1. PHYSICS

    A space explorer is 4.6 billion km away from a certain star, and observes that the gravitational force of attraction exerted on the spacecraft by the star is 500 N. What will the force become when the craft has approached to a position 2 billion km from
  2. Physics

    A 500-kg disk-shaped nonrotating satellite gets hit by a 5-g piece of space debris moving at 1 km/s. If the debris buries itself near the satellite’s rim, how rapidly will the satellite rotate after the hit?
  3. science

    For a machine with an efficiency of 80%, what is the work output of the machine if its work input is 2,000 joules? would i divide 2000/.80? which gives me 2500? Also, If a machine requires an effort force of 750 newtons applied over a distance of 2 meters,
  4. maths

    95. Suppose that 387 people will travel on a space shuttle with room for 420 people.Each compartment seats 14 people before the next compartment opens.How many people will ride in the last compartment that opened?
  5. Math

    a rectangular box is 2 cm high, 4cm wide and 6 cm deep. Michelle packs the box with cubes, each 2 cm by 2cm by 2cm, with no space left over. How many cubes does she fit in the box?
  6. Geometry

    A box is filled with 6 cans of tennis balls. If the emply space was filled with sand, how much sand is needed to fill the box? Each can has a radius of 2 in. Height of box is 12in.
  7. Math

    Each square represents 625 square feet, each line segment represents 25 feet. A galapagos tortoise must use 550 feet of fencing to enclose a space of 15,000.
  8. space

    Imagine that all gravity in the Universe was magically turned off (except the gravity of the Earth),and everything stopped moving.Earth's gravity will now begin to pull everything in the Universe slowly toward it. True or False?
  9. DISCRETE MATH

    HOW CAN YOU USE DISCRETE PROBABILITY TO CALCULATE THE PROBABILITY OF TESTING 5 DEVICES SUCH THAT ALL 5 END UP BEING NONDEFECTIVE, GIVEN THERE ARE 20 DEFECTIVE DEVICES TOTAL OF THE ORIGINAL 100 DEVICES? WHAT IS THE SAMPLE SPACE?
  10. Calculus

    An air traffic controller spots 2 planes at the same altitude converging on a point as they fly at right angles to each other. One plane is 150 miles from the point moving at 450 miles per hour. The other plane is 200 miles from the point moving at 600
  11. Physics

    An elevator operates on a very slow hydraulic jack. Oil is pumped into a cylinder that contains the piston. The piston lifts the elevator as the internal cylinder pressure (P2) rises in comparison to the outside pressure (P1=101,325 Pa or about 14.7 psi).
  12. Physics

    An elevator operates on a very slow hydraulic jack. Oil is pumped into a cylinder that contains the piston. The piston lifts the elevator as the internal cylinder pressure (P2) rises in comparison to the outside pressure (P1=101,325 Pa or about 14.7 psi).
  13. physics

    Imagine a spring floating in space. This spring has a very small length when it is unstretched. The spring constant for this spring is 4.2 N/m. Now place 2.6 μC charges on each end of the spring, and allow it to stretch until it reaches a new
  14. Physics

    There are two particles (1 and 2) that are moving around in space. The force that particle 2 exerts on 1 is given by: F21(t)=Fx*e^−(t/T)i^ + Fy*sin(2πt/T) j^ Where the parameters have the values: Fx = 13.4 N Fy = -84.2 N T = 74 s tf = 140.46 s
  15. math

    you are mailing a birthday present to a friend.you have abox that has a length of 2 1/2 feet,aheight of 2 feet,and a width of 1 1/2 feet.the present has a volume of 3 cubic fet.what is the volume of th empty space in the box?
  16. biology

    Data Table: Rate of Photosynthesis Trial # Number of Bubbles/Minute 1 2 3 4 5 6 7 8 9 10 Trial 1 1 4 6 9 10 12 13 15 18 20 Trial 2 3 7 11 14 16 20 25 28 32 35 Making a Graph 2. In the space below, make a line graph showing the data from both trials
  17. Physics

    An electron enters a region of space where the potential difference between two equipotential surfaces are 12 cm apart. One surface has a potential of 120 volts and the other potential of 75 volts. What is the magnitude and direction of the electric field
  18. Algebra

    Bronze is an alloy that is made of zinc, tin, and copper in a specified proportion. Suppose an order is placed for 1000 pounds of bronze. The amount of tin in this order of bronze is two times the amount of zinc, and the amount of copper is 10 pounds more
  19. Physics Number 3 (Online w/ no teacher)

    Many people mistakenly believe that the astronauts that orbit the Earth are “above gravity.” Calculate g for space-shuttle territory, 200 kilometers above the Earth’s surface. Earths’ mass is 6 X 10 to the 24th and its radius is 6.38 X 10 to the
  20. physic

    Two cubes with sides of length 121.0 mm fit in a space that is 243.3 mm wide, as shown in the figure. One cube is made of aluminum, and the other is made of brass. What temperature increase is required for the cubes to completely fill the gap? Give answer
  21. adv comp

    how can i put this sentence where I am not talking to the reader, just describing the surroundings. As one starts to stride to the right,they come upon a small stream and can’t get past the reeking smell of unknown origins. my whole paper is suppose to
  22. chemistry

    Some properties of the two compounds are listed below: Melting point- Compound X= -114*C Compound Y= -138*C Boiling Point- Compound X= 78*C Compound Y= -22*C Net Dipole?- Compound X= Yes Compound Y= Yes Functional group: Compound X Alcohol Compound Y=
  23. chemistry - structure and properties (help)

    I have a revision question which i do not understand please help me out: 45. Explain the following observations: motor oil pours from a can more slowly than water; however, in a jar, the meniscus of motor oil is flatter than the meniscus of water. The
  24. Math

    On a salmon farm, pool A contains 310 salmon and a second pool B contains 90 salmon. The number of salmon in pool A is decreasing by 15 salmon per month. The number of salmon in pool B is increasing by 15 salmon per month. After how many months will there
  25. Biology

    The function of a protein is determined by its ? Answer: shape The shape of a protein is determined by the ? of its ? ? First answer : ? Second two answers : primary structure
  26. physics

    An astronaut whose mass is 80. kg carries an empty oxygen tank with a mass of 10. kg. The astronaut throws the tank away with a speed of 2.0 m/s. With what velocity does the astronaut start to move off into space?
  27. computer science

    c++ program question write a program that uses a loop to display the characters for each ascii code 32 through 127. display 16 characters on each line with one space between characters in c++
  28. Help????????????????????/

    Assume a family is planning to have three children. A. What is is the probablity of a family having 2 girls. B. The probablity of a family having at least 1 boy. C. List the sample space using a B for Boy and G for girl (Hint there should be 8 possible
  29. Intro to Computer Engineering

    When solving 5x^2-50x+125=0, a space alien got x=8 for one of the two roots. What possible base could the alien be using? (Note: the coefficients are also in this base. That is 5,50,125 are all in this mystery base as well)
  30. physics

    a space probe launched from earth and orbits at a distance of 15,000 m from earth's center, the gravitational force is 500 N. What is the size of force when it is 25,000 m from earth.
  31. trig

    A space shuttle 200 miles above the earth is orbiting the. Earth once every 6 hours. how far does the shuttle travel in one hour? Note the radius of earth about 4000 miles.
  32. math-stupid stat

    A manufacturing firm is planning the initial public offering of its stock in order to raise sufficient capital to finance a new plant. With current earnings of $1.61 a share, the firm and its underwriters are contemplating an offering price of $21, or
  33. qnt/561

    Help bad golf balls shall not be greater than 1.620 ounces (45.93) the diameter of the ball shall be less than 1.680 inches the velocity f the ball shall not be greater than 250 feet per second. they check these often using random sampling, the dozen of
  34. English

    Could you check the following statements, please? My doubts concern the words before the parentheses.I really hope you can help me!! 1) Elizabeth believes her closest friend Charlotte has demeaned herself in (?) marrying Mr Collins. Though she is
  35. Properties of the ceramic ball mill

    The structure of Ceramic Ball Mill: Ceramic Ball Mill is mainly composed of a driving device, a cylinder body device, feeding device, discharging device and an electrical control device.Ceramic Ball Mill load is large, the power consumption is large, so
  36. Algebra

    Decreasing cube. Each of the three dimensions of a cube with sides of length s centimeters is decreased by a whole number of centimeters. The new volume in cubic centimeters is given by V(s) equals s power of 3 - 13s power of 2 + 54s - 72. a) Find
  37. Microeconomics

    As a general rule, profit-maximiaing producers in a competitive maket produce ouput at a point where: A) marginal cost is increasing B) marginal cost is decreasing C) marginal revenue is increasing D) price is less than marginal revenue I was picking C for
  38. accounting

    Normal price of mini-scooters are $120 per scooters, ABC estimates 400,000 scooters to be sold for Year 2013. Material costs are $20,0000 per year to produce these scooters. Variable costs are $10.00/per mile delivery and $50.00/scooter for handling
  39. accounting

    Normal price of mini-scooters are $120 per scooters, ABC estimates 400,000 scooters to be sold for Year 2013. Material costs are $20,0000 per year to produce these scooters. Variable costs are $10.00/per mile delivery and $50.00/scooter for handling
  40. Calc

    Two commercial airplanes are flying at an altitude of 40,000 ft along straight-line courses that intersect at right angles. Plane A is approaching the intersection point at a speed of 427 knots (nautical miles per hour; a nautical mile is 2000 yd or 6000
  41. Math

    Consider the equation below. (Give your answers correct to two decimal places.) f(x) = 8sin(x) + 8cos(x) 0 ≤ x ≤ 2 (a) Find the intervals on which f is increasing. (Enter the interval that contains smaller numbers first.) ( , ) union ( , ) Find
  42. Calc

    Two commercial airplanes are flying at an altitude of 40,000 ft along straight-line courses that intersect at right angles. Plane A is approaching the intersection point at a speed of 427 knots (nautical miles per hour; a nautical mile is 2000 yd or 6000
  43. physics

    It is the year 2305 and the tallest structure in the world has an insane height of 3.19×106 m above the surface of the Earth. A pendulum clock that keeps perfect time on the surface of the Earth is placed at the top of the tower. How long does the clock
  44. physics

    It is the year 2305 and the tallest structure in the world has an insane height of 3.19×106 m above the surface of the Earth. A pendulum clock that keeps perfect time on the surface of the Earth is placed at the top of the tower. How long does the clock
  45. contemporary buisness communications

    for what audience or readership do you think the article "blogs will change your business" was written? what is the purpose of the article (to entertain, inform, persuade, or a combination)? explain answer how do the writers organize information in the
  46. chem

    Can somebody help me please??? Ozone, O3 has a O-O-O connectivity. 1. Draw a lewis structure for ozone 2. Calculate the formal charge for each oxygen of ozone 3. Describe the shape of ozone
  47. Science urgent help

    A scientist observes that termites are fed a certain antibiotic die a starvation after a few days. The scientist also notices that certain protists that live inside the termites guy are affected by the antibiotic in a peculiar way: although the protists
  48. Physics

    The average speed of an orbiting space shuttle is 19700 mi/h. The shuttle is orbiting about 125 mi above the Earth’s surface. Assume the Earth’s radius is 3963 mi. How long does it take to circle the earth? Answer in units of h.
  49. History

    what was the importance of additional land acquired through westward expansion? It Provided protection from war. It provided more land for Native Americans. It provided space for the growing number of immigrants. It did not provide anything of importance
  50. science

    Earths mass is 6 x 10^24kg and its radius is 6.38 x 10^6m (6380 km ). Use the inverse-square law to show that in space-shuttle territory, 200 km above the earths surface the force of gravity on a shuttle is about 94% of that at the earths surface.
  51. Physics

    A deep space probe moves away from the earth with a speed of 0.75c. An antenna on the probe requires 3.00s probe time to rotate through 1 revolution. How much time is required for 1.00 rev according to an observer on Earth?
  52. Physics

    A 70.0-kg astronaut pushes to the left on a spacecraft with a force   in "gravity-free" space. The spacecraft has a total mass of 1.0 × 104 kg. During the push, the astronaut accelerates to the right with an acceleration of 0.36 m/s2. Determine the
  53. Translate the following situation into an inequali

    “Charlie would like to pack one less outfit than Jane for their trip. Loretta would like to bring five outfits less than twice what Jane packs. Due to space in the suitcase, they are limited to a total of 24 outfits. How many outfits can they each
  54. History

    1.Which of the following decisions best shows the US governments willingness to participate in the global economy? A.relocating domestic jobs to foreign countries B.joining the World Trade Organization C.decreasing spending in international markets
  55. social studies

    the task of economic policy is to create a properous america. The unfinished task of properous Americans is to build a Greta Society. Our accomplishment have been many; these tasks remain unfinished:> to achieve full employment without inflation;> to
  56. social studies

    the task of economic policy is to create a properous america. The unfinished task of properous Americans is to build a Greta Society. Our accomplishment have been many; these tasks remain unfinished:> to achieve full employment without inflation;> to
  57. social studies

    The task of economic policy is to create a prosperous America. The unfinished task of prosperous Americans is to build a Great Society. Our accomplishments have been many; these tasks remain unfinished: > to achieve full employment without inflation;
  58. physics

    While taking a plane flight to a meeting, a physicist decides to do a mental calculation of how much fuel the plane would consume in the absence of friction, assuming its engines have an efficiency of 22.0% and the mass of the plane is 200,000 kg. Each
  59. algebra

    Jimmy bought a car in January of 2010 worth $25, 500. He submitted the car for valuation in January 2015 and was told that its worth is now $20, 450. Assuming that the depreciation is linear. a) Find the rate at which the car is decreasing in value. Treat
  60. Chemistry

    X(g) + 2 Y(g) + 2 Z(g) -->3 M(g) + 2 N(g) I've already found the orders for the following to be: X is 2nd, Y is 1st, Z is 0 and overall of course is 3. But I am confused about the below question. I initially guess that No it doens't occur in one
  61. accounting

    On January 1, 2013, National Insulation Corporation (NIC) leased office space under a capital lease. Lease payments are made annually. Title does not transfer to the lessee and there is no bargain purchase option. Portions of the lessee's lease
  62. Physics

    A parallel-plate capacitor is made from two plates 12.0cm on each side and 4.50mm apart. Half of the space between these plates contains only air, but the other half is filled with Plexiglas of dielectric constant 3.40. An 18.0 V battery is connected
  63. chemistry

    If maleic acid could be represented as H2Ma, write the 2 equations for its reaction with NaOH in the space below (showing the sequential neutralization of each acidic proton): 1) H2Ma + NaOH --> H3O + MaNa (molecular) 2) H2Ma + OH- --> H2O + MaH-
  64. English

    I have to analyze the use of diction and syntax in three authors specific works, but I'm unsure of how to anazlyze/explain these, exactly. I know that diction is the author's word choice and syntax is sentence structure, but I don't know how to pinpoint
  65. Geometry Math

    In designing a circular flower bed where the diameter of the circle is 13 feet​ long, a gardener decides it would look best to space the flowers 7 inches apart. How many flowers will be needed around the outside of the flower​ bed? (I've tried finding
  66. astronomy

    Which of the following two telescopes has a better angular resolution? 1) the Hubble Space Telescope (2.4 meter aperture) at optical wavelengths and 2) the Very Long Baseline Array (VLBA), a radio interferometer with a maximum baseline of 8600 km observing
  67. algebra

    For problems 13 and 14, assign each letter and a blank space to a number as shown by the alphabet table below. Use the code [1,-2_-3,7] encode the phrase "ONE QUESTION TO GO" The matrix C=[1,-2_-3,7] was used to encode a phrase to
  68. physics

    A closed auditorium of volume 27100 m^3 is filled with 2210 people at the beginning of a show, and the air in the space is at a temperature of 292 K and a pressure of 1.013·105 Pa. If there were no ventilation, by how much would the temperature (in K) of
  69. stats

    A box contains 16 white and 16 black marbles. Construct a sample space for the experiment of randomly drawing out, with replacement, three marbles in succession and noting the color each time. (To draw “with replacement” means that each marble is put
  70. physics

    A closed auditorium of volume 27100 m^3 is filled with 2210 people at the beginning of a show, and the air in the space is at a temperature of 292 K and a pressure of 1.013·105 Pa. If there were no ventilation, by how much would the temperature (in K) of
  71. astronomy

    Which of the following two telescopes has a better angular resolution? 1) the Hubble Space Telescope (2.4 meter aperture) at optical wavelengths and 2) the Very Long Baseline Array (VLBA), a radio interferometer with a maximum baseline of 8600 km observing
  72. Math

    An Air Force study indicates that the probability of a disaster such as the January 28, 1986 explosion of the space shuttle Challenger was 1 in 35. The Challenger flight was the 25th mission. a. How many disasters would you expect in the first 25 flights?
  73. astronomy

    Which of the following two telescopes has a better angular resolution? 1) the Hubble Space Telescope (2.4 meter aperture) at optical wavelengths and 2) the Very Long Baseline Array (VLBA), a radio interferometer with a maximum baseline of 8600 km observing
  74. Weather & Climate (science)

    1.A(an)_________________ barometer Has a closed space surrounded by metal 2.A(an)_________________ barometer Has a glass tube that is open at the bottom end. ive been tryin thesse for ever! when awncering put like for example ur goi no awncer #1 put 1.
  75. Chemistry

    Please help! Complete equation by drawing structural formula(e) of the product(s). CH2=CH-CH-OH + CH3-CH-CH2-C =O CH3 CH3 -OH You will have to imagine the bonds as I can't draw vertical or diagonal lines! There are too many possibilities to imagine what
  76. Pre calculus

    ramp needs an angle of elevation no greater than 4.8. the business has 8 ft to build the ramp. the ramp must rise 6 inches above the ground. can a ramp be built in this space? if a ramp can be built what is the minimum horizontal distance possible? please
  77. Fucntion Changes

    I am having some trouble figuring out to find where a graph decreses and increases. These are the directions: Identify the intervals where the functionis changing as requested. 5. On this graph it wants to find where it is increasing. How would I find out
  78. college english papre

    I have paper written in english, not sure its correct or not. My english is kinda bad. grammar and spelling mistakes. If someone can help me out with this one. the paper is not long 2 pages. so i think it a couple minutes work. You can mark the mistakes
  79. Physics

    A. You drag a suitcase of mass 19 kg with a force of F at an angle 41.3 degrees with respect to the horizontal along a surface with kinetic coefficient of friction 0.54. The acceleration due to gravity is 9.8 m/s^2. What is the normal force on the
  80. S.S

    in what way did the structure of the Virginia house of the Burgesses influence the governments of the states and eventually the national government created by the U.S. Constitution? A. It established an elected representative legislature B. It set up a
  81. Business

    Explain why the cost structure associated with many kinds of information goods and services might imply a market supplied by a small number of large firms. (At the same time, some Internet businesses such as grocery home deliveries have continually
  82. Biology -- repost

    (To whoever posted the first time -- DO NOT use any tutor's name where YOUR name should be. Impersonation of a tutor is not allowed on this website.) What are the biological terms of the following? 1.Reproductive structure in breadmould 2.acquired immunity
  83. Genetics

    Researchers at the University of Rochester studies children born with an infection called roseola. The children also have the causative herpesvirus inserted into their chromosomes. At least one percent of each child had the virus in a chromosome of a
  84. English 101

    My question is to correct the faulty parallelism.How can we do that. "The streets were not only too steep but also were too narrow for anything other than pedestrian traffic." The structure is parallel. Perhaps the second were isn't needed. Please check
  85. English - Hyperbole

    what is it used for, and how and why might it appear in literature? its used to make an obvious exaggeration like "to wait an eternity" "Hyperbole is a figure of speech which is an exaggeration. Persons often use expressions such as "I nearly died
  86. Math

    how much space do sleeping quarters take if the sleeping quarters are for 100 guests and average density of the sleeping quarters are 15kg/m2
  87. English

    Writeacher, I really need your help to check some mistakes in the word choice: 1) He lives alone because his wedding is broken. 2) It is impossible to switch off the telescreen fully (better completely) 3)The Thoughtpolice observe people 24 hours a day. 4)
  88. Chemistry

    Draw all the possible condensed structural formulas for the organic compounds with 6 carbon atoms that have a 4-carbon chain. [I don't know how to draw condensed structural formulas with a branch on it or how this type of structure is going to come out]
  89. history

    What was life in Australia like during in 1910-1914? Particular aspects could include: > Transportation > entertainment > Clothing > Agriculture > Food > Family and social structure http://en.wikipedia.org/wiki/History_of_Australia Scroll
  90. math

    Students are hanging their art projects in the school hallway. Each student wants to hang a project that is 7/8 foot wide. The hallway is 16 feet long. If they don't leave any space between each project, how many projects will fit in the hallway
  91. Math

    When an engineer inspects a pipeline she notices a high water mark. How much space is there between the high water level and the top of the pipe, to the nearest hundredth. The diameter of the pipe is 1.2m and the horiztonal distance across the surface of
  92. EAPS

    Consider what happens to a solar beam traveling through the atmosphere on some particular day. Within the atmosphere, 15% of the radiation is absorbed and 20% is scattered or reflected to space mostly by clouds. What percent of the solar radiation incident
  93. math

    Ahmad is choosing a password to access his teacher’s web page. He must choose a capital letter and three nonrepeating digits from 0 through 9. The letter can be in any position in the password. Which shows part of the sample space for Ahmad’s password?
  94. physics

    The average speed of an orbiting space shuttle is 20100 mi/h. The shuttle is orbiting about 196 mi above the Earth’s surface. Assume the Earth’s radius is 3963 mi. How long does it take to circle the Earth? Answer in units of h ( hours)
  95. physics

    Which of the following are not transverse waves? a) Water ripples in a small pool. b) Sound waves traveling through water. c) Radio waves traveling through space. d) Microwaves inside a microwave oven. e) The vibrations on the surface of a drum.
  96. jay kay public

    Consider a planet in space whose mass is twice that of earth and radius is thrice that of earth what will be the weight of a body on this planet if its weight on the earth is 900N ??
  97. Circular motion Problem - Please! need HELP!!!fast

    An asteroid in space is attracted to the planet XYZ such that it accelerates at 0.0085 m/s^2 towards it. Given that planet XYZ has a mass of 4.7*10^24 kg. How far out from the planet is the asteroid?
  98. math

    Jo Lee wants to hang three 3-inch by 5-inch prints on her wall. She wants to line them up vertically with an inch between each print. What is the minimum wall space that Jo Lee must have? Please explain!!!!
  99. Civics

    "__________ should be upheld by all political parties. They would neither advise others to break the law, nor encourage others to do so even when the strongly disagree with the legislation put forward by the government of the day.' Which phrase or term
  100. chemistry

    (c) some properties of the two compounds are listed below: compound X: compound Y: melting point -144C -138C boiling point 78C -22C net point Yes Yes functional group Alcohol Ether (i.) Draw plausible Lewis Structures of compounds X and Y. (ii.) In which