Questions Asked on
November 20, 2015

  1. Physics AP

    A 32 kg child goes down a straight slide inclined 38∘ above horizontal. The child is acted on by his weight, the normal force from the slide, and kinetic friction. How large is the normal force of the slide on the child?

    asked by raquel
  2. probability theory

    3 students; A, B and C, are in a swimming race. A and B have the same probability of winning and each is twice as likely to win as C. Find the probability that B or C wins the swimming race. 3) Given three boxes as follows: Box A contains 3 red, 2 white

    asked by charles
  3. Biology Check answers

    1. Which of the following correctly describes the image below?  protein Molecule RNA Molecule amino Acid carboxylic Acid 2. Glucose and fructose are monosaccharides that have the same chemical formula, C6H12O6. However, they do not react the same

    asked by Anna
  4. Chemistry-Dr.Bob

    A solution is prepared by mixing 50.0mL of 0.001 M HCl and 10.0 mL of 0.200 M NaCl. What is the molarity of chloride ions in this solution? My work: (0.001 mol/L)((0.05 L)= 0.005 mol HCl (0.200 mol/L)(0.01 L)= 0.002 mol NaCl 0.005+0.002=0.007 mol of

    asked by Sanaya
  5. Calculus

    For the vector field G⃗ =(yexy+3cos(3x+y))i⃗ +(xexy+cos(3x+y))j⃗ , find the line integral of G⃗ along the curve C from the origin along the x-axis to the point (3,0) and then counterclockwise around the circumference of the circle x2+y2=9 to the

    asked by A
  6. chemistry

    A voltaic cell consists of a standard hydrogen electrode in one half-cell and a Cu/Cu2+ half-cell. Calculate [Cu2+] when E cell is 0.070 V. NOTE::::::::::::::::::::ANSWER IN SCTIENTIFIC NOTATION PLEASE!!! thank you!

    asked by Dalton
  7. Check My Work Social Studies, Ms. Sue, Reed, Please

    1. Geographers use the five themes of geography to (2 points) study world history. organize information. study world music. measure locations.• 2. People invented flat maps because globes cannot show (2 points) names of continents. shapes of

    asked by Sam
  8. math

    A low land, 48m long and 31.5 m broad is raised to 6.5 dm. For this, earth is removed from a cuboidal hole, 27 m long and 18.2 m broad, dug by the side of the land. The depth of the hole will be? A man rows 12 km in 5 hrs against the stream, the speed of

    asked by adam
  9. History...Please Help

    PHOENIX, Sept. 20, 2012- Arizona's new immigration law takes effect this week. According to the law, police officers must check the status of anyone who may be an undocumented immigrant. Officers have the right to decide who is checked under this law. A

    asked by Samantha

    2BrF3(g)Br2(g) + 3F2(g) STANDARD ENTHALPY?

    asked by KD
  11. Statistics

    A survey of physicians in 1979 found that some doctors give a placebo to patients who complain of pain for which the physician can find no cause. If the patients' pain improves, these doctors conclude that it had no physical basis. The medical researchers

    asked by Tim

    1. There are four kinds of road signs in a certain town. The number of each kind is shown. What is the ratio of the number of school signs to the number of stop signs? signs (1 point) 9 to 10 10:9 ten over twenty-four 9:24 2. Which ratio is equivalent to

    asked by PINKIE PIE
  13. math

    A sum is invested at compound interest payable annually. The interest in two successive years was Rs 900 and Rs 981. Find the sum. If the sum of all internal angles and sum of all external angles of a regular polygon are equal, then the number of sides of

    asked by adam
  14. Financial Mathematics

    Crosby Inc. has an 11% required rate of return. It does not expect to initiate dividends for 20 years, at which it will pay $4.00 per share of dividends. At that time, Crosby expects its dividends will grow at 6% forever. What is an estimate of Crosby's

    asked by Unknown.
  15. Math

    A football is punted. Its height, H metres is given by the quadratic relation with equation: H = -5t2 + 21t, where t is the time in seconds after the punt. I tried to do this question on a test but I just ran out of time How is the easiest and quickest way

    asked by Fred
  16. Math

    A principal earns 7% per year simple interest. How long will it take for the future value to quadruple?

    asked by Merry
  17. U.S Hisotry. Please check my answers.

    Why is the United States often referred to as the melting pot? -Various cultures from many countries have "melted" together to create what America is and how American culture is defined today** -Most American citizens' native customs and traditions will

    asked by Dani
  18. math

    A supervisor finds the mean number of miles that the employees in a department live from work. He finds mc022-1.jpg and mc022-2.jpg. Which statement must be true?

    asked by kiki
  19. Algebra 2

    Perimeter is 400 ft and the area 9100 ft, give possible widths.

    asked by Help
  20. Chemistry

    Balance the redox reaction below using the half-reaction method. Bi3+(aq) + Co(s)Bi(s) + Co2+(aq)

    asked by Shahzaib

    1. There are four kinds of road signs in a certain town. The number of each kind is shown. What is the ratio of the number of school signs to the number of stop signs? signs (1 point) 9 to 10 10:9 ten over twenty-four 9:24 2. Which ratio is equivalent to

    asked by Apple Jack
  22. Statistics

    Find the critical value za/2 that corresponds to a=0.12.

    asked by tyler
  23. Physics

    At the airport, you pull a 15kg suitcase across the floor with a strap that is at an angle of 45 degrees above the horizontal. Find the normal force and the tension in the strap if the suitcase is pulled at a constant speed and the coefficient of kinetic

    asked by Alyyssa
  24. geometry

    x^2+2xy-15y^2 is this factorable?

    asked by lindsey
  25. Science

    Thomas left the White House and traveled toward the capital at an average speed of 24 km/h. Jasmine left at the same time and traveled in the opposite direction with an average speed of 55 km/h. Find the number of hours Jasmine needs to travel before they

    asked by larney
  26. English

    1. I saw tom three days ago. 2. I saw tom three days before. (Are both OK?) 3. I arrived there after three days. 4. I arrived there three days after. 5. I arrived there three days later. (Which ones are grammatical?) 6. I will meet Tom after three days. 7.

    asked by rfvv
  27. English

    Which of the following statements would not be a main theme in The Call of the Wild? a. Always trust your gut*** b. Only the strong survive c. We are driven by our ancient animal instincts d. The beast within us all will come out under the right

    asked by Kaai97
  28. Precalc Trig

    here's the question: solve for cos(2theta)=1 if you graph r= cos(2Theta) then graph r=1 you find that there are four places where the graphs intersect. however, when solved algebraically, there are two solutions which can be represented in an infinitely

    asked by Wulramm
  29. Math

    The question is: The area of a rectangle is given by the expression 8x+44y. Length is 2x+11y. What is width? I answered 4x & 4y, yet that was wrong. Can you help explain why? Thanks

    asked by Kyle
  30. English

    Please check to see if I'm correct. I have to find the complete subject and simple subject in this sentence. There was one student still taking the exam when the bell rang. student is the simple subject and there was one student the complete subject Am I

    asked by Jessie
  31. Physics

    Flywheels are large, massive wheels used to store energy. They can be spun up slowly, then the wheel's energy can be released quickly to accomplish a task that demands high power. An industrial flywheel has a 1.7 m diameter and a mass of 270 kg . Its

    asked by Jay
  32. Science

    if one third of 100g of 27% aqueous sugar solution is taken in a beaker and 10g of sugar is added to it , the concentration of the resulting solution will be?

    asked by Shivangi
  33. health

    What is an example of a dissociative drug that distorts perceptions of sight and sound? A. Cocaine B. Heroine C. Ketamine and PCP D. All of the above

    asked by jasmine
  34. science

    use the image below to think about how continental drift may have occurred. then answer the following question: according to the continental drift theory , which the following land regions should show the greatest similarities in fossil type A. east coast

    asked by science help
  35. math

    18 mil at .25 starting the meter at $2.50 is how much

    asked by monica vargas
  36. conversions

    How to calculate the square meters of a roll that is 30500 LF x 117" x 75 gauge

    asked by Kevin
  37. Algebra

    Compare the number in each exercise using an inequality symbol 1. 4/3, square root of 2 2. -7/11, -0.63 3. -22/25, -0.8

    asked by Anonymous
  38. Algebra

    1.Write an equation in slope- intercept form of the line that passes through the given point and is parallel to the graph of the given equation. (2,-2);y=-x-2 A.y=-2x B.y=2x ******** C.y=1/2x D.y=-x 2.Write an equation in slope- intercept form of the line

    asked by Mike
  39. UDC

    3no2 + h2o2 = 2hno3.

    asked by Radiya
  40. English

    1. A champion is a rich person who helps people in need. 2. A champion is a farmer who grows fresh fruit and vegetables. 3. A champion is a mother who devotes herself to caring for kids. 4. A champion is a fire fighter who does his best to extinguish the

    asked by rfvv
  41. algebra

    No. 2 alyssa has some coins in her purse consisting of pennies, nickels and dimes. She has 2 more nickels than dimes and thrice as many pennies as nickels. If the total is 0.52 dollars how many coins of each kind does she have.

    asked by Chris
  42. English

    How would Ronald Reagan's Berlin Wall speech corrupt? Also, is this quote a logical fallacy? "Yet it is here in Berlin where the wall emerges most clearly; here, cutting across your city, where the news photo and the television screen have imprinted this

    asked by Emma
  43. Physics

    A car of mass 1390 kg rests on a hydraulic lift with a piston of radius 0.26 m that is connected to a second piston of radius 0.033 m. If the car is just barely lifted off the ground, what is the force at the second piston? I Tried F1/F2 = r1^2 / r2^2 ==>

    asked by Noel
  44. Physics

    A set of density rods is designed to illustrate the concept of density. The idea is to create cylinders of equal diameters and masses, but varying lengths, to show which have the largest and smallest densities. (a) Derive a formula that will predict the

    asked by Alyssa
  45. Math

    what are the inputs of the following funtions {(-3,2),(-4,2),(8,3),(7,1)}

    asked by Taylor
  46. English

    1. When MacNeil asks, "When before human history has so much humanity collectivity surrendered so much of its leisure to one toy, one mass diversion?" What is this persuasive technique called? A. repetition B. Generalization C. a rhetorical question D. a

    asked by [._.]
  47. writing skills

    Instead,base your forecast on sensible proverbs that have stood the test of time. what correction should be made to this sentence?

    asked by Anonymous
  48. Zola business School

    Maths Literacy,Tourism,Business Studies,Economics Iam in grade9 next years I want to choose these subjects and I also want to know the careers are available for those subjects that you work in a office

    asked by Ambesiwe
  49. chemistry

    According to the reaction below, how many grams of lithium oxide could be produced from 3.1 moles LiCl?

    asked by chemo
  50. chemistry

    According to the reaction below, how many grams of lithium oxide could be produced from 3.1 moles LiCl? 4 LiCl + O2 → 2 Li2O + 2 Cl2

    asked by chemo
  51. Math

    Given that an equation of the form f(x) = x^n has n solutions, and that the solutions are equally spaced at a given radius in the complex plane, discuss why complex solutions must occur in conjugate pairs when .

    asked by April
  52. Math

    Simplify and express in scientific notation (2.75x10^9)(0.5x10^5) (2.75x0.5)(10^9×10^5) =1.375×10^14

    asked by Cody
  53. Physics 12 college preparation

    Find the work done by a traveller carrying a suitcase of mass 8.2 kg by pulling up on it when walking forward for a distance of 120 m . Explain your reasoning

    asked by Ahmed
  54. World History

    Leaders in the industrialized world see booming populations in the least industrialized nations as a threat to? a= the continued expansion of their own nations b= technologymadvancement c= the global balance of power d= the existing food supply

    asked by Steve
  55. Science

    I need an idea for an essay about muscles

    asked by PeculiarUnicorns
  56. math

    for every 12 people crossing the street, 7 of them used the pedestrian lane and the rest did not. if 48 people crossed the street, how many did not cross in the pedestrian lane? Hi Steve, the choices of answers to this question are the following: a)28;

    asked by tante
  57. personal trainer

    Chris is a high school student and is eager to gain some muscle mass. He eats a diet that consists primarily of processed foods (fast food, cafeteria, etc.) Chris is anxious to get stronger so that he can go out for the wrestling team. CLI

    asked by Ana smith
  58. Math help please

    Please help I'm failing Which of the following is a rational number Pie Square root 3 Square root 2 1.3*****

    asked by Mysterydude
  59. Biology

    6. The gene for a large single eyeball is coded by the gene sequence TTCGCTGAA. Let’s go through transcription… DNA Strand- T-T-C-G-C-T-G-A-A mRNA Strand- _____________________________ 7. Now, let’s look at the gene for green body color, which is

    asked by Anonymous
  60. Government

    What is the importance of selective incorporation

    asked by Anonymous
  61. World History

    1.) INDUSTRIAL REVOLUTION: Why is there such a massive gap in the world today between rich and poor nations? 2.) IMPERIALISM: How does imperialism continue to affect the world we live in? 3.) WORLD WAR I: How did World War I and new scientific advances

    asked by Ellie
  62. Physics

    A builder wants to build a corbeled arch, based on the principle of stability, what minimum number of bricks, each 0.30 m long, is needed if the arch is to span 1.0 m? Be sure to include in the total number of bricks one brick on top and one brick at the

    asked by Anonymous2.0
  63. math

    Two truck drivers leave the same rest stop at the same time to travel in opposite directions.One travel at an average rate of 52 mph and the other average 56 mph.In how many hours will they be 72 miles apart

    asked by nisha
  64. Calculus

    Solve the initial value problem 2y" + 5y' - 3y = 0 y(0) =7, y'(0) = 7 Can someone please help. The answer I came up with is 35 exp(-x) - 28 exp(-3x/2), but my answer is wrong.

    asked by Latoya
  65. Calculus

    Find the solution t the differential equation dz/dt = 2te^z that passes through the origin. My answer is -In (1-t^2), but my answer is populating as incorrect. Can someone help please?

    asked by Latoya
  66. trinometry

    consider the polar equation r=7 cos(θ+ pi divided by 4) A) change the equation to rectangular coordinates. B) by completing the square, obtain the Standard form of this well-known equation. I NEED HELP WITH THIS PROBLEM I DON'T KNOW WHERE TO START.

    asked by jojo
  67. Physics

    A baseball player dives into third base with a speed of 7.90 m/s. If the coefficient of friction between the player and the ground is 0.41, how far does the player slide before coming to rest?

    asked by Alyyssa
  68. science

    a trait developed through learning is a ?

    asked by lola
  69. English

    The author of The Call of the Wild shifts the setting from California to Alaska in order to a. depict how Buck becomes a tough survivor b. illustrates how money can change a character's perspective c. show John Thornton's values remain unchanged even under

    asked by Kaai97
  70. English

    "Dat Buck for sure learn queek as anyt'ing" is an example of what? a. dialect*** b. exposition c. point of view d. theme

    asked by Kaai97
  71. math

    The cost price of 8 books is equal to the selling price of 6 books. Find the gain or loss per cent. Ashis purchases eggs at the rate of Rs 90 for 150 eggs and sells them at Rs 85 per hundred. Find his gain or loss per cent. Pls pls help***

    asked by adam
  72. US Legal system and branches of government

    write 200 word on the three executive offices which affect the health information profession.

    asked by Elizabeth
  73. US Legal system and branches of government

    consider the definition of private law and public law. Discuss the difference between these two sources of law. support with example.

    asked by Elizabeth
  74. math

    Larry borrowed $800.00 at 6% for one in a half years?Explain and solve the problem.

    asked by Eilundra
  75. English

    Which of the following statements would not be a main theme in The Call of the Wild? a. Always trust your gut*** b. Only the strong survive c. We are driven by our ancient animal instincts d. The beast within us all will come out under the right

    asked by Kaai97
  76. History

    1.As a result of the French and Indian War, ___ claimed all land west of the Mississippi River, and ___ gained control of all land east of it. a. Indians; Britain b. Spain; France c. France; Indians d. Spain; Britain If you have any other answers to this

    asked by Rachel
  77. math

    Suppose payments were made at the end of each month into an ordinary annuity earning interest at the rate of 3.5%/year compounded monthly. If the future value of the annuity after 12 years is $50,000, what was the size of each payment? (Round your answer

    asked by phalyn
  78. Physics

    Four bricks are to be stacked at the edge of a table, each brick overhanging the one below it, so that the top brick extends as far as possible beyond the edge of the table. *The construction in stable equilibrium, bricks must extend no more than (starting

    asked by Anonymous2.0
  79. Math 1350

    Mrs. Smith's classroom can hold at the most 30 students. Her first period class had 4 boys for every 3 girls. When 3 boys and 1 girl were added to the class, the new ratio became 3 boys to 2 girls. How many total students are now in the class? Show all

    asked by Ne Ne
  80. Math

    Over the past week, 34 baby boys were born at the hospital. This was 54% of all babies born. How many girls were born over the past week?

    asked by Ken
  81. Math 1350

    About eleven-twelveths of a state park is covered by trees, one-eighteenth is covered by a lake, and the rest is covered by open fields. What part of the state park is open fields?

    asked by Ne Ne
  82. Physics

    If a 180 pound body is dropped from an airplane 5 miles (26400 ft.) up: a/ how long would it take for the body to reach the ground? b/ what would be the maximum speed the body would attain in miles per hour? Close approximations are all that are required

    asked by Bill
  83. General Chemistry

    Calculate the standard heat of formation of acetaldehyde , 2C(s) + 2 H2(g) +1/2 O2 (g) ---> CH3CHO(g) given the following information? CH3CHO(g) + 5/2 O2 (g) --> 2H2O(l) + 2 CO2(g) DeltaH rxn =-1194 KJ H2(g)+ 1/2 O2 (g) --> H2O (l) DeltaH rxn =-286 KJ/mol

    asked by ChemLove
  84. Math

    Rachel will make juice drink by mixing sugar, pineapple juice, and water in the ratio of 2:5:7 cups. If she uses 20 cups of pineapple juice, she has to mix ____ cups of sugar and ____ cups of water to the juice

    asked by Ceena
  85. Math 1350

    Mrs. Jones has a prime number of children in her class. When she divides the children into teams of 7, one team has 6. When she divides the children into teams of 6, one team has 5. How many children are in the class?

    asked by Ne Ne
  86. Science

    Please someone help me figure this one out with three reasons. A group of researchers from a local lab are trying to get funding for a research study to determine if the color blue is better than the color green. They have written a proposal and submitted

    asked by Mark
  87. English

    1. He keeps many goats. 2. He has many goats. 3. He raises many goats. 4. He grows many goats. ============= Doe they have the same meaning? Which verbs are suitable?

    asked by rfvv
  88. English

    The author of The Call of the Wild shifts the setting from California to Alaska in order to a. depict how Buck becomes a tough survivor b. illustrates how money can change a character's perspective c. show John Thornton's values remain unchanged even under

    asked by Kaai97
  89. functions

    Andrew is 5 years older than Tim. Tim is aged 19. Write an equation for x, where x is the age of Andrew. Solve the equation.

    asked by john
  90. Kaah

    A gun of mass 8kg fires a bullet with a mass 25g at velocity of 320 metre per second what is th recoil velocity of the gun?

    asked by Mustafa
  91. English

    1. He shook hands with the person. 2. Tom made friends with Bill. 3. You have to change cars at the intersection. 4. He is on good terms with others. 5. He wanted to exchange seats with Bill. ======== Are they all grammatical?

    asked by rfvv
  92. Calc

    A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.3 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 13 cm. (Note the answer is a positive number).

    asked by Cc
  93. Behavioral Statistics Help!

    There are also potential problems associated with interpreting the results of a paired t-test. Imagine you are interested in determining whether an employee of a company performs better with or without a bonus. What are some issues that could affect the

    asked by slomomo
  94. Social Studies

    Need a question checked: I think its C: Leftists rebels in Colombia would be most likely to A.scarcity of natural resources. B.undemocratic forms of governance. C.economic emphasis on mining. D.nationalization of industry.

    asked by Kardan
  95. math

    Is there any value of x with the property that x < x - 1 ? Explain your reasoning. THANK YOU!

    asked by kimie
  96. English

    As for Mattie's third wish, Oprah Winfrey asked Mattie to appear on her show. ======== What can we use instead of 'As for'?

    asked by rfvv
  97. English

    1. He appeared on the stage. 2. He disappeared from the stage. 3. He disappeared on the stage. ======== What is the opposite expression of #1?

    asked by rfvv
  98. Chemistry

    NaN3--->Na+N2 How many moles of Na are produced if 3.5 moles NaN3 react?

    asked by Mathew
  99. English

    1. He lived a happy life. 2. He lived happily. 3. He lived a long life. 4. He lived long/longly. 5. He lived a short life. 6. He lived shortly. ============= #1 mean #2,right? What about the other set?

    asked by rfvv
  100. physics

    why water from soil does not evaporate?

    asked by heat
  101. math

    Joseph used the problem-solving strategy Work Backward to solve the inequality 2n+5

    asked by kimie
  102. Physics

    A 180 pound body is dropped from a helicopter 5 miles (26400 ft.) up - - what maximum speed would the body attain, in miles per hour, before hitting the ground? Disregard gravity, air density, etc. factors, a very rough approximation is all that is needed.

    asked by Bill

    8. Convert the map scale to a unit rate. How many inches represent one mile? Show your work. Interpret the meaning of the unit rate

    asked by LOL
  104. math packet

    Solve this equation for x. 0.5(5-7x) = 8-(4x+6)

    asked by charlie
  105. Finance

    Life expectancy has risen to 78.3 years according to the Centers of Disease Control and Prevention. The average Roman’s lifespan 2,000 years ago was 22 years. In 1900, a person was expected to live 47.3 years. In 2013, assume you are a 42-year-old

    asked by Spork
  106. science help

    Which of the following is a massive star that has reached the end of its stellar evolution? Neutron star Red giant Stellar nebula White dwarf is it c

    asked by Oscar
  107. science

    calculate the heat f iodine vapours & solid are 0.031 & 0.055 cal/g respectively. If heat of sublimation f iodine is 24 cal/ g at 200°C .wat is its value at 260°C??

    asked by sapna
  108. Maths

    David took out all his coins in his piggy bank. They were made up of only fifty cents and twenty cents coin. There are 12 fifty cents coins more than twenty cents coin. The total value of fifty cents coin is 21$ more than the total value of twenty cents

    asked by Archana
  109. Language Art

    3.)Why does the author organize "The Season's Curmudgeon Sees the light "as she does?(1 Points) A.)To contrast fall weddings & song with spring weddings & song B.)To contrast reading with gardening C.)To show how her feelings about spring have changed

    asked by YRN DJ
  110. Maths

    how to draw triangle having area 0sq cm

    asked by pratik
  111. Math

    The percent of fat calories that a person in America consumes each day is normally distributed with a mean of about 36 and a standard deviation of about 10. Suppose that 16 individuals are randomly chosen. Is it appropriate to use the normal approximation

    asked by Brandy
  112. maths

    How many Sq metres is there in a area of 200cm x195cm x10cm deep?

    asked by Graham
  113. physics

    an object of height 5 cm is placed at a distance of 2m in front of a mirror and its image is obtained on a screen.Find the distance of screen from the mirror,nature of the mirror and its focal length.

    asked by Anonymous
  114. math

    Hi Dan, kindly provide detail equation how to arrived to your answer. 21 boys, 21 girls. 7:5 - 6 girsl is 21 boys to 15 girls [think -6]

    asked by tante
  115. science

    A boy complains of stomach pain to his mother. Unable to resolve the issue herself, she takes the boy to the doctor. Which of the following might be a good hypothesis for the stomach pain?The boy fell and hurt his stomach. The boy has an infection and

    asked by john
  116. columbia high

    You have 160 boxes of cookies. In each case you can pack 8 boxes of cookies.How many cases would be filled from these boxes of cookies?

    asked by johnnie
  117. College pre calc

    Use bionomial formula to find the coefficient of the t^2 m^8 term in the expansion of (3t+m)^10. I got so far this 10C8 x 3^2 x t^2 x m^8 It tell me the next step is here =45 x 9 x t^2 x m^8 where did the 45 come from?? It doesn't explain that to me! The

    asked by Feather
  118. World History

    Information on Croatia's military strength

    asked by anonymous
  119. physics

    what is the acceleration of a car going 25m/s on a cloverleaf with a radius of 45 m?

    asked by kelly