Popular questions and responses by tk
  1. Calculus

    approximate the change in the lateral surface area(excluding the area of the base of a right circular cone of fixed height of h=6m when its radius decreases from r=11m to r=10.9m S=(pi)r sqrt(r^2+h^2)

    asked on May 5, 2016
  2. math

    if two dice are rolled 360 times, approximately how many times should you expect a sum of 7

    asked on May 10, 2010
  3. English

    Which sentence sets an informal tone? When the room has been cleared, we need to develop an agenda for the meeting. Once the room has been cleared, we can establish the protocol for the meeting. When the room is clear, let's get organized and plan the

    asked on August 22, 2018
  4. English

    Which of these is a good guideline to follow when designing a presentation slide show? Use dark backgrounds Avoid large type Avoid fancy fonts Use only one slide

    asked on August 22, 2018
  5. Pharmacy

    13. How much codeine is needed to prepare 120 ml of a cough syrup with a codeine concentration of 15 mg/ml? A. 8 gm B. 800 gm C. 1.8 gm D. 180 mg

    asked on January 18, 2017
  6. physics

    A 3.0 kg block is sitting at rest at the edge of a cliff. A 400 gram bullet is fired at the block with an initial velocity of 500m/s. The bullet goes through the block and has a speed of 400m/s after it leaves the block. The block lands 50m from the base

    asked on April 26, 2018
  7. Chem

    At equilibrium, the concentrations in this system were found to be [N2]=[O2]=0.200 M and [NO]=0.500 M. N2(g) + 02(g) 2NO(g) If more NO is added, bringing its concentration to 0.800 M, what will the final concentration of NO be after equilibrium is

    asked on March 3, 2013
  8. econ

    my mind is going blank here..can someone chime in and help: If a new breakthrough in manufacturing technology reduces the cost of producing cd players by half, what will happen to the demand for cd players? Thank you for using the Jiskha Homework Help

    asked on March 25, 2007
  9. chemistry

    what is the difference between elements in a group and elements in a period on the periodic table Elements in the same group have similar chemical properties. Element in the same period have properties that change periodically across the table. Check out

    asked on November 7, 2006
  10. science

    is sandstone harder than jade?

    asked on November 5, 2018
  11. physics3

    home / study / science / physics / physics questions and answers / Ed And Annie Are Ice Skating. Ed (55 Kg) And Annie (40kg) Both Wearing Skates Face Each Other ... Your question has been answered Let us know if you got a helpful answer. Rate this answer

    asked on April 26, 2018
  12. physics2

    A ball of mass 2m is traveling EAST with a velocity of 2v. A ball of m is traveling NORTH with a velocity of 3v. The balls stick together (they are both made out of putty). How fast are they going immediately after they stick together? In what direction

    asked on April 26, 2018
  13. Algebra

    Simplify: (2x-3y4)3(x3 + y)0 / (4xy-2)3

    asked on March 8, 2018
  14. Pharmacy

    18. Every medication has a brand name and a generic name. True or False.

    asked on January 18, 2017
  15. Pharmacy

    14. How often should a Clonidine patch be changed? A. Daily B. Every 3 days C. Weekly D. Monthly

    asked on January 18, 2017
  16. Pharmacy

    11. Which of the following may be taken by someone with peptic ulcer disease? A. Motrin B. Naprosyn C. Tylenol D. Mobic

    asked on January 18, 2017
  17. Pharm Math

    10. Which of the following does NOT cause sedation? A. Prazosin B. Buspirone C. Alprazolam D. Sucralfate

    asked on January 18, 2017
  18. Math

    A Verapamil suspension is made from six tablets of 120 mg each. The recipe calls for each to be crushed and mixed with a small amount of water, the qs to a final volume of 60 mls. What is the final concentration? A. 12 mg/ml B. 20 mg/ml C. 10 mg/ml D. 60

    asked on January 18, 2017
  19. analytical chemistry

    At what ph will Al(OH)3 begin to preciptate from a .10 M solution of AlCl3?

    asked on October 27, 2015
  20. analytical chemistry

    150 mL of a solution contiains .00015 M NaI, .0055 M NaC, and .12 M Na3PO4. A solution of .10 M AgNo3 is slowly added. Who precipitates 1st, 2nd, and 3rd? When the last one to precipitate just begins to precipitate, what % of the other 2 anions are still

    asked on October 27, 2015
  21. analytical chemistry

    How many grams of Ca(OH)2 can be dissolved in 550mL of a .0500 M NaOH solution. Ksp - Ca(OH)2 is 5.5 x 10-5

    asked on October 27, 2015
  22. New delhi

    Find molarity of 20%aqous soluion of amino . the density of the solution is 1.4 grams/ml

    asked on July 21, 2015
  23. phy111

    1 The principle of conservation of heat energy states that that when an object is at constant temperature or is in thermal equilibrium, it is losing and gaining heat at equal rates. the heat lost by a hot body is equal to the heat gained by the cold body

    asked on April 5, 2015
  24. Chem

    1. What is the molarity of a copper(II) dihydroxide [Cu(OH)2] solution if 25.25 mL of the solution is titrated to the equivalence point with 36.18 mL of 0.549 M prussic acid [H(CN)]? 2. What volume of a 0.138 M dihydroxyl base solution is needed to

    asked on March 29, 2015
  25. geometry

    a cylindrical soup can has a volume of 335cm^3.find the dimensions(radius r and height h)that minimise the surface area of such a can.

    asked on February 13, 2014
  26. geometry

    elaine and Daniel are building a rectangular greenhouse.they want the are of the floor to be 36metres squared.since the glass walls are expensive,they want to minimise the amount of glass wall they use.they have commissioned you to design a greenhouse

    asked on February 13, 2014
  27. arithmetic

    The first term of a quadratic sequence is 8 and it's fourth is 32. If the second difference of the sequence is 2, find Tn.

    asked on March 21, 2011
  28. Math

    how to multiply amd simplify of -8/63 x 21/32 x -9/42 = Pleas show work or give examples of simular problems

    asked on February 27, 2011
  29. Paralegalism

    A paralegal quits the firm of Johnson & Johnson. When she leaves, she takes client documents she prepared while at the firm. The documents contain confidential client information. The paralegal is showing these documents to potential employers as writing

    asked on September 26, 2010
  30. English - Language study

    I'm doing an assignment on studying the language aspects of children's magazines. I've got my report drafted, and I've received written feedback from my teacher, but I'm unsure on how to justify. Here is what I wrote. How is the language structured? From

    asked on October 23, 2008
  31. Chemistry - Batteries

    Can someone please help me with finding a website which gives me information on the environmental problems involving the disposal of batteries? I've found the little section on section on Wikipedia, but it's sufficient to write a paragraph in my essay.

    asked on October 14, 2008
  32. School Learning Curve

    Can someone explain to me the features of the 'learning curve'. I only just found out that teachers grade people's work against other students in the class, and it's something to do with "scaling", especially in English. I'm just curious on how it works,

    asked on September 19, 2008
  33. Physics - Projectile Motion

    This is going to be hard to explain, but I did an experiment on projectile motion and we had to lauch a marble from 0 degrees to 90 degrees in a 5 degree interval using a projectile launcher with the same velocity each time. We had to investigate the angle

    asked on September 1, 2008
  34. Maths - Reciprocals

    1. Give an example of a quadtratic whose recirpocal has no vertical asymptotes Ans. y = x^2 - 2x + 3 2. Compare the vertex (or turning point) of the quadratic and the corresponding feature of the reciprocal. Write down your observation. What does the

    asked on August 26, 2008
  35. maths reciprocal

    I'm finding difficulty in answering this question. Any help would be appreciated. For the equation, y1= x^-5x+6 and its reciprocal: Discuss what is the consequences for y1 to 1/y1 as x --> +- infinity? Thanks in advance.

    asked on August 24, 2008
  36. Maths - Graphics Calculators

    I need a graphics calculator for my school wok, and I don't have one. Is there a website which I could use one online? or download a graphics calculator program that won't expire?

    asked on August 23, 2008
  37. Maths - Recipricals

    I'm having some torubles understanding these question. Sketch y1 = x-3 and y2 = 1/x-3 on the same set of axis a) What is the relationship between the zero of y1, and vertical asymptote of y2? Does the question mean when y1 = 0?. I know the vertical

    asked on August 23, 2008
  1. English

    thank you

    posted on August 22, 2018
  2. English

    Avoid large type

    posted on August 22, 2018
  3. English

    When the room is clear, let's get organized and plan the meeting.

    posted on August 22, 2018
  4. science


    posted on November 21, 2016
  5. Chemistry

    What is the oxidation numbers for ammonia 2NH3

    posted on December 13, 2015
  6. physics

    3.2 m/s^2

    posted on October 16, 2014
  7. chemistry

    Why did you divide by .65?

    posted on July 31, 2013
  8. Chemistry

    pKb = 8.77 use the Handerson-Hasselbalch equation pOH = pKb + log [C5H5NH+]/ [C5H5N] 1 pOH = 14 - 4.50= 9.50 9.50 - 8.77=0.73 10^0.73 = 5.4 = [C5H5NH+]/ [C5H5N] [C5H5N]/ [C5H5NH+]= 1 / 5.4=0.19

    posted on April 2, 2013
  9. English - Language study

    EDIT: Similary, the calendar is put near the front for quick reference if the reader decides to look at the magazine for upcoming events.

    posted on October 23, 2008
  10. English - Language study

    Would it be correct if I added this onto it? These magazines tend to follow this structure because they are very useful pages of magazines. The contents page is put at the front for quick reference and gives the reader an idea of where the articles are.

    posted on October 23, 2008
  11. Maths - Reciprocals

    Ivé graphed the function, and would it be correct to say that if the vertex was (1,2), the corresponding feature's coordinates will be (1,1/2), the y coordinates will reciprocals of each other.

    posted on August 26, 2008
  12. econ

    If price increases, demand drops. If prices drop, there will be more demand than there is supply, so supply drops.

    posted on August 23, 2008
  13. Maths - Graphics Calculators

    Nevermind, I found a Casio Emulator one, but I'm not sure about the legality, so I won't post it. No thanks to Happyface for his short answer "no".

    posted on August 23, 2008
  14. Maths - Recipricals

    I wrote y2 wrong It's suppost to be y2 = 1/(x-3)

    posted on August 23, 2008
  15. math problem

    wow I'm surprised on how Ann got the 1/2 symbol on here 0_0

    posted on August 23, 2008