1. Chemisry

    Please mark below all of the statments that correctly describe the physical properties of glass: 1.Glasses do not have slip systems. 2.Glasses consist of both covalent and ionic bonding. 3.Glasses are brittle at room temperature. 4.Glasses are amorphous

    asked by Anonym on April 10, 2013
  2. Physics Help, Please

    The figure below shows two speakers, A and B, which are emitting identical, synchronized (in-phase) sound waves at 240kHz. A person standing a point C hears a relatively loud sound. She then starts walking towards point D, and notices the sound gets

    asked by Michael on November 12, 2012
  3. Trigonometry

    Wave Motion A buoy oscillates in simple harmonic motion as waves go past. At a given time it is noted that the buoy moves a total of 3.5 feet from its low point to its high point, and that it returns to its high point every 10 seconds. Write an equation

    asked by AwesomeGuy on February 4, 2013
  4. 5th grade math

    Q. The Johnson family has been very busy and has not done there laundry for several weeks. The dirty laundry pile consists 540 items of clothing. They figure they can put average of 27 pieces of clothing in a single load. How many loads if laundry will the

    asked by Phoebe on December 8, 2014
  5. Physics

    A ball of mass m is attached to a spring with a spring constant k. The system is attached to a thin vertical axis as shown in Figure 4. In its equilibrium vertical position the spring length is L. The axis starts to rotate with a constant angular frequency

    asked by James on December 9, 2014
  6. Math 7th grade

    Susan has red, blue, and yellow sweaters. Joanne has green, red, and white sweaters. Diane's sweaters are red, blue, and mauve. Each girl has only one sweater of each color and will pick a sweater to wear at random. Find the probability that each girl

    asked by Margaret on May 23, 2010
  7. College Algebra

    I can't seem to figure this quadratic - An aircraft factory manufactures airplane engines. The unit cost C (the cost in dollars to make each airplane engine) depends on the number of engines made. If x engines are made, then the unit cost is given by the

    asked by Jermaine on March 19, 2017
  8. Math

    Students in Mr.Tandoc's shop class made a circular railroad crossing sign for a school play. The diameter of the sign was about 4 feet. How does the diameter compare to the circumference of the sign? A.The diameter is about 1/3 of the circumference B.The

    asked by Jerald on January 26, 2013
  9. Math

    Students in Mr. Tandoc's shop class made a circular railroad crossing sign for a school play. The diameter of the sign was about 4 feet. How does the diameter compare to the circumference of the sign? A. The diameter is about 1/3 of the circumference B.The

    asked by Jerald on January 28, 2013
  10. physics

    Cliff and Will are carrying a uniform 2.0m board of mass 75kg. Will is supporting the board at the end while cliff is 0.6m from the other end as shown in the following figure. Cliff has attached his lunch to his end of the board, and the tension in the

    asked by Leslie on July 3, 2016
  11. Resonance structures

    I'm trying to figure out some incorrect answers on my last test. I'll try to explain what the original structure looks like and hope you can decipher it. It is a cyclohexane with two double bonds. Carbon # 1 has a double bond to its left and none to its

    asked by Sheryl on October 24, 2006
  12. Science - Physics

    Count the teeth in the front and rear gears in speeds 1, 5, 6 and 10 for a ten-speed bike. Record your data in the table and figure the ISA (speed advantage) and the IMA (mechanical advantage)for each speed. (The diagram shows a rear gear with 34 teeth and

    asked by Cristina on April 16, 2009
  13. Physics

    Problem 2- 1. As a ship is approaching the dock at 45 cm/s, an important piece of landing equipment needs to be thrown to it before it can dock. This equipment is thrown at 15.0 m/s at 60∘ above the horizontal from the top of a tower at the edge of the

    asked by Maryam on October 26, 2013
  14. Math

    i really don't understand. i tried figure out. i started with the first charges: sqrt[2(20)(100))/0.05} Suppose you have a choice of three suppliers for footballs. the first charges $100 per delivery but won't deliver more than 200 at a time; the second

    asked by Mirella on May 6, 2015
  15. Physical science

    A 1.2 kg metal head of a geology hammer strikes a solid rock with a speed of 5.7 m/s. Assuming all the energy is retained by the hammer head, how much will it's temperature increase? C= .11 kcal/kgC I already set up the problem. But I keep getting the

    asked by Tayler on November 5, 2015
  16. Chemistry

    N-type silicon (Si) has been produced by doping with phosphorus (P). The charge-carrier population based on electrical conductivity measurments is determined to be 3.091*10^17 carriers/cm3 at room temperature. 1. Calculate the doping level of P (how much P

    asked by Alan on April 25, 2013
  17. Chemical thermodynamics

    An iron balls is drop into a congrats floor from a height of 10m. On the first rebouce it rises to 0.5m. Assume that all the macroscopic mechanical energy lost in cotillion with the floor goes into the ball and that specific heat capacity of is

    asked by Kunoun on July 21, 2017
  18. Anonymous

    climate and topographical factors that (a) intensify air pollution and (b) help reduce air pollution. Air pollution is promoted by temperature inversion layers, intense sunlight, and barrier moutain ranges on most or all sides. It is relieved by ocean

    asked by Anonymous on March 7, 2007
  19. Physics

    A 500.0 kg object is attached by a rope through a pulley to a paddle-wheel shaft that is placed in a well-insulated tank holding 25.0 kg of water. The object is allowed to fall, causing the paddle wheel to rotate, churning the water. If the object falls a

    asked by Carla on February 5, 2014
  20. College Physics

    A 1500-W heater is designed to be plugged into a 120-V outlet. What current will flow through the heating coil when the heater is plugged in? I = A What is R , the resistance of the heater? How long does it take to raise the temperature of the air in a

    asked by Lanise on February 6, 2010
  21. Science

    15)Which of the following shows the correct sequence of what happens to the water molecules in an ice cube when it is removed from the freezer? 1. the molecules gain enough energy to break free from each other. 2. the ice begins to melt 3. the molecules

    asked by #FreeGucci on March 16, 2016
  22. Chem-Temperature and Volume Relationships

    What condition must be true when conducting temperature volume measurement? Why would a rubber balloon be a poor system for this kind of expirement? The general equation is (P1V1)/T1 = (P2V2)/T2 If V and T are being studied, then P must be held constant.

    asked by Chrissy on January 25, 2007
  23. logic and design

    algorithm for waking in the morning, making and eating breakfast, I don't feel this is enough for my teacher can you help me. Idon't know if i have enough code start get up while not awake drink coffee endwhile if temperature < 65 then wear sweater else

    asked by lee on January 30, 2015
  24. chemistry

    In an adiabatic calorimetry experiment, 100 mL of 0.500 M HCl was added to 100 mL 0.500 M NaOH to produce 200 mL 0.25 M NaCl. A temperature increase of 3.38 °C was measured. Calculate the heat of reaction associated with this process at 25 °C from the

    asked by kjhytrew on February 4, 2015
  25. Chemistry

    If the heat from burning 6.000 g of C6H6 2C6H6(l) + 15O2(g) -> 12CO2(g) + 6H2O(l) + 6542 kJ is added to 5691 g of water at 21 °C, what is the final temperature of the water? Please tell me what I am doing wrong: 293,551= 5691*4.2*(Tf-21C) 293551=

    asked by Angela on December 9, 2012
  26. Physics

    A skier wears a jacket filled with goose down that is 15mm thick. Another skier wears a wool sweater that is 7.0mm thick. Both have the same surface area. Assuming the temperature difference between the inner and outer surfaces of each garment is the same,

    asked by Cj on April 13, 2007
  27. Chemistry

    Temperature Rate Constant 310 0.830 320 2.27 330 5.83 340 14.2 350 32.8 Use an Arrhenius plot to determine the frequency factor for the reaction. I know the equation to find the frequency factor is K= Ae^-Ea/RT but i am still getting the wrong answer. Do I

    asked by Tc on September 19, 2011
  28. physics

    The label on a soft drink states that 11 fl. oz (325 g) provides 285 kcal. The drink is cooled to 12.0°C before it is consumed. It then reaches body temperature of 37°C. Find the net energy content of the drink. (Hint: You can treat the soft drink as

    asked by Bruce on July 23, 2012
  29. Chemistry

    A calorimeter contains 22.0 mL of water at 14.0 C. When 2.50 g of X (a substance with a molar mass of 66.0 g/mol) is added, it dissolves via the reaction X(s)+H_2O(l)--------> X(aq) and the temperature of the solution increases to 25.5 C. Calculate the

    asked by Amanda on April 2, 2012
  30. Science

    For a reaction to occur, the energy of the system must meet the activation energy threshold. Which best explains why increasing the temperature increases the rate of a reaction? A) Because more particles spread out away from each other B) Because more

    asked by Kaylee on February 15, 2019
  31. physics

    Here's a physics problem. I don't care about the answer, i just want to know how to do it. don't have to be too detailed.. but i don't really kno how to start this 1.) A model rocket blasts off from the ground rising straight upward with a constant

    asked by jo on September 18, 2010
  32. Math

    I am having a hard time with these problems and could you show me how to work them so next time i will know how. find the first and third quartiles of Q and Q of the set of numbers 11,12,16,14,14,14,8,12,10,18 find any outliers ( if any) in the set of

    asked by Gertrude Sanders on November 8, 2008
  33. Math

    How do you figure this problem out? How many different committees can be formed from 5 professors and 15 students if each committee is made up of 2 professors and 10 students? THANKS!!!!! The limiting factor is the students. You only have enough for one

    asked by Haley on September 25, 2006
  34. Physics

    A 1.4-kg object moves along the x axis, subject to the potential energy shown in the figure. If the object's speed at point B is 1.70 m/s, what are the approximate locations of its turning points? ___________m (left-hand turning point) ___________m

    asked by Anonymous on May 2, 2015
  35. Physics

    A block of mass 11.2 kg slides from rest down a frictionless 24.0° incline and is stopped by a strong spring with a spring constant 31.3 kN/m (note the unit). The block slides 8.90 m from the point of release to the point where it comes to rest against

    asked by Serena on October 25, 2014
  36. Physics

    A plank, of length L = 3.7 m and mass M = 19.6 kg, rests on the ground and on a frictionless roller at the top of a wall of height h = 1.70 m (see Figure). The center of gravity of the plank is at its center. The plank remains in equilibrium for any value

    asked by Anonymous on September 17, 2018
  37. Physics

    A car with a mass of 950 kg and an initial speed of v1 = 21.5 m/s approaches an intersection, as shown in the figure. A 1300 kg minivan traveling northward is heading for the same intersection. The car and minivan collide and stick together. If the

    asked by Will on October 19, 2008
  38. Trigonometry

    John stands on top of a little lighthouse looking out at a nearby tall lighthouse that is 200 feet away. He looks at the top of the tall lighthouse with a 3 degree angle of elevation, but looks at the bottom of the tall lighthouse with 6 degree angle of

    asked by Ariana on February 24, 2016
  39. math

    Nala and her cousin agreed that they would each mow one-half of the lawn. The lawn is a 25' by 45' rectangle. The lawn mower cuts a path two feet wide. Nala starts at one corner and mows a path completely around the outside, and then continues to mow the

    asked by Elizabeth on September 21, 2014
  40. Math HELP

    A man is walking at an average speed of 4 miles per hour alongside a railroad track. A freight train, going in the same direction at an average speed of 30 miles per hour, requires 5 seconds to pass the man. How long is the freight train? Give your answer

    asked by Amy on October 5, 2010
  41. physics

    A freight company uses a compressed spring to shoot 2.00 kg packages up a 1.00-m -high frictionless ramp into a truck, as the figure shows. The spring constant is 481 N/m and the spring is compressed 30.0 cm . A. What is the speed of the package when it

    asked by Anonymous on November 13, 2010
  42. Movement and Music

    Can you please check my semester exam before I turn it in? 1. Children who do poorly in school are primarily ______ learners. a. Auditory b. Kinesthetic c. Spatial d. visual My answer: c 2. A movement program that emphasized divergent problem solving,

    asked by Cyn on February 7, 2013
  43. chemistry

    The enthalpy of combustion of benzoic acid (C6H5COOH) which is often used to calibrate calorimeters, is −3227 kJ/mol. When 1.402 g of benzoic acid was burned in a calorimeter, the temperature increased by 3.401 ◦ C. What is the overall heat capacity of

    asked by Austin on October 2, 2012
  44. physics

    how to determine the amount of water in the container when you are given a 200g piece of aluminium at 90 degrees celcius is placed in a 100g glass container which holds an unknown amount of water at 20 degrees celcius .if the equilibrium temperature is

    asked by vuyo on September 29, 2014
  45. Chemistry

    The enthalpy of combustion of benzoic acid(C6H5COOH) which is often used to calibratecalorimeters, is −3227 kJ/mol. When 1.316 gof benzoic acid was burned in a calorimeter, the temperature increased by 2.226◦C. What is the overall heat capacity of the

    asked by Yannan Huang on August 3, 2012
  46. Intro to Physics

    (a) An ideal gas occupies a volume of 3.0 cm3 at 20°C and atmospheric pressure. Determine the number of molecules of gas in the container. _____________molecules (b) If the pressure of the 3.0-cm3 volume is reduced to 2.4 × 10−11 Pa (an extremely good

    asked by Madison on November 14, 2012
  47. Physics

    Suppose 2100 J of heat are added to 3.3 mol of argon gas at a constant pressure of 120 kPa. (Assume that the argon can be treated as an ideal monatomic gas.) A) Find the change in internal energy. B) Find the change in temperature for this gas. C)Calculate

    asked by sarah on April 17, 2015
  48. chemistry

    explain why the pure solvent shows a level horizontal curve as solidification occurs, but the curve for the solution slopes downward slightly. The solvent is BHT and the added particles are an unknown compound. My reasoning is that it happens because the

    asked by Unsure on January 26, 2009
  49. chemistry

    The enthalpy of combustion of benzoic acid (C6H5COOH) which is often used to calibrate calorimeters, is −3227 kJ/mol. When 1.402 g of benzoic acid was burned in a calorimeter, the temperature increased by 3.401 ◦ C. What is the overall heat capacity of

    asked by Austin on October 2, 2012
  50. physics

    Question Part Points Submissions Used 1 –/1 0/2 Total –/1 A rigid tank contains 1.40 moles of an ideal gas. Determine the number of moles of gas that must be withdrawn from the tank to lower the pressure of the gas from 21.6 atm to 5.90 atm. Assume the

    asked by Sarah on November 23, 2011
  51. physics

    A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 16.0 m/s. The cliff is h = 25.0 m above a flat horizontal beach, as shown in the figure below. How long after being released does the stone strike the

    asked by joanna on February 4, 2016
  52. Math

    I cannot figure this problem out. I have did it several ways and get conflicting answers. Give an estimate for the following expression: 12*26. Then state whether you believe that the exact answer is greater than or less than the estimate. Explain how you

    asked by B.B. on June 10, 2009
  53. physics

    Cliff and Will are carrying a uniform 2.0m board of mass 69kg. Will is supporting the board at the end while cliff is 0.6m from the other end as shown in the following figure. Cliff has attached his lunch to his end of the board, and the tension in the

    asked by brett on February 23, 2012
  54. alg.

    Find the slope of the line passing through the points (–2, 1) and (3, 9). I know the equation to figure this out is: m = y(2) + y(1) ----------- x(2) + x(1) but its a multiple choice question and my answer is not the same as the choices. how exactly do I

    asked by lacy on July 30, 2007
  55. math

    Okay, so there is circle S. There are two tangents of this circle that intersect, so it almost looks like a cone? the angle of the intersected tangents is 20º. The arc that the "cone" intersects is 4x. I have to figure out what X is. THe answer is 110 but

    asked by Emily on March 21, 2007
  56. pysics

    A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 16.0 m/s. The cliff is h = 25.0 m above a flat horizontal beach, as shown in the figure below. How long after being released does the stone strike the

    asked by lisa on February 5, 2016
  57. biology (check answers)

    1. How do endothermic and exothermic reactions differ? a. Endothermic reactions release energy and are spontaneous. b. Exothermic reactions release energy and are spontaneous. c. Endothermic reactions give off heat and light. d. Photosynthesis is

    asked by Dizzie on October 3, 2016
  58. biology (check answers)

    1. How do endothermic and exothermic reactions differ? a. Endothermic reactions release energy and are spontaneous. b. Exothermic reactions release energy and are spontaneous. c. Endothermic reactions give off heat and light. d. Photosynthesis is

    asked by Dizzie on October 2, 2016
  59. Science

    Prior to the detonation of the first atomic bomb, had the scientist been able to prove by theory that the reaction would stop? I assume they did considering they continued with the test. If not, how was Bethe able to calculate the yield of the explosion?

    asked by Dave on June 25, 2007
  60. Math

    ) If you are standing near the edge of the top of a 200 ft. building and throw a ball vertically upward it will be modeled by the function 𝑠(𝑡) = −16𝑡2 + 64𝑡 + 200 where s(t) is the balls height above ground in feet and t is seconds after the

    asked by Kevin on December 4, 2014
  61. PreCalc

    A contractor plans to build an artist's studio with a roof that slopes differently on the 2 sides. On one side, the roof makes an angle of 33 degrees with the horizontal. On the other side, which has a window, the roof makes an angle of 65 degrees with the

    asked by Neha on January 3, 2011
  62. Physics

    Two cars collide as shown in the figure. The yellow car is initially heading east and has a mass of 1000 kg. The red truck is initially heading north and has a mass of 2000 kg. The two vehicles collide, stick together, and veer off at a velocity of 16 m/s

    asked by David on November 10, 2015
  63. physics

    A 50 kg uniform ladder, 5.0 m long, is placed against a smooth wall at a height of h = 3.7 m. The base of the ladder rests on a rough horizontal surface whose coefficient of static friction is 0.40. An 80 kg block is suspended from the top rung of the

    asked by george on October 29, 2012
  64. Physics

    Consider the system shown in the figure with m1 = 25.00 kg, m2 = 10.20 kg, R = 0.18 m, and the mass of the uniform pulley M = 5.00 kg. Object m2 is resting on the floor, and object m1 is 4.00 m above the floor when it is released from rest. The pulley axis

    asked by Chris on April 8, 2009
  65. Chemistry

    25.9 kJ + 1/2 H2 + 1/2 I2 -> HI B) how much energy is needed for the reaction of 4.57E24 molecules of iodine, I2, with excess hydrogen, H2? How does the "excess" hydrogen come into play? I mean, what's the significance of having excess H2 and how do I

    asked by A Canadian on February 6, 2013
  66. physics

    A 50 kg uniform ladder, 5.0 m long, is placed against a smooth wall at a height of h = 3.7 m. The base of the ladder rests on a rough horizontal surface whose coefficient of static friction is 0.40. An 80 kg block is suspended from the top rung of the

    asked by jenn on November 16, 2012
  67. Kinetic energy

    steel ball of mass 0.310 kg is fastened to a cord that is 86.0 cm long and fixed at the far end. The ball is then released when the cord is horizontal, as shown in the figure. At the bottom of its path, the ball strikes a 3.10 kg steel block initially at

    asked by Anonymous on April 26, 2015
  68. math

    Small cubes with edge lengths of 1/4 inch will be packed into the right rectangular prism. The dimensions are 4 1/2 inches in length, 5 inches in width, and 3 3/4 inches in height. Each cube is 1/4 inches. How many small cubes are needed to completely fill

    asked by Troy on April 30, 2015
  69. phys

    Two blocks of mass m1 = 1.70 kg and m2 = 5.20 kg are connected by a massless cord passing over a frictionless pulley as shown in the figure below, with θ = 41.0°. The coefficient of kinetic friction between block 1 and the horizontal surface is 0.400,

    asked by victpr on October 1, 2016
  70. Physics Hw Help Please

    The Burj Khalifa in Dubai is the world\'s tallest building. The structure is 828 m (2,716.5 feet) and has more than 160 stories. A tourist is obviously using the elevator to reach their hotel room and after a long ride finally arrives at the correct floor

    asked by Michael on November 11, 2012
  71. physics

    The figure below shows two objects with masses m and M which are connected with a taut string running over a pulley. The pulley rotates without friction. The two masses are given as M = 393 g and m = 181 g. A second taut string connects the heavier object

    asked by m2a2 on September 27, 2009
  72. english llit

    I am still trying to figure out the meter in the poem On the Amtrak from Boston to New York City. Looking at the types of meter I narrowed it down to iambic pentameter and anapestic. I thought the meter was anapestic because of the 2 unaccented syllables

    asked by m on November 6, 2011
  73. Physics

    The helicopter view in the figure below shows two people pulling on a stubborn mule. Assume that F1 is 130 N, and F2 is 65 N. The forces are measured in units of newtons (N). (a) Find the single force that is equivalent to the two forces shown. In both

    asked by anne on May 18, 2011
  74. Chemistry

    If a solution containing 52.044 g of mercury(II) chlorate is allowed to react completely with a solution containing 15.488 g of sodium sulfate, how many grams of solid precipitate will be formed? How many grams of the reactant in excess will remain after

    asked by Chelsea on October 13, 2013
  75. business information system

    ROI & NPV: wireless order-tracking system I need to identify the ROI and NPV of the wireless order-tracking system. Here is the information I have been given: - The acquisition cost is $35,000 paid at the time of installation. - It reduces the wait staff

    asked by Beatrice on September 2, 2010
  76. math

    ALWAYS use significant figure rules. Remember that these rules apply to all numbers that are measurements. A missile is fired from a jet flying horizontally at Mach 2 (2200 ft/s). The missile has a horizontal acceleration of 1000 ft/s2. Calculate its

    asked by Caden Williams on March 27, 2019
  77. Physics

    john and Sarah participated in a roller skating show. while 75kg john skated backwards at 3.00m/s, 60kg Sarah jumped into his arms with a velocity of 5m/s in the same direction. a. how fast did the pair roll backwards together? b. if john instead skated

    asked by phillip on December 1, 2011
  78. Physics

    A ring (hollow cylinder) of mass 2.89kg, inner radius 5.35cm, and outer radius 6.35cm rolls (without slipping) up an inclined plane that makes an angle of θ=35.6°, as shown in the figure below. At the moment the ring is at position x = 1.87m up the

    asked by Tim on July 4, 2016
  79. Physics

    Suppose your car was mired deeply in the mud and you wanted to use the method illustrated in the figure to pull it out. T = 11000 N A. What force would you have to exert perpendicular to the center of the rope to produce a force of 11000 N on the car if

    asked by Stephanie on October 9, 2014
  80. Finance

    ROI & NPV: wireless order-tracking system I need to identify the ROI and NPV of the wireless order-tracking system. Here is the information I have been given: - The acquisition cost is $35,000 paid at the time of installation. - It reduces the wait staff

    asked by jackie on April 11, 2010
  81. Physics

    A ring (hollow cylinder) of mass 2.89kg, inner radius 5.35cm, and outer radius 6.35cm rolls (without slipping) up an inclined plane that makes an angle of θ=35.6°, as shown in the figure below. At the moment the ring is at position x = 1.87m up the

    asked by Andrea on July 5, 2016
  82. Physics

    The ship in the figure below travels along a straight line parallel to the shore and a distance d = 580 m from it. The ship's radio receives simultaneous signals of the same frequency from antennas A and B, separated by a distance L = 700 m apart. The

    asked by Jen on March 29, 2014
  83. Physics

    Let mass be: m1=0.100 kg m2=0.300 kg m3=0.500 kg (a.)Compute for the acceleration of the system if the table is frictionless. (b.)Compute the acceleration of the system if the coefficient of the friction between the m2 and the table is 0.400. You can't

    asked by frosty on September 10, 2006
  84. Physics

    For a scene in a movie, a stunt driver drives a 1.50×103kg SUV with a length of 4.30m around a circular curve with a radius of curvature of 0.333 km (Figure 1) . The vehicle is to be driven off the edge of a gully 10.0 m wide, and land on the other side

    asked by Joe on October 15, 2013
  85. Psychology/Statistics

    Do students at various universities differ in how sociable they are? Twenty-five students were randomly selected from each of three universities in a region and were asked to report on the amount of time they spent socializing each day with other students.

    asked by Charles on March 8, 2010
  86. statitics

    17. Do students at various universities differ in how sociable they are? Twenty-five students were randomly selected from each of three universities in a region and were asked to report on the amount of time they spent socializing each day with other

    asked by Anonymous on October 10, 2010
  87. statistics

    Do students at various universities differ in how sociable they are? Twenty-five students were randomly selected from each of three universities in a region and were asked to report on the amount of time they spent socializing each day with other students.

    asked by JDec on February 11, 2010
  88. probability and statistics

    Chapter 9: 17. Do students at various universities differ in how sociable they are? Twenty-five Students were randomly selected from each of three universities in a region and Were asked to report on the amount of time they spent socializing each day with

    asked by Dianne on November 11, 2010
  89. College statistics

    Do students at various universities differ in how sociable they are? Twenty-five students were randomly selected from each of three universities in a region and were asked to report on the amount of time they spent socializing each day with other students.

    asked by Ashley on September 5, 2011
  90. physics

    Two blocks of masses M and 3M are placed on a horizontal, frictionless surface. A light spring is attached to one of them, and the blocks are pushed together with the spring between them as shown in the figure below. A cord initially holding the blocks

    asked by Jackie on January 23, 2011
  91. physics

    Two blocks of masses M and 3M are placed on a horizontal, frictionless surface. A light spring is attached to one of them, and the blocks are pushed together with the spring between them as shown in the figure below. A cord initially holding the blocks

    asked by Jackie on January 23, 2011
  92. histroy

    . When the diplomats met to negotiate the treaty ending the Revolutionary War, the process was a. quick and easy, combat had already settled all the important issues b. slow and painful, because the britsh could not admit that they had lost c. slow and

    asked by kyle on September 14, 2008
  93. English

    What winter sport do you like most? 1. I lke curling because it's fun to see players hit big stones. 2. I like bobsledding because it's thrilling to ride a bobsled. 3. I like speed skating because I like wild races. 4. I like ski jumping because I like

    asked by rfvv on October 3, 2014
  94. statistics

    . Do students at various universities differ in how sociable they are? Twenty-five students were randomly selected from each of three universities in a region and were asked to report on the amount of time they spent socializing each day with other

    asked by Anonymous on December 7, 2010
  95. statistics

    Do students at various universities differ in how sociable they are? Twenty-five students were randomly selected from each of three universities in a region and were asked to report on the amount of time they spent socializing each day with other students.

    asked by JDec on February 11, 2010
  96. statistical psychology

    Do students at various universities differ in how sociable they are? Twenty-five students were randomly selected from each of three universities in a region and were asked to report on the amount of time they spent socializing each day with other students.

    asked by Anonymous on August 17, 2010
  97. Math

    Is this correct? The inside of your refrigerator might be set to a temperature of about____. My answer is 2.9 degrees Celsius because the choices are: A) -2.9 degrees Celsius B) 29 degrees Celsius C) 2.9 degrees Celsius D) 43.5 degrees Celsius. Thanks.

    asked by B.B. on September 6, 2009
  98. Physics

    In a huge oil tanker, salt water has flooded an oil tank to a depth of h2 = 4.50 m. On top of the water is a layer of oil h1 = 7.55 m deep, as in the cross-sectional view of the tank as shown in the figure. The oil has a density of 0.700 g/cm3. Find the

    asked by Courtney on October 28, 2014
  99. Climate Change

    In a Business 'As usual senario,' global CO2 emissions reach 64 GtCO2 y -1 by 2050. Convert this figure to GtC y-1, and calculate the percentage increase from the level of global CO2 emissions in 2004, estimated as 8.8 GtC y-1. Lets see... carbon is what

    asked by Tania on June 13, 2007
  100. Calculus

    The burning candle A candle is placed a distance l1 from a thin block of wood of height H. The block is a distance l2 from a wall as shown in Figure 7.1. The candle burns down so that the height of the flame, h1 decreases at the rate of 3 cm/hr. Find the

    asked by Fee on October 26, 2010