1. physics- torque

1. Find the magnitude of the torque produced by a 3.0 N force applied to a door at a perpendicular distance of 0.25 m from the hinge. 2. A simple pendulum consists of a 3.0 kg point mass hanging at the end of a 2.0 m long light string that is connected to

2. Physics

1. The efficiency of a squeaky pulley system is 73 percent. The pulleys are used to raise a mass to a certain height. What force is exerted on the machine if a rope is pulled 18.0 m in order to raise a 58 kg mass a height of 3.0 m? So to find the force

3. Science

Natural rubidium has an average mass of 85.4678 amu and is composed of isotopes 85Rb (mass = 84.9117 amu) and 87Rb. The ratio of the isotopes 85Rb/87Rb in natural rubidium is 2.591. What is the mass of 87Rb? Let x be the fraction of the Rb atoms that are

4. Chemistry

2. You have a sugar solution (solution A) with concentration x. You pour one-fourth of this solution into a beaker, and add an equivalent volume of water (solution B). a) What is the ratio of sugar in solutions A and B? b) Compare the volumes of soutions A

5. Calculus

How do I rewrite log4 1=0 as an equivalent exponential equation? How do I rewrite 4 to the -2 power = 1/16 as an equivalent logarithmic equation? Any help is greatly appreciated. If 4 is the BASE of the logarithm, then log (1) = 0 means ...4 4^0 = 1 4^(-2)

6. british idioms

are these idioms british? pig in a poke, back to basics, back to square one, to sling one's hook, a baker's dozen, gone for a burton and break one's duck i also have to make some tasks about them..can anyone give my an idea?should i make a quiz or

7. religion,help

I have to also find the sacred text so this is what i have: for Hinduism = the vedas which are the rig veda, sama veda, yajuir veda, and atharva veda. for Confucianism= they were by the chu shi (1130-1200 CE) during the sung dynasty. which are the Si Shu

8. Weather

what is 34f in celcius C= 5/9 (F-32) 32F is the freezing point of water, so 34F ought to be close to zero in C. Do the math.

9. English

Hi, I am analyzing poetry in my English class, and I have a? on Henry Wadsworth Longfellow’s poem, A Psalm of life. I have to say if it is emotional or physical. I think this poem is emotional, but I do not know how to explain that it is.

10. math, help

how do i write the equations so i can solve it i will do the solving but help me out with the equation please.for the following: Four pencils and five pens cost\$2.00. THree pencils and four pens cost \$1.58. Find the cost fo a pencil and the cost of a pen.

11. HCl - Chem

Assume you had a very magnified view of a solution of HCl that allowed you to "see" the HCl. Draw this magnified view. If you dropped in a piece of magnesium, the magnesium would disappear and hydrogen gas would be released. Draw this out using symbols to

12. Math

What are the solution sets of the following 3 problems,the square root of x squared + 3x = x-3, the square root of 3x + 10 = x + 4 and finally the square root of 8x - 2 = the square root of 2x? Help much appriciated. I will one as an example. sqrt(3x + 10)

13. Chem

Circle the letter of the unit of mass commonly used in chemistry that equals 1/1000 Kilogram. a)gram b)Milligram c)milliliter Kilo is 1000. What is 1/1000 of 1000?

14. biology

Why must plants have both mitochondrion and chloroplasts? Thanks in advance. I think it has something to do with the fact that chloroplasts convert sunlight into chemical energy. Does that sound right? One of the most widely recognized and important

small companies typically have difficulty competing against large multinationals when their governments take part in regional trade blocs. What could governments do to help their small companies compete after the formation of such blocs? Thanks for any

16. religion,help

what is a good website where i can find the countries of origin for: hinduism buddhism confucianism daoism now one more question for right now. when they are asking for the country of origin do they refer to where did thAT NAME COME FROM? OR WHAT IS IT

17. Essay help

I need to write an essay outline on "phishing." (Phishing is a form of identity theft where a scammer sends someone an email that appears to be from a legitamite organization and then tricks him/her into providing personal information like PIN numbers,

18. math

Given: f(x)=log 5 x what is the value of f(125) and f(1/25)? Totally lost! I assume you mean f(x) = log (5x), not log 5 * x. If this is the case, then f(125) = log 600 and f(1/25) = log (1/5) If the base of the logs is 10, then log 600 = 2.778..

19. HIstoRy

My question is what is really dictator,, dicatorship ,, Totalitarianism,, Communist didcatorship and Facism start here: http://www.onelook.com/

20. early childhood question-plz help

Mrs.Monroe,the crossing guard,is helping children cross the street. Spencer runs ahead of the group instead of waiting for the walk signal from Mrs. Monroe.Frantic,Mrs. Monroe yells at Spencer,"You are not paying attention today Spencer!" Which of the

21. Chemistry (Check)

Classify each of these statements as always true, sometimes true, or never true 11)sometimes true 12)Never True 11)Scientific notation is used to express large numbers in convenlent form. 12)Siginificant figures include all the digits that can be known

22. math,correction,help

please can someone tell me where i am wrong. Directions: Translate to a system of equations and solve. Problem: Colored copies cost 10cents per copy and white copies cost 5cents per copy. Sandy made 400 copies, some of which were colored and the rest

Hello, I am new to this website. I visited this website few times.I have some HEALTH questions.I am sick since 5 days.This is about my HEALTH.Please answer my questions if you know the answer to it! My problem is: I was chewing the BIG RED CINAMMON FLAVOR

24. egg protection device

Hi. I need to know how to make an egg protection device out of straws and duct tape. Thanks. Experiment! Experiment! Experiment!

I believe that the answer to the square root of x^2 + 3x = x-3 is X = 3, x=-3 but I'm not sure. I believe the answer to the square root of 8x -2 = the square root of 2x is x=2 again I'm not sure. why are you posting under several names? I like making up

26. religion, help

what does it mean when they want the historical figures and events. Can you provide me with what should the answer consist of towards what they are looking for. so i can look for it. also for central believes does that mean they want their main believe not

27. math

Show that if x is a nonzero column vector in R^n, then the nxn matrix: A = I - 2/||x||^2 * xx^T is orthogonal. Notation key: ||x|| = norm of x x^T = transpose of x I = identity matrix. Let me try to convince a math student to use "physics" notations that

28. Climate Graphs

I need a climate graph of Fredericton, New Brunswick, Canada present time, so about 2000-2006. I have looked everywhere for stats or graph. I also need an older on for comparision perhaps the 1990s. Where can I find these. :( This site has climate graphs

29. math,algebra

what is the difference and similarities if solving an equation with varibles in the equation if it had 1 or 2 or even 3 variables? Here is one: Money left in Wallet= money earned + money found - money lost - money spent. I don't understand? can you please

30. biology - temp on enzymes

I have a practice question and I need some help on it because I am rather confused! 'Investigation into the effect of temperature on enzyme activity' -Casein is an insoluble milk protein found in powdered milks -Casein forms a whits suspension which clears

31. phyiscs- rube goldberg machine

Identify two types of simple machines that are included in a Rube Goldberg machine. Pick any simple machines: For example, wedge, and lever.

32. Precalculus

I'm studying for my precalc exam and have completed 42 practice problems. I have 3 I need to answer that I can't. Please help. What is the base of the function G(x) = log subscript b x if it's graph has points (16,4)? Using the properties of logarithms how

33. math retry 2

8^x = 16^x+2, x+2 -2=0 8^x =16^x+2, 2 x 8 = 16 log sub 5 (2x+3)=2 2(7/2)+3=2 log sub 5 (2x+3)=2 log sub 5 =11 The first and second lines make no sense whatsoever. The last is even more confusing. Watch 8^x = 16^(x+2) 8^x = 8^2(x+2) x= 2x+4 solve for x. On

34. physics

I was wondering if this formula is dimensionally correct: v = Square root FX/m divided by mass v= m/s F= kgm/s^2 X = meters divided by mass (kg) v = root kgm * m s^2 ------ kg My half solution: m/s = root kgm^2 s^2 ------ root kg m/s = m/s root kg --- the

35. pre-calculus

What is the domain and range of log3 (1-x)? I will be happy to critique your thinking. To assist you, consider log (-4) log (0) log 25 Those are to the base 10, changing to another base just changes the numbers, not the function.

36. math,algebra

what is a real-life situation that follwos a linear equation, withthe independent variables being years. What would the slope say about the future years. Wood growth in a forest vs time. Wood growth = m * time can you help me understand i don't get still

37. French

I just have a few questions ok: #1) How do you say "we ate" in French? I think it is nous mangons but that didn't look right so I want to be sure. #2)How do you say"we swam" in French? because I thnk it is nous nagons but that doesn't seem right either.

38. Math

I believe that the answer to the square root of x^2 + 3x = x-3 is X = 3, x=-3 but I'm not sure. I believe the answer to the square root of 8x -2 = the square root of 2x is x=2 again I'm not sure. Square both sides of your equation. It breaks down quite

39. Econ

A firm faces the following sales function: Q=5,000-10P+40A+PA-0.8A^2-0.5P^2 where Q is sales, P is price(dollars), and A is advertising expenditures (in hundreds of dollars). Calculate the price and advertising levels that maximize sales. I don't know what

40. need help in math,

Translate to a system of equations and solve using the addition method. The sum of two numbers is88. The difference is 22.Find the numbers? My answer: I started but i think that i am wrong. x + y = 88 y = -x +88 y = -1x + 88 now once i substituted x -1x +

41. English

I wanted to know if I had the right idea. In the poem “To My Dear and Loving Husband" by Anne Bradstreet the poem is emotional because she is expressing the love she has for her husband, and it is also physical because the metaphors she uses helps have

42. math help

what or how would i solve the following i don't need the answer i want to do it but how would i solve this. Water pressure (p) in the ocean is 2.3 tons per square inch at a depth (d) of 2miles and 3.45 tons per square inch at depth of 3 miles. How do i

43. math trouble

I have 2 problems I need help with using either substitution or elimination method what is the solution set of 3x -2y = -4 and 5x = 2y? Second, Given: log sub a 2 = .4, log sub a 3 = .5, log sub a 5 = .8 what is the value of log sub a .01? On the first, I

I have 3 problems I need my answers confirmed for. The solution for log subscript 3 1/9 = x is the solution -1/2? Secondl, what is the solution for 9^2x = 3^x+6 does x=2? Lastley is the answer to 3 ^5x+2 = 81 does x= 2/5? Help sincerely appreciated! The

45. precalc

I'm terrible at pre calc, could someone tell me if the solution set for log subscript 2 x + log sub 2 (x-1)=1 is the solution -1? Using either the elimination or substitution method is the solution set for 4x + y =11 and 2x -y = 7 is the answer (3, -1)?

46. math retry

Is the answer to log sub a 2 = .4, log sub a 3 = .5, log sub a 5 = .8 is it 2.9? Is the answer to log sub 5 (2x+3) = 2 is the correct answer 11? Is the solution to 8^x=16^x+2 is the solution 2? Are you guessing? Something is wrong. Let me see your work.

47. work

9^2x = 3^x+6 x+6-6=0 x+6 -6 you subtract 6 which is why I thought the answer was -6 since 0 wasn't right. 9^2x= 3^4x 3^4x= 3^(x+6) 4x = x + 6 solve for x. You need a tutor quickly.

48. Marketing Management

Describe a product that entered the market over the past two to three years and succeeded. Why did it succeed? Describe a product or service that you saw (or experienced) fail over the past five years. What factors influenced the failure? How did the

49. mole

how do i find... howmany moles are in a specified mass mols = grams/molar mass

50. college application short response

Thank you for anyone that helps me about my college application. (Thank you for your suggestions, Writeacher, I re-writed my paragraph.) In the space provided below, please describe which of these activities has had the most meaning for you, and why. I was

51. pre-calculus

What is the base of the function F(x) = b to the power of x if the graph has points of (1/3, 2)and another off the subject one if g(x)= log 7 x what is g(1/49)? If F(x) = 2 when x = 1/3, and if the !@#\$%^&ntio is of the form F(x) = b^x, then 2 = b^(1/3)

52. pre-calculus

I posted a problem earlier and made a mistake the question is what is the domain and range of f(x)= log subscript 3 (1-x)? Sorry! The answer is the same. The domain and range will be the same as if it were log base 40.

53. Anne/English/2 Jan

To Anne: I'm sure I missed your posting of Jan 2 because it was under ENGLISH! I just found it this morning by accident and posted an answer for you!

54. college application short response

I wish you could help me the short answer of my college application essay. Many thanks Question: Please briefly elaborate on one of your activities. I was elected as the President of the class of 2007 in high school. My job of being a President was to

55. religion,help

what do they mean when they want the nature of god for hinduism,buddhism, confucianism, daoism. What are they asking for also when they want the ethics and morality. The nature of the gods in these religions are their major characteristics. You need to

56. To:Bobpursley

My face is not swollen. It is swollen inside my mouth. Please see a doctor as soon as possible. We are not doctors and cannot give you medical advice. You need to see a doctor in person to find out what is wrong.

57. Calculus II

Does anyone know of a very good website that can teach me to better understand the disk, washer, shell method to finding volume of irregular figures (solid of revolution)using of course, integration techniques (such as when to recognize integration with

58. College Scholarships

I plan on attending a college in the fall with a tution of \$26,000, needless to say I cannot afford this and my parents are in no situation to assist. If anyone knows of any websites that have info/applications for scholarships I would be most greatful. I

59. math

What is the domain and range of g(x) = (1/3) to the power of x? The domain is all real numbers (- infinity to infinity) The range is zero to infinity

60. SCIENCE HELP!!??

HI I Like you to help me with my research on Attraction and repulsion of electrical charges If you would give me any links or websites and thank you alot thanx Check these sites. http://psych.hanover.edu/Krantz/neural/charge1anim.html

61. poetry

can you reccommend 4 humourous poems by different poets http://pages.ripco.net/~mws/Poetry/24.html by Thomas Hardy http://www.silentwords.com/Humorous.html http://dir.yahoo.com/Arts/Humanities/Literature/Poetry/Poetic_Forms/Closed_Forms/Limericks/

62. united nations

Aphabetically, which nation is the first in the United Nations? http://www.un.org/Overview/unmember.html

63. Chem

What is a volume of 1 L also equal to? 1 liter = 1000 cubic centimeters It equals about 1.057 quarts

64. pre calculus

I believe that the domain for f(x) = log subscript 3 (1-x) is x is a real number I think the range for the same equation is y > 1 . the domain of log (1-x) would be such that 1-x > 0 -x>-1 x < 1 whereas the range would be y is any real number Have you

65. math

What is the value of f(125) and (1/25) if the equation is f(x)= log subscript 5 x? Don't have a Clue! look at the answer I gave emma in the post above this one

66. precalc

If g(x = log subscript 7 x then what is the value of g(1/49)? I believe it's 1/2 but I'm not sure. no recall that log 1/49 (base7) = log 1 - log 49 = 0 - 2 =-2

67. precalc

So if f(x) = log subscript 5 x then the value of 125 is -3 and the value of 1/25 is -2. Right?

68. biology(animal cell)

i need to know what a vesicle of an animal cell is and it would be nice to have an anology for it (a comparison between the function but different things) http://www.newton.dep.anl.gov/askasci/zoo00/zoo00296.htm

So if f(x) = log subscript 5 x then the value of 125 is -3 and the value of 1/25 is -2. Right? No, yes.

70. physics

How does an increase in mass affect the magnitude of gravitational force? Force= mass*constant If mass increases, the force....

71. Math Exam Tuesday

My friend swears by your site so I thought I'd confirm some of my more difficult answers for my math practice exam. Is the solution set for 8^x = 16^ x+2 is it -2? Next is the solution set for log subscript 5 (2x + 3) = 2 is the answer 7/2? Lastly is the

Is the solution for log sub 3 1/9 = x does x = -2? Is the answer for 9^2x = 3^x+6 is it 0? Yes, No

73. once more

Is the answer to 9^2x = 3^x+6 is it -6? No. Let me see your work. 9^2x= 3^4x

74. math

Thanks. I will.

75. Chem

A Kilogram was originally defined as the mass of ___________. The kilogram was originally defined as the mass of one litre of pure water at standard atmospheric pressure and at the temperature at which water has its maximum density (3.98 degrees Celsius).

76. math

I am having problems with algeba I have to have this paper done before Tuesday can you help me post what you need help in.

77. ms.sue,religion help

I am very very very confused. okay can you please explain to me what these questions are that you think my teacher wants from the students.For the following: this is all about eastern religions: religions are hinduism,buddhism,confucianism,daoism i have to