# Questions Asked onAugust 7, 2012

1. ## math

Your iron works has been contracted to design and build a 500-ft3 square-based, open-top, rectangular steel holding tank for a paper company. The tank is to be made by welding half-inch-thick stainless steel plates together along their edges. As the

Explain the types of Signals & Towers used in triangulation.

3. ## math

A silo is to be made in the form of a cylinder surmounted by a hemisphere. The cost of construction per square foot of surface area is twice as great for the hemisphere as for the cylinder. Determine the dimensions to be use (in terms of V) if the volume

4. ## Chemistry

Hydrogen fluoride is used in the manufacture of Freons (which destroy ozone in the stratosphere) and in the production of aluminum metal. It is prepared by the reaction below. CaF2 + H2SO4 CaSO4 + 2 HF In one process 9.00 kg of CaF2 are treated with an

5. ## math

Your company can make x-hundred grade A tires and y-hundred grade B tires a day, where 0≤x≤4 and y= (40-10x)/(5-x). The profit on each grade A tire is twice the profit on each grade B tire. Assuming all tires sell, what are the most profitable numbers

6. ## physics

A 10kg runaway grocery cart runs into a spring with spring constant 260 n/m and compresses it by 50 cm . Part A What was the speed of the cart just before it hit the spring?

7. ## Math (Geometry)

The perimeter of right triangle ABC is equal to the perimeter of isosceles triangle DEF. The lengths of the legs of the right triangle are 6 and 8. If the length of each side of the isosceles triangle is an integer, what is the greatest possible length for

8. ## physics

A mass of 100g strikes the wall with speed 5m/s at an angle of 60 and rebounds with the same speed. If the contact time is 2*10^-3 sec., what is the force applied by the wall?

9. ## public speaking

According to Aristotle, ethos refers to: A. emotions. B. logic. C. ethics. D. none of the above

10. ## math

7, -28, 112, -448, 1792,____ from the pattern what is the next number?

11. ## public speaking

Medium that carries message signals from senders to receivers of communication is: A. television. B. radio. C. channel. D. mass media.

12. ## math

If you eat 1/3 of the birthday cake and your friend eats 1/4 of the same birthday cake. Who ate more? Use pictures to explain your answer. I know that 1/3 is more. But I do not know how to draw pictures that will explain my answer. Please help.

13. ## maths

a ladder 15 meters long just reaches the top of a vertical wall. if the ladder makes an angle of 60 degrees with the wall. find the height of wall.....

14. ## physics

Two strings are adjusted to vibrate at exactly 224 Hz. Then the tension in one string is increased slightly. Afterward, three beats per second are heard when the strings vibrate at the same time. What is the new frequency of the string that was tightened?

15. ## Calculus

Find the centroid of the area bounded by the parabola y = 4 - x^2 and the x-axis. A. (0,1.6) B. (0,1.7) C. (0,1.8) D. (0,1.9) Find the average value of the function i=15(1-3^-1/2t) from t=0 to t=4. A. 7.5(1+e^-2) B. 7.5(2+e^-2) C. 7.5(2-e^-2) D.

16. ## public speaking

Early study of public speaking was known as: A. public communication. B. rhetoric. C. public relations. D. communication study.

Solve for x: 9^x-3^x-8=0

18. ## public speaking

A big ethical issue in any form of communication is: A. discussing politics. B. irrelevance. C. plagiarism. D. referring to different races.

19. ## Geography

What general statements could you make about water resources in Africa south of the Sahara? Include rainfall, rivers, lakes, and oceans.

20. ## chem

One of the reactions that occurs in a blast furnace, where iron ore is converted to cast iron, is below. Fe2O3 + 3 CO 2 Fe + 3 CO2 Suppose that 1.86 103 kg of Fe are obtained from a 5.98 103 kg sample of Fe2O3. Assuming that the reaction goes to

21. ## public speaking

Being the last of a long line of speakers refers to __________ context. A. sociopsychological B. physical C. cultural D. temporal

22. ## public speaking

You are evaluating this when you are looking for a clear, compelling message. A. Use of quotes B. Structure C. Length of speech D. Speaker commitment to subject

23. ## scien

4g of h2 and 32g of so2 are present in gaseous mixture at n.t.p the partial pressure of h2 is?

24. ## Physics

A cart is coasting at a speed v A along a straight and level road. When ten percent of the wagon’s mass is thrown off the wagon, parallel to the ground, and in the forward direction, the wagon stops. However, if this same amount of mass is thrown out the

25. ## Calculus

Find the area under one arch of a cycloid describe by the parametric equations x=3(2Theta - sin 2Theta) and y= 3(1-cos2Theta). Use 0 and pi for the limiting values of Theta. A. 9Pi B. 18Pi C. 27Pi D. 36Pi Find the area in the first quadrant bounded by the

26. ## algebra/trig

1. which number below is irrational? a)√4/9 b) √20 c)√121 Why is the number you chose irrational? 2. express in simplest form: √48-5√27+2√75 3. solve for x: (√x+2)-3=0

27. ## math

In a scaled drawing 1/3 of an inch represents 6 feet how many inches represent 54 feet

28. ## earth

A distant galaxy is simultaneously rotating and receding from the earth. As the drawing shows, the galactic center is receding from the earth at a relative speed of uG = 1.7 x 106 m/s

29. ## health

What is the most likely route that midlife adults will take in their quest for a sense of generativity?

30. ## Science

Describe 2 structures of a plant that help it survive living on the land.

31. ## Math

A professional basketball team has won 50 out of the 75 games played so far.The team still has 45 games to play.How many of these games must the team play in order to have a season record of winning 60% of the games played?

32. ## public speaking

Which is NOT a benefit of studying public speaking? A. Creates good first impression on others B. Communicates competence C. Proves our expertise D. Develops our ability to communicate ideas and message clearly and with impact

33. ## writing

10. In which of the following sentences do you find a verb phrase? A. The crowed roared as the bull charged. B. I shall be all that I am and more. C. June was a collector of memorabilia. D. I believed every word he said

34. ## Calculus

Find the length in the first quadrant of the circle desribed by the polar equation r = 2sin theta + 4 cosTheta. The circle is graphed in the accompanying figure. A. (Square Root 2)Pi B. (Square Root 5)Pi C. 2Pi D. 5Pi

35. ## Math

Shelly delivers the weekly local paper to neighborhoods in her town. House numbers are even on one side of the street and odd on the other. Shelly delivers an equal number of papers to both sides of the street. Although she always aims for the front

36. ## Maths

Find the equation of the locus of the point P(x,y) which moves so that it's distance from the point (0,3) is equal to its distance from the line y=-3 Show that the point (-6,3) lies on the locus Please help me with thisand also show working out

37. ## health

what is implied by the statement "growth and development are predictable yet unique"?

38. ## math

Sophia runs twice as fast as her friend Mia. Mia runs 3 mph. How long will it take Sophia to run 6 miles? 9 miles? 6x6 = 36 9x6 = 54 Am I right? If I am not, please help me with the right answer. Thanks

39. ## public speaking

In a world of ____________, communication skills help us to interact with people whose backgrounds are different from our own. A. careers B. changes C. technology D. personal relationships

40. ## math

Draw a square, triangle, rhombus, and pentagon. Identify the types of line segments that make each shape (parallel, perpendicular, intersecting). List the total number of angles in each shape. I do not get anything besides the part when I need to draw

41. ## Chemistry

How many gallons of water would it take to fill a 50m by 25 m by 1.5m pool? (1 Liter is 0.001m^3 and 1 gallon is 3.786 Liters)

42. ## writing project

Your aunt arrives with a huge box. You hear strange noises coming from the box. Write a story about what’s inside. what i wrote: every monday, my aunt would come and visit me.everytime my aunt visits me, she would always have something special for me.

43. ## Chemistry

Complete the following chemical reaction. Label any precipitate that forms. KCl(aq) + AgNO3 (aq) ¨KNO3 (aq)+AgCl(s)

44. ## Math

The owner of a large company is conducting a survey about job satisfaction, including questions about salary, hours, stress, and other conditions. There are about 800 employees in the company, including 100 executive positions, 650 middle-management

45. ## math

My question is how do I estimate the product of 8.99 by 11.

46. ## College Algebra

Using the 7 steps outlined in section 4.3 of your book, analyze the graph of the following function: R(x) = x^2 - 49/x^4 - 16 Step 1: Factor the numerator and denominator of R and find its domain. If 0 is in the domain, find y-intercept, R(0), and plot it.

47. ## English 1

Where can I get a good plot summary of Gary Soto's "Buried Onions?"

48. ## em

Answers for Two Forces Act At Angle Of 120 Degrees The Bigger Force Is 60 Degree M And Resultant Is Perpendicular To The Smaller One Find The Smaller Force

49. ## Calculus

evaluate (integral) xe^2x dx A. 1/6x^2 e^3x+C B. 1/2xe^2x-1/2e^2x+C C. 1/2xe^2x-1/4e^2x+C D. 1/2x^2-1/8e^4x+C Evaluate (integral) e^3x cosh 2x dx A. 1/2e^5x + 1/2e^x +C B. 1/10e^5x + 1/2e^x + C C. 1/4e^3x + 1/2x + C D. 1/10e^5x + 1/5x + C

Explain the factors on which choice of pying.roper contour interval depends in topographic surve

51. ## math

a spherical fishtank has radius of 25 cm. The tank is filled with water with a depth of 20 cm. By using integral find the volume of the water inside the tank.

52. ## Physics

A 5.0 kg shell is fired vertically upward. At its max height of 350.0 m, it explodes into 3 pieces. A 1.0 kg chunk lands 15.0 m away, 45 O due northeast from the launch site. A second 1.0 kg piece lands 25.0 m, 60 O south of east from the launch site. If

53. ## Writing

I need to write the top ten reasons I am happy to be back in school. (6th grade). What would you write?

54. ## health

the best physical activity is one that is_______ A enjoyable enough to bring along a snack. B enjoyable enough to be lulled to sleep C enjoyable enough to do regularly D all of the above __?

if a

56. ## literacy

10. A quick way to get the definition of "mensa" when working on the Internet would be to type

57. ## Math

The owner of a large company is conducting a survey about job satisfaction, including questions about salary, hours, stress, and other conditions. There are about 800 employees in the company, including 100 executive positions, 650 middle-management

58. ## compensation

how can describing a present value of a stream of earnings be used to help a possible new hire overcome objections to a small starting salary

59. ## measurments

which has the least value? 3130 L+38126 cl+ 3403 ml 394 kl+ 1425 Kl+ 490L please show work!

60. ## math

a merchant buys 2 quantities of rice at Rs60 and Rs40 per kg respectively .He pays a total of Rs 1000.On the other hand he paid a flat rate of Rs 500 per kg.He would have paid 10% more.How many kg of each type of rice did he buy?

61. ## math

Ms.Sue is the answer to estimating the product of 8.99 by 11 ,99.00 Just so you now I am learnig,I have an A 100 percent on two math quizes and 1 math test. In one whole week!!!!! By the way I'm 13 years old. Thanks to you I have a break from washing

62. ## Learning

Tom has difficulty battling distractions while studying. Which of the following strategies would help him with this problem? A. Taking notes that keep him focused. B. Improving his study environment. C. Adding positive messages to his study area. D. Both B

63. ## poetry

What does this poem mean? AMOK by Fatima Lin wilson He weaves his wife's limbs With those of her startled lover's. His sight grows dim as the flowered Sheets darken. His ears pound with heart's Hooves, the hoots and footstomping Of drinking mates who swear

64. ## Calculus

Evaluate the following integral integral 1 = a and b = 4 of sinx dx/(1+cos)^2 u = cosx du = -sinx dx so from here I don't know if I can do: -1 du = sinx dx or 1/sin du = x dx

65. ## Elementary Algebra

How do I figure out whether or not (-1,-2) is a solution for the system. y=3x-1 2x+y=4

66. ## Physics

A missile launcher, mass M, at rest on a horizontal track fires a missile, mass m, horizontally. a) If the launch speed of the missile is v o , what (effective) coefficient of (kinetic) friction is required in order to stop the launcher within x meters?

67. ## Physic

What is the source of the sun's energy?

68. ## physics

An 80 kg man on a 10 kg stretcher is being pulled upward with constant speed. What is the tension on the rope ?

Solve for x: 9^x-3^x-8=0

70. ## social studies

In a famous speech, William Jennings Bryan said/did what?

71. ## math

Figure your age in months, days and hours. since I am 9 years old I found out that i am 117 months, 3,563 days and 85,512 hours. The problen is that I do not know how to show my work. Please respond soon.

72. ## english

is it one of the parts of speeches or one of the parts of speech pl explain

73. ## math

Determine the pattern: What comes next? .1, 1, 2, 4, 7, _ .4, 9, 16, 25,_ Explain. I need help explaining. Thank you.

74. ## Organic chem

i have no idea how to do this! please help me :) 1a. When sodium benzyloxide is reacted with excess acetic anhydride it produces benzyl acetate and byproducts. What are those byproducts? If extracting with dichloromethane, what could be added to the

75. ## statistics

using excel to simulate probablilty, what uncertainties about the results would exist?

76. ## Calculus

(integral) e^3x dx A. e^3x+C B. 1/3e^3x+C C. e^4x+C D. 1/4e^4x+C Evaluate (integral) dx/(Square root 9-8x-x^2) A. sin^-1(x+4/5)+C B. sin^-1(x-4/5)+C C. Ln(Square root 9-8x-x^2)+C D. Ln(-8-2x)+C

77. ## Trigonometry

Given the rectangular-form point (–1, 4), which of the following is an approximate primary representation in polar form? A. −(4.12, 1.82) B. (−4.12, −1.33) C. (4.12, 1.82) D. (4.12, 4.96) Change 8 cis 240degrees to rectangular form. A. -4(Square

78. ## cfemistry

what is the lewis structure of c3h502 and the formal charge?

79. ## theater

in terms of theater what is the quote "act well your part" by alexander pope: 1)refer to 2)means

80. ## question

You are a squad leader with the “Sapper” platoon, Special Troop Battalion, 3d Brigade, 10th Mountain Division. Your unit is deploying to Iraq to conduct operations in support of Operation Iraqi Freedom. One of the critical tasks in preparation for your

81. ## math

Ms. Sue thanks for answering, I was getting worried.

82. ## Plis solve it using step by step! Logarithms.

Solve for x: 9^x-3^x-8=0

83. ## Calculus - Verification

Hello, I just wanted to verify this definite integral and if my answer is good: a = 1 and b = 4 integral of (1 - 1/x^2)(x^2 + 1/x) dx = (x + 1/x)(x^3/3 + lnx) + C (4 + 1/4)(64/3 + ln4) - (1 + 1)(1/3 + ln1) = 96.56 - 0.6666 = 95.89 THank you

84. ## help

What action should a leader in the Army take when a soldier leaves a thumb drive in the computer that has critical information?

85. ## Trigonometry need help!!!

need help don't understand how to do this.... 1.Verify the identity cot(θ-( π/2)= -tan θ 2. Verify the identity tan θ + cot θ =1/sin θ cosθ

86. ## Math

HOW to estimate problems

87. ## algebra/trig

1. f(x)=x^3+5 does f(x) have an inverse? if so, find the inverse and decide if it is a function. 2. if f(x)= 3x+1 and g(x)= x^2-1, find (f∙ g)(2) 3. if f(x)= (2x)^2, find f(-4) thank you :)

88. ## Physics

A 140 g, 90.0 mph fastball comes across the plate very nearly horizontally and is batted at 90.0 mph at a 30.0O angle (above the horizontal) toward center field. (a) Determine the impulse (in N.s) acting on the ball. (b) If the impact time is 0.00080 s,

89. ## math

I tried multiplying 365*9 and also I tried 24*9 but it is not close to what I said abot the days being 3,653 and the hours being 85,512. Please help me. Thank you.

90. ## math

how to make a math problem of 8in long + 6in around

91. ## Math

If the average of 10 numbers is 10 and the sum of five of the numbers is -25 what is the average of the other 5 numbers?

92. ## am i right?

I just want to make sure im right. I wanted to know if the windows on the dome of the Ibn Tulun are arched? If you need pics go to yah oo and type in Mosque of Ibn Tulun Dome and go to images.

93. ## reed

What is ecumenical worship and ecumenical prayer?pleassssse.thanks

94. ## math

I still need to show my work for the days and years please help me. Thank you.

95. ## math

I am nine years and eight months old.

96. ## math

Determine the pattern: What comes next? .1, 1, 2, 4, 7, _ .4, 9, 16, 25,_ Explain. I need help explaining. Thank you.