# Questions Asked onJuly 1, 2013

1. ## maths

an amount of Rs 5000 is put into three/investments at the rate of interest of 6%, 7%, 8% per annum respectively; the total annual income is Rs 35800. If the combined income from first two investments is Rs 70 more than the income from the third. Find

2. ## Writing

SAT essay practice. The Chinese proverb, "In crisis is cleverness born" means that through crisis creativity is born. This does not apply to most of the world situations. How can crisis bring out creativity? Crisis is associated with chaos and confusion.

3. ## maths

there are 7 children standing in a line ,not all of whom have the same number of cakes with them, if the first child distributes his cakes to the remaining six children such that he doubles their respective no.of cakes ,then he will be left with four

4. ## bmath

Ben invests \$19,500 at 12% interest compounded quarterly for 10 years. Calculate the compound amount for his investment.

The height of a soccer ball that is kicked from the ground can be approximated by the function: y = -12⋅x2 + 48⋅x where y is the height of the soccer ball in feet x seconds after it is kicked. Find the time it takes the soccer ball to reach its maximum

6. ## CHEMISTRY

A throat lozenge contains 5.0mg of menthol, which has the formula C10H20O. a. How many moles of menthol are in 5.0 mg of menthol? b. What is the mass in grams of 1.56 moles of menthol? a. I got 3.2 x 10^-5 mole is that correct? b. Not sure how to do this

asked by Tiffany Brooke
7. ## physics

Two small stereo speakers A and B that are 1.40m apart are sending out sound of wavelength 33.5cm in all directions and all in phase. A person at point P starts out equidistant from both speakers and walks (see the figure (Figure 1) ) so that he is always

8. ## compound interest math

calculate the compound interest on an investment of \$45,000 at 6% interest compounded quarterly fro 3 years

9. ## Chemistry

Calculate the change in enthalpy when 52.0 g of solid chromium at 25°C and 1 atm pressure is oxidized. (H°f for Cr2O3(s) is –1135 kJ/mol.) 4Cr(s) + 3O2(g)  2Cr2O3(s) a. –1135 kJ b. –284 kJ c. –568 kJ d. +1135 kJ e. +568 kJ

10. ## Chemistry

An antacid contains 200mg of aluminum hydroxide and 200mg of magnesium hydroxide per capsule. a. How many moles of Al(OH)3 does each capsule contain? 2.56 x 10^-3 mol Al(OH)3 is that correct? b. What is the mass in milligrams of 0.0457 mole of magnesium

11. ## physics

A 950-kg race car can drive around an unbanked turn at a maximum speed of 46 m/s without slipping. The turn has a radius of 120 m. Air flowing over the car's wing exerts a downward-pointing force (called the downforce) of 12000 N on the car. (a) What is

12. ## physics

A person whose weight is 507 N is being pulled up vertically by a rope from the bottom of a cave that is 30.1 m deep. The maximum tension that the rope can withstand without breaking is 590 N. What is the shortest time, starting from rest, in which the

asked by dam on
13. ## math

nisha is following a recipe for tomatoe sauce that calls for 1 3/4 tsps of oregano. she is using a measuring spoon that holds 1/8 tsp. how many times ill she need to fill the measuring spoon with oregano to make the tomato sauce? I thought it was

14. ## Physics

A book weighing 12 N is placed on a table. How much support force does a table exert on the book? Answer in units of N

15. ## psy/315

A social psychologist asked 15 college students how many times they “fell in love” before they were 11 years old. The numbers of times were as follows: 2, 0, 6, 0, 3, 1, 0, 4, 9, 0, 5, 6, 1, 0, 2 Make (a) a frequency table and (b) a histogram. Then (c)

16. ## math

hasan ran 3 miles in 18.342 minutes. Safaya ran the same distance is 19.291 minutes. How much longer did it take safays to run 3 miles than hasan?

17. ## Chemistry

Carbon tetrachloride has an enthalpy of vaporization of 29.82kj/mol. If CCl4 has a normal boiling point of 350k, what is its vapor pressure at 273k? (R=8.31 J/molK)

18. ## physics

the man hanging upside down is holding a partner who weighs 491 N. Assume that the partner moves on a circle that has a radius of 5.09 m. At a swinging speed of 4.20 m/s, what force must the man apply to his partner in the straight-down position?

19. ## math

How would I solve this; John is paid at an hourly rate of \$15 and over time rate of 1.5 times his hourly rate. If john puts in w regular hours and y overtime hours in a week, what is his total wage for the week? (Monday-Friday

20. ## Chemistry

If I have 40mg of potassium, that would be how many moles of potassium? mols= grams/atomic number 0.04g/39.0983= .001023062 would equal 1.02 x 10^-3 correct? Did I do this problem correctly?

21. ## general physics

COMPLETELY STUCK? The period of rotation of the Moon is about 27 days, 8 hrs. The mass of the Moon is 7.35 x 1022 kg, and the radius of the Moon is 1.74 x 106 m. I wish to place a synchronous (period of orbit = period of the Moon’s rotation) satellite in

22. ## Stats

Two dice are tossed. What is the probability that the sum of both dice is a prime number? this is the answer i have ; Presuming two fair, 6-sided dice, each numbered 1 through 6: You can achieve one of the following results on any given roll: 2, 3, 4, 5,

23. ## Calculus

A television camera is positioned 2500 ft from the base of a rocket launching pad. The angle of elevation of the camera has to change at the correct rate in order to keep the rocket in sight. Also the mechanism for focusing the camera has to take into

24. ## physics

A 34.1 kg child rides a Ferris wheel whose diameter is 18.3 m. When the ride is turning at a constant rate, the child’s speed has a constant value of 4.23 m/s. Find the normal force the seat exerts on the child at: a) The top of the ride b) The bottom of

25. ## english

you are a speaker in a school debate write for or gainst,boys should not help in the kitchen

26. ## Momentum and impulse

You stand at the end of a long board of length L. The board rests on a frictionless frozen surface of a pond. You want to jump to the opposite end of the board. What is the minimum take-off speed v measured with respect to the pond that would allow you to

27. ## Mathematics

Find x given that 132x=72ten?

28. ## physics

The hammer throw is a track-and-field event in which a 7.30-kg ball (the hammer) is whirled around in a circle several times and released. It then moves upward on the familiar curved path of projectile motion and eventually returns to the ground some

The height of a soccer ball that is kicked from the ground can be approximated by the function: y = -12⋅x^2 + 48⋅x where y is the height of the soccer ball in feet x seconds after it is kicked. Find the time it takes the soccer ball to reach its

30. ## Statistics

A company has developed a new type of light bulb, and wants to estimate its mean lifetime. A simple random sample of 12 bulbs had a sample mean lifetime of 692 hours with a sample standard deviation of 30 hours. It is reasonable to believe that the

31. ## math

Manually calculate the compound interst on an investment of \$12,500 at 7.5% interest compound semiannually for 2 year.

32. ## Chemistry

List in increasing order of expected Rf values in a TLC experiment: salicylic acid, toluene, and benzophenone.

33. ## physics

Suppose two carts, one twice as massive as the other, fly apart when the compressed spring that joins them is released. How fast does the heavier cart roll compared to the lighter cart?

The height of a curved support beam can be modeled by F(x)=- x^2/288 +18 Find the height and width of the beam. Height = units Width = units

35. ## Chemistry

A hard water sample contains 121 mg of CaCO3 per liter of water. Calculate the mass of Na3Po4 needed to remove all Ca^2+ ions from 2.50 L of the water sample? Please help! This question is already on here, but I don't understand the part where it says

36. ## math compound interest

rigoberto invests \$8,000 at 6% interest comp semiannually for 1 year. Use the compound interest formula

37. ## maths

the difference b/w a 3 digit number and the number formed by reversing its digits is 396,the difference of hundreds and the units digit,is one less than the sum of the units and tens digit .find the number

38. ## math

calculate the compound interest on an investment of \$18,000 at 8% interest compounded quarterly for 15 months.

39. ## physics

Two objects (52.0 and 20.0 kg) are connected by a massless string that passes over a massless, frictionless pulley. The pulley hangs from the ceiling. Find (a) the acceleration of the objects and (b) the tension in the string.

40. ## Physics

A 13,900 kg truck is moving at 23.5 m/s on a mountain road when the brakes are applied. The brakes FAIL!! Fortunately, the driver sees a deceleration (ouch!) ramp a short distance ahead. This is an incline used by out of control trucks to dissipate their

41. ## Econoics

Cobb-Douglas Production function Y=60K^1/3 L^2/3 If K=64 L=8 calculate MPL What is the equilibrium real wage in the economy

42. ## Chemistry

An antacid contains 200mg of aluminum hydroxide and 200mg of magnesium hydroxide per capsule. a. How many moles of Al(OH)3 does each capsule contain? b. What is the mas in milligrams of 0.0457 mole of magnesium hydroxide?

A rectangular picture measuring 3 in. by 7 in. is surrounded by a frame with uniform width x. Write a quadratic function in standard form to show the combined area of the picture and frame.

44. ## Chemistry

A metal crystallizes in a face-centered lattice. The radius of the atom is 198pm and the density of the element is 6.57g/cm^3. What is the identify of the metal?

45. ## Chemistry!!!

1.)The silica that makes up the stationary phase in TLC chromatophraphy is more polar than the mobile phase. What then might the relative positions of the analgesics on the developed TLC plate tell you about the polarity of these molecules? Does this match

46. ## Gen physics

A 13,900 kg truck is moving at 23.5 m/s on a mountain road when the brakes are applied. The brakes FAIL!! Fortunately, the driver sees a deceleration (ouch!) ramp a short distance ahead. This is an incline used by out of control trucks to dissipate their

47. ## Algebra

An executive flew in the corporate jet to a meeting in a city 1700 kilometers away. After traveling the same amount of time on the return flight, the pilot mentioned that they still had 300 kilometers to go. The air speed of the plane was 600 kilometers

48. ## Chemistry

An antacid contains 200mg of aluminum hydroxide and 200mg of magnesium hydroxide per capsule. a. How many moles of Al(OH)3 does each capsule contain? b. What is the mas in milligrams of 0.0457 mole of magnesium hydroxide?

49. ## Physics

You stand at the end of a long board of length L. The board rests on a frictionless frozen surface of a pond. You want to jump to the opposite end of the board. What is the minimum take-off speed v measured with respect to the pond that would allow you to

50. ## Contemporary math

Using the Compound Interest Table, calculate the compound amount after 5 years for an investment of \$7,700 at 6% interest compounded quarterly. My answer is \$10,370.82 is this correct?

51. ## statistics

Assuming SAT score data are normally distributed, if only the top 25% of students based on SAT scores qualify to be interviewed for a particular school what would be the minimum score required to have to be interviewed if the population mean is a 1509 and

52. ## Physics

A 51.9-g golf ball is driven from the tee with an initial speed of 50.8 m/s and rises to a height of 28.4 m. (a) Neglect air resistance and determine the kinetic energy of the ball at its highest point. (b) What is its speed when it is 6.08 m below its

53. ## 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 x 106 m, determine the speed and centripetal

54. ## math

Jessica has 1/3 of a bag of dog food to divide evenly between her 2 dogs. What fraction of the whole bag does Jessica give each of her dogs?

55. ## Math

Each plant of a certain variety yields 50 seeds in the early fall and then dies. Only 40 percent of these seeds produce plants the following summer and the remainder never produce plants. At this rate, a single plant yielding seeds in 1986 will produce how

56. ## accounting

here is what I need to do; however my problem is I can not find where I can download the financial information on any corporation Select an American corporation. Visit its website and download the Income Statement, Statement of Stockholders Equity, Balance

57. ## math

To determine the compound amount of an investment of \$10,000 with an interest rate of 6% compounded monthly after 4 years requires you to use a table factor that goes beyond the Compound Interest Table. Calculate the new table factor for this investment.

58. ## math

1. Consider the following scenario: A random sample obtained from a population has a mean of µ=100 and a standard deviation of σ = 20. The error between the sample mean and the population mean for a sample of n = 16 is 5 points and the error between a

59. ## Physics

A uniform bar 1.000 meters in length and having a cross sectional area of 10.000cm^2 is subjected to a loading of 5750.000 Newtons. This load causes an extension to the bar length of 2.740mm. Calculate the stress and the strain produced. ANS 1 = kPa (Round

60. ## chemistry 1st year

A 5 liter vessel contains 2g of hydrogen and 28g of nitrogen at 27 temperature.find to total mixture ?

61. ## maths

o,tt,ff,ss,.....?

62. ## MATH

I don't understand this,so can you please explain more clearly. Where did you get the 1/5? 1.The point P divides the interval joining A(-1,-2) to B(9,3) internally in the ratio 4:1. Find the coordinates of P.

63. ## social, political,

As a policy maker, how can sustainability be achieved

64. ## Physics

1) Calculate the tensile stress in a 33.000mm diameter rod subjected to a pull of 30.000kN. ANS= MPa (Round to 3 decimal places) Diameter = 33.000mm = 0.033m 30.000kN = 30000N Area = pi*d^2/4 = 3.1416 * 0.033^2/ 4 = 3.1416 *0.001089/ 4 = 0.0034212024/ 4 =

65. ## Math

John has a box that contains one red ball and one blue ball. Every minute he reaches into the box and randomly takes out a ball from it (without looking). No matter which ball he took out, he puts it back together with another ball of the same color. Thus,

66. ## Precalculus

Find all solutions in the interval [0,360degrees] sin(4t)= (Square root of 3)/2

67. ## physics

Even though we have found an earth sized planet around the nearest star Alpha Centauri B, we're not even close to getting there. To see this let's think about the duration of a flight to Alpha Centauri B, which is about 4×1016 meters away. Imagine a

68. ## ALGEBRA

A satalites escape velocity is 6.5 mi/sec, the radius of the earth is 3960 miles and the earth's gravitational constant(g) is 32.2 ft/sec^2 How far is the satelite from the surface of the earth?

69. ## algrbra

A pine tree casts a shadow that is 49 feet long. A 10 foot sign next to it casts a shadow that is 8 feet long. How tall is the pine tree?

70. ## physics

starting from rest, find a 54.6kg child’s speed at the bottom of a 15.5m tall slide if it is assumed to be frictionless

71. ## Math(work problem)

A man can do the job in 8 days after 3 days of working a new guy help him and it takes 3 more days to finish the job together. how long will it take the new guy to finish the job alone?

asked by HELP HELP MHNS
72. ## chemistry

an 80ppm of KMno4 produced an absorbance of 0.4 in a 1.0cm cuvette. Calculate the molar absorptivity of KMno4

73. ## Trignometry

Solve the equation. Express your answer in trigonometric form. x^5-11=0 I know the answer is: 11^1/5(cos α + i sin α) for α = 0°, 72°, 144°, 216°, 288°. But I don't know where to even start working on this problem.

74. ## Algebra2...........

Using the integers 2,3,4,5, How many 3-digit odd numbers less than 300 can be formed if no repetition of digits is allowed? Please explain and show work.

75. ## Math

my tenths is twice greater than my thousandths . My hundredths digit is the sum of my tenths and thousandths . Who am I?

asked by anne klein
76. ## math

1. A sample of n=20 has a mean of M = 40. If the standard deviation is s=5, would a score of X= 55 be considered an extreme value? Why or why not?

77. ## Physics

A rock is ejected vertically upward at 40 m/s. At what time is the rock moving at 20 m/s upward.

78. ## Physics

The ultimate strength of a steel rod is 600.000MPa. if the factor of safety 3.000 is required, what is the maximum permissible load for the rod if it has a diameter of 6.000cm? ANS = kN (Round to 3 decimal place) Ultimate strength = 600.000MPa =

79. ## statistics

A senator asks his constituents to rank seven issues in order of importance. How many rankings are possible?

80. ## math

A newly-opened restaurant has 5 menu items. If the first 4 customers each choose one menu item uniformly at random, the probability that the 4th customer orders a previously unordered item is a/b, where a and b are relatively prime positive integers. What

81. ## Physics

Two charges +q and −q are separated by a distance d=50 cm. The electric field lines for this system form the the well-known pattern showed in the figure below. Consider two lines L1 and L2 lying on the same plane and leaving the positive charge at

82. ## Math

Which fraction is equivalent to 5/6 (divided sign) 1/3? 5/18 2/5 1and 1/6 2and1/2

83. ## Math

Which fraction is equivalent to 5/6 * 1/3 ? 5/18 2/5 1 and 1/6 2 and 1/2

84. ## Math

Oatmeal Recipe: Water 3/4 cup Salt: 1/4 teaspoon Oats: 1/3 cup If the least possible multiple of the recipe above is prepared so that a whole number of cups of both water and oats are used, how many teaspoons of salt would be required?

85. ## Math

If 1 more than a certain number is 3 less than a second number, the larger of these numbers minus the smaller is equal to?

86. ## Algebra 2

Using the integers 2,3,4,5, How many 3-digit odd numbers less than 300 can be formed if no repetition of digits is allowed? Please explain and show work.

87. ## Math 17

What is the proof of theorem 2.23, where (b/a)+(d/c)=[(bc)+(ad)]/(ac). Thank you :)

88. ## socology

what are some interdisciplinary aspect of aging how have the percentage of the American workforce changed and will continue to change

89. ## economics

hoew do each of the following infastructure items affect aggregate supply: a) highways, b) schools, c) sewerage system, d) courts and prisons ?

90. ## Algebra 2

when expanding (x+y)^8, either an x or a y from each of the eight factors is used in the product. That means that x^3y^5 is going to occur several times and the number of times it occurs becomes the coefficient for x^3y^5. Based on this, what is the

91. ## Physics

The Ultimate strength of a round steel rod is 630.000MPa. If a factor of safety of 5.000 is required, what is the maximum permissible load for the rod if it has a diameter of 3.000cm? ANS = kN (Round to 3 decimal places) Safety = 5.000 Rod diameter =

92. ## Physics

What is the factor of safety of a steel hanger having an ultimate strength of 630.000MPa and supporting a load of 65000.000N. The steel hanger in question has a cross sectional area of 5.300cm. ANS = (Round to 3 decimal places) Load = 65000.000N ultimate

The Chicago Art Museum's Renaissance display consists of four hallways bordered around a square courtyard. A single guard is assigned to patrol the four hallways. When the guard starts working, he begins in one of the corners and walks clockwise. When he

94. ## Math

Six people are playing Secret Santa for Christmas. They will each give one gift to someone, and each receive one gift from someone. They are not allowed to receive their own gift. How many different ways are there to exchange gifts?

95. ## trig, math

Which of these functions has period 7? A)y= cot 7/pi x B)y= tan pi/7 x C)y= sin 7/pi x D)y= cos pi/7 x

96. ## Cult Anthro

Running amok (murderous raging) in Malaysian culture susto,spirit attack in Latin America,and fright in Carribean are example of what

97. ## business math

What would be the compound amount after 19 years on an investment of \$42,000 with an 11% interest rate compounded annually?

98. ## Statistics

What critical value for z would be used to test the hypotheses: H0:μ≤10 and Ha:μ>10, for α = 0.05 ?

99. ## general physics

His spacecraft, Vostok I, was a sphere about 2.3 m in diameter, and it reached a maximum altitude above Earth’s surface of 327 km. What was the spacecraft’s speed at this point in its orbit?

100. ## Algebra 1b

v = pi r squared h for h

101. ## Chemistry

If I have 1.93 x 10^-6 mole of chromium that would equal 100.35 mcg correct?

Thank you

103. ## health

Nearly ________ movement in the body is the result of muscle contraction. A. All B. 50% of all C. 10% of all D. None of the above

104. ## math

What would be the compound amount after 19 years on an investment of \$42,000 with an 11% interest rate compounded annually?

105. ## psy

After seeing how she interacts with the little Maltese dog next door, Ellie’s parents decide to get her a dog too. Ellie’s new Golden Retriever is much bigger and looks different, but because it is new but very similar, she understands how to interact

222+999

107. ## Physics

A steel bar has a rectangular cross section measuring 1.000cm by 2.900cm and is 8.700m in length. A load of 189000.00N causes the bar to extend 1.500mm. Calculate the stress and strain produced. ANS 1 = kPa (3 decimal places) ANS 2 = (6 decimal places)

108. ## Physics

Charged particles such as ions can separate the charges inside of overall electrically neutral atoms, thus making an electric dipole. A dipole is characterized with a dipole moment p=αEexternal, where α is the polarizability of an atom, and Eexternal is