Questions Asked on
October 8, 2009

  1. physics

    An elevator (mass 4125 kg) is to be designed so that the maximum acceleration is 0.0400g. What is the maximum force the motor should exert on the supporting cable? What is the minimum force the motor should exert on the supporting cable?

    asked by DJ
  2. Chemistry

    Metallic aluminum reacts with MnO2 at elevated temperatures to form manganese metal and aluminum oxide. A mixture of the two reactants is 67.2% mole percent Al. Find the theoretical yield (in grams) of manganese from the reaction of 240 g of this mixture.

    asked by Liz
  3. chemistry

    how could one distinguish 1-octanol from 1-octene and toluene from 1- octene?

    asked by ana
  4. arithmetic

    2.75+.003+.158=

    asked by Anonymous
  5. math

    Did you hear about the Cheerleader Who loved Math?

    asked by Haliegh
  6. Physics

    The acceleration of a certain rocket is given by ax=bt where b is positive constant, find the position and velocity at t=5.0s if Xo=0 and Vo=0 and b=3.0m/s^3?

    asked by sally
  7. chemistry

    Alexander wants to know exactly how many bars to pack in his backpack for the journey. To provide a margin of safety, he assumes that he will need as much energy for the return trip as for the uphill climb. How many bars should Alexander pack?" he weighs

    asked by carla
  8. Math

    This is the (average) sale price for single family property in Seattle and Port Townsend Year Seattle Port Townsend 1970 $38000 $8400 1990 $175000 $168400 (a) When will the average sales price in seattle and port t. be equal and what is this price? (b)When

    asked by SC
  9. Physics check

    A person has a reasonable chance of surviving an automobile crash if the deceleration is no more than 30 "g's" (recall that g = 9.8 m/s2). Calculate the force, in N, on a 68 kg person accelerating at this rate. 30"g" x 9.8 294 ms^2 f=ma 294x68 =19,992N

    asked by Jim
  10. Chemistry

    Sulfur trioxide dissolves in water, producing H2SO4. How much sulfuric acid can be produced from 12.1 mL of water (d=1.00g/mL) and 22.1 g of SO3?

    asked by Jon
  11. pos

    1. What about today's society reinforces American civic values? 2. What about today's society undermines American civic values? 3. How do civic values help make America's political and civil culture better? 4. Are there penalties for failing to adhere to

    asked by In great need of help
  12. physics

    A small boat is headed a harbor 32km directly northwest of its current position when its suddenly engulfed in heavy fog. The captain maintain a compass bearing of northwest and a speed of 10km/h relative to the water.The fog lift 3.o h later and the

    asked by Julie
  13. Math

    A musician plans to perform 6 selections for a concert. If he can choose from 8 different pieces, how many ways can he arrange his program?

    asked by Clair
  14. physics

    A student throws a set of keys vertically upward to her sorority sister, who is in a window 4.30 m above. The keys are caught 1.30 s later by the sister's outstretched hand. (a) With what initial velocity were the keys thrown? _____________ m/s upward (b)

    asked by blair
  15. Intro to Chemistry

    How do balance this equation K2S+CuSO4

    asked by Ariel
  16. math

    If it has been determined that the probability of an earthquake occurring on a certain day in a certain area is 0.05, what are the odds against an earthquake

    asked by jessica
  17. Economics Today the micro view 13th edition

    A British pharmaceutical company spent several years and considerable funds on the development of a treatment for HIV patients. Now, with the protection afforded by patent rights, the company has the potential to reap enormous gains. The government, in

    asked by Anonymous
  18. Geography

    I have to write an essay on this topic: 54. Compare and Contrast Switzerland and France in terms of language and culture. Before the 1500s, French was only spoken in Paris but as the kings in France expanded their control, they decreed that French be used

    asked by mysterychicken
  19. Chemistry

    How many electrons are transferred when C3H7OH burns in oxygen to form carbon dioxide and water? I have no idea where to start. Do I need to do half reactions? Can I even do half reactions for this?

    asked by Suzie
  20. Physics

    I have no idea how to do this. Anyone help? A cyclist passes a race check point at +5.5m/s and then accelerates ata constant rate of +.55 m/s^2. The cyclist forgot to check in at the check point, and after 20s turns back around to head back. How far did

    asked by me
  21. essay writing

    What is the number 1 essay writing rule? A.Edit and revise your essay. B.Always write five paragraphs. C.Always brainstorm before writing the essay. D.Start writing the essay the day it is assigned. .I CHOSE C.

    asked by larry
  22. probability

    How many ways can 12 people be seated about a round table?

    asked by Sharon
  23. english

    Im a Danish student, and I've written this summary which I would like someone to correct. Thanks in advance! In the short story”Beyond the pale”, published in 1888, author Rudyard Kipling states via his narrator that one should stick to its caste.

    asked by Jacob
  24. Chemistry

    Given the following equations: 2 H2 (g) + O2 (g)--> 2 H2O (l) deltaH = -571.6 kJ N2 (g) + O2 (g)-->2 NO (g) deltaH = +180.5 kJ N2 (g) + 3 H2 (g) --->2 NH3 (g) deltaH = -92.22 kJ Determine the enthalpy change (deltaH) for the following reaction: 2 NO (g) +

    asked by Katherine
  25. physics

    The acceleration of a certain rocket is given by a=bt where b is positive cnstant, find the position function Xo and Vo at t=o?

    asked by sally
  26. Physics

    How would the sun's gravitational force on earth change if Earth had twice its present mass?

    asked by Allan Berger
  27. college

    1. Capstone CheckPoint „h Due Date: Day 4 [Individual forum] „h Answer the following questions in a 100- to 200-word response. Cover each bullet point in your answer. o In the future, how will thinking critically influence the ways that you: „h Read?

    asked by Anonymous
  28. chemistry

    Can anyone help balance the following equation: Ag + HNO3(nitric acid) yields silver nitrate + nitrogen monoxide + water

    asked by adam
  29. physics

    Liz rushes down onto a subway platform to find her train already departing. She stops and watches the cars go by. Each car is 8.60 m long. The first moves past her in 2.05 s and the second in 1.73 s. Find the constant acceleration of the train.

    asked by blair
  30. probability

    If a box contains 4 red poker chips and 3 blue. What is the probability that all 3 will be red if we randomly select each chip with replacement? Woould it be 4/7*4/7*4/7 because there are 4 red or would it 3/7* 3/7*3/7 because they only want 3 of the 4?

    asked by Sharon
  31. chemistry

    How would you balance the following equation: Ag + HNO3(nitric acid) yields silver nitrate plus nitrogen monoxide plus hydrogen gas?

    asked by adam
  32. world geogrsphy

    which statement about australia minerals resources is accurate? A)australia contains rich mineral resources B)**australia mineral resources lie deep in the great barrier reef C)australia contains surprisingly few mineral resources D)australia mineral

    asked by henry
  33. physics - forces

    A person pushes a 16.0 kg lawn mower at constant speed with a force of 70.0 N directed along the handle, which is at an angle of è = 45.0° to the horizontal. Calculate the force the person must exert on the lawn mower to accelerate it from rest to 1.2

    asked by DJ
  34. math

    what did they call the duck who became a test pilot?

    asked by Anonymous
  35. maths

    The perimeter of a rectangle is 42 feet and its length is 3 feet less than 5 times its width find the dimensions of rectengle through linear equation.

    asked by hamza
  36. Spanish (Sra)

    Can someone check my work? English: My cousin came over to play. We were running around the living room. My brother and cousin crashed into each other. And my brother cut the corner of his eye open. Spanish: My primo vino a jugar, Nosotros estábamos

    asked by Larry
  37. Algebra

    I have to simplify this: (x^(1/2) * z^(-4/5)^4 My work: x^2/z^(16/5) Correct? Simplify (3+5SQRT2)(4+SQRT10) I have no idea how to foil this one.

    asked by Dan
  38. Physics

    This is another problem that I need clarification on since no one seems to be of any help at my school, A pulley system is used to lift a 52- crate.Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to

    asked by Matthew
  39. Physics

    a slide loving pig slides down a certain 45° slide in twice the time it would take to slide down a frictionless 45° slide. What is the coefficient of kinetic friction between the pig and the slide?

    asked by casey
  40. Physics urgent

    A rubber puck, initially travelling at 39 km/h, is sliding along an icy surface. How long (in seconds) would it take the puck to come to a complete stop if the coefficient of kinetic friction between the puck and the ice is 0.2?

    asked by moe
  41. physics

    A box weighing 69 N rests on a table. A rope tied to the box runs vertically upward over a pulley and a weight is hung from the other end. Determine the force that the table exerts on the box if the weight hanging on the other side of the pulley weighs one

    asked by DJ
  42. probability

    A pizza shop offers nine toppings. No topping is used more than once. What is the probability that the toppings are pepperoni, onions, olives, and mushrooms?

    asked by Sharon
  43. 6th grade

    Which grows faster, salt crystals or sugar crystals?

    asked by James
  44. social study

    what five themes do geographers use to study the earth?

    asked by Anonymous
  45. algebra

    hi could you please take me through the steps of solving the simultaneous equation graphically thank you. y-x+4=0 y-8+x=0

    asked by lila
  46. algebra

    Open-top box. Thomas is going to make an open-top box by cutting equal squares from the four corners of an 11 inch by 14 inch sheet of cardboard and folding up the sides. If the area of the base is to be 80 square inches, then what size square should be

    asked by genevive
  47. college chem

    In this experiment a hot metal block at 100oC is added to cold water in a calorimeter. The heat lost by the metal block equals the heat gained by the water and the two end up at the same temperature. In one experiment, the mass of the metal block is 89.5

    asked by Sarah
  48. math

    A 28-year-old man pays $192 for a one-year life insurance policy with coverage of $150,000. If the probability that he will live through the year is 0.9989, what is the expected value for the insurance policy?

    asked by TJ
  49. Spanish sra JMcGuin

    can you please look this over one more time not sure if it is en la mejoriamento and is batida brutalamente correct. i am so grateful sam La Bibliografía de Dolores Huerta Dolores Huerta tiene 76 años y tiene problemas de salud. Ella nació en Dawson,

    asked by sam
  50. physics

    A woman throws a ball at a vertical wall 40m away the ball is 20m above the ground when it leaves woman's hand with an initial velocity of 14m/s at 45degrees.when the ball hits the wall the horizontal component of its velocity remain unchanged.(a)where

    asked by Tina
  51. algebra 1

    The train made 7 stops before sue fell asleep if the average time between stops was 40 minutes, how much time passed between the time the train left chicago and the time the train made the seventh stop?

    asked by alex
  52. Economics

    I'm completely stuck on this question.. Trade barriers only work when..? -infant industries receive the protection. -the United States does not have a trade deficit. -American money is kept in the United States. -other countries do not use trade barriers.

    asked by Chuck
  53. Physics urgent

    What is the weight of a 76 kg astronaut on the Moon where the value of 'g' is only 17% the strength of 'g' on the Earth? (Answer should be expressed in N).

    asked by moe
  54. math

    F25 = 75,025 and F26 = 121,393 where Fn is the nth term in the Fibonacci sequence. Find F27.

    asked by chandice
  55. Physics - HELP please

    A 24.0 kg box (m1) rests on a table.(b) A 13.0 kg box (m2) is placed on top of the 24.0 kg box, as shown in Fig. 4-35. Determine the normal force that the table exerts on the 24.0 kg box. Determine the normal force that the 24.0 kg box exerts on the 13.0

    asked by DJ
  56. science

    Sulfur trioxide dissolves in water, producing H2SO4. How much sulfuric acid can be produced from 12.1 mL of water (d=1.00g/mL) and 22.1 g of SO3?

    asked by Jon
  57. physics

    A test rocket is fired vertically upward from a well. A catapult gives it an initial speed of 80.8 m/s at ground level. Its engines then fire and it accelerates upward at 3.90 m/s2 until it reaches an altitude of 920 m. At that point its engines fail, and

    asked by blair
  58. physics

    The acceleration of a certain rocket is given by a(t)=bt where b is positive constant compute the the average velocity of the rocket between t=4.5s and 5.5s at t=5.0s if x(t)=0 and b=3.0m/s^3, compare this average velocity and instaneous velocity at t=5.0s

    asked by Kelly
  59. physic

    Jules Verne in 1865 suggested sending people to the Moon by firing a space capsule from a 220-m-long cannon with a launch speed of 10.97 km/s. What would have been the unrealistically large acceleration experienced by the space travelers during launch?

    asked by aRd
  60. essay writing

    what is the last thing you should do before turning in your essay? A.Write the second draft. B.Proofread the essay to make sure it is free from errors. C.Revise and edit changing and rearranging the contect. D. All of the above .I CHOSE D.

    asked by larry
  61. literature novel

    In The Call of the Wild, what valiant, tragic figure among the dogs must finally be put down for the good of the lives of the team

    asked by ashante
  62. maths

    decide whether the graphs of the two equations are parallel lines: 1. 2x+3y=5 9y+6x-1=0 answer: yes 2. 15+3x-10y=0 30x+24=10y answer: yes please check if this is right. thanks

    asked by emma green
  63. US History

    I have had a hard time finding the results of the European Wars of the 1790's. I searched about 10 different wordings and such and would much appreciate a bit of help.

    asked by Jessica
  64. math

    what is 72.5 divided by 1.25

    asked by L
  65. math

    In how many ways can 12 students be put into groups of 3?

    asked by me
  66. Physics - HELP please

    A 24.0 kg box (m1) rests on a table.(b) A 13.0 kg box (m2) is placed on top of the 24.0 kg box, as shown in Fig. 4-35. Determine the normal force that the table exerts on the 24.0 kg box. Determine the normal force that the 24.0 kg box exerts on the 13.0

    asked by DJ
  67. science

    explain how to give the measurement in centimeters of a 56 mm object

    asked by De'Ja
  68. physics

    A magnetic field is perpendicular to the plane of a single turn circular coil. The magnitude of the field is changing so that the emf of 0.80 V and a current of 3.2 A are induced in the coil. The wire is then re-formed into a single turn square coil, which

    asked by sandy
  69. Math

    Find the point of intersection between y=2-(1/2)x and y=1+ax. (a=alpha sign). You answer will be a point in the xy plane whose coordinates involve the unknown a . My work so far: I set the two equations equal to each other because they intersect.

    asked by SC
  70. Algebra

    Can you please give an example step by step of how to solve a system of linear equations in three variables?

    asked by Joshua
  71. essay writing

    1.Which of the following can dramatically improve your grade on an essay? A.Providing an outline. B.Choosing an effective thesis sentence. C.Setting aside time to rewrite your essay. D.Writing on an interesting topic. .I chose d.

    asked by larry
  72. physics

    The acceleration of a certain rocket is given by a(t)=bt where b is positive constant compute the the instantaneous velocity of the rocket between t=4.5s and 5.5s at t=5.0s if x(t)=0 and b=3.0m/s^3?

    asked by rush
  73. Linear equations

    I am not good at equations I need to complete this chart for this problem... y=-1/2x-4 X y (x,Y) __ -1 ____ -2 __ ____ __ -4 ____ 2 ___ ____ 8 ___ ____ I tried the first problem but I do not think it is correct.. y=-1/2x-4 x=-1 y=-1/2(-1)-4 = -3 1/2 that

    asked by Anonymous
  74. Parent

    Mr Mike plants cabbages in a square grid so that the number of rows and columns are equal. He increased the size of his garden eqully in rows and columns to create a new patch that could grow 211 additional cabbages at the same spacing. How many cabbages

    asked by Kathryn
  75. math

    make up a set of at least twelve numbers that have the following land marks maximum:8 range:6 mode:6 median:5 make a bar graph of the data

    asked by Anonymous
  76. science

    WHAT IS THE MELTING POINT OF MAGNESIUM?

    asked by CHAKITA
  77. physics

    s man travel on train and throw a ball straight up relative to the train with speed of 4.90m/s the train has a velocity of 20.0m/sdue east so what is the ball's total time of flight?

    asked by danny
  78. physics

    s man travel on train and throw a ball straight up relative to the train with speed of 4.90m/s the train has a velocity of 20.0m/sdue east so what is the diplacement of the ball during its rise?

    asked by danny
  79. math

    Find the slope of the group of the linear function f: f(5/2)=7/2, f(4)=6

    asked by Anonymous
  80. US History

    In the United States what is the importance of the separation of church and state?

    asked by Jessica
  81. Algebra 1A

    From a base elevation of 8200 ft. a mountain peak in colorado rises to a summit elevation of 14588 ft. over a horizonal distance of 15842 ft. find the grade of the peak. The grade of the peak. The grade of the peak is %. Round to the nearest tenth as

    asked by Don
  82. Chemsitry 130

    Can someone please help me with the=is problem... In each of the following, determine which reactant is being oxidized and which is being reduced: A. Al(s) + O2(g) -----> Al2O3(s) B. Ca(s) + F2(g) -----> CaF2(s) Thanks so much for the help ;-)

    asked by Taylor
  83. college algebra

    y=-10x+5 m= what. I came up with 5 am I close

    asked by sonia
  84. maths

    find the value of y so that the line passing through the two points has the given slope: 1. (6,y), (3/2, 9/5), m=2/3 2. (12,y), (-6,9/7), m= -1/6 please explain how to do at least one of them. thanks!

    asked by emma green
  85. math 117

    Divide and Simplify 7y-7/4 divided by y-1/6y

    asked by Rmz
  86. chem

    If a student needs to prepare 50g of bromobenzene and expects no more than a 75% yieldl, how much benzene should the student begin with if the yield is 75%? C6H6(l)+ Br2(l) --> C6H5Br(l)+ HBr(g) I calculated the moles of C6H5Br as .3185. But ion the end my

    asked by Sindy
  87. math

    True or false? In every triangle, the centroid, incenter, and circumcenter are collinear.

    asked by thomas
  88. Quantum mechanics, eigenfunctions!

    Determine if the function sin(x)*e^(ax) where a=constant is an eigenfunction of the operators d/dx and d^2/(dx)^2 Okay. My understanding is that you use the operator and perform its "thing" on the function. In this case, you will have to find the 1st

    asked by Steven
  89. [math]

    how do I write 3x-2y=7 to get y by itself? thank u

    asked by [fufu]
  90. French

    Can you please check these thanks Directions: Moi: Donnez des réponses personnelles. 1. Tu dois boire beaucoup d'eau? Answer: Oui, je dois boire beaucoup d'eau. 2. Tu bois de l'eau? Answer: Oui, je bois de l'eau. 3. Qu'est-ce que tu bois quand tu as soif?

    asked by an unknown french girl
  91. Physics

    he weight of an astronaut on the moon is 127 N, where the value of 'g' is only 1.7 m/s2. What would the weight of this astronaut be on the Earth (in N)? I don't know if my attempt is rite? 127n/1.5ms^2 74.70N Divide 74.70N with earth value of G. What is

    asked by Jenny
  92. Organizational behavior

    Determine what you think would be the best three approaches for managing resistance to change, of the six approaches listed in the Skill Concepts and Behaviors section, to apply to the nursing teams situation.

    asked by Shy
  93. Statistics

    Joint probability density function is: x + y where 0

    asked by Sean
  94. CALCULUS! PLEASE HELP URGENT!

    Which of the following functions have a derivative at x=0? I. y= absolute value(x^3-3x^2) II y= square root(x^2+.01)- absolute value (x-1) III y= e^x/cosx

    asked by Mark
  95. 7th grade Algebra

    What kind of function would f(x)=7x+I-3l be? Would it be quadratic or absolute value?

    asked by Sarah
  96. Statistics

    A school counselor tests the level of depression in fourth graders in a particular class of 20 students. The counselor wants to know whether the kind of students in this class differs from that of fourth graders in general at her school. On the test, a

    asked by jig
  97. Statistics

    A researcher interested in relationships developed a questionnaire that measures the degree of affection adult men feel for their fathers. She has found that for the general population the distribution is skewed to the right, the mean degree of affection

    asked by jig
  98. Algebra

    I have to figure out how x^3+216=0 is factored, and what potential solutions might be. I factored it like this: (x+3)(x+3)(x+24), resulting in the solutions being -3 (double route) and -24. But my book says these are not correct answers. Why not? Can you

    asked by Katie
  99. probability

    What is the probabbilty that two certain people sit next to each other at a round table?

    asked by Sharon
  100. Math Inequalities

    b) Suppose you want to cover the backyard with decorative rock and plant some trees as the first phase of the project. You need 30 tons of rock to cover the area. If each ton cost $60 and each tree is $84, what is the maximum number of trees you can buy

    asked by Anonymous
  101. Economics

    Identify whether each occurence creates a positive, negative, or inframarginal externality. After walking by a fresh bakery, you decide to buy a donut. A homeowner who backs up on a city park occasionally has to listen to kids playing soccer.

    asked by Anonymous
  102. MATH

    A table of the U.S. population in millions indicated in 1960 the population was 181 million, in 1970 the population was 205 million, in 1980 the population was 228 million, and in 1990, the population was 250 million. Describe the context behind how the

    asked by Stacy
  103. personal fitness

    one I'm excited and two is where its at threes all numbers but four gets the money five percent to look up at six and seven sees the star at eight we open at nine and close at ten what are we?

    asked by brandi
  104. 7th grade math

    I hope this makes sense, but my teacher said he wants all exponents in the prime factorization, the example he gave was, 4^2 he wants 2^4 Is there a simple way to figure it out? for example, i'm trying to figure out 10^4.

    asked by brenda
  105. Engineering Materials

    Using mechanics of materials principles (ie. equations of mechanical equilibrium applied to a free-body diagram), derive the following equations. sigma' = sigma cos^2 θ = sigma(1+cos 2θ / 2) and tau = sigma sin θ cos θ = sigma( sin2θ / 2)

    asked by Z32
  106. algebra

    Gone fishing. Debbie traveled by boat 5 miles upstream to fish in her favorite spot. Because of the 4-mph current, it took her 20 minutes longer to get there than to return. How fast will her boat go in still water

    asked by Anonymous
  107. 3rd grade

    why does a tennis ball go furthur than a beach ball? force and motion question

    asked by timmy
  108. Criminal Justice

    What impact does terrorism and cyber crimes have on interpreting the fourth amendment?

    asked by Dale
  109. college

    Compare mechanistic and reciprocal interactionism. Give an example of reciprocal interactionism (influences among a person, a situation, and a behavior). Provide an example of mechanistic interactionism (a trait, a situation, and the relationship between a

    asked by Yolanda
  110. history

    what was the relationship between hamilton and great britain?

    asked by Desiree
  111. 5th grade math

    A girl bought a card and then returned it. The second card cost $1.50 less than the first card. She got 75 cents in change. How much did the first card cost?

    asked by lesa
  112. equations

    how would i begin this problem... graph the equation and identify the y-intercept. y+x=-5 I would first rewrite that into: y=x-5 then where do I go from there, how do I know what value to put for x??

    asked by Kathy
  113. French

    Complete with the correct form of the verb boire and finsh the sentence. Part 1 1. -Qu'est-ce que vous ---------? Answer: buvez -Nous -------------. Answer: buvons l'eau. 2. -Qu'est-ce qu'elle --------? Answer: boit -Elle --------. Answer: boit coca. 3.

    asked by an unknown french girl
  114. Physics

    A bothersome feature of many physical measurements is the presence of a background signal (commonly called "noise"). It is necessary, therefore, to subtract off this background level from the data to obtain a valid measurement. Suppose the measured

    asked by Marissa
  115. visual basic

    Im trying to get this program to average three number having a problem the sample nmubers im using are 6 6 2 average supposed to be 4.6667 but im just geting .6667 I think it has something to do with my s=value(i) not sure what i need to do now can anybody

    asked by vsu1
  116. math

    The hawks won 17 hockey games than they lost. They played 52 games in all and had a 3 ties. how many games did they lose? so 52 ..... games in all won 17......games ties.........3 this is what I do 52 - 17 ------ 35 so they had 35 games left. From here I

    asked by zoe
  117. Socila Studies

    Whatare 3 levels that gepgraphers might study? Which one of these levels covers the largest? How might sattelite images and computers help geographers improve their knowledge?

    asked by challie
  118. geometry

    how would you solve this math problem: Given AC with endpoint a (16,-6) and midpoint M (3, 7). What are the coordinates of end point C?

    asked by KIM
  119. geometry

    Find a function that models the area A of a circle in terms of its circumference C.

    asked by David
  120. algebra

    Find the value of y so that the line passing through the two points has the given slope? 1. (12,y), (-6,9/7), m= -1/6 _____________ write an equation in slope-intercept form. (then graph the equation). 2. 18y+2x-9=0 3. 3x-4y=-8

    asked by Anonymous
  121. spanish help please

    En ese momento el jet sacado, no tenía miedo. Aunque éste era mi primer viaje a otro país. Viajaba a donde mi grande - el abuelo había nacido. Iba a visitar la casa en donde él vivió como niño. Vería a la familia que nunca había conocido antes.

    asked by sam
  122. Physics

    A toy rocket is launched with vi=15 m/s at 50° above the horizontal. Fina the horizontal displacement, maximum height, and time of flight.

    asked by Anonymous
  123. History

    I have a question about American imperialsim. The American belief in superiority was one major factor that led to American imperialism. What were the social, economic, and strategic factors that also played a role in American imperialism? Thank you!

    asked by Punkie
  124. Algebra

    I am solving X^4-3x^2+2=0 I factored it to be (x^2-2)(x+1)(x-1) as my book suggested. But why is it three sets of parentheses? How do you know that it's supposed to be three sets of parentheses in opposed to two or four? And how come one of the answers

    asked by Katie
  125. world geography

    which statement is accurate? A)**some high islands receive only 20in.(51 cm) of rain annually B)low islands experience heavy rainfall c)heavy rains result when cool air mixes with warm ocean breezes D) the amount of rainfall varies from island to island

    asked by henry
  126. Geometry - Conditional Statements/Proof

    Rewire each statement as two if-then statements that are converses of each other. 18. Two angles are supplementary if and only if the sum of their measures is 180. 20. (x-4)(x+6) = 0 if and only if x = 4 or x = -6 22. Theorem 2-5 may also be worded in this

    asked by James
  127. Equations

    find the slope of the line containing the following points: (5/6 , -5) (-1/3, -1/3) can someone please help me I keep getting different answers.. I am not good at fractions especially with the negative signs... thanks

    asked by Kathy
  128. 8th grade History

    How did the ratification of the Constitution depend on the debates in each of the states?

    asked by Shavaleir
  129. essay writing

    1.Which of the following is the most effective opening sentence for an introductory paragraph? A.I heard a loud sound before I collaposed. B.Bang!That was the last sound i heard before I collapsed. C.The loud sound was the last thing i heard before i

    asked by larry
  130. algebra

    One type of probabilty used practically everyday is: a) experiental probability b) scientific probability c) frequency of occurence d) None of the above

    asked by Philine
  131. Science

    Do you guys know of a website where i can find the average temperature of these biomes? Tundra, Tiaga, Temperate Deciduous Forest: Tropical Rainforest: Grasslands: Desert: Rivers: Lakes & Ponds: Coral Reefs: Temperate Oceans: thanks:)

    asked by Nicole
  132. physics

    Altitude of 575 with zero initial velocity; 8.0s she falls freely; rate of descent et 15m/s^2 until her rate of descent reaches 5.0m/s.At this point she adjust her rocket engine control to maintain that her rate of descent until she reaches ground. (a) on

    asked by rush
  133. math

    Hi, I wrote the first one wrong... The hawks won 17 more hockey games than they lost. They played 52 games in all and had 3 ties. How many games did they lose? This is what I did so far... 52 games ...-17 ------ 35 okay now there is 3 ties??? so they had

    asked by zoe
  134. Programming

    (i) What is binary tree (ii) Write a program to multiply any two matrices. (use any program of choice)

    asked by Beta plus
  135. Essay writing

    1. What is the most IMPORTANT key to an effective essay? A. A focused thesis sentence. B. Five paragraphs in the body. C. Interesting supporting details. D. A concluding sentence. .I CHOSE B.

    asked by larry
  136. physics

    Altitude of 575m with zero initial velocity; 8.0s she falls freely; rate of descent et 15m/s^2 until her rate of descent reaches 5.0m/s.At this point she adjust her rocket engine control to maintain that her rate of descent until she reaches ground. (a) on

    asked by rush
  137. social studies

    examples of worldviews

    asked by Anonymous
  138. Math

    The repeating decimal -1.1 Celsius converts to how many degrees Fahrenheit?

    asked by Mary
  139. geography

    what indicator shows a map reader which way is north it starts with "d" ends in "al" there is eleven letters total

    asked by Bubbles
  140. physics

    Altitude of 575m with zero initial velocity; 8.0s she falls freely; rate of descent et 15m/s^2 until her rate of descent reaches 5.0m/s.At this point she adjust her rocket engine control to maintain that her rate of descent until she reaches ground. How

    asked by monica
  141. biology

    why would someone choose to propagate a particular plant for commercial purposes by using vegetative structures instead of seed?

    asked by val
  142. Biology

    Can anyone give me a web site that can give me information for a lab report on observing diffusion? Thanks

    asked by Sue
  143. essay writing

    Which of the following does not belong in a conclusion paragraph? A. An attention grabbing sentence. B.A restated thesis statement. C.A conclusion sentence. D.A summary of supporting details .I CHOSE D.

    asked by larry
  144. social studies

    Boston Massacre event

    asked by angel
  145. U.S. History

    What were the results of the european wars in the 1790s?

    asked by Colby
  146. Physics

    A person walks first at a constant speed of 4.70 m/s along a straight line from point A to point B and then back along the line from B to A at a constant speed of 2.80 m/s. (a) What is her average speed over the entire trip? (b) What is her average

    asked by Zoe
  147. Business and Personal Law

    What are three names of unsecured credit cards that you can acquire?

    asked by bettina
  148. english

    what are phrases that mean someone has gone crazy: My first example: See flew way over the cucoos nest

    asked by sammi
  149. College

    What are the elements of the accounting environment? How do they affect the financial statements? Why are these elements important? How do they affect comparability between companies?

    asked by Krysta
  150. psy240

    describe common factors that influence what,when, and how much we eat

    asked by trudy
  151. social studies

    What are three examples of times when a society lost order and turned to chaos. (could be a city, country, prison setting, etc

    asked by kim
  152. psy240

    describe common factors that influence what,when, and how much we eat can any one help a little more than that thank you trudy

    asked by trudy
  153. French

    what are some antonyms for the word sombre in French. The word sombre means dark, which means gloomy, evil.

    asked by Anna
  154. physics

    For the following vector addition diagrams, use Pythagorean Theorem to determine the magnitude of the resultant. Use SOH CAH TOA to determine the direction. Use the tail end relative to due east. ^ I 4 m I ------>I 3 m I've got the Pythagoren Theorem and

    asked by Robyn
  155. 4th grade

    if a=11 b=2 c=18 then what does a+c-b=?

    asked by lauren
  156. math analysis

    what is the domain, range, and zeros of the function: g(t)= root 9-t?

    asked by Anonymous
  157. Psychology

    When writing a direct quote from the author word for word do you ident as the same for MLA style

    asked by Tanya
  158. physics

    what is the total time and displacement if the traveler on a train throw ball on level track straight up relative to the train with a speed of 4.90m/s and velocity of 20.0m/s ?

    asked by Ryan
  159. Ethics

    What are some advantages and disadvantages of utilitarianism?

    asked by Anique
  160. chemistry

    in response to DrBob, the textbook gives this equation for the problem. So if you could balance it as it is written, great!

    asked by adam
  161. finance

    how many securities are cross-list NYSE and toronto

    asked by Anonymous
  162. Statistics

    x is a random variable with the probability function: f(X) = x/6 for x = 1, 2 or 3 the expected value of X is?

    asked by Shellie
  163. geography

    how does floridas physical and cultural geography effect the way people live and work

    asked by marisa
  164. Chemistry

    Sulfur trioxide dissolves in water, producing H2SO4. How much sulfuric acid can be produced from 12.1 mL of water (d=1.00g/mL) and 22.1 g of SO3?

    asked by Jon
  165. 8th grade

    Why did Great Britian raise taxes in its american Cononies?

    asked by isela chaidez
  166. math

    percentage increase for 2,556,000,000 to 6,279,000,000 do you divide to get percentage or subtract then divide by 2 confused on this one.

    asked by donavan
  167. 8th grade

    Why did Great Britian raise taxes in its american Cononies?

    asked by isela
  168. Math

    twice what number is equal to three times that number

    asked by Mayah
  169. spanish sra j mcguin

    tenia viaje habia vivo veria eschuche cai llame olvidare permanciamos temo demostro compre amaria are all of the above preterite verbs

    asked by sam
  170. science

    what factors should be kept constant when comparing your weight from mars to earth

    asked by sally
  171. Equations

    Graph the equation x=5/2 how would i start this?? I tend to make things too difficult for myself...

    asked by Kathy
  172. Geometry

    Which point of concurrency in a triangle is the point of intersection of the three altitudes of a triangle?

    asked by Paul
  173. algebra

    a group of 10 six and twelve volt batteries are wired in a series. the sum of their voltage is 84 volts. how many of each type of the battery are used

    asked by taylor
  174. Geography & Culture

    What do the Nile valley and Mesopotamian civilizations have in common?

    asked by Shavaleir
  175. bifurcated

    As the heading indicates, I do indeed have two questions. Is there a way to find out more about the Roman Catholic Church's positions concerning issues along the continuum of sex/gender/sexuality/sexual orientation? Could somebody point me in the correct

    asked by Xander
  176. science

    what are the lens called to locate a specimen on a microscope?

    asked by cara
  177. Organizational behavior

    Read Skill Building Module #16: Managing Resistance to Change (pp. 615-616) in Organizational Behavior (11th ed.), excluding the Self-Assessment Interpretation section, and the Reinforcement Activities section. Determine what you think would be the best

    asked by Shy
  178. Biology

    Is the increased heart rate and blood pressure after exercise a feedforward or feedback mechanism? Can someone actually also explain to me what feedforward and feedback mechanisms are?

    asked by Alex
  179. math

    Suppose that a given parallelogram is not a rhombus or a rectangle. Which of the following can you conclude about this parallelogram?

    asked by thomas
  180. Bio

    What's the homeostatic response to increasing dead space? If you increase dead space the respiratory frequency decreases, right? Can you help me elaborate on this point and guide me to any references. Thanks!

    asked by Alex
  181. literature

    what are some active and passive voice verb example sentences

    asked by jess
  182. 5th grade

    What gives magnets their magnetic properties?

    asked by Omari
  183. Bio Last

    Can someone help me find the definitions of respiratory tidal volume and cardiac stroke volume.

    asked by Alex
  184. math

    The United States emitted 19.5 million t of nitrogen oxides (No) into the atmosphere in 1987. One metric to (1t) equals 1,000 kg. How many kilograms of NO were emitted to the atmosphere in the United States during 1987?

    asked by shauna
  185. chemistry

    I did an experiment where i used straws and water to simulate a chemical equilibrium. what other differences are there between a real chemical equilibirum and my exeriemtal one.

    asked by ana
  186. Geography & Culture

    What is the sacred sites of Native Americans?

    asked by Shavaleir
  187. small engine repair

    i need answer to exam 008901600

    asked by Anonymous
  188. algebra

    what would [5-2]+-7-(-9)= what would be my specific steps

    asked by PLEASE HELP ME
  189. grammar

    “As I was rounding the bend,” Peter explained, “I failed to see the sign”.

    asked by lisa
  190. small engine repair

    i need answer to exam 008901600

    asked by Anonymous
  191. geography honors

    which of the 13 original colonies was the last to be settled?

    asked by maribel
  192. Bio- Scientific Paragraph

    Write a paragraph (no more than 200 words, excluding references) describing the automated sequencing technique. Use the sources mentioned below and describe in your own words how automated sequencing is used by molecular biologists (for what purpose?) and

    asked by Sara
  193. Statistics

    A researcher conducts a t test for dependent means in which it is predicted that there will be a decrease in unemployment from before to after a particular job-skills training program. The cutoff "t" needed is -1.8333. The standard deviation of the

    asked by jig
  194. health

    5. CheckPoint: Numeric Filing  Resource: Ch. 6 of Essentials of Health Information Management: Principles and Practices  Due Date: Day 7 [Individual forum]  Complete Appendix E.  Post your completed Appendix E as an attachment. Numeric Filing

    asked by Susan
  195. math

    Louis and his family are going to the zoo. The price of a bus ticket is $1.00, but the family has some coupons. If Louis pays full price, his wife pays 2/3 of the regular price, and the two children pay 1/2 of the regular price. How much will it cost for

    asked by Anonymous
  196. world geography

    new zealand and papua new guinea have: A)huge manufactoring industries B)lush, tropical climates that produces many kind of tropical fruit C)**valuable timber resources D)very limited timber resources and poor soil.

    asked by henry
  197. 12th grade

    what's the key factors which led to our constitution

    asked by jordan
  198. world geography

    why is there no minnig activity on antarctica? A)***the potential profity is outweighed by the harsh conditions there. B)the continents coal and oil reserves were exploited and now have been exhausted C)minning there is prohibited by international

    asked by henry
  199. English Language

    My son's teacher asked him to give the opposites of these words..I can't seem to think of them myself..I am sitting here breaking my head, can anyone please help me. 1. bread 2. sack 3. peek 4. bare 5. wrap 6. cent 7. cell 8. knit 9. knot 10.lead

    asked by Mari
  200. physics

    I need to make a holder for a raw egg out of straws so when it is dropped from 8 feet. it will not break I need design ideas.

    asked by Deb
  201. sra j mcguin PLEASE HELP

    Hi -I am suppose to write about a vacation - and have at least ten preterite verbs in it. please look this over for me are the verbs below all preterite and are there any I did not include. also is my spanish grammar correct here is the list tenia viaje

    asked by sam
  202. math

    how do you evaluate an expression

    asked by hushka
  203. Max 2

    what is the effect of the delete operations on stack and queue. design algorithms

    asked by Programming & Algorithm
  204. Last equation question

    where would I graph this?? once again I hate fractions and equations... graph the equation x=7/2 can someone help me figure this out thanks last question of the day..

    asked by Kathy
  205. geology

    what are the distinguishing characteristics between the two catergories of rocks? (igneous)

    asked by Eleanor
  206. Geography

    I have to use the clues given to solve the puzzle of which place they're talking about: 'This is the largest city of this island country. Big Ben is located here' I think the country is Britain so...London? Thanks -MC

    asked by mysterychicken