an essay on the economic problems of developing countries, what should I write about? Please help. thanks.

    asked by John
  255. Government US

    13. Supply-side economics, during President Reagan’s administration, involved a. the supply component of the supply-demand equation. b. stressing the importance of tax cuts for businesses. c. stressing the importance of tax cuts for the wealthy. d. an

    asked by HM
  256. Math

    2(6-4d)= 25-9d plz show step by step

    asked by kelly
  257. Math

    regroup 2 tens, 2 ones; 1 ten, 12 ones Name the word that describes what was done to show the number in different ways.

    asked by ashley
  258. math

    what is solving mean

    asked by memeh
  259. math

    edward took a survey and found that 3 out of every 5 students in his class walk to school. if there are 25 students in his class, how many students can be expected to walk to school?

    asked by queisha
  260. Health

    2. This type of medicine increases alertness and is often used for people who suffer from ADHD. a. hormone b. antibiotic c. stimulant d. antacid C? 4. ______ are available over-the counter. a. Analgesics and antibiotics b. Hormones and stimulants c.

    asked by mysterychicken
  261. math

    A customer is buying a $100 drill and two $15 drill bit sets. The customer uses a gift card worth $50 to pay for a portion of their bill. How much cash will the customer pay (before taxes)?

    asked by Anonymous
  262. math

    How is dividing a decimal by a whole number the same as dividing a whole number by a whole number? How is it different?

    asked by stephanie
  263. Math 117

    write a challenging expression using exponents and scientific notation and then solve it for us.

    asked by Katie A
  264. Conceptual Physics

    you push a ton vehicle on level pavement with force of 250 N what is the vehicle's acceleration

    asked by Anonymous
  265. Calculus STUCK

    Dont know if the radicals will show up.. 2ã3(ã243-2)-ã2(5+7ã2) Can be expanded and simplified to the form p + qã2 + rã3. the value of p + q + r is_____ First I simplified the V243 and I got 9V3 2V3(9V3-2)-V2(5+7V2) 18V9-4V3-5V2-7V2

    asked by -Untamed-
  266. physics

    liquids in general expand on heating but when water in an ordinary glass flask with a narrow neck is heated the level is found to first fall and then rise why ?

    asked by anil
  267. physics

    A liquid expands on heating. Explain briefly how its density will change with rise in temperature

    asked by anil
  268. statistics

    If a large number of people guess randomly on each of 100 items on a true-false test, the mean would be expected to be ì=___*, and ó=__*. • What % of the examinees would be expected to get a score of 65 or >?

    asked by Kathryn
  269. physics

    Describe briefly how the volume of a given mass of water changes when it is cooled from 7 ^0 C to 1^0 C use the terms increase, decrease and maximum or minimum

    asked by anil
  270. English

    I'm including the questions to the answers. Thank you. 1)Her plan was to drug the soldiers guarding the king and then blame them for the king’s murder. 2)The real Macbeth was King Duncan’s general. He killed him in 1040 and ruled until 1057 when he was

    asked by Henry2
  271. physics

    What happens to the size of a hole in a metal plate when the plate is heated / cooled

    asked by anil
  272. Chemistry

    Factors that would affect re-crystallization? *Temperature *Heating Rate *Pressure *Dust or hair that causes nucleation * Time (slow cooling) This is what I have, are there anymore? Thank you

    asked by Jessie
  273. Government

    The principle of self-government emphasizes majority rule, whereas the principle of liberty emphasizes individual rights. These principles: a. Are universal and the foundation of all legitimate governments. b. Have no real meaning in practice. c. Are not

    asked by Tonya
  274. english

    I need to identify the adjective and adverb clause in this sentence. Humans aren't the only ones who have family trees?

    asked by cayden
  275. algebra

    what is (5x^2-4)+(-3x^2-9)? thanks

    asked by Dani
  276. Physics

    A motorist travelling at 107 km/hr is being chased by a police car at 133 km/hr. If the police car starts from 3.0 km back, how long does it take to catch the motorist? Leave time in hours

    asked by Jessica
  277. Government

    All civil liberties are: a. So specific in nature that the courts have no difficulty determining how to interpret them. b. Conditional no right is absolute in practice because a right can conflict with each other rights and societys other other legitimate

    asked by Tonya
  278. math

    decompose 68 with using exponents

    asked by amy
  279. US History

    Can you please help me with these questions? After the Revolution, _______________ colonists left the states for other parts of the British Empire. George Washington’s forces were not permanently defeated by the British in the Battle for New York because

    asked by Sheree
  280. calculus

    express u(t)=Tant/1+Tant in F of G

    asked by Kevin
  281. Math

    12r-4r=48 What is r?

    asked by Chris
  282. Economics

    The nominal interest rate is 12 percent per year in Canada and 8 percent per year in the United States. Suppose that the real interest rates are equalized in the two countries and that purchasing-power parity holds. What can you infer about expected change

    asked by Anonymous
  283. Social Studies

    What are some geographic features of the western states (California, Nevada, Oregon and Washington) besides mountains and valleys?

    asked by Joey
  284. physics

    If you are sitting at home in your room, the walls please help me pick one best answer of the followings. 1. emit visible light with a peak wavelength close to 0.5 micrometer. 2. emit thermal radiation in the near infrared with a peak wavelength close to 1

    asked by ice cream
  285. Pre-Calculus

    How do you solve this quadratic function? f(x) = −x2 + 10x

    asked by Amie
  286. physics

    Human skin (choose all that apply) 1. emits radiation well. 2. absorbs radiation well. 3. does not emit radiation well. 4. does not absorb radiation well. 5. has an emissivity of 0.

    asked by ice cream
  287. college physics

    If you are sitting at home in your room, the walls 1. emit visible light with a peak wavelength close to 0.5 micrometer. 2. emit thermal radiation in the near infrared with a peak wavelength close to 1 micrometer. 3. emit thermal radiation in the

    asked by ice cream
  288. english

    But consumers there showed little interest in sewing machines. prepostional phrase but consumers, but prepostion &consumer object? in sewing machines, in preposition and machines is the object? would that be correct?? thanks

    asked by jill
  289. College Algebra

    (2.2 x 10^-3)(4.3 x 10^8) I get 9.46*10^5 is this correct?

    asked by Katie A
  290. algebra

    I do not understand how to solve this problem. 7 - 1/4 (j-8) =6

    asked by johnnie
  291. math

    I cannot figure out how to solve this problem. 1/3 (x + 9) + 5 = x/3 + 8

    asked by stephanie
  292. math

    Help. I cannot solve this problem.\ 3(a+4)/9 = 2a - 12

    asked by randy
  293. algebra

    Having a problem with solving this problem. 1 + 1/6p = 2(p + 5)

    asked by maurice
  294. math:solving for an exponent.

    I can't get the right answer, where am I going wrong? 7.0x10^9= (6.7x10^9)(2.72^r*3) 1.04 = 2.72^r*3 When I solve for this, I get ln (1.40) = 0.03922 then 0.03922 / 3 = 0.0130 So my r equals 0.0130 BUT the teacher says the answer is 0.05 = r *3 0.02 = r

    asked by Sar
  295. Political views of Osvaldo Dragún

    Was Osvaldo Dragún the author of "Historia del hombre que se convirtió en perro" a Peronist or was he against Peron?

    asked by Cassie
  296. Calculus--Reiny

    Im also doing this problem wrong... 2^3V4(2^3V54-^3Vx) is equal to 16, then x is equal to... I simplified the 2^3V4 and got 64, and just got stuck.

    asked by -Untamed-
  297. Calculus

    5-3ã2 multiplied by its conjugate is... Its supposed to be 7, but I don't get how to do this, cause now im totally confused, i thought that the conjugate came when you were to rationalize a denominator... I did this... 15ã2-9ã4 15ã2-18

    asked by -Untamed-
  298. 11Anthropology

    what was the connection between Louis Leakey and Dian Fossey and how did their goals become common?

    asked by Rebecca
  299. math elementary

    add. write the doubles fact used to solve each one. 0+1=1 6+7 =13 4+3=7 please explain how to use doubles plus 1 and doubles minus 1

    asked by eduardo
  300. English

    Are these two sentences possible? Thank you. I had my bedroom wallpapered and my child's bedroom whitewashed.

    asked by Henry2
  301. Chemistry

    How much energy (in kcal) is needed to convert 53.2 g of water at 55.0 C to steam at 100.0 C

    asked by Martha
  302. physics

    an 80 kg boy holding on to a helium balloon jumps off of a 20m tall building and floats to the ground. If the boant force of the balloon is 750 N upward, what is the boy's acceleration and final velocity just before he touches the ground?

    asked by zahid
  303. english grammar. please help me

    please help me to correct my resignation letter in correct format and grammar. thank you Dear Sir, I would like to inform you that I am resigning from my job effective on Oct.28, 2011 and it is extremely urgent I request to leave on Oct.30, 2011. So I hope

    asked by jessie
  304. chemistry

    How many grams of potassium permangate are needed to decolorized 1g of 2-pentene in basic solution

    asked by john
  305. Maths

    *I'm a bit confused with this qn* Expand and Simplify 3(3x-y)^2

    asked by Gilda
  306. Math

    What is the sum of 2 7/9 + 8/9?

    asked by Arlene
  307. Simple Subjects

    What is the complete subject and simple subject for the sentence "Many stories about the first Valentines ay exist

    asked by Michael
  308. science

    The sun shines down on a mirror. The angle between the incident rays of sunlight and the vertical is 60o. What is the angle between the reflected rays and the vertical? I think the answer is 60 am i correct

    asked by Allison
  309. Understanding Paragraphs

    Read each of the following paragraph and underline the topic sentence. First, language consists of a large number of symbols. The symbols that make up a language are commonly referred to as words. They are the labels that we have assigned to the mental

    asked by ME
  310. Government US

    Advocates of deregulation are primarily concerned with a. efficiency. c. externalities. e. political expediency. I would say E?

    asked by HM
  311. chem

    need help with the following conversion Calculate the mass in pounds of one gallon of water given that the density of water is .0 g/ml

    asked by paula
  312. Calculus

    Find the Domain of f(x)=sqrt(x^3-4x+1)

    asked by Amy
  313. Business

    The purpose of the General Agreement on Tariffs and Trade (GATT) is to

    asked by Tara
  314. Science

    What is the state/phase of sodium at 24 degrees celsius?

    asked by Austin
  315. math ASAP

    add. write the doubles fact used to solve each one. 0+1=1 6+7 =13 4+3=7 please explain how to use doubles plus 1 and doubles minus 1

    asked by EDUARDO
  316. Language Arts

    In the sentence ...The letter listed gifts for the wedding. Would listed be a physical action verb or a mental action verb?

    asked by Brandi
  317. SOMEBODY HELP ME WITH MATH!!!!!!

    A person wishes to borrow $20,000 and has the following options. One lending source offers the loan for 24 monthly payments at an annual percentage rate of 14%. The second source offers the loan for 18 monthly payments at an annual percentage rate of 16%

    asked by MathHelp
  318. English-Commas.

    This sentence is so confusing. For the life of me I couldn't find the thermos. Is it incorrect or correct?

    asked by HM
  319. h

    1. John has a book that measures 25cm x 30cm x 50cm and has a mass of 70g. What is the density?

    asked by hug
  320. Finance

    Calculating Beta... Hi I need help... I need to calculate Beta and Here is what is given. Please if you can explain how... Here's the given X's StdDev of monthly return = 12% with a 0.80 market correlation. The StdDev of Market monthly return is 6%

    asked by Dantes
  321. Chemistry

    How many milliliters of a 0.66 M HCl solution are needed to react completely with 1.9 g of zinc to form zinc(II) chloride?

    asked by Anon
  322. Physics

    How many minutes are there in 1 century?

    asked by Titus Ninwillay
  323. Physics 1

    A mass of 5.2 kg lies at the top of a frictionless incline. It is inclined at an angle such that the normal force on the mass is 29 Newtons. If the length of the incline is 78 meters and the mass is originally at rest at the top of the incline and then

    asked by J
  324. trig

    what is the hietgh difference between 2 walls 6 metres apart to get a 17.5 degree pitch

    asked by Anonymous
  325. Math

    The smallest real number in the solution set of 2x > 6 is 4. A) True B) False - The smallest real number in the solution set of 2x > 6 is 3. C) False - The smallest real number in the solution set of 2x > 6 is a number greater than 3. For example, 3.01 is

    asked by Michelle
  326. 4th grade Math

    Miguel would like to figure out how many blocks he would need to build the 25th dragon without actually building it. He knows that there is a pattern to his hexagon dragons. Can you write a rule in words or a math expression that Miguel can use to figure

    asked by minhtrang
  327. chemistry

    The mass percentage of chloride ion in a 29.00 sample of seawater was determined by titrating the sample with silver nitrate, precipitating silver chloride. It took 42.42 of 0.2998 silver nitrate solution to reach the equivalence point in the titration.

    asked by Cecelia
  328. physics

    a rectangular barge with a flat bottom, has an area at the bottom of 4m squared. the weight of the barge plus its cargo is 5,000 newtons. what is the mass of the barge + cargo in kilograms?

    asked by amanda
  329. Math

    you want to buy a newly released CD . the CD costs $17. plus 6percent tax. write an expression that represents how much money in dollars you need to buy the CD . evaluate the expression

    asked by Sage
  330. base-ten blocks

    think of Marie's model. for what could you trade one of the hundreds?

    asked by amor
  331. Language Arts

    In the sentence....The letter listed gifts for the wedding. Would listed be a physical action verb or a mental action verb?

    asked by Brandi
  332. social studies

    Adonis went to the Industrial Psychologist's office all confused and upset. Apparently, his new supervisor told him to stop making the peace sign in a sideways motion, saying it looked like a gang-related gesture. Most likely, the psychologist advised the

    asked by missy
  333. Math

    regroup 2 tens, 2 ones; 1 ten, 12 ones Name the word that describes what was done to show the number in different ways.

    asked by ashley
  334. probability and statistics

    (Right Triangle Problem) Randomly cut a line segment into three pieces. What is the probability that these three pieces can form a right triangle?

    asked by Anonymous
  335. physics

    A lamp hangs vertically from a cord in a descending elevator that decelerates at 2.6 m/s2. (a) If the tension in the cord is 54 N, what is the lamp's mass? (b) What is the cord's tension when the elevator ascends with an upward acceleration of 2.6 m/s2?

    asked by Rebekah
  336. Quantitative Methods

    Read the “JET Copies” Case Problem on pages 678-679 of the text of the Quantitative Methods Book. Using simulation estimate the loss of revenue due to copier breakdown for one year, as follows: 1. In Excel, use a suitable method for generating the

    asked by Ashley Johnson
  337. math

    -7x-(10-x)=58

    asked by Anonymous
  338. Pre-Medical

    Can someone please tell me what the stndardized employability skills? (Standardized as in used globally)

    asked by Anonymous
  339. physics

    How do we compensate for thermal expansion /contraction in the construction of metal pipes for carrying steam?

    asked by anil
  340. math

    Put counter in left cloud

    asked by Anonymous
  341. Math

    Which of the following is equivalent to (2x-3)^2=25 ? A) 2x - 3 = 5 B) 2x - 3 = -5 C) 2x - 3 = 5 and 2x - 3 = -5

    asked by Christian
  342. science

    a can potatoes has the following data: recall 4-9system carbs=22 fat is 10 grams and protien is 13 find the percentage of each if the calories = 275

    asked by paul
  343. Calculus

    show lim x->3 (sqrt(x)) = (sqrt(c)) hint: 0< |sqrt(x)-sqrt(c)|= (|x-c|)/(sqrt(x)+sqrt(c))

    asked by DJ
  344. Language

    What is Historical Fiction? Define Historical Fiction

    asked by Kennel
  345. physics

    How do we compensate for thermal expansion /contraction in the construction of steel bridges?

    asked by anil