# Questions Asked onMarch 3, 2008

1. ## Physics

Why do older people who do not wear glasses read books farther away from their eyes than younger people do?

2. ## Chemistry

How many grams of ice could be melted by the energy obtained as 18.0 grams of steam is condensed at 100.0 degrees celcius and cooled to 0.0 degrees celcius?

3. ## Physics

The drawing shows a baggage carousel at an airport. Your suitcase has not slid all the way down the slope and is going around at a constant speed on a circle (r = 11.2 m) as the carousel turns. The coefficient of static friction between the suitcase and

4. ## physics

1.6 Determine the maximum weight of the flowerpot that can be supported without exceeding a cable tension of 50 lb in either cable AB or AC. Note that the 2 cables make an angle 60 and 53.1 respectively with the horizontal

5. ## Physics

A block oscillates on a spring and passes its equilibrium position with a speed of .157m/s. It's kinetic energy is zero when the block is at the distance of .1m from equilibrium. Assume no friction between the block and the table. v=.157m/s KE =0J when

6. ## Nuclear chem

electron decay transforms 40 K 19 into what nuclide?

7. ## Physics

Upward rays of light in water toward the water-air boundary at angles greater than 48 degreees to the normal are totally reflected. No rays beyond 48 degrees refract outside. How about the reverse? Is there an angle at which light rays in air meeting the

8. ## Physics

A coil of wire with 200 circular turns of radius of 3 cm is in a uniform magnetic field along the axis of the coil. the coil has R=40 ohms. At what rate, in Teslas per second, must the magnetic field be changing to induce a current of .150 A in the coil? I

9. ## Physics

A closely wound rectangular coil of 80 turns has dimensions of 25 cm by 40 cm. The plane of the coil is rotated from a position where it makes an angle of 37 degrees with a magnetic field of 1.10 T to a position perpendicular to the field. The rotation

10. ## Physics

The images produced by a converging camera lens are upside down. Does this mean the photographs taken with the cameras are upside down?

11. ## Math

USE THE INFORMATION TO DECIDE IF TRIANGLE ABC IS ACUTE, RIGHT, OR OBTUSE AC = 13 BC = sq rt. 34 CD = 3 I know the answer is obtuse but I don't know how to get there. The sq rts threw me off

12. ## physics

The speed of a sound in a container of hydrogen at 201K is 1220m/s. What would be the speed of sound if the temperature were raised to 405K? Assume that hydrogen behaves like an ideal gas. Please guide me to do it. Thanks!

13. ## Science

What term refers to the sum of all of the forces acting on an object?

14. ## Geometry

Two ships leave San Francisco at the same time. One travles 40 degrees W of N at the speed of 20 knots. The other travels 10 degrees W of south at a speed of 15 knots. How far apart are they after 11 hours?

15. ## non fiction

what did thoreau have in common with john thornton in "the call of the wild"

16. ## english

a blessing, james wright Just off the Highway to Rochester, Minnesota Twilight bounds softly forth on the grass. And the eyes of those two Indian ponies Darken with kindness. They have come gladly out of the willows To welcome my friend and me. We step

17. ## drivers ed

I have to do a project and its for my drivers ed class. I chose to do Cell Phones and Driving. I need website sources but when I search for them I keep getting a bunch of articles talking about how that certain state or city has a new law banning cell

18. ## english

last time, i promise a blessing, james wright Just off the Highway to Rochester, Minnesota Twilight bounds softly forth on the grass. And the eyes of those two Indian ponies Darken with kindness. They have come gladly out of the willows To welcome my

19. ## HCA 230

I am having difficulty finding the implications to health care providers considering cultural views on the following topics, health as organic, health as harmony and disease as a curse or stigma. I tried the school library and I am hitting a brick wall.

20. ## Math

State the number of positive real zeros, negative real zeros, and imaginary zeros for g(x)= 9x^3 - 7x^2 + 10x - 4. The only thing I know is that there are 3 sign changes.

21. ## Math

List all of the possible rational zeros of f(x)= 3x^5 - 7x^3 + 2x - 15. p= factor of 15 q= factor of 3 1,3,5,15 1,3 answer is 1,3,5,15,1/3,1,5/3,5

22. ## Chemistry

I am supposed to create a "possible" mechanism for the reaction 2A + B --> 2C when the rate law is Rate=k[A][B]^2. This mechanism can include any letters (but must obviously include As, Bs, and Cs). Preferably it should be 3 or more steps including at one

23. ## Math

f(x)= 3x and g(x)= 4x - 3, find f[g(5)] and g[f(5)]. [3(5)] = 15 4(5)-3 20-3 = 17 so f(x)= 15 and g(x)= 17

24. ## AP Chemistry

How many grams of benzoic acid, a monoprotic acid with a Ka=6.4x10 to the negative 5, must be dissolved in 500.0 mL of water to produce a solution with a pH=2.50?

25. ## Writing

can anyboody give me a sentence with the word desperate

26. ## Quizzes biology

Hello, my teacher has once said that she gets all of her quizzes from the internet, but I can't find the site. Does anyone have any idea as to where grade 12, hard, biology quizzes may come from? The quizzes are brutal, and it would so great if I could see

27. ## Math

Find the inverse of f(x)= 7x-2. y = 7x - 2 x = 7y - 2 7y/7 = x - 2/7 = f^-1(x)= (x - 2)/7

28. ## chemistry

I have 3 questions that I am uncertain about. 1) what determines the order in which the coumponent elements of binary molecular compounds are written? 2) Name the Binary compound according to the prefix system for As2O5 3) write the formula for each of the

29. ## human services

How are data and information used within the human services organizations to support organizational planning?

30. ## Trig

Hi. Can somebody help me solve this equaton with EXACT answers? ----- sin3x = 0 ----- Thankyou! All help is appreciated.

31. ## Writing

Can anybody give me a sentence with the word lured??

32. ## eletronics

what are characteristics of a Beta dependent common emitter amplifier?

33. ## algebra

how would you describe a dead skunk

34. ## psychology

Mira is a college student who lives alone in an apartment with her cat, Max. Whenever Mira walks into her kitchen and opens the squeaky drawer where Max's food is kept, he begins to salivate and runs into the kitchen, pawing at Mira to be fed. Even when

35. ## speech help: quotes

I'm trying to find quotes for my speech. One point i'm saying in my speech is that the gas supply is going down, so gas prices will always increase, because people demand it. I was wondering if there's a quote by a person that says something familiar to

36. ## Physics

A boat is at a point 120km West and 60km South of its destination. It sails in water which has a current of 20km/h North. In order to arrive at the destination, the captain decides to head the boat due East at 50km/h until he reaches a point due South of

37. ## biology

what is the name of a cell that secretes digestive enzymes in a hydra

38. ## history

What was the Estates-General?

39. ## chemistry

how is the endpoint estimated using potentiometric if no chemical indicator is added to the analyte solution?

40. ## chemistry

can u see if i did this right because i highly doubt i did name each of the following acids: a) HF i put Hydrogen fluoride b) HBr i put hydrogen bromide c) HNO3 don't know this one d) H2SO4 didn't know this one either e) H3PO4 i put Hydrogen phosphoric

41. ## history

What u.s. city is best know for it's cobblestone streets?

42. ## English

How can you improve this phase... "For it was the end of our vacation"...i think it sound kind of bad or chessy...

43. ## Science

Could you tell me 6 diffrent types of Acids and Alkalines ?

44. ## physics

In astronomy, distances are often expressed in light-years. One light-year is the distance traveled by light in one year. The distance to Alpha Centauri, the closest star other than our own sun that can be seen by the naked eye, is 4.7 light-years. Express

45. ## Nuclear Chem

the nuclide 232 Th 90 is radioactive. when one of the atoms decays, a series of alpha and beta particle emission occurs, taking the atom through many transformations to end up as an atom of 208 Pb 82. How many alpha particles are emitted in converting 232

46. ## math

find the area of the region described: shared by the cardiods r = 2(1+cos theta) and r = 2(1-cos theta)

47. ## math a2

the expression 4x3-6x2 represents the area of a triangle. write the expression as the product of two factors. 4x3-6x2 as in: FOURx 3(power) -(minus) SIXx 2(power)

48. ## Physics

When the rearview mirror in a car is tilted slightly upward to the "nighttime" position, glare is directed upward toward the ceiling, away from the driver's eyes. Yet, the driver can still see cars behind in the mirror. Explain.

49. ## Physics

A person in a dark room looking through a window can clearly see a person outside in the daylight, whereas the person outside cannot see the person inside. Explain.

50. ## Chemistry

using kinetics explain: a.the increasing of concentration of reactants increases the rate of reaction. b.the addition of a catalyst increases the rate at which a reaction will take place. c.and increase in temperature increases reaction rate. d.a catalyst

51. ## math

what does trigonometry mean?

52. ## math a2

the expression 4x3-6x2 represents the area of a triangle. write the expression as the product of two factors. 4x3-6x2 as in: FOURx 3(power) -(minus) SIXx 2(power)

53. ## math a2

the expression 4x3-6x2 represents the area of a triangle. write the expression as the product of two factors. 4x3-6x2 as in: FOURx 3(power) -(minus) SIXx 2(power)

54. ## math a2

the expression 4x3-6x2 represents the area of a triangle. write the expression as the product of two factors. 4x3-6x2 as in: FOURx 3(power) -(minus) SIXx 2(power)

please check my answer thank you very much :) Which health insurance program is designed to complement the retirment survivor , and disability insurance enacted under the Title II of the Social Security Act? I think the answer is Medicare

56. ## Physics

What exactly are you seeing when you observe a "water-on-the-road" mirage?

57. ## Physics

When your eye is submerged in water, is the bending of light rays from water to your eyes more, less, or the same as in air?

58. ## textiles

which british designer grew up in a doctor bernardo's home

59. ## Physics

Why can't you take a photograph of your image in a plane mirror and focus the camera on both your image and on the mirror frame?

60. ## Physics

On October 15, 2001, a planet was discovered orbiting around the star x. Its orbital distance was measured to be 10.5 million kilometers from the center of the star, and its orbital period was estimated at 6.3 days. a. What is the mass of x? b. Express

61. ## Algebra

I tried writing an equation to the following. It was not coming out the way the book siad it should. When you travel at a speed of 60 MPH, write an equation that represents how far youwill travel in X hours? Let each unit represent 1 hour on the X scale

62. ## Chemistry

1. The percentage of a composition is equal to ???. 2. A compound's molecular formaul is numerically equal to its ??? Help!! Thanks =]

63. ## finance

what is meant by "level of accounts payable"

64. ## Physics

A guitar string is .75m and has a mass of .005kg. A standing wave is produced when the string is plucked. a) what is the fifth harmonic if the tension in the string is 90N? v=sqrt(F_t/mass density)= 116m/s f1=v/2L = 116m/s/(2*.75m) =77.3Hz fn=n*f1

65. ## Physics

A violin string is .32m and has a mass of .0005kg. The freqency of the note played is 440Hz. What is the speed of the wave in the string? .5*wavelenght = L wavelength= 2*.32m =.64m v=f(wavelength) =440hz*.64m =281.6m/s b) where must one put one's finger to

66. ## English

Can someone please proofread this or give me suggestions on how to improve it? Flannery O'Connor's short stories often have similarities. Two of O'Connor's short stories, "The Lame Shall Enter First" and "A Good Man is Hard to Find" share similarities and

67. ## Math

Use substitution to solve the linear system. 3x+4y=27 y=x-2

68. ## Physics

A proton follows a spiral path througha gas in a magnetic field of .010 T , perpendicular to the plane of the spiral.In two successive loops, at point P and Q, the radii are 10.0mm and 8.5 mm,respectively.Calculate the change in Kinetic energy of the

69. ## Behavioral Science

I have a assignment du and kind of confused after reading the text the assignment is write 700- to 1,050-word essay in which you compare and contrast the influence of heredity and hormones on human behavior. I am not sure exactily how to start this paper

should a non-profit organization pay lawyers the same as a large law firm? just because both workers are lawyers are they entitled to equal pay like other lawyers i their industry?

71. ## religions

I need to choose one religion to write on, Judaism, Islam, or Hinduism. Which one has more information on the net and easier to write?

72. ## american government

what is a member of congress immune from when the House and Senate is in session and whe he is going to or returning form House or Senate meetings?

73. ## chemistry-conversion

when converting micromoles to moles: the way i do it is this way: 1 micromole X 1/10^-6 = 1X10^6 mole. lately i have been seeing it done this way: 0.000001 and you just move the decimal point over to the right 6 place to get 1 mole. these are different

74. ## englsih

Just off the Highway to Rochester, Minnesota Twilight bounds softly forth on the grass. And the eyes of those two Indian ponies Darken with kindness. They have come gladly out of the willows To welcome my friend and me. We step over the barbed wire into

75. ## Spanish

I have to do a Spanish News report and weather report. I have No idea how to write these thigs in spanish, I need help. How do you write a news report in very simple spanish words? (This is my first year in Spanish!) HELP!! Thanks, Taylor

76. ## Math

A rocket is launched upward and then falls to the ground. The height of the rocket above the ground is h= -16t^2 - 400t where h is the height of the rocket in feet and t is the number of seconds of the flight. How many seconds will it take for the rocket

77. ## Shiv

Randall is playing a game that involves drawing a card from a deck. There are 10 cards numbered from 1 to 10. If Randall draws a card with a multiple of 3, he wins 5 points. If he draws any other card, he loses 3 points. What is Randall's expected point

78. ## Chem

What is the formula mass in amu of KNaC4H4O6 *4H2O Is it 282.09 amu? What is the charge on the tartrate anion? How do I do this?

79. ## music history

what are the defonitions of these words;sampler,stithesier,vocoder and microphone?

80. ## language arts

i need to unscramble a word and i cannot get this one. dromtahrnge

81. ## Physics

The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 106 m, determine the speed and centripetal acceleration

82. ## Math

If I have the problem; m+24=3. How do I figure that out?

83. ## English expression

A. What is the reading text about? a. School Introduction b. Family Introduction c. Self Introduction B. Draw a line between what we can know from the reading text as in the example. And referring the reading text, fill in the blanks. O. What is her

84. ## Physics

A* B* C* D* square of side 10 cm I tried my best to do the drawing. It is supposed to be a square, but each * is a point. The sides are 10 cm long. The problem asks for you to find the magnitude and the direction of the net gravitational force on mass A

85. ## Chem

How many moles of copper sulfate, CuSO4 are in a o.671 g sample? How do I start on this?

86. ## math

what does trigonometry mean?

87. ## Algebra

how do u factor out 2x^3 - 5x - 3

88. ## Math

Your group buys a box of Mylar balloons with zoo animals printed on them for $10 and decides to sell the balloons for$2 each. What is your profit if your group sells 30 balloons?

89. ## Speech

Why is dialect important to effective public speaking?

90. ## science

what can you use to decide whether liquids tested are polar or nonpolar?

91. ## Geometry

1. The sides of a triangle have lenghts x, x+4, and 20. Specify those values of x for which the triangle is acute with the longest side 20. 2. use the information to decide if triangle ABC is acute, right, or obtuse. AC=13, BC= sq. rt. 34, CD=3 >>i know

92. ## Physics

A satellite is placed in orbit 7.70 105 m above the surface of Jupiter. Jupiter has a mass of 1.90 1027 kg and a radius of 7.14 107 m. Find the orbital speed of the satellite.

y=x-2 y=2x

94. ## Reiny

Solve: -x^4 + 200 = 102x^2 I know the last line was wrong I just took a guess on factoring it out. I just knew how to do the first 2 lines. The problem has no typos it is -x, its crazy but that's how it is in my book. how does that change the answer? "Your

95. ## science

What is the formula for velocity??

96. ## math (geometry)

What is a good website that can help me with geometry?

97. ## Math(solving a quadratic by factoring)

Ok I get most of the problems except for these last two. x^2-16=0 and x^2=36 I seem to have trouble with the simplest of problems and none at all with the hard ones.

98. ## Algebra II

Use synthetic substitution to find f(-3) for f(x) = 2x^3 - 6x^2 - 5x + 7. _3|2 -6 -5 7 6 36 93 ______________ 2 0 31|100 then I used direct substitution and just plugged -3 in for x and the final answer is f(-3) = 86

99. ## Math - Calculus

The identity below is significant because it relates 3 different kinds of products: a cross product and a dot product of 2 vectors on the left side, and the product of 2 real numbers on the right side. Prove the identity below. | a × b |² + (a • b)² =

100. ## Physics

I have tried to solve this problem in multiple ways, but i keep getting it wrong please help A 48.0 {\rm kg} ice skater spins about a vertical axis through her body with her arms horizontally outstretched, making 1.50 turns each second. The distance from

101. ## Algebra II

One factor of f(x) = x^3 + x^2 -22x - 40 is x + 4. Find the other factors. I got confused on my work but I ended up with x - 6 and x + 1 as the remaining factors

102. ## english- adrienne rich and othello

I was wondering if anyone had any ideas or any type of thesis statements I could use for the following essay topic: Discuss women in Othello- Desdemona, emilia, Bianca- from the point of Adrienne rich. In what ways is each a victim of patriarchy? I thought

103. ## english

what is a suffix

104. ## Spanish

how do you say when

105. ## astronomy

on a domestic gas cooker the temperture in the hottest part of the flame is about 2200k.if salty eater is spilled in the flame then it becomes yellow-orange.measurements with a spectrometer show the presence of an emission line at 589n. 1) the solar

106. ## astronomy

why is it necessary for ultrviolet telescopes to be placed on a space-based platform? thanks

107. ## Accounting

If you are thinking about buying common stock in a company and the company has preferred stock outstanding, what do you want to know about that preferred stock? And where will you find that information?

108. ## Accounting

When a corporation issues common stock what is the impact on the financial statements (assets, liabilities, stockholders' equity, and net income) and on the following financial ratios: Current ratio, ROA, and ROE?

109. ## Science

If a wave has a velocity of 40 meters/second and a frequency of 120 Hz, what is its wavelength in meters?

110. ## math

Find the product of (4de^2)^3 (de)^4? 2. Find an equation of the line containing the points (-4,-7) (1,-10) How do you solve this?

142. ## Chemistry

Calcium carbonate is an ionic compound. Propose an explanation for the solubility of calcium carbonate.

143. ## math

what is the answer to this in scrabble, 2 of the 100 tiles are blank find the probability of drawing a blank tile from an entire set of scrabble tiles instructions find each probability. write your answer as a fraction, as a decimal, and as a precent thank

144. ## science

what basis can you use to decide whether liquids tested are polar or nonpolar?

145. ## Writing

I need a sentence with the words "loose" and "folklore"? Help?

146. ## Math

Open Ended Nick is starting college in the fall. She has purchased a Star Phone card for \$30.00for long didtance calls. The calls cost 10 cents per minute nation wide during the daytime, 6 a.m - 6 p.m and 5 cents per minute nationwide at night, 6 p.m-6a.m.

147. ## language arts

instructions read the paragrahs below. on your own or with a partner, write the topic and the man idea of each. Then write two possible opinion statements for each paragraph opinion statment. First members of the student council learn important

148. ## Science

State in words how acceleration is calculated.

149. ## Science

If the net force on an object is zero, what do you know about all of the forces acting on the object?

150. ## english

Which of the following is the best opening sentence for a business letter that you want to sound fairly informal

151. ## Math

what is the area of a circle with a diameter of 16meters?