Most popular questions and responses by muhammad
1. government

Highlight four limitations on the rights of a citizen

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.

3. Chemistry

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

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?

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

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

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

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.

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

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

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

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

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

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%?

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

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

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

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?

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

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?

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

22. Maths

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

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

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?

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?

26. chemistry

how many sig figs in this number: 32.6721

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

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 ?

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

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)

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.

32. Help plz👍😂

Hero in long way from Chicago book why

33. math

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

34. mathematics

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

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

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

37. Calculus

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

38. Calculus

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

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)

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

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

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?

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.

44. math

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

45. Annur mathematics

Approximate the followin. 1.2.7272to 2d.p

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?

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

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

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

50. math

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

51. Calculus

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

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

53. Pre Algebra

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

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

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?

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

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

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

×+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