1. physics

    why does an ideal fluid move faster through a pipe with decreasing diameter? a. the pressure within the fluid increases b. the pressure within the fluid decreases c. the pipe exerts more pressure on the fluid d. the fluid moves downhill C? the pressure in
  2. Intro Biology

    I can't find examples in the book as reference. Please help me with these questions and explain why. 1.) Which of the following has no vascular tissue (“plumbing system”)? A) Conifer B) Angiosperm C) Fern D) Moss E) Ginkgo 2.) Which of the following
  3. chemistry

    enzymes and substrates overall reaction: S -> P step 1: E + S -> ES fast step 2: ES -> E + S fast step 3: ES -> E + P slow what is the order of the reaction in E and what is the order of reaction in S?
  4. chemistry

    enzymes and substrates overall reaction: S -> P step 1: E + S -> ES fast step 2: ES -> E + S fast step 3: ES -> E + P slow what is the order of the reaction IN E and what is the order of reaction in S?
  5. chemistry help

    enzymes and substrates overall reaction: S -> P step 1: E + S -> ES fast step 2: ES -> E + S fast step 3: ES -> E + P slow what is the order of the reaction in E and what is the order of reaction in S?
  6. Math

    wut iz, 10+10+4=4x x=? do what the equation tells you 1)add 10+10+4 2)since in the other side of the eqaution you have 4x, in order to leave the X alone you must divide by 4 on both sides and you will get______ that is the value of X. 4)in order to make
  7. Calculus

    a local office supply store has an annual demand for 50,000 cases of photocopier paper per year. it costs $2 per year to store a case of photocopier paper, and it costs $50 to place an order. Find the optimum number of cases of photocopier paper per order
  8. Calculus

    A piece of wire 24 m long is cut into two pieces. One piece is bent into a square and the other is bent into a circle. (Give your answers correct to two decimal places.) (a) How much wire should be used for the circle in order to maximize the total area?
  9. Physics

    1. A steam engine converts 150 kg of water completely to steam. The process involves transfer of 4 x 10^8 J as heat. If steam escaping through the safety valve does 2 x 10^8 J of work against outside atmosphere, the net change in the internal energy is: a.
  10. Economic - Cost and benefit analysis

    i am not a spoon feeder, i just don't have any idea about these messy questions. ASSIGNMENT 5: DUE 4.00PM, 4/09/08 1. A competitive firm uses coal to generate electricity. Its supply curve is Q = 300P - 1000, where Q is quantity produced (units of
  11. Physics

    Can someone actually ANSWER the question pleas and post numerical answers. Under less than ideal conditions, a student pushes a 6 kg cart holding 2 boxes of books up a ramp to a platform that is 1.8 m high in 42 sec. Each box contains 12 kg of books. The
  12. Physics

    Given that electricity is priced at constant 13.5 pence per kWh and central heating oil (kerosine) varies in price between 39 pence and 137 pence per litre. What price does kerosine need to be to make heating domestic hot water cheaper using an immersion
  13. Physical Science

    In a pulley sytem with 100% effieciency with ten support cables. The input side reels 100 meters of cable. How far dis the output move? What is the value of the output force? In identical conditions at 70% efficiency, the cable does not stretch. How much
  14. physics

    At a certain location, the solar power per unit area reaching Earth's surface is 200 W/m^2, averaged over a 24-hour day.If the average power requirement in your home is 2.8 kW and you can convert solar power to electric power with 8.0 % efficiency, how
  15. physics

    At a certain location, the solar power per unit area reaching Earth's surface is 200 W/m^2, averaged over a 24-hour day.If the average power requirement in your home is 2.8 kW and you can convert solar power to electric power with 8.0 % efficiency, how
  16. informal Logic

    God must exist for there can be no other explanation for the order and complexity of the world. Some say there is no proof, but to me the proof is all around us. The conclusion of this argument is: (Points : 1) God exists There is no other explanation of
  17. math order from least to greatest

    can you check my work i need order least to greatest 6 problems. 1) 0.2222 1/5 0.02 i got: 0.2 0.2222 0.02 2) 1.1111 1 1/10 1.101 i got: 1.1 1.101 1.1111 3) 6/5 1 5/6 1.3333 i got: 1.2 1.3333 1.83333 4) 4.333 9/2 43/7 i got: 4.3333 4 3/7 9/2 5) 0.1333 2/75
  18. Biology

    J.J. Thomson's experiments supported the existence of a particle that deflected away from a negative charge and toward a positive charge. Ernest Rutherford found that when positive particles were fired at gold foil, some of the particles deflected rather
  19. geometry and combinatorics

    An equilateral triangle with side length 33 is divided into 33^2 smaller unit equilateral triangles each with side 1, forming a triangular lattice. We color each segment of length 1 either Red, Blue or Green, subject to the condition that each small unit
  20. 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)
  21. science

    What will eventually occur if in deep space an astronaut's wrench is outside the spacecraft moving with the same velocity as the spacecraft?
  22. physics

    A space vehicle accelerates uniformly from 70 at t = 0 to 172 at t = 10.0. How far did it move between = 2.0 and = 6.0 ? So I used the forumla d=vt+.5a(t)^2 but for a i got 10.2 since a=(172-70)/10 Now im stuck for v, what do i put for v?
  23. physics

    a spacecraft is traveling in space fa from any planets or stars. How much force is required to maintainthe spacecraft's speed?
  24. Earth Space

    Which branches of earth science would the hydrosphere interact with? I said biosphere, atmosphere, and geosphere. Is that correct?
  25. Geometry

    The area of a rectangular space is 128 square feet. What are the possible pairs of whole number dimensions in feet?
  26. science

    If you watch a movie scene in which a loud explosion occurs in the space. What do you conclude about the accuracy of the scene?
  27. Math

    A yard measures a x b feet the swingset space is a x c feet how much lawn is left after swing set
  28. guess and check sheet

    denzil list starts with the light show. Could the list start with the space first?
  29. physical

    calculate the force of gravity on a 1.2 x 10^5 kg space station at a distance of 3.5 x 10^5 m from earth's surface earth equal to 5.98 x 10^24 kg
  30. Algebra I

    Budget is 118,250.00. Write an algebraic expression that is 25% of budget for business space and utilities.
  31. Physics

    You are on the Moon and would like to send a probe into space so that it does not fall back to the surface of the Moon. What launch speed do you need?
  32. science

    An object is traveling in a straight line in space.No forces are affecting it. What will happen to the object's motion?
  33. algebra

    Moon - 240000 mi Jupiter - 391000000. The space vehicle would take how many days to reach Jupiter? Saturday,
  34. Astronomy Grade 9( PLEASEEE HELP!!!!!!!!!!!!!!)

    What hazards do humans face when they are in space and what technologies have been developed in response to these hazards?
  35. physics

    A space vehicle accelerates uniformly from 70 at t = 0 to 172 at t = 10.0. How far did it move between = 2.0 and = 6.0 ? So I used the forumla d=vt+.5a(t)^2 but for a i got 10.2 since a=(172-70)/10 Now im stuck for v, what do i put for v?
  36. CURRENT POSTS

    ALL POSTS BY MYSTERYCHICKEN TODAY CAN BE DELETED; THEY ARE TAKING SPACE AND ARE NOT NEEDED. [Note: Not y912f, just MC] Thanks!
  37. Educational Tech

    Which of the following elements of design is the only element that is not added to a design? 1) Typography 2) Shape 3) Color 4) Space
  38. Math

    a rectangle shape doctor's office has an area of 120 feet. what are the dimensions of this office space?
  39. Science

    Determine the frequency of a microwave 6.0 cm in length.( A microwave is an electromagnetic wave.It travels through space at a speed of 3.0 x 10 ^8 m/s)
  40. Physical Science

    A 75 kg astronaut in space pushes against a 200 kg navil. when the astronaut lets go of the anvil pushing it:
  41. math

    I'm building a new fence around my yard. The length is 20 ft. The width is 18 ft long. How much fence will I need to enclose the entire space?
  42. To Henri - applied mechanics

    When you re-post, be sure to put the SUBJECT AREA in the space marked SCHOOL SUBJECT. Thanks.
  43. Math

    The diameter of an atom is 2.3 x 10^ -8 centimeters. How many atoms can fit in a space .003 centimeters long, without exceeding it? Please help, thank you
  44. physics

    Two children float motionlessly in a space station. The 20-kg girl pushes on the 40-kg boy and he sails away at 1.0m/s. What happens to the girl?
  45. Motion Problems

    A satellite which travels around the earth has a power supply that provides power according to the formula: P =(17200)/(t + 100) where t is the number of days the satellite is aloft. Find the rate at which power is decreasing after 380 days. rate in
  46. math

    4 PART Your weight on different planets is affected by gravity. An object that weighs 150 pounds on Earth weighs only 56.55 pounds on Mars. The same object weighs only 24.9 pounds on the Moon. A)What percent of an object's Earth weight is its weight on
  47. math

    Electrical system are governed by Ohm's law, which states that V = IR, where V=voltate, I=current, and R=resistance. If the current in an electrical system is decreasing at a rate of 9 A/s while the voltage remains constant at 14 V, at what rate is the
  48. m

    If events A and B are from the same sample space, and if and , can events A and B be mutually exclusive? Explain.
  49. English

    Astronauts are learned, taught to survive in space. I think learned? ?
  50. Earth and Space Science

    which is closer to earth a moon or galaxy?
  51. help please

    if you are printing an essay on the comuter....can the essay be double line space?
  52. science

    I can travel where there are no molecules, but never through a brick. I can travel through space, but never around a corner. What am I?
  53. science

    I can travel where are no molecules,but never through a brick.I can travel through space,but never around a corner.What am I?
  54. chemistry

    Mercury(Hg) has a density of 13.5 g/cm cubed. How much space would 50.0 g of mercury occupy?
  55. English

    I left out the following sentences. Thank you. 1) Some schools valued their pupils' athletic achievements more than their academic ones. Team games became essential for inculcating discipline, obedience and sense of duty in the pupils. 2) Team games such
  56. physics

    3. A man lifts various loads with the same lever. The distance of the applied force from the fulcrum is 1.00 m, and the distance from the fulcrum to the load is 0.250 m. What is the mechanical advantage of the lever? What is the ideal mechanical advantage
  57. science

    A man lifts various loads with the same lever. The distance of the applied force from the fulcrum is 1.00 m, and the distance from the fulcrum to the load is 0.250 m. What is the mechanical advantage of the lever? What is the ideal mechanical advantage of
  58. physics

    A man lifts various loads with the same lever. The distance of the applied force from the fulcrum is 1.00 m, and the distance from the fulcrum to the load is 0.250 m. What is the mechanical advantage of the lever? What is the ideal mechanical advantage of
  59. Quantitative Methods

    The reorder point [see equation 14.6] is defined as the lead-time demand for an item. In cases of long lead times, the lead tie demand and thus the reorder point may exceed the economic order quantity Q*. In such cases, the inventory position will not
  60. English

    Hello. Please help me again. 1)I know it's possible to say "They entertained us to dinner", but is it possible to say "they entertained us to pizza" or "we were entertained to a cake"? 2)I asked a similar question, but if I change the structure, will I
  61. PNU

    An element has a body-centered cubic(bcc) structure with a cell edge of 288pm the density of the element is 7.2g/cm3. How many atoms are present in 208g of element
  62. Computer Programming using python

    Assume s is a string of lower case characters. Write a program that prints the longest substring of s in which the letters occur in alphabetical order. For example, if s = 'azcbobobegghakl', then your program should print Longest substring in alphabetical
  63. algebra

    A homeowner wishes to insulate her attic with fiberglass insulation to conserve energy. The insulation comes in 40-cm wide rolls that are cut to fit between the rafters in the attic. If the roof is 6 m from peak to eave and the attic space is 2 m high at
  64. chemistry -repost

    Still can't figure this one out-- sorry for reposting, this is the last post, if someone has time to review this question and see if they can figure out how the textbook got 1.0x10^-7 seconds Iodine combines to form I2 in liquid propane solvent with a
  65. math

    What are the steps of the order of operations? Why is it important that you follow the steps rather than solve the problem from left to right? Write an expression for your classmates to simplify using at least three of the operations from the order of
  66. half-life

    1. The half-life of a first-order reaction is 9.89 minutes. How many minutes will have elapsed after 27 half-lives? My answer is 267.03. 2. The half-life of a second-order reaction is 2.508 days. How many days will have elapsed after 8 half-lives? My
  67. calculus

    Please help me solve. I think increase = concave up and decrease = concave down? On the graph y = x^5-15x^3+10 for x what intervals is the function increasing, decreasing, concave up and concave down. Plot the critical points, plot and label the inflection
  68. science (check!)

    Which experimental approach would be most effective and easiest to clearly determine the evolutionary relationship between the starfish and green snake? a. sequence the same gene in both species to compare their similarity. b. dissect specimens of both
  69. English 9

    I have a question about the short story "Son" by John Updike. Is "Son told in a.order from the contemporary father and his memories and reflections b.reverse chronological order, from past to present c.fragments that are set in different time periods and
  70. Chemistry

    Magnesium sulfate is often used it first aid hot-packs giving off heat when dissolved in water. When 2.00 g of MgSO4 dissolves in 15.0 mL of water (d= 1.00g/mL) at 25.0ºC, 1.51 kJ of heat is evolved. A) Write the balanced equation for this reaction. I
  71. soc studies 3 questions pls help!!!

    8. Which of the resolutions at Seneca Falls Convention was most inspired by women’s inability to own property? (1 point) desire for improved education in order to understand property contracts belief that women should have voting rights in order to
  72. language arts

    abc order for geology geography geologist graphite autograph photograph biopsy biology biosphere transact enact actor react import transport portable export When you get them in ABC (alphabetical) order, please re-post and we'll let you know how you did. A
  73. calculus

    I have spilled 200cm^3 of vegetable oil on my kitchen floor. The resulting oil slick can be modeled as a cylinder with a very small height; the height is decreasing at a rate of 1/1000πcm/sec and the radius is currently 50cm. How quickly is the radius
  74. Math

    A satellite which travels around the earth has a power supply that provides power according to the formula: P = 17200/t + 100 where t is the number of days the satellite is aloft. Find the rate at which power is decreasing after 380 days. rate in watts/day
  75. business math

    You are the accountant for Suite Dreams, a retail furniture store. Recently, an order of sofas and chairs was received from the manufacturer with terms of 3/15, n/45. The order amounted to $230,000, and Suite Dreams can borrow money at 13% ordinary
  76. Business Math

    You are the accountant for Suite Dreams, a retail furniture store. Recently, an order of sofas and chairs was received from the manufacturer with terms of 3/15, n/45. The order amounted to $230,000, and Suite Dreams can borrow money at 13% ordinary
  77. math

    elow is a function the represents the sales for tickets to battle of the Bands Phoenix Music Festival. Student council needs students to buy ticket early in order to book a venue. In order to do this they made a piece scale as follows, where x is the days
  78. math

    (a) In order to express the function y = 1010 x + 4, as a composition of two functions the outer of which is an exponential function, we would let u be equal to the inner function, u = , and then write y as a function of u, as follows: y = . (b) In order
  79. Math

    Driving down a mounain Jim finds that he has descended 1800FT in elevation by the time he is 3.25 mi horizontally away from the top of the mountain find the slope of his decent to the nearest hundreth. I am sorry that you did not get a response to your
  80. early childhood education

    which one of these factors is most likely to determine the total number of children you can take into your facility (a)physical space available (b)childreds need (c)staff members skills (d)program philosophy
  81. Exploring Space

    if u could travel at the speed of ligt without fuel, where would the energy required for the engine come from? is this possible? Would gravity control be helpful? Antimatter? Warp-Drive? I need help answering this question:-(
  82. Physics

    If a cylindrical space station 300m in diameter is to spin about its central axis, at how many revolutions per minute rpm must it turn so that the outermost points have an acceleration equal to g?
  83. Living a Healthy Life

    The National Association for the Education of Young Children recommends a minimum of _______ square feet of usable floor space per child. A. 50 B. 10 C. 35 D. 45 C.
  84. Physics

    Suppose the surface (radius = r) of a cylindrical space station is rotating at 29.1 m/s to provide artificial gravity. What must be the value of r for the astronauts to weigh 1/3 of their earth weight? Don't know how to start please help.
  85. Art

    Sketchbook 7 by Vivian W. Which element did this artist use most to emphasize her original creation of a cotton candy creature? A. negative space B. color C. line D. texture Is the answer C?
  86. algebra

    I don't quiet know where to start can anyone help guide me? Bonnie has a container in the shape of rectangular pyramid. The formula for the surface area of the enclosed space is S=lw+0.5Ph. Solve for P? P= S - lw- 0.5h P= S + lw + 0.5h P= S-lw/ 0.5h P=
  87. concept development

    Free play, eating a snack, painting, hearing a story, and so forth are related to which of the following learning concepts? A. Space B. Classification C. Size D. Time my answer is d.
  88. physics

    two charge 5NC and -2NC are placed at a point (5cm,0,0)and (23cm,0,0)in a region of a space where there is no other electric field.calculate the electrostatic potential energy of this charged system
  89. Physics!

    Consider someone in a rotating space habitat. The outward force felt by the person A.has no reaction counterpart B.is an interaction with Earth C.is a form of gravity D.is real in the traditional sense
  90. science

    i need help what do astronauts eat, drink when in space???? sanitation??? health???? exercise??? sleep?????how do they do all of this http://www.pbs.org/spacestation/station/living_sanitation.htm
  91. Physics

    If a cylindrical space station 300 {\rm m} in diameter is to spin about its central axis, at how many revolutions per minute ({\rm rpm}) must it turn so that the outermost points have an acceleration equal to g?
  92. Chemistry- Dr.Bob222

    Predict the effect of decreasing the temperature on the position of the following equilibria. (a) H2(g) + Cl2(g) ↔ 2HCl(g) + 49.7 kJ My answer: shifts to the right (b) 2NH3(g) ↔ N2(g) + 3H2(g) ∆ H = 37.2 kJ My answer: shifts to the left
  93. calc 2

    The height (in feet) attained by a rocket t seconds into flight is giving by the function h(t)= -1/3t^3 + 16t^2 + 33t + 10 When is the rocket rising? When is the rocket decreasing? when does it reach its maximum height above the ground? what is the maximum
  94. calculus

    The height (in feet) attained by a rocket t seconds into flight is giving by the function h(t)= -1/3t^3 + 16t^2 + 33t + 10 When is the rocket rising? When is the rocket decreasing? when does it reach its maximum height above the ground? what is the maximum
  95. accounting

    2. Final Project: Business Plan Resources: Appendix A Due Date: Sunday Day 7 [Individual] forum Write a 700- to 1,050-word paper, using APA guidelines, based on the scenario below. You want to start your own business. You found an investment group that is
  96. math

    Find the least squares approximation of x over the interval [0,1] by a polynomial of the form a + b*e^x --------------------------------------------------------- The polynomial produces an output space with two linearly independent basis vectors: u1 = 1,
  97. 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
  98. 4 CALCULUS study problem

    1. How fast does the radius of a spherical soap bubble change when you blow air into it at the rate of 15 cubic centimeters per second? Our known rate is dV/dt, the change in volume with respect to time, which is 15 cubic centimeters per second. The rate
  99. English

    Revise the following paragraph, improving it without changing its overall meaning. Pay particular attention to sentence structure. Ever been assigned to work on a group project for class! Many students dread group projects: because one student typically
  100. Composition

    Revise the following paragraph, improving it without changing its overall meaning. Pay particular attention to sentence structure. Ever been assigned to work on a group project for class! Many students dread group projects: because one student typically