Popular questions and responses by Jeremy
  1. physics

    The brick shown in drawing the is glued to the floor. A 3500-N force is applied to the top surface of the brick as shown. If the brick has a shear modulus of 5.4 109 N/m2, how far to the right does the top face move relative to the stationary bottom face?

    asked on November 13, 2011
  2. Geometry

    Martin wants to use coordinate geometry to prove that the opposite sides of a rectangle are congruent. He places parallelogram ABCD in the coordinate plane so that A is (0, 0), B is (a, 0), C is (a, b), and D is (0, b). What formula can he use to determine

    asked on May 19, 2014
  3. math

    Ivanna is going to rent a truck for one day. There are two companies she can choose from, and they have the following prices. Company A charges 114 and allows unlimited mileage. Company B has an initial fee of 65 and charges an additional 0.70 for every

    asked on August 2, 2014
  4. Algebra

    On Monday, it took Helen 3 hours to do a page of science homework exercises. The next day she did the same number of exercises in 2 hours. If her average rate on Monday was p exercises per hour, what was her average rate the next day, in terms of p? I know

    asked on March 8, 2014
  5. Chemistry

    Rank the following ionic compounds by lattice energy. Highest to Lowest LiCl MgO Na2O Beo Na2S

    asked on March 30, 2012
  6. History

    Arrange the events in correct chronological order. Place the earliest event at the top and the latest event at the bottom. Hamas take control of Gaza. Israel withdraws from Gaza. Israel and the PLO sign the Oslo Accords. Israel takes control of West Bank

    asked on December 10, 2018
  7. Statistics

    A golf ball is dropped from 15 different heights (in inches) and the height of the bounce is recorded (in inches.) The regression analysis gives the model y-hat = -0.4 + 0.70 (drop height) where y-hat is the predicted bounce height of the golf ball. A golf

    asked on September 18, 2013
  8. Chemistry

    The nuclide 96Nb decays by a first-order process with a rate constant of 2.96 × 10-2 h-1. How long will it take for 85% of the initial amount of 96Nb to be consumed? I believe it is 5.07 hrs...

    asked on January 21, 2013
  9. Chemistry

    At ordinary body temperature (37 C) the solubility of N2 in water in contact with air at ordinary atmospheric pressure (1.0 atm) is 0.015 g/l. Air is approximately 78 mol % N2. a)Calculate the number of moles of N_2 dissolved per liter of blood, which is

    asked on February 6, 2012
  10. Chemistry

    The reaction 2NO2--->2NO+O2 has the rate constant k= 0.68 m-1s-1. If the initial concentration of NO2 is 9.30×10−2 M, how long it would take for the concentration to decrease to 2.00×10−2 M ? please answer and show the steps

    asked on February 9, 2012
  11. Chemistry

    How many grams of sulfur (S8) must be dissolved in 100.0 naphthalene (C10H8) to make a 0.13 solution? answer in grams.

    asked on February 3, 2012
  12. chemistry

    A compound is found to contain 15.12 % phosphorus, 6.841 % nitrogen, and 78.03 % bromine by weight. what is the emperical formula

    asked on June 28, 2015
  13. Physics

    A ray of light hits a side of Lucite ( n = 1.5) prism at 50 degree. Assuming that the nearest vertex has an angle of 70 degrees, what is the angle of light that leaves the prism.

    asked on April 25, 2011
  14. Math

    Find the quotient 3(cos (5pi/12) + i sin (5pi/12) / 6(cos (pi/12) i sin (pi/12)). Express the quotient in rectangular form. I have no idea what I did but I got (1/4) - 433i/1000.

    asked on August 17, 2009
  15. physics 11

    Timmy twirls a dead rat (mass = 2 kg) attached to a rusty chain (length = 1m) in a vertical circle. With what velocity should Timmy rotate the rodent so that the chain just goes slack (no force in the chain) at the top? pls answer :(

    asked on April 16, 2016
  16. Physics

    A fire hose 10 cm in diameter delivers water at the rate of 23 kg/s. The hose terminates in a nozzle 3.1 cm in diameter. (a) What is the flow speed in the hose? (b) What is the flow speed in the nozzle?

    asked on November 30, 2012
  17. History

    What is the role of religion in Iran’s government? A. Iran’s government is elected in free and fair elections, and religious leaders rarely win. B. Iran’s government is led by a secular president who has more power than the religious Supreme Leader.

    asked on December 7, 2018
  18. Math

    An orienteer runs for 4.5km, then turns through and angle of 32 degrees and runs for another 6km.How far is she from her starting point?

    asked on April 22, 2015
  19. physics

    What, roughly, is the percent uncertainty in the volume of a spherical beach ball whose radius is r = 0.84 ± 0.04m ?

    asked on September 2, 2014
  20. physics

    An electron is accelerated horizontally from rest in a television picture tube by a potential difference of 5400V . It then passes between two horizontal plates 6.1cm long and 1.2cm apart that have a potential difference of 250V At what angle will the

    asked on March 23, 2010
  21. Physics

    Two large parallel plates are separated by a small gap of distance 2 mm. See figure below. A fluid with dynamic viscosity µ = 10-3 Pa.s fills the gap between the plates. The surface area of each side of the plates is 2 m2. The top plate has a velocity 2.0

    asked on January 27, 2016
  22. Finance

    Capital Budgeting Problems I. Indigo Industrial, Inc. is trying to determine which, if any, of five different projects it should undertake. Indigo Industrial has a 8.25% required rate of return on projects that it undertakes. The projected cash flows for

    asked on April 19, 2014
  23. chemistry

    What is the pH of pure water in equilibrium with 1 atmosphere of carbon dioxide at 25˚C? (Hint, what does 1 atmosphere of CO2 mean?)

    asked on March 6, 2013
  24. Science.

    Sara has lived 18.0 years. How many seconds has she lived? Express the answer in scientific notation. Use 365.24 days per year for your calculations.

    asked on August 21, 2012
  25. Physics

    What is the centripetal acceleration of the Moon? The period of the Moon's orbit about the Earth is 27.3 days, measured with respect to the fixed stars. The radius of the Moon's orbit is RM = 3.85 · 108 m.

    asked on June 14, 2012
  26. Chemistry

    A dilute aqueous solution of an organic compound soluble in water is formed by dissolving 2.35 g of the compound in water to form 0.250 L solution. The resulting solution has an osmotic pressure of 0.605 atm at 25 Celsius. Assuming that the organic

    asked on February 6, 2012
  27. Chemistry

    By using the Clausius-Clapeyron equation,lnP=Hvap/RT +C , derive the relationship between the vapor pressures,P1 and P2, and the absolute temperatures at which they were measured,T1 and T2 .

    asked on January 25, 2012
  28. Math

    A picture measures 20 cm x 25 cm. The width of the matting and frame at the top and bottom is 5cm. What should be the dimensions of the frame so that the framed picture is similar to the picture alone

    asked on March 5, 2011
  29. social studies

    Does anybody know a city or town that starts with x? world-gazetteer . com My student atlas shows several towns beginning with X -- including: Xankandt, Azerbaijan Xenia, Ohio, U.S. Xiaguan, China Xichang, China

    asked on June 15, 2005
  30. History

    How are the governments of Jordan and Kuwait different from the governments of the United Arab Emirates and Oman? A. Citizens of Jordan and Kuwait can vote. B. Jordan and Kuwait have monarchs. C. The king of Jordan and emir of Kuwait have more power. D.

    asked on December 10, 2018
  31. History

    Drag and drop to classify each country to its type of government. Jordan Qatar Oman United Arab Emirates Kuwait constitutional monarchies= absolute monarchies= Which country matches to which type of government?

    asked on December 7, 2018
  32. Math

    Complete each of the tasks outlined below. Task 1 You are starting a new business in which you have decided to sell two products instead of just one. Determine a business you could start and choose two products that you could sell. How much of your own

    asked on April 12, 2018
  33. college chemistry

    calculate the equilibrium constant for the following reaction at 298k given that DeltaGrxn=2.8kj/mol N2O4-2NO2 I thought to get K you use the expression K=e^(-deltaG/(RT)) but I cant get the same answer my professor put down which is 3.1

    asked on April 6, 2016
  34. calculus

    A wooden artifact recovered from a tomb contains 29% of the carbon-14 that is present in living trees. The half life of carbon-14 is 5730 years. How long ago was the artifact made?

    asked on December 18, 2015
  35. geometry

    What is scale factor for the dilation of segment AB into segment CD? Draw the dilation of segment AB with scale factor 2/3 and label it segment EF. The figure is 2 || segments with point A(3, -3) with B(6,3). Other segment is C(4,-4) with D(8,4). Cant seem

    asked on April 17, 2015
  36. geometry

    do you compare the graphs of y=1/x with y=-10/x; y=1/x with y=1/x+3 + 3?

    asked on April 10, 2015
  37. Chemistry

    There's reaction involving gas: Fe + H2SO4 -> Fe2(SO4)3 + H2O + SO2 How Fe2(SO4)3 is occur? I know the "2" comes from the ion of SO4, but I don't know where the "3" comes up. Is the Fe2(SO4)3 comes up from half-reaction method? Is the reaction occurs in

    asked on March 19, 2015
  38. health

    Pulmonary ventilation is also referred to as ________.

    asked on January 8, 2015
  39. chemistry

    Calculate the number of GRAMS of carbon dioxide (CO2) produced when 100 grams of methane (CH4) are completely burned in oxygen (O2).

    asked on October 29, 2014
  40. physics

    At a distance of 1 cm from the source, the flux from the isotropic source is one hundred times brighter. Which source is brighter fifty centimeters away? At what distance from the source are the two equally bright? Could you explain the theory behind the

    asked on October 17, 2014
  41. Chemistry

    calculate the concentration of the silver ion remaining in the solution when 10g of solid AgNO3 is added to 50 ml of 1x10-2 M NaCl solution.

    asked on May 18, 2014
  42. Math

    Indigo Industrial, Inc. is trying to determine which, if any, of five different projects it should undertake. Indigo Industrial has a 8.25% required rate of return on projects that it undertakes. The projected cash flows for each of the projects are given

    asked on April 19, 2014
  43. physics

    A cylinder is fitted with a piston that is connected to the bottom by a spring. The spring has a spring constant of k = 3600 N/m. The cylinder is open to air at the top and is frictionless. The radius of the cylinder is 25 mm and the piston has negligible

    asked on November 21, 2013
  44. math

    A rectangular plot of land is to be seeded with grass if the plot is 22m X 28m and a 1kg bag of seed is needed for 85m^ of land how many bags of seeds are needed?

    asked on October 8, 2013
  45. math 6

    write an expression in terms of x for the perimeter of an isosceles triangle with 2 sides of 6 cm and a third side of 2x cm.

    asked on March 6, 2013
  46. Chemistry

    For the oxidation of glucose ( C6H12O6 + 2O2---6H2O +6CO2), how many moles of O2 will it take to consume 6 moles of glucose. Can someone explain it?

    asked on January 27, 2013
  47. Calculus

    use implicit differentiation to find dy/dx if x^3+y^3=6xy

    asked on November 13, 2012
  48. Science.

    An atom of uranium-235 has a mass 235.043924 amu (atomic mass units). Using scientific notation, state the mass in amu of ten million such atoms.

    asked on August 21, 2012
  49. Algebra

    Help please (x^3 + 3x^2 - 2x+7)/(x+1)=11 I don't how how to solve this at all-the answer should be 11 but I don't have a clue how to get it-please show me this one so I can hopefully do my homeowrk-we did this in class today but I don't understand it

    asked on March 7, 2012
  50. Chemistry

    Which is more soluble in water: propionic acid or sodium propionate?

    asked on January 30, 2012
  51. Physics

    When a quarter, a nickel, a penny, and a dime are flipped; what are each of their revolutions per minute?

    asked on November 7, 2011
  52. physics

    A fighter pilot dives his plane toward the ground at 485 m/s. He pulls out of the dive on a vertical circle. What is the minimum radius of the circle, so that the normal force exerted on the pilot by his seat never exceeds three times his weight?

    asked on October 25, 2011
  53. math/algebra

    solve x^2 + x - 12 = 0 quadratic formula??

    asked on September 3, 2011
  54. Physics

    a 975 N object is pulled at a constant velocity up an incline with a force of 327 n parallel to the incline as shown in the diagram. Assume that the difference between the work output and the work input is the work required to overcome friction. a) what is

    asked on April 12, 2011
  55. Spanish

    What is this asking? ¿Cómo eres? choices would be: This question asks about about a person's health about what a person is like how a person is feeling today what a person is wearing I think it is about a person's health or how a person is feeling today?

    asked on December 21, 2010
  56. physics

    Calculate the period of a ball tied to a string of length 0.3 m making 1.9 revolutions every second.

    asked on December 11, 2010
  57. Chemistry

    What is the maximum [Ba^2+] that can be maintained in 1.100 L of a 030 M solution of Na2SO4?

    asked on November 30, 2010
  58. Pre Cal.

    1. Identify the conic section represented by: 9y^2+4x^2 - 108y+24x= -144? Is it ellipse. 2. Find the coordinates of the vertex and the equation of the axis of symmetry for the parabola represented by: x^2 + 4x - 6y + 10 = 0. vertex: (-2 , 1) axis of

    asked on August 17, 2009
  59. Pre Cal.

    Find three geometric means betwee -sqrt(2) and -4sqrt(2). A: 2, -2sqrt(2), 4 Is 6 sqrt(2)+ 6 + 3sqrt(2)+... a convergent series? A: Yes. Is 1 + 3(1/2) + 9(1/2)^2 + 27(1/2)^3 +... a divergent series? A: Yes. Are these right?

    asked on August 13, 2009
  60. physical science

    what are the general properties of an acid an a base

    asked on November 5, 2008
  61. algebra

    The number of students attending the fall play was 150 more than the number of adults attending. Students tickets cost $3, and adult tickets cost 45 . A total of $4730 was collected. How many students attended the play? this is what i have, but i need help

    asked on October 13, 2008
  62. science

    What kind of streams form v-shaped valleys? Streams that are first forming,streams that move slowly, streams that have meanders?

    asked on December 6, 2007
  63. Math

    Jason, Simon and Linda have 238 stickers altogether. Jason has 25 fewer stickers than Simon. Simon has 46 more stickers than Linda. How many stickers does Simon have ? *

    asked on March 25, 2020
  64. Calculus

    A shop is open 9 AM - 7 PM. The function r(t), graphed above, gives the rate at which customers arrive (in people/hour) at time t, where t measures time in hours since 9 AM. Suppose that the salespeople can serve customers at a rate of 85 people per hour.

    asked on November 15, 2019
  65. Physics

    What are the difference between scalars and vectors?

    asked on September 2, 2019
  66. math

    What is a spoken sequence? I was in math class and one of the examples was: 29787, 13, 2, 1, 1, 1, ... What does this mean? I learned that I never have to find the general term, but how do I find the next?

    asked on May 16, 2019
  67. Math

    Tony spent $60.54 and bought 3 packs of notebooks and a calculator. How much does a pack of notrbooks cost if a calculator costs $45.87

    asked on January 9, 2019
  68. History

    Why did the Palestinians’ relationship with Israel worsen when Hamas won the most seats in the 2006 Palestinian parliamentary election? A Hamas wanted to eliminate Israel as a country. B Hamas wanted Israel to invade Lebanon. C Hamas wanted to build

    asked on December 21, 2018
  69. History

    Select the boxes in the table to show which country the statement applies. Iraq Turkey Syria a.A U.S. led invastion resulted in Saddam Hussein losing power. b.Civil War has challenged Basha al-Asad's regime. c.The election of Tayyip Erdogan has threatnened

    asked on December 7, 2018
  70. Math

    Order the numbers from least to greatest. 1/3, 1 and 1/4, 0.27, 1.35

    asked on November 29, 2018
  71. Social Studies

    The Indo-Aryans first lived as herders and later survived as ______. We know this information because of the ______. 2 part question!! Answer 1 A. hunter gatherers B. farmers C. artisans Answer 2 A. Eros B. shivas C. brahmas D. Vedas

    asked on November 23, 2018
  72. Art

    1. Which of the following best describes how rhythm and movement were created in this image? 1. Having repetitive geometric shapes only across the image creates a feeling of movement. 2.Using contrasting colors throughout the image creates a feeling of

    asked on November 8, 2018
  73. Social Studies

    Who was Siddhartha Gautama before he became the Buddha?

    asked on November 7, 2018
  74. Programming

    Must be in C#: I will not be submitting this work as my own work. I just want help with the problem. For today's lab you will be creating a basic inventory system. The inventory system will be for a DVD store. You will have to make a DVD class that has

    asked on June 16, 2018
  75. calculus

    1. Let C(t) be the number of cougars on an island at time t years (where t > 0). The number of cougars is increasing at a rate directly proportional to 3500 - C(t). Also, C(0) = 1000, and C(5) = 2000. 1. Calculate C(10). 2. Find the limit as t tends to

    asked on April 25, 2018
  76. math


    asked on February 27, 2018
  77. physics

    In an outdoor game a small bag of rice is thrown from near the ground with a velocity of 3.50 m/s at an angle of 30.00 above the horizontal. Find out how long the bag will be in the air before it lands at the same height from which it was thrown and how

    asked on February 22, 2018
  78. Math Trigonometry

    Hi guys, I was wondering if you guys can help me with this question. I'm not sure how to do this question. As I keep on getting something that's out of the unit circle. Please help! 17sec2(θ)-13tan(θ)sec(θ)-15=0

    asked on May 29, 2017
  79. Math

    Anna is making fruit punch and iced tea to serve during the day. She starts brewing the tea for the iced tea. The recipe for iced tea requires 3 tea bags for every 5 cups of water. Write an equation that can be used to determine the amount of water, c, in

    asked on May 28, 2017
  80. math

    an 8 ft. piece of board must be cut from a 10 ft. two-by-four. allowing 0.125 ft. for the saw blade, how many inches long is the remaining piece?

    asked on January 25, 2017
  81. Math check - Statistics

    Can someone (preferably one of the long-term tutors) check my answers: Researchers trap 23 devils, and find that 18 of them are infected. Provide an estimate of disease prevalence. p-hat = (18/23)=0.783 Part II: assuming the same disease prevalence from

    asked on December 11, 2016
  82. Math

    Latasha can read 15 pages in 25 minutes. At this rate, how long will it take her to read a 1045 page novel?

    asked on November 6, 2016
  83. finance

    Concluding financial markets are important in a person's daily life and are easier to handle, on how technology is today. Could you help rephrase this please

    asked on September 7, 2016
  84. Math

    A laboratory technician has a 20% and a 40% acid solutions. What amount of each solutions should be used in order to make 300ml of 28% acid solution?

    asked on July 27, 2016
  85. Math

    Casies invested one part of her $10,000 at 7.5% interest per year and the other part at 8.5% per year as well. Her income from the two investments was $820. How much did she invest at each rate of interest?

    asked on July 27, 2016
  86. math

    How many cubic feet are there in a room 20' long × 12' wide, with a ceiling 8' high

    asked on April 8, 2016
  87. Brief Calculus

    Increasing and Decreasing Functions. Let f(x) = 4x^3 - 9x^2 -30x +6 A. Find all critical numbers of f(x) B. Give the open intervals where f (x) is increasing and decreasing and clearly label each.

    asked on April 1, 2016
  88. Math

    So Prize money of $500 is divided between Alan & Jim so that Alan receives $170 more than Jim How much does each receive ----- Using one variable:: Let Jim have "x" Then Alan has "x+170" ---- Equation: x + x+170 = 500 2x = 330 x = $165 (Jim's share) x+170

    asked on March 28, 2016
  89. Math

    I want to include a new 20m x 58m swimming pool in the athletic center. I am submitting a scale drawing on an 8.5" x 11" sheet of paper. Which scale should I use to create as large a drawing as possible on the paper? 1/8"= 1m 5/16"= 1m 3/16"= 1m 1/4"= 1m

    asked on January 6, 2016
  90. biology

    A researcher wanted to know how many fish were in a dam.He caught 20 fish and marked them by clipping out a small section of their tail fins.He then released them back into dam.A few days later he caught 25 fish and found that 8 had been marked 1.estimate

    asked on October 16, 2015
  91. math

    Min wants to create a figure using half as many tiles as an original figure that uses 25 tiles (15 gray and 10 white.) How many gray tiles will she use? I figured half of 25 is 12 and a half and half of 15 is 7 and a half. So I think she would use 7 and a

    asked on October 14, 2015
  92. chemistry

    14g of lithium hydroxide dissolves in 500cm^3 of titration ,30cm^3 is used to neutralise sulphuric acid of 0,^-3 how do i calculate (a)concentation of a base

    asked on May 28, 2015
  93. geometry

    I have triangle ABC. Bottom is AC with midpoint F. There is a point under F called P with a little backward Z connecting F & P. A segment goes from D (midpoint of AB)to P and from E (midpoint of BC) to P. I got AD=3; BC=8 I have AF=7. I don't know how to

    asked on April 16, 2015
  94. Math

    Determine how many triangles can be drawn. Calculate, then label, all side lengths to the nearest tenth and all interior angles to the nearest degree. a= 2.1 cm, c= 6.1 cm,

    asked on March 29, 2015
  95. pre-cal

    One campus of Houston community college has plans to construct a rectangular parking lot on land bordered on one side by a highway. there are 640 feet of fencing available to fence the sides. let x represent the length of each off the two parallel sides of

    asked on February 23, 2015
  96. Chemistry

    An unknown metal with a mass of 260 g has a heat capacity of 100 J/oC. What is the specific heat of the metal? I am stuck finding the right equation, knowing that the mass is 260 g and heat is 100 J per Celsius. Thus, going with the equation, q=msT, the

    asked on November 22, 2014
  97. math

    Let X be a Binomial random variable with parameters n and 0 < p < 1. Show that lim E(1 + X) · E(1/1 + X)= 1. n→∞

    asked on November 15, 2014
  98. statistics

    Let X be a Binomial random variable with parameters n and 0 < p < 1. Show that lim E(1 + X) · E(1/1 + X)= 1. n→∞

    asked on November 15, 2014
  99. statistics

    Let X be a Binomial random variable with parameters n and 0 < p < 1. Show that lim E(1+X)·E(1+X)·E(1/1+X)=1. n→∞

    asked on November 15, 2014
  100. Physics

    A mass of 9.8 kg is moving in the positive x direction at 16.6 m/s and collides in a perfectly elastic, head on collision with a mass of 12.7 kg at rest. The same mass of 9.8 kg in the positive direction at 16.6 m/s also collides with the mass of 12.7 kg

    asked on November 11, 2014


  1. 1
  2. 2
  3. 3