Popular questions and responses by AC
  1. Chemistry

    Write a balanced equation for the reaction that occurs in each of the following cases. (Use the lowest possible coefficients. Include states-of-matter under SATP conditions in your answer.) I think have the reactions, but I'm stuck with the states of

    asked on March 11, 2017
  2. ...Physics...

    A jet moving at 500 km/h due east moves into a region where the wind is blowing at 120 km/h in a direction 30 degrees north of eat. What is the new velocity and the direction of the aircraft relative to the ground? I am completely lost on this question...

    asked on October 7, 2007
  3. Stats

    Twenty-five percent of all deaths (all ages) are caused by diseases of the heart. Ischemic heart disease accounts for 16.4% of all deaths and heart failure for 2.3%. Choose one death at random. What is the probability that it is from ischemic heart disease

    asked on October 25, 2017
  4. Math

    Makoto's lacrosse practice last 1 3/4 hours. This week he attended all of the practice on Monday and Wednesday, but he had to leave halfway through practice on Friday. How many hours did Makoto's spend at lacrosse practice this week? 1 3/4 + 1 3/4 +1 3/4.

    asked on April 7, 2015
  5. Math Homework

    Sheila's first jump was 3 yards 2 feet 8 inches her second was 2 yards 1 foot 10 inches how much longer was her first jump? express your answer in inches I'm having a hard time setting this up

    asked on April 10, 2015
  6. Physics

    A track star in the long jump goes into the jump at 12 m/s and launches herself at 20 degrees above the horizontal. How long is she in the air before returning to Earth? (g= 9.81 m/s squared) I tried using some formulas but I'm using all of the wrong

    asked on October 7, 2007
  7. Math

    As of the 2012 Summer Olympics, the world record for women's long jump is 24 feet, 8 inches. How much longer is the world record than Sheila's first jump? Express your answer in yards. Sheila first jump measured 3 yards, 2 feet, 8 inches. Do I convert to

    asked on April 10, 2015
  8. Statistics

    Recall that very satisfied customers give the XYZ- Box video game system a rating that is at least 42. Suppose that the manufacturer of the XYZ- Box wishes to use the random sample of 65 satisfaction ratings to provide evidence supporting the claim that

    asked on September 26, 2011
  9. Coulomb's Law

    Two charges attract each other with a force of 16N. What will be the new force if the distance between them is reduced to 1/2 of its original value?

    asked on January 26, 2016
  10. Homework

    Mary Ann poured 250 milliliters of fruit punch into 13 glasses. How many liters of fruit punch did she pour? a. 3.25 Liters b. 32.5 liters c. 325 liters d. 3,250!liters I think it's (a. 3.25), because 250 milliliters converted is 0.25 and 0.25 x 13 = 3.25

    asked on April 10, 2015
  11. Physics

    A droplet of ink in an industrial ink jet printer carries a charge of 1.6 x 10 to the power of -10C and is deflected onto paper by a force of 3.2 x 10 to the power of -4N. What is the strength of the electric field to produce this force?

    asked on January 12, 2010
  12. Math

    Mr Graham buys clay for the art class in 25-pound blocks. He gave out a total of 15 pounds of clay to a class of students for a project. Each student got 1/2 pound of clay. How many students are in the class?

    asked on March 24, 2019
  13. Math

    As of the 2012 Summer Olympics, the world record for women's long jump is 24 feet, 8 inches. How much longer is the world record than Sheila's first jump? Express your answer in yards. Sheila first jump measured 3 yards, 2 feet, 8 inches. Do I convert to

    asked on April 11, 2015
  14. Homework

    Laing enlarged a photograph to 1 3/4 times it's original size. The original photograph was 5 inches wide. What was the width of the enlarged photograph?. A. 5 3/20 B. 5 3/4 C. 6 3/4 D. 8 3/4 I think it's D I multiplied 5/1 x 7/4= 35/4 = 8 3/4

    asked on April 10, 2015
  15. Math help

    Which expression represents the quotient 3.36/6. A. (3/6)+(0.03/6)+(0.6/6) B. (3/6)+(0.30/6)+(0.06/6) C. (6/6)+(0.03/6)+(0.6/6) D. (6/6)+(0.30/6)+(0.03/6) I think it's B but not sure of how I really got the answer anymore.

    asked on April 8, 2015
  16. Physics

    A stoane propelled from a catapult with a speed of 60ms-1 attains a height of 120m. Calculate the time of flight, the angle of projection, the range

    asked on February 15, 2020
  17. Math

    Jamal found 1/3 gallon of milk in the kitchen. He poured it into 5 equal size cups. What fraction of a gallon of milk is in each cup? 1/3 of 5 3 x 5 = 15 1/15

    asked on April 7, 2015
  18. social studies

    what impact did the establishment of french and dutch colonies in north america have on native americans?

    asked on September 19, 2009
  19. Calculus

    Solve. (A) 2sin^2 x = 1 (B) tan^2 x = 3

    asked on September 24, 2007
  20. CALCULUS - need help!

    Determine the limit of the trigonometric function (if it exists). 1. lim sin x / 5x (x -> 0) 2. lim tan^2x / x (x ->0) 3. lim cos x tan x / x (x -> 0)

    asked on October 1, 2007
  21. ssc 101

    What is subculture

    asked on December 6, 2011
  22. physics- pressure/gas

    Suppose 2500 J of heat are added to 4.1 mol of argon gas at a constant pressure of 120 kPa. (Assume that the argon can be treated as an ideal monatomic gas.) Find the change in internal energy. I started using U = N (3/2 kB T). But I have too many

    asked on June 21, 2007
  23. algebra

    Please help solve with elimination method. -6x+6y=18 7x+5y=-9

    asked on October 29, 2014
  24. algebra

    a 13- foot ladder is placed so that it reaches to a point on the wall that is 2 feet higher than twice the distance from the base of the wall to the base of the ladder. How high does the ladder reach?

    asked on May 7, 2012
  25. Pre cal

    find the value of cotè given secè=5/4 and cscè

    asked on December 2, 2010
  26. Math

    Draw a parallelogram with an area of 48 sq cm with a decimal factor oft the length ,width or both

    asked on February 23, 2015
  27. Math

    Suppose a planet has a radius of 5,000 km. Starting at the point on its surface at 0 degrees longitude and 0 degrees latitude,find the distance to the point on its surface at 30 degrees longitude and 60 degrees latitude.

    asked on November 4, 2015
  28. Calculus

    find the absolute extrema for f(x)= (5-x) with a closed interval of -1,2

    asked on December 17, 2014
  1. Physics

    F_drag = 1/2 P V^2 C_DA = 0.5*0.002377*59^2*1555 = 6433 lbf W = 3922000+150000+4451=4076451 lbs 7% grade = 4 degree F_rolling= W*cos theta*Crr = 4076451*cos4*0.015=60998 lbf F_weight=W *sin theta = 4076451*sin4=284359 lbf F_sum = 6433+60998+284359=351790

    posted on November 27, 2019
  2. History


    posted on August 20, 2019
  3. math please help!!!

    The answer is 228. This is because of 48 *4=192. Then 192 + 36= 228. This is the correct answer for the surface area of the pyramid.

    posted on May 28, 2019
  4. Math


    posted on March 24, 2019
  5. Math

    what are the others

    posted on January 14, 2019
  6. English

    is this right

    posted on December 12, 2018
  7. Math

    he right ps helper is

    posted on November 8, 2018
  8. Art

    hey are the answers right

    posted on October 16, 2018
  9. Science


    posted on October 9, 2018
  10. math

    What’s the answer

    posted on November 14, 2017
  11. spelling

    hi hi hi hi hi hi hi hi

    posted on August 16, 2017
  12. Chemistry

    Thanks scott! Just a quick correction, the reaction in part C is actually 2Na + O_2 --> Na_2O_2

    posted on March 11, 2017
  13. Math

    17 bj n lm mnh j mj nj mjk nj

    posted on September 27, 2016
  14. chemistry

    You in Davis' class?

    posted on April 27, 2016
  15. math

    Name 300 in two different ways

    posted on September 10, 2015
  16. Music

    i have the same test

    posted on December 8, 2012
  17. chem lab (webwork)

    the answer is 7 for HCL and 8.72 for HC2H3O2

    posted on May 1, 2011
  18. Marketing

    To compete more successfully with its many competitors offering packaged cookies, Famous Amos added its own line of extra chunky premium cookies. This seems to be an effort at: A. Market development. B. Combination. C. Market penetration. D. Product

    posted on September 11, 2010
  19. Pigskin geography

    #16 what is the host team which is in a state with two peninsula?

    posted on November 21, 2007
  20. Physics

    Thanks! ^^

    posted on October 7, 2007