1. physics

    Consider a room air conditioner using a Carnot cycle at maximum theoretical efficiency and operating between the temperatures of 19.7°C (indoors) and 28.7°C (outdoors). For each 1.00 J of heat flowing out of the room into the air conditioner a) How much
  2. comtemporary business Communication

    What are the main formatting differences between the memo and the academic paper? In what ways do audience, purpose, tone, and structure affect the formatting of the memo and the paper?
  3. health

    12. A pathology report shows adenocarcinoma. What type of information should also appear in this report? A. Tissue structure B. Presence of cancer in an organ C. Condition of a particular organ D. Condition of the heart I think the answern is A.
  4. Early childhood

    Can someone check if this is correct? Of all ages, ages four year olds need the most a) challenge and variety b) love and attention c) structure and discipline d) freedom and spontaneity I think it's a or d but I think a) challenge and variety more????
  5. English Sentence structure

    All people have their own perspectives of war as being ideological human activity. or All people have their own perspectives of war a being idelogical. Which one of these is correct? If not how can i fix it. Thank You
  6. Science asap!!!

    This question is about energy efficiency. e.g. more efficient A= B C D E Less Efficient my question An old freezer has an energy consumption per year of 350kwh use the equation in the box to calculate the extra cost of using the old freezer for one year
  7. statistics

    Below are the top 20 U.S. football teams in the seventh and eighth weeks of the 2003 season, along with the points awarded to each team by the ESPN/USA Today coaches poll. Research question: At á = .01, based on this data, is there a significant rank
  8. English

    1.Once order had been restored, the leaders of the opposion called for the (revocation, keepsake) of martial law. I think revocation is answer 2. Since you are the only one of us who has had experience with this kind of problems, we shall do whatever you
  9. Physical Science

    The physical properties of ice are different from the physical properties of dry ice (frozen carbon dioxide). But the physical properties of gaseous water vapor and the physical properties of gaseous carbon dioxide are the same. Why? A.) The valence
  10. biology

    Explain parts of the stem structure in the lilac flower or a flower similar to the lilac flower
  11. Systems Analysis, Design, and Implementation

    May anyone help me on this 1- what are the Disadvantages of Structure Analysis? 2- what are the Disadvantages of Object-Oriented Analysis? Thanks
  12. History

    “...[The] said Cooper Hughs Freedman with his wife...are to work on said farm and to cultivate forty acres in corn and twenty acres in cotton, to assist in putting the fences on said farm in good order and to keep them so and to do all other work on said
  13. Chemisty

    Let's explore the efficiency of chloride ion precipitation in seperating Ag^+ from Pb^2+ in a solution. Suppose that [Pb^2+]= 0.045 mol/L and [Ag^+]= 0.084 mol/L. Calculate the chloride ion concentraion required to just start precipitation of Pb^2+ ion and
  14. Chemistry

    Why is this Alkene structure: CH3 - CH = C - CH3 | Cl called 3, chloro - 2, butene and not 2, chloro - 2, butene? I thought that the counting starts at the end closes to the first substituent? Wouldn't that make it start from the right? Thanks!
  15. chemistry

    2. Create a visual representation of ionic substances to connect the microscopic structure of ionic substances to each of the following macroscopic properties. a. Solubility in polar compounds (1 point) b. Brittleness (1 point)
  16. integrated chemistry and physics

    In a water molecule, two hydrogen atoms bind to one oxygen atom. How many lone pairs of electrons will be shown around each hydrogen atom in the Lewis structure of water?
  17. math

    Shelby walks at a constant rate. the equation that represents this relationship is d=4t, where d is the distance in miles and t is the time in hours. What does the constant 4 tell you about shelby? Make use of structure. What question is answered by the
  18. Medical Terminology

    The Histology report showed adenocarcinoma. What type of information appears in this report? A. Tissue structure B. Presence of cancer in an organ C. Condition of a particular organ D. Condition of the heart
  19. Physics

    Rotating cylinders are not just physical abstractions: for example, they can turn a flow of the air, thus creating lift as the airplane wings. Historically people have even used rotating cylinders to power ships (although with little efficiency). NASA
  20. physics

    If an electron is localized in space ,its momentum becoms uncertain.If it is localized in time ,its energy becomes uncertain.explain this statement.
  21. Math Help

    Explain what is meant by an experiment. Give an example. For the example you have chosen, describe (a) a sample point, (b) the sample space, and (c) an event of the experiment.
  22. physics

    why does an heater with a fan is more efficient than a similar heater that doesn't have a fan? It distributes the heat throughout the space (room) that is being heated.
  23. Help Math

    The sample space for a roll of two number cubes is shown in the table. (1,1)|(1,2)|(1,3)|(1,4)|(1,5),(1,6) (2,1)|(2,2)|(2,3)|(2,4)|(2,5)|(2,6) (3,1)|(3,2)|(3,3)|(3,4)|(3,5)|(3,6) (4,1)|(4,2)|(4,3)|(4,4)|(4,5)|(4,6) (5,1)|(5,2)|(5,3)|(5,4)|(5,5)|(5,6)
  24. Linear Algebra

    Prove that If a vector space is of dimension n and a set of vectors spans V, then that set of vectors must be linearly independent.
  25. physical science

    What physical law states: When an object nears a massive celestial object in space, it is attracted to its gravity
  26. Calculus

    Consider a hemispherical bowl of radius 10cm. (4 points) If the water level in the bowl is h cm deep, find the radius of the surface of the water as a function of h. (6 points) The water level drops at a rate of 0.1 cm per hour. At what rate is the radius
  27. Maths

    Question – 1: The gradient of the graph of f(x) at any point is,ax^2-12x + 9, and the point,(2,-3),is an inflection point of f(x). (a) Find the value of the real constant, a. Find the function f(x). (b) Find the stationary points of the function, then
  28. physcial science

    Which of the following statements about Ohm’s Law is true? A. Increasing the voltage decreases current. B. Keeping the same voltage and decreasing resistance decreases the current. C. Ohm’s law relates power, current and resistance. D. To increase the
  29. math-calc

    Consider the function f(x)= (2x+8)/(6x+3). For this function there are two important intervals: (-inf, A) (A, inf) and where the function is not defined at A . Find A For each of the following intervals, tell whether is increasing (type in INC) or
  30. programming

    Write a MATLAB program to create and output the touch-tone telephone signals (Dual-Tone, Multi-Frequency, DTMF) for the input numbers 0 through 9 (disregard the * and # symbols). When a user presses a button on a telephone set, a signal is produced that is
  31. Science HELP!!!!

    1.To study a rock sample, geologists observe the rock's mineral, composition, color, and temperature. true false*** 2.finds a rock with layers and smaller pieces of other rocks embedded in it. the rock is most likely A igneous B sedimentary*** C
  32. Math

    Ms Washington buy a refrigerator that is 6 feet high, 3feet deep and 4 feet wide ,how many floor space does she need to fit the refrigerator
  33. Math

    A 8-kilometer roadway under construction is being completed at space of one-length of its length per week. After 5 weeks, how many meters remain to be completed? Help? hard..
  34. Math

    barry puts TVs on a 15-foot shelf in his electronics store. He allows 2 1/2 feet of space for each TV. He will be able to put 5.5 TVs on the shelf. Is this reasonable or not
  35. math (Ms.Sue)

    your room has 2 windows.Each window occupies 11.76 square ft of wall space.if the windows are each 2.8 ft wide,how tall is each window? my answer is 4.2 ft,am i right? if not tell why.
  36. Science---Hurry Please Help!

    If Earth were located where Mars is in space, the temperature of Earth would A) be significantly higher. B) be significantly lower. C) be about the same. D) fluctuate greatly. B maybe?
  37. space

    gowing 10,00 miles per hour how long will it take to get to jupiter from earth with earth the sun and jupiter alined like a straight line or just an estimation
  38. Mechanics

    A 60 kg astronaut floating in space outside the capsule throws his half kg hammer such that it moves with a speed of 10m/s relative to the capsule. What happens to the astronaut?
  39. Science

    How many minutes are required for a radio signal to travel for Earth to a space station in Mars if the planet Mars is 7.83 x 10 to the 7th km from Earth?
  40. physics

    A charge of -4.50 10-6 C is placed at a point in space where the electric field is directed toward the right and has a magnitude of 9.00 104 N/C. What are the magnitude and direction of the electrostatic force on this charge?
  41. math 101

    a student has ten posters to pin up on the wall of her room, but there is space for only seven. in how many ways can she choose the posters to be pinned on the wall?
  42. math helpppp?!

    A family has two children. M represents male, and F represents female. What is the sample space for the gender of the children? {F, M} {FM, FF, MM, MF} <my answer choice {FF, MM} {MF, FM}
  43. geometry

    you plan to carpet 468ft of space. carpet costs $26.75 per square yard and the tax is 7%. the carpet is sold in 12 ft rolls. what is the cost of the carpet?
  44. Physics!

    A person is standing on a 10-m bridge above a road. He wants to jump from the bridge and land in the bed of a truck that is approaching him at 30 m/s. In order to clear the bridge railing, he has to jump upward initially with a speed of 5 m/s. How far away
  45. physics

    somewhere between earth and the moon gravity from these two bodies on a space pod would cancel. Is this location nearer to earth or the moon?
  46. physics

    the elecric potential at a certain point is space is 12 V. What is the electric potential energy of a -3.0uc charge placed at that point? is it +36uj?
  47. Physics

    A space habitat is designed so that the variation in g between a person's head and feet is less than 0.01 g If the person is 2 m tall then the radius of the habitat is?
  48. physics

    Two spacecraft in outer space attract each other with a force of 45 N. What would the attractive force be if they were \frac{1}{5} as far apart? F_{attractive} = _____________N (no rounding up)
  49. calculus help thanks!

    The gas law for an ideal gas at absolute temperature T (in kelvins), pressure P (in atmospheres), and volume V (in liters) is PV = nRT, where n is the number of moles of the gas and R = 0.0821 is the gas constant. Suppose that, at a certain instant, P =
  50. World history; Check:P Added sentences.

    Write a one paragraph essay on how developments in technology influenced the rise and decline of the Assyrian Empire. The Assyrians were the first to use iron in their weapon works. They used it in spears, swords, shields and armor. They had the most
  51. math

    Karl piled twelve 1" cubes in three layers on top of a square made with four 1" cubes. What shape is the structure that Karl made?
  52. role of and health care/nursing role

    in health care what trends do you anticipate influencing curriculum content and structure in the next decade?
  53. chemistry

    what is the molecular geometry of trans-difluroethylene: trans-C2H2F2? I know how to draw the lewis structure but I'm not sure how to find the molecular geometry. I think it's a tetrahedral
  54. Science 7R - Worksheet (Q5)

    ********* Sorry I post too much question but these are the questions I'm having trouble with, the other questions on my science worksheet i done it by myself This is the last one I need help with and that's it E. How is the structure of a bone related to
  55. Chem

    What structure do you get when you mix benzoic acid with H3O+? Where benzoic acid is a benzene ring with COOH attached to one of the hydrogens in the ring? Please help!
  56. economics

    how change in "Consumer Taste" and "Change in Expectation" effect upon Supply and Demand in Economic? In a plenitude of ways. Fashion and other fads come and go, increasing the demand for "hot" products, decreasing for "cold." Producers, in an attempt to
  57. Chemistry

    Calculate the half-life (in s) of a first-order reaction if the concentration of the reactant is 0.0655 M 18.4 s after the reaction starts and is 0.0173 M 41.2 s after the reaction starts. I got 25.6 Suppose the half-life is 23.7 s for a first order
  58. Microsooft PP

    You're creating a table for one of your slides, and need to make some modifications to your table structure. Which of the following options can you perform by right-clicking inside the table? A. Create SmartArt B. Merge cells C. Invoke Excel spreadsheet D.
  59. The practice of working with school age children

    The temporal dimension of the environment refers to the way that A.The children, staff, and parents are organized in the program. B. structure of the site is composed. C. nurturing is encouraged in the program. D. time is managed in the program D.
  60. Chemistry

    Based on the following observations for 3 unidentified metals (Z, X, and D) and solutions of their metal cations (Zn+ and En+), rank the metals in terms of reducing agent strength, from lowest to highest. -When metal X is placed in an aqueous solution of
  61. Geometry

    Jason designed an arch made of wrought iron for the top of a mall entrance. The 11 segments between the two concentric circles are each 1.25 m long. Find the total length of wrought iron used to make the structure. Round the answer to the nearest meter.
  62. math

    nina designed an arch made of wrought iron for the top of a mall entrance. the 11 segmentsbetween the two concentric semicircles are each 3 ft long. find the total length of the wrought iron used to make this structure. round your answer to the nearest
  63. Cosmology

    How do we explore the large-scale structure of the Universe in the modern day? - Using large spectroscopic redshift surveys. - By accurately measuring positions of nearby galaxies. - By observing galaxies in the Local Supercluster. - By studying clusters
  64. English

    Rephrase the main idea of the sample in your own words, without repeating words or sentence structure from the original statement. "Right now, smartphones are selling like mad in the U.S. market, where sales jumped 84 percent between 2007 and 2008,
  65. english

    Writers often make common errors by adding improper punctuation. Identify and explain the sentence structure error in the following sentence: Terrance has collected sand from all of the exotic islands he’s visited, his favorite sample is the green sand
  66. English

    Which of the following is NOT a way in which the novel differs from the short story? A. The novel employs multiple subplots. B. The novel more fully develops characters. C. The novel has a larger number of characters. D. The novel employs a traditional
  67. physics

    A 250. MW coal-fired power plant burns fuel with an energy density of 35.0 MJ kg-1. Water enters the temp reduction tower at 293 K and leaves at 350. K at a rate of 4200. kg s-1. 4. Calculate the energy removed by the water each second. 5. Calculate the
  68. physics

    A 250. MW coal-fired power plant burns fuel with an energy density of 35.0 MJ kg-1. Water enters the temp reduction tower at 293 K and leaves at 350. K at a rate of 4200. kg s-1. 4. Calculate the energy removed by the water each second. 5. Calculate the
  69. math

    The average cost per item, C, in dollars, of manufacturing a quantity q of cell phones is given by C= (a/q) + b where a and b are positive constants a.Find the rate of change of C as q increases. What are its units? b. Currently, 5000 phones are being made
  70. math

    The average cost per item, C, in dollars, of manufacturing a quantity q of cell phones is given by C= (a/q) + b where a and b are positive constants a.Find the rate of change of C as q increases. What are its units? b. Currently, 5000 phones are being made
  71. Chem Help Please!!!

    Experiment Design You are asked to separate a mixture of toluene and cyclohexane. Assume that they do not form an azeotropic mixture. Design an experiment to do this. You must provide the following information. a) A diagram of the equipment you will be. b)
  72. Algebra

    Swimming space. The length of a rectangular swimming pool is 2x -1 meters, and the width is x + 2 meters. Write a polynomial a(x) that represents the area. Find A (5).
  73. optimization

    A model space shuttle is propelled into the air and is described by the equation y= (-x2/2e) +ex (in 1000 ft), where y is its height in feet above the ground. What is the maximum height that the shuttle reaches?
  74. earth/space

    Maribel places her backpack and lunch bag on a lab table where there are lab materials. What is the safest way for Maribel to arrange the items?
  75. math

    An experiment consists of flipping a coin 3 times and noting the number of times that a heads is flipped. Find the sample space S of this experiment. S=?
  76. math

    In the space below, indicate the values stored in the variables A,B,C, and D for the program. Enter your answers by typing in the value of A for Answer 1, value for B in Answer 2 and so on. Do this for all four variables.(8 points) 10 DATA 2,3,4,5 20 READ
  77. English

    Hello. I wonder if English has certain rules concerning word division (I mean when there isn't enough space for a word on the line (or-ga-nize). I will appreciate it if you give a reference (if any)to this material. Thank you for all your detailed answers.
  78. Physics

    On a cloudless day, the sunlight that reaches the surface of the earth has an intensity of about 1.2 103 W/m2. What is the electromagnetic energy contained in 6.4 m3 of space just above the earth's surface?
  79. Math

    The area of a rectangle mirror is 11 11/16 feet. The width is 2 3/4 feet. If there is a 5 foot tall space on the wall to hang the mirror will it fit explain.
  80. Calculus Optimization

    A model space shuttle is propelled into the air and is described by the equation y=-x^2/2e + ex (in 1000 ft), where y is its height above the ground. What is the maximum height that the shuttle reaches?
  81. Algebra

    Suppose a model of the space shuttle "Endeavour" is 10 inches tall. The actual height of the "Endeavour" is 100 feet. What is the scale of the model?
  82. physics

    Calculate the force needed to accelerate a 1 kg ball by 3 m/s: a. in space along way from the earth. b. on the ground in a direction horizontal to the ground. c. on the earth vertically upward.
  83. organic chem

    7. An unknown compound, C8H14, is optically active. Hydrogenation of the unknown yields 4-methylheptane. Ozonolysis of the unknown yields ethanol and 2- methylpropandial. Suggest a structure for the unknown consistent with the above date. please help
  84. English & Composition

    Flowers are as common here… as people are in London. I'm stuck on finding or making up a sentence example that is similar to this as far as parallel structure. I think the the example shows parallel Independent Clauses.. But I need help on creating a
  85. A LEVEL LAW

    where can we students find the best answers attempted by the highest scorers in past years on A level Law exam? can we get any clear answer structure which helps us know how to attempt an A grade answer?
  86. Physics

    Three cylinders with the same size, density and structure are piled on each other on top of a rough surface. Find the minimum angle which the direction of the force acting between the cylinders and rough surface makes with the vertical?
  87. Chemistry

    The distribution co-efficient of butanoic acid (pKa = 4.8) between water and two organic solvents are given below; Benzene D= 3.0 Octanol D= 6.2 a) which organic solvent is expected to extract the acid most efficiently from the water? explain your answer.
  88. math

    A baseball diamond is a square with side 90 ft. A batter hits the ball and runs toward first base with a speed of 19 ft/s. (a) At what rate is his distance from second base decreasing when he is halfway to first base? (Round your answer to one decimal
  89. astronomy & space

    What is the redshift of a galaxy which lies at a distance of 50 mpc, asssuming that the hubble constant is H_0 = 67 km s^-1 Mpc^-1? assume that the speed of light is c=3.0x10^5 Km s^-1 please answer to an accuracy of 2 sig figs. Thankyou.
  90. physics

    It has been suggested that rotating cylinders about 12.5 mi long and 4.88 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal acceleration at its surface equals the free-fall
  91. earth and space science

    Materials, such as water, that becomes gaseous easily at room temperature are called volatiles. How does the complete lack of volatiles in lunar rocks support the impact theory of the moon’s formation?
  92. physics

    In 1865, Jules Verne suggested sending people to the Moon by launching a space capsule with a 207.9 m long cannon. The final speed of the capsule must reach 11.31 km/s. What acceleration would the passengers experience?
  93. Physics

    I'm having trouble with this question. Some __ objects emit no visible light but are known through __ and radio images; satellite observations __ Earth's atmosphere help scientist study space at wavelengths that do not reach Earth's surface. If you can
  94. Physics

    In 1865, Jules Verne suggested sending people to the Moon by launching a space capsule with a 228.8 m long cannon. The final speed of the capsule must reach 11.39 km/s. What acceleration would the passengers experience?
  95. Physics

    In 1865, Jules Verne suggested sending people to the Moon by launching a space capsule with a 228.8 m long cannon. The final speed of the capsule must reach 11.39 km/s. What acceleration would the passengers experience?
  96. physics

    In 1865, Jules Verne suggested sending people to the Moon by launching a space capsule with a 207.9 m long cannon. The final speed of the capsule must reach 11.31 km/s. What acceleration would the passengers experience?
  97. Honors Biology - URGENT!!!

    Remember that the greater the concentration of hydrogen ions, the lower the pH of a solution. How do you suppose the pH of the solution in the thylakoid space compares with the pH of the solution in the stroma? What is responsible for the difference?
  98. Chemistry

    A small hole in the wing of a space shuttle requires a 12.8cm^2 patch. What is the patch's area in square kilometers (km^2)? if the patching material costs NASA 3.21/in^2, what is the cost of the patch?
  99. Child Care

    The basis of a good child-guidance system is the caregiver's A. arrangement of space in the facility. B. knowledge of child development C. choice of equipment D. schedule of activities. I chose B.
  100. history

    In which geographic region Texas is the NASA Johnson space center located A. Coastal Plains B. Great Plains C.Mountain and Basins D. North Central Plains I think the answer is B