# Christie

Most popular questions and responses by Christie
1. ## physics

Rank the average gravitational forces from greatest to least between:A. Sun and Mars.B. Sun and the Moon.C. Sun and Earth. i answer b,c,a and its wrong

2. ## chem 1

A gas-forming reaction produces 1.35 m3 of gas against a constant pressure of 143.0 kPa. Calculate the work done by the gas in joules.

3. ## PHYSICS

If a fly collides with the windshield of a fast moving bus a) which experiences the greater impact force: the fly or the bus, or is the same force experienced by both? b)which experiences the greater acceleration: the fly or the bus or is the same

4. ## chem

the pressure 15 meters under water is 248 kPa what is the pressure in atm what is the pressure in mmHg

5. ## electrochemistry

I am soooo confused! I was given this PdCl4^2-(aq)+Cd(s)----Pd(s)+4Cl^-(aq)+Cd^2+ I am supposed to give the 1/2 reaction for The PdCl4^2- My teacher said you could figure out the charges on the atoms by, in PdCl4^2, taking the subscript and mult. by the

6. ## physics

If a trapeze artist rotates once each second while sailing through the air and contracts to reduce her rotational inertia to one-third of what it was, how many rotations per second will result?

7. ## algebra/trigonometry

A kite and a height of 75 meters from the ground is attached to a string inclined at 60 degrees to the horizontal. How do you find the length of the string to the nearest meter?

8. ## Math

Shirley is on a Ferris wheel which spins at the rate of 3.6 revolutions per minute. The wheel has a radius of 35 feet, and the center of the wheel is 51 feet above the ground. After the wheel starts moving, Shirley takes 12 seconds to reach the top of the

9. ## Chemistry

2AgNO3 + BaCl2 --> 2AgCl + Ba(NO3)2 How many grams of sliver chloride are produced from 5.0g of sliver nitrate reacting with an excess of barium chloride?

10. ## chem(REALLY NEED HELP )

calculate the total mass of carbon dioxide gas produced when you burn 1000ml of gasoline Density of heptane = 0.684g/ml density of octane =0.703g/ml a) Calculate the mass of carbon dioxide produced from combustion of heptane C7H16 + O2 ------- CO2 + H2O

11. ## Chemistry

N2 + 3H2 --> 2NH3 how many grams of ammonia is produced in the reaction?

12. ## Calculus

A pig farmer wants to enclose a rectangular area and then divide it into six pens with fencing parallel to one side of the rectangle (see the figure below). There are 610 feet of fencing available to complete the job. What is the largest possible total

13. ## Essay

In what ways were cotton production and slavery more of a burden to the South than a benefit.

14. ## chemistry

No precipitate formed when an aqueous solution of NaCl or Na2SO4 was added to the sample solution. A precipitate formed when the sample solution was made basic with NaOH. Which ion(s) are present in the sample soluiton? [Hg2]2+ [Ba]2+ [Mn]2+ I know that

15. ## Physics...What am I doing wrong??

In an experiment, a student measures the speed of sound in air to be 318 m/s at STP. If the accepted value for the speed of sound under those conditionsis 331 m/s, what is the student's percent error? a. 3.9% b. 3.93% c. 4.09% d. 4.1% I tried but it didn't

16. ## Math inequalitites

Hi, I need some help with some inequalitites. Thanks!! Use graphs to find the set. 1.(-9,0) intersection [-4,] I got [-4,0) 2. (-9,0) U [-4,10] I got (-9,10] Solve the linear inequality. Other than (empty set, use interval notation to express the solution

17. ## Gen College Chemistry

2AL+6H-->2AL+3H. What volume of hydrogen gas at STP would be evolved in a reaction of 36.0mg of 98% pure aluminum with the hydrogen being an ideal? I got the ml of hydrogen, but I don't know how to work it with AL being 98%pure.

18. ## Statistics

a. In a random sample of 500 observations , we found the proportion of successes to be 48%. Estimate with 95% confidence the population proportion of successes. B. Repeat part (a) with N=200 C. Repeat part (a) with N=1000 I need to know how to do this in

19. ## physics

To tighten a bolt, you push with a force of 72 N at the end of a wrench handle that is 0.26 m from the axis of the bolt.What torque are you exerting?

20. ## physics

In an experiment, a student measures the speed of sound in air to be 318 m/s at STP. If the accepted value for the speed of sound under those conditionsis 331 m/s, what is the student's percent error? a. 3.9% b. 3.93% c. 4.09% d. 4.1% I tried but it didn't

21. ## Chemistry

2H2O --> 2H2 + O2 if 30 mL of hydrogen in the above reaction, how many milliliters of oxygen are produced?

22. ## physics

If the radius of the Earth somehow bloated to twice its size, with no changes in mass, your weight at the Earth's new surface would be ___A) one-quarter.B) one eighth.C) the same.D) twice.E) half.

23. ## principles of physics

A 19.3- gmass of gold in the form of a cube is 1.00 cmlong on each side (somewhat smaller than a sugar cube).What would be the length of the sides of a cube having four times this mass of gold?

24. ## physics

To tighten a bolt, you push with a force of 72 N at the end of a wrench handle that is 0.26 m from the axis of the bolt.What torque are you exerting? I GOT THIS PART AS 19N *m unsure of the next two: If you move your hand inward to be only 0.10 m from the

25. ## chemistry

would the measure absorbance id an FENCS+ ion solution be higher, lower, or unaffected if there were fingerprints on the cuvette? briefly explain.

26. ## Chemistry

2H2O --> 2H2 + O2 if 30 mL of hydrogen in the above reaction, how many milliliters of oxygen are produced?

27. ## physics

Which of these three produces a greater tidal effect on you right now—the moon, the Earth, or the sunA) The sun.B) The Earth.C) The moon.

28. ## principles of physics

Find the density of a 4.2- kg solid cylinder that is 13 cm tall with a radius of 5.0 cm.

29. ## physics

Why is your weight not one-quarter as much when you climb to the top of a twice as tall tree? A) Because, quite simply, of Newton's law of action and reaction.B) Because parts of the tree itself gravitationally attract you.C) But it is, in accord with the

30. ## Essay

Assess America's contribution to the Allied victory in World War I. Do you think that the US's involvement was crucial to victory? Why or why not.

31. ## physics

it takes about 560 kilowatts to run a diesel locomotive at speed around 180km/h.Magnetically levitated trains(mag levs) on the other hand require less power because the magnetic levitation eliminates energy loss to friction.The worst maglev system requires

32. ## Chemistry

Given the following equation: 2CH3CO2H + Ca(OH)2 --> Ca(CH3CO2)2 +H2O If you start with 30 ml of a 5% solution of acetic acid, how much of a .1M Ca(OH)2 solution would it take to completely neutralize the acid? I'm not quite sure how to start? Should I

33. ## Essay (again)

Assess America's contribution to the Allied victory in World War I. Do you think that the US's involvement was crucial to victory? Why or why not. I am not really looking for anyone's specific opinion, just websites that will give me the info i need to

34. ## Statistics

A normally distributed population has a mean of 40 and a standard deviation of 12. What does the central limit theorem say about the sampling distribution of the mean if samples of size 100 are drawn from this population.

35. ## Statistics

The Centers for Disease Control and other organizations are interested in the health benefits of breastfeeding for infants. The National Immunization Survey includes questions about breast-feeding practices, including the questions about breast-feeding

36. ## physics

The distance between two telephone poles is 54 m. When a 2.0 kg bird lands on the telephone wire midway between the poles, the wire sags 0.16 m. How much tension in the wire does the bird produce? Ignore the weight of the wire. Answer in units of N.

37. ## PHYSICS

A 3kg mass is observed to accelerate 20m/s^2, 20 (degrees). Two forces act on the object. One force is 4.5N, 45 (degrees). Find the other force.

38. ## Math

Without multiplying, Emily knew that 4/9 was greater than 4/10. Explain how she knew

39. ## phsycis

consider the vector F1: (27N,20°)The angles are measured from the positive x axis with the counter-clockwise angular direction taken as positive. Consider the vector:F2=-F1 What is in degrees as measured from the positive x in the counter-clockwise

40. ## Trigonometry

[sinxcosx/(1+cosx(]-[sinx/(1-cosx)]= -(cotxcosx+cscx)

41. ## US History

What delayed the annexation of Texas (other than the threat of war with Mexico)? I already checked out wikipedia. Thanks.

42. ## WORLD GEOGRAPHY

In modern India, the "Garden City" of---- is know as India's "Silicon Valley"

43. ## Math

What volume of hydrogen is necessary to react with five liters of nitrogen to produce ammonia? N2 + 3H2 --> 2NH3

44. ## Statistics

I am stuck on this probability question: Any suggestions of where to start would be great!! Thanks! Given 20 people, what is the probability that among the 12 months in the year there are 2 months containing exactly 4 birthdays each and there are 6 months

45. ## physics

about how many nickels equal a kilogram? 4.A mass of one kg of nickels has a monetary value in the US \$ of approximately: a. \$1 b. 10 cents c. \$10 d. \$1000

46. ## Physics

A particle moves according to the equation x(t) = (10 m/s2) t2 where x is in meters and t is in seconds. Find the average velocity for the time interval from t1 = 2.0 s to t2 = 3 s. Answer in units of m/s. Please help! I have no idea how to set this up :(

47. ## Chemistry

2H2O --> 2H2 + O2 if 30 mL of hydrogen in the above reaction, how many milliliters of oxygen are produced?

48. ## Statistics

A reseacher would like to determine whether a change in lighting to full spectrum light bulbs increases productivity on an assembly line. A sample of n= 36 participants is obtained, and the light bulbs over the line are replaced. under general/historical

49. ## electrochemistry

If I have 2- 1/2 reactions that are- O2(g)+4H(aq)+4e- -------2H2O and CyFe3+(aq) +e---------CyFe2+(aq) How do I determine the # of electrons transfered? In addition, if the electrons are on different sides of the equations how would I then determine the #

What does Lincoln say must happen to ensure that the soldiers that dies at Gettysburg did not die in vain?

51. ## history

Who is the current leader of Russia? Is it Victor Zubkov or Vladmir Putin?

52. ## Algebra

How did solve 7X-2y=32 19-5y=-X using the substitute method

53. ## Math

Using the equation B=p(1+r)^n [B, Balance; p, principal deposit; r, rate; n, number of interest periods]. Find the balance when you have \$17,500 in the bank at 4.25% compounded annually for 6 years. I know the answer but not how to do it.

at the end of an interview you are asked this question "how is this interview going" ,what is the appropriate response

55. ## Englsih

Can i have your opinion about taking the High School Exit Exam...do you want to take it or not and why?

56. ## Math

Ariana took 2 h longer to drive 360 mi on the first day of a trip than she took to drive 270 mi on the second day. If her speed was the same on both days, what was the driving time each day? Start with time, t. If t is the time in hours the first day, then

57. ## Math

find the domain: 1/(x^2+2x-3)=square root of x

58. ## Corporate Finance

Taylor Inc. has preferred perpetual stock outstanding that has a par value of \$100 per share and a dividend yield of 9.4% of stated value. If the appropriate interest rate for Taylor’s preferred stock is 8.3%, how much is each share of preferred stock

59. ## Macro economics

Between year 1 and 3 the price level has risen and real GDP has fallen. During the same time W has risen. Identify one comination of changes in the labor supply and labor demand that could have the effect in the classical goods and services market.

60. ## humanity

8. Newspapers, once available only in print, have evolved into 24-hour multimedia operations. In addition to newspapers, briefly describe the evolution of movies, television, Internet, books and magazines, and media companies throughout the last century.

61. ## chemistry

how do I set up a problem for the solubility product(Ksp) of a salt given the osmotic pressure at 781atm?

62. ## New Nationalism

How did new nationalism respond to industrilization?

63. ## Government

Does anybody have any ideas as to where i can finde info about the Democrats and Republicans in the late 1800s, other that wikipedia?

64. ## Civil War

What was the role of the Emancipation Proclamation in the formulation of Northern trategy and war goals?

65. ## Math

How many sides are there in an argument?

66. ## math 156

how are concepts of the greatest common factors divisibility, and lowest common multiple used when computing fractors? provide an example and demonstrate how the concepts are used.

1. ## Math

That is the same answer that I got but somebody told me it was wrong. Can't see how it is wrong because the only two variants are the cows and chickens.

posted on December 13, 2017
2. ## chemistry

Which of these pressures is the lowest? 1.1atm, 16.7psi, 740mm Hg, 111458 pa

posted on March 7, 2017
3. ## algebra/trigonometry

Oh the mistake was me putting sin60 over 75. I understand the concept.

posted on May 16, 2016
4. ## algebra/trigonometry

Yes it did. I just wasn't familiar with the concept but thanks.

posted on May 16, 2016
5. ## algebra/trigonometry

I divided sin 60 degrees and 75 and got 0.0115.

posted on May 15, 2016
6. ## Math

Yes, I've done that obviously, but I need to show work.

posted on February 12, 2015
7. ## chem(REALLY NEED HELP )

thats all the info we are given but i found the mass using the formula density= mass/volume mass of heptane is 648 grams and mass of octane is 703 grams i just don't know what to do next

posted on December 2, 2014

thx yalll all those answers helped

posted on October 22, 2014
9. ## Chemistry

How would I convert 5% to M?

posted on December 4, 2012
10. ## physics

hmmmmm. You have been given a tricky one I don't know good luck

posted on April 10, 2012
11. ## algebra

It depends how you look at it.

posted on April 10, 2012
12. ## physics

If you move your hand inward to be only 0.10 m from the bolt, find the force that you should exert to achieve the same torque.

posted on March 3, 2012
13. ## Corporate Finance

Figured it out: dividend yield x par value divided by interest rate .094*100/.083 = \$113.25

posted on April 4, 2010
14. ## Statistics

never mind got it

posted on February 12, 2010
15. ## Statistics

posted on February 12, 2010
16. ## Gen College Chemistry

Thanks so much! Sorry about the equation, it was 3 H2.

posted on October 22, 2008
17. ## Chemistry

For some reason, this isn't working out for me. Can you further help me? I am very confused.

posted on October 7, 2008
18. ## Englsih

how is the exit exam an opportunity though?...for you to go to the college you wanted?

posted on March 6, 2008
19. ## Englsih

but in your opinion...do you think students should or should not take the exam because i am writing a persuasive essay and i need ideas...my con is that the ELD students are usually not ready for the exit exam that may cause problems for them...now i need

posted on March 6, 2008
20. ## English

I think that it is an appropriate way to start a sentence, but a better usage of "you see" would be at the end of a sentence. I had a dream you see. It really depends on the setence and what you are trying to convey.

posted on February 6, 2008
21. ## Essay

I'm not really looking for opinions. What i need is some good websites that will give me the info i need to form my own opinion.

posted on February 6, 2008
22. ## biology

a cork

posted on January 2, 2008
23. ## EMERGENCY!!!

a good website is webmd with a perid and then a com at the end

posted on November 19, 2007
24. ## APUSH

APUSH means Advanced Placement United States History. The United States in the 1800s.

posted on November 12, 2007
25. ## history

thankyou

posted on October 8, 2007
26. ## history

i think it is Putin but I'm not all so sure

posted on October 8, 2007
27. ## Pre-Algebra

the rule is subtract 15 (from every 5)

posted on October 8, 2007
28. ## Pre-Algebra

the rule is subtract 15

posted on October 8, 2007
29. ## Math

there is a number answer, which is y i am confused.

posted on September 28, 2007
30. ## science

That isn't a question

posted on September 11, 2007
31. ## social studies

aka Dred Scott vs. Sanford, In what is perhaps the most infamous case in its history, the court decided that all people of African ancestry -- slaves as well as those who were free -- could never become citizens of the United States and therefore could not

posted on September 11, 2007
32. ## calculus

f*g= 2(3x+2)^2-(3x+2) G*f= 3(2x^2-x)+2 f*f= 2(2x^2-x)^2-x g*g= 3(3x+2)+2

posted on September 11, 2007
33. ## MATH

3x^2+20x+12 x^2+20x+36 (3x+_a_)(3x+_b_) What times wat =20 is a and adds up to 36 is b Then divide a by 3 and b by 3 giving u: (x+__)(x+__) then make x = to 0 x+__=0 x+__=0 subtract over the number and you will have your answer

posted on September 11, 2007