W

Newest questions and responses by W
  1. science weather

    The hurricane center is MOST likely to be near location ___________ on Monday afternoon. A) I B) II C) III D) IV

    asked on February 11, 2019
  2. science

    Describe the change in phase and temperature as water moves from the oceans to the atmosphere and then returns to Earth again as rain. A) evaporation: temperature increases; condensation: temperature decreases; precipitation (rain): temperature decreases.

    asked on February 11, 2019
  3. Physics

    Blood from an animal is placed in a bottle 1.3 m above a 3.6 cm long needle, of inside diameter 0.35 mm , from which it flows at a rate of 2.1 cm3/min . What is the viscosity of this blood? Assume ρblood=1.05×103kg/m3.

    asked on March 7, 2017
  4. physics

    Sam and Sue are running side by side in a marathon. They are running at a constant velocity of 10 km h . What is Sue's relative velocity to Sam? A) 0 km/h B) 5 km/h C) 10 km/h D) 20 km/h

    asked on October 26, 2016
  5. Statistics

    In a sample of 20 men, the mean height was 178 cm. In a sample of 30 women, the mean height was 164 cm. What was the mean height for both groups put together? The answer I got by adding the two means and dividing them by 2 is 171 but it is wrong, it must

    asked on September 20, 2016
  6. ADHD

    Which of the following is true of the cause and treatment of ADHD ? A. Drug therapy alone is not very effective in treating hyperactivity b. academic and social skills are best treated with a combination of medication and other treatment. C. Usually caused

    asked on October 2, 2015
  7. Child development

    Refers to breaking down complex skills into their component parts? A. Differentiation b. integration c. Motor skills d. Locomotion I am think b but am not sure if it right.

    asked on October 2, 2015
  8. Physics

    Sam, whose mass is 71.0 kg , takes off down a 51.0 m high, 11.0 ∘ slope on his jet-powered skis. The skis have a thrust of 210 N . Sam's speed at the bottom is 41.0 m/s .

    asked on October 1, 2015
  9. Statistics

    I have been working on the following homework problem: Consider Homer and Bart's consumption of potato chips and donuts. Suppose that Marge is in the room 30% of the time that Bart is eating chips and 40% of the time that Bart is eating donuts. Similarly,

    asked on April 23, 2015
  10. M

    Small muscle usually occurs before large muscle development think false

    asked on November 20, 2014
  11. School

    Daily activity can boost academic performance true or false I am think t

    asked on November 20, 2014
  12. calculus

    The half-life of Radium-223 is 11.43 days. If a sample has a mass of 400 mg, find the mass (in mg) that remains after 6 days

    asked on October 14, 2014
  13. phisecs

    water is moving with a speed of 5 m/s through a pip with a cross-sectional area of 4cm^2 . the water gradual descends 10 m as the pipe cross-sectional area increases 8cm^2 . if the pressure at the upper level is 1.5*10^5 , the pressure at the lower level

    asked on April 22, 2014
  14. phisecs

    .: A 5.0 kg block is moving with constant velocity down a rough incline plane. The coefficients of static and kinetic friction between the block and the incline are 0.25 and 0.20, respectively. What is the inclination angle of the incline plane?

    asked on March 24, 2014
  15. phisecs

    `filling the blanks: sun_________________ than moon. earth is__________________mercury.''.

    asked on February 21, 2014
  16. phisecs

    In a period of 3 h, a man walks 13 km north, turns around and walks 5 km south. Find his average velocity in km/h? Please pay attention to sign. (-) means the average velocity is to the south, (+) means the average velocity is to the North.

    asked on February 21, 2014
  17. phisecs

    In a period of 3 h, a man walks 13 km north, turns around and walks 5 km south. Find his average velocity in km/h? Please pay attention to sign. (-) means the average velocity is to the south, (+) means the average velocity is to the North.

    asked on February 20, 2014
  18. phisecs

    A car travels in a straight line at 67 km/h for 1 h and at 106 km/h for 2 h. How far does it travel?

    asked on February 18, 2014
  19. geometry

    a 16 by 18 foot rectangular section will be covered by square tiles that measured 2 feet on each side if the tiles are not cut how many of them will be needed to cover the section of the wall

    asked on October 4, 2013
  20. geometry

    the perimeter of a rectangle is 72. the base is 3 times the height find the area of the rectangle

    asked on October 3, 2013
  21. englsih

    what is writing conventions and how do i improve min

    asked on September 29, 2013
  22. algebra

    The length of a spring is a linear function of the mass of the object hanging from it. For a particular spring, the length was 12 centimeters when a 2-kg mass was attached to it. When a 5-kg mass was hung from it, it stretched to a length of 18 cm. Which

    asked on June 16, 2013
  23. Math

    Let p>q>0 with p+q = 1 and a = q/p < 1. Let X_n denote the random walk with transitions X_{n+1} = CASE 1: X_n + 1 with probability p and CASE 2: X_n - 1 with probability q. For i ≥ 0, we set u_i = P(X_n = 0 for some n ≥ 0|X_0 = i). Give the

    asked on September 7, 2012
  24. Calculus

    Find a power series, centered @ x=0, for function f(x)=x/(1+2x). I know this is a maclaurin series, but my work doesn't get the right answer. Can you please show steps? Also,do all power series start with a 1, as in (1+2x+4x^2+...)? Thanks in advance!

    asked on March 8, 2012
  25. Calculus

    Find a power series, centered @ x=0, for function f(x)=x/(1+2x). I know this is a maclaurin series, but my work doesn't get the right answer. Can you please show steps? Also,do all power series start with a 1, as in (1+2x+4x^2+...)? Thanks in advance!

    asked on March 8, 2012
  26. Math/Finance

    General Hospital has a current ratio of 0.5. Which of the following actions would improve (increase) this ratio? (Hint: Create a simple balance sheet that has a current ratio of 0.5. Then, judge how the transactions below would affect the balance sheet.)

    asked on February 21, 2012
  27. Calculus

    Write the first four nonzero terms and the general term of the Taylor serires for f about x=0. f(x)=2x/(1+x^2) I feel that I'm doing this wrong because finding the derivatives of f(x) look really messy. Can you please show me the steps? Thanks in advance!

    asked on February 9, 2012
  28. Calculus

    A block of ice is exposed to heat in such a way that the block maintains a similar shape as it metls. The block of ice is initially 2' wide, 2 'high, and 3' long. If the change in the width of the ice is -1/3 ft/hr, find: the amount of time it will tak

    asked on February 7, 2012
  29. Calculus

    How do I find the limit of (1+sin(pi times x))^(1/x) as x approaches 0? I tried using wolframalpha, but am unable to understand their steps. My thinking is that you set y=the limit and use L'hopital's rule a couple times. The answer I got was y=e^0--->y=1,

    asked on January 19, 2012
  30. Calculus

    Integrate (1/2)sin(x^(1/2))dx. I've tried using u-substitution, with u=sin(x^(1/2)). du would then = ((1/2)x^(-1/2))(cos(x^(1/2))). As you can see, this only make the problem more complicated. I don't get what to do. Thank you in advance!

    asked on January 2, 2012
  31. Calculus

    Integrate dx/xlnx. What method am I supposed to use? I'm totally lost.

    asked on January 2, 2012
  32. calculus

    How do I integrate x(arctanx) dx? Is it some sort of integration by parts? Can you please show steps? Thanks in advance!

    asked on December 15, 2011
  33. Calculus

    If 3x^2-2y^2=4xy + 20, find the point(s) at which the graph from Problem 28 has vertical tangents. I found that dy/dx= (3x-2y)/(2x+2y), but now I don't know what to do. Do I set dy/dx to 0?

    asked on December 14, 2011
  34. Calculus

    I am having trouble differentiating x^2 + 2lny = y (solving for dy/dx). I know that I need to do implicit differentiation, but the answer I get is not correct. The answer I got was (2x-2xy)/2, but the answer is (2xy)/(y-2). How do I do this problem?

    asked on November 30, 2011
  35. Calculus

    How do I integrate (e^(3/x))/(x^2) from 1 to 3. I understand how and why I need to do u-substitution, with u=3/x and so dx=(-3 du)/x^2. After plugging (-3 du)/x^2 in for dx, I get a really messy problem that I don't know how to finish. Can you please

    asked on November 21, 2011
  36. physics

    19. In Figure 10-1, if the force exerted on a 3.0-kg backpack that is initally at rest is 20.0 N and the distance it acts over is 0.25 m, what is the final speed of the backpack?

    asked on November 15, 2011
  37. math

    How do I find the length of curve f(x)=3x^2-2x+3 on the interval [1,4]? I have no idea on how to start this. Anyways, thanks in advance!

    asked on November 15, 2011
  38. Calculus

    How do I determine the area of a region bounded by a function and the x-axis if given y=cosx and interval is [0,ð/2]. This has to do with the Fundamental Theorem of Calculus. Thanks in advance!

    asked on October 27, 2011
  39. Calculus

    The point (1,-2) is on the graph of y^2-x^2+2x=5. Find the value of (dy/dx) and (d^2y/dx^2) at the point (1,-2). How do I find (d^2y/dx^2)? I found. I found (dy/dx) to be 2y(dy/dx)-2x+2=0, but I don't know how to take the derivative of that to

    asked on October 18, 2011
  40. Euro history

    What is the immediate cause of WWII? Is it Germany's invasion of Poland? I can't remember.

    asked on April 22, 2011
  41. math

    two baseball players bat first and second in the lineup the first batter has on base percentage of 0.46 the second batter has an on base percentage of 0.31 if someone is on base but only 0.23 if the bases are empty at the start of the game what is the

    asked on January 5, 2011
  42. Chemistry

    2 B5H9(l)+12 O2(g)---->5 B2O3(s)+9 H2O(l) Calculate the kilojoules of heat released per gram (kJ/g) of the compound reacted with oxygen. The standard enthalpy of formations of B5H9(l), B2O3(s), and H2O(l) are 42.84, -1271.94, and -285.83 kJ/mol,

    asked on November 1, 2010
  43. Math

    I need some help with this question. (5/x-2) = (6/x+6) + {29/(x-2)(x+6)} I don't know how to solve this. Can someone help me figure this out? Thanks.

    asked on September 2, 2010
  44. accounting

    The following information is for X Company for 2009: Direct materials purchased $ 36,484 Direct materials used 34,013 Direct labor 14,439 Overhead 25,464 Work in Process, January 1, 2009 4,118 Finished Goods, January 1, 2009 2,326 Work in Process, December

    asked on February 19, 2010
  45. chemistry

    A compound was found to contain 49.98 g carbon and 10.47 g hydrogen. The molar mass of the compound is 58.12 g/mol. What is the molecular formula?

    asked on January 20, 2010
  46. chemistry

    A compound was found to contain 49.98 g carbon and 10.47 g hydrogen. The molar mass of the compound is 58.12 g/mol. What is the molecular formula?

    asked on January 20, 2010
  47. chemistry

    How many moles are there in 4.76e24 atoms Al?

    asked on January 20, 2010
  48. chemistry

    The pain reliever morphine contains 17.900 g C, 1.680 g H, 4.225 g O, and 1.228 g N. What is the emperical formula of morphine?

    asked on January 20, 2010
  49. chemistry

    The chemical analysis of aspirin indicates that the molecule is 60.00% carbon, 4.44% hydrogen, and 35.56% oxygen. What is the emperical formula for asprin?

    asked on January 20, 2010
  50. chemistry

    How many moles are there in 23.6g Ag?

    asked on January 20, 2010
  51. chemistry

    A sample of carbon dioxide has a mass of 47.4 g. How many carbon atoms are present?

    asked on January 20, 2010
  52. chemistry

    A sample of silver chromate (Ag2CrO4) has a mass of 29.0 g. How many CrO42- ions are present?

    asked on January 20, 2010
  1. 5th grade math

    e

    posted on January 18, 2019
  2. science(check answers)

    1 is false

    posted on October 19, 2018
  3. science(check answers)

    Thx for the answers

    posted on October 16, 2018
  4. Science

    Help

    posted on October 8, 2018
  5. Physics

    Not nice it is not correct answer please check it again

    posted on September 2, 2018
  6. Physics

    Not nice

    posted on September 2, 2018
  7. Physics

    Not nice answer

    posted on September 2, 2018
  8. physics

    16.05 N

    posted on September 16, 2017
  9. Science help

    desertification

    posted on June 16, 2017
  10. writing english

    I think write teacher is a !@#$%^&

    posted on June 15, 2017
  11. math

    ♥️ Is correct I got a 5/5

    posted on March 28, 2017
  12. Physics

    Decrease to one-ninth

    posted on March 7, 2017
  13. Global Studies

    Ann Onymous is right.

    posted on January 10, 2017
  14. ECE

    oral

    posted on November 28, 2016
  15. Science

    Cotton

    posted on May 10, 2016
  16. Human Sexuality

    c

    posted on November 29, 2015
  17. Child Developmental

    The second question b or c

    posted on October 2, 2015
  18. Child development

    Thanks so for the help.

    posted on October 2, 2015
  19. ADHD

    Okay can you please help me?

    posted on October 2, 2015
  20. Physics

    Wa

    posted on September 1, 2015
  21. statistics

    0.0067

    posted on May 5, 2015
  22. School

    Small muscle usually occurs before large muscle. I am think false.

    posted on November 20, 2014
  23. phisecs

    In a collision, an automobile of mass 826 kg stops with constant acceleration in 20 m from an initial speed of 17 m/s. What is the acceleration of the car in m/s

    posted on March 31, 2014
  24. phisecs

    thank you for helping me , but i couldn't find similar question at the bottom or in the search button , could you please give me the link to it . thank you soo much

    posted on February 21, 2014
  25. phisecs

    279 thanks

    posted on February 18, 2014
  26. w

    does that mean 22 people of every 100 that aplky get accepted

    posted on October 2, 2013
  27. Physics

    5A doesn't seem to work

    posted on June 17, 2013
  28. Physics

    22.8

    posted on June 4, 2013
  29. Physics

    anyone get #6???

    posted on May 27, 2013
  30. Physics

    anyone get #6

    posted on May 27, 2013
  31. Physics

    anyone????

    posted on May 27, 2013
  32. Physics

    anyone get this

    posted on May 8, 2013
  33. Physics

    c = 0.00448571428571 d = 0.00897142857143 do you know lightly damped circuit or RC circuit

    posted on May 8, 2013
  34. Physics

    heeeelp

    posted on May 8, 2013
  35. Physics

    formulas for b and c anyone?

    posted on May 8, 2013
  36. insurance prep

    Where i can find information about blocks 18 and 19

    posted on July 7, 2012
  37. 4th grade limericks

    So fat and could glow

    posted on May 30, 2012
  38. Calculus

    Thank you! That was helpful :)

    posted on February 9, 2012
  39. Calculus

    awesome! Thanks Damon ;D

    posted on January 2, 2012
  40. Calculus

    very cool. Thanks, both of you! Does wolfram alpha give steps for all integration problems?

    posted on January 2, 2012
  41. Calculus

    thanks! that was really helpful ;)

    posted on December 14, 2011
  42. Calculus

    Thank you! Now I understand that I should've multiplied by y instead of moving the whole "2/y (dy/dx)" to the other side of the equation and then factor the dy/dx out. I can't believe how such a simple manuever can make the problem so much easier to solve.

    posted on November 30, 2011
  43. Chemistry

    change grams to moles using the periodic table then use this equation molarity= moles of solute/liters of solution

    posted on April 22, 2011
  44. algebra

    Rewrite the equation to standard form. 6x-5y=15 (6/5)x-y=3 y=(6/5)x-3 The coordinates for y intercept is always in the (0,_) format. Y-intercept is what is added or subtracted. The coefficient on x (number multiplied to x) is slope. slope=6/5

    posted on April 22, 2011
  45. Math

    when x=10, y=17 when x=50, y=97 when x=100, y=197

    posted on April 22, 2011
  46. Math

    X|Y --- 0|(-3) 1|-1 2|(1) 3|3 4|(5) 5|7 y=2x-3

    posted on April 22, 2011
  47. Biology

    They are all right. I take AP BIO.

    posted on April 22, 2011
  48. physics

    Well this must be a pretty common question because I had it too. The problem here is the Voy is Vo(SIN(23) not cos)/10.0 (or 9.8). Also because the Vfy is 0 in the middle of the jump used only use half the X for the horizontal component. This is how I got

    posted on October 25, 2010