# Questions Asked onJuly 12, 2012

1. ## physical science

A person drives a car around a circular cloverleaf with a radius of 58 m at a uniform speed of 10 m/s. ) Compare this answer with the acceleration due to gravity as a percentage

2. ## chemistry

a certain radioactive nuclide has a half life of 5.00 hour. Calcuate the decay rate for 1.000 mole of this nuclide __________ decay s-1

3. ## chemistry

A 100.0 ml sample of 0.300 M NaOH is mixed with a 100.0 ml sample of 0.300 M HNO3 in a coffee cup calorimeter. Both solutions were initially at 35.0 degrees celcius; the temperature of the resulting solution was recorded at 37.0 degrees celcius. Determine

4. ## physics

Io, one of the moons of Jupiter, circles Jupiter once every 1.77 days. The radius of its orbit is 4.22 X 108 m. If this orbit is circular, what is the mass of Jupiter?

5. ## math

simplify the following expression sin(v+x)-sin(v-x)? Rewrite the expression as an algebraic expression in x. sin(2cos^-1x)

6. ## chemistry

Calculate the value of Kc for 4NH3(g) + 3O2(g)= 2N2(g) + 6H2O(l)

7. ## physics

A 0.45 kg soccer ball approaches a player horizontally with a velocity of magnitude equal to 35 m/s. The player heads the ball straight back out horizontally, and the magnitude of the ball’s velocity after the collision is 40 m/s. The contact time

8. ## civlilization

All of the following are correct about nineteenth century Liberalism EXCEPT: A. having economic and political components. B. supporting the idea of civil rights. C. wanting to limit governmental power. D. opposing limiting governmental power.

9. ## physics

A fisherman yanks a fish out of the water with an acceleration of 2.4 m/s2 using very light fishing line that has a ''test'' value of 100N. The fisherman unfortunately loses the fish as the line snaps. A. find the mass thst the fishing line of 100N can

10. ## Math

If triangle ABC is similar to triangle DEF and the perimeter of ABC is 4 times greater than the perimeter of DEF , what is the relationship between the areas of the triangles?

11. ## chemistry

What is the molarity of a solution containing 18.0 g of KCl in 354 mL of solution?

12. ## trig

Solve the equation on the interval [0,360) cos^2t+2cos(t)+1=0

13. ## Math

A fruit salad is made up of cantaloupe, strawberries, and bananas. If a salad weighing 65 ounces contains three ounces of bananas for every ounce of strawberries and has the same number of ounces of cantaloupe as strawberries, how many ounces of bananas

14. ## chemistry

PLEASE SHOW PROCEDURE! You wish to prepare an aqueous solution that has a freezing point of -0.100 degrees Celsius. How many milliliters of 12.0 M HCl would you use to prepare 250.0 mL of such a solution? [Hint: Note that in a dilute aqueous solution,

15. ## Epidemiology

Can anyone answer this question? The prevalence of undetected diabetes in a population to be screen ed is approximately 1.5% and it is assumed that 10,000 persons will be screened. The screening test will measure blood serum glucose content. A value of

16. ## math

Suppose 48% of the general population of thw world has blood type O, 27% blood type A, and 23% blood type B. a. what is the probability that someone has type AB blood( assume that there are only four blood types? b. Of tjere are 30 people in a room,how

17. ## Acounting

During 2012, the company completed the following selected transactions. Journalize each transaction. Explanations are not required. a. Issued for cash 1,300 shares of preferred stock at par value. b. Issued for cash 2,400 shares of common stock at a price

18. ## math

Solving Equations with Fractions 1/2 x - 1/3 x = 7/3 solve for X i need help step by step process anyone?

19. ## Physics

Vectors and Scalars Graph 1. determine the total distance traveled and the displacement made. A. 5.0 km 15 degrees east of north B. 5.0 km 20 degrees east of south C. 5.0 km east D. 5.0 km 30 degrees south of west E. 5.0 km 20 degrees east of south F. 5.0

20. ## physics

A car initially traveling at 26 m/!@#\$%^&s the brakes, generating a constant acceleration of -2 m/s2. Under this acceleration, the car comes to a rest. If the tires have radii of 0.33 m, how many revolutions does each tire make as the car slows down and

21. ## statistic

what type of correlation would you expect to exist between people's height and their shoe size? My answer is a positive correlation.

22. ## Physics

A 3-kg mass attached to a spring with k = 130 N/m is oscillating in a vat of oil, which damps the oscillations. (a) If the damping constant of the oil is b = 19 kg/s, how long will it take the amplitude of the oscillations to decrease to 1% of its original

23. ## physics

An adult person is holding their arm straight out to their side. Their kid is hanging from their wrist, dangling. The kid has a mass of 20 kg. The length of adult’s arm between the shoulder and the wrist from which the kid is hanging is 0.7 m. The mass

24. ## physics

There are two spinning disks A and B arranged so that they initially are separated but can be pushed into contact. Disk A is made of a lighter material, so it has a moment of inertia that is one third that of disk B. Disk A starts off spinning at some ùi

25. ## civilization

15. The Eastern European state that gained its independence from the Ottoman Empire in 1830 was: (Points: 5) Serbia. Greece. Bosnia. Romania.

26. ## Science

What is the volume of 19 grams of flourine gas at stp?

27. ## Art 101 Art Appreciation

Compare Raphael’s School of Athens to Veronese’s Christ in the House of Levi. Explain how each artist reflected the political and social environment of Rome and Venice during the Renaissance period. Use one example from Gardner’s Art through the Ages

28. ## pre calc

use an appropriate half-angle formula to find the exact value ofthe expression. tan22.5 write the product as a sum sinxsin5x write the sum as a product sin2x-sin7x

29. ## math

The times for completing one circuit of a bicycle course are normally distributed with a mean of 81.7 minutes and a standard deviation of 8.6 minutes. An association wants to sponsor a race and provide prizes for the top (that is, fastest) 15% of riders.

30. ## math

Find 4.84 * 39 + 61 * 4.84

31. ## physics

A cylinder with a radius of 15 km is built in space for use as a space station. This cylinder is rotating about its long axis to generate ‘artificial gravity’. When people walk on the inner surface of the spinning cylinder, the normal force between

32. ## physics

Some kids playing at the park get creative, and they turn a seesaw into a trebuchet – they slide the plank until only 20 cm of its total length of 4 m extends from one side of the fulcrum. While bracing the system in a horizontal position, they place a

33. ## chemistry

what is the molarity of a solution containing 1 mole of urea per litre of the solution ? Hw to solve this

34. ## math

a-2/6 -5 = a+3/3 SOLVE FOR A solving equations with fractions

35. ## Mte 181

You have a heptagon with the following interior angles 125, 130, 175, 105, 165, 25. What's the measurement of the 7th angle and why?

36. ## statistic

Which "average" would be best to use in the following situation? The accountant for a small company is asked to determine the average salary of its employees. The company is owned by two brothers who each make over \$300,000 per year. The accountant makes

37. ## Math

A rectangular field is to be enclosed with 1270 ft of fencing. If the length of the field is 75 ft longer than the width, then how wide is the field? A) 430 ft B) 355 ft C) 280 ft D) 385 ft

38. ## College Chemistry

given the concentration of 125.0mg/L of Fe(2+)in the stock solution and the volume used which is (1.00mL) how do i calculate the concentration of iron(II) ions in mg/L? i pipet 1.00mL of the stock into a 250ml volumetric flask!

39. ## chemistry

1) Aluminum Chloride- Red- PH: 4.0 2) Sodium Carbonate - Violet- PH: 9.5 Ammonium Acetate - Yellow - PH: 6.5 the question is: explanation with equation to show hydrolysis Could you please help me thank you.

40. ## science

describe the efficiency of energy tranfer and how the amount of energy available at each trophic level affects the structure of the ecosystem>

41. ## Physics

A string is 37.5 cm long and has a mass per unit length of 5.95 10-4 kg/m. What tension must be applied to the string so that it vibrates at the fundamental frequency of 612 Hz? The answer is supposed to be 125 N, but I'm not sure how to get this answer.

42. ## trig

Find all solutions in the interval [0,360) sin(4t)=ã3/2

43. ## math

A storage area measures 15.6 feet by 10.2 feet by 8.5 feet. If it is 1/3 full, how many cubic feet of storage space remains (rounded to the nearest cubic foot)?

44. ## college chemistry

When ethane reacts with oxygen to form carbon dioxide and water. When 10 molecules of ethane react with 20 molecules of oxygen, what is the composition of the FINAL mixture?

45. ## Physics

A 48-cm-long wire with a mass of 11.0 g is under a tension of 50.5 N. Both ends of the wire are held rigidly while it is plucked. (a) What is the speed of the waves on the wire? (b) What is the fundamental frequency of the standing wave? The answers are

46. ## Discrete Math

so i have this description: S consists of all strings of a's, b's and c's where an increasing number of a's come before an increasing number of b's and c's or c's and b's. does this make sense for this recursive definition of the set S over {a,b,c}: 1. a

47. ## math

Using the formula C = 2ðr, find the circumference of a circle with diameter of 28 inches

48. ## math

the lab keeps two acid solutions on hand. one is 20% and the other is 35%. how much 20% and how much 35% acid solution should be used to prepare 25 liters of a 26% solution?

49. ## Calculus

Using the sequence below, write out a formula for the balance in the account n years after December 1996: Years Balance 1996 = \$20,000 1997 = \$22,000 1998 = \$24,200 1999 = \$26,620 2000 = \$29,282 r = 1.1 and 2006 = 51,874.8492 Thanks

50. ## Statistics

Problem 1 Use the Old Faithful data labelled Duration as a sample for problem 1. a. Determine the proportion of instances that the duration was less than 240 seconds. Also express the proportion as a percent. (hint: proportion is number of successes

51. ## Geometry

Write an equation of a line in slope intercept form that is parallel to y = 3x+6 and passes through the point (-10, 2.5). Do not use spaces and enter fractions as improper reduced fractions when needed.

52. ## math

How often do you run red lights? How does this lead to an erroneous conclusion?

53. ## ECONOMICS

1)The tire shop sells 50 tires a day at \$75. After they raise the price on tires to \$85, they now sell 46 tires a day. What is the elasticity of tires at the tire shop? A) Inelastic B) Elastic C) Unit Elastic D) Perfectly Inelastic E) Perfectly Elastic

54. ## math

find m and n of x^5+2x^2+mx+n if (x+1)^2 is factor comparing coeffcient like terms

55. ## math

The scores on a mathematics test have a mean of 72 and a standard deviation of 5. Find the test score that corresponds to a z-score of (-1.33).

56. ## math

The times for completing one circuit of a bicycle course are normally distributed with a mean of 81.7 minutes and a standard deviation of 8.6 minutes. An association wants to sponsor a race and provide prizes for the top (that is, fastest) 15% of riders.

57. ## physics

A car going 30 m/s just barely makes it around a curve without skidding. This curve had a radius of 150 m. The next curve has a radius of 75 m. At what maximum velocity can it go around this curve without skidding?

58. ## physics

A distance of 1 m separates two objects, one with a mass of 2 kg and the other with a mass of 4 kg. A 0.5 kg mass is placed between them at the point where the net gravitational force generated by the other two masses is zero. How far is the 0.5 kg object

59. ## History

2.   The 1978 Supreme Court decision in Bakke v. Regents of the University of California      A. established the rights of students to appeal college admissions policies. B. established the "red state-blue state" divide. C. ruled in favor of

60. ## ECONOMICS

1)The tire shop sells 50 tires a day at \$75. After they raise the price on tires to \$85, they now sell 46 tires a day. What is the elasticity of tires at the tire shop? A) Inelastic B) Elastic C) Unit Elastic D) Perfectly Inelastic E) Perfectly Elastic

Elaborate comparisons which are used by advertisers are usually _____. A)fallacies of evidence. B) fallacies of language. C)newsworthy. I think it is B, is this correct?

62. ## Chemistry

What happens when red blood cells are placed in a solution that contains 0.99% (m/v) NaCl solution?

63. ## finace

_________ of the vehicle is the likely consequence of failure to make the required loan payments. A. Theft B. Repossession C. Destruction D. Loss of warranty

64. ## algebra 117b

Are these factorable Beecause I tried and could figure it out can you please help me thankyou x^2-4x+-32, x^2+14x+41,4x^8x7-12x^6+8x^5

65. ## Math

Show that A = [3 2 4 2 0 2 4 2 3] is distinguishable even though one eigenvector has algebraic multiplicity 2. Do this by brute force computation. Why would you expect this to be true, even without calculation? Then, for the A, write A= Q lambda Q^(T)

66. ## Statistics

A reseacher would like to determine whether a change in lighting to full spectrum light bulbs increases productivity on an assembly line. A sample of n= 36 participants is obtained, and the light bulbs over the line are replaced. under general/historical

67. ## Math

Suppose that the hourly wage in a job is P 30. Let x represent the number of hours worked, and let f(x) represent the total amount earned. Write the function that shows the relationship.Graph the function.

68. ## Integrated Math 1

The solutions to the quadratic equation x^2+3x-4=0 are? (more then one answer) A. -4 B. 1 C. -1 D. 0 E. 4 F. There are no real roots.

69. ## Math

3x-2y=0 x-y=-1

70. ## math

A storage room measures 14.25 feet in length by 12.5 feet in width by 8.4 feet in height. It contains a box which is 2.5 feet in length, 5.2 feet in width and 1.5 feet in height . How many cubic feet of storage space are left in the room (rounded to the

71. ## English 002

Why complete senteces can help us in our writing at our jobs?

72. ## Physics

A 1250 kg car rams into the back of a slower moving truck having a mass of 2500 kg. During the collision the two vehicles become entangled so that they move off together afterward. If before the collision the car was going 20 m/s and the truck was going 14

73. ## government

_____ States supported the _____ Plan, which called for a bicameral legislature in which States would be represented according to their population

74. ## civilization

The Congress of Vienna in 1815 :Was it operated in accord with the principles of liberalism

75. ## Physics

Jack Sparrow swings on a 3 m long rope that was horizontal before he jumped from the boom of the Black Pearl. At the very bottom of his arc, he grabs Elizabeth Swann and they swing upward together. Sparrow (Depp) has a mass of 75 kg, and Swann (Knightley)

76. ## math

what is the greatest place of the greatest number, question : 316,006-41566

77. ## SOCIAL STUDIES

I don't understand this question exactly...please help :) what are examples of how the language of Iran may reinforce gender behavior and/or stereotyping.

78. ## math

Solving Equations with Fractions 3m/5 - 1/2 = 7/10 solve for M i need a step my step process. i need help.

79. ## statistic

The data below represent the ages of female actors at the time of winning an Oscar (1956 - 1996). 41 27 34 34 41 30 61 42 49 27 31 60 34 35 74 21 29 39 39 37 61 26 31 33 41 33 38 30 26 37 41 49 26 35 28 24 35 42 33 38 81 45 What is the frequency for the

80. ## Physics review

So I've already found/ was given the radius, hanging mass, and acceleration for three objects but I need to find the moment of inertia using all those three. What equation do I use or how do I incorporate all of them to find the moment of inertia?

81. ## art appreciation

How the Italo-Byzantie sense can be seen as a evident in Berlinghieri St Francis Altarpiece?

82. ## statistic

Choose ALL that represent quantitative data. the amount of time you spend studying each week your street address how many years you have owned your car the company that you use for cell phone service the number of people who live with you your score on the

83. ## math

a=b+c-2 a=c-d+9 a=b-d+11 Based on the system of equations above, what is the value of a? a) 2 b) 9 c) 10 d) 11 e) 20

84. ## chem

What is the formula to calculate qp?

85. ## science(biology)

Difference between tendon and ligament

86. ## Integrated Math 1

Suppose a parabola has its vertex at (0, 1) and its zeros at x = -2 and x = 2. Then equals _____. A. 1-1/4x^2 B. 4-x^2 C. X^2-1 D. X^2-4

87. ## Mathematics

write the following simultaneous equations in the form of AX= B where A,X and B are matrices 11x+6y=6 9x+5y=7 hence write the solution for x and y as a product of two matrices.

88. ## math

About a third of an orange crop was ruined by a sudden frost. Another third of the undamaged fruit spoiled while being taken to market. How much of the original orange crop could the farmer sell at the produce market?

89. ## English

Many days of the year are "national" something or other day. For instance, National French Fry day is in July. Write a paragraph telling your reader what day you'd like to start. Remember to use complete sentences. Remember that all the sentences need to

90. ## binghamton

What are the next three numbers in the pattern: 2, -4, 6, -8, 10

91. ## physics

A 5 g bullet passes through a 1 kg wooden sign that was hanging at rest on a 0.2 m long rope. After passing through, the bullet loses half of its velocity, and the sign gains just enough velocity to swing around in a complete vertical circle. Assume that

92. ## physics

A person is stretching by putting their arms straight over their heads and bending forward at their ankles until their hands are pushing against the wall in front of them. As they stretch, they keep stepping back from the wall, leaning further forward. The

93. ## Math

The Little Thrifty Market has a parking lot with dimensions 125 feet by 210 feet. How many square yards is that?

94. ## biology

What are biomes and how are they influenced by latitude and elevation? Give Examples

95. ## SCIENCE

Explain the four factors that produce changes in population size.

96. ## Calculus

what is the derivative of y=ã(3x)

97. ## math

what are prime factors?