Posts by Josh

Total # Posts: 1,965

  1. physics

    Water flows at 0.830 m/s from a hot water heater, through a 450-kPa pressure regulator. The pressure in the pipe supplying an upstairs bathtub 3.70 m above the heater is 414-kPa. 1. What's the flow speed in this pipe?
  2. Math

    Determine the answer to the following: 9.70 x 108 x 9.6 x 101 = ?? Select one: a. 9.3 e10 b. 9.3 e8.0 c. 0.93 e10 d. 9.3 e8.0
  3. History

    What natural resources have remained significant to Washington economic activity from the time of European colonization to today? 3 choice A. airplanes B. Factories C. Farmland D. Forests E. Genetics F. Railroads G. Research facilities H. Waterways My answers are factories, ...
  4. Math

    Christopher mixes the letters s, e, l, e, c, t, e, and d thoroughly. without looking, allen draws one letter. expressed as a fraction, decimal, and percentage, what is the probability that allen will not select a consonant? A. 3/8 , 0.375, 37.5% B. 3/5 , 0.6, 60% C. 5/8 , 0....
  5. History

    Section 1 political power. all political power is inherent in the people, and governments derive their just powers from the consent of the governed, and are established to protect and maintain individual rights. ... section 33 recall of elective officers every elective public ...
  6. trig

    Find the exact value of costheta if ,sintheta=-2/3 and theta is in standard position with its terminal side in Quadrant IV.
  7. Math

    i have 2 more questions: Stephen has a counter that is orange on one side and brown on the other. The counter is shown below: A circular counter is shown. The top surface of the counter is shaded in a lighter shade of gray and Orange is written across this section. The bottom ...
  8. Math

    thank you so much
  9. Math

    The figure below shows a shaded circular region inside a larger circle: A shaded circle is shown inside another larger circle. The radius of the smaller circle is labeled as r and the radius of the larger circle is labeled as R. On the right side of the image is written r ...
  10. Business Calculus

    Let logb 2=2.217 and logb 3=3.417. Find logb 3b Please walk me through this steo by step.
  11. Physics (Projectile Motion)

    Hi, thanks for the reply. When I do your method, the vi remains in the equations. i.e. t=2vi*sin(40)/9.81 When putting that back in to the equation for the horizontal distance in the x plane horizontal distance = vi*(cos(40)+6)*2vi*sin(4)/9.81 The issue here is that I do not ...
  12. Physics (Projectile Motion)

    Two trucks are parked back to back facing in opposite directions on a straight, horizontal road. The trucks quickly accelerate simultaneously to 3.0m/s in opposite directions and maintain these velocities. When the backs of the trucks are 20m apart, a boy in the back of one ...
  13. Math

    It's okay guys I figured it out. I failed and it gave me the right answers.
  14. Math

    I'm also having trouble with this: A cone has a radius of 40 cm and a volume of 1875 cm cubed what is the volume of a similar cone with a radius of 16 cm? I think it's 113 m squared but I'm not sure.
  15. Math

    Two cones are similar Cone 1 r=5 h=15 Cone 2 r=? h=18 What is the length of the radius of cone 2? is it 7?
  16. math

    Ms Desai has $18 000 to invest and is looking at GICs. • Option A: 5-year GIC at 2.45%, compounded annually. • Option B: 2-year GIC at 2.2%, compounded annually; reinvest funds in a 3-year GIC at 3.5%, compounded annually. Compare the future values of each option. ...
  17. Math

    Real Estate an office building purchased for $1, 200,000 is appreciating because of rising property values in the city. At the end of each year its value is 105% of its value at the end of the previous year. a. Use a recursive formula to determine what the value of the ...
  18. sevier middle

    Mimi works at a store where she earns a base salary of $82 per week plus a commission of 10% of sales. If Mimi sold $80 worth of merchandise last week, what was her total pay?
  19. Math 6th grade

    You use a scale of 1inch = 280 feet to build a model of the Great Pyramid of Giza. The width of the base of the pyramid is 756 feet. What is the width of your model? a. 27 in. b. 3.4 in. c. 3 in. d. 2.7 in.
  20. math

    if the sides are 18 24 and 30 what kind of angle is it
  21. math

    Testing Laboratory Gloves The New York Times ran an article about a study in which Professor Denise Korniewicz and other Johns Hopkins researchers subjected laboratory gloves to stress. Among 240 vinyl gloves, 63% leaked viruses. Among 240 latex gloves, 7% leaked viruses. At ...
  22. stats

    A study was made of 413 children who were hospitalized as a result of motor vehicle crashes. Among 290 children who were not using seat belts, 50 were injured severely. Among children using seat belts, 16 were injured severely (based on data from “Morbidity Among ...
  23. maths\

    Write the ratio 2.5 to 3.15 as a fraction in simplest form
  24. maths

    i think im suposed to put it ina equation is it like this ? n-10+33 ?
  25. maths

    Ten subtracted from a number is greater than thirty-three
  26. stats

    Test the claim given, identify null hypothesis, alternative hypothesis, test statistic, p-value or critical values, conclusion about the null hypothesis and final conclusion Environmental concerns often conflict with modern technology, as is the case with birds that pose a ...
  27. stats

    test the claim, identify null hypothesis, alternative hypothesis, test statistic, p-value and critical values, and conclusion The health of the bear population in Yellowstone national park is monitored by periodic measurements taken from anesthetized bears. A sample of 54 ...
  28. stats

    find critical z values, in each case assume normal distribution applies. left tailed test. Alpha= 0.05 Can someone please explain how to do this?
  29. math

    A medical researcher wants to determine whether male pulse rates vary more or less than female pulse rates. Using the sample pulse rates in Data Set 1 in Appendix B, the male pulse rates can be summarized with the statistics 40=n,69.4=x,11.3=s. For females, the statistics are,...
  30. AP Biology

    If plants are grown for several days in an atmosphere containing 14CO2 in place of 12CO2, one would expect to find: very little radioactivity in the growing leaves large amounts of radioactive water released from the stomates a large increase in 14C in the starch stored in the...
  31. Chem -Bob Pursley Please Help!

    So I would like to check some of my answers. I really appreciate any help 1. Which of the following atoms or ions is diamagnetic; Cr Br Mn2+ B C4+ - I said C4+ 2. Which of the following atoms or ions is paramagnetic? C4- S^4+ V^4+ Se2- Ge4+I said V^4+ 3.Which one of the ...
  32. Biology-ASAP Bob Pursley to the resuce?

    Also...A stock solution of ONPG has a concentration of 25 mM. Add 2.8 mL of buffer, 0.3 mL of enzyme and 0.9 mL of ONPG to a cuvette. What is the final concentration of ONPG in the cuvette? Answer below to one decimal place
  33. Help Bob Pursley

    Do I not need to write Delta EA = 48 kj/mol
  34. Help Bob Pursley

    So i am asked to write the equation representing the third ionization energy for Cr, and what I could come up with is Cr^2+(g)->Cr^3+ + e(not sure if I am right). For the second part I am told that the electron affinity of K is 48 kJ/mol, and i am supposed to write the ...
  35. Chemistry

    So i am asked to write the equation representing the third ionization energy for Cr, and what I could come up with is Cr^2+(g)->Cr^3+ + e(not sure if I am right). For the second part I am told that the electron affinity of K is 48 kJ/mol, and i am supposed to write the ...
  36. math

    After years of teaching, I can say (with 100% made up certainty) that the average number of questions the typical student can complete per minute is 5.  If I choose any student at random (I'm looking at you), what is the probability that yo...er that student ...
  37. math

    I got 12.6% thank you!
  38. math

    During the winter it snows 3 out of every 10 days what is the probability that it will snow, in any given week 7 days, more than 3 times?
  39. Physics

    34
  40. college chemistry

    28.6 grams of SO2 react in the following synthesis: SO2+O2->SO3 How many grams of SO3 could be produced
  41. Language arts

    The word expectations best describes which situation from “Two Kinds”? Waverly’s reputation as a chess champion the mother’s hopes for her daughter to become a prodigy Mr. Chong’s retirement from teaching piano the daughter’s performance at the ...
  42. Chemistry

    Is S^(2-) a conjugate base of a weak acid? I think it is not as a congugate base grabs a H^+ ion. am I right?
  43. Chemistry

    Is S^(2-) a conjugate base of a weak acid? I think it is not as a congugate base grabs a H^+ ion. am I right?
  44. Chemistry

    Thank you!
  45. Chemistry

    Order in the increasing value of their polarity? HF NH3 H2O CO2 here i used the scale and got their numbers. HF>H2O>CO2>NH3 am i correct?
  46. Chemistry

    Actually they are the ones i need a comfirmation.Thank you!
  47. Chemistry

    How do we order them considering their solubility? CH4 , NH3 , Cl2 , CO2 Ammonia make H bonds with water,which makes it the most soluble. CH4 only have Vander Valls forces. I've heard Cl2 disdolves in considerable amounts in water. So how do we order them? Cl2
  48. Chemistry

    I meant C6H5-NH2-3-(CH2C*triple bond*CH)
  49. Chemistry

    Can it reduce the triple bond in, aniline-(CH2C*triple bond*CH) ?
  50. Chemistry

    Does LiAlH4 perform any kind of a reaction with a triple bond?
  51. Chemistry

    So this is not common to all reactions? Today morning we had a Chemistry exam and we were given this question. I can't remember the all but, 1)k 2)k/2 3)R 4)R/2 were there in the answers,where k and R are the reaction constant and the reaction rate of the reaction. So in ...
  52. Chemistry

    Does the reaction rate of a zero order reaction becomes half of its initial value,if the concentration of the reactant becomes half of its initial value?
  53. Chemistry

    Why is meta-nitro phenol more basic than para-nitro phenol?
  54. Math

    1-cotx=1-(cosx/sinx)= 1 - ((1/2)(cot(x/2))) - ((1/2)(sec(x/2))) how to simplify this inside "ln"? can we substract them adding ln(loge) infront of them?
  55. Math

    How do we integrate ln| 1 - cot x | 0-pi/4?
  56. Chemistry

    Thanks!
  57. Chemistry

    Can't we except a white percipitate(ethanoic acid),when ethanoyl chloride is dissolved in water???
  58. Maths

    Thanks Steve!
  59. Maths

    a and b are perpendicular vectors.a=(2i+3j) and b=ti+dj(d>0 and i and j are unit vectors) and |b|=1 Find t and d? I know we have to use the cross product here. a.b=|a||b|*cos(?/2) (2i+3j)(ti+dj)= ?13*1*0 2t+3j=?13*0 How do we find t and d?
  60. Chemistry

    What makes the strongest cation in water? Al Na Fe K Mg I know that the OH^- ions from water are enough for the Al(OH)3 and Fe(OH)3 precipitates to appear and we've been taught that K,Na compounds are soluble in water too. And Mg(OH)2 needs a higher OH^- concentration to ...
  61. stat

    Use table A - 2 to find the probability of a randomly selected value is between 0.7 and 1.98.
  62. stats need help

    If all the values in a data set are converted to z-scores, the shape of the distribution of the z-scores will not be the same as the distribution of the original data. True or False?
  63. Help me with math

    Find the variance for the given data. Round your answer to two decimal places. 5.0, 8.0, 4.9, 6.8, and 2.8
  64. Math need help

    Identify the type of observational study. Researchers plan to collect data by interviewing patients who have cardiac by-pass surgery at several local hospitals beginning in January 2014. Cross-sectional Retrospective Prospective None of these
  65. math

    i am a 3 digit number. my ones is one more than my tens. my tens digit is 0. my hundreds is 4 more than my ones. what number am i?
  66. government

    According to Journalism(.)org, most Americans get their political news from cable television. 24% of Americans reported that cable tv news was their main source of political information, followed by 16% saying social media. Only 3% and 2% of Americans said they got their news ...
  67. Chemistry

    An unknown monoprotic acid has a pH of 2.87. Is this acid weak or strong if 22.32 mL of 0.112 M NaOH is required to titrate 25.00 mL of the acid? If the acid is weak, calculate its Ka. Answer is Ka = 1.8 x 10^-5, but I don't know how to get there. Any help would be ...
  68. Chemistry

    A 25.00 mL sample of a soft drink was titrated using 12.10 mL of 1.50 M NaOH. Given that the soft drink's monoprotic acid has a Ka value of 2.8 x 10^-5, predict the pH of the soft drink. I know that the answer is pH 2.85 (our practice questions have an answer key) but I&#...
  69. Social Studies

    How can a free press hold the government accountable? a.hosting opinion panels** b.offering prior restraint c.accessing classified info d.summarizing government actions
  70. math

    When baking a cake, you have a choice of the following pans: a round cake pan that is 2 inches deep and has a 7 inch diameter a 6 inch × 9 inch rectangular cake pan that is 2 inches deep a. Which of these pans has the larger volume? Justify your answer. b. Excluding the ...
  71. math

    A man travels 12km due north, then 5km due east and then back to the starting point on a straight road. What is the total distance traveled?
  72. Algebra

    Enterprise chargesa flat fee of $500 and an additional $2.45 per mile hertz charges a flat fee of $70 and an additional $1.25 per mile driven write an equation to represent the cost, y, of driving x miles with enterprise.
  73. Calculus

    I am given the true of false question: If f(x) is continuous and 0<=f(x)<=1 for all x in the interval [0,1], then for some number x f(x)=x. This seems intuitively true, but I'm not sure. All help is greatly appreciated.
  74. math

    How much money must Andrea invest for 2 years in an account that earns an annual simple interest rate of 8% if she wants to earn $500 from the investment?
  75. MATH

    The Bishop's Peak 4-H club is having its annual fundraising dinner. Adults pay $25 apiece and children pay $10 apiece. If the number of adult tickets sold is twice the number of children's tickets sold, and the total income for the dinner is $1,800, how many of each ...
  76. Science

    How many grams of Sodium chloride are in 53.2 g of solution that is 0.50% by mass sodium chloride?
  77. Maths

    So route one will be 52/60 which equal 0.86 recurring and route 2 would be 0.86. So which is faster - is it router 2 and by how much? Thanks.
  78. Maths

    Route 1 - 52 miles at 60mph. Route 2 - 43 miles at 50mph. Which route is faster and by how much? Thanks.
  79. science

    A 50-kg object moving at 12 m/s has a momentum of 600 kg ´ g m/s. What is the mass of an object, moving at 4 m/s that has the same momentum?
  80. ELA

    so wuts the answer
  81. Political Science

    Is it better for legislators to answer to party leadership or to the median voter? Why or why not? Just pros and cons of both would be of immense help to begin research to answer this prompt
  82. physics

    Consider a wire in the shape of a semi-circle of radius R, with a total positive net charge Q vistributed over the wire uniformly. Divide the wire into at least 8 equal point-like “chunks” of charge. Then, for each “chunk,” sketch (on the same diagram) the ...
  83. physics

    If a segment of wire has a net charge (uniformly distributed), and then its length is increased by 50%,by what factor has its charge density changed? If the original charge was 10.0 nC, how much charge must then be added to restore the wire’s original charge density?
  84. physics

    What do you mean when you say NO?
  85. physics

    Consider a wire in the shape of a semi-circle of radius R, with a total positive net charge Q distributed over the wire uniformly. Divide the wire into at least 8 equal point-like “chunks” of charge. Then, for each “chunk,” sketch (on the same diagram) the ...
  86. physics

    How is it 3/2 the length?
  87. physics

    If a segment of wire has a net charge (uniformly distributed), and then its length is increased by 50%,by what factor has its charge density changed? If the original charge was 10.0 nC, how much charge must then be added to restore the wire’s original charge density?
  88. physics

    AN OCEAN WAVE TRAVELS 18.8 METERS IN 5.1 SECONDS. THE DISTANCE BETWEEN THE 2 NEAREST WAVE CREST IS 4.1 METER. WHAT IS THE FREQUENCY?
  89. physics

    Evaluate the following statement (T/F/N), explain: If you reduce by half the distance between two point charges, you double the magnitude of electrical force that each exerts on the other.
  90. Science. HELP!!

    If you decrease the frequency of a wave, how does the velocity change?
  91. social studies

    calm down you dont have to wright a essay i forgot the s
  92. social studies

    Which set correctly identifies the features shown on the map 1. A Andes Mountains. B Pamps 2. B Atacama Desert C Pamps 3.A Atacama Desert D Andes Mountains 4. C Andes Mountains D Pamps i think it is 1 im not sure
  93. Science! NEED HELP URGENT

    What effect does amplitude have on velocity?
  94. ELA

    "It seems to me that almost everything is a waste of time," he remarked one day as he walked dejectedly home from school. "I can't see the point in learning to solve useless problems, or subtracting turnips from turnips, or knowing where Ethiopia is or how ...
  95. Algebra2

    thanks
  96. MATH URGENT HELP!

    you put 5,000 in an account that is compounded quarterly. the annual interest rate ,r, is 4%. how much will be in the account after 10 years?
  97. word problems

    Thank you
  98. word problems

    In certain deep parts of oceans, the pressure of sea water, in pounds per square foot, at a depth of d feet below the surface, is given by P=16+7d/11 If a scientific team uses special equipment to measures the pressure under water and finds it to be 646 pounds per square foot...
  99. Math

    Name the population and the sample in these two 1) The number of roadrunners born within a 50-mile radius of lubbock 2) The cars traveling at a 75 kilometers per hour between beaumont and lufkin
  100. math help ASAP

    NO SORRY NOT B I MENT D