muhammad

Most popular questions and responses by muhammad
  1. government

    Highlight four limitations on the rights of a citizen

    asked on April 12, 2017
  2. physics

    Find the distance (measured in earth radii, RE) from the center of the earth to a point outside the earth where the acceleration of gravity due to the earth is exactly one ninth of its value on the surface of the earth.

    asked on April 24, 2010
  3. Chemistry

    How many moles of Fe3O4 are required to supply enough iron to prepare 0.442 mol Fe2O3?

    asked on September 22, 2012
  4. Math

    A ship, proceeding southward on a straight course at the rate of 12 miles/hr is, at noon, 40 miles due north of a second ship, which is sailing west at 15 miles/hr. a) How fast are the ships approaching each other 1 hour later?

    asked on November 14, 2018
  5. chemistry

    Sodium thiosulfate, Na2S2O3, is used as a fixer in photographic film developing. The amount of Na2S2O3 in a solution can be determined by a titration with iodine, I2, according to the equation: 2Na2S2O3(aq) + I2(aq) --> Na2S4O6 +2NaI(aq). Calculate the

    asked on March 2, 2014
  6. Psychology

    Which of the following scenarios is the best example of negative reinforcement? a. Vanna fastens her seatbelt as soon as she gets in her car to stop the annoying alert sound. b. Drake no longer cuts class now that his parents confiscated his iPod. c. Maria

    asked on February 26, 2017
  7. Psychology

    7. Research examining the perceptual abilities of newborn and very young infants has: a) provided little information regarding the notion that infants experience a "blooming, buzzing confusion" b) tended to contradict the idea that infants experience a

    asked on February 17, 2017
  8. Calculus

    The base of a solid is the circle x2 + y2 = 9. Cross sections of the solid perpendicular to the x-axis are equilateral triangles. What is the volume, in cubic units, of the solid? 36 sqrt 3 36 18 sqrt 3 18 The answer isn't 18 sqrt 3 for sure.

    asked on November 26, 2016
  9. Maths

    There are fifty students in a class. In a 100 marks exam, 20 students scored less than 30 marks, 5 students scored more than 70 marks and the remaining scored between 30 and 70 marks. If passing score is 55 marks and 40% students have passed the test, what

    asked on July 13, 2017
  10. PHYSICS

    Ricardo and Jane are standing under a tree in the middle of a pasture. An argument ensues, and they walk away in different directions. Ricardo walks 28.0 in a direction 60.0 west of north. Jane walks 11.0 in a direction 30.0 south of west. They then stop

    asked on March 7, 2012
  11. PHYSICS

    A car of mass 1000kg travelling @72km/hr is brought to rest in a distance of40m find average stoping for nd time taken

    asked on April 5, 2019
  12. Psychology

    Which of the following scenarios is the best example of positive reinforcement? A. Maria now buys a different brand of cigarettes to get two packs for the price of one. B. Nate no longer arrives late at work following a reprimand from his boss. C. Drake no

    asked on February 26, 2017
  13. Psychology

    15. How might adolescents’ tendency to engage in such risky behaviors as unsafe sex and experimental drug use reflect brain development during childhood and adolescence? a) The limbic system does not develop fully until early adulthood; adolescents

    asked on February 18, 2017
  14. Maths

    Shopkeeper sells his goods at 20% above the cost price. What will be the percentage profit he will earn if he discounts the price by 10% and then offer a seasonal discount of 5%?

    asked on July 13, 2017
  15. Calculus

    The base of a triangle is decreasing at the rate of 2 cm/ min and the height is increasing at the rate of 1cm/ min. Find the rate at which the area is changing when the base is 8 cm and the height is 6 cm. Is the area increasing or decreasing at that

    asked on November 25, 2016
  16. Physics

    body is at equilibrium under the action of three forces.one force is 10N acting due east and one is 5N in the direction 60¡ã northeast . what is the magnitude and direction of the third force

    asked on February 28, 2018
  17. Psychology

    charles has been told by the doctor he has lung cancer that is beyond treatment. His doctor tells him that he will probably die within a year. Charles suddenly starts to laugh and tells the doctor that the lab must have mixed up the test results. Chalres

    asked on February 17, 2017
  18. accounting

    Identify several ways in which you currently use accounting information in your life as a student. Also identify several situations in which, while you are still a student, you might be required to supply financial information about yourself to others?

    asked on February 6, 2011
  19. kuwait

    You are camping with two friends, Joe and Karl. Since all three of you like your privacy, you don't pitch your tents close together. Joe's tent is 19.5 from yours, in the direction 21.5 north of east. Karl's tent is 41.0 from yours, in the direction 41.0

    asked on March 7, 2012
  20. science chemistry

    1000g of a 55%(mass percentage) nitric acid solution is to be diluted to 20%(mass percentage) nitric acid solution.how many liters of water should be added to the starting solution?

    asked on November 5, 2012
  21. physics

    A rocket carrying a satellite is accelerating straight up from the earth's surface. At 1.20 after liftoff, the rocket clears the top of its launch platform, 68 above the ground. After an additional 4.85 , it is 1.50 above the ground.Calculate the magnitude

    asked on March 11, 2012
  22. Maths

    The diameter of a bicycle wheel is 14 cm.What is the distance covered by it in 50 revolution

    asked on January 24, 2017
  23. math

    you are baking cookies. recipe 2 cup sugar 1-1/2 cup flour 2 eggs a- you make one and one-half batches of cookies, how many eggs have you used? Answer- 2 eggs b- Each batch makes 24 cookies. you make x batches of cookies but eat 5 cookies as you are

    asked on November 18, 2015
  24. science chemistry

    1000g of a 55%(mass percentage) nitric acid solution is to be diluted to 20%(mass percentage) nitric acid solution.how many liters of water should be added to the starting solution?

    asked on November 5, 2012
  25. math

    in a class there are 35 students.25 of the students can play basketball ,and 15 of the students can play football .5 of the students cannot play either of these.how many students can play both?

    asked on January 17, 2014
  26. chemistry

    how many sig figs in this number: 32.6721

    asked on September 13, 2013
  27. physics

    A ship leaves the island of Guam and sails a distance 280 at an angle 38.0 north of west.In which direction must it now head so that its resultant displacement will be 115 directly east of Guam? (Express your answer as an angle measured south of east) How

    asked on March 7, 2012
  28. physics

    The scalar product of vectors and is +53.0 . Vector has magnitude 6.00 and direction 28.0 west of south. If vector has direction 39.0 south of east, what is the magnitude of ?

    asked on March 7, 2012
  29. Algebra 1

    Alisha is paying $20 for a large pizza,which is 18 inches in diameter, a better buy than paying $5 for a personal size pizza that is 6 inches across?Explain

    asked on December 21, 2016
  30. Calculus

    The number of people expected to have a disease in t years is given by y(t) = A.3^(t/a) (i) If now (year 2016) the number of people having the disease is 1000, find the value of A. (ii) How many people are expected to have the disease in five years? (iii)

    asked on November 29, 2016
  31. Calculus

    Find the volume of the solid formed by rotating the region bounded by the graph of y equals 1 plus the square root of x, the y-axis, and the line y = 3 about the line y = 5.

    asked on November 26, 2016
  32. Help plz👍😂

    Hero in long way from Chicago book why

    asked on August 12, 2014
  33. math

    3/5+3/17= 2 1/2 1 0 need help

    asked on October 27, 2017
  34. mathematics

    If 24 out of 30 pupils in a class are present, what percentage of the pupils are present

    asked on October 19, 2017
  35. university chemistry

    the oxygen produce was colleced by displement method at (22c)at a total pressure of (754torr)the vapor pressure of water at (22c) in (21torr) calculate the pershel pressure of oxygen in the collected

    asked on March 12, 2016
  36. Math

    Emily hired a new employee to work in your bake shop. In one hour the employe burned 660 chocolate chip cookies. If this presented 13% of the days production, how many cookies did you plan on producing that day

    asked on January 4, 2018
  37. Calculus

    Determine the relative extremum for the function , f(x,y)=((x^2)+(y^2))(e^-x)

    asked on November 26, 2016
  38. Calculus

    Find dz/dy for the following : xln(1-2y) = zsin((x^2)z)-3y+z

    asked on November 26, 2016
  39. Calculus

    The number of people expected to have a disease in t years is given by y(t) = A.3^(t/a) (i) If now (year 2016) the number of people having the disease is 1000, find the value of A. (ii) How many people are expected to have the disease in five years? (iii)

    asked on November 11, 2016
  40. Calculus

    Two ants, red ant and black ant, creeping along lines in 3-space. At time t, red ant is at point on the line x=3-t , y-2=2t , z-2t=6 and at the same time t, black ant is at the point on the line 2x=t , y-3t=2 , z=2+t a) Find the starting distance between

    asked on November 11, 2016
  41. PHYSICS

    A perfect gas at 415 degree centigrade. The volume remains constant at 20 cubic meters and pressure of 1750 Gauge. Calculate the final value of V2 AND T2

    asked on October 30, 2016
  42. Chemistry

    an ideal system absorbed some amount of heat and gas expand and the piston move to 0.4 meter against than the atmospheric pressure. If the cross sectional area of the container is 0.6 meter2. What is the amount of heat absorbed?

    asked on March 3, 2015
  43. physics

    Assume that there is no friction between m2 and the incline, that m2 = 1.8 kg, m1 = 1.4 kg, the radius of the pulley is 0.10 m, the moment of inertia of the pulley is 3.6 kg m2, and θ = 27.0°. Mass 1 is hanging vertically while mass 2 is on the incline.

    asked on February 6, 2015
  44. math

    Why 0!=1 Plz help me to prove this statement.

    asked on April 11, 2014
  45. Annur mathematics

    Approximate the followin. 1.2.7272to 2d.p

    asked on December 5, 2012
  46. physics

    a car of mass 'm'starts from rest and is driven with constant power.after some time it covers a distance 'x'.what should be the speed of car?how we can find the speed of car?

    asked on April 25, 2012
  47. physics

    Two vectors and have magnitude = 3.08 and = 3.08. Their vector product is = -5.07 + 2.00 . What is the angle between and

    asked on March 7, 2012
  48. social studies

    I have a few questions regarding the issue of jemaah prayer for women. We know that the prayers made in the masjidil haram is 100,000 times than other places. Yet, for a woman prayer in her house is better. 1. Does this mean that a woman’s prayer at home

    asked on November 28, 2011
  49. religion

    I have a few questions regarding the issue of jemaah prayer for women. We know that the prayers made in the masjidil haram is 100,000 times than other places. Yet, for a woman prayer in her house is better. 1. Does this mean that a woman’s prayer at home

    asked on November 26, 2011
  50. math

    Solve the following system of equations: 6x – 3y + 10 = 0 2x + y + 9 = 0

    asked on May 15, 2018
  51. Calculus

    Find dz/dy for the following : z=(e^xy)+2ycos(xy-1)

    asked on November 26, 2016
  52. english

    what is the meaning of the phrases frightened the life out,got down on hands and knees and stuck his nose in the air

    asked on October 17, 2015
  53. Pre Algebra

    Find the product and write in lowest terms. 10/51.3/8

    asked on March 12, 2014
  54. Ecology

    I Have an assignment that requires me to design, write and carry out an analysis and a report of survey from beginning to end however, the confusing part it that it has to be done without any actual data i don't know how to start that. Please help topic is

    asked on March 3, 2012
  55. physics

    A rock is thrown off a cliff in the horizontal direction at a speed of 2.4 m/s. What is the magnitude of its vertical speed 0.38 s later?

    asked on January 30, 2012
  1. Chemistry

    121.8=(0.6*121)+(0.4*x) 121.8=72.6+0.4x 49.2=0.4x x=123

    posted on April 19, 2019
  2. physics

    please

    posted on October 16, 2018
  3. English

    Can't think

    posted on June 12, 2018
  4. physics

    0

    posted on March 2, 2018
  5. chemistry

    Cciffhdiydgwd.jie

    posted on February 24, 2018
  6. physics

    1500*0.5=750 750+125=875

    posted on November 8, 2017
  7. math

    ms sue thats not helping

    posted on October 27, 2017
  8. Chemistry

    heife

    posted on August 27, 2017
  9. Chemistry

    the total number of electrons in sulphate ion are 32

    posted on July 19, 2017
  10. Mathematics

    LANATI

    posted on March 23, 2017
  11. Psychology

    I was right.

    posted on February 26, 2017
  12. Psychology

    I was right.

    posted on February 26, 2017
  13. Psychology

    Am I right? Sorry that is my question.

    posted on February 26, 2017
  14. Psychology

    I think it should be A.

    posted on February 26, 2017
  15. Psychology

    Thank you.

    posted on February 18, 2017
  16. Psychology

    Thank you.

    posted on February 18, 2017
  17. Psychology

    I think it should be B. But I am not 100% sure.

    posted on February 18, 2017
  18. Psychology

    Thank you.

    posted on February 17, 2017
  19. Psychology

    After reading the article I think it is B. Am I right?

    posted on February 17, 2017
  20. Chemistry

    Dear, DrBob, you mentioned 4 criteria for a chemical reaction it s absolutely wrong. these are few parameters to check a reaction has done or not, but not a reasons for reaction. NaF and NaCl do not react

    posted on November 28, 2016
  21. Science

    photosynthesis is a chemical reaction through which plant converted solar energy in to chemical energy, this chemical energy is stored in the form of carbohydrate (glucose) which is necssory for plant activities such as growth, maintains, survival etc the

    posted on November 28, 2016
  22. Chemistry

    sol.. ist you converted 250 ml in to liter, so it will be 0.25 l then (0.25l)(0.8 M)(169.87 g/mol) it will be 33.94 gram s0 33.94 g Ag-nitrate require to make 250 ml of 0.8 M sol of silver nitrate Or u can say that 250 ml of 0.8 M sol of silver nitrate

    posted on November 28, 2016
  23. Calculus

    Thank you steve.

    posted on November 26, 2016
  24. critical thinking

    Answer is option A ONLY...... AS AUXILIARY IS followed by a subject. A common sense!

    posted on August 29, 2016
  25. English

    Write a narrative composition title it does not pay to be lazy

    posted on February 6, 2016
  26. math

    n idea

    posted on January 31, 2016
  27. History

    please put up the right answers I need to check

    posted on March 12, 2015
  28. CHEMISTRY

    Ans= Pressure PCl3= 6.78 Torr Pressure PCl2= 26.4 Torr pressure PCl5= 224 Torr

    posted on January 15, 2015
  29. Chemistry

    a) [X]=[Y]=[Z]=1.0 m ans= net reaction goes to the right b) Px=Pz=1.0 atm, Py=0.50 atm ans=net reaction goes to the left

    posted on January 15, 2015
  30. 9th grade algebra

    ×+11=13

    posted on October 16, 2014
  31. math

    thanks

    posted on April 24, 2014
  32. math

    16:64=48:x 16/64=48/x 1/4=48/x by cross multiplication x=192 so you can buy 192inches of wire.

    posted on April 11, 2014
  33. math

    80

    posted on March 30, 2013
  34. Physics

    I am also in the VASTS program.My data is different, but they have the same concept.

    posted on January 4, 2013
  35. math

    divide both sides of equation by 9 x-5=4x-5 or 4x-5=x-5 add 5 and -x on both sides 4x-5-x+5=x-5-x+5 3x=0 divide both sides by 3 3x/3=0/3 x=0

    posted on April 25, 2012
  36. physics

    Assuming you mean 18.1 cm. x = at^2/2 ==> t = sqrt(2x/a) a = g = 9.81 m/s^2 2x = 0.362 t = 0.1921 s. it is right but you enter 18.2 ok

    posted on March 11, 2012
  37. physics

    i forgot to put thanks a lot for your time

    posted on March 7, 2012
  38. PHYSICS

    In what direction should Ricardo walk to go directly toward Jane?

    posted on March 7, 2012
  39. PHYSICS

    What is the distance between them?

    posted on March 7, 2012
  40. kuwait

    thanks you so much

    posted on March 7, 2012
  41. Ecology

    I see what is if i try to assume data results, based on prior knowledge is that possible if so how would i do that can you please point me in the right direction. Thank you very much appreciate it.

    posted on March 4, 2012
  42. physics

    YO are you vlad from my geometry class, mr. schwaigoffer

    posted on November 30, 2011
  43. hardware

    hi i have a project to make a step by step tutorial on how to build a computer can i get help?

    posted on March 13, 2011
  44. chemistry 1st year, for midterm help

    PIEASE TELL ME HOW MANY MAKES THE QUESTION

    posted on January 7, 2010