Questions Asked on
October 27, 2012

  1. Chemistry

    NaI(aq)+Hg2(C2H3O2)2(aq)--> Express your answer as a chemical equation. Enter NOREACTION if no reaction occurs. Identify all of the phases in your answer. I need help! Someone please help..

    asked by Lalo
  2. calculus

    c)The price (in dollars) p and the quantity demanded q are related by the equation: p2+2q2=1100. If R is revenue, dR/dt can be expressed by the following equation: dR/dt=A(dp/dt), where A is a function of just q. i)Find A. ii)Find dR/dt when q=20 and

    asked by chamberlain
  3. calculus

    The volume V of a cube with sides of length x in. is changing with respect to time. At a certain instant of time, the sides of the cube are 6 in. long and increasing at the rate of 0.3 in./sec. How fast is the volume of the cube changing at that instant of

    asked by Anonymous
  4. college math

    3.15 A bank branch located in a commercial district of a city has developed an improved process for A bank branch located in a commercial district of a city has developed an improved process for serving customers during the noon-to-1:00 p.m. lunch period.

    asked by dannie0913
  5. Physics

    A 35 kg box rest in the bed of a truck. The coefficient of static friction between the box and the truck bed is 0.30 and the coefficient of friction of kinetic friction is 0.10. A) Calculate the maximum acceleration the truck can have before the box slides

    asked by Sammy
  6. geometry

    Each base of an isosceles triangle measures 42 degrees, 30'. The base is 14.6 meters long. a. Find the length of a leg of the triangle b. Find the altitude of the triangle c. What is the area of the triangle?

    asked by Sofia
  7. physics

    Piston 1 has a diameter of 0.643 cm. Piston 2 has a diameter of 4.59 cm. In the absence of friction, determine the force required on piston 1 necessary to support an object, m, with weight 1151 N. (Neglect the height difference between the bottom of the

    asked by Emily
  8. physics-mechanics-collisions,momentum, impulse

    You are at the controls of a particle accelerator, sending a beam of 2.40×107 protons (mass ) at a gas target of an unknown element. Your detector tells you that some protons bounce straight back after a collision with one of the nuclei of the unknown

    asked by HANNE
  9. Physics HELP!

    A coin rests 18.0 cm from the center of a turntable. The coefficient of static friction between the coin and turntable surface is 0.420. The turntable starts from rest at t = 0 and rotates with a constant angular acceleration of 0.650 rad/s2. (a) After

    asked by Anonymous
  10. tri

    Points A and B are separated by a lake. To find the distance between them, a surveyor locates a point C on land such that ÐCAB = 48.8°. He also measures CA as 318 ft and CB as 523 ft. Find the distance between A and B. Please round the answer to the

    asked by glenna
  11. Algebra

    The table shows men's shoe sizes in the United States and the corresponding European shoe sizes. Let y = f(x)represent the function that gives the men's European shoe size in terms of x, the men's U.S. size. Men's U.S. shoe size, Men's European shoe size 8

    asked by Kris
  12. Physics

    An archer wishes to shoot an arrow at a target at eye level a distance of 45.0 m away. If the initial speed imparted to the arrow is 68.2 m/s, what angle should the arrow make with the horizontal as it is being shot?

    asked by Melanie
  13. Algebra Grade 7

    Point S is the midpoint of RT. compplete the statement: ST = 11 in., RT = __

    asked by rawr... im a dinosaur.... rawr
  14. Physics- Elena please help!

    Part of a roller-coaster ride involves coasting down an incline and entering a loop 30.0 m in diameter. For safety considerations, the roller coasters speed at the top of the loop must be such that the force of the seat on a rider is equal in magnitude to

    asked by Mel
  15. management science

    Kim Davis has decided to purchase a cellular phone, but she is unsure about which rate plan to select. The "regular" plan charges a fixed fee of $55 per month for 1,000 minutes of airtime plus $0.33 per minute for any time over 1,000 minutes. The

    asked by Lisa
  16. geology

    what is the Sample Locality Age (Million years)in Granite: Scottish Highlands, Gabbro: Sudbury Canada and Gneiss: Greenland?

    asked by john
  17. physics

    A railroad car of mass 2.7 104 kg moving at 3.50 m/s collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.20 m/s. (a) What is the speed of the three coupled cars after the

    asked by heather
  18. Physics

    A car of mass 1100 kg starts from rest at sea level and climbs a hill of altitude 50 m. At the top of the hill the car has a speed of 25 m/s. From the top of the hill the driver turns off the engine and coasts down to an altitude of 15 m. Assume the

    asked by Sara
  19. physics

    A long thin rod is cut into two pieces, one being as long as the other. To the midpoint of piece A, piece B is attached perpendicularly, in order to form the inverted "T" shown in the figure. The application of a net external torque causes this object to

    asked by jordan
  20. PHYSICS!

    In scuba diving, a regulator is used so that the pressure of the air the diver breathes is close to that of the ambient water. A reckless swimmer decides to use a hose sticking out of the surface to breathe underwater while diving in a lake. When the air

    asked by Emily
  21. Physics

    A railroad car (m=3000 kg) is coasting along a level track with an initial speed of 22 m/s. A load of coal is then dropped into the car as sketched in the figure below. (a) What are the velocities of the car and the coal before the collision along the x

    asked by David
  22. Physics

    To move a large crate across a rough floor, you push on it with a force F at an angle of 21° below the horizontal, as shown in the figure. Find the force necessary to start the crate moving, given that the mass of the crate is m = 36 kg and the

    asked by Gia
  23. math

    a fair of die is tossed 180 times. Find the probability P that the face 6 will appear between 29 and 32 times inclusive?

    asked by vilma
  24. physics

    An evacuated spherical diving bell containing a camera is in the ocean at a depth of 107 m. It has a flat, transparent, circular port with a diameter of 10.5 cm. Find the magnitude of the total force on the port. For the density of seawater use 1025 kg/m3.

    asked by Emily
  25. Chemistry Stoichiometry

    Sulfuric acid can dissolve aluminum metal according to the following reaction. Suppose you wanted to dissolve an aluminum block with a mass of 25.7 . How many grams of H2 gas would be produced by the complete reaction of the aluminum block?

    asked by Brianna
  26. math problem

    Two large containers each contain the same amount of juice. When 54oz. of the first container are poured into the second container, the second container has 4 times as much juice as the first container. How many ounces of juice did the first container

    asked by Bob
  27. Economics

    Would Wells Fargo's market structure be Monopolistic competition?

    asked by Brenda
  28. Physics URGENT!!!

    A coin rests 18.0 cm from the center of a turntable. The coefficient of static friction between the coin and turntable surface is 0.420. The turntable starts from rest at t = 0 and rotates with a constant angular acceleration of 0.650 rad/s2. (a) After

    asked by Anonymous
  29. Physics

    The particles in the figure below (m1=1.6 kg and m2=3.5 kg) undergo an elastic collision in one dimension. Their velocities before the collision are v1i=12 m/s and v2i=-7.5 m/s. Find the velocities of the two particles after the collision. (Indicate the

    asked by David
  30. Pre-Algebra

    Write the expression for a number used as a factor fifteen times being multiplied by the same number used as a factor ten times. Then, write the product as one power. Thanks, Michaela

    asked by Michaela
  31. math

    The following is a set of data from a sample of n = 5: 7 4 9 8 The following is a set of data from a sample of n = 5: 7 4 9 8 2 a. Compute the mean, median, and mode. b. Compute the range, variance, standard deviation, and coefficient of variation. c.

    asked by dannie0913
  32. Health

    Gonorrhea is spread through contact with the ________. A. Anus, !@#$%^&, Mouth, Skin B. !@#$%^&, Anus, Mouth, !@#$%^& C. !@#$%^&, Skin, !@#$%^&, Anus D. Mouth, !@#$%^&, !@#$%^&, Fingers I think it's B?

    asked by Marissa
  33. Algebra Grade 7

    How are a segment bisector and midpoint of a segment related?

    asked by rawr... im a dinosaur.... rawr
  34. chemistry

    if 3.0 moles of nitrogen gas are collected in a 35.0 liter container at 20 C what would be the the pressure exerted on the container in atmospheres

    asked by glenn
  35. Physics

    To move a large crate across a rough floor, you push on it with a force F at an angle of 21° below the horizontal, as shown in the figure. Find the force necessary to start the crate moving, given that the mass of the crate is m = 29 kg and the

    asked by HELP PLEASE
  36. Accounting

    Which of the following would be most likely to lead to a higher level of interest rates in the economy? Answer a. Corporations step up their expansion plans and thus increase their demand for capital. b. Households start saving a larger percentage of their

    asked by Anonymous
  37. organic chemistry

    Arrange the following compounds in order of increasing ease of elution from an activated alumina column: a. Cyclohexane b. Butyl acetate c. Benzoic acid d. M-xylene e. Decyl alcohol

    asked by Susan
  38. financial accounting

    The lake theater opened on april 1.all facilities were completed on march 31. During april,the following events and transactions occured. Apr.2 paid film rental of $800 on first movie. 3 ordered two additional films at $1,000 each. 10 made $2,000 payment

    asked by mary
  39. math grade 12

    A open-topped box can be created by cutting congruent squares from each of the four corners of a piece of cardboard that has dimensions of 20cm by 30cm and folding up the sides. Derermine the dimensions of the square that must be cut to create a box with a

    asked by karen
  40. Physics

    You have a boat that is capable of moving at 14.5 m/s through still water. You wish to cross a river that flows due north at 5.3 m/s. At what numerical compass heading must you pilot your boat so that you will reach a destination that is due west of your

    asked by Anonymous
  41. Math problem

    Mrs. Jones owns 4/7 of the stock in a small business and Mrs.Brown owns the rest. Mrs. smith agrees to give $21,000 in exchange for 1/3 of the stock. The $21,000is to be divided between Mrs. jones and Mrs. Brown so that all three will now have equal share

    asked by Bob
  42. physics please help??

    I know how to do this problem, but I am having a difficult time figuring out the distance . I thought that from wire 1 to P2 the distance is 45 cm, and the distance from wire 2 to the p2 the distance is 35 cm. However, I believe I am wrong, can someone

    asked by henry
  43. applied algebra

    An artifact was found and tested for its carbon-14 content. If 74% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon-14 has a half-life of 5,730 years. 1 yr

    asked by Anonymous
  44. Statistics

    The manager of the customer service division of a consumer electronics company was interested in determining whether customers who had purchased a DVD player over the past 12 months were satisfied with their products. Using the warranty cards submitted

    asked by Patrice
  45. Algebra

    Triangle ABC has coordinates A(1, 4); B(3, –2); and C(4, 2). Find the coordinates of the image A'B'C' after a reflection over the x-axis? I have never done one where the triangle is already over the x-axis...do we flip it up or down... Please help me

    asked by Deborah
  46. Physics

    The soccer goal is 32.26 m in front of a soccer player. She kicks the ball giving it a speed of 20.62 m/s at an angle of 28.29 degrees from the horizontal. If the goalie is standing exactly in front of the net, find the speed of the ball just as it reaches

    asked by Anonymous
  47. Physics

    A block is resting at the top of a rough incline with coefficients of kinetic and static friction of 0.25 and 0.45 respectively. The angle of the incline is gradually increased until the block begins to slip. Calculate the angle that the block begins to

    asked by Carol
  48. physics

    A computer is reading data from a rotating CD-ROM. At a point that is 0.0382 m from the center of the disk, the centripetal acceleration is 118 m/s2. What is the centripetal acceleration at a point that is 0.0791 m from the center of the disc?

    asked by Anonymous
  49. Physics URGENT!!!

    A massless spring of constant k =84.8 N/m is fixed on the left side of a level track. A block of mass m = 0.5 kg is pressed against the spring and compresses it a distance d, as in the figure below. The block (initially at rest) is then released and

    asked by Mel
  50. math problem

    In the multiplication probelem at the right,A,B,C represent different non-zero digits. Each time the same letter appears it represents the same digit. Find the 2 numbers represnted by AA and BC.(0 is zero). A A x B C ------ B B O A A ----- 6 6 0

    asked by Bob
  51. Alegebra

    what is one-fourth the sum of n and 2 equals one

    asked by Anonymous
  52. Physics

    A fox fleeing from a hunter encounters a 0.665 m tall fence and attempts to jump it. The fox jumps with an initial velocity of 7.05 m/s at an angle of 45.0°, beginning the jump 2.17 m from the fence. By how much does the fox clear the fence? Treat the fox

    asked by Melanie
  53. Grand Canyon University

    Show that 480 W of power is expended by a weightlifter when lifting a 60-kg barbell a vertical distance of 1.2 m in a time interval of 1.5 s.

    asked by Cecilia
  54. maths magic

    There are A,B,C,D at one end of the bridge.they have to cross within 17 minutes.only 2 can cross the bridge at atime .since it is very dark one has to come back to show the light and its said that A can cross the bridge in 1 min ,B can cross at 3min ,C in

    asked by nanbala
  55. Algebra

    If a number is not a rational number then it is a? 1.an integer 2.an irrational # 3.a whole # 4.a radical I believe its irrational but that seems to easy? Please help

    asked by Deborah
  56. geography

    what happens the the mass of moist air with the type of precipitation relief? what happens the the mass of moist air with the type of precipitation frontal? what happens the the mass of moist air with the type of precipitation convectional?

    asked by zackary
  57. Physics- PLEASE HELP

    A luggage carousel at an airport has the form of a section of a large cone, steadily rotating about its vertical axis. Its metallic surface slopes downward toward the outside, making an angle of 21.0° with the horizontal. A 37.0 kg piece of luggage is

    asked by Shannon
  58. Calculus

    Let R be the region bounded by y=6sin((pi/2)x), y=6(x-2)^2, y=3x+3 containing the point (2,6). Find the area of R, find the volume of R rotated about the x-axis, find the volume of R rotated about the y-axis, and Suppose R is the base of a shape in which

    asked by Charmaine
  59. biology

    If your ears were larger, you would: a. be able to hear sounds at lower amplitude (softer sounds) b. lose the ability to hear low amplitude high frequency sounds c. not experience any difference in your hearing ability d. none of the above

    asked by ashley
  60. physics

    Calculate the magnitude of the electrostatic force the two down quarks inside a neutron exert on each other if they are separated by a distance of 0.71 fm.

    asked by melike
  61. physics

    An airplane traveling 1007 m above the ocean at 150 km/h is going to drop a box of supplies to shipwrecked victims below. (a) How many seconds before the plane is directly overhead should the box be dropped?(b) What is the horizontal distance between the

    asked by denise
  62. Physics

    How do you know how long you need to draw the vectors? Like if the gravity vector line is longer than the normal force, or if the friction line is longer than the applied force or whatever..?

    asked by Sammy
  63. math problem

    In the multiplication at the right,A,B,C represent different non-zero digits. each time the same letter appears it presents the same digit. Find the 2 numbers represnted by AA and BC.(0is zero). A A x B C ------ B B O A A ------- 6 6 0

    asked by Bob
  64. Accounting

    Which of the following would be most likely to lead to a higher level of interest rates in the economy? Answer a. Corporations step up their expansion plans and thus increase their demand for capital. b. Households start saving a larger percentage of their

    asked by Anonymous
  65. Personal Finance

    determining the future value of education jennyfranklin estimates that as a result of completeing her naster's degree she will earn $7,000 a year more for the next 40 years what would be the total amountof these additional earnings?

    asked by Tammy
  66. physics

    In co2 laser, the co2 vibrates when it collides with nitrogen atoms instead of getting excited to next level.Why? why is this vibration after collision is not seen in Helium-neon laser?please explain me

    asked by nanbala
  67. Math

    The product of two consecutive postive even numbers is 1088. What are the numbers.

    asked by Linda
  68. Math 9

    Please help me on this question. Thanks! One pole measured 1.35m and the smaller pole measured 0.83m. They needed to be tied together. They were attached by overlapping the ends and tying them together. The length of the overlap was 12cm. What is the total

    asked by Leah
  69. geometry

    graph ABCD...is it a square...A(-3,1) B(1,4)C(4,0)D(0,-3) JUSTIFY YOUR ANSWER AND SHOW WORK..THANK YOU

    asked by Mae
  70. Math

    How do you graph the line, y=3x+8.

    asked by Linda
  71. Math

    1)one number is four more than a second number. Twice the second is three more than the first. Find the numbers. 2)four times one number minus a second is 11, and the sum of the numbers is 14. Find the numbers.

    asked by CJ
  72. Science Asap

    As a substance is heated from its liquid phase to its gas phase, what happens to the spacing and speed of its molecules? Thank You for helping.

    asked by ST
  73. math

    t(seconds) 0 1 2 3 4 5 s(feet) 0 10 32 70 119 178 Find the average velocity for the time period beginning when t=2 and lasting 1.3s Estimate the instantaneous velocity when t=2

    asked by Helen
  74. Spanish help!

    Complete with ser. Puerto Rico y la Republica Dominicana _____ dos islas en el mar Caribe.

    asked by Unknown
  75. Physics HELP!

    A toy race car starts from rest on a circular track of radius 4.30 m. The cars speed increases at the constant rate of 8.80 m/s2. At the point where the magnitudes of the centripetal and tangential accelerations are equal, determine (a) the speed of the

    asked by Mel
  76. math

    Two swimmers competed in a 20 mile race. Person 1 swam at a rate of 4 miles every 25 minutes. Person 2 swam at a rate of 3 miles every 20 minutes, Who won and what was each swimmers time?

    asked by lynn
  77. statistics

    determine whether the following formula is a probability distribution P(X)=X/20 for X=1,4,7 AND P(X)=X+0.1 for X=0.24,0.26,0.15

    asked by Kim
  78. math

    2poles are placed vertically in a pool.one third of the longer pole and two fifths of the shorter pole is under water.if the difference in leng 42 cm,how deep is the pool?th

    asked by wan
  79. chem

    why is the ring of ammonium chloride closer to the hydrochloric acid end in the ring of gases experiment? i can say is that NH4Cl has greater amount of molecular weight than ammonium. is it right. pls help

    asked by Draden
  80. Math

    How to d/dx y= (9+((x-9)/6)^1/5)^1/2 ? Hope u can give me the way how to calculate it. ^^ I got 1/60 ((x-9)/6) ^ (-9/10), i think my answer is wrong because i check at wolfram website the ans is differrent from mine (sorry i didn't write the ans bcus the

    asked by Ifi
  81. MT

    She had some nausea and vomiting, also she had profound diarrhea.

    asked by Anonymous
  82. Goverment

    What is a bias paragraph?

    asked by Matilda
  83. Spanish help!

    Y quienes _____? Complete with ser. THNX!!!

    asked by Unknown
  84. biology

    When the stereocilia of a hair cell in the inner ear bends, it causes: a. potassium ions to enter the hair cell b. you to hear low frequency sounds c. chloride ions to leave the basilar membrane d. all of the above

    asked by ashley
  85. Art 101 college

    Explain how Florence reflects the ideals of the dominant city-state and how some of the geographical, economical, social, and artistic forces shape this ideal. Use one example from Gardner’s Art through the Ages and one example from the Internet.

    asked by Michelle
  86. College math

    -15-√-18/33

    asked by Jackie
  87. Physics

    A bullet of mass m=0.060 kg hits a 5.0 kg block with an initial speed of 225 m/s. The block is connected to a spring that is attached to a wall. The friction between the block and the table is negligible. Upon impact, the bullet bounces back from the box

    asked by Rob
  88. math

    i don't know but the question is to circle the object that is heavier(shoe,sock,feather,marble,brick and tape measure)i know a brick,and the tape measure is heavy but i'm not sure about the shoe and the marble

    asked by timmy
  89. Math

    dx/dy cos x sin y + x^5 = 11 i got dx/dy= (-cos x cos y)/ (-sin x sin y +5x^4) But the wolfram got (1- cos x cos y)/(5x^4-sin y sin x), where is the 1 come from?

    asked by Ifi
  90. computer science

    Write a method main that demonstrates class Employee's capabilities by creating two Employee objects. Initialize one of the objects (give values to the instance variables) using the constructor and display its instance variable values through the display

    asked by sim
  91. bio

    the genotype of a particular autosomal trait refers to: a) the appearance of that trait b)the allele responsible for the trait c)the 2 alleles an individual has fot that trait d) one of the genes of a chromosomal trait

    asked by lyly
  92. math help

    1/3 . 7 help me plss is it gonna be 7/1 or 1/7

    asked by help me
  93. gts

    examined 200 primary oocytes, in how many would you expect to see a chiasma between the two loci ?

    asked by asem
  94. calculus

    lim (x^(2)-4)/(x-2) x->2 lim x->1 (x+1)/(x-1)

    asked by Kelly
  95. math

    2/3x4 in simplest form

    asked by Anonymous
  96. calculus (math)

    Simplify exactly log_2 1/16

    asked by Kyle
  97. math

    7 less than 3 times x

    asked by kelsey
  98. College math

    (-2+6i)+(4-i)

    asked by Jackie
  99. stat

    AluminiCorp is a major producer of aluminum cans that produces 40 billion aluminum cans every year. You work as a quality control officer for AluminiCorp, and are responsible for ensuring that the aluminum cans produced meet certain specifications. Each

    asked by Anonymous
  100. math help

    1/4 divided by 3/8 pls help me im confuss i forgot the ste pls explain

    asked by Anonymous
  101. Chemistry

    I did a melting point test for menthol and the question is asking what type of compound is demonstrated and the answer should include inter molecular forces I also need to explain this same question for a solubility in water test and solubility in oil test

    asked by Anonymous
  102. Math

    A local animal shelter had four more than six times as many adult cats as kittens. After eight of the kittens were adopted, the shelter had four fewer than eight times as many adult cats as kittens. How many adult cats are at the shelter?

    asked by Chris
  103. Calculus

    lim (2Q^(2)+5)/(q+2) q->2 lim |y+3| y->-3

    asked by Charlie
  104. calculus

    Write a formula for f^-1 (x) if f(x) = (x+5)/(3x-4) and state the domain of F^-1

    asked by Grace
  105. geometry

    graph ABCD...is it a square...A(-3,1) B(1,4)C(4,0)D(0,-3) JUSTIFY YOUR ANSWER AND SHOW WORK..THANK YOU

    asked by Mae
  106. Physics

    HELP ! Two acrobats, each of 60.0 kg, launch themselves together from a swing holdings hands. Their velocity at launch was 8.00 m/s and the angle of their initial velocity relative to the horizontal was 46.0 degrees upwards. At the top of their trajectory,

    asked by Hau
  107. math

    5 people took turns to sit in the two seats so that each person had equal time to sit.if the total took 1 hour 10 minutes,how long did each person have the seat for?

    asked by wan
  108. Chemistry

    0.3 grams NaOH dissolved in 2.5litres. How many moles?

    asked by Adrian
  109. calculus

    lim x^(3)+x x->2 Suppose x^(2)+1 is greater than equal to f(x) is greater than equal to 4x-3 for all x. Compute lim f(x) x->2

    asked by Emma
  110. math

    Simplify each of the following exactly: (8^(-1000) sqr2^10000)/16^500 log_(8) 2

    asked by Remy
  111. math

    why does 3/10-2/11 =13/110?

    asked by lesile
  112. chem

    How Graham's Law can be used to predict the ring of gases that will occur in the glas tube.

    asked by Draden
  113. Python - Tkinter

    how can I make my program to freeze in certain conditions .. unless I click "r" it will continue to work ?

    asked by mema
  114. Math - 10th grade

    Simplify: (1-i)^3 Here's how I break it down using the formula (x-y)^3 but I just don't know how to get to the final answer. Please help. = 1-3i+3(i)^2-(i)^3 Thank you

    asked by yengiang
  115. Science

    Fill in the blanks: 1. Minerals are classified in many ways, including hardness, streak, and _______ properties. 2. There are some minerals that are valued as _______ because of their hardness, color, and beauty. 3. Non-silicates make up less than 10% of

    asked by Unknown
  116. College math

    3/4+i

    asked by Jackie
  117. College math

    √-81- √-144

    asked by Jackie
  118. College math

    (-2+√-11)^2

    asked by Jackie
  119. College math

    (2-3i)(3+5i)

    asked by Jackie
  120. math

    two numbers have a sum of 600,if the smaller number is divided into the larger number,the quotient is 3 and the remainder is 24.what is the larger number?

    asked by wan
  121. Math

    Slove equation 5x^2= 29x +6.

    asked by Linda
  122. Math

    X^2-2x-15= can this be done.

    asked by Linda
  123. Algebra

    Solve the equation 4L/5=3 L=

    asked by Linda
  124. science

    what is grossular used for

    asked by Kandy Bear
  125. College math

    -8i(2i-7)

    asked by Jackie