Questions Asked on
May 17, 2009

  1. physics

    the relationship bwtween frequency, wavelength, and speed holds for light waves because all forms of electromagnetic radiation travel at a single speed in a vaccum. is this true?? or do different forms of electromagnetic radiation travel at different

    asked by Claudia
  2. exponential function

    An investment pays 8% interest, compounded annually. a) write an equation that expresses the amount, A, of the investment as a function of time, t, in years. b) determine how long it will take for this investment to double in value and then to triple in

    asked by Jus
  3. Math

    Which ordered pair is a solution of the system of equations y=x^2-x-20 and y=3x-15? a. (-5,-30) b. (-1,-18) c. (0,5) d. (5,-1) When I solved the system of equations I got 5 and -1. What do I do next?

    asked by Angie
  4. waves and sound

    1-A tunning fork has a frequency of 440Hz. The string of a violin and this tuning fork, when sounded together, produce a beat frequency of iHz. From these two pieces of information alone, is it possible to determine the exact frequency of the violin

    asked by Cynthia
  5. Logarithmic Function

    A spacecraft is approaching a space station that is orbiting Earth. When the craft is 1000 km from the space station, reverse thrusters must be applied to begin braking. The time, t, in hours, required to reach a distance, d, in km, from the space station

    asked by Jus
  6. physics

    I have a few questions that i am not too sure how to figure out... 1- as a racing car zooms by you, its pitch decreases by 20%. If the speed of sound is 345m/s, how fast is the car travelling? 2-a person has a threshold of hearing of 5db. another person

    asked by kate
  7. Chemistry I

    A scuba diver's tank contains 0.23 kg of O2 compressed into a volume of 3.5 L. (a) Calculate the gas pressure inside the tank at 11°C. ________atm (b) What volume would this oxygen occupy at 20°C and 0.92 atm? ________L what are the formulas for this

    asked by Elizabeth
  8. physics

    When a guitar string is sounded along with a 440Hz tuning fork, a beat frequency of 5Hz is heard. When the same string is sounded along with a 43Hz tuning fork, the beat frequency is 9Hz. What is the frequency of the string??.. The first thing i thought of

    asked by help:(
  9. Exponential Word Problem

    An investment pays 3.5 percent interest, compounded quarterly. a) write an equation to express the amount A, of the investment as a function of time, t, in years. The answer is A(t)=P(1.00875)^4t Ok, but my question is this: Why isn't the equation

    asked by Jus
  10. geometry

    A regular polygon has 12 sides. What is the measure of each EXTERIOR angle?

    asked by Lauren
  11. English

    1. He struck me on the head. He struck my head. 2. He looked me in the face. He looked at my face. 3. He took me by the hand. He took my hand. (Is each pare the same? Which one is frequently used?)

    asked by John
  12. OChem

    Anhydrous conditions are vital for a successful Grignard synthesis. To demonstrate this point, calculate the mass of water it would take to destroy the phenylmagnesium bromide that synthesized from 0.48 mL of bromobenzene and 112.5 mg of magnesium. What is

    asked by bee
  13. Math

    dz =(−sinx + 2xy^2)dx +(2x^2 y)dy Integrate the differential to find the function z. Would I say that z was equal to two separate differentials and integrate the first part of the function with respect to x and the second part with respect to y? z = cosx

    asked by Clare
  14. algebra

    Militsa has 4 times as many nickels as dimes. Their total value is $8.10. How many of each coin does she have

    asked by Benjamin
  15. English- Repost

    I really need help on this, please help! Posted by Priscilla on Saturday, May 16, 2009 at 5:28pm. I did not really understand the poem, Moon Rondeau. Here is the lyrics: "Love is a door we shall open together." So they told each other under the moon One

    asked by Priscilla
  16. cjs250 Introduction to Security

    What component of the overall security objective do you think deserves the most attention in the environments mentioned in the article?What components would be less pertinent for these particular environments during a vulnerability assessment? Why? o

    asked by Anonymous
  17. Diversity in the Classroom

    Imagine that you have been asked to serve on the advisory board for a new, alternative school program in your school district. The advisory board must specify the factors that will be considered in determining which students qualify for the program and

    asked by B.B.
  18. English

    I am writing a poem. Can someone please give me some suggestions on how to imporove the poem, especially line 5. Also, I want to use some sound devices in the poem. Any ideas? Here is the poem: Education You are light that lightens up our lives You are as

    asked by Anonymous
  19. Science

    1.Differentiate between soil permeability and retentivity. 2.Differentiate between chemical factors and biological factors of soil organisms. Please note,I wouldn't be needing any information from: Soil-Wikipedia,the free Encyclopedia. Thanks.

    asked by Kavita
  20. Language Arts

    Hi! I'm having trouble coming up with a paper for a magazine school project im doing. My magazine topic is about preforming arts and i need to write a persuasive paper. It needs to persuade the reader to do something while advertising something. Any help?

    asked by Eleane
  21. math

    The exterior angle of a regular polygon is the angle formed by an extended side and the adjacent side. c) How do the central angel and the exterior angle of a regular pentagon compare? Is this relationship true in any regular polygon? Explain. Help

    asked by CAITLIN D.
  22. How does this sound?

    Write a 350- to 700-word paper in APA format describing two approaches or indicators to measuring patient outcomes. Measuring the quality of care is essential to being able to identify which areas of patient care need improvement. A positive patient

    asked by Jen
  23. Chemistry -

    If a solution is 0.25 M KOH...how can i figure out the hydronium concentration and hydroxide concentration? i'm confused..because isn't this a salt?

    asked by Lisa
  24. English

    So for English we're doing poetry. With a partner we both wrote our own poems and compared them. We had to find one word that fits into both poems and we got the word "Change". Now we have to be able to read our poems while not boring the class by doing

    asked by Brian
  25. Math

    A set of homogeneous simultaneous equations is given by x + ky = 0 kx + 3y = 0 Calculate the two values of k that lead to non-trivial solutions to these equations and express y in terms of x for the two values. I thought that for the solutions to be no

    asked by Alice
  26. Maths

    Hey :) I'm sitting my maths non-calculator GCSE tomorrow and am currently revising. I'm doing a practise paper and am currently stuck on this question: Express A in terms of w. 3w + 20 A -------- = -------- 200 A + 12 -- What does the question mean? -- Can

    asked by Sarah
  27. Chemistry

    Two moles of pure ammonia were injected into a 2.00L flask at a certain temperature. The equilibrium mixture: 2NH3(G)-->N2(G) + 3H2(G)

    asked by Jimmy
  28. history

    I was hoping someone could write me a little a bit about their specific memories related to the Vietnam War, to Civil Rights, to the growth of feminism, to the rise of a new conservative movement, to Watergate and Nixon’s resignation, etc during the

    asked by bee
  29. College Final Project

    I need to write a paper that stems from me interviewing another...so in sorts it is a Interview Profile Report that also compares and contrasts with me answering the same questions asked. What kind of paper is this for me to format my writing with...I am

    asked by Mary K
  30. english

    what is a direct object and a subject compliment?

    asked by vero29
  31. Chemistry

    I have no clue as to how this problem should be solved... could i have some help please? Calculate the rms speed of SF6 molecules at 16°C

    asked by Lydia
  32. algebra

    please help me in this fraction add and solve 3b^3t^3/ 8d^2k^2 + 5y^2/ 2bk^3

    asked by sara
  33. algebra

    multiply and solve please i need help bad x^2-1/x-3 * 4x-12/x^2-x-2

    asked by sara
  34. MATH

    The exterior angle of a regular polygon is the angle formed by an extended side and the adjacent side. a)what is the measure of each interior angel of a regular pentagon. (There is apicture on the page and each side measures 21mm) Help please.

    asked by CAITLIN D.
  35. senior year

    does anyone know what consumer math is? i'm trying to take it for my senior year, but i'm not sure what it's about. or if i can take it after trig and algebra.

    asked by y912f
  36. Lanuage

    What is subject-verb or pronoun-antecedent for this sentence: Not one of our tomato plants are producing any fruit, but the greenbeans are thriving.

    asked by Cynthia
  37. Math

    Fing (ÝV/Ýp)_T,n given pV = nRT(1 + (B/V) + (C/(V^2)) + (D/(V^3)) ) I know how to do partial differentiation, but I have no idea how to rearrange this for V

    asked by Clare
  38. uop

    How many riders would there have to be on a bus to yield (a) a 50 percent probability that at least two will have the same birthday? (b) A 75 percent probability? Hint: Use LearningStats.

    asked by sally
  39. math

    List all the subsets of {2, o, t}.

    asked by help
  40. Pre Calc

    I need to graph the function, y = log(root 3)2x I did...now I need to graph the inverse. What is that?

    asked by MW
  41. math

    Let U = {x/x is a female} A = {x/x is a mathematician} B = {x/x owns a pickup} C = {x/x owns a dog} Describe in words a member of each of the following: _ (a) B (b) B u C (c) A - C

    asked by anonymous
  42. 7th grade

    USING THE FUNDAMENTAL COUNTING PRICIPLE TO FIND THE TOTAL NUMBER OF OUTCOMES IN EACH SISTUATIONS 1.THE TOTAL NUMBER OF TREES PLANTED IN 5 DAYS BY 30 PEOPLE ,WHO EACH PLANT 3 PLANTS PER DAY 2.TOTAL OF DISGUISES YOU CAN CREATE WITH 2 DIFFERENT CONTACT LENS 3

    asked by Anonymous
  43. algebra

    help solve this proportion u/4 = 11/17

    asked by sara
  44. maths

    whats 3(a+2)? or give me step by step guide how to expand brackets, thanks.

    asked by hassen
  45. spanish sra jmcguin

    hi- would you please look over one more time - does pedi have an accent Mis hermanos gemelos nacieron en el Hospital de Riverside en Columbus, Ohio. Uno tiene cabello negro y ojos azules. El otro es rubio con ojos verdes. Nacieron el veintinueve del año

    asked by sam
  46. spanish sra jmcguin

    hi any other suggestions i tried to get them all Mis hermanos gemelos nacieron en el Hospital de Riverside en Columbus, Ohio. Uno tiene cabello negro y ojos azules. El otro es rubio con ojos verdes. Nacieron el veintinueve del año dos mil. Estaba

    asked by sam
  47. DHJ

    WHAT IS THE RELATIONSHIP BETWEEN FRICTION AND DIFFERENT SURFACES?

    asked by Anonymous
  48. Math

    Hi, I'm really having problems with this question, can someone please help me. Thank-you! Algebraically solve for 0

    asked by Sydney
  49. chemistry

    Which of the following is NOT true about the thermodynamic standard state? A. A pure liquid is in its standard state at 25C and a vapor pressure of 1.00 atm. B. An aqueous solution is in its standard state at a concentration of 1.00 M. C. A gas is in its

    asked by jeff
  50. physics

    The Weistin Stamford Hotel in Detroit is 228 m tall. Suppose a piece of ice which initially has a temperature of o degrees celcius falls from the hotel roof and crashes to the ground. Assuming that 50% of the ices mechanical energy during the fall and

    asked by bob
  51. Algebra 1

    I need help simplifying these expressions. 1/3 + 2/x= 3/x 2/5 - 3/x=1/5x 3/x+1 - 1/x=1/2 4/x+1=3/x+2 x/x+3= x-2/x 2x^2-4x/x-2 5x/2 times 1/x 12x/5 divided by 6x/7

    asked by Meghan
  52. English

    1. His face looked familiar to me. 2. I looked familiar with his face. (Are both the same?) 3. The subject is familiar to me. 4. I am familiar with the subject. (Are both the same?)

    asked by John
  53. Chemistry

    Does the Octet rule say that atoms like to have 8 structural electrons, or eight valence electrons. I'm pretty sure it's valence, but I just wanted to check.

    asked by Tabetha
  54. science

    chemical equation for iodine and sodium bromide

    asked by colton
  55. 5th grade

    out of 100 tickets sold at a school raffle jack bought 5 mat bought 3 and jon bought 2 whats the probability each boy will win?

    asked by rebecca
  56. Science (Ocean Life)

    What is the temperature range where gulper eels live at 6000 ft. below sea level (not the top of the water)

    asked by Asunta
  57. healthcare

    can you give me a Physiology powerpoint Presentation that summarizes the processes of the digestion,respiration,and circulation.

    asked by cathy
  58. Diversity in the Classroom

    Create an At-Risk Program. What would be At-Risk Program that I can create? I need to talk about how the at-risk population will have an affect on the program serve.

    asked by B.B.
  59. spanish

    "De pequeño, ¿con qué jugabas en el patio de recreo?" "Jugaba con _____." a. el columpio y los peces b. el cajón de arena y las tortugas c. la cuerda y la verdad d. el tobogán y el sube y baja D

    asked by y912f
  60. SPANISH

    TRUE OR FALSE IN Spain, all hotels are new modern buildings The PARADORES in Spain are operated by the Spanish government Many types of accomodations are available for tourists who visit Spain i found this in my book, can someone pleaase translate it for

    asked by y912f
  61. math

    I really need help. Please help. Solve for x: log(subscript)3(3x+1)-log(subscript)3(x-1)=2

    asked by Jenna
  62. math

    List all the subsets of {2, o, t}.

    asked by help
  63. Physics

    When looking straight down on a film of oil on water, you see the color red, How thick could the film be to cause this effect? How thick could it be at another place where you see violet?

    asked by Sara
  64. Math

    Please explain ... What percent of 60 is 72? 35 is what percent of 20? Thank you!

    asked by Kate
  65. Math

    Can somone please help me with this question. Thank-you! Solve for x if 125^3x-1=25^x+4

    asked by Sydney
  66. economics

    Hi. I was wondering if someone could please tell me what states are getting the most stimulus money to stimulate new job creation? Thanks.

    asked by Leah
  67. English

    I have to write a paper on the Pseudo-Modern movement and how it relates to movie, music, artwork, an article, and a 21st century. I can't find an example for each of these cases.

    asked by Vince
  68. Science

    What keeps cheese warmer? aluminum or plastic wrap?

    asked by Katie
  69. business

    Describe the evolution of business

    asked by oz
  70. math subsets

    List all the subsets of {2, o, t}.

    asked by help
  71. social studies

    what was found in king tut's tomb

    asked by gabby
  72. English

    I have to write an essay about three 'heroes' so I chose Batman, Harry Potter, and Hercules. But I need to know what they have in common so any ideas?

    asked by Astrid
  73. social studies

    some workers specialized in fishers,tailors ,printors,or what?

    asked by rachel
  74. science

    what are the ten rescent devolopments in science?

    asked by sreehari
  75. nucleophilicity

    the more basic the the more nucleophilic?

    asked by katherine
  76. healthcare

    Use five medical words discussed in this week’s reading to create a SOAP note.

    asked by cathy
  77. Math

    How do you do this, I keep on getting 3.. There is a right triangle. One angle is 30 degrees. The hypotenuse is 24. What is the value of x, the adjacent, to the nearest whole number? a. 12 b. 14 c. 21 d. 28

    asked by Angie
  78. criminology

    According to Courtwright, criminal rates were exceedingly high in the nineteenth century before TV, movies, and rap videos had been created. What, if anything, does this say about the effect of media on crime? What were some of the other factors that

    asked by melissa
  79. Chemistry

    For one mole the ideal gas law is pV=RT , write down the exact differential dV. Would I be right to differentiate with respect to T and p separately?... V = RT/p dV = R/p - (RT)/(p^2)

    asked by Beth
  80. Technology

    Is a cellphone an electrical appliance

    asked by Tanisha
  81. physics

    Given the amplitude of a wave and the wabelength how to you find the period? The problem then goes on and asks me how to find the speed which I know how to do I just don't know how to find the period... Please show me how to do and the formulas to use

    asked by HELP ME!
  82. spanish sra jmcguin

    thank for your help you are so great

    asked by sam
  83. math

    find the 19th term to: 4,6,8,10

    asked by sally
  84. spanish

    "¿Cómo te _____ cuando eras pequeño?" "Muy mal. Siempre me peleaba con mi hermana menor." a. llorabas b. portabas c. preferías d. eras B

    asked by y912f