Questions Asked on
November 7, 2010

  1. Chem

    Plese tell me if these are right. A 15.0-mL sample of NaCl solution has a mass of 15.78g. After the NaCl is evaporated to dryness, the dry salt residue has a mass of 3.26g. Calculate the following concentrations for the NaCl solution. a. %(m/m)= 3.26 x 100

    asked by Jason
  2. chemistry

    If you add 5.0 mL of 0.50 M NaOH solution to 20.0 mL to Buffer C, what is the change in pH of the buffer? (where buffer C is 8.203 g sodium acetate with 100.0 mL of 1.0 M acetic acid) I have calculated the pH of buffer C to be 4.74. Now what? =\

    asked by Chelsea
  3. chemistry

    The rate of effusion of a particular gas was measured and found to be 23.0 mL/min. Under the same conditions, the rate of effusion of pure methane (CH4) gas is 46.2 mL/min. What is the molar mass of the unknown gas?

    asked by Anonymous
  4. english

    what are some poetic devices used in the following poem? "Mending Wall" by Robert Frost Something there is that doesn’t love a wall, That sends the frozen-ground-swell under it And spills the upper boulders in the sun, And makes gaps even two can pass

    asked by Rebecca
  5. Chemistry

    three different liquids are used in a manometer. (a) derive an expression for P1-P2 in terms of ro(a), ro(b), ro(c), h1, and h2 (b) suppose fluid A is methanol, B is water, and C is a manometer fluid with a specific gravity of 1.37; pressure P2=121.0 kPa;

    asked by Marissa
  6. physics

    I calculated parts a, b, c, but cannot figure out d. I tried combining all the forces and adding them but I am missing something? There is an 18 kg box on a 32degree incline. a HORIZONTAL force of 150 N is given to the box a) How much work is done by the

    asked by Aileen
  7. Physics

    A cue ball traveling at 4.0 m/s makes a glancing, elastic collision with a target ball of equal mass that is initially at rest. The cue ball is deflected so that it makes an angle of 30° with its original direction of travel. (a) Find the angle between

    asked by Amy
  8. AP Chem

    Consider the reaction 2 Al2O3(s) -> 4 Al(s) + 3 O2(g) . H = +3339.6 kJ/mol What is the change in heat when 0.455 L of a 3.60 M Al solution reacts with excess O2 ? 1. -685 kJ 2. -21,962 kJ 3. -1368 kJ 4. -2738 kJ 5. -5477 kJ 6. -26,521 kJ 7. -424 kJ 8.

    asked by Beth
  9. physics

    You push a 2.0 kg block against a horizontal spring, compressing the spring by 15 cm. Then you release the block, and the spring sends it sliding across a tabletop. It stops 75 cm from where you released it. The spring constant is 200 N/m. What is the

    asked by Meghan
  10. physics

    Two point masses are located a distance, D, apart. The gravitational force of attraction between them can be quadrupled by changing the distance to

    asked by unknown
  11. Chemistry

    Based on the balanced equation, C2H4 + 3O2 → 2CO2 + 2H2O calculate the molecules of H2O formed when 135 molecules of O2 are reacted.

    asked by Marissa
  12. World History

    How did people modify to their environment in the Mohenjo-Daro?

    asked by Janet
  13. chemistry

    Copper reacts with nitric acid according to the following reaction: 3 Cu (s) + 8 HNO3 (aq) --> 3 Cu(NO3)2 (aq) + 2 NO (g) + 4 H2O (l) If an pre 1982 copper penny contains 3.10 grams of copper, what volume of 8.00 M nitric acid is required to exactly

    asked by Christy
  14. AP Chem

    The energy change H associated with the reaction NBr3(g) + 3H2O(g) -> 3HOBr(g) + NH3(g) is +81 kJ/mol rxn. These bond energy values might be useful: O-H 459 kJ/mol; N-H 386 kJ/mol; O-Br 201 kJ/mol. The strength of the N Br bond is 1. 4 kJ/mol 2. 465

    asked by Beth
  15. math

    Paul needs 2 1/4 yards of fabric to make a tablecloth. How many tablecloths can he make from 18 1/2 yards of fabric. Define the variable write the equation solve and label.

    asked by obama
  16. math

    Volunteers who had developed a cold within the previous 24 hours were randomized to take either zinc or placebo lozenges every 2 to 3 hours until their cold symptoms were gone. Twenty-five participants took zinc lozenges, and 23 participants took placebo

    asked by Anonymous
  17. chemistry

    If 2.1 moles of CaCl2 are dissolved in enough water to make a 0.92-liter solution, what is the resulting molarity? 0.44 M CaCl2 0.70 M CaCl2 2.3 M CaCl2 3.0 M CaCl2

    asked by smith
  18. math

    A bag contains 3 red marbles, 2 green ones, 1 lavender one, 2 yellows, and 4 orange marbles. How many sets of four marbles include all the red ones? 1Your answer is incorrect.

    asked by liz
  19. Physics

    A man doing push-ups pauses in the position shown in the figure . His mass = 68 kg. Determine the normal force exerted by the floor on each hand. Determine the normal force exerted by the floor on each foot.

    asked by Nicole
  20. science

    A cue ball traveling at 4.0 m/s makes a glancing, elastic collision with a target ball of equal mass that is initially at rest. The cue ball is deflected so that it makes an angle of 30° with its original direction of travel. (a) Find the angle between

    asked by Amy
  21. calculus

    Time (months) 0 1 2 3 4 5 Rate pollutants are escaping 2 5 7 16 24 34 Use this data to sketch a graph Draw rectangles on this graph (as in Figure 5.2) to help you underestimate the total pollutants that escaped during the first month. What underestimate

    asked by Erika
  22. Calculus

    The demand function for a product is modeled by : p=10,000(1-(3/3+e^-0.001x) Find the price of the product if the quantity demanded is (a) x=1000 units and (b) x=1500 units. What is the limit of the price as x increases without bound?

    asked by Tyler
  23. Geometry

    A farmer uses 140 ft. of fencing to enclose a rectangular field. if the ratio of length to width is 3:4, find the diagonal of the field. Any help is appreciated, thank you!

    asked by Rachel
  24. physics

    The two forces F1 and F2 act on a 27-kg object on a frictionless tabletop. If F1 = 7.1 N and F2 = 33 N, find the net force on the object and its acceleration. WHAT IN the world...how do i figure this out!

    asked by aNGEl
  25. chemistry

    Light with a wavelength of 405 nm fell on a strontium surface, and electrons were ejected. If the speed of an ejected electron is 3.49 105 m/s, what energy was expended in removing the electron from the metal? Express the answer in joules (per electron)

    asked by Emily
  26. physics 111

    The 20-g centrifuge at NASA's Ames Research Center in Mountain View, California, is a cylindrical tube 58 ft long with a radius of 29 ft (see figure). If a rider sits in a chair at the end of one arm facing the center, how many revolutions per minute would

    asked by Blake
  27. Math

    A culture of bacteria in a petri dish is doubling every hour. If there are 100 bacteria at time t=0, how many bacteria will there be in 12 hours?

    asked by Anonymous
  28. chemistry

    What is the wavelength of the transition from n = 2 to n = 1 for Li2+? Li2+ is a hydrogen-like ion. Such an ion has a nucleus of charge +Ze and a single electron outside this nucleus. The energy levels of the ion are -Z2RH/n2, where Z is the atomic number.

    asked by Emily
  29. Physics

    A man doing push-ups pauses in the position shown in the figure . His mass = 68 kg. Image: img145.imageshack.us/img145/7130/picture1n.png a= 40 cm b= 95 cm c= 30 cm Determine the normal force exerted by the floor on each hand. Determine the normal force

    asked by Nicole
  30. physics

    An escalator is 15.0 m long. If a person stands on the escalator, it takes 38.0 s to ride from the bottom to the top. (a) If a person walks up the moving escalator with a speed of 0.500 m/s relative to the escalator, how long does it take the person to get

    asked by Kelly
  31. physics

    Identify the action-reaction paris in the following situations: a) a person takes a step b) a snowball hits someone in the back c) a footbal player catches a ball d) a leaf falls to the ground HELP

    asked by Alecia
  32. Algebra

    how to solve this: what is the largest rectangular area that can be enclosed with 400 ft of fencing? What are the dimensions of the rectangle? Could someone write the equation. I know how to solve it without an equation but I want to know the equation.

    asked by Amy
  33. Calculus

    A rectangle is constructed with its base on the diameter of a semicircle with radius 5 cm and with two vertices on the semicircle. What are the dimensions of the rectangle with maximum area?

    asked by Tiff
  34. ethics question

    how HIPAA, GLB, and COPPA laws can help ensure people's privacy. What is their ethical justification? Is there gray area in these laws? How do some businesses try to find their way around these laws?

    asked by Anonymous
  35. Physics

    A 107 kg clock initially at rest on a horizontal floor requires a 673 N horizontal force to set it in motion. After the clock is in motion, a horizontal force of 522 N keeps it moving with a constant velocity. (a) Find ìs between the clock and the floor.

    asked by Elizabeth
  36. Math

    a grid has line at 90-degree angles. There are 12 lines in one direction and 9 lines in the other direction. Lines that are parallel are 11 inches apart. What is the least number of 12-inch floor tiles needed to cover all of the line interestions on the

    asked by Kelly
  37. Precalculus

    The sphereflake shown (not shown for question) is a computergenerated fractal that was created by Eric Haines. The radius of the large sphere is 1. Attached to the large sphere are nine spheres of radius . Attached to each of the smaller spheres are nine

    asked by Tony
  38. Calculus

    After t years, the value of a car that originally cost $16,000 depreciates so that each year is is worth 3/4 of it's value for the precious year. Find a model for V(t), the value of the car after t years. Sketch a graph of the model and determine the value

    asked by Chelsea
  39. chemistry

    Calcium carbonate reacts with hydrochloric acid according to the following reaction: CaCO3 (s) + 2 HCl (aq) --> CaCl2 (aq) + H2O (l) + CO2 (g) How many grams of calcium carbonate would be required to neutralize 50.0 cm3 of 8.00 M HCl?

    asked by Christina
  40. Organic Chemistry Lab

    How does the allylic halide behave under SN2 and SN1 conditions? Briefly explain why the allylic halide should be able to undergo both SN2 and SN1 mechanisms. If this is any relevant to the question, we did an experiment on the SN1/SN2 reactivity of alkyl

    asked by Crystal
  41. Physics

    How much work is required to stop an electron (m = 9.11*10^-31 kg) which is moving with a speed of 1.50×106 m/s?

    asked by Emma
  42. chemistry

    A mixture of ALuminum and Zinc weighing 1.67 grams is completely dissolved in hydrochloric acid and 1.750 Liters of hydrogen is produced at 273 Kelvin and 1.0 ATM. can you please help me calculate the mass of Aluminum and Zinc in the Sample?

    asked by Gloria
  43. us history

    what is a social contract?

    asked by jack
  44. PHSYICS

    A HIKER SHOUTS TOWARD A VERTICAL CLIFF 685 M AWAY. THE ECHO IS HEARD 4.00 SECONDS LATER. WHAT IS THE SPEED OF SOUND OF THE HIKER'S VOICE IN AIR?

    asked by ROWDY ANDRESS
  45. geometry

    Express in terms of x, the value in cents of x lbs. of 40 cent cookies and (30-x) pounds of 50 cent cookies.

    asked by Finn
  46. physic

    A mechanic pushes a 2,500 kg car from rest to a speed v, with 5000J of work. During this process the car moves 25m. Neglecting friction, calculate: a) the final velocity of car b) The horizontal force exerted on the car

    asked by Luz
  47. chemistry

    What is the de Broglie wavelength of an oxygen molecule, O2, traveling at 503 m/s?

    asked by Emily
  48. physics

    Four tubes are set up in the lab at sea level as shown by the figure. The letter under each tube corresponds the question with the same letter. 1 atm = 101300 Pa = 101300 N/m2 ρwater = 1000 kg/m3 (a) What is the pressure pushing down on the surface of the

    asked by Sarah
  49. Chemistry

    For the reaction: CH4(g) + 2O2(g)-->CO2(g)+2H2O (l) ÄH = -50.38 kJ/mol, How many moles of methane (CH4) must be burned to produce 137 kJ of heat?

    asked by Luke
  50. science

    What is the net force of a 2.0N force and a 3.0N force acting on an object in the same directions?

    asked by ced
  51. chemistry

    How do you calculate the energy released when 1 mole of ethanol, C2H5OH, is burned?

    asked by william
  52. 12th grade PYSICS

    A 45.7-kg boy on a swing moves in a circular arc of radius 3.80 m.At the lowest position, the child's speed reaches 2.78 m/s. Determine the magnitude of the tension in each of the two vertical support chains. i used mv^2/r, but i keep getting the answer

    asked by Samii
  53. Math

    A Rectangle with vertices A, B, C, AND D. The triangle is divided with vertices P AND Q. How many right triangles can you make with using only three of the vertices {A, B, C, D, P, OR Q}. Also The answer is not 12 or 16. Our teacher gave us this hints

    asked by Camara
  54. chemistry

    Complete and balance: FeCl3 (aq) + KSCN(aq) ___________ + ____________? Cu (s) + HNO3(aq) Cu(NO3)2(aq) + H2O (l) + ____________?

    asked by john
  55. Physics help please

    The drawing shows a collision between two pucks on an air-hockey table. Puck A has a mass of 0.030 kg and is moving along the x axis with a velocity of +5.5 m/s. It makes a collision with puck B, which has a mass of 0.055 kg and is initially at rest. The

    asked by joseph
  56. geometry

    1. the opposite angles of a parallelogram measure(x=30) and (2x-50).Find the measure of each angle of the parallelogram. 2. the ratio of two consecutive angles of a parallelogram is 2:3. find the measurement of the angles of a parallelogram. 3.the

    asked by marycon
  57. chemistry

    Calculate the frequency of electromagnetic radiation emitted by the hydrogen atom in the electron transition from n = 7 to n = 6.

    asked by Emily
  58. physic

    to move a large crate across a rough floor, you push down on it at an angle of 21 degree. find the force necessary to start the crate moving, given mass of the crate is 32 kg and the coefficient of static friction between the crate and the floor is 0.57

    asked by sid
  59. Science

    Can anyone give me an acrostic poem on lithosphere?

    asked by Victor
  60. Physics

    The angular position of a point on the rim of a rotating wheel is given by Theta = 4.0t-3t^2+t^3, where theta is in radians and t is in seconds. At t=0, what are (a.) the point's angular position and (b.) its angular velocity? (c.) What is its angular

    asked by Scott
  61. Physics

    Water is moving with a speed of 5.0 m/s through a pipe with a cross-sectional area of 4.2 cm2. The water gradually descends 8.2 m as the pipe increases to 9.0 cm2. (a) What is the speed at the lower level? (b) If the pressure at the upper level is 1.8 ×

    asked by Megan
  62. math

    write the exponential equation in logarithmic form (5/4)^-2 = 16/25

    asked by ELK
  63. physics

    A 4.5 kg body moving in the +x direction at 5.5 m/s collides head-on with a 2.5 kg body moving in the -x direction at 4.0 m/s. Find the final velocity of each mass for each of the following situations.The collision is elastic. (4.5 kg mass) (2.5 kg mass)

    asked by Lily
  64. Physics

    A passenger in a helicopter traveling upwards at 18 m/s accidentally drops a package out the window. If it takes 17 seconds to reach the ground, how high to the nearest meter was the helicopter when the package was dropped? To the nearest meter what was

    asked by Jsnl
  65. Spanish 1

    4. No es trabajadora. Es _____. a. atrevida b. desordenada c. perezosa d. impaciente C? 9. No me gusta _____ nadar ____ dibujar. a. sí/sí b. sí/ni c. ni/ni d. ni/tampoco I'm going with C now? 15. A mí me gusta nadar. ¿ Y a ____? a. ti b. tu c. tú d.

    asked by mysterychicken
  66. physics please help

    A 5.00 kg ball (ball 1), moving to the right at a velocity of +4.00 m/s on a frictionless table, collides head-on with a stationary 7.60 kg ball (ball 2). Find the final velocities of the balls if the collision is as specified below. (a) elastic collision

    asked by joshua
  67. math

    If a room has a perimeter of 32feet how many square floor tiles with sides 1 foot long are needed to cover the floor of the room? Would it be 64 tiles since the area would be 64 sq feet.

    asked by Jill
  68. Physics

    The angular position of a point on the rim of a rotating wheel is given by Theta = 4.0t-3t^2+t^3, where theta is in radians and t is in seconds. At t=0, what are (a.) the point's angular position and (b.) its angular velocity? (c.) What is its angular

    asked by Scott
  69. 8th grade

    two children are fighting over a toy pull on it from opposite sides .the result is stand off.explain this term of the net force

    asked by juan
  70. 10 grade English

    Write an essay comparing Baldwin's account of the Titanic with Rosenthal's account of his visit to Auschwitz. In your paragraph, explain how the tone and purpose of each essay is different. Support your argument with at least one example from each essay.

    asked by Randell
  71. ENGLISH

    How would you rewrite the following claim to remedy problems of ambiguity? Do not assume that common sense by itself solves the problem. "I am a huge Mustang fan." --- Ford Mustang advertisement ANSWERS: 1. I am a big man, and I like Mustangs. 2. I like

    asked by Jim
  72. physics

    A rectangular block of ice 10 m on each side and 1.1 m thick floats in sea water. The density of the sea water is 1025 kg/m3. The density of ice is 917 kg/m3. a) How high does the top of the ice block float above the water level? m * .116 OK HELP: Use

    asked by Sarah
  73. Spanish 1

    5. No, ____ me gusta ir a la escuela a. nada b. no c. pues d. ni B? 9. No me gusta ____ nadar ____ dibujar. a. si/si b. si/ni c. ni/ni d. ni/tampoco D? Thanks -MC

    asked by mysterychicken
  74. math

    At 3 pm a plane left the airport for LA traveling at 600 mph. At 3:30, another plane left the same airport on the same route traveling 650 mph. What time did the 2nd plane overtake the first. A. 5:15 pm B. 6:45 pm C. 6:50 pm D: 7:15 pm E: 9:30 pm Is D

    asked by Sam
  75. physics

    A mass m is attached to the end of a spring (constant k). The mass is given an initial displacement x0 from equilibrium, and an initial speed v0. Ignoring friction and the mass of the spring, use energy methods to find the following in terms of the given

    asked by Lily
  76. Precalc

    Fred hits a baseball 3 ft above ground at a velocity of 100 ft per sec and at an Angle of 45 degrees with respect to level ground. The path of the baseball is given by the function f(x)=-0.0032x^2+x+3 where f(x) is the height of the baseball in ft and x is

    asked by Jackk
  77. physics

    A woman holds a 1.9 m long uniform 5.5 kg pole as shown in the figure . her hands are 30 cm apart. Determine the magnitudes of the forces she must exert with each hand. To what position should she move her left hand so that neither hand has to exert a

    asked by Nicole
  78. physics

    A 1500-kg car is making a turn with a 100.0-m radius on a road where the coefficient of static friction is 0.70. What is the maximum speed the car can go without skidding?

    asked by jane
  79. ap physics

    hi i am not sure how to do this...thank you a man is going to pitch a ball. he moves the ball in a circular path of radius 0.6 m, constantly applying a force of 30N to the ball in the same direction as the ball's velocity along the circular path. at the

    asked by Appreciative student
  80. physics

    a pieces of metal of mass 3.6kg is suspended from a spring balance, what is the reading of spring balance in newton, with a metal in air, with the metal in water, the metal in prime and what is the density in which it gives a reading of 33newton

    asked by fola
  81. physics

    An astronaut on the Moon fires a projectile from a launcher on a level surface so as to get the maximum range. If the launcher gives the projectile a muzzle velocity of 23 m/s, what is the range of the projectile? [Hint: The acceleration due to gravity on

    asked by ayanna
  82. physics please help me

    A 5.00 kg ball (ball 1), moving to the right at a velocity of +4.00 m/s on a frictionless table, collides head-on with a stationary 7.60 kg ball (ball 2). Find the final velocities of the balls if the collision is as specified below. (a) elastic collision

    asked by dan
  83. catering

    when would you use a parchment frill

    asked by brenda
  84. Physics

    A pitcher claims he can throw a 0.157 kg baseball with as much momentum as a 1.5 g bullet moving with a speed of 1.50 multiplied by 103 m/s. (a) What must the baseball's speed be if the pitcher's claim is valid? m/s (b) Which has greater kinetic energy,

    asked by Amy
  85. physics

    A particle accelerates from rest at 3.1 m/s2. What is its speed 5.5 s after the particle starts moving? Answer in units of m/s.

    asked by nohbdy
  86. Physics

    how much work is required to lift a 98-N block of ice if A) it is lifted a vertical distance of 5-m.? B) you push the same block of ice up a 7-m long ramp using in acompare to the work required in b.? C) How does the work required in A compare to the work

    asked by Tyler
  87. Calculus

    while shopping for wine for his wedding, Kepler noticed that the price of a barrel of wine (here assumed to be a cylinder) was determined solely by the length d of a dipstick that was inserted diagonally through a hole in the top of the barrel to the edge

    asked by Ken
  88. physics

    two ropes attached to I beam (mass 500 kg). ropes make angles of 60 degrees with horizontal. Determine tension in each rope

    asked by Anonymous
  89. calculus

    use the methods of this section to sketch the curve. y=x^3-3a^2x+2a^3, where a is a positive constant. What do the members of this family of curves have in common? How do they differ from each other?

    asked by help
  90. science

    Organism A has more juxtamedullary nephrons than organism B. which of these organisms could concentrate urine more effectively and why?

    asked by Anonymous
  91. Physics

    a rifle is fried from the top of a building 220 meters high with an initial velocity of 425 m/s at an angle of 12.0 degrees above the horizontal. a. how long will it take for the bullet to reach the ground? b. how far from the base of the building will the

    asked by Anna
  92. 11th grade

    A 7.8 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 14.8 N. Find the speed of the block after it has moved 2.8 m. Answer in units of m/s

    asked by joshuaJR
  93. ENGLISH

    How would you rewrite the following claim to remedy problems of ambiguity? Do not assume that common sense by itself solves the problem. "Two million times a day Americans love to eat, Rice-a-Roni -- the San Francisco treat." ANSWERS: 1. Two million times

    asked by Jim
  94. us history

    7. Why did the British decide to launch a campaign against the southern colonies in 1778? What advantages and disadvantages did each side have in this region?

    asked by Anonymous
  95. english

    In "The summer people" by Shirley Jackson. What is the stories point of view? For which Character(s) does the narrator give us insights into the mind? Give an example of this.

    asked by chey
  96. Calculus

    Year 1960 1970 1980 1990 2000 Rate 39 59 64 89 106 of change (million people per year) Use this data to sketch a graph like that in Figure 5.2 on page 238. Draw rectangles on this graph (as in Figure 5.2) to help you underestimate the total change in the

    asked by Erika
  97. Physics

    A woman holds a 1.9 m long uniform 5.5 kg pole as shown in the figure . her hands are 30 cm apart. Determine the magnitudes of the forces she must exert with each hand. To what position should she move her left hand so that neither hand has to exert a

    asked by Nicole
  98. Math

    Ashley can ride her bike to work in 2/3 of an hour. When she drives to work it takes 1/3 of an hour. If she drives 12 miles per hour faster than she rides her bike, how fast does she ride her bike?

    asked by Chris
  99. Math

    At the end of each quarter, a 50-year-old woman puts $3000 in a retirement account that pays 5% interest compounded quarterly. When she reaches 60, she withdraws the entire amount and places it in a mutual fund that pays 6.9% interest compounded monthly.

    asked by dana
  100. chemistry

    Calculate the shortest wavelength of visible light (in nanometers) seen in the spectrum of the hydrogen atom. nm What are the principle quantum numbers for the levels in this transition?

    asked by Emily
  101. math

    how does the integral of cscx = ln|cscx - cotx|+C and ln |tan x/2|+C?

    asked by julia
  102. physics

    A loaf of bread weighs 3.9 N on earth. What should it weigh, in newtons, on the moon, where the acceleration due to gravity is one-sixth that on Earth?

    asked by Sabrina
  103. calculus

    let f(x)= 2 - |2x-1|. Show that there is no value of c such that f(3)- f(0) = f'(c)(3-0). Why does this not contradict the mean value theorem.

    asked by Sasha
  104. physics

    The magnitude of the force that a baseball bat exerts on a ball is 50. newtons. The magnitude of the force that the ball exerts on the bat is

    asked by unknown
  105. physics

    A force of friction of 3.2N acts on a 1.1kg puck while it is sliding along a horizontal surface. If the initial velocity of the puck was 7.5 m/s , how far will the puck travel before coming to rest?

    asked by mercedes
  106. physics

    if i throw a 2kg glob of clay and hit a wall at 3 m/s, how much momentum do i impact to the clay/wall? why?

    asked by tay
  107. Math

    At a party, 55 handshakes took place as everyone shook hands with everyone else in attendance. How many people were at the party?

    asked by Renee
  108. physics

    suppose you exert 150N on your refrigerator and push it across the kitchen floor at constant velocity. a. is the friction force equal and opposite to your 150N push? explain b. does the friction force make up the reaction force to your push?

    asked by Anonymous
  109. Physics

    If the ball is in contact with the player's head for 20 ms, what is the average acceleration of the ball? (Note that the force of gravity may be ignored during the brief collision time.)

    asked by Anonymous
  110. English

    1. Look at the Canadian national flag. 2. Look at the national flag of Canada. 3. This is the Chinese national flag. 4. This is the national flag of China. 5. This is American national flag. 6. This is the national flag of America. (Are they all

    asked by rfvv
  111. physics

    The weight of an object is the same on two different planets. The mass of planet A is only fifteen percent that of planet B. Find rA/rB, which is the ratio of the radii of the planets.

    asked by megan
  112. english

    In "The summer people" by Shirley Jackson. What is the stories point of view? For which Character(s) does the narrator give us insights into the mind? Give an example of this. Explain the symbolism of the gathering storm and how it helps us interpret the

    asked by ....
  113. physics

    suppose you exert 150N on your refrigerator and push it across the kitchen floor at constant velocity. a. is the friction force equal and opposite to your 200N push? explain b. does the friction force make up the reaction force to your push?

    asked by Anonymous
  114. physics

    suppose you exert 150N on your refrigerator and push it across the kitchen floor at constant velocity. a. is the friction force equal and opposite to your 200N push? explain b. does the friction force make up the reaction force to your push?

    asked by Anonymous
  115. Math

    A farmer planted a field of Bt 123 corn and wants to estimate the yield in terms of bushels per acre. He counts 22 ears in 1/1000 of an acre. He determines that each ear has about 700 kernels on average. He also knows that a bushel contains about 90 000

    asked by Shirley
  116. algebra

    what is the equation of a hyperbola with one vertex at (6,5) and the equation of asymptotes are 5x-6y-30 and 5x+6y-30?

    asked by nic
  117. Physics

    A jet pilot is in a vertical loop. If the jet is moving at a speed of 1300 km per hour at the lowest point of the loop determine the minimum radius of the cirlce so that the centripetal acceleration at the lowest point does not exceed 6.0g's.

    asked by Chris
  118. Math

    I'm a seventh grade student, I'm having a hard time trying to understand how to do nth term, where n represents the position of the term?

    asked by Jay
  119. Mathematics

    Find the periodic payment that will amount to the given sum under the given conditions: S=$150,000; interest is 6% compounded semiannually; payments are made at the end of each semiannual period for 11 years

    asked by Becky
  120. physics

    can you help me through this? A boat moves through a river at 7.0 m/s relative to the water, regardless of the boat's direction. If the water in the river is flowing at 3.5 m/s, how long does it take the boat to make a round trip consisting of a 250 m

    asked by Maria
  121. physics

    an object is released from rest on a planet that has no atmosphere.the object falls freely for 3.46 m in the first second.what is the magnitude of the acceleration due to the gravity on the planet?

    asked by bill
  122. science

    if we say that one quantity is proportional to another quantity does that mean they are equal to each other explain using mass and weight as an example

    asked by kristina
  123. Physics HELPPPP

    A speeder traveling at 37 m/s passes a motorcycle policeman at rest at the side of the road. The policeman accelerates at 2.62 m/s2, To the nearest tenth of a second how long does it take the policeman to catch the speeder?

    asked by Jsnl
  124. Chemisty

    ok so heres the question: Calculate the energy of a photon of electromagnetic radiation at each of the following frequencies. For 100.7 MHz. the equation to be used is E=Hc/lambda H is planks constant: 6.626*10^ -34. andddd c is the speed of light:

    asked by Tee
  125. Art/English-citations

    How would i shorten the following citation for subsequent citations in Turabian style? Department of Nineteenth-Century, Modern, and Contemporary Art. "Vincent van Gogh (1853–1890)". In Heilbrunn Timeline of Art History. New York: The Metropolitan Museum

    asked by Anonymous
  126. adult education

    identify the three domains of development, describe why it is important to consider each domain in the study of adult development, provide an example of how one domain of development impacts the other two.

    asked by tee
  127. math

    log8 4(square root sign) 1/2

    asked by DAVE
  128. math

    jasmine is helping her father plant trees to create a border around their back yard jasmine plants a treesevery 25 and her father plants a tree every 15 minutes if they started together how long before they would finsh planting a treee at the same time

    asked by emily
  129. Math

    Six girls each invited a date to the Sadie Hawkins dance. Before they joined in the fun, each couple worked in a different booth. The booths were Popcorn Sales, Marriage, Hayrides, Old Time Photos, Lemonade, and Raffle Tickets. Grab your partner and go

    asked by DIana
  130. physics

    A hydraulic lift has two connected pistons with cross-sectional areas 5 cm2 and 350 cm2. It is filled with oil of density 740 kg/m3. a) What mass must be placed on the small piston to support a car of mass 1400 kg at equal fluid levels? 20 OK HELP: The

    asked by Sarah
  131. Finance

    The Arizona Bay Corporation sells on credit terms o net 30. Its accounts are, on average, 8 days past due. If annual credit sales are 8.4 million, what is the company’s balance sheet amount in account receivable?

    asked by Anonymous
  132. chemistry

    Water is a polar solvent. Which of the following will not dissolve in water? sugar table salt vinegar olive oil

    asked by smith
  133. calculus

    Find the dimensions of the right circular cylinder of greatest volume which can be inscribe in a right circular cone with radius of 5 inches and a hieght of 12 inches(hint:use similar triangle property).also draw a label diagram....plz answer its too

    asked by daan
  134. calculus

    verify that the function satisfies the hypothesis of the mean value theorem on the given interval. then find all numbers c that satisfy the conclusion of the mean value theorem. f(x) = x/(x+2) , [1,4]

    asked by Sasha
  135. CHEM

    Will you please tell me if these are right? Write the symbol of the caton or anion that give(s) the following reaction:? 1. Forms a precipite with AgNO3 that does not dissolve in HNO3 2. Forms a gas with HCl 3. Give a bright, yellow-orange flame test 4.

    asked by Jason
  136. Business law

    I need help answering questions to a case. The case is: Wagner V. Columbia Pictures Industries, Inc. I don't know if you can find this online or not. These are the questions I need help with: 1. How might the result of this case have been different if the

    asked by Claire
  137. math

    40% of the 25 students in the class are boys. Write 40% as a fraction? Then find the ratio of girls to boys in the class. 10 of the students are boys the ratio would be 10:15? would 40% as a fraction be 4/10??

    asked by Jill
  138. chemistry

    A 10.0 g sample of liquid gallium metal, at its melting point, is added to 50.0g of water. The initital temperature of the water is 24.0 degrees C. If the molar enthalpy of freezing gallium is -5.54 kj/mol, what is the final temperature of the water?

    asked by Bob
  139. Spanish 1

    (I don't know how to make the accent marks, or the upside down question mark/exclamation point) 1. -"?Como es Juana?" -"_______" a. Es paciente b. Muy bien, gracias c. Es profesora d. Es de Chile C? 2. Me gusta dibujar. ______. a. Soy artistico b. Soy

    asked by mysterychicken
  140. physics

    You push an 20-kg crate up an inclin with an angle of 35 degrees to the horizontal with a force of 260-N. If the crate is moving at a constant velocity: 1. what is the component of the crate's weight parallel to the surface? 2. WHat is the sum of the

    asked by Katherine
  141. chemistry

    Can you tell if I'm correct. Which combination in titration has ph=pka and buffer region strong acid-strong base- no to both strong acid-weak base- yes to both weak acid-strong base- yes to both weak acid-weak base- I'm not sure about this one. Can anyone

    asked by poet
  142. Geometry

    is it possible to constuct a triangle with the lengths of 5ft,6ft, and 12 ft?

    asked by Skylar
  143. Math

    Find the periodic payment that will amount to the given sum under the given conditions: S=$150,000; interest is 6% compounded semiannually; payments are made at the end of each semiannual period for 11 years.

    asked by Jeff
  144. Physic

    A block moves up an incline of 45 inches at constant speed, because the action of a force of 15 N parallel to the incline. If the coefficient of kinetic friction is 0.3. Determine the weight of the box.

    asked by Luz
  145. Am I right??

    Who was the unions general? Ulysses S. Grant Who was the main general for the Confederacy? Robert E. Lee Who was president of the union? Abraham Lincoln Who was the president of the Confederacy? Jefferson Davis Am I right??

    asked by Erin
  146. math

    A poker hand consists of five cards from a standard deck of 52. Find the number of different poker hands of three of a kind (three of one denomination, one of another denomination, and one of a third). 1

    asked by liz
  147. physics

    A hydraulic lift has two connected pistons with cross-sectional areas 5 cm2 and 350 cm2. It is filled with oil of density 740 kg/m3. a) What mass must be placed on the small piston to support a car of mass 1400 kg at equal fluid levels? 20 OK HELP: The

    asked by Taylor
  148. Math

    At 10 am two cars start traveling toward each other from 287 miles apart. They passed each other at 1:30 pm. If the rate of the fster car exceeded the rate of the slower car by 6 miles per hour, find the rat (in mph) of the faster car. A. 38 B. 40 C. 44 D.

    asked by Quinn
  149. Physics

    61 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a speed of 29 m/s. If the player was moving upward with a speed of 4.0 m/s just before impact, what will be the speed of the ball immediately after

    asked by matt
  150. 10 grade chem

    Ok people my daughter myself and my husband have been unable to answer this question so your help would be appreciated. I asked hours ago but no one answered please help. What is the chemical aroma name for: basil, nutmeg and bayleaf thank you fo your

    asked by wilson
  151. Spanish 1

    4. No es trabajadora. Es _____. a. atrevida b. desordenada c. perezosa d. impaciente C? 9. No me gusta _____ nadar ____ dibujar. a. sí/sí b. sí/ni c. ni/ni d. ni/tampoco I'm going with C now? 10. No soy ni generosa a. o tacaño b. ni tacaña c. ni

    asked by mysterychicken
  152. math

    a bicycle rider left town at noon at traveled at a uniform rate of 15 miles an hour. at 2 pm the same day, a motorcycle rider left for the same place at a uniform rate 30 miles an hour higher. at what time did the motorcycle rider overtake the bicycle

    asked by abby
  153. algebra

    write an equation of the line containing the specified point and perpendicular to the indicated line (-2,-5), x-2y=3

    asked by franklin
  154. accounting

    You have been asked to speak at a career fair for high school students in your home town. Specifically, you are making a presentation about your role as an accountant. •Describe for the students the primary objectives of accounting. •Explain the basic

    asked by Jennifer
  155. English

    What are some differences between Beowulf and Wanderer?

    asked by Anna
  156. science

    What are cell wall consists of ?

    asked by Abaigeal
  157. PHYSICS-STUCK

    A rectangular field is 1.5 km long and 700 m wide. An asphalt road goes around the outside of the field and a dirt path cuts across the field. A student wants to go from A to B on the field. Path x goes along the road and is shown in red; path y is shown

    asked by Anonymous
  158. physics

    A pushes with force of 300 N at 25 degrees. B pushes with force of 275 N at 160 degrees. C pushes with force of 325 N at 300 degrees. Find resultant force. I got 187 N at -19 degrees or 161 degrees. Correct? or could you explain more please? Thank you.

    asked by Anonymous
  159. math

    verify that the function satisfies the hypothesis of the mean value theorem on the given interval. then find all numbers c that satisfy the conclusion of the mean value theorem. f(x) = x/(x+2) , [1,4]

    asked by help
  160. math

    If you have a circle graph 15 students like basketball 10 like soccer and 5 like softball. Write a ratio problem that relates to this graph and solve the problem. ratio would be 5/6,1/6,1/3 how would a solve this if this is the right ratio. Thank you so

    asked by Jill
  161. science

    Data: (time, temperature in degrees Celsius) 0,89 1,85 2,78 3,71 4,64 5,64 6,64 7,64 8,64 9,64 9,64 10,61 11,57 12,51 13,45 14,39 15,36 First I had to graph these points on the graph paper provided, which I did. Then it asks to identify the freezing point,

    asked by Anonymous
  162. Physics

    Angioplasty is a technique in which arteries partially blocked with plaque are dilated to increase blood flow. By what factor must the radius of an artery be increased in order to increase blood flow by a factor of 16?

    asked by BG
  163. physics

    A pushes with force of 300 N at 25 degrees. B pushes with force of 275 N at 160 degrees. C pushes with force of 325 N at 300 degrees. Find resultant force.

    asked by Anonymous
  164. 7th Grade Geometry

    A Rectangle with vertices A B C AND D. The triangle is divided with vertices P AND Q. How many right triangles can you make with using only three of the vertices {A B C D P OR Q}. AND also the answer for this question is not 12 or 6

    asked by Jacytiopa
  165. chemistry

    There is a maximum numerical value for the refractive index of a liquid substance. What is this value and why is it the maximum (HINT: take a look at the mathematical formula!)

    asked by 123
  166. Chemistry

    Use a combustion reaction of liquid ethanol in air as a source of work, assuming temperature is 25 deg C, air pressure is 1atm and all products are gases with partial pressures of 10atm each. How high can one lift a 1000kg weight by burning 100g of

    asked by Jordan
  167. adult education

    How will your life experiences prove beneficial as you move through your degree program? Briefly describe two life experiences and illustrate how each will be useful as you pursue academic goals. How can you reject the negative influences in your life and

    asked by tee
  168. physics please help

    The drawing shows a collision between two pucks on an air-hockey table. Puck A has a mass of 0.030 kg and is moving along the x axis with a velocity of +5.5 m/s. It makes a collision with puck B, which has a mass of 0.055 kg and is initially at rest. The

    asked by joshua
  169. science

    A pitcher claims he can throw a 0.157 kg baseball with as much momentum as a 1.5 g bullet moving with a speed of 1.50 multiplied by 103 m/s. (a) What must the baseball's speed be if the pitcher's claim is valid? m/s (b) Which has greater kinetic energy,

    asked by Amy
  170. college english

    i need help on writing subtopics for school uniforms. im for them and need to write arguementation paper about it

    asked by shonda
  171. 5th grade social studies

    describe the geographical features of your community or region. How might they have influenced people to settle there?

    asked by angel
  172. math

    I just need to know if I answered this correctly. mLy=37 find the complementary angle Ly That would be 90-37= correct?

    asked by Jewels
  173. Microeconomics

    In a patent-driven market, using the concept of minimum efficient scale of production, explain what would happen to competiton and to price when the patent expires? I don't see how I can interweave the minimum efficient scale of production into this

    asked by Stephen
  174. chemistry

    use a combustion reaction of liquid ethanol( C2H5OH) an air as a source of work, assuming T=25 celcius, air pressure is 1 atm, and all products are gases with partial pressure of 10 atm each. How high can one lift a 1000 kg weight by burning 100 g of

    asked by Whitney
  175. physics

    A US Coast Guard cutter is chasing a ship suspected of running contraband cigars out of Cuba. The cutter's trip can be divided into three legs: it travels with a constant velocity of 40.1 km/hr for 1 hour and 45.0 minutes at a navigational direction of

    asked by hal-e
  176. PHYSICS-HELP

    The metre was originally defined as a fraction of the distance from the North Pole to the equator. What problems would this definition of the metre create for people?

    asked by Anonymous
  177. math

    completing the square 3x^2 +15 -33 =0 a=3 b=15 c=-33 -15+or- sqrt225-4*3*-33/2*3 -15+or-sqrt225+396/6 is this right because don't you have to subtract not add the 396 please help. thanks

    asked by peter
  178. calculus...plz ans urgent

    Find the dimensions of the right circular cylinder of greatest volume which can be inscribe in a right circular cone with radius of 5 inches and a hieght of 12 inches(hint:use similar triangle property).also draw a label diagram....plz answer its too

    asked by daan
  179. science

    If the ball is in contact with the player's head for 20 ms, what is the average acceleration of the ball? (Note that the force of gravity may be ignored during the brief collision time.)

    asked by Jessie
  180. physics

    A 2.99 kg ball is dropped from the roof of a building 161.9 m high. While the ball is falling to Earth, a horizontal wind exerts a constant force of 12.3 N on the ball. How long does it take to hit the ground> The acceleration of gravity is 9.81 m/s2.

    asked by brian
  181. physics

    Using Kepler's constant (9.84 X 10^-14), calculate the orbital radius of an artificial satellite whose period of revolution around the Earth is 1.43 X 10^4s(3.64 h).

    asked by mercedes
  182. physics

    A propeller blade has a period of rotation of 0.400s. What is the speed of the outer tip of the propeller blade if the tip is 1.20m from the hub?

    asked by jane
  183. chemistry

    A 15.0 g of sample of silver is heated to 100.0 0C and then placed in a constant-pressure calorimeter containing 25.0 g of water at 23.0 0C. The final temperature of the system was measured as 25.0 0C. What is the specific heat of silver?

    asked by Luke
  184. MATH

    a ball of radius 1 is dropped into a V-shaped gutter. The ball touches the gutter's sides at the ball's equator. If the shortest distance from the surface of the ball to the vertex of the gutter is 1, what is the angle formed by the sides of the gutter?

    asked by bob
  185. 7th grade science

    A car with a forward force of 2,000 newtons drives a distance of 20 kilometers in minutes. How much power does it have?

    asked by Roland
  186. English

    give examples of literary and non-literary prose by citing examples from any source.350 words

    asked by Neetoosha
  187. Math

    At Small Town High there are 100 students, each of whom takes at least one of biology, chemistry, or physics. There are 50 students in biology, 60 in chemistry, and 70 in physics. If 24 students are enrolled in exactly two of these classes, how many

    asked by kyle
  188. History: Hoover

    Did Hoover fail to bring the country out of the Depression because he had too much gov intervention or was it too little?

    asked by Anonymous
  189. math

    A teacher asked studets to name numbers. After each number, the teacher responded using a certain rule. This table shows the numbers named by the students and the teacher's responses Students input 1,2,3,4,5,6,7 Teachers response 3,3,5,4,4,3,5

    asked by TJ
  190. astronomy

    The surface magnetic field of the Sun is found by measurement of the extra width in spectral lines due to the ________ Effect.

    asked by Lilly
  191. English

    1. He got in the car. (What is the part of speech of 'in'?) 2. Get in! (What is the part of speech of 'in' here?)

    asked by rfvv
  192. Biology

    During skeletal muscle contraction: Choose one answer. A. the A and I bands do not change length. B. cross bridges are formed between myosin and actin. C. minimal tension can be generated when the muscle is close to its normal resting length. D. the

    asked by Dean
  193. physics

    A rock of mass 48 kg accidentally breaks loose from the edge of a cliff and falls straight down. The magnitude of the air resistance that opposes its downward motion is 275 N. What is the magnitude of the acceleration of the rock?

    asked by megan
  194. english

    Are repudiate and denounce similar?

    asked by liiy
  195. Physics

    61 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a speed of 29 m/s. If the player was moving upward with a speed of 4.0 m/s just before impact, what will be the speed of the ball immediately after

    asked by Anonymous
  196. Microbiology Please Help Anyone

    You wish to study a variant [a close relative] of the Tobacco Mosaic virus. Specifically you want to characterize the capsid and genetic component as well as determine the viral load required to cause a disease state. a. What methodologies might you use to

    asked by Chels
  197. Calculus

    Solve & plot a graph for the following: F(X)=cos(X)-cos to second power X for the interval negative pi greater than or equal to X less than or equal to positive pi

    asked by Alex
  198. Accounting

    o Describe two business sectors you might want to work in if you were an accountant and explain why in 150 to 200 words.

    asked by John
  199. chemistry

    Would you expect the boiling point of a solution to change if you added a non-volatile solute such as potassium chloride? How? Would an insoluble substance such as sand affect the boiling point? EXPLAIN PLEASEE :] thanks so much!!

    asked by 123
  200. economics

    Assume the graph below represents the market demand for a patented prescription drug together with the firm-level marginal cost and average cost functions for producing the drug. Assume these cost curves do not reflect R&D costs of developing this drug,

    asked by tweetie
  201. economics

    Assume the graph below represents the market demand for a patented prescription drug together with the firm-level marginal cost and average cost functions for producing the drug. Assume these cost curves do not reflect R&D costs of developing this drug,

    asked by tweetie
  202. Causal Argument Paper

    Hello, I am needing help formulating a question for my English class. We are needing to write an ethical/causal argument. I want to relate it to either animal testing or animal hunting. Is this a decent one? "Is it ethical to continue animal

    asked by Aestas
  203. history

    cause: revolution broke out in haiti effect: I don't know this, can u help me

    asked by allen
  204. history

    cause: british impressed american sailors Whats a effect?

    asked by allen
  205. physics

    A US Coast Guard cutter is chasing a ship suspected of running contraband cigars out of Cuba. The cutter's trip can be divided into three legs: it travels with a constant velocity of 40.1 km/hr for 1 hour and 45.0 minutes at a navigational direction of

    asked by hal-e
  206. math

    you commute 63 miles one way to work. the trip to work takes 20 minutes longer than the trip home. your avarage speed on the trip home is 12 mph faster. What is your average speed on the trip home?

    asked by john
  207. Maths

    For the fixed point iteration method; re-arranging method, how can I describe ho the iterative formula works?

    asked by Ronald
  208. religion

    what is a religious settlement

    asked by tammy
  209. science

    individuals with diabetes mellitus produce urine that is concentrated and higher in volume than the urine of healthy individuals. Explain why these two characteristics are observed in diabetics.

    asked by Anonymous
  210. science

    A patient suffering from diabetes mellitus develops a condition called ketoacidosis. A patient in this situation will tend to hyperventilate in order to compensate for acidosis. explain why hyperventilation might help this.

    asked by Anonymous
  211. Math

    Two sides of a triangle have the same length. The third side measures 4 meters less than twice the common length . The perimeter of the triangle is 16 meters. What are the lengths of the three sides?

    asked by Joel
  212. MATH

    Grandpa Adams took a nap from 2:32 pm until 3:19 pm. How many sconds was Grandpa asleep?

    asked by Anonymous
  213. O. Chemistry (Nucleophilic Substitution)

    1. Explain why the reagent NaI in acetone encourages SN2 reactions. Provide another nucleophile/solvent combination that encourages SN2. What characteristics will each have? 2. Write the complete mechanism for the reaction of (3S, 4R)

    asked by Anonymous
  214. Language Arts

    What parts of the rhetorical triangle is irrelevant to formalist critics

    asked by Elaine
  215. math

    Compute a 95% confidence interval for the difference in mean days of overall symptoms for the placebo and zinc lozenge treatments. Use the unpooled standard error and use the smaller of n1 - 1 and n2 - 1 as a conservative estimate of degrees of freedom.

    asked by Anonymous
  216. 5th gr ade social studies

    what is the fact of Each European gropup that set up colonies settled in a specific part of the Americas.

    asked by angel
  217. math

    -1/3, 2/3, -5/6, -0.3 order from least to greatest

    asked by lilly
  218. Social St

    Three reasons on why to move to Colonial New York and three reasond why not to move???

    asked by Anonoyms
  219. math208

    The price of a technology stock was yesterday. Today, the price rose to . Find the percentage increase. Round your answer to the nearest tenth of a percent

    asked by gina morris
  220. Chemistry

    Regarding the combustion of MgO, would the end product be higher, lower, or the same without removing the Mg3N2 by-product? I am guessing that it would be higher, but I am not sure. Thank you.

    asked by Emmy
  221. business

    . I have $2,000 that I can put away for my daughter’s college education. There is a savings program that it is offering 3.75% for 18 years. How much will she have for college

    asked by Anonymous
  222. 8th grade science

    Describe the motion of a bicycle in a race in terms speed,velocity,acceleration.

    asked by cassie
  223. Language Arts

    I have to do some research of the poor in the Victorian Era. These are some things that I have to look for: 1. What kinds of programs were in existence to help the poor? 2. What was a poorhouse? 3. What was Debtor's prison? 4. Why were the poor, poor? Are

    asked by Anya
  224. English

    "the summer people" by Shirley Jackson How does the use of dialect separate the allisons from the townspeople?

    asked by Chey
  225. Math please help!

    Find the equation of the tangent line to the curve: 2(x^2+y^2)^2 = 25(x^2-y^2) at the point ( 3 , 1 ). The equation of this tangent line can be written in the form y = mx+b

    asked by applebottom
  226. Chem

    weight of 1 gallon of hydrochloric acid

    asked by m
  227. English

    I have to rite a paper on y animal research is benifical. Is this a good thesis statement? Animal research helps save lives all over the world. It is used to see if a new medicine is safe and the animals used in the experiments are also treated in the most

    asked by Sarah
  228. math

    Shane invests $11,000 in bonds that earn simple interst of 6%. The interest is payable at the maturity of bonds after 5yrs. Find the total amount that shane will receive after 5yrs. PLZ SHOW WORK

    asked by paully
  229. English

    What is the difference between APA Citation and MLA Citation when you write a bibliography and in paranthetical citations?

    asked by Jackie
  230. math

    a ball of radius 1 is dropped into a V-shaped gutter. The ball touches the gutter's sides at the ball's equator. If the shortest distance from the surface of the ball to the vertex of the gutter is 1, what is the angle formed by the sides of the gutter?

    asked by bob
  231. calculus

    find maclaurin series. f(x)=tanx

    asked by daan
  232. physics

    two ropes attached to I beam (mass 500 kg). ropes make angles of 60 degrees with horizontal. Determine tension in each rope. I ended up with 2829 N for each. Correct? or could you explain more?

    asked by Anonymous
  233. English

    1. The movie Minsu wants to see is Shrek. 2. The movie Minsu wants to watch is Shrek. (Which verb do we have to use? Are both OK? which one is commonly used?)

    asked by rfvv
  234. math

    find the local maximum and minimum values of f using both the first and second derivative tests. which method do you prefer? f(x) = x/(x^2+4)

    asked by Sasha
  235. Chemistry

    How many electrons would be required to fill the following sublevels? This is what I got *3s = A *4s = A *3d = C *4d =C *3p =B *2d= E *3f =E *4d =C Choices are as follows A. 2 B 6 C 10 D 14 E There is no such orbital

    asked by Kimberly
  236. Language arts

    What is the adverb in the sentence: It began to rain, and we all ran outdoors.

    asked by Evan
  237. Math

    How would you solve this equation for x? y= -4x^3+15x^2-1

    asked by John
  238. math

    which product is not equal to -1? A. 4/5 x 85/68 = +1 B. 3/27 x -216/24= -1 C. 7/8 x -16/14 = -1 D. -1/12 x -12 = +1 are those right? And if so does that mean the answer is A and D?

    asked by liiy
  239. Art

    what is the meaning of "Tango C.1918-24" of Elie Nadelman? why did he make it? I need some information for that work. Please help me!!!

    asked by Catherine
  240. math

    solve y-7y+6=30

    asked by Anonymous
  241. physics

    You push an 37.4-kg box up an incline with an angle of 25 degrees to the horizontal with a force of 230-N. 1. What is the component of the crate's weight parallel to the surface? 2. What is the sum of the forces parallel to the surface? 3. What is the

    asked by Katherine
  242. history

    cause: spanish restricted use of port of new orleans What's the effect?

    asked by allen
  243. college

    I need help with an exercise question related to making a list of component objectives for the following scenario: Freydia is a 27-year old mother who has been using crack cocaine for 4 years. Her children, ages 7 and 9, have been removed from her care by

    asked by Lorie
  244. Math

    A bag contains four balls. Three are red, and the fourth is either red or blue, selected with equal probability. A ball is drawn from the ball and it is red. What is the probability that one of the balls still in the bag is blue?

    asked by kyle
  245. history

    cause: americans moved into spanish texas effect: what's an effect

    asked by allen
  246. Science-PHYSICS

    The metre was originally defined as a fraction of the distance from the North Pole to the equator. What problems would this definition of the metre create for people?

    asked by Anonymous
  247. Math

    Your family is planning a 4-h car trip. Along the way you are planning to make three 1/2 h stops. At what time should you leave home to arrive at the destination by 8:00 p.m.? how would I do this?

    asked by obama
  248. chemistry

    the value of Kp after the decomposition of sulfur trioxide (S03). 2SO3 (g)--2SO2 (g) +O2 (g) is 1.79 x10^-5 at 350 degree celcius. if SO3 initially at 0.200 atm pressure comes to equilibrium in an otherwise empty tank at 350 degree celcius, determine the

    asked by linda
  249. Economic

    calculate 250000-375p=15000+212.5p

    asked by Nicky
  250. college english

    I need to write a response to Hoagland's "City Rat?" I don't know where to begin, or what a possible response can be

    asked by Anonymous
  251. Math, Algebra

    A=1/2h(b1=b2) A=200 , b1=24 , h=10

    asked by Joe
  252. english

    Alice Axia’s article discussed overlooked tax deductions. It talked about some of the most commonly missed deductions. Whereas her use of statistics seemed to bolster her arguments, it would have been nice to see her elaborate more about the specific

    asked by Anonymous
  253. chemistry

    At l=530 nm:aCuSO4=7.544L/mol-cm aKMnO4= 3.645 L/mol-cm At l=800nm: aCuSO4=2.908L/mol-cm aKMnO4= 5.412L/mol-cm you use a celleith a path length of 1.0cm An unknown solution containing both CuSO4 and KMnO4 gave an absorbance reading of 0.679 at 530nm and an

    asked by Macy
  254. social studies

    How much tea was imported to the colonies from Britain in 1773, in 1774, and in 1775?

    asked by Sally
  255. Physics

    A typical model rocket engine exerts an average force of 5 N on its exhaust gas. How much average thrust force does the gas exert on the engine and rocket?

    asked by Melissa
  256. college english

    what are some things I can include in an essay about Hoagland's "City Rat" Please don't reply with links. I can do that myself.

    asked by Brian
  257. English

    Can you please tell me if everything is possible? Thank you. 1) Mickey hasn't finished the washing up, yet. He is late for the audition and Storm offers to do the washing up for him. She reminds him that on his first day in London he told her that he

    asked by Franco
  258. chemistry

    Would u expect the boiling point of a solution to change if u added a non-volatile solute such as KCl?

    asked by 123
  259. chemistry

    What are the chemical aroma names for basil, nutmeg and bayleves

    asked by wilson
  260. English

    Is there any basic format for a graphic organizer?

    asked by Anna
  261. Religions of the world

    What events and figures have shaped the development of Islam in the United States?

    asked by michelle
  262. college

    write an equation of the line containing the specified point and perpendicular to the indicated line (-2,-5), x-2y=3

    asked by franklin
  263. geometry

    the quadrilateral has a pweimeter of 60 meters. mp and no are congruent the length of mn is 10 meters and the length of no is 15 meters what is the length of po

    asked by emily
  264. SS

    What small country lies between 120 East and 130 East longitude and directly on the Tropic oc Cancer?

    asked by mom
  265. gcse english

    compare these two quotes they fight tybalt falls he gave me a tremendous dip and roll so that the church jumped over its weathercock

    asked by mandy
  266. partial pressure

    1) the value of Kb after the decomposition of sulfur trioxide (S03). 2SO3 (g)--2SO2 (g) +O2 (g) is 1.79 x10^-5 at 350 degree celcius. if SO3 initially at 0.200 atm pressure comes to equilibrium in an otherwise empty tank at 350 degree celcius, determine

    asked by linda
  267. chemistry

    Can someone please explain why there are so many gas laws. I've been doing my homework with the appropriate formulas, but I'm confused why everyone keeps say that PV=nRT is so wonderful? You can't get the same solution by using this ONE formula, so what is

    asked by Becky
  268. science

    aldostrone can stimulate the secretion of hydrogen ions by the kidney. predict the consequences of increased aldosterone secretion on body fluid pH

    asked by Anonymous
  269. ALgebra

    solve 3x-8>2x-1

    asked by mike
  270. Finance

    I need help writing scenario style questions for a school business management class

    asked by Andy
  271. algebra

    how do I write an equation of the line containing the specified point and perpendicular to the indicated line (-2,-5), x-2y=3

    asked by franklin
  272. Chemistry

    How many electrons would be required to fill the following sublevels? *3s *4s *3d *4d *3p *2d *3f *4d Choices are as follows A. 2 B 6 C 10 D 14 E There is no such orbital

    asked by Kimberly
  273. math

    I need help quick with this problem. Thanks in advance. What is the 14th root of (-2)^14 power?

    asked by barb
  274. Math

    Check please Rewrite using distubutive property 3(x-2) 8(z-3) (t-4)5 -2(x-7) 3x-6 8z-24 5t-20 -2x+14

    asked by TiffanyJ
  275. Math

    A rectangle has a perimeter of 48 cm.The shortest side is 10 cm long.What is the length is the longest side?

    asked by Phoenix
  276. architecture

    I have to do this big project on architecture and i'm only in 5th grade!!!!!!!!!!

    asked by Erin
  277. Social Studies

    What is the timeline for the French and Indian War

    asked by John
  278. Math

    Find the domain of (f X g)(x) if f(x) = 2 / x-3 and g(x) = 1 / x+4. I know the domain for g(x) is x cannot be -4 but I do not know what else to do.

    asked by Hannah
  279. math

    a factory increases the production of cars annually by 8% if presently it manufactures 211000 cars per year, how many cars will it manufacture per year after 4 yrs. I believe the answer is 287,063 but I need to know the formula

    asked by paully
  280. physics

    i apply an 800 N force to the crate a. how long would it take the crate to travel 20m across the warehouse floor(in the direction that i am pushing it)? b. what is the magnitude and direction of the force of friction acting on the crate?

    asked by Anonymous
  281. math

    Thank you in advance. How do you write an equivalent expression using radical notation for 635^3/4 power? Can I have this before midnight Central time?

    asked by barb
  282. business 115

    is offshore outsourcing good for U.S.? and i will the references where you retrieved your answer thank you.

    asked by jerry carter
  283. English

    Thank you very much for your corrections. Here are some more sentences I'm not sure of. 1) Mickey hasn't finished the washing-up, yet. He is late for the audition and Storm offers to do the washing up for him. She reminds him that on his first day in

    asked by Franco
  284. business

    I want to buy a house in 3 years. I need to have a down payment of $20,000. How much do I need to have today in order to have that if I can earn 4.5%?

    asked by Anonymous
  285. Math

    log0.001 =-3

    asked by Amanda
  286. 9th grade

    how do you think western europes pennisular geography had affected its history and settlements

    asked by Anonymous
  287. history

    cause:louisiana purchase was completed effect: napolean sold la to united states Is that right?

    asked by allen
  288. math

    Which product is not equal to -1? A. 4/5 • 85/68 B. 3/27 • - 216/24 C. 7/8 • -16/14 D. -1/12 • -12

    asked by liiy
  289. english

    I really don't understand how to scan a poem for iambic pentameter. Help!!

    asked by Anna
  290. Chemistry

    How can you determine which of any two halogens is more active?

    asked by Molly
  291. math

    multiply and simplify 5Ib. 6oz. * 5

    asked by Joe
  292. h

    cause: lewis and clark explored the west effect: What's an effect?

    asked by allen
  293. math

    what is the equation of a hyperbola with one vertex at (6,5) and the equation of asymptotes are 5x-6y-30 and 5x+6y-30?

    asked by nic
  294. business law

    Liability to Business invitees. John went to Lisa's Market to pick up a few items for dinner. It was a rainy, windy day, and the wind had blown water through the door of Lisa's Market each time the opened. As john entered through the door, he slipped and

    asked by eddie
  295. human resources

    hi what is the organizational system for any company? and how to raw spray diagram for it?

    asked by ????
  296. math

    slove the folowing eqaution negtive 23=x+35

    asked by emily
  297. economics

    Identify the ROI and NPV of the wireless order-taking system. Discuss some of the intangibles Lisa needs to consider and make a recommendation as to whether Lisa should order such a system.

    asked by Anonymous
  298. math

    solve for x 2(e^-7x)=5

    asked by Anna
  299. accounting

    What is the future value of 10,000 invested in 5 years Certificate of deposit at 4%p.a, intrest compouneded semi- annially at the end of 5 years, assuming that the interest and principle are both paid at maturity

    asked by heather hawkins
  300. science

    describe how a sodium gradient can be the energy source for cotransport of molecules into the cells of the proximal convoluted tubule

    asked by Anonymous
  301. language arts

    What is Gary Paulsen's education?

    asked by hunter
  302. Nervous System

    What are the important things about the nervous system?

    asked by Viviana
  303. writing

    Correct this passage,place all corrections in bold print and parthese. Why are great numbers of students choosing to pursue their college degrees using their home computers. Benjamin Franklin said; A penny saved is a penny earned”. This principle applies

    asked by kent
  304. composition

    • Write a paragraph of at least 200 words identifying three challenges that might arise when writing a paper.

    asked by rene
  305. cal

    ((4)/(3)x)*(sqrt(3-x)) i'm not sure how to find the derivative I know that I have to use chain rule so would it be 4/3(sqrt(3-x)+((4/3)x)((1/(3-x)^-.5) If this is right can someone help me simplify it

    asked by Anna
  306. adult education

    I WANT TO WRITE ESSAY describing what us government should do for new orleana and Haiti haveboth brought forth pleas for american aid;oil spills in gulf statesare creating enviromentalconcernes . the wars are causing loss of life . and where you believe

    asked by NAH
  307. MATH INTEREST

    A FACTORY INCREASES THE PRODUCTION OF CARS ANNUALLY BY 8%. IF PRESENTLY IT MANUFACURES 211,000 CARS PER YR, HOW MANY CARS WILL IT MANUFACTURE PER YR AFTER 4 YRS... i BELIEVE THE ANSWER IS 287063 BUT IM UNSURE OF THE FORMULA... COULD YOU PLEASE SHOW FORMULA

    asked by paully
  308. Math

    - 3/4x = 2/7 x= -8/21? and 2 2/5x = 8/15 x=2/9?

    asked by obama
  309. Mathematics for Liberal Arts

    infinites absolute value symbol l l First look at some small finite sets: Let A={1,5,9} B={U,V,W,X,Y,Z} C={Barrak Obama, Joe Biden, Hillary Clinton} Fill in the blanks with one of the symbols ,= lAl lBl lAl lCl lAl lAl lBl lCl Describe how you decided the

    asked by Jamie
  310. Social St.

    What is so special about Colonial NewYork???

    asked by Sumaiya
  311. math

    What are the measures of the angles of a right triangle with side lengths of 1, 2, and sqroot of 2?

    asked by april
  312. math

    What are the matrix used for?

    asked by katy
  313. calc

    What is an equation of the line tangent to the graph of f(x)=x2(2x+1)3 at the point where x=-1? (that's x squared (2x+1)cubed) I'm having trouble finding the derivative:f'(x)which would be the slope (m). No one has answered this question yet.

    asked by Naz
  314. Math

    Suppose that a=(rn x rn-1 ... r2 x r1 x r0) 10^3. This notation means that a = 10^(3n) x rn + 10^3(n-1) x rn-1 + 10^3 x r1 + r0. Prove that 13|a if and only if 13|r0-r1+r2-r3+...+(-1)^nrn

    asked by Anonymous
  315. Math

    6 is 98% of x which is 6.122448979 and I have to round to the nearest whole amount where necessary

    asked by Aly
  316. college

    visual education i need an example of rhythm

    asked by juliet
  317. sociology

    Are there any gender issues involved (differential treatment of men and women) in the film "Catfish in black bean sauce"?

    asked by Catherine
  318. math

    what is the equation of a hyperbola with one vertex at (6,5) and the equation of asymptotes are 5x-6y-30 and 5x+6y-30?

    asked by nic
  319. math

    if (x^65535)-1 is divisible by the prime number 65537, x is an integer, and 0 ≤ x < 65537, how many values of x are possible?

    asked by kyle
  320. Math

    Find the equation of the tangent line to the curve: 2(x^2+y^2)^2 = 25(x^2-y^2) at the point ( 3 , 1 ). The equation of this tangent line can be written in the form y = mx+b

    asked by applebottom
  321. history

    cause: aaron burr plotted to seize territory what's an effect

    asked by allen
  322. social studies

    who is the current lieutenant governor of Canada??? I tried searching it, but got nothing! PLZ help

    asked by pkd
  323. English

    I really need to know if the following questions are correct. 1) Which role did the Church play in medieval times? 2) How was Elizabethan theatre structured? Focus your attention on the description of the stages. 3)Briefly analyse the character of Shylock.

    asked by Franco
  324. math

    5/8 + 5/6 + 3/4 + 2/3 =

    asked by Joanne
  325. 8th grade

    i have a project in science and i can't seemed to find the explanation of an element's, silver, symbol. Thanks so much!!!!!!!!!!!!!!

    asked by Taavon 9
  326. science

    What is the net force of a 2.0N force and a 3.0N force acting on an object in the same directions?

    asked by ced
  327. geography

    what are some characteristics or facts for globilization?

    asked by daniel
  328. math

    8% OFF 112

    asked by NAH
  329. public administration

    Assume that after all the rhetoric and great debates on health care reform that Congress decided the rate regulation that has been used for a century to control the prices and services of common carriers in transportation is an appropriate model. It

    asked by james
  330. PHILOSOPHY

    What was William of Ockham's position on predestination? Where is a good sight to find imformation on this subject?

    asked by bob
  331. Science-Physics

    The metre was originally defined as a fraction of the distance from the North Pole to the equator. What problems would this definition of the metre create for people?

    asked by Anonymous
  332. Math

    Simplify the expression. (Do not use mixed numbers in your answer.) (5x^7/8)(2y^4/6)(x^9/8)(4y^-2/6)

    asked by Anonymous
  333. geograpgy

    what are some examples of globalization?

    asked by Daniel
  334. calculus

    find maclaurin series. f(x)=log^a(1+x)

    asked by daan
  335. AP CALCULUS

    What is an equation of the line tangent to the graph of f(x)=x2(2x+1)3 at the point where x=-1? (that's x squared (2x+1)cubed) I'm having trouble finding the derivative:f'(x)which would be the slope (m).

    asked by Naz
  336. Mathematics for Liberal Arts

    absolute value symbol l l First look at some small finite sets: Let A={1,5,9} B={U,V,W,X,Y,Z} C={Barrak Obama, Joe Biden, Hillary Clinton} Fill in the blanks with one of the symbols ,= lAl lBl lAl lCl lAl lAl lBl lCl Describe how you decided the

    asked by Jamie
  337. Pre-Algebra

    40,571 is x % of 76,550

    asked by Aly
  338. Information Technology

    how can unauthorized persons cause serious problems in a company’s database system?

    asked by English
  339. math

    Six fair coins are flipped, the probability that exactly three coins turns up heads is T. If the coins are flipped again, the probability that exactly 16T coins turns up heads is S. If the six coins are flipped again, the probability that exactly 32S coins

    asked by zid
  340. math

    What are the matrix used for?

    asked by katy
  341. physics

    You exert a force of 325N on the ball and it compresses the spring 44.5cm. ... Charge B (-5.0*10^-6) is at the origin; charge c (+4.0*10^-6) has coordinates (5 ,0),

    asked by Anonymous
  342. math

    complete the order triple 8x-y+z=22, 4x+2y-3z=13, x-3y+2x=-6

    asked by tiffany
  343. social studies

    Can you tell me some web scit`s on deserts

    asked by max
  344. math

    What are the measures of the angles of a right triangle with side lengths of 1, 2, and sqroot of 2? please show/explain work

    asked by bob
  345. math

    what is the equation of a hyperbola with one vertex at (6,5) and the equation of asymptotes are 5x-6y-30 and 5x+6y-30?

    asked by nic
  346. english

    what are some american made video games that are violent besides Grand Theft Auto?

    asked by kate
  347. architecture

    can you give me some websites for architectural designs for a 2 bedrooms bungalow?

    asked by nic
  348. science

    where on earth is silver found? Thanks!

    asked by Taavon 10
  349. calculus

    Referring to the Mean Value Theorem and Rolle's Theorem, how can I tell if f is continuous on the interval [a,b] and differentiable on (a,b).

    asked by Jason
  350. math

    1 1/2 pt = ____ fl oz

    asked by obama
  351. calculus

    find the local maximum and minimum values of f using both the first and second derivative tests. which method do you prefer? f(x) = x/(x^2+4)

    asked by Sasha
  352. Math

    sorry but, this is my question : how to solve ∫(sin ^ -3/2 x) dx ?

    asked by Briandhika
  353. Cool catch phrase

    i need a cool catch phrase to introduce The Civil War

    asked by Erin
  354. calculus

    find taylor series... a.f(x)=x^3-2x+4,a=2

    asked by daan
  355. math

    If you have 32 pets and 4 are birds what % are birds 4/32= 1/8 how do I convert this to a percent? or do I need to figure this a different way?

    asked by Jill
  356. college english

    I need help with expanding the following essay. Hoagland describes that he feels like a city rat, living in New York City. There is a lot more violence than there used to be, yet after seeing or hearing about it one just goes on with their life. People

    asked by Anonymous
  357. Math

    Find the domain of the function sqrt(4-x^2). I tried it not sure if i'm correct 4-x^2>= 0 -x^2>=-4 x^2

    asked by Jamie
  358. Algerbra

    10,000(1-n/20)=6500 please show work

    asked by dave
  359. math

    What are the matrix used for?

    asked by katy
  360. math208

    -1/3=3/5x-1/2

    asked by gina morris
  361. math

    when is these rational function equal to zero? 6x^2/(x^3+1)^2=0 -2x/(x^2-1)^2=0

    asked by help
  362. 5th grade

    find the missing sum 3+9+15+....+87

    asked by Anonymous
  363. math

    which product is not equal to -1? A. 4/5 • 85/68 B. 3/27 • 216/24 C. 7/8 • 16/14 D. -1/12 • -12

    asked by liiy
  364. 5th grade

    what are 3 types of engergy collected by telescopes?

    asked by Anonymous
  365. Social studies

    I have to do a 4h project. and I'm doing mine on the civil war. i need help finding a good catch phrase and information. well mostly information. please help!!!! like informing on the presidents and generals

    asked by Erin
  366. montgmory county community college

    what are the causes of reading books in the soceity?

    asked by sam
  367. mathematics

    write note on concept of surd

    asked by dayo
  368. english gcse

    shakespeare usually used short stage directions which one is the odd one out and why

    asked by mandy
  369. Math

    how to solve ∫ (sin^3/5 x) dx ?

    asked by Briandhika
  370. math

    x - 1/3 = 4/5

    asked by obama
  371. ALgebra

    f=m(m/g^2) solve for m

    asked by mike
  372. communication

    what are some negative things that occur in the tv show The Simpsons

    asked by Anonymous
  373. Math

    Find the inverse of the function f(x) = x / 2x+1 I know that you would make this x= y / 2x+1 but now I do not know what to do.

    asked by Hannah
  374. algebra

    what are 2 whole numbers that are multiplied to get a product

    asked by kaneisha
  375. math

    1/4 + 5/6 + 3/8 = 1 11/24?

    asked by liiy
  376. english

    150 children in our program need expensive dental treatment

    asked by victorline
  377. english

    why is the book "flipped" by wendelin van draanen considered a romance novel?

    asked by Rebecca
  378. communication

    what artist degrade females and in what kind of way?

    asked by john