Questions Asked on
June 21, 2013

  1. chemistry

    O2 effuses at a rate that is _____ times that of Xe under the same conditions. rate 02/rate x2 = ?

    asked by Annie
  2. Psychology

    Describe three important functions of the self. Give examples of each.

    asked by Jay
  3. Chemistry

    If the absolute temperature of a gas is doubled, what happens to the root-mean-square speed of the molecules?

    asked by Matt
  4. Chemistry

    Reaction of hydrazine with chlorate ions N2H4(g) + ClO3-(aq) → NO(g) + Cl-(aq) Balanced: 3N2H4(g) + 4ClO3-(aq) → 6NO(g) + 6H2O(l) + 4Cl-(aq) Reducing agent: ClO3- Oxidizing agent: N2H4 Right?

    asked by Sara
  5. math

    Suppose that a hypothesis test is to be carried out by using á = 0.05. What is the probability of committing a type I error? (Give your answer correct to two decimal places.) I can not figure out the formula for this I have tried several and they do not

    asked by Sue 8
  6. chemistry

    if the partial pressure of the diatomic gas is .300 atm, what is the total pressure? 6 blue dots 5 orange dots 3 green dots consisting of 2 dots each (diatomic gas)

    asked by Annie
  7. math

    The image of the public library is constantly changing, and their online services continue to grow. Usage of the library's home page grew by 17% during the past 12 months. It has been estimated that the current average length of a visit to the library's

    asked by Sue 8
  8. chem

    Determine the equilibrium constant for the following reaction. 2 Fe3+(aq) + H2(g) 2 Fe2+(aq) + 2 H+(aq)

    asked by amelia
  9. Chemistry

    A total charge of 96.5 kC is passed through an electrolytic cell. Determine the quantity of substance produced in each of the following cases. (a) the mass (in grams) of silver metal from a silver nitrate solution (b) the volume (in liters at 273 K and

    asked by Sara
  10. managerial economic

    . A doctor spent two weeks doing charity medical work in Mexico. In calculating her taxable income for the year, her accountant deducted as business expenses her round-trip airline ticket, meals, and a hotel bill for the two weeks stay. she was surprised

    asked by air
  11. Math

    A model rocket is launched vertically upward so that its height (measured in feet) t sec after launch is given by the following. h(t) = -16t2 + 272t + 8 (a) Find the times when the rocket is at a height of 488 ft. t = sec (smaller value) t = sec (larger

    asked by Talbert
  12. Math

    A commercial refrigerator unit accidentally releases 12.5 L of ammonia gas at SATP. Determine the mass and number of molecules of ammonia gas released. Please if possible show the steps because I have an exam in an hour and I was trying this question and

    asked by Kristen
  13. managerial economics

    Explain why it would cost Rafael Nadal or Venus Williams more to leave the professional tennis tour and open a tennis shop than it would for the coach of a university tennis team to do.

    asked by air
  14. managerial economics

    Using optimization theory, analyze the following quotations: a. “The optimal number of traffic deaths in the United States is zero.” b. “Any pollution is too much pollution.” c. We cannot pull U.S. troops out of Iraq. We have committed to such

    asked by air
  15. Chemistry

    Wha volum of steam is produced when log of propyrie is burnt in excess oxygen at s.t.p?

    asked by Samuel
  16. contemporary math

    Varsity Press, a publisher of college textbooks, received a $70,000 promissory note at 12% ordinary interest for 60 days from one of its customers, Reader’s Choice Bookstores. After 20 days, Varsity Press discounted the note at the Grove Isle Bank at a

    asked by Trish
  17. Chemistry

    2CH3CH2CH2OH(l)+9O2(g)→6CO2(g)+8H2O(g) I have to find the delta G delta G of CH3CH2CH2OH(l)=−360.5 KJ/Mol delta G of O2(g)=0 KJ/Mol delta G of CO2(g)=−394.4 KJ/Mol delta G of H20(g)=−228.6 KJ/Mol I keep getting -3426.2 KJ/Mol but its not correct.

    asked by dave
  18. Chemistry

    A 230.-mL sample of a 0.280 M CaCl2 solution is left on a hot plate overnight; the following morning, the solution is 1.10 M. What volume of water evaporated from the 0.280 M CaCl2 solution?

    asked by Ashley
  19. managerial economics

    Cypress River Landscape Supply is a large wholesale supplier of landscaping materials in Georgia. Cypress River’s sales vary seasonally; sales tend to be higher in the spring months than in other months. a. Suppose Cypress River estimates a linear trend

    asked by air
  20. Chemistry

    Calculate the equilibrium constant for the following reaction at room temperature, 25 ∘C: N2(g)+O2(g)→2NO(g)

    asked by dave
  21. Chemistry

    Consider this molecular-level representation of a gas. 5 orange 6 green---> 3 pairs 6 blue If the partial pressure of a diatomic gas is .750 atm, what is the total pressure?

    asked by Sarah
  22. Chemistry

    Predict the standard emf of each of the following galvanic cells. (a) Sn(s)|Sn2+(aq)||Sn4+(aq),Sn2+(aq)|Pt(s) (b) Pt(s)|Fe3+(aq),Fe2+(aq)||Ag+(aq)|Ag(s) I don't want the answer, I want the procedure/methods of how to do these types of problems.

    asked by Sara
  23. Calculus 2

    Use the method of cylindrical shells to find the volume V generated by rotating the region bounded by the given curves about x = 4. y = 3 x^4 y = 0 x = 2

    asked by Liz
  24. managerial economics

    Fortune magazine reported that SkyWest, an independent regional airline, negotiated a financial arrangement with Delta and United to provide regional jet service for the two major airlines. For its part of the deal, SkyWest agreed to paint its jets the

    asked by air
  25. contemporary 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

    asked by Trish
  26. math check

    While writing an article on the high cost of college education, a reporter took a random sample of the cost of new textbooks for a semester. The random variable x is the cost of one book. Her sample data can be summarized by the following. (Give your

    asked by tom9
  27. Chemistry

    Can someone please explain this to me?! Please! Thank you! How much (in kilograms) ethylene glycol antifreeze (C2H6O2)(molar mass 62.02 g/mol) has to be added to 14.4 kg of water to get a mixture that freezes at -15.5 degrees C. For water Kf = 1.86 degrees

    asked by Katie
  28. science (physics)

    a skaterboarder is moving 5.25 m/s when he starts to roll up a frictionless hill. how much higher is he when he comes to a stop? (energy problem)

    asked by maria
  29. Chemistry help

    What mass of silver chloride can be prepared by the reaction of 160.0 mL of 0.26 M silver nitrate with 150.0 mL of 0.24 M calcium chloride? Also, Calculate the concentrations of each ion remaining in solution after precipitation is complete. Cl ‾ NO3‾

    asked by Ashley
  30. Chemistry

    Balance the reaction of plumbate ions and hydrochlorite ions: Pb(OH)42-(aq) + ClO-(aq) → PbO2(s) + Cl- I put: Pb(OH)3-(aq) + ClO-(aq) → PbO2(s) + Cl-(aq) + H2O(l) + OH-(aq) It said: The reaction described in your answer is not balanced. One or more of

    asked by Sara
  31. Chemistry

    What is the complete ionic equation for NaOH(aq) + Fe(NO3)3(aq)? I'm putting this on webassign, but it's telling me "One or more of your reactants appear to have an improper oxidation state. One or more of your products contains an improper oxidation

    asked by Ashley
  32. Chemistry

    Please help me what is the ionic equation for AgNO3(aq) + Na3PO4(aq)? Not sure what I'm doing wrong here is what I have so far 3Na^+(aq) + PO_4^-3(aq) + 3Ag^+(aq) +3NO^3-(aq) --> 3Na^+(aq) + 3NO^3-(aq) + Ag_3PO_4(s)

    asked by Ashley
  33. physics

    a skaterboarder is moving 5.25 m/s when he starts to roll up a frictionless hill. how much higher is he when he comes to a stop? (energy problem)

    asked by maria
  34. Physics

    A rope exerts a constant horizontal force of 203N pulling a 68-kg crate across the floor. The velocity of the crate is observed to increase from 3m/s to 5m/s in a time of 4 seconds under the influence of this force and the frictional force exerted by the

    asked by Tim
  35. English 101

    memo given in which there was no punctuation...only sentences. Please let me know if I have put the semicolon, etc in right place and if third shift should be hyphenated. Thanks!!! Our production plant has made the decision to run third shift and weekends

    asked by cynthia
  36. physics

    a skaterboarder is moving 5.25 m/s when he starts to roll up a frictionless hill. how much higher is he when he comes to a stop? (energy problem)

    asked by maria
  37. Business math

    Alicia deposited $2000 into saving. The bank pays 6% ordinary interest. How many years will it take for the $2000 to reach $2600?

    asked by lost
  38. Chemistry

    Balance each of the following skeletal equations by using oxidation and reduction half reactions. All the reactions take place in acidic solution. Identify the oxidizing agent and reducing agent in each reaction. (Use the lowest possible coefficients.

    asked by Sara
  39. math-calculus 2

    Consider the given curves to do the following. 64 y = x^3, y = 0, x = 4 Use the method of cylindrical shells to find the volume V generated by rotating the region bounded by the given curves about y = 1.

    asked by Biff
  40. math

    A trucking firm delivers appliances for a large retail operation. The packages (or crates) have a mean weight of 306 lb. and a variance of 2209. (Give your answers correct to four decimal places.) (a) If a truck can carry 3940 lb. and 25 appliances need to

    asked by Sue7
  41. managerial economics

    An article in the Wall Street Journal discusses a trend among some large US Corporation to base the compensation of outside members of their boards of directors partly on the performance of the corporation. “This growing practice more closely aligns the

    asked by air
  42. Chemistry

    What volume of 0.300 M Na3PO4 is required to precipitate all the lead(II) ions from 130.0 mL of 0.400 M Pb(NO3)2?

    asked by Ashley
  43. Chemistry

    A 0.1052 g sample of copper metal is dissolved in 55 mL of concentrated HNO3 to form Cu2+ ions and then water is added to make a total volume of 208.5 mL. (Calculate the molarity of Cu2+.)

    asked by Ashley
  44. Chemistry

    What mass of silver chloride can be prepared by the reaction of 160.0 mL of 0.26 M silver nitrate with 150.0 mL of 0.24 M calcium chloride? Also, Calculate the concentrations of each ion remaining in solution after precipitation is complete. Cl ‾ NO3‾

    asked by Ashley
  45. trig

    choose the expression that is equivalent to the given expression. 2 cos^2 4x-1

    asked by tony
  46. managerial economics

    What are the relevant and irrelevant costs? Two partners who own Progressive Business Solutions, which currently operates out of an office in a small town near Boston, just discovered a vacancy in an office building in downtown Boston. One of the partners

    asked by air
  47. Eng

    The second Greek root of the word psychosomatic means A. fluid. B. body. C. mental D. disease. Answer is b

    asked by Jen
  48. math

    Consider the following. (Give your answers correct to four decimal places.) (a) Determine the level of confidence given the confidence coefficient z(á/2) for z(á/2) = 1.65. Incorrect: Your answer is incorrect. . (b) Determine the level of confidence

    asked by Sue 8
  49. Chemistry

    What volume of 0.300 M Na3PO4 is required to precipitate all the lead(II) ions from 130.0 mL of 0.400 M Pb(NO3)2? Can you please show the steps I have no idea how to solve

    asked by Ashley
  50. Math 116

    Consider the following system of equations. y=2x-2 y-2x=9 What can you conclude about the system of equations? a. The system of equations is inconsistent. b. The system of equations is dependent. c. The system of equations is independent. d. none of these.

    asked by Queta
  51. Chemistry

    Either my online portal hates me, or I don't understand how to balance properly. QUESTION Balance reaction of arsenic(III) sulfide with nitric acid As2S3(s) + NO3-(aq) → H3AsO4(aq) + S(s) + NO(g) Is this the correct balanced equation? 32 H2O + 24

    asked by Sara
  52. statistics

    If a teacher wants to test her belief that more than 5 students in college classes typically receive A as a grade, she'll perform? a. two tailed testing of a mean b. two tail testing of a proportion c. one tail testing of a proportion d. one tail testing

    asked by Rald
  53. Law and Ethics

    1. An insured patient pays a flat fee for certain services. The amount that the patient must pay is the . A. deductible B. copayment C. formulary D. coinsurance My answer B 2. Ravi and Juli are discussing the National Practitioner Dta Bank. Ravi says that

    asked by kim
  54. chemistry

    1)nitrogen atom has atomic no 7 and mass no 14.hydrogen atom has atomic no 1 and mass no 1.what is no of protons and neutrons of ammonium ions

    asked by vishal
  55. English

    May I take your order? - Yes,please. I'll have a chicken sandwich. -Sure. Anything else? (In this dialogue, what is the meaning of 'Sure'? What other expressions can we use instead of 'Sure'?)

    asked by rfvv
  56. physics

    an airplane was moving with a velocity equal to 150 mph when the velocity was increased with uniform acceleration to 300 mph in 5 min. Calculate the number of miles the airplane traveled during that interval

    asked by Jen
  57. History

    Political factionalism in the U.S. during the 19th century was fueled by the emergence of a unique American culture and the transition from an agrarian to market economy. Please give me some information on writing about this.

    asked by Cassandra
  58. Chemistry

    A 0.1052 g sample of copper metal is dissolved in 55 mL of concentrated HNO3 to form Cu2+ ions and then water is added to make a total volume of 208.5 mL. (Calculate the molarity of Cu2+.)

    asked by Ashley
  59. Psychology

    Donnie was on the verge of experiencing road rage. The teenagers in front of him were reckless and disrespectful. Suddenly he realized that one of the boys was his brother and he began to laugh. Donnie's emotional response is best explained by: A. the

    asked by Angela
  60. Chemistry

    I have 0.400*0.13=5.2 so far What's next? What volume of 0.300 M Na3PO4 is required to precipitate all the lead(II) ions from 130.0 mL of 0.400 M Pb(NO3)2?

    asked by Ashley
  61. Chemistry

    Using the reaction and the E∘ given below 2Co^3+(aq)+2Cl^−(aq)→2Co^2+(aq)+Cl2(g) E∘=0.46 V what is the cell potential at 25 ∘C if the concentration are [Co^3+]= 0.565M , [Co^2+]= 0.554M , and [Cl^−]= 0.838M and the pressure of Cl2 is PCl2=

    asked by Aria
  62. statistics

    A normal distribution has a standard deviation equal to 23. What is the mean of this normal distribution if the probability of scoring above x = 181? record to 1 decimal place

    asked by Paisley
  63. math

    ali spends 2/3 of his money in a shop. he spends 1/4 of the remainder in another shop. what fraction of the original sum will be left? please provide all the steps

    asked by frodo
  64. math check

    The amount of fill (weight of contents) put into a glass jar of spaghetti sauce is normally distributed with mean ì = 843 grams and standard deviation of ó = 9 grams (ii) Find the standard error of the x distribution. (Give your answer correct to two

    asked by Sue7
  65. biochemistry

    the freezing point of blood serum is about -0.56 deg C. What is the osmotic pressure at 37 deg C?

    asked by Caselyn
  66. physics

    a tennis ball was held 4.5 ft above the surface of a tennis court and was thrown vertically downward with an initial velocity whose magnitude was 12 fps. Determine the magnitude of the velocity of the ball just before it struck the surface of the court

    asked by Jen
  67. Engineering science

    A lorry has a mass of 5640kg and accelerates uniformly from rest to reach a velocity of 100km/h in 10s. Determine the acceleration of the lorry. Determine the force needed to accelerate the lorry

    asked by Jordan
  68. trig

    Write the expression as the sine, cosine, or tangent of a double angle. Then find the exact value of the expression. 2tan 2pi/3 / 1-tan^2 2pu/3

    asked by tony
  69. managerial economics

    An article in The Wall Street Journal reported that large hotel chains, such as Marriott, are tending to reduce the number of hotels that they franchise to outside owners and increase the number the chain owns and manages itself. Some chains are requiring

    asked by air
  70. trig

    Use the fundamental identities to simplify the expression. cos^2θ/sin^2θ+cscθsinθ I got tan^2theta

    asked by tony
  71. Math 116

    Identify the solution(s) of the system of equations, if any. -6x-2y=12 4y=-12x-24 a. no solution b. (0,-2) c.(-2,0) d.infinitely many solutions

    asked by Queta
  72. Mechanical Engineering

    a tennis ball was held 4.5 ft above the surface of a tennis court and was thrown vertically downward with an initial velocity whose magnitude was 12 fps. determine the magnitude of the velocity of the ball just before it struck the surface of the court

    asked by Jen
  73. math

    The real numbers x and y satisfy the nonlinear system of equations 2x^2−6xy+2y^2+43x+43y=174 x^2+y^2+5x+5y=30. Find the largest possible value of |xy|.

    asked by anonymous
  74. Physics

    A rope exerts a constant horizontal force of 203N pulling a 68-kg crate across the floor. The velocity of the crate is observed to increase from 3m/s to 5m/s in a time of 4 seconds under the influence of this force and the frictional force exerted by the

    asked by Tim
  75. Science

    A lorry has a mass of 5640kg and accelerates uniformly from rest to reach a velocity of 100km/h in 10s. Determine the acceleration of the lorry. Determine the force needed to accelerate the lorry

    asked by Jordan
  76. science

    Frenda et al. (2013, p. 285) stated "first, because Slate gathered little information about its participants other than political ideology, it may be that variables confounded with ideology—and not ideology per se—were responsible for the differences

    asked by pleaseanswer
  77. trig

    Choose the expression that is equivalent to the given expression. sin 6x tan 3x I got 2 sin^2 3x

    asked by tony
  78. trig

    slove the equation exactly over the interval [0, 2pi) sinx=1-2sin^2x

    asked by tony
  79. Chemistry(Answer check)

    A 0.1052 g sample of copper metal is dissolved in 55 mL of concentrated HNO3 to form Cu2+ ions and then water is added to make a total volume of 208.5 mL. (Calculate the molarity of Cu2+.) 0.1052g*63.546/6.022e23 did I set it up right?

    asked by Ashley
  80. hum111

    How can an athlete manipulate his or her endocrine system function to enhance athletic performance? What might be some risks of doing so?

    asked by rosita
  81. Chemistry please help

    I can't find the answer of A 0.1052 g sample of copper metal is dissolved in 55 mL of concentrated HNO3 to form Cu2+ ions and then water is added to make a total volume of 208.5 mL. (Calculate the molarity of Cu2+.) I calculated

    asked by Ashley
  82. math

    A sample of 145 values is randomly selected from a population with mean, ì, equal to 45 and standard deviation, ó, equal to 23. (Give your answers correct to one decimal place.) (a) Determine the interval (smallest value to largest value) within which

    asked by Sue7
  83. chemistry

    Calculate the mass in grams for a sample of water that absorbs 8200J when its temperature rises from 20.4∘C to 93.8∘C.

    asked by charles
  84. Chemistry(steps check)

    I figured out the NO3- which is 0.13, I'm stuck on the Cl- I have 0.24*2-0.0416= 0.4384 but I'm being told that's wrong What mass of silver chloride can be prepared by the reaction of 160.0 mL of 0.26 M silver nitrate with 150.0 mL of 0.24 M calcium

    asked by Ashley
  85. chemistry

    A 8.90-L container holds a mixture of two gases at 45 C. The partial pressures of gas A and gas B, respectively, are .294 atm and .860 atm. If .100 mol of a third gas is added with no change in volume or temperature, what will the total pressure become?

    asked by Annie
  86. Math 116

    identify the solution (s) of the system of equations, if any. -3x-4y=2 8y=-6x-4 a. infinitely many solutions b. (-16/9, 5/6) c.(-2/3,0) d. no solution

    asked by Queta
  87. math help

    so you don't think I am homework dumping these are the answers that I came up with and they were wrong. (a) .8259 and (b).9732 I am not sure if I am using the correct formula or not

    asked by Sue 8
  88. math

    A sequence of polynomials gk(x) is defined recursively as follows. g0(x)=x; gk+1(x)=gk(x^2+2x)−gk(x) Find the last three digits of the coefficient of x^2 in g299(x).

    asked by anonymous
  89. math

    For every prime p consider all polynomials f(x) with integer coefficients from 1 to p and degree at most p−1, such that for all integers x the number f(2x)−f(x) is divisible by p. Find the sum of all primes p

    asked by anonymous
  90. life orientation

    Provide five ways in which you critically discuss how life style /behaviour disease impact on the teenage

    asked by Anonymous
  91. life orientation

    Provide recommendations on how to address the topic (water pollution or HIV/AIDS)

    asked by Anonymous
  92. chem

    Determine the unknown concentration of the ion in each of the following cells. (a) Pb(s) | Pb2+(aq, ?) || Pb2+(aq, 0.10 mol·L-1) | Pb(s), E = +0.047 V. (b) Pt(s) | Fe2+(aq, 1.0 mol·L-1) , Fe3+(aq, 0.10 mol·L-1) || Fe3+(aq, ?), Fe2+(aq, 0.0010 mol·L-1)

    asked by maya
  93. Chemistry

    Please please help me on this equation I'm stuck and your steps are confusing. Calculate the concentrations of each ion remaining in solution after precipitation is complete. (Enter a 0 if none of the ion remains.) Cl ‾ Ca2+ I have Ag+=0 and NO3^-3= 0.13

    asked by Ashley
  94. math check

    Complete the following hypothesis test: Ho: ì = 52, Ha: ì < 52, á = 0.01 using the data below. 43 48 44 48 42 60 54 44 50 35 48 58 ii) Find the p-value. (Give your answer correct to four decimal places.) Incorrect: Your answer is incorrect. . 0.0928 was

    asked by tom9
  95. Physics

    In order to stop a Ferris wheel, a force is applied that accelerates at a rate of -0.010rad/s^2. How long will it take the Ferris wheel to stop?

    asked by Julie
  96. Eng

    If you're altruistic, you behave in a ___ way. A. selfish. B. self-obsessed. C. selfless. D. Self-aware. Answer is C.

    asked by Jen
  97. Math Graph

    In polar coordinates, the graph r=sin(θ)/cos^2(θ) represents the function y=(a_n)*x^n+(a_(n−1))*x^(n−1)+…+a_0 in Cartesian coordinates, where n is a positive integer and (a_i) are real numbers. What is the value of n?

    asked by Crow
  98. Math Trigonometry

    Given w=2+2i and v=−5√3+5i, vw^2 can be expressed as r*(cos(α∘)+i*sin(α∘)), where r is a real number and 0≤α≤360. What is the value of r+α?

    asked by Crow
  99. Math Trigonometry

    Let z be a complex number such that z=2(cos3∘+icos87∘). Then z^6 can be expressed as r(sinα∘+icosα∘), where r is a real number and 0≤α≤90. What is the value of r+α?

    asked by Crow
  100. trig

    Multiply and simplify. (cos x - sin x)^2

    asked by tony
  101. trig

    fidn all values of tehta in [0, 360) that satisfy the equation. √(3)tan(θ/2)=-1 I have four choices 300, 330, 150 , 120 and i got 120

    asked by tony
  102. maths-trignometry(urgent)

    without using calculator, find the Value of following is cosec(-38888)

    asked by anoynomous
  103. trig

    use an identity to write the expression as a single trignometric function. squ root 1-cos48°/2

    asked by tony
  104. Early childhood education

    Which of the following is NOT always true about parents who ask for special treatment? A. They are trying to take advantage of a teacher. B. They want the best for their child. C. They require thoughtful consideration of how to provide for request. D. They

    asked by farida
  105. Home, school and community

    A teacher who makes a genuine effort to understand and solve problems that parents may have in a situation, but still finds no solution should: A. ask for the child to be moved to another class. B. remember that he or she is not alone. C. do exactly what

    asked by farida
  106. Eng

    The meaning of the word psychosomatic implies A. feigned illness or injury. B. the influence of the mind on the body. C. self-medication. D. an undiagnosed illness. Answer is B.

    asked by Jen
  107. Psychology

    Verbal skills and muscular coordination have been observed to improve in women when: A. estrogen levels are relatively high. B. they are exposed to experiences requiring high level skills. C. pressure to perform is reduced. D. calcium levels are increased.

    asked by Angela
  108. math

    A sample of 30 of 178 funded projects revealed that 12 were valued at $17,360 each and 18 were valued at $20,280 each. From the sample data, estimate the total value of the funding for all the projects. (Enter your answers to two decimal places.) $ .

    asked by Sue 8
  109. business

    Euromart Tile Company borrowed $40,000 on April 6 for 66 days. The rate was 14% using the ordinary interest rate method. On day 25 of the loan, Euromart made a partial payment of $15,000, and on day 45 of the loan, Euromart made a second partial payment of

    asked by lost
  110. Physics

    If a plane is flying 40 mph with a tailwind of 6 mph, how fast is the plane going.

    asked by April
  111. Physics

    (delta)Eg = -14.7J Therefore, Ek = -(delta)Eg = 14.7J I don't understand how you'd come to the above conclusion? Does Ek just always equal -(delta)Eg?

    asked by a Canadian
  112. Math 116

    Identify the solution (s) of the system of equations, if any. x+3y=5 6x-6y=14 a. (3,3/2) b.(3,2/3) c.(3/2,3) d. (2/3,3)

    asked by Queta
  113. Math 116

    Identify the solution (s) of the system of equations, if any. 2x+4y=11 y=5-5x a. (2.5,-0.5) b. (2.5,0.5) c. (-0.5,2.5) d. (0.5,2.5)

    asked by Queta
  114. math

    (x+3)(x+6)(x-7) Multiply the binomial

    asked by mcgraw
  115. English 101

    Is this memo correct (semi-colon) in right sentence and time/date correct? Thanks! There were no punctuations at all when we were given this. We are going to make a few changes in the health plan we now offer; The Economy Plan and the Standard Plan—both

    asked by cynthia
  116. physics

    Often in physics we won't be able to predict motion of a bunch of objects exactly and so we resort to statistical methods. An example of a statistical approach is the resulting profile of a bunch of disks dropped through a series of pegs. As each disk

    asked by anonymous
  117. Physics

    A tie bar is made of a material having a tensile strength of 231MPa and has to carry a load of 225kN. What is the diameter of the bar if a factor of safety of 7 is applied? Where do I begin?

    asked by Danny
  118. Physics

    What is the factor of safety of a steel hanger having an ultimate strength of 550.000MPa and supporting a load of 64000.000N. ANS= Round to 3 decimal places Where do I begin?

    asked by Danny
  119. Algebra

    Determine whether each function is odd, even or neither. a) f(x) = -6x^5+2x^3 b) f(x) = x^4-x^2+1

    asked by AZ
  120. math

    The number (27+200^1/2)^1/2 can be simplified to the form a+b√, where a and b are positive integers. Find the product ab

    asked by raja harishchandra
  121. munger middle school

    If the design fee is $80 and the monthly studio rent $1,600 write and equation for profit

    asked by cynthia pope
  122. Finance

    How do you figure out the value of a stock with a $2.50 dividend just paid and an 8% required return with 0% growth

    asked by Denise
  123. Math

    How would you do this problem. What is the growth rate of the stock with a $3.00 expected dividend and a $20.60 price with 15%required return?

    asked by Robin
  124. Psychology- HELP!!!!

    Verbal skills and muscular coordination have been observed to improve in women when: A. estrogen levels are relatively high. B. they are exposed to experiences requiring high level skills. C. pressure to perform is reduced. D. calcium levels are increased.

    asked by Angela
  125. Physics

    we have a test coming up and I cannot figure out the practice question. Can somebody please help? Aaron throws a 7.5 kg bowling ball by applying a 45 N force for a time of 0.90seconds. What is the impulse Aaron applies to the ball? What is the ball's speed

    asked by Amalia
  126. Math

    Consider the approximately normal population of heights of male college students with mean ì = 69 inches and standard deviation of ó = 4.6 inches. A random sample of 25 heights is obtained. (b) Find the proportion of male college students whose height is

    asked by Sue7
  127. math

    Jane uses a jar to save her money. She saves $10 from her weekly allowance in the 1st week, $12 in the 2nd week, $14 in the 3rd week, and so on. How much money will she have saved in 10 weeks?

    asked by terrell
  128. physics

    a watermelon has a mass of 8kg and 600 g . how mich force of gravity of the earthwill it experience ?what will be its weight on the earth and the moo

    asked by Anonymous
  129. Nutrition-Help Please

    What does LBM (muscle mass) have to do with BMR? Identify the four primary factors that most directly affect basal metabolism by affecting LBM.

    asked by Kimberly
  130. maths-trignometry

    without using calculator, find the Value of following is cosec(-38888)

    asked by anoynomous
  131. Ashford

    2. A sentence is said to be truth-functional if and only if (Points : 1)

    asked by Mallory
  132. Physics

    A 2.0X10^4 N car is stopped on a 30 degree hill. If friction is negligible, what is the force of the car pushing into the hill?

    asked by Renee
  133. Eng

    Michael is entirely _____ in gambling. A. disinterested B. noninterested C. misinterested D. uninterested Answer is "D"

    asked by Jen
  134. trig

    Solve the right triangle with the given sides and angles. a = 3.0, B = 31.0°

    asked by tony