1. Physics. Please help!!

    Distruive interference? Unless you put C in the line between A and B, this the asnwer is at infinity. Now on the line between A and B, the distance from A to C has to be an odd multiple of halfwavelength greater than C to B. Now, the distance between the

    asked by papito on May 4, 2007
  2. adult education

    How do you know if a value is a solution for an inequality? How is this different from determining if a value is a solution to an equation? o If you replace the equal sign of an equation with an inequality sign, is there ever a time when the same value

    asked by cristale on November 28, 2009
  3. Pre-Algebra help!

    Tom buys $22.00 plus 7% sales tax. His cousin buys a shirt for $18.00 plus 4% sales tax. a. How much do Tom and his cousin pay for the shirts? Show your work b. Who spent more on tax? I don't know what I'm suppose to do here. Am I suppose to multiply the

    asked by DerpyPegasus33 on December 10, 2014
  4. Trig - check my answers plz!

    1. (P -15/17, -8/17) is found on the unit circle. Find sinΘ and cosΘ Work: P= (-15/17, -8/17) cosΘ = a value P = (a,b) sinΘ = b value Answer: cosΘ = -15/17 sinΘ = -8/17 2. Should the triangle be solved beginning with Law of Sines or Law of Cosines.

    asked by Piper on February 3, 2009
  5. chemistry

    A) A solution was prepared by dissolving 1.113 g of MgCl2 into water and made up to 50.0 ml, calculate the molar concentration of the solution. B) A 250.0 ml of 0.50 M solution of Na3PO2 solution was prepared by diluting 2.5 M of stock solution. Calculate

    asked by henry39 on December 24, 2016
  6. Ethics

    consider racial imbalances in education, the economy, family life, housing, criminal justices, health care, and politics. Of these societal challenges facing modern African American, which do you think are most difficult to overcome, and why?

    asked by Anonymous on January 16, 2007
  7. math

    A water system of 2 in.(inside diameter) pipe, having a length of 1/4 mile, is to be flushed with a volume of water equal to twice that contained in the system. how much water (gallons) must be flushed through the system? (note: one cubic foot=7.481gal.)

    asked by Wilfredo on February 11, 2013
  8. pre-calc

    Solve: cos(2x-180) - sin(x-90)=0 my work: cos2xcos180 + sin2xsin180= sinxcos90 - sin90cosx -cos2x - sin2x= cosx -cos^2x + sin^2x -2sinxcosx=cosx I'm stuck here. I tried subtracting cosx from both sides and making sin^2x into 1- cos^2x, but I still can't

    asked by Jess on February 7, 2007
  9. chemistry

    The triprotic acid H3A has ionization constants of Ka1 = 9.9× 10–2, Ka2 = 2.7× 10–8, and Ka3 = 5.9× 10–11. a). Calculate the following values for a 0.0570 M solution of NaH2A H+ ?? [H2A^-/H3A]?? b). Calculate the following values for a 0.0570 M

    asked by Laura on March 28, 2013
  10. Chemistry

    A student makes a solution by dissolving 55.8 grams of potassium hydroxide in 875.0 grams of water. The resulting solution has a density of 1.07 grams per milliliter. 1. What is the volume of this solution? 2. Calculate the % concentration of this

    asked by Paul on January 31, 2011
  11. Reading

    Copernicus was a mathematician and astronomer during the Renaissance. He was the first person to argue that the Sun is at the center of the solar system, not the Earth. The appearances of objects in the heavens have from the earliest historic ages filled

    asked by Yissele on April 30, 2019
  12. physics help plz thanks

    An arrangement of two pulleys, as shown in the figure, is used to lift a 49.6-kg mass a distance of 3.70 m above the starting point. Assume the pulleys and rope are ideal and that all rope sections are essentially vertical. (a) What is the mechanical

    asked by Akbar on June 2, 2012
  13. Physics

    An electric power plant that would make use of the temperature gradient in the ocean has been proposed. The system is to operate between 20.0°C (surface water temperature) and 5.00°C (water temperature at a depth of about 1 km). The first question asks

    asked by Z32 on February 26, 2011
  14. physical science

    In raising a 5000-N piano with a pulley system, the movers note that, for every 2m of rope pulled down, the piano rises 0.3m. Ideally, show that the force required to lift the piano is 500-N.

    asked by erin on February 28, 2012
  15. Chemistry

    What is the volume, in milliliters, required to prepare a. 20.0 mL of a 0.250 M KNO3 solution using a 6.00 M KNO3 solution b. 25.0 mL of a 2.50 M H2SO4 solution using a 12.0 M H2SO4 solution c. 0.500 L of a 1.50 M NH4Cl solution using a 10.00 M NH4Cl

    asked by Anonymous on April 6, 2015
  16. Chem

    The mass of a beaker is 5.333g. After 5.00 mL of a concentrated hydrochloric acid solution is pipetted into the beaker, the combined mass of the beaker and the hydrochloric acid sample is 11.229 g. From the data, what is the measured density of the

    asked by Amy on September 1, 2015
  17. chemistry need help plzzz tomorrow is a TEST!!!

    phosphoric acid is the active ingredient in many commercial rust-removing solution.calculate the volume of concentrated phosphoric acid (14.6 mol/L)that must be diluted to prepare 500mL of a 1.25 mol/L solution. how can i calulate the volume cocentration

    asked by TARA on December 9, 2010
  18. Math

    The formula for the velocity of an object is , where v is the velocity of the object, d is the distance traveled, and t is the time elapsed while that distance is traveled. v=d/t distance = speed times time so time in seconds = distance in meters / speed

    asked by Dani on February 18, 2014
  19. Ed white

    solve this word problem suppose you have a job mowing lawns that pays $12 per hour you also have a job at a clothing store that pays $10 per hour you need to earn at least $350 per week but you can work no more than 35 hours per week you must work a

    asked by Anonymous on December 9, 2015
  20. Algebra!

    Can someone help me with these problems so i can do the rest of my textbook work on my own plz? What is the value of n so that the expression x^2+11x+n is a perfect square trinomial? (1 point) What is a solution of x^2+6x=-5? (1 point) What is the solution

    asked by Gabby on March 24, 2014
  21. ~CHEM~

    If I had an equilibrium of CH3CO2(aq) + H(aq) CH3CO2H(aq) and the applied stress was HCl and NaOH what observations should I expect and what direction would the equliibrium shift? Same goes to this question equilibrium:Fe(aq) + SCN(aq) FeSCN(aq) the

    asked by Jason on May 16, 2007
  22. Administration of Criminal Justice

    You are the captain in the police department’s special response unit. Your unit normally handles many special projects for the chief of police, from providing officers for parades and demonstrations to targeting an area in which there is a serious

    asked by Patricia on August 31, 2011
  23. Physics Work and Energy, Momentum

    Let g be the acceleration due to gravity at the surface of a planet of radius R. Which of the following is a dimensionally correct formula for the minimum kinetic energy K that a projectile of mass m must have at the planet's surface if the projectile is

    asked by Kelly on May 13, 2007
  24. precalculus

    solve the inequality algebraically. write the solution in interval notation. the absolute value of x-2/3 is less than or equal to 4

    asked by jase on November 25, 2011
  25. Calculus

    Solve the separable differential equation: dy/dt=4y^6 and find the particular solution satisfying the initial condition y(0)=-3 y(t)=?

    asked by Carly on July 29, 2011
  26. Quick Math

    Solve the following equation 5(z-4)-z=4z-20 4 -4 Infinitely many solutions No solution I had found that the answer was 0=0, but what does that mean? I’m confused. Thank you in advance.

    asked by Anonymous on September 20, 2018
  27. algebra

    solve the equation if it an identity(all real numbers) or a contradiction(no solution) so state 5x+6+6x=10x+6+y

    asked by babygirl on September 5, 2011
  28. chemistry

    how would you solve the mass of sucrose, C12H22O11, that is needed to make 550ml of a 0.25M solution?

    asked by maggie on April 14, 2013
  29. college math

    Solve. write the solution set using interval notation 9-(7x-9)is greater than or equal to sign -8(x+1)-8

    asked by Anonymous on September 19, 2010
  30. math

    solve inequality. write the solution set in interval notation 7x+6 greater than or equal to -(x-6)

    asked by jessica on January 17, 2009
  31. algebra

    Solve. Where appropriate, include approximations to the nearest thousandth. If no solution exists, state this 3^(2x + 1) = 243

    asked by allice on September 11, 2010
  32. algebra

    Solve. Where appropriate, include approximations to the nearest thousandth. If no solution exists, state this. log[5] (5x - 1) = 1

    asked by mar on September 10, 2010
  33. math

    Solve using the addition and multiplication principles. 6minus−6x less than or equals¡Ü 4minus−5x what is the solution set

    asked by art institute on March 11, 2016
  34. Math

    solve using the multiplication principle. don't forget to perform a check. 12x=-96 the solution is x=

    asked by Tom on September 27, 2009
  35. trig

    SOlve over (2,pie) and find the general solution in radians. 2sin3x = square root of 2

    asked by Leigh on March 12, 2012
  36. math

    solve the polynomial ineqaality. express the solution set in interval notation. x^3+x^2+64x+64>0

    asked by Kelli on January 4, 2013
  37. algebra

    solve the equation and state if it an identity ( all real numbers) or a contradiction(no solution) 5x+6+6x=10x+6+y

    asked by babygirl on September 5, 2011
  38. Math

    Use the Law of Sines to solve triangle ABC when a=1.43,b=4.21,and A=30.4 degrees. If no solution exists, rite none.

    asked by Sally on June 9, 2009
  39. Math

    Hi! Can someone help me with these? I just learned about them yesterday but I'm really confused. All my teacher wants me to do is solve each equation and that's all the directions she gave. Thanks so much! 1.) 3cot^2 x-1=0 Location on Unit Circle: Period:

    asked by Stephanie on January 24, 2015
  40. Chemistry 30

    predict the products of the reaction between acidified H2O2 with potassium permanganate solution H2O2 (l)  KMnO4 (aq) + 2H2O (l) + 6H+ (aq) + 6e- H2O2 (l) + 2H2O (l)  KMnO4 (aq) + + 6H+ (aq) + 6e- is this right? I'm confused. May I please get help?

    asked by Sarah on October 25, 2018
  41. maths(urgent)thanks.

    a parabola with turning point at (1,-2) and passing through the origin.find the equation of this parabola. how do i do this? can someone please show me how to solve it step by step?thanks! You know that at x = 0 the function is zero. Because the turning

    asked by Emma on May 30, 2007
  42. English

    Why does Jane Goodall describe the eyes of the chimpanzees using the words “dull and blank”? A) to show they have no feelings B) to show they are not smart creatures C) to contrast them with doctors D) to show how sad they are Is it A?

    asked by Heather on July 6, 2019
  43. math

    tom takes 3days to do a piece of work while jerry takes only one day for the same. together, they both can finish the job in 15 days. in how many days tom will finish the work? solution please

    asked by lucky on December 16, 2015
  44. science-Help!

    What does it mean in the scientific method that the second step is research? I need to write up the 5 steps of scientific method explaining my experiment-how do i do research?

    asked by Jonathan on March 11, 2012
  45. physics

    An object of mass 2.0 kg starts from rest at the top of a frictionless curved ramp. At the bottom, it collides with and sticks to another 2.0-kg mass object. Together the objects then cross a small rough section where there is friction before leaving the

    asked by Anonymous on December 3, 2014
  46. Chemistry PLEASE HELP ME

    Strictly speaking, NO system can be completely closed - for example, hot liquid in the best thermos eventually cools down - but for most purposes a system can effectively be “closed”. How would you create a system which is more or less closed with

    asked by Student12 on June 8, 2017
  47. Chemistry

    Strictly speaking, NO system can be completely closed - for example, hot liquid in the best thermos eventually cools down - but for most purposes a system can effectively be “closed”. How would you create a system which is more or less closed with

    asked by Student12 on June 8, 2017
  48. chemistry

    A 43 mL sample of a solution of sulfuric acid is neutralized by 24 mL of a 0.053 M sodium hydroxide solution. Calculate the molarity of the sulfuric acid solution. Answer in units of mol/L. Here is my work so far. I thought I have successfully solved the

    asked by Big Boy on April 4, 2019
  49. Government

    Which is NOT a factor that reinforces America's two-party system? 1.)Broad ideological consensus limits the appeal of radical parties. 2.)The winner-take-all system makes it harder for third parties to gain popularity. 3.)The two-party system was preferred

    asked by Rebecca on November 14, 2013
  50. Chemistry(Please help, thank you!)

    A study of the system, H2(g) + I2(g) == 2 HI(g), was carried out. Kc = 54.9 at 699.0 K (Kelvin) for this reaction. A system was charged with 2.50 moles of HI in a 5.00 liter vessel as the only component initially. The system was brought up to 699.0 K and

    asked by Hannah on March 14, 2012
  51. chemistry

    1. A solution of sodium oxalate has a pH of 7.82. The [OH-] in mol/L must be which of the following: a) 6.18 b) 1.5 x 10-8 c) 6.6 x 10-7 d) 7.82 e) -7.82 2. When 0.93 mol of O2 and 0.56 mol of NH3 are mixed together and allowed to come to equilibrium

    asked by tt on August 3, 2011
  52. Math help

    How do you solve this please show with steps I'm very lost, I tried to put it in square root and I tried to multiply my approaches do not add up to the answer which is supposed to be 9/125... (3^1/3 • 5^ -1/2)^6

    asked by Anonymous on October 28, 2017
  53. math

    Question: Use logical equivalnces to show that the propositions !p -> (q->r) and q -> (p v r) are logically equivalent. I AM SO DAMN CONFUSED! I tried to solve !p -> (q -> r) first and I only got to !p -> (!q v r) I cant see any other rule that would apply

    asked by rick on October 5, 2010
  54. Math

    I need help on my math question. can someone please explain the process? You have $5 for lunch. You bought a turkey sandwich for $2.25. Write and solve an inequality to show how much more you can spend.

    asked by jelly bean on May 20, 2014
  55. Calculus

    Find f(x) so that it satisfies: f'(x)=1/sqrt(x) and f(4)=2. Please show steps I keep getting stuck at the anti derivative and the constant doesn't solve it so I don't know where I went wrong.

    asked by Rene on April 16, 2013
  56. Calculus

    For the function f(x) = x/(3x+1) find the equation of the line which is tangent to the curve f(x) at x=2. Solve analytically (an exact answer is required) Please show steps. Thanks.

    asked by James on May 10, 2011
  57. Math

    Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. Find the function rule. [x| -2| -1| 0| 1| 2] [y| 9| 4| -1| -6| -11] PLEASE HELP!!! I REALLY NEED THIS GRADE!!!

    asked by Guy.Man.Dude on February 8, 2019
  58. MATH HELP PLEASE!!!

    How do you solve this please show with steps I'm very lost, I tried to put it in square root and I tried to multiply my approaches do not add up to the answer which is supposed to be 9/125... (3^1/3 • 5^ -1/2)^6

    asked by Name on October 28, 2017
  59. Math/physics

    An 6 x 8 wood column is 17 feet tall and is loaded with 40 Kips. Will it buckle (K = 1.0)? How do I set this up and solve? Please show steps. I am confused and do not know how to start. Thank you.

    asked by sejul on September 29, 2013
  60. Trigonometry

    over which of the following domains is f(x) = csc(0.1x + 1.2) defined at all points and invertible? x = [0,10] x = [10,20] x = [20,30] x = [30,40] Can someone please explain how to solve this to me and show me all the steps rather than simply giving me the

    asked by Nina on April 19, 2017
  61. Discrete math

    Question: Use logical equivalnces to show that the propositions !p -> (q->r) and q -> (p v r) are logically equivalent. I AM SO DAMN CONFUSED! I tried to solve !p -> (q -> r) first and I only got to !p -> (!q v r) I cant see any other rule that would apply

    asked by rick on October 4, 2010
  62. math

    Suppose you are in the market for a new home and are interested in a new housing community under construction in a different city. a)The sales representative informs you that there are two floor plans still available, and that there are a total of 56

    asked by Kammy on November 6, 2009
  63. math

    Suppose you are in the market for a new home and are interested in a new housing community under construction in a different city. a)The sales representative informs you that there are two floor plans still available, and that there are a total of 56

    asked by Kammy on November 6, 2009
  64. science

    i just want to know if my answeres are correct! A.The problem = the main issue or subject being in vestigated in the study B.a method=a procedure, process, or approach used to investigate the problem C.a finding=a proven result obtained as a part of the

    asked by kayci on May 12, 2010
  65. science someone please check my answers

    i just want to know if my answeres are correct! A.The problem = the main issue or subject being in vestigated in the study B.a method=a procedure, process, or approach used to investigate the problem C.a finding=a proven result obtained as a part of the

    asked by kayci on May 12, 2010
  66. Physics

    A block of mass 50 kg is pulled on a frictionless floor by F=210N directed to 30angle horizontally, If the block moves 3m, find work done? a. 115 √2J b. 315 √3J Answer is B 315 √3J , my question is how to solve it in this way i mean, i solved it like

    asked by Shahab Mirza on October 3, 2014
  67. Algebra help

    Solve Rational Inequalities x^2-x-2/x^2+5x+6 2 ...let's choose 3. If we choose 3 for x, the result will be positive and not less than 0. Three of the tests work. If you are familiar with interval notation, the solution set can be written this way:

    asked by Dee Williams on November 7, 2006
  68. Math

    Let p and q be the roots of the polynomial mx^2 + x(2 - m) + 3. Let m1 and m2 be two values of m satisfying p/q + q/p = 2/3. Determine numerical value of m1/ (m2)^2 + m2/(m1)^2. Please work the complete solution.

    asked by Watson on April 23, 2013
  69. algebra

    Write the equation for the following relation. Include all of your work in your final answer. Submit your solution. P = {(x, y): (1, 0), (2, 4), (3, 8), (4, 12),

    asked by Anonymous on September 5, 2014
  70. Math

    Find the following indefinite integral ∫ (x^2 -8)/ (x^2 -16) dx My work ∫ (x^2 - 8) * ∫ (1/(x^2 - 16) ∫ (x^2 - 8) = [(x^3)/(3) - 8x)] + C ∫ (1/(x^2 - 16) = ∫ [(-1/8)/(x+4)] + [(1/8)/(x-4)] = (-1/8)*ln|(x+4)| +(1/8)*|(x-4)| + C So I get this,

    asked by Georges on April 21, 2019
  71. Math

    Let p and q be the roots of the polynomial mx^2 + x(2 - m) + 3. Let m1 and m2 be two values of m satisfying p/q + q/p = 2/3. Determine numerical value of m1/(m2)^2 + m2/(m1)^2. Please work the complete solution.

    asked by Watson on April 23, 2013
  72. Math

    Let R1 and R2 be the remainders when polynomials x^3 + 2x^2 - 5ax - 7 and x^ 3 + ax^2 - 12 x + 6 are divided by ( x + 1 ) and ( x - 2 ) respectively. If 2R1 + R2 = 6, find a. Please work the complete solution.

    asked by Steve on April 14, 2013
  73. Technology

    Can you pleas check my answers? 1. Which of the following is a list of input devices? A. printer, mouse, speakers (answer) B. RAM, monitor, printer C. microphone, mouse, scanner D. CPU, monitor operation system 2. Which type of software coordinates the

    asked by O~o on January 11, 2019
  74. pre-calc

    A statement Sn about the positive integers is given. Write statements S1, S2, and S3, and show that each of these statements is true. Show your work. Sn: 1^2 + 4^2 + 7^2 + . . . + (3n - 2)^2 = (n(〖6n〗^2-3n-1))/2

    asked by Ciara on April 16, 2015
  75. SS

    Why did South Carolinians support the concept of popular sovereignty? A.it advanced the plantation system in Kansas B.it allowed slaves to be taken into any territory** C.it showed that compromise was a peaceful way to solve problems D.it was a plan

    asked by jack on January 28, 2019
  76. calculus

    the telephone company is planning to introduce two new types of executive communications systems that it hopes to sell to its largest commercial customers. It is estimated that if the first type of system is priced at x hundred dollars per system and the

    asked by aj on April 23, 2013
  77. Math

    Alice, Bob, and Charlie are three siblings with ages a, b, and c respectively. Their combine age is 18 years. Charlie is older than Bob. Alice's age is equal to twice the difference between Bob's and Charlie's ages. Bob's age is equal the average of

    asked by Jim on September 22, 2014
  78. math word problem

    the boiling point of water 212 degree f. this is 180 degree more than its freezing point. define the variable. then write and solve an equation to find the frezzing point of water. show your work. the variable would be: d could be the variable. f + 180 =

    asked by marko on October 15, 2011
  79. Calculus

    Please look at my work below: Solve the initial-value problem. y'' + 4y' + 6y = 0 , y(0) = 2 , y'(0) = 4 r^2+4r+6=0, r=(16 +/- Sqrt(4^2-4(1)(6)))/2(1) r=(16 +/- Sqrt(-8)) r=8 +/- Sqrt(2)*i, alpha=8, Beta=Sqrt(2) y(0)=2, e^(8*0)*(c1*cos(0)+c2*sin(0))=c2=2

    asked by COFFEE on July 10, 2007
  80. Anatomy and Physiology

    Hello! ____ 36. What system works with the cardiovascular system to regulate temperature in the body? (1 point) a) nervous b) respiratory c) immune d) integumentary My Answer: D I'm confused here, due to the fact that both the nervous and integumentary

    asked by Da Fash on November 9, 2017
  81. Calculus

    Find the instantaneous rate of change of V with respect to r when r=100 V(r)=.2r^2-20r+600 using limit definition. Please show work for understanding, thank you :)

    asked by Tori on February 14, 2013
  82. Chemistry

    Identify the atom that increases in oxidation number in the following redox reaction. 2MnO2 + 2K2CO3 + O2 2KMnO4 + 2CO2 *A.) Mn B.) O C.) K D.) C Please show work Thank you.

    asked by Jade on March 21, 2013
  83. Physics

    If a freely falling rock were equipped with a speedometer, by how much would its speed readings increase with each second IF it were on a planet where g = 20 m/s2? Show all work leading to your answer. g=20 m/s^2 20 m/s V=gt S=g( T ^2) / 2 Is this right ?

    asked by Ciara on April 5, 2015
  84. math

    I really do not know how to get the answers to these, can you show me on a table form? Thanks 155km to m 2.56Ml to l 155um to mm 1,850nm to mm 1.68Gm to Mm 165pm to nm 2,750u to M 1.5kg to mg I would like to know how to work these out. Thank you

    asked by jo on October 12, 2009
  85. geometry

    The perimeterof a square is 32 inches. Find the lenght of its diagonal. the answers should be in simplest form. make a sketch and show work.

    asked by rob on March 21, 2012
  86. statistics

    The following data lists the average monthly snowfall for January in 15 cities around the US: 26 6 5 45 44 10 39 33 15 33 11 36 36 4 32 Find the mean, variance, and standard deviation. Please show all of your work.

    asked by Anonymous on January 30, 2012
  87. chem

    How many moles of base are needed to neutralize 2 mol of acid for HNO3 + KOH - KNO3 + H2O?. Can u show your work please:) Thanks a bunch

    asked by Stacey on May 4, 2010
  88. Physics

    what is the moment of interia of a solid cylinder of radius R=0.0950m thickness t=0.015m total mass M=3.565kg? show your work

    asked by Arthur on October 13, 2011
  89. Math

    Show all work If $7,500 is invested in a savings account earning 5% interest compunded quarterly, how many years will pass until there is $20,000?

    asked by Liz on December 1, 2011
  90. statistics

    The following data lists the average monthly snowfall for January in 15 cities around the US: 38 0 47 32 42 31 40 47 35 43 36 17 36 8 1 Find the mean, variance, and standard deviation. Please show all of your work.

    asked by Huffette on November 18, 2012
  91. Physics

    If a person weighs 500 N on Earth, what would she weigh on Jupiter, where the acceleration due to gravity is 26 m/s2? Show all work leading to your answer.

    asked by Ciara on April 5, 2015
  92. algebra

    Abby spent 5 1/2 minutes solving 5 math problems on her homework. How much time did she spend on each problem, on average? show your work.

    asked by syram on March 6, 2013
  93. Algebra

    .428571428571 with the digits 4,2,8,5,7,1 repeating indefinitely in that order. What digit is in the 200th place. To the right of the decimal point? Is the answer 8? Please show your work. Thanks:)

    asked by Anonymous on September 1, 2012
  94. Statistics

    Calculate the mean and standard deviation of the probability distribution created by rolling a dice. Either show work or explain how your answer was calculated.

    asked by Peter on October 9, 2011
  95. English

    Write a well organized essay in which you show how the characters relationship to the past contributes to the meaning of the work as a whole. My Question: What is it asking for?? Explain in Details Please

    asked by Rena on March 1, 2017
  96. Calculus

    Find the volume of the solid generated by revolving the region bounded by the graphs of the equations about the x-axis. y=ln x, y=0, x=1, x=3 Please show the steps in your work, thanks! :)

    asked by Pan on March 29, 2008
  97. chemistry

    joules needed to melt a 525 g ice cube at 0 degree C and to warm the liquid to 15 degrees C (two steps please show work)

    asked by rachel on September 16, 2012
  98. Mathematics

    Express the following limit as a definite integral. Show all the steps in your work. Lim as n approaches infinity of (3/n * (n)sigma(I=1) * (1+(3i/n))/(9+(1+(3i/n)^2)). I am utterly lost!

    asked by Liam on November 27, 2015
  99. chemistry

    if 2 sealed containers, one containing carbon dioxide and the other containing methane were opened at the same time which gas would have the fastest rate of effusion? show work.

    asked by john on March 7, 2011
  100. Physics

    For a given initial projectile speed Vo, calculate what launch angle A gives the longest range R. Show your work, don't just quote a number.

    asked by Tim on February 17, 2014

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