maha

Popular questions and responses by maha
  1. National school

    A dilute solution of sulfuric acid is added to 15g of copper and iron mixture. a) write the balanced equation for the occuring reaction. b) the volume of H2 evolved at standard conditions is 4.48L, what is the mass of each of the metals constituting the

    asked on October 27, 2015
  2. science

    find the distance covered when speed is 960 km/hr and time is 1hr 50min.

    asked on December 13, 2015
  3. physics

    fluid of constant density = 960 kg/m3 is flowing steadily through the above tube. The radius at the sections are r1 = 0.05 m, r2 = 0.04 m. The gauge pressure at 1 is P1 = 200 000 Pa and the velocity here is v1 = 5 m/s. We want to know the gauge pressure at

    asked on March 25, 2017
  4. Physics

    Two parallel slits are illuminated by light of two wavelengths one of which is 5.8*10exp -7m .On the screen the fourth dark line of known wavelength coincides with the fifth bright line of light unknown wavelength.Find the unknown wavelength?

    asked on March 4, 2018
  5. Statistics

    If two enents are independen, then

    asked on July 12, 2019
  6. Probability

    A student takes examination in four subjects A, B, C, D. His chance of passing in A is 4/5,in B is 3/4in C is 5/6 and in D is 2/3.To qualify he must pass in A and at least two other subjects. What is the probability that he qualifies?

    asked on November 17, 2017
  7. physics

    A beer is dropped from a window 30 m above the ground. How fast will it be moving just before it lands? (Neglect air resistance).

    asked on March 5, 2017
  8. physics

    A bicycle starts from rest and reaches 6.0 m/s after 4 seconds. What is its acceleration?

    asked on November 13, 2016
  9. Chemistry

    Is the Conversion of NO2 to HNO3 endo- or exothemic? Calculate the enthalpy and free energy change for the reaction 4NO2 + o2 + 2H2O-----> 4HNO3 in the aqueous phase.

    asked on February 12, 2013
  10. BIOCHEMISTRY

    By using the Henderson Hasselbalch equation,Calculate the Pka of lactic acid when the concentration of lactic acid is 0.01 molar. the PH is 4.80 and concentration of lactate is 0.87 molar

    asked on September 25, 2014
  11. math(mechanics 1)

    a car traveling on a straight road accelerates uniformly at a meter per second square from its initial speed of 20 meter per second until it reaches a speed of 30 meter per second. the car travels at this speed for 600 meter and then decelerates uniformly

    asked on March 4, 2012
  12. b.mathematics

    a shopkeeper allows a discount of 15% on his shop. how much money can a man save if he buys a bag costing rs2500, a shaving set costing rs890 and iron costing rs 2800?

    asked on November 16, 2013
  13. advance geometry

    A plane is flying east, ascending at a constant angle. Jack is standing on the ground, watching the plane come to (horizontally) directly at him. When he first sees the plane, at an angle of elevation of 15 degrees, its horizontal distance from him is

    asked on April 25, 2010
  14. physics

    A concrete wall of thickness one metre of a dam can withstand a side pressure of 10 5 2 N m- . Find the thickness of sidewall at the bottom of the water dam at a depth of 100 m. [ g = - 10 m 2 s and density of water = 10 3 kg/m3 ]

    asked on April 1, 2014
  15. physics

    A water main with a radius of 0.15 m contains water with an average velocity of 3 m/s .What is the flow rate in the water main?

    asked on March 25, 2017
  16. Chemistry

    Is the Conversion of NO2 to HNO3 endo- or exothemic? Calculate the enthalpy and free energy change for the reaction 4NO2 + o2 + 2H2O-----> 4HNO3 in the aqueous phase.

    asked on February 12, 2013
  17. English

    Which one of the following sentences uses pronouns correctly. A. Please give Paul and I your undivided attention. B. Jacob and me are going to set a meeting date. C. Carol told Sylvia and he the good news. D. Send the package to Tanya and him.

    asked on July 22, 2006
  18. calculus

    Find an equation of the tangent line to the graph y=(x^3 + 2)^5 at x= -1

    asked on December 10, 2011
  19. statistics

    mean wage of 5 employee is Rs.1000 of the wages of 4 emoloyee are Rs 800 rs 1200 rs 1300 rs 900.find the wages of 5th employee?

    asked on October 12, 2011
  20. literary

    what do we mean with the turning point in a story

    asked on January 9, 2010
  21. Washington high school

    The relation 3y=5x is an inverse variation where k is equal to 3/5

    asked on December 5, 2015
  22. physics

    Consider a marble moving on a horizontal track with a speed of 10 meters per second( ignore friction and air resistance). the marble leaves the track and falls through the air to the ground a vertical distance of 1.5 meters. how long does it take to for

    asked on January 12, 2012
  23. English

    Which one of the following sentences is grammatically correct. A. I really need to lay down. B. Sit it down over there by the window. C. I thought it would be best if I were to rise the curtin. D. The men came today to lay the carpet in the living room.

    asked on July 22, 2006
  24. physics

    Consider a marble moving on a horizontal track with a speed of 10 meters per second( ignore friction and air resistance). the marble leaves the track and falls through the air to the ground a vertical distance of 1.5 meters. how long does it take to for

    asked on January 12, 2012
  25. U.S History

    Please help me out with this question. I think I know the answer, but I'm not too sure. Thanks! Monroe's message stated that American foreign policy regarding European conflicts would be (a) neutral (b) de facto (c) nationalist (d) firm but friendly I know

    asked on December 21, 2009
  26. silk

    when was it discovered

    asked on March 22, 2010
  1. physics

    Zero

    posted on June 12, 2017
  2. Math

    83%

    posted on December 7, 2016
  3. Math

    if the of musician in a fanfare is between 21 and 49. which way does the musician have to stand to form the biggest number of rectangle

    posted on October 30, 2016
  4. java programming

    5. Write program prompt a user to enter student degree and determine if student is pass or fail?

    posted on March 8, 2016
  5. Speed'Distance'Time

    find the distance covered when speed is 960 km/hr and time is 1hr 50min.

    posted on December 13, 2015
  6. Finance

    9%

    posted on October 9, 2015
  7. Chemistry

    1.05IBs

    posted on January 6, 2015
  8. com101

    1. We learned that the mayor had been engaging in a creative transfer of city employees' pension funds.

    posted on September 27, 2012
  9. health

    Its not C :( Its either.. A or B

    posted on August 31, 2012
  10. Homework Help

    its D :)

    posted on August 29, 2012
  11. Homework Help

    No its not b

    posted on August 29, 2012
  12. math

    y=6x-2 substitute value of y in second equation.it will become x=1 then find y .y=4

    posted on March 4, 2012
  13. U.S History

    Oops, sorry, that's *nationalist.

    posted on December 21, 2009
  14. U.S History

    Thanks for the help! =) Could you please explain why the answer be neutral than naturalist? I just want to understand why the answer is what it is.

    posted on December 21, 2009
  15. U.S History

    Thanks. Could Ms. Sue answer this please, as well, if she's around?

    posted on December 21, 2009