1. Spanish

    For some reason these ones were tricky for me :/ 30. "Mi abuela está en el hospital." "Qué lástima! _______" a. No vale la pena b. ¿Qué te duele? c. No lo sabia d. ¿Qué tienes? C or D..? 31. A mis hermanos menores las peliculas de terror ______. a.
  2. physics

    Two capacitors, identical except for the dielectric material between their plates, are connected in parallel. One has a material with a material with a dielectric constant of 2, while the other has a material with a dielectric constant of 3. What is the
  3. physics

    A particle is traveling in a straight line at a constant speed of 27.3 m/s. Suddenly, a constant force of 14.3 N acts on it, bringing it to a stop in a distance of 56.4 m.
  4. physics

    A sports car moving at constant velocity travels 110m in 5.1s .If it then brakes and comes to a stop in 4.3s , what is the magnitude of its acceleration (assumed constant) in m/s2?
  5. physics

    6. Two particles are moving with a constant speed v such that these are always at a constant distance d apart and their velocities are equal and opposite. After what time do these return to their original positions
  6. physics

    (1) a car travelling at a constant speed of 20ms-1 overcomes a constant frictional resistance of 300N. What is the horse power of the engine? ( take 1h.p = 3/4 kw)
  7. Physics

    I would say it is true that the center of mass of an isolated system moves at a constant velocity, as long as there is a constant force applied to it. Am I correct?
  8. Physics

    A commuter backs her car out of her garage with a constant acceleration of 1.40 m/s2. (a) How long does it take her to reach a speed of 1.60 m/s? s (b) If she then brakes to a stop in 0.8 s, what is her (constant) deceleration? m/s2
  9. Physics

    Abby is swinging a ball on a string in a circle with a constant tension. Which of the following quantities is constant? a. acceleration b. speed c. none of the others d. velocity e. force
  10. physics

    2 particles ar moving with constant speed v such that they are always at a constant distance d apart and their velocities are always equal and opposite. After what time they return to their initial positions?
  11. physics

    A certain hydraulic system is designed to exert a force 100 times as large as the one put into it. (a) What must be the ratio of the area of the slave cylinder to the area of the master cylinder? (b) What must be the ratio of their diameters? (c) By what
  12. math

    3 glasses A, B and C whose capacities are in the ratio 1:2:3 are filled with mixture of acid and water. The ratios of acid to water in A, B and C are 1:5, 3:5 and 5:7 respectively. The contents of these glasses are emptied into a single vessel. What is the
  13. Chemistry

    A second order reaction has a rate constant of 8.7x10^-4/(M*s) at 30 degrees C. At 40 degrees C the rate constant is 1.8x10^-3/(M*s). What are the activation energy and frequency factor for this reaction? Predict the value of the rate constant at 4 degrees
  14. math

    i've been asked to ifnd the price-earning ratio of some stocks i'm unsure of how to do this I do not know which EPS value to use as I found some valeus on a website... Like for this company that I got a stock for h t t p : / / w w w . m a r k e t w a t c h
  15. chemistry

    i have to find the ratio of naoh:mass of KHP. but i have volume oh NaOH and mass of KHP and i don't know how to find the ratio then plz help me right now.
  16. College Algebra

    Alfred has just developed a new super ball and you have been asked to test its rebound capabilities. From your experiment you have found if you drop the ball from a height of 250 centimeters the first bounce average is 180 cm. rebound ratio = ? Using this
  17. Chemistry

    We did a lab. The reaction of zinc and iodine. We put 1 g of zinc with 1 g of iodine.. and used alcohol. Is the equation Zn + I2 ----> ZnI(2)? The moles of Zn atoms consumed were .003 mol. The moles of I atoms consumed were .004 mol. The class got a
  18. MATH

    Write each of the following ratios in simplest form. Marc took 3 hours (h) to mow a lawn while Angelina took 150 minutes (min) to mow the same lawn a week earlier. Write the ratio of Marc’s time to Angelina’s time as a ratio of whole numbers. ANSWER~6
  19. Microeconomics

    which of the following situations describes an equilibrium? which does not? if the situation does not describe an eqilibrium, what would an eqilibrium look like? a. many people regularly commute from the suburbs to downtown Pleasantville. due to traffic
  20. Chem.....

    Methanol, CH3OH, is produced on an industrial scale from carbon monoxide and hydrogen. At the temperatures used, gaseous methanol is formed according to the following thermochemical equation: CO(g)+ 2H2(g) <---> CH3OH(g) H = -90Kj 1. State Le
  21. Maths

    Please could I have some guidance and advice on the following question? A multiple choice question has 4 options, A,B,C and D. The numbers of students choosing the options are in the ratio 3:1:2:14. I need to calculate the number of students choosing each
  22. Chemistry

    Why do beryllium and fluorine combine in a 1 : 2 Ratio? Be is in group 2 (or IIA). F is in group VIIA (or 17 depending upon what system you are using). Therefore, flourine needs one electron to fill its outside shell. Be has two in its outside shell to
  23. math

    A Ferris wheel 28.0m in diameter rotates once every 21.0s. What is the ratio of a person's apparent weight to her real weight at the top? What is the ratio of a person's apparent weight to her real weight at the bottom?
  24. mathematics

    The government intends to build 20 more schools in a bid to fulfill education for all, millennium development goal by 2015. This would steadily host 20 percent growth of enrollment rate by 2016. The current strength of teacher-pupil ratio is 1:60; and the
  25. Physics

    A beam of mass mb = 10.0 kg, is suspended from the ceiling by a single rope. It has a mass of m2 = 40.0 kg attached at one end and an unknown mass m1 attached at the other. The beam has a length of L = 3 m, it is in static equilibrium, and it is
  26. titrations

    I have to find the correct acid-base indicator to use for the following titrations (methyl orange with end point @ pH 4, bromthymol blue with end point @ pH 7, or phenopthanlein with end point @ pH 9). I have several problems given to me, but first I'm
  27. physics multiple choice

    A person pushes horizontally with constant force P on a 230 N box resting on a frictionless horizontal floor. Which of the following statements about this box is correct? A.The box will accelerate no matter how small P is. B. The box will not accelerate
  28. physics multiple choice

    A person pushes horizontally with constant force P on a 230 N box resting on a frictionless horizontal floor. Which of the following statements about this box is correct? A.The box will accelerate no matter how small P is. B. The box will not accelerate
  29. Math

    An architect is building a building. Each floor is l0 ft. He wants to build 18 steps with a total run of 14 ft. What is the ratio? What is the slope of each step? The height/run ratio of the staircase is 10/14 = 5/7 Each step is 14/18 feet long (9.33
  30. art-colors

    what are all the different colors that mix to make other colors? like how when you mix red and yellow you get orange...what are all the other colors? well green + blue= brown yellow + blue= green red + blue = purple is that all? Yes, from what I've seen on
  31. Algebra

    Find the sum of the first five terms of an infinite geometric progression with a common ratio |r|<1 if the second term is (4/3) and the ratio of the sum of the squares of the terms of the progression to the sum of the terms of the progression is 3:1.
  32. math

    Can you use a proportion to solve any ratio problem? If you answer is yes, which ratio WOULD you NOT use a proportion to solve. If you answer is no, which ratio problem COULD you Not use a proportion to solve?
  33. math

    Can you use a proportion to solve any ratio problem? If your answer is yes, which ratio problem would you not use a proportion to solve? if your answer is no, which ratio problem would you be able to solve?
  34. Biology

    Fats are excellent energy storage molecules because a) they have a relatively high ratio of energy storing C—H bonds. b)they have a relatively high ratio of energy storing C=O bonds. c)they are hydrophobic and do not easily mix with water. d)they have a
  35. Chemistry

    Find the mininum ammount of 5.0 M HNO3 needed to dissolve 2.72 g of Cu (s). I have the balanced equation here: 2NO3-(aq)+8H+(aq)+3Cu(s)-->2NO(g)+4H2)(l)+3Cu2+(aq) Obviously it is a 2 moles NO3- to 3 moles of Cu (s) ratio. I converted grams Cu to moles
  36. Algebra

    Write a proportion using an unknown value x and the ratio 5:6 then solve it. In an orchestra, the ratio of trombones to violas is 1 to 3. There are 9 violas, Write a proportion that gives the number t of trombones in the orchestra. How many trombones are
  37. Physical Chemistry

    Calculate DS if the temperature of 3 moles of an ideal gas with Cv,m = 1.5R is increased from 200 K to 500 K under conditions of (a) constant pressure and (b) constant volume.
  38. Earth science

    what is the amount of force required to keep a 10kg ball moving in a constant direction at a constant velocity of 1 m/s ( ignore the effects of fricton
  39. college physics

    A commuter backs her car out of her garage with a constant acceleration of 1.20 m/s2. (a) How long does it take her to reach a speed of 1.60 m/s? s (b) If she then brakes to a stop in 0.8 s, what is her (constant) deceleration?
  40. Trigonometry

    The wheel makes 6 complete revolutions every 60 seconds. From this information, you can find the value of constant b. The constant is π/?. (Enter only the value that replaces the question mark.)
  41. Chemistry

    If the percentage of arsenic is 76% and the percentage of oxygen is 24% how do I calculate the chemical composition of the oxide of the arsenic? Thanks Pretend you have 100 grams of the stuff. Then 76 grams of As is how many moles? 76/74.9 =1.01 moles. How
  42. physics

    if a rocket engine delivers a constant thrust, does it deliver more power as the rocket speeds up force = mass*(acceleration) if the rocket accelerates, the force will increase wow,uh constant thrust means it is delivering constant power. the kenetic
  43. Jake

    If 142.38 g of l water at 21.7 degrees C is placed into a syrofoam cup with 174.36 g of ice at -27.5 degrees C what would be the final temperature of the entire contents at equilibrium? If it is partially frozen, how many g of the ice has melted? given
  44. Thermodynamics

    Heyy, Okay so I have a question that I'm trying to figure out how to do and I'm really lost, I was hoping somebody might be able to give me a hand. Thanks in advance. The question in general is, I know that the vapour pressure of CCl4 is 98mmHg at 25
  45. Accounting

    The ratio of __________ to __________ is an example of a __________ ratio. A. quick assets; current liabilities; leverage B. cost of goods sold; total assets; asset utilization C. net credit sales; average owner's equity; leverage D. net income after
  46. Math

    The ratio of __________ to __________ is an example of a __________ ratio. A. quick assets; current liabilities; leverage B. cost of goods sold; total assets; asset utilization C. net credit sales; average owner's equity; leverage D. net income after
  47. Accounting

    The ratio of __________ to __________ is an example of a __________ ratio. A. quick assets; current liabilities; leverage B. cost of goods sold; total assets; asset utilization C. net credit sales; average owner's equity; leverage D. net income after
  48. physics

    a) 2.0 kg of molten copper at its melting point of 1083 ºC (the copper is 100% liquid) is poured into a mold in a cooling water bath at 20 ºC. What mass of water is needed to bring the solidified copper and water to an equilibrium temperature of 30 ºC,
  49. Math

    It takes 11 cups of flour to make 3 loaves is bread. What is the ratio of cups of flour to loaves of bread? Write the ratio 3 ways: Word form: Colon form: Fraction form:
  50. Physics

    Two small charged spheres hang from cords of equal length L and make small angles angle1 and angle2 with the vertical. (a) If Q1 = Q, Q2 = 2(Q) and m1 = m2 = m, determine the ratio angle1/angle2. (b)If Q1 = Q, Q2 = 2(Q) and m1 = m,and m2 = 2(m), determine
  51. Microeconomics

    I am on the chapter for the factors of production: Question: A firm that hires two types of workers—some with computer skills and some without. If technology advances so that computers become more useful to the firm, what happens to the marginal product
  52. 7th Math

    I previously posted this today at 5:39 am and I am reposting this because I don't want this to be buried with other unanswered questions and I realized this was the wrong subject. Please check the 2 questions/problems along with my answers. Thank you
  53. help with homework! please!

    The graph below shows that h t t p ://tinypic. c o m /r/11shxdj/3 (take out spaces) a. favorable environmental conditions can cause a population to increase slowly at first and then rapidly b.favorable environmental conditions enable an equilibrium to be
  54. science please help!

    The graph below shows that h t t p ://tinypic. c o m /r/11shxdj/3 (take out spaces) a. favorable environmental conditions can cause a population to increase slowly at first and then rapidly b.favorable environmental conditions enable an equilibrium to be
  55. Maths

    The ratio of the number of adults and children during the performance is adults : children = 3:2 .For this performance find the ratio total cost of an adult tickets : total cost of a child tickets. give your answer in its simplest form
  56. math

    Thomas has a letter he wants to send to his girlfriend. the total perimeter of the blue stamp and envelop is 50 cm. the ratio between them is 1:4. What is the perimeter of the stamp? So I know that I need to let x be the width of the stamp and the width of
  57. physics help

    A woman is pushing a sofa at constant speed of 1.0 m/s on a horizontal surface. She exerts a horizontal force of 80 N in the direction of motion. A) how can the sofa move at constant speed without Newton's first law being violated? B)Approximately how hard
  58. Physics

    A cup of coffee is sitting on a table in an airplane that is flying at a constant altitude and a constant velocity. The coefficient of static friction between the cup and the table is 0.37. Suddenly, the plane accelerates, its altitude remaining constant.
  59. physics

    A cup of coffee is on a table in an airplane flying at a constant altitude and a constant velocity. The coefficient of static friction between the cup and the table is 0.18. Suddenly, the plane accelerates forward, its altitude remaining constant. What is
  60. Physics Classical Mechanics

    A uniform steel beam of mass m1= 300.0 kg is held up by a steel cable that is connected to the beam a distance L= 5.0 m from the wall, at an angle θ= 40.0∘ as shown in the sketch. The beam is bolted to the wall with an unknown force F⃗
  61. science

    1. which of the following must occur for speciation to take place? a. a population must be physically separated into groups b. harsh environmental conditions must be imposed on a population c. competition must occur between members of a populations d. some
  62. physics

    A cup of coffee is on a table in an airplane flying at a constant altitude and a constant velocity. The coefficient of static friction between the cup and the table is 0.100 . Suddenly, the plane accelerates forward, its altitude remaining constant. What
  63. physics

    A cup of coffee is on a table in an airplane flying at a constant altitude and a constant velocity. The coefficient of static friction between the cup and the table is 0.420 . Suddenly, the plane accelerates forward, its altitude remaining constant. What
  64. Physics

    A cup of coffee is on a table in an airplane flying at a constant altitude and a constant velocity. The coefficient of static friction between the cup and the table is 0.410 . Suddenly, the plane accelerates forward, its altitude remaining constant. What
  65. Nuclear

    Per GWe-year, a 3700 MWt Sodium Fast Reactor produces 558 kg and consumes 789 kg of fissile plutonium in the core while producing 455 kg and consumes 34 kg of fissile plutonium in the reflector (breeding blanket). Assume 200 MeV per fission and a
  66. Math

    There are 36 students in a student council in a school and the ratio of the number of boys to girls is 3:1 . How many more girls should be added to the council so that the ratio of boys to the number of girls may be 9:5
  67. 7th grade Math

    Two bags contain the same number of marbles. In one bag, the ratio of black marbles to white marbles is 4:3. In the other bag, the ratio is 3:2. Which bag contains more black marbles? Thanks!
  68. math

    the current liabilities of mohit ltd.are Rs. 150000 and its current ratio is 3:1 and liquid ratio is 1:1 . Calculate the value of current assets ,liquid assets and stock of Mohit Ltd.
  69. Accounts

    Q.5 . The current liabilities of Mohit Ltd are Rs. 150000 and its current ratio is 3:1 and liquid ratio is 1:1. Calculate the value of current assets, liquid assets and stock of Mohit ltd.
  70. Accounts

    The current liabilities of Mohit Ltd are Rs. 150000 and its current ratio is 3:1 and liquid ratio is 1:1. Calculate the value of current assets, liquid assets and stock of Mohit ltd.
  71. Math 156

    The ratio of girls to boys in Mr. Maddox's class of 20 students is 3:2. The ratio of girls to boys in Ms. Woods class of 17 students is 2:1. which teacher has more girls?
  72. math

    The sides of a triangle are in the extended ratio 2 6 7. If the perimeter of the triangle is 45 inches, then what is the length of the shortest side? A. 2 inches B. 3 inches C. 6 inches*** D. 12 inches The measures of the angle of a triangle are in the
  73. English

    Hi! ____ Ms. Kemp Recruits Volunteers As a new ninth grader at my high school, I was sitting in an assembly about volunteerism. The guest speaker was Ms. Francis Kemp. Today I had an experience worth writing about. I must admit that I did not have high
  74. Math

    What is the value of a stock that grows at a supernormal rate of 18% for the first four years, and then slows down to a constant growth rate of 10%? An annual dividend of $2.00/share was just paid, and the rate of return on common stock is 13%. Possible
  75. Math

    what is the constant in the expression? 3m+7 Also What does the word constant mean?
  76. math

    What is the difference between the constant of proportionality and the mean? Constant and Mean? Thanks
  77. science

    1. which of the following must occur for speciation to take place? a. a population must be physically separated into groups b. harsh environmental conditions must be imposed on a population c. competition must occur between members of a populations d. some
  78. physics

    A skate boarder traveling at a constant speed of 22 m/s on a road comes to a straight incline with a constant slope (do not use g for incline). While going up the incline, the skater has constant deceleration. If she is 16m up the incline after 12.0 s A)
  79. Chemistry

    A solution of barium chromate is prepared by dissolving 6.3 x 10-3 g of this yellow solid in 1.00 L of hot water. Will solid barium chromate precipitate upon cooling to 25°C? Proof? You want to compare Qsp to Ksp (at 25o C.) Ag2CrO4(s) ==>2Ag^+ +
  80. BioChemistry

    I had to calculate the conjugate base/acid ratio of phenol red in a phenol red solution prepared with a buffer I made and the base/acid ratio of just the phosphate buffer I made. I need to understand why these ratios are different. Can anyone help?
  81. geometry

    a large triangle is 15ft and the small triangle is 9ft. the triangles sre similar what is the ratio (larger to smaller) of the perimeters? possible answers: 25/9--1/6--5/3--9/25 the triangles are similar what is the ratio ( larger to smaller) of the area
  82. Macroeconomics

    Manipulation of the Cobb Douglas Equation gives us expression for output per working age person: growth rate of (Y/N)=[1/(1-alpha)*growth rate of TFP]+[(alpha/(1-alpha))*growth rate of (K/Y)]+ [growth rate of (L/N)] N is the working age population K is
  83. Physics

    A car of mass 1100 kg, moving with a speed of 73 mph on a highway, passes a small SUV with a mass 1 1 2 times bigger, moving at 1/2 of the speed of the car. (a) What is the ratio of the momentum of the SUV to that of the car? pSUV pcar = 1 (b) What is the
  84. Math

    A local animal shelter houses only cats and dogs. This week of all the baby animals, there are 16 kittens and 7 puppies. What is the ratio of kittens to all the baby animals? 16 to 23? A box contains three types of fruits: apples bananas and pears. There
  85. Math grade 6, ratio

    Mr. Lynch bought some oranges and pears.after giving away 10 oranges, he had twice as many pears as oranges left.if he had 24 pears in the end,what was the ratio of the number of oranges to the number of pears he had at first?
  86. Find the common difference or ratio in each..?

    Find the common difference or ratio in each sequence. Write an algebraic expression for the sequence and find the next three terms. 6. 160, 40, 10, 2.5... 8. -1, 2, -4, 8.... Can you help me find the answers?
  87. Maths

    Draw a rectangle of perimeter 30cm and length of sides in the ratio 1:2.draw two more rectangles of the same perimeter with the length of sides in the ratio 2:3 and 3:7 compute the areas of all three rectangles?
  88. finance (assumptions)

    The cost of capital for common stock is ke=(d1/Po)+g. What are the assumptions of the model? A. growth (g) is constant to infinity B. The price earnings ration stay the same C. The firm must pay a dividend to use this model D All of the above are
  89. maTH

    PART A)find x using the ratio of the sides 12 cm and 16 cm: x/20=12/16. Show your work PART B) find x using the ratio of the sides 6 cm and 8 cm. Show your work PART C) Explain why the answers to a and b should be the same The triangles are 1st one x,12
  90. Math

    Tom has green and red tomatoes in a bag a 4 to 3 ratio 5 green tomatoes and 5 red tomatoes were removed making the ratio become 3 to 2 how many red tomatoes were originally in the bag Please show me how to work the problem
  91. MATH

    PART A)find x using the ratio of the sides 12 cm and 16 cm: x/20=12/16. Show your work PART B) find x using the ratio of the sides 6 cm and 8 cm. Show your work PART C) Explain why the answers to a and b should be the same The triangles are 1st one x,12
  92. 6th grade math Variables and ratios

    I need help I don't know where to start or what to do I need guidance. Triangle A,B, and C have the ratio of the sides of triangle A to triangle B is the same as ratio of the sides of triangle B to triangle C. Triangle A has a base of 5 , Triangle B shows
  93. math

    PART A)find x using the ratio of the sides 12 cm and 16 cm: x/20=12/16. Show your work PART B) find x using the ratio of the sides 6 cm and 8 cm. Show your work PART C) Explain why the answers to a and b should be the same The triangles are 1st one x,12
  94. accounting..please help

    can you help me please for this solving problem below... problem: A, B and C shared the profit of Rs. 9,00,000 in the ratio of 2:2:1 without providing for interest on B’s loan, B granted a loan of Rs. 4,00,000 in the beginning of accounting year. Where
  95. accounting

    using the following information, calculate inventory turnover ratio, the average days in inventory, and the gross profit ratio for Howard Company for the year ended december 31, 2011( round to two decimal places) sales $225,00 Cost of goods $175,000 Ending
  96. Spanish

    Hola! Could you please check my work and correct me if I am wrong? 1. Antes de subir la escalera, la niña ___________ de los huéspedes. a. se despidieron b. se había despedido c. se despida d. ***se despidiera 2. Si me lo ______ antes, te habría dicho
  97. Chemistry

    Which of the following is NOT true for ΔGrxn? A.) If ΔG°rxn > 0, the reaction is spontaneous in the forward direction. B.) If Q = 1, then ΔGrxn = ΔG°rxn.If ΔG°rxn = 0, the reaction is spontaneous in the reverse direction. C.)
  98. statistics

    Is Independent variable Depression categorical nominal or ordinal or continuous variables (interval or ratio) Answer: ordinal Is Independent variable College Life(academic and social) nominal or ordinal or continuous variables (interval or ratio)? Answer:
  99. chemistry

    Gas A has a density that is 1.20 times that of gas B. If gas A effuses through an orifice at a rate of 3.41g/L, at what rate will gas B effuse? Hint: Ratio the molecular masses to the densities. Use this information with Graham's law of diffusion. Note
  100. microeconomics

    The short-run cost curve for each firm's long run equilibrium output is C=y^2-20y+400. Calculate the short-run average and marginal cost curves. At what output level does short-run average cost reach a minimum? I already know the MC and the SRA is TC/Q. I