MS

Most popular questions and responses by MS
  1. chemistry

    When heated, elemental phosphorus, P4, produces phosphine, PH3, and phosphoric acid, H3PO4. How many grams of phosphine are produced if 56 grams of P4 have react

    asked on May 10, 2013
  2. calculus

    Find complete length of curve r=a sin^3(theta/3). I have gone thus- (theta written as t) r^2= a^2 sin^6 t/3 and (dr/dt)^2=a^2 sin^4(t/3)cos^2(t/3) s=Int Sqrt[a^2 sin^6 t/3+a^2 sin^4(t/3)cos^2(t/3)]dt =a Int Sqrt[sin^4(t/3){(sin^2(t/3)+cos^2(t/3)}]dt=a Int

    asked on September 18, 2013
  3. math

    according to a college survery, 22% of all students work full time. find the mean for the number of students who work full time in samples of 16. round to the nearest tenth how do we do this on a TI84 calculator

    asked on July 25, 2016
  4. physics

    A child operating a radio-controlled model car on a dock accidentally steers it off the edge. The car's displacement 1.0 s after leaving the dock has a magnitude of 12.8 m. What is the car's speed at the instant it drives off the edge of the dock?

    asked on January 26, 2011
  5. MSJH

    When heated, elemental phosphorus, P4, produces phosphine, PH3, and phosphoric acid, H3PO4. How many grams of phosphine are produced if 56 grams of P4 have reacted?

    asked on May 10, 2013
  6. English

    What is the order of adjective in a sentence?

    asked on November 11, 2018
  7. SS

    Throughout the 1900s, many countries in Africa and Asia gained independence from European colonial powers. India is one of these countries, having gained their independence from Britain in 1947. Why did people in India want independence? In what ways was

    asked on November 16, 2017
  8. calculus

    Find circumference of the circle r=2acos theta. s= Int (0 to 2pi) of Sqrt(4a^2cos^2 theta+4a^2sin^2 theta)d theta =Int (0 to 2pi)2a*Int theta d theta =2a(2pi-0)=4a*pi Book shows 2a*pi. Am I wrong somewhere?

    asked on September 16, 2013
  9. Calculus

    s=çdx/(4+5cos x). By using t-substitution, i.e. t=tan(x/2) we get cos x=(1-t^2)/(1+t^2) and dx=2dt/(1+t^2). Substituting in s and simplifying, we get s= 2çdt/4(1+t^2)+5(1-t^2)=2çdt/(9-t^2). Using standard result çdx/(a^2-x^2)=1/a*arctanh (x/a)

    asked on October 30, 2013
  10. physicsn

    An Olympic turkey moving at 20.0 m/s down a 30.0° slope encounters a region of wet snow and slides 145 m before coming to a halt. What is the coefficient of friction between the turkey and the snow? The accelerations down the hill is 1.4 m/s^2.

    asked on October 27, 2015
  11. Calculus

    Find the area cut off by x+y=3 from xy=2. I have proceeded as under: y=x/2. Substituting this value we get x+x/2=3 Or x+x/2-3=0 Or x^2-3x+2=0 Or (x-1)(x-2)=0, hence x=1 and x=2 are the points of intersection of the curve xy=2 and the line x+y=3. Area under

    asked on April 1, 2014
  12. Calculus

    Q: If y=sinx/(1+tanx), find value of x not greater than pi, corresponding to maxima or minima value of y. I have proceeded thus- Equating dy/dx=0 we get{ (1+tanx)cosx-sinx.sec^2 x}/(1+tanx)^2=0……..(A) Or cosx+sinx=sinx.sec^2 x or cosx= sinx.sec^2-sinx

    asked on June 16, 2014
  13. Calculus

    How to integrate dx/(4-5 sin x) using t-substitution method(i.e. taking tan x/2=t)?

    asked on October 31, 2013
  14. science

    I need a reason the land forms canyons and volcanoes are similar thank you

    asked on November 16, 2017
  15. physics

    An experiment makes use of a water manometer attached to a flask. Initially the two columns in the gas manometer are at the same level and the air pressure in the flask and both sides of manometr is 1 atm. The experiment is set up when the air pressure is

    asked on March 29, 2012
  16. physics

    An experiment makes use of a water manometer attached to a flask. Initially the two columns in the gas manometer are at the same level and the air pressure in the flask and both sides of manometr is 1 atm. The experiment is set up when the air pressure is

    asked on March 23, 2012
  17. plzz help physics

    An experiment makes use of a water manometer attached to a flask. Initially the two columns in the gas manometer are at the same level and the air pressure in the flask and both sides of manometr is 1 atm. The experiment is set up when the air pressure is

    asked on March 29, 2012
  18. Calculus

    Find arc length of y=logx from x=1 to x=2. dy/dx)^2=1/x^2 arc length=Int of [sqrt(1+1/x^2)]dx =Int of [sqrt(1+x^2)/x^2] =Int of [sqrt(1+x^2)]/x from x=1 to x=2. How to proceed further to integrate?

    asked on September 12, 2013
  19. MATHS

    Find arc length of y=logx from x=1 to x=2. dy/dx)^2=1/x^2 arc length=Int of [sqrt(1+1/x^2)]dx =Int of [sqrt(1+x^2)/x^2] =Int of [sqrt(1+x^2)]/x from x=1 to x=2. How to proceed further to integrate?

    asked on September 11, 2013
  20. Calculus

    Book works out integral of sqtr(a^2-x^2)dx as a^2/2*arcsin(x/a)+x/2*sqrt(a^2-x^2) by taking x=a sin theta, and advises to work it out using x=a cos theta. I did and got the first term as -a^2/2*arccos(x/a)and the same second term. This means arcsin

    asked on October 3, 2013
  21. Calculus

    I have done Int(1/ax)dx=1/a*Int(1/x)dx =[(log x)/a] + C. The working in the book is Int(1/ax)dx=1/a*Int(a/ax)dx =[(log ax)/a]+C. Which one is correct and where is the error in my working, if so?

    asked on September 20, 2013
  22. Maths

    Eq of curve is y=b sin^2(pi.x/a). Find mean value for part of curve where x lies between b and a. I have gone thus far- y=b[1-cos(2pi x/a)/2]/2 Integral y from a to b=b/2(b-a)-ab/4pi[sin(2pi b/a)-sin2pi) MV=b/2-[ab sin(2pi b/a)]/(b-a) Ans given is b/a. I

    asked on September 4, 2013
  23. bcc

    One canned juice drink is 30% orange juice, another is 10% orange juice. How many liters of each should be mixed together in order to get 20L that is 18% orange juice?

    asked on November 23, 2011
  24. Calculus

    Find the area cut off by x=4 from the hyperbola x^2/9-y^2/4=1. Answer is 4.982 in the book. I have proceeded as under: Y=2/3*sqrt(x^2-9) and rhe reqd. area is double of integral 2/3*sqrt(x^2-9) from 3 to 4. Int= 2/3*[xsqrt(x^2-9)/2 –

    asked on March 28, 2014
  25. Calculus

    Following 2 questions are from a book at a point where L’Hopital’s Rule, Squeeze Theorem etc. have not been discussed and limits (A) and (B) as given below are to be evaluated by simple methods like algebraic simplification etc. 1. Int. of (xlogx)dx

    asked on March 13, 2014
  26. Calculus

    Following 2 questions are from a book at a point where L’Hopital’s Rule, Squeeze Theorem etc. have not been discussed and limits (A) and (B) as given below are to be evaluated by simple methods like algebraic simplification etc. 1. Int. of (xlogx)dx

    asked on March 12, 2014
  27. Calculus

    Integral of dx/{(x+1)sqrt(x^2+4x+2)} is given as -arcsinh{(x+2)/(xsqrt3)}, but I am not getting it.? The hint given is 'Put 1/(x+1)=t' Using it, the expression reduces to Int. -1/sqrt(1+2t-t^2). How to proceed further to get the desired result?

    asked on February 19, 2014
  28. Calculus

    Integrate x dx/(1-x). I have proceeded thus- Int xdx/(1-x)=int -(x-1+1)/(x-1) =-Int[1+ 1/(x-1)]dx =-Int dx-Int dx/(x-1) =-x-log(x-1). On differentiating, we get original expression- d/dx[-x-log(x-1)]=-1-1/(x-1)=-x/(x-1)=x/(1-x). However, the answer in the

    asked on January 8, 2014
  29. Calculus

    S=Integral xdx/sqrt(x-1). I have proceeded thus- Put sqrt(x-1)=u then x=u^2+1 and dx/sqrt(x-1)=2du. S=(u^2+1)2du/u =(2u+2/u)du=u^2+2 log u +C =(x-1)+ 2 log sqrt(x-1)=(x-1)+log(x-1)+C Required answer is 2/3*(x+2)sqrt(x-1)+C Have I proceeded correctly and if

    asked on November 27, 2013
  30. chemistry

    a solution has gluten concentration of 2000ug/mL at 150uL. if 2uLof that solution is taken out what is the quantity of gluten in ppm?

    asked on March 22, 2012
  1. setswana

    This is a lost cause! These people who post in Setswana (Lesotho) never reply. Ever.

    posted on May 8, 2019
  2. Art

    Yes, a vase.

    posted on May 6, 2019
  3. Science

    Yes, B.

    posted on May 4, 2019
  4. HELP ASAP PLEASE!!!

    You should try reading everything shmoop has about this book. You will understand it better. www.shmoop.com/walk-two-moons

    posted on May 4, 2019
  5. Social Studies

    Yes, B and C.

    posted on May 2, 2019
  6. English

    That’s WAY too long for a thesis statement. And adding to it won’t help! Statement = one sentence. Start with “dance and movement both ... “ and put everything before that inside the paper where it fits.

    posted on May 1, 2019
  7. social studies

    This is Writeacher — on my iPad, not on my computer! I agree with your answer.

    posted on April 29, 2019
  8. government

    I agree with choosing A. The First Amendment is first for a reason!

    posted on April 28, 2019
  9. English

    Boy howdy! You need to study all these terms at chompchomp.com/terms Then try again.

    posted on April 26, 2019
  10. Science

    I guess the writers of that test never lived in the West!!

    posted on April 25, 2019
  11. English

    See Similar Questions and their replies below.

    posted on April 24, 2019
  12. language art

    See Similar questions and the replies below.

    posted on April 23, 2019
  13. history

    Read through Similar Questions below and their answers to see various questions and replies along these lines. Let us know what you decide.

    posted on April 23, 2019
  14. Englis

    Needs clarification and completion.

    posted on April 18, 2019
  15. English

    Someone here MIGHT check what YOU THINK if you post your thoughts.

    posted on April 18, 2019
  16. art and music

    You will need to depend on your text for this one.

    posted on April 14, 2019
  17. art and music

    You will need to depend on your text for this one.

    posted on April 14, 2019
  18. art and music

    You’ll have to depend on what’s in your text. Interpreting art is very individual, and I don’t believe there’s only one way. Each person reacts differently.

    posted on April 14, 2019
  19. art and music

    All of the above!

    posted on April 14, 2019
  20. English

    Do you understand why no one has responded? What poem? What child?

    posted on April 8, 2019
  21. English

    No, not here.

    posted on April 5, 2019
  22. English language

    It seems he doesn’t understand the directions or sets of words any more than I do!

    posted on March 30, 2019
  23. Career guidance

    Go to www.google.co.za and search for “careers math business”

    posted on March 28, 2019
  24. history

    Just Google “Operation torch” and you’ll find out quickly.

    posted on March 26, 2019
  25. Government

    Look for maps with countries’ boundaries inside continents, or states/provinces inside countries, or counties inside a state. Another way is to use google to search for this: U. S. House districts in ________ (Enter a state's name in the blank.)

    posted on March 25, 2019
  26. English

    Please read and reread what you posted. Do you understand why no one except you can answer these questions?

    posted on March 20, 2019
  27. career

    shortage - not enough to go around surplus - more than enough to go around

    posted on March 14, 2019
  28. World studies

    See Similar Questions below.

    posted on March 13, 2019
  29. English

    Yes. A is the only one with a pronoun serving as the subject.

    posted on March 12, 2019
  30. Civic education

    See Similar Questions below.

    posted on March 12, 2019
  31. Health records

    A is correct.

    posted on March 10, 2019
  32. social studies

    Which of those choices has anything to do with art?

    posted on March 5, 2019
  33. Concerned

    Anyone who goes on public websites like Jiskha should not expect privacy! If you don’t want the admins to learn info about you, don’t use the website!

    posted on March 5, 2019
  34. English

    2 is correct, yes.

    posted on March 1, 2019
  35. English

    1-6 are fine. 7 is not.

    posted on March 1, 2019
  36. Ancient Greece, please help! 💝

    Ms. Sue is right. None of these answer choices is very good. The only one that comes close is B -- and that weakness led to Philip of Macedon's ability to start conquering areas and his son Alexander (the Great) to expand on his father's empire. You should

    posted on February 19, 2019
  37. English

    Remove the word "that" and all will be OK.

    posted on January 22, 2019
  38. tech and ela GACA

    What’s GACA? 2 of your answers are right

    posted on January 21, 2019
  39. English

    I’d go with your first choice.

    posted on January 18, 2019
  40. Technology

    No. That’s 2 wrong guesses. Please don’t post about this question again.

    posted on January 14, 2019
  41. Technology

    No. Please check your text or look up the term at webopedia (.) com

    posted on January 14, 2019
  42. Technology

    Then check out the Ed tech post earlier today. Bobpursley’s reply is there.

    posted on January 14, 2019
  43. Technology

    See Similar Questions below.

    posted on January 14, 2019
  44. English

    Right

    posted on January 14, 2019
  45. English

    Have you written your outline yet? Have you written the rough draft of the body of your paper yet? If you haven’t, do those first. You can’t properly introduce something you haven’t written yet. Google ‘how to write an essay’ and then read and

    posted on January 11, 2019
  46. Technology

    uniform resource locator It’s the formal term for ‘web addresses.’

    posted on January 11, 2019
  47. Social Studies

    What countries are considered in southwest Asia? Southeast Asia is a term that’s long been in usage, but southwest ... ?

    posted on January 9, 2019
  48. Literature

    Yes. The word “like” tells you it’s a simile.

    posted on January 4, 2019
  49. History - reposted for Jonah

    What chart?

    posted on December 28, 2018
  50. English

    You might also put your essay through www grammarly com and see what they say.

    posted on December 18, 2018
  51. Social studies

    Wasn’t he the first president? What would a first one do?

    posted on December 14, 2018
  52. English

    I’d give it no point.

    posted on December 10, 2018
  53. English

    All are grammatically correct, but #1 is not used for the same purpose as #2 and #3.

    posted on December 10, 2018
  54. Spanish

    Jiskha has no expert in upper levels of Spanish at present. Sorry.

    posted on December 10, 2018
  55. Social Studies

    Southwest where? Northwest where? When?

    posted on December 7, 2018
  56. English

    Why did you post all this again? Go back and read school lover’s reply earlier. He/She’s right.

    posted on December 7, 2018
  57. Social Studies

    aka Writeacher — Go back and read and reread your text. Augustus was the Roman emperor after Julius Caesar. You should also look up the definition of ‘emperor.’

    posted on December 7, 2018
  58. Social Studies

    Read and study about Greek mythology. Then read and study about Aristotle. What conclusions can you draw?

    posted on November 30, 2018
  59. social studies

    The question says, “in Europe.” Which two countries are in Europe?

    posted on November 30, 2018
  60. Spanish

    Go to Google. Type in conjugate ser Spanish (Or whatever you need). Read, study, memorize. Continue ...

    posted on November 28, 2018
  61. English

    B is correct.

    posted on November 27, 2018
  62. art

    When and where was it painted? What was society like when the painter painted it? In other words, what was the background of the painter and his/her times? Look up the word ‘context’ on Google for more ideas.

    posted on November 15, 2018
  63. english

    Be sure to read your paper out loud to someone who has a printout of your paper. Find and fix any run-ons and fragments. Then run it through www . grammarly . com

    posted on November 12, 2018
  64. English

    The quotation marks are used correctly, but no comma is needed in that sentence.

    posted on November 10, 2018