Questions Asked on
June 21, 2011

  1. PHYSICS

    A 900 kg car pushes a 1900 kg truck that has a dead battery. When the driver steps on the accelerator, the drive wheels of the car push against the ground with a force of 4800 N. (a) What is the magnitude of the force of the car on the truck? (b) What is

    asked by Kate
  2. geometry

    Given: BD is a diameter m 1 = 100°m BC = 30° m 2 = ?degrees Given: BD is a diameter m 1 = 100°m BC = 30° m 3 = ? degrees Given: BD is a diameter m 1 = 100°m BC = 30° m 4 =? degrees Given: BD is a diameterm 1 = 100°m BC = 30° m AD = ?degrees Given:

    asked by terri
  3. Business Statistics

    John & Jane are married. The probability that John watches a certain television show is .4. The probability that Jane watches the show is .5. The probability that John watches the show, given that Jane does, is .7. 1) find probability that both John & Jane

    asked by CC
  4. chemistry

    25cm3 of a solution of 0.1mol dm-3 NaoH reacts with 50cm3 of a solution of hydrochloric acid.What is the molarity of the acid

    asked by jonah
  5. physics

    As a baseball is being caught, its speed goes from 30 to 0 m/s in about 0.005 its mass is 0.145. A) What is the baseballs acceleration in m/s^2 and in g's? B) What is the size of force acting on it?

    asked by Ralph
  6. chemistry

    molecular and net ionic equations for FeCl3 + Na2S

    asked by chelsea
  7. Physics

    "The energy that is transferred as heat to or from the object with the larger heat capacity must be greater than the energy that is transferred as heat to or from the object with the smaller heat capacity." Can someone explain why this concept is true or

    asked by Josh
  8. reading

    Below is the last stanza of a poem, "Dover Beach," written in 1876 by Matthew Arnold.    Ah, love, let us be true    To one another! for the world, which seems    To lie before us like a land of dreams,    So various, so beautiful,

    asked by Anonymous
  9. chemistry

    Calculate the number of moles of FeSO4 in 25cm3 of a 0.2mol dm3 solution

    asked by Richard
  10. physics

    a driver releases an air bubble of volume 2.0 cm^3 from a depth of 15 m below the surface of a lake where the temperature is 70C.

    asked by j
  11. PHYSICS

    The three ropes in the figure are tied to a small, very light ring. Two of the ropes are anchored to walls at right angles, and the third rope pulls as shown, with T3 = 90 N and θ = 35°. What are T1 and T2, the magnitudes of the tension forces in the

    asked by Sam
  12. chemistry

    Calculate the relative molecular mass of a gas if a 500cm3 sample at 20¢ªC and 1 atomic mass of 0.66g

    asked by jose
  13. Integrated Physics and Chemistry

    How many calories are absorbed by a copper spoon with a mass of 200 grams as it changes from 28°C to 33°C? A) 0.00027 B) 3 C) 90 D) 13,000 And this one. How do i solve this one?

    asked by Destiny
  14. physics

    How much force does an 60 kg astronaut exert on his chair while accelerating straight up at 8m/s squared?

    asked by Kate
  15. geometry

    what is the similarity ratio for two circles with areas 2pi m2 and 200pi m2

    asked by Anonymous
  16. physics

    How much force does an 60 kg astronaut exert on his chair while accelerating straight up at 8m/s squared?

    asked by Kate
  17. Physics

    A flower pot is dropped out of the twentieth story window. How far does the pot drop in 3 seconds? How fast will it be moving after 7 seconds?

    asked by Nicki
  18. physics

    A boy drops a stone-A, down from a cliff 480 meters high, next he throws a stone-B, 1 second later - at what initial velocity was the stone-B be thrown so as to meet the stone-A on ground at the same time? g=10 m/s2.

    asked by alex
  19. AP English Lang. & Comp.

    My Assignment: Read the book, 'Animal Farm' by George Orwell. After reading the book, create a composition that examines the similarities and differences between the Russian Revolution and the events in this novel. Research any other 'rebellions' that have

    asked by Jordan
  20. physics

    A body travels along a circular path of radius 70 m.After travelling half a revolution in 20 s find the ; 1.average velocity 2.average speed

    asked by Saurabh
  21. English

    Thank you really much. Here are some more sentences I'd like you to check. 1)Victorian refers to a set of moral values which were established during the reign of Queen Victoria. They were based on personal duty, hard work, respectability and charity. )

    asked by Henry
  22. Physics

    A 36 kg box hangs from a rope. What is the tension in the rope if the following are true? (a) The box moves up a steady 5.0 m/s? (b) The box has vy = 5.0 m/s and is slowing down up at 5.0 m/s2?

    asked by Ashley
  23. Math

    1.Approximate sqrt3 by applying Newton's Method to the equation (x^2-3) = 0 2.The equation (x^3-x-2) = 0 has one real solution for 1

    asked by Sandhya
  24. stressed syllables

    umbrella, homework,slowly, follow... what word of stressed syllable is different?

    asked by zxania
  25. Physical Science 2

    Given that iron has a density of 7.87 g/cm3, calculate the volumeof 100 g of iron and 50 g of iron

    asked by John
  26. English

    I corrected the two sentences as you told me. Can you please check them? Thank you. 1) Coleridge's view of nature, unlike Wordsworth's, is infused with abstract and supernatural meanings. 2) Differing from Wordsworth, Coleridge's view of nature is infused

    asked by Henry
  27. math

    Determine the equation of joint variation. Then solve for the missing value. x varies directly with y and z. x = 400 when y = 8 and z = 10. Find x when y = 10 and z = 12.

    asked by tyler
  28. Chemistry

    A liquid hydrocarbon (Cx Hy) is found to be 16.37% H by mass. A 1.158-g vaporized sample of the hydrocarbon has a 358 mL volume at 71.0 C and 749 mmHg. what is the molecular formula for this hydrocarbon?

    asked by Katrina
  29. To Ani - re Afrikaans post

    I have deleted your post because you included your email address in it. That is not a safe thing to do online. Please remember NOT to post any personal information. Please also remember to ask a specific question. No one will be able to help you if you

    asked by Writeacher
  30. chemistry

    consider a neutral atom with 30 protons and 34 neutrons. What is the mass number for the atom?

    asked by mema
  31. Math

    Express the number 25 as a sum of two nonnegative numbers whose product is as large as possible.

    asked by Sandhya
  32. Nursing School

    how many grams of lithium hydroxide are needed to remove 4500 grams carbon dioxide by a submarine atmospheric regulator and acts according to the following formula? 2LiOh+CO2>Li2CO3+H2O

    asked by Kenzie
  33. Chemistry

    3. A liquid hydrocarbon (Cx Hy) is found to be 16.37% H by mass. A 1.158-g vaporized sample of the hydrocarbon has a 358 mL volume at 71.0 C and 749 mmHg. what is the molecular formula for this hydrocarbon? 4. A 1.00 g Sample of C7H603 (s), us completely

    asked by Katrina
  34. chemistry

    If 1.5 mol of each of the following compounds is completely combusted in oxygen, which one will produce the largest number of moles of H2O and why?

    asked by justin
  35. nursing

    Intravenous infusions of sodium bicarbonate are often given to acidotic patients to correct acidosis and relieve the strain of rapid breathing. Explain why bicarbonate is helpful in this situation. What would happen if too much bicarbonate were given?

    asked by skyler
  36. physics

    1. There are three forces acting on an object, a 30N force pulling right, a 50N force pushing right, and 30N frictional force pushing left. a. What is the force of gravity on this 15kg object? b. If the object is on the ground what is the normal force

    asked by molly
  37. Physics

    1. Tyler pulls a box full of baby ferrets across the floor by means of a rope that is tied to the box. The rope makes an angle of 41 degrees with the horizontal and tyler pulls on the rope with a force of 60N. a)What is the horizontal component of the

    asked by Anonymous
  38. Life orentation

    A clear explanation of how smoking is a human factor that may cause ill health, accidents, crises or disaster?

    asked by Angel
  39. GEOMETRY !!!

    1)(5, -3) is reflected over the y-axis. What are the coordinates of the image? A) (5, 3) B) (-5, 3) C) (-3, 5) D) (-5, -3) 2)If a translation is defined by (x, y) (x + 2, y - 3), what is the image of the preimage point (-3, 5)? A) (-5, 8) B) (-5, 2) C)

    asked by Rae Rae
  40. boooring chemistry!!:(

    Why do the halogens easily form ionic and covalent bonds? Can someone explain this to me?! :(

    asked by marie(:
  41. English

    Could you please check these last two sentences, please? Thank you for your help. 1. Britain entered the First World War in 1914 by declaring war on Germany after the German invasion of Belgium. Peace was made at Versailles in 1919. Many British war poets

    asked by Henry1
  42. Physics

    A hang glider and its pilot have a total mass equal to 120 kg. While executing a 360 degree turn, the glider moves in a circle with an 8-m radius. The gliders mass is 10 m/s. a) what is the net force on the hang glider? b) What is the acceleration?

    asked by Isaac
  43. physics

    1. An object traveling at a constant speed of 22m/s begins to experience a force of 15N in the opposite direction of its motion. (Hint given: Start by finding objects acceleration) a. How long will it take for the 8kg object to come to a complete stop once

    asked by molly
  44. Physics

    Suppose a cylindrical platform with moment of inertia 0.005kg m2 is freely rotating at angular speed 10 rad/s. A disc initially, rotationally at rest with mass 0.6kg and radius 0.1 m is dropped onto the platform so that their centers coincide. The kinetic

    asked by Michele
  45. Physics

    What is the mass of a football player who 1250 N?

    asked by A
  46. rfvv

    The dentist's is very busy, so we have to book the visit beforehand. You have to have your decayed tooth pulled out, but we have to wait for about one month? Can you wait? If you feel painful from time to time, let's go to the dentist's and if a doctor can

    asked by English
  47. Phyics

    If a 68kg object is being pulled across the hard floor with a horizontal force of 400N... a. What would the acceleration of the object be if it was on a frictionless floor? b. if there were friction, what would the force of friction be if it was pulled at

    asked by molly
  48. math

    Filling a tank. Two pipes are connected to the same tank. Working together they can fill the tank in 4 hrs. The larger pipe working alone can fill the tank 6 hrs less than the smaller one, HOw long would the smaller one take, working alone, to fill the

    asked by AJA
  49. chemistry

    what is the following reaction? HNO3(aq) + KOH(aq) ---> KNO3(aq) + H2O(l)

    asked by miranda
  50. business communication

    Which of the following is a challenge to building goodwill? (Points: 5) Stating that the customer's criticism of the company is justified Stating that the company has made an error Answering no to the customer Making it easy for the customer to respond Is

    asked by lisa
  51. psychology 201

    The text summarizes positive psychology as being aware that humans are both creatures and creators of their personal and social worlds. What does this statement mean to you? Do you agree that humans are creatures as well as creators of their personal and

    asked by TALIA
  52. Math

    write as a single fraction in its lowest terms: (x-2)/3 + (x+1)/4

    asked by Diana
  53. Algebra

    Perform the indicated operation if possible simplify 3/4 / (-2/3)

    asked by Shondra
  54. math

    Rewrite with positive exponents. Assume that even roots are of nonnegative quantities and that all denominators are nonzero. (2x/y2)^-4

    asked by NATASHA
  55. Physics

    2. Tyler pulls a box full of baby ferrets across the floor by means of a rope that is tied to the box. The rope makes an angle of 41 degrees with the horizontal and tyler pulls on the rope with a force of 60N. a)What is the horizontal component of the

    asked by Molly
  56. chemistry

    complete and balance the following molecular equations and then write net ionic equations for each reaction. BaCl2(aq) + K2SO4(aq) KNO3(aq) + HCl(aq)

    asked by chelsea
  57. geometry

    Find the total surface area of a square pyramid with a base length of 18 and height of 12

    asked by Anonymous
  58. statistics

    Suppose you want to test the claim that mu is not equal to 3.5. Given a sample size of n = 31 and a level of significance of alpha = 0.10 when should you reject Ho? A) Reject Ho if the standardized test statistic is greater than 2.575 or less than -2.575.

    asked by Brittany
  59. Algebra

    Identify the terms in each expression -4-3x+2xy

    asked by Poochie
  60. Physics

    Block B weighs 716 N. The coefficient of static friction between block and table is 0.31. Assume that the cord between B and the knot is horizontal. Find the maximum weight of block A for which the system will be stationary. The figure has block B on a

    asked by Chelsea
  61. Business Comm 1

    What is deductive order strategy?

    asked by M arla
  62. Physics

    You throw a ball horizontally off of a building with a horizontal velocity of 5 m/s. What's the ball horizontal velocity 8 seconds later? How high should the building be if you want the ball to fall for a total of 12 seconds?

    asked by Jennifer
  63. English - Debate writting

    PLS I NEED POINTS TO WRITE THIS DEBATE. Write against the motion ' The use of mobile phones by second cycle institution boarding students is essential '.

    asked by Joseph
  64. Physics

    James and Steve have a contest to see who can kick a football further. James kicks the football at an angle up of 57 degrees, and a speed of 75m/s. Steve kicks the ball with a speed of 100m/s, at an angle up of 48 degrees? Who wins the contest? Please show

    asked by Molly
  65. math

    Joe has a collection of nickels and dimes that is worth $6.20. If the number of dimes was doubled and the number of nickels was decreased by 37, the value of the coins would be $8.85. How many nickels and dimes does he have?

    asked by TAINA
  66. anthropology

    mechanism of natural selection( heritability, variation, differential reproductive success) how it works with behavioral examples

    asked by ami
  67. mathematics

    Given that Sin(A+B)=2Cos(A-B) and tan A = 1/3 , Find the exact value of tan B.

    asked by ceasar
  68. chemistry

    Which of the following would be the best technique to use in order to separate a soluble solid from a liquid?

    asked by xavier
  69. geometry

    A rectangular garden 10m * 18m . Find the area of a sidewalk that is 2m from the side of a garden ?

    asked by lina
  70. chemistry

    calculate the solubility of na cl

    asked by shafie
  71. electric power tools

    what is the purpose of a diode in a cordless drill or power screwdriver?

    asked by vicki
  72. chemistry

    The body consist of elements, 65% oxygen is in the blood and 18% carbon. Anything in the body tends to be a compound. Is blood always 65 % oxygen and 18% carbon?

    asked by mema
  73. Chem

    6.6×10−3 M Ba(OH)2 and 1.00×10−2 M BaCl2 what is [OH-] of solution?

    asked by Lilly
  74. business communication

    A letter can: (Points: 5) influence what a person thinks about an organization. strengthen positive tone with the use of "we." help you build on an exaggerated attitude. help your customer overcome your bragging attitude. is A correct any other opinions

    asked by lisa
  75. moore boring chemistry! :(

    Why do groups I, II, & III easily form halide compounds? & can you explain what a halide compound is?

    asked by marie(:
  76. Physics

    A sample of serum has a mass of 54 gm and a volume of 225cm. What's the density in g/cm? I think the answer is .24g/c please correct me of I'm wrong but my ? is what would be the mass of 150 fluid ounces of this serum? What would be the volume of 1 pound

    asked by Wendell
  77. algebra

    what is 6y square -5y -2??

    asked by jo
  78. algebra

    As you are leaving the community, you notice another new community just down the street. Because you are in the area, you decide to inquire about it. a. The sales representative here tells you they also have two floor plans available, but they only have 38

    asked by Libby
  79. math

    Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. -15r + 12s = 24 30r – 24s = 48

    asked by NATASHA
  80. physics

    1. a force of 30n with a direction of 35 degrees northwest acts on point p. Find: a) the northward component on the force b) the westward component of the force Please show work. Thanks!

    asked by Molly
  81. English

    Can you just check if everything is correct? Thank you. 1) Focus on the two recurrent themes in Joyce’s Dubliners and explain what all the characters have in common. They focus on two recurrent themes: paralysis and epiphany. 2) Paralysis can be

    asked by Henry
  82. Spanish

    Nobody wants to go with me. A) no va alquien conmigo. B) no quiere ir conmigo C) quiere ir nadie conmigo D) no quiere ir nadie conmigo. i got c. is that correct?

    asked by Lindsey
  83. MATHEMATICS

    Given that Sin(A+B)=2Cos(A-B) and tan A = 1/3 , Find the exact value of tan B.

    asked by CHRYSTABELLE
  84. mathematics

    Given that A+B =120¢ª and cos A + cos B = 1/¡î2 show that cos(A+B)/2 =1/¡î2

    asked by CHRYSTABELLE
  85. math

    Multiply. show complete work 2x + 4 by -5x2 – 3x – 2

    asked by AJA
  86. AP World History

    3.Explain the major tenets of Hinduism and its evolution from the Aryans to the Gupta. Please help with this question I have no idea how to answer its the last one could you give me some websites please. -Thank You

    asked by Nina
  87. math

    A car travels at an average speed of 36 kilometers per hour. Write and solve an equation to predict how many hours if will take travel 432kph. It if continues of this speed.

    asked by jewel padilla
  88. science

    cslculate the molarity of a solution of 10.0g MgCl2 in a 300.0ml of solution

    asked by marcus
  89. CHEMISTRY

    ASSIGN FORMAL CHARGES TO FOLLOWING STRUCTRE, H-N-C-H3

    asked by Anonymous
  90. Physics

    If a 70g swimmer pushes off a pool wall with a force of250n, what is her acceleration?

    asked by A
  91. CALCULUS

    difinite integral f(x)=8-4 cube root-3(x) from x=0 to x=8

    asked by renee
  92. Lab

    When doing a virtual lab everything is exact, but why would they still ask for absolute and relative errors?

    asked by Diana
  93. English

    I forgot to include this sentence. Can you please check the tense choice since I switched from the past to the present? Thank you. 1) In the poem Daffodils the flowers are presented not as statically as in a painting, but alive with motion. 2.They lay

    asked by Henry
  94. English

    I left out the following sentences. They are part of the same paragraph. Thank you. 6.She is not going to give up (?) her second-holiday home because the rent is very cheap and the place does her husband good because it keeps him three hundred miles away

    asked by Henry
  95. science

    A diesel engine's piston compresses 16 cm3 of fuel-air mixture into 1 cm3. The pressure changes from 1 atmosphere to 48 atmospheres. If the initial temperature of the gas was 305 K, what was the final temperature? Note: As long as the units for pressure

    asked by jasmine
  96. science

    a piece of wood that measures 3.0 cm by 4.0 cm by 5.0 cm has a mass of 90.og. what is the density of the wood? would the piece of wood float in water? remember the density of water is 1.00g/ml

    asked by dylan
  97. English

    Could you please help me check these sentences? Thank you very much in advance. 1) The First World War, or the Great War as it used to be called, is rightly thought of as bringing cataclysmic changes in life, thought and social forms not only in Britain

    asked by Henry1
  98. english

    whats a tip to write down on improving a newspaper?

    asked by sarena
  99. math

    Subtract.show complete work (2x8 – x3 + 4x2 + 5) – (8x7 + 8x3 – 4x)

    asked by AJA
  100. math

    9^x - 4 X 3^x = 45. Find x In words: 9 raised to the power x minus 4 multiplied by 3 raised to the power x is equal to 45. Find x.

    asked by Khalid
  101. Algebra

    Write an equivalent expression without using grouping symbols -(3x+5)

    asked by Poochie
  102. Physical science

    A projectile spends a total of 20 seconds in the air. It reaches a peak height of 8 meters. How long does it take to reach it's peak height

    asked by Rosie
  103. mathematics

    Given that A+B =120¢ª and CosA + Cos B = 1/¡î2 show that cos(A+B)/2 =1/¡î2

    asked by CHRYSTABELLE
  104. algebra

    1. Imagine you are in the market for a new home and are interested in a new housing community under construction in a different city. a. The sales representative informs you that there are 56 houses for sale with two floor plans still available. Use x to

    asked by Libby
  105. statistics

    You are the manager at a company and are asked to present a report on the year-to-date performance of your division. What type of statistical information would you include in your report? In paticular, which descriptive statistics (mean,median, standard

    asked by triplec
  106. Physics

    example that show the # part of distance and the # part of displacement can be different for the same motion

    asked by Edward
  107. Chem

    Find [OH-] of 0.325 M (NH4)2SO4 and 0.490 M NH3

    asked by george
  108. operating system

    Given that main memory is composed of three page frames for public use and that a seven page program (with pages a, b, c, d, e, f, g) requests pages in the following order:

    asked by Anonymous
  109. Social Studies

    Why might the Unions advantages have not guaranteed easy victory over the Confederate?

    asked by Melissa Tavares Elgamel Wong
  110. college chemistry

    Why is iodine important to biological tissues such as the thyroid gland? Give a prediction for why iodine is added to the table salt supply. ** I have no idea! :(

    asked by Jake
  111. math

    Given the quadratic function f(x) = x2 – 12x + 36, find a value of x such that f(x) = 25.

    asked by RANDA
  112. BIS155

    If data is in text file form, what step will you take to assume the data is usable and ready for analysis?

    asked by Anonymous
  113. Physical science

    A projectile spends 20 seconds in the air. It reaches a peak height of 8 meters. How long does it take to reach it's peak height? The projectile has a range of 80 meters. What is it's horizontal velocity?

    asked by Rosie
  114. Physics

    What is the difference between velocity and acceleration?

    asked by Kiran
  115. CALCULUS

    difinite integral f(x)=1/y^2dy from x=1 to x=4

    asked by renee
  116. Life orientation

    5 ways in which human impacts on community

    asked by Katlego
  117. Business Connunication

    Is: "Learn how to analyze business audiences, improve your style, and edit thoroughly." An example os parallel structure?

    asked by M arla
  118. Physics

    1. a force of 30n with a direction of 35 degrees northwest acts on point p. Find: a) the northward component on the force b) the westward component of the force

    asked by Anonymous
  119. Physics

    James and Steve have a contest to see who can kick a football further. James kicks the football at an angle up of 57 degrees, and a speed of 75m/s. Steve kicks the ball with a speed of 100m/s, at an angle up of 48 degrees? Who wins the contest?

    asked by Anonymous
  120. math

    Sum of 2 numbers is 1 and their product is 1/8. Find their difference.

    asked by Khalid
  121. geography

    what is a map?!

    asked by sia
  122. earth

    If the angular velocity is increased by 17 times of the earth what will be the weight of an object at the equator?

    asked by Raju prasad
  123. Africa

    What ir irrigation agriculture?

    asked by Ofor
  124. math

    the equation of a line perpendicular to the line y = x - 3 and containing the point (8, -2).

    asked by olivia
  125. math

    Express in terms of i. ã-225 + ã-49

    asked by TAINA
  126. college algebra

    I don't understand the steps for doing synthetic division in college algebra

    asked by Louis
  127. MATHEMATICS

    a) Given that A+B =120¢ª and cos A + cos B = 1/¡î2 show that cos(A+B)/2 =1/¡î2

    asked by ceasar
  128. English

    I chose the five sentences I was most doubtful about. I really hope you can check them. 1) The First World War, or the Great War as it used to be called, is rightly thought of as bringing cataclysmic changes in life, thought and social forms not only in

    asked by Henry1
  129. geometry

    How many boxes that is 5" * 4" * 3" could be placed inside a big box of 40" * 32" * 24" ??

    asked by lina
  130. algebra

    How do I solve this problem? 1/b (2b-10) = 17

    asked by Anonymous
  131. algebra

    how do I solve this equation? 1/b (2b-10)=17

    asked by Ingrid
  132. Criminology

    some states created internet registeries to publicize name of people convicted of making or selling methamphetamine. (T?F)

    asked by Stacy
  133. geometry

    If m angle 1 = 90°, what is m ADB?

    asked by terri
  134. physics

    how friction help in opposing a football

    asked by jatin
  135. statistics

    I am having trouble knowing if I add or multiply with this problem: Male Female Age 19 and under 4746 4517 Age 20 1625 1553 Age 21 1679 1627 Choose one driver at random. Find the probability that the driver is Male and 19 or under. Now, do I find the

    asked by overwhelmed
  136. Physics

    If a car travel at an average speed of 80 km per hr for 20 min, and then slowed down to an average speed of 50 km per hr over the next 15 min. How far would it travel in total?

    asked by Jennifer
  137. Math

    The notation [x ] stands for the greatest integer that is less than or equal to x. Calculate [-1,2]

    asked by Ladoo
  138. History-Civil War

    Battle of Chattanooga, last fought by Grant and Sherman together. Why was its outcome significant ?

    asked by Joanne
  139. Chemistry

    Find the [OH-] of .196 M NaOH and .262 M NH4Cl

    asked by Lilly
  140. Physics

    example that show the # part of distance and the # part of displacement can be the same for the same motion

    asked by Edward
  141. Helen

    How do you know which elements are solids, liquids, and gases at STP?

    asked by Chemistry