# Questions Asked onMay 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

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

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?

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

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

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

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

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

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

10. ## geometry

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

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?)

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

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

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

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

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

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

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

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.

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?

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

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

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?

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

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

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

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)

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

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

30. ## english

what is a direct object and a subject compliment?

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

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.

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.

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.

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

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.

39. ## math

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

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?

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

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

43. ## algebra

help solve this proportion u/4 = 11/17

44. ## maths

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

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

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

47. ## DHJ

WHAT IS THE RELATIONSHIP BETWEEN FRICTION AND DIFFERENT SURFACES?

48. ## Math

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

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

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

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

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?)

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.

54. ## science

chemical equation for iodine and sodium bromide

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?

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)

57. ## healthcare

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

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.

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

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

62. ## math

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

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?

64. ## Math

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

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.

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.

68. ## Science

What keeps cheese warmer? aluminum or plastic wrap?

70. ## math subsets

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

71. ## social studies

what was found in king tut's tomb

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?

73. ## social studies

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

74. ## science

what are the ten rescent devolopments in science?

75. ## nucleophilicity

the more basic the the more nucleophilic?

76. ## healthcare

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

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

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

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)

80. ## Technology

Is a cellphone an electrical appliance

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