# Questions Asked onJuly 29, 2013

1. ## math

If shipping charges to certain point 62 cents for the first five ounces and 8 cents for each additional ounce, the weight of a package, in pounds, for which the charges are \$1.66 is not just an answer please A.7/8 B.1 C.1 1/8 D.1 1/4 E.1 1/2

2. ## statistics

The length of country and western songs is normally distributed and has a mean of 200 seconds and a standard deviation of 30 seconds. Find the probability that a random selection of 9 songs will have mean length of 186.30 seconds or less. Assume the

3. ## chemistry

The density of a 60% (m/m) ethanol solution 0.8937g/ml , calculate the molarity of the solution , step by step . Molar mass of ethanol = 46.07

4. ## physics

During a hard sneeze, your eyes will shut for 0.5 s. If you are driving a car at 90 km/h during such a sneeze, how far does the car move during that time?

5. ## math

In a 3 hour examination of 350 questions, there are 50 mathematics problems. If twice as much time should be allowed for each problem as for each of the other questions, how many minutes should be spent on the mathematical problems? not just and answer

6. ## math

One wheel has a diameter of 30 inches and a second wheel has a diameter of 20 inches. The first wheel traveled a certain distance in 240 revolutions. In how many revolutions did the second wheel travel the same distance? not just an answer please A.120

7. ## Chemistry help

2.00g of NaOH are dissolved in water to make 2.00L of solution. What is the concentration of hydronium ions, [H3O+], in this solution?

8. ## physics

A 5-kg block of ice is at a temperature of -27 °C. How much heat must be added to the ice to produce 5 kg of liquid water with a final temperature of 35 oC?

9. ## bussiness math

Angela Hatcher is planting flower bulbs in her garden for this coming summer. She intends to plant 1 bulb for every 5 square inches of flower bed. How many flower bulbs will she need for an area measuring 230 square inches? (Points : 2)

10. ## physics

An SUV with a mass of 1.80×103 kg is travelling eastbound with a speed of +15.0 m/s, while a compact car with a mass of 9.00×102 kg is travelling westbound at -15.0 m/s. The vehicles collide head-on and stick together. What is the speed of the wreck

11. ## physics

Suppose you are stopped for a traffic light, and a fast ambulance approaches you from behind with a speed of 34.0 m/s. The siren on the ambulance produces sound with a frequency of 960 Hz. The speed of sound in air is 343 m/s. What is the wavelength of the

12. ## physics

A 2.0-m-tall basketball player is standing on the floor a distance d from the basket, as shown in the figure below. He shoots the ball at an angle of 40.0o above the horizontal with a speed of 10.67 m/s and makes the shot. The height of the basket is 3.05

13. ## physics

A rocket is used to place a satellite in orbit about a planet. The velocity of the satellite is 534 m/s and the radius of orbit is 1.21×108 m. What is the mass of planet?

14. ## physics

Socola and Brooke are balanced on a teeter-totter plank as shown below. Socola has a mass of 7.7 kg, and Brooke’s mass is 53 kg. Brooke is located 1.0 m from the pivot. Assume the plank is massless, and calculate how far Socola is from the pivot (x).

15. ## QMB2100

Chicken Delight claims that 90 percent of its orders are delivered within 10 minutes of the time the order is placed. A sample of 70 orders revealed that 60 were delivered within the promised time. At the .02 significance level, can we conclude that less

16. ## physics

What is the absolute pressure at the bottom of a storage tank of oil 18-m deep that is open to the atmosphere? Take the density of oil to be 800 kg/m3.

17. ## Math

A corporation has 7 members on its board of directors. How many different ways can it elect a president, vice president,secretary, and treasurer?

18. ## math

thirty animals are to be used in a medical experiment on diet deficiency: 3 male and 7 female rhesus monkeys, 6 male and 8 female dogs. If one animal is selected at random, what is the probability of getting a chimpanzee or a dog?

19. ## physics

If the input piston of a hydraulic jack has a radius of 0.005 m, what force is necessary to apply to it to lift a 1500-kg car on the output piston whose radius is 0.5 m?

20. ## physics

A cube of balsa wood (side length = 0.25 m) is tied with a string to the bottom of a waterfilled container. The wood is completely immersed. What is the tension in the string?

21. ## nutrition

Which of the following diets provides approximately 18% of the total Calories (kcal) from fat?

22. ## English

What are the stories that go with each of the tools that Sanders discusses in his essay "Inheritance of Tools?" I don't really understand what the question wants, so I started by saying the history of the hammer. What can I write about the other tools?!

23. ## physics

The angular speed of the rotor in a centrifuge decreases from 226 to 186.0 rev/s with an angular deceleration of 6.4 rev/s2. During this period, how many revolutions does the rotor turn?

24. ## physical science

During the stage of internal combustion engine operation in which the piston rises and compresses the fuel in the combustion chamber,

25. ## physics

A projectile is launched over level ground at a launch angle of 70o with an initial velocity vo. At some later time while the projectile is on its way to the peak in its trajectory, its velocity vector makes an angle of 50o with respect to the horizontal.

26. ## Calculus--Steve plz?

Find the inverse Laplace transform of the function: F(s)=1/(s(s+1)(s+2)) ...A special thank you to Steve who has already been a tremendous help! Thank you so much =)

27. ## Physics

A wire is bent into the shape of an planar Archimedean spiral which in polar coordinates is described by the equation r=bθ. The spiral has N=100 turns and outer radius R=10 cm (R is the distance from point O to point T). Note that in the figure below we

28. ## physics

A U.S quarter is rolling on the floor without slipping in such a way that it describes a circular path of radius R=4 cm. The plane of the coin is tilted at an angle of θ=45∘ with respect to the horizontal plane. Find the coin's period T in seconds, that

29. ## chem!!!!!!

How many atoms of each type are represented in each of the following? f. 5Fe(No3)2 g. 4Mg3(PO4)2 h. 2(NH4)2SO4

30. ## physics

An LSU football defender is 6 m behind a Georgia Tech receiver who has the football and is d meters from making a touchdown. If the LSU player is running at 5 m/s and the receiver is running at 4 m/s, what is the furthest distance, d, that the Tech player

31. ## physics

Two golf balls are thrown with the same speed off the top of a large bridge at the same time. Ball A is thrown straight downward, and Ball B is thrown horizontally off the bridge. Which ball hits the ground first?

32. ## physics

A 100-N mass on a horizontal table is connected to a 50.0-N hanging mass over a frictionless pulley. The two masses are moving at constant speed. What is the value of the coefficient of kinetic friction between the table and the horizontal mass?

33. ## children growing up

language development is initially triggered a.socially b.pschologically c.biologically d.by parental contact my answer is d

34. ## Math- Probability

A committee of five people is to be formed from six lawyers and seven teachers. Find the probability that none are lawyers.

35. ## Geometry

he chart below shows the names of all the tools that Valerie used to construct an acute angle. Tools used 1) Paper 2) Pencil 3) Compass Which statement best explains why Valerie’s construction may be inaccurate?

36. ## Probability

There is a woman that has a 40% chance of being in Casper recently, a 30% chance of being in Denver and a 27% chance that she has been to both. Find the probablility that she has been to Casper if she has been to Denver.

37. ## Probability

thirty animals are to be used in a medical experiment on diet deficiency: 3 male and 7 female rhesus monkeys, 6 male and 8 female dogs. If one animal is selected at random, what is the probability of getting a chimpanzee or a dog?

38. ## algebra

2.1(-1.2x+2.3y-1.1)

39. ## child psychology in general

which one of the following theories ask if children are self motivated or prodded? a.formal b.development c.informal d.learning my answer is b

40. ## child psychology in general

child development can most aptly be described as? a.linear b.like a pyramid c.like an inverted pyramid d.cyclical my answer is c

41. ## math

find the three cuberoots of 8( cos 264 + jsin 264) and state which is the principal cuberoot. Show all three roots on an argand diagram.

42. ## Math- Probablility

There is a woman that has a 40% chance of being in Casper recently, a 30% chance of being in Denver and a 27% chance that she has been to both. Find the probablility that she has been to Casper if she has been to Denver.

43. ## math

If you invest \$1000 today in a savings account that pays 3% annually what will be the Future Value of this amount in 10 years

44. ## English

The \$181 million IRIS mission (How do you read the expression above?) 1. The one hundred eighty-one dollar IRIS mission 2. The one hundred eighty-one dollars IRIS mission 3. The one hundred eighty-one dollar ai ar ai es mission 4. The one hundred

45. ## BUSN

Can you reconcile the little things with the trends in customer relations? To help get started, identify and discuss several 'little things' and trends in customer relations.

46. ## physics

A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius 11.0 m. A passenger feels the seat of the car pushing upward on her with a force equal to three times her weight at the bottom of the dip. What is her speed as

47. ## physics

Using a small pendulum of length 0.171 m, a geophysicist observes that it completes 1 cycle every 0.833 s. What is the value of g at his location?

48. ## physics

A string of length 10.0 m is tied between two posts and plucked. This sends a wave down the string moving at a speed of 130 m/s with a frequency of 215 Hz. How many complete wavelengths of this wave will fit on the string?

49. ## physics

The loudest sound in Earth’s history is believed to be the explosion of the volcanic island of Krakatoa, back in 1883. Physicists estimate that the intensity of the sound produced was 1.0×107 W/m2. How many decibels does this correspond to?

50. ## physics

A 1.0-m thin rod of aluminum is laid end-to-end with a 1.0-m thin rod of steel. The rods are initially at 25 oC. What is the total length of both rods when heated to 450 oC?

51. ## johnny

A projectile is launched over level ground at a launch angle of 70o with an initial velocity vo. At some later time while the projectile is on its way to the peak in its trajectory, its velocity vector makes an angle of 50o with respect to the horizontal.

52. ## English

Which of the following sentences contains a verb in the simple past tense? A. I was working overtime for about six months. B. She would like to join us. C. Jenna has driven this route multiple times. D. We helped Joan to pack her things.

53. ## Marketing

A supermarket like woolworth will fall under which marketing segmentation? A. Demographic B.Psychographic C.Geographic

54. ## Calculus

This integral does not converge using the normal (Leibniz) definition of integration. Using the identity: int(0-->inf)f(t)/(t)dt = int(0-->inf)F(p)dp, find: integral(0-->inf)(cos(at)+cos(bt))/t dt

55. ## chemistry

A 15.0L sample of argon has a pressure of 28.0 atm . What volume would this gas occupy at 9.90 atm? Assume ideal behavior.

56. ## chemiatry

What is room temperature?

57. ## finance mang

if there is \$48,000 in earnings available to common stock holders and the firm’s stock has a P/E of 20 times earnings per share, what is the current price of the stock?

58. ## General Chemistry

Calculate the pH and include the balanced equation for the acid dissociation reaction. 0.20 M HC3H5O2 (propionic acid, Ka = 1.3 x 10^-5)

59. ## physics

Our muscles atrophy when there is no gravitational force. On long space flights this is a problem, which is why astronauts exercise. On very long space flights it might be advisable to simulate gravity. Your space ship is a long cylinder of radius 100 m

60. ## physics

motion that has no acceleration 13 letters only

61. ## physics

A rugby player kicks a ball from a ground aiming to get the ball over rhe horizontal bar and betwween the vertical posts. the ball is 50 m away from goal line, directly infront of a goal, and the initial speed of the ball is 25 m/s. The horizontal bar is

62. ## help math

Alex wants to cover a 30 by 30 board perfectly with 450 1 by 2 dominos. He also wants to ensure that he can trace a path between any 2 dominos that connect through at most N dominos. What is the minimum possible value of N which would allow Alex to form

63. ## Calculus-Series

Sigma with n=1 to n= positive infinity (x^3)* (e^(-x^4)) Does it converge or diverge and use the integral test to show how. I got that it diverges, but this isn't correct. Can someone please explain? Thanks.

64. ## Chemistry

If a 0.875 gnsample of barium chloride is dissolved in water and then treated with a sodium sulfate solution, how many grams of barium sulfate precipitate should be collected?

65. ## Chemistry

The tin (II) fluoride in a 10.000 g sample of toothpaste is extracted into solution and them a precipitate of lanthanum (II) fluoride (LaF3) is formed by the addition of a lanthanum (III) nitrate solution. If the mass of the lanthanum (III) fluoride

66. ## Grammar

Do you use "how much" for uncountable nouns and "how many" for countable nouns? Please give me examples.

68. ## chemistry

How many moles of compound are in 30.2 g of Na2CO3·10H2O?

69. ## math

Two players play a game on the Cartesian plane. The game starts by placing a token at a lattice point in the first quadrant. The players alternate turns, with player one going first. On her turn, player 1 can move the token 2 units to the left or 1 unit

70. ## math

A queen on an English chessboard is able to attack in the same row, column and diagonal. The probability that 2 randomly placed queens on an 8 by 8 chessboard will be able to attack each other can be expressed as ab, where a and b are positive, coprime

71. ## dynamics

a ball of mass 8 kg is thrown vertically upward from the ground, with an initially velocity of 25 m/s. Determine the maximum height to which it will travel if atmospheric resistance is neglected

72. ## Math Statistics

5. Students in an introductory statistics class were asked to report the age of their mothers when they were born. Summary statistics include Sample size: 36 students Sample mean: 29.643 years Sample standard deviation: 4.564 years a. Calculate the

73. ## physics

A diver springs vertically upward with an initial speed of 1.7 m/s from a diving board that is 3.2 m above the water. Find the speed with which she enters the water, assuming completely vertical motion.

74. ## math

The drama club has 41 members. There are 9 more girls than boys. How many girls are in the club?

75. ## math

draw ABC, with A=35, AC=6cm and C=65

77. ## home economics

is south african government providing enough welfare or subsidy to the poor and underprivilaged?

78. ## physics

as i have known that centripetal force is directly proportional to the angular speed square. so, what is the relationship between angular speed and centripetal force ? when centripetal force increase, does angular speed increase too? i need more

79. ## Statistics

A researcher surveyed college students to study their opinion about the proposed change in smoking rules. The researcher asked a group of 30 students: 12 of them supported the change, 13 of them did not, and 5 had no opinion. This is not a binomial model

80. ## economics

is african government provide enough welfare?

81. ## American Government

Lock's use of the term "property"

82. ## Finance

I can't seem to figure this problem out: You make \$4,800 annual deposits into a retirement account that pays 10.5 percent interest compounded monthly. Required: How large will your account balance be in 30 years? I feel like I'm really close, though. Here

83. ## biology

Do all enzymes function within the different temperature range, like they do with pH?

84. ## Statistics

Multiple Choice: A die is rolled 600 times. The face with six spots appears 112 times. Is the die biased towards that face, or is this just chance variation? Answer the question in the steps outlined in Problems 1-6. 1) The null hypothesis is: a) The die

85. ## Statistics

Multiple Choice: A die is rolled 600 times. The face with six spots appears 112 times. Is the die biased towards that face, or is this just chance variation? Answer the question in the steps outlined in Problems 1-6. 2) The alternative hypothesis is a) The

86. ## Math

The average of a set of 7consecutivr positive intergers is 15. What is the sum of the three smallest numbers in that set? A) 38 B) 39 C) 42 D) 48 E) 51

87. ## help with chemistry please

Can someone please explain how to do this An equilibrium mixture at 225∘C contains 8.0×10−2M NH3 and 0.20M H2 for the reaction 3H2(g)+N2(g)←→2NH3(g) If the Kc at this temperature is 1.7×102, what is the equilibrium concentration of N2?

88. ## Statistics

Multiple Choice: A die is rolled 600 times. The face with six spots appears 112 times. Is the die biased towards that face, or is this just chance variation? Answer the question in the steps outlined in Problems 1-6. 3) If the null hypothesis were true,

89. ## Math- averages

Caitlyn sold 7cars per week for the first three weeks, but in week four she sold 11 cars. What is her average number of sales per week in her first four week on the job? A) 7 B) 8 C) 9 D) 11 E) 12 Please explain! Thanks!

90. ## Statistics

True or False Question: A die is rolled 600 times. The face with six spots appears 112 times. Is the die biased towards that face, or is this just chance variation? Answer the question in Problem 6. 6) “The test concludes that the die is biased towards

91. ## Stats

There are two boxes, each with several million tickets marked “1” or “0”. The two boxes have the same number of tickets, but in one of the boxes, 49% of the tickets are marked “1” and in the other box 50.5% of the tickets are marked “1”.

92. ## Stats

A student hands each of 300 classmates 2 chocolates side by side on a plate. Of the 300 students, 171 choose the chocolate that¢s on their right hand side, and the remaining 129 choose the chocolate that¢s on their left. The student says, “That¢s just

93. ## Physics - Magnetism

The direction of magnetic lines of force change if an iron piece is placed in its field. Why?

94. ## hs math

what is the break up of principal and interest in a payment of 249.73 at 3.599 with a term of 72 months?

95. ## MAROECONOMICS

Question 9 of 20 5.0 Points Investment includes the purchase of: A. stock options of Enron. B. software by an accounting firm. C. global positioning units for cruise missiles by the government. D. new chalk by a local school board.

96. ## children growing up

according to your study unit when discussing language development, performance refers to? a.understanding b.expression c.syntax d.grammar my answer is a

97. ## language

Write these words in alphabetical order. Alphabetize them to the second letter. grim, blot, sum, build, shelf

98. ## children graowing up

the final stage in an acute distress reaction prompted by separation is often ? a.dispair b.detachment c.resentment d.protest my answer is b

99. ## children growing up

a famous quotation on child development attributed to the Jesuits most emphasizes the importance of? a.early childhood experiences b.adult supervision c.religious indoctrination d.role models my answer is a

100. ## children growing up

the developmentall stage labelled intitiative and guilt refers to? a.parallel play b.introspective development c.peer relationships d.parental modelling my answer isd

101. ## math

There is a woman that has a 40% chance of being in Casper recently, a 30% chance of being in Denver and a 27% chance that she has been to both. Find the probablility that she has been to Casper or Denver recently.