# Questions Asked onJuly 31, 2012

(1) After my interview with these four young people, I reflected on the quiet sense of "difference" I sensed with many of these Upward Bound students. (2) As a college teacher who has also taught seventh-grade science, I have some experience with the faces

2. ## physics

A 1.20 kg mass on a horizontal spring oscillates on a frictionless surface with a displacement as a function of time given by x(t) = 0.075cos(4.16t – 2.45). (Units are standard units.) a.) Find the time for one complete vibration. b.) Find the force

3. ## math

The average middle-distance runner at a local high school runs the mile in 4.5 minutes, with a standard deviation of 0.3 minute. The percentage of a runners that will run the mile in less than 4 minutes is %.

4. ## physics

A 100 aluminum calorimeter contains 200g of water with an intial temperature of 15 degree celsius. if a 95g piece of copper heated to a temperatude 90 degree celsius is dropped into water, what will be the final temperature of the mixture? neglect heat

5. ## physics

a 200g aluminum container has 500g of water with an initial temperature of 22 degree celsius. The following heated pieces of metal are dropped into water at the same time as follows: 300g piece of aluminum heated at 100 degree celsius; a 50g piece of

6. ## physics

a 200g aluminum container has 500g of water with an initial temperature of 22 degree celsius. The following heated pieces of metal are dropped into water at the same time as follows: 300g piece of aluminum heated at 100 degree celsius; a 50g piece of

7. ## Pre-Calculus

If θ represents an angle such that sin2θ = tanθ - cos2θ, then sin θ - cosθ = A. -√2 B. 0 C. 1 D. 2√2 What equation can I use to solve this problem?

8. ## Science math, science, social studies

a cyclist travels a distance of 4km from P to Q & then moves a distance of 3 km at right angle to PQ . Find displacement graphically

9. ## physics

a bullet of mass 20 gram is horizontly fired with a velocity 150 mtr/sec from a pistol of mass 2 kg. what is the recoil velocity of the pistol?

10. ## Physics

The intensity of sunlight at the the top of the Earth's atmosphere is about 1350 W/m2. (The intensity at the surface of the Earth is somewhat smaller due to absorption and reflection by the atmosphere.) What is the total power emitted by the Sun?

11. ## Phy 231

A CD-Rom starts from rest and undergoes uniform angular acceleration until it reaches 26,000 rpm in 0.25 s. Through what angle does it rotate during this time?

12. ## Chemistry

For the reaction IO3– + 5I– + 6H+ 3I2 + 3H2O the rate of disappearance of I– at a particular time and concentration is 2.8 x 10-3 M s-1. What is the rate of appearance of I2 in molarity per second?

13. ## Early Childhood

Rosa is a newborn. As she grows, which will she learn to control last? A. Her fingers B. Her hands C. Her arms D. Her head Need help!! I put A but I'm not for sure. A preschool child can be designated a reader when he or she: A. writes a word. B. sounds

14. ## math

Two questions 1; what does 2n mean? 2:By accident I posted my question as an answer can you tell me a way to delete it. Please make sure that Ms.Sue answers this thank you.

15. ## Chemistry

To make some solution 500mL H2SO4 0.3 M. How many grams of H2SO4 are used?

16. ## Physics

An ice cube of volume 17.7 cm3 is initially at a temperature of -19.3°C. How much heat is required to convert this ice cube into steam?

17. ## Physics

A construction crew pulls up an 87.5-kg load using a rope thrown over a pulley and pulled by an electric motor. They lift the load 15.1 m and it arrives with a speed of 15.6 m/s having started from rest. Assume that acceleration was not constant. a. How

18. ## Maths- Directions

A person moves towards north a distance 20m from point P and reaches at Q. He turns 135 degrees in clockwise direction and goes 40√2m. From here he turns 135 degrees clockwise and goes 25m. How far is he now from his initial position? (If you could,

19. ## statistics

A researcher wants to carry out a hypothesis test involving the mean for a sample of n = 20. While the true value of the population standard deviation is unknown, the researcher is reasonably sure that the population is normally distributed. Given this

20. ## Math

If xΩy is defined as the smallest integer of which both x and y are factors, then 10Ω32 is how much greater than 6Ω20?

21. ## Macro economics

Explain the difference between the real exchange rate and the nominal exchange rate

22. ## Physics

You drop 378 g of solid ice at −35°C into a bucket of water (1,200 g) at 45°C. Eventually, the ice all melts, and the entire system comes into thermal equilibrium. Find the final temperature of the system.

23. ## Chemistry - titration lab

Hello. For my chemistry of solutions class, we had a titration lab where we titrated NaOH into an HCl + H2O mix. This was a preparatory titration for the next one consisting of the hydrolysis of ethyl acetate into acetic acid with H+ ions as a catalyst (in

24. ## Physics

How much heat is required to raise the temperature of a 4.3-kg block of steel by 48 K? (The specific heat of this steel is 450 J/kg · K.)

25. ## Physics

If you combine 34 kg of ice at 0°C with 80 kg of steam at 100°C, what is the final temperature of the system? °C

26. ## chemistry

the equation n2+3h2 2nh3

27. ## chemistry

A volume of 40.0 of aqueous potassium hydroxide was titrated against a standard solution of sulfuric acid h2so4. What was the molarity of the solution if 20.02 of 1.50M h2s04 was needed? Who helps me to solve it for me.

28. ## math

From a lighthouse (270m above the ocean), an observer notices a ship. The lighthouse is setback from the ocean about 60m. To keep the ships safe from an underwater obstacle at this spot, they need to stay at least 1.4km away from shore. To see the ship,

29. ## Phy 231

A baton consists of a nearly massless rod of length L and two spheres attached to the end of the rod, whose masses are each M and whose centers are separated by L. The spheres have radius R. If the sphere radius R is not negligible compared to the length

30. ## physics constant angular acceleration

A wheel with radius 25.2 cm rotates with constant angular acceleration 3.75 rad/s2 (radians per second per second). If at t = 0 s, the angular speed of the wheel is 4.3 rad/s, how long does it take the wheel to complete 4 revolutions?

31. ## design

1. Which one of the following correctly states how gussets for panties are generally made? A. With a single layer of garment fabric in one piece. B. With two layers of cotton fabric in two separate pieces.(yes) C. With two layers of garment fabric in two

32. ## ENC1101

I need a thesis statement for my reflection essay in my Enc1101 class

33. ## physics

a rectangular pool has a volume of 375 m.The pool is 10 m long and 5m wide, how deep is the pool

34. ## maths

At a certain time of the day a post, 4m tall, casts a shadow of 1.8m. What is the angle of elevation of the sun at that time?

35. ## Early Childhood

Studies show that early readers: A. watched educational television more than two hours a day. B. had access to a variety of reading material and watched educational television. C. knew all of the letters and sounds by age 2. D. were read fiction and

36. ## physics

How much energy is required to melt 0.1 kg of water (hfusion = 80 cal/g, hvaporiztion = 540 cal/g) at 0oC.

37. ## Macro economics

Paper currency is the most easily recognized form of money. How well does paper currency serve the functions of money if we have an inflation rate of 50-percent per year? b) Gold is also recognized as a form of money. How well does gold serve the functions

38. ## physics

Watching Old Faithful erupt, you notice that it takes a time for water to emerge from the base of the geyser and reach its maximum height.

39. ## Dynamics

State the principle of impulse and momentum. And clearly difference between impulse and impact

40. ## PHI 103

I am in crunch time and need the answers to the week 5 quiz from Ashford

41. ## Mathematics

an aircraft's reading shows time 8:55 at distance travelled 957km time 9:07 at distance travelled 1083 calculate distance travelled in km calculate the average speed of aircraft in km/h (that is what was asked it never said total distance it said calculate

42. ## math

a triangle has sides 9cm,12cm,18cm.the longest side of a similar triangle measures12cm.what is the length of other sides

43. ## Theory of machine

A punching machine carries out of 5 holes per minute each hole of 30 mm diameter in 40 mm thick plate requires 10 Nm of energy/mm2 of the sheared area.The punch has a stroke of 90 mm.Find the power of the motor required if the mean speed of the fly wheel

44. ## Dynamics

True or false (Each question carries 1 marks) (i) A rigid body is an idealization of the behavior of a body. (ii) A Geo-stationary satellite follows a circular orbit at a unique and has a time period of 24h. (iii) Constancy of areal velocity for a central

45. ## Math

Christine runs 3 miles in 25 minutes. At the same rate, how many miles would she run in 85 minutes?

46. ## design

1. What secondary personal choices work best for those with a primary cool characteristic? A. Deep, light, warm, or cool.(yes) B. Bright, light, deep, or muted C. Muted, bright, cool, or warm D. Deep, light, bright, or muted 2. Which of the following is a

47. ## math

So that technically means that 2n means x2.

48. ## economics

It is often suggested that the Bank of Canada try to reduce the inflation rate to zero. If we assume that velocity is constant, does this zero-inflation goal require that the rate of money growth equal zero? If yes, explain why. If no, explain what the

49. ## Macro economics

How would a fall in U.S. interest rates affect Canadian investment, saving, net foreign investment, and the Canadian real exchange rate

50. ## Math

DIRECTIONS:Rewrite without using absolute the absolute value symbol. a. (-5)|3-6|

51. ## geometry

The sides and bottom of a swimming pool are to be lined with vinyl to prevent it from leaking.The pool measures 6m by 4m, and has a uniform depth of 2m. Calculate the area of vinyl that will be required.

1. Which one of the following correctly states how gussets for panties are generally made? A. With a single layer of garment fabric in one piece. B. With two layers of cotton fabric in two separate pieces.(yes) C. With two layers of garment fabric in two

53. ## Dynamics

a 1500 kg automobile is travelling upto 20 degrees inclined at a speed of 6m/s. if the driver wishes to stop his car in a distance of 5m, determine the frictional force at pavement which must be supplied by rear wheels

54. ## copy paper

how much i one ream of copy paper?

55. ## english literature

In young goodman brown what is the conflict, effect (emotional impact of story on reader), end orientation, exposition, rising action, climax, falling action, conclusion, dramatic irony? I know the conflict is good vs evil and human nature to do evil; the

56. ## Math

If Jack's house is 7.1 miles due north of the Senior Citizen Center and Belinda's house is 6.3 miles due west of it, then to the nearest tenth,what is the shortest distance between their houses?

57. ## Physics

Your swimming pool is square and 4.9 m on a side. It is 3.9 m deep in the morning. If the temperature changes by 44°C during the afternoon, how much does the depth of the water increase?

58. ## Circle question

In a circle with radius 20cm, a chord is drawn with length 12 cm. Find the area of the two regions created. Find the perimeter of the two regions created.

59. ## geometery

how long does a piece of wire need to measure to get 18" diameter?

60. ## Chemistry

Calculate the mole fraction of glucose (C6H12O6) in a solution which contains 15g of glucose in 100 g of H2O.

61. ## Trigonometry

A hill in Colorado makes an angle of 15.0° with the horizontal and has a building at the top. At a point 75.0 feet down the hill from the base of the building, the angle of elevation to the top of the building is 55.0°. What is the height of the

62. ## Pure pharmacy math

How many ml of terpin hydrate elixirs containing 33mg/5ml and 5mg/5ml needed to prepare 6 fl oz of an elixir containing 4mg terpin hydrate per ml? My calculation: 33mg/5ml = x/100ml - 660mg changes 0.66gm 5mg/5ml = x/100ml - 100mg - 0.1gm 4mg/1ml = x/100ml

63. ## math

the constant angular acceleration of pulley is 4rad/s2, angular speed 3 rad/s, determine the radius of pulley if the total acceleration of a print on the rim of the pulley is 3.5m/s2

If trypsin and chymotrypsin become activated within the pancreas and then are released in their active forms into the bloodstream, why would this represent a potentially life-threatening situation?

65. ## Dynamics

The power developed by a man in riding up a 6 percent grade at a constant speed is 200 w. The man and his bicycle have a combined mass of 80 kg. Determine the speed of riding

66. ## math

How do you solve this by elimination method? 4x+3y=016x+3=8y

67. ## economics

for a charity show the rate of adult passes Rs.20 more than the children pass.when a company sold 50 adult and 200 children passes,the amount collected is Rs.2250.find the price of an adult pass.

68. ## human resources

melda is a careful decision maker who has a reputation for taking a long time to make decisions. She is very thorough in collecting information and evaluating more alternatives than other managers are. Imelda is probably __________ in her decision-making

69. ## Physics

A construction crew pulls up an 87.5-kg load using a rope thrown over a pulley and pulled by an electric motor. They lift the load 15.1 m and it arrives with a speed of 15.6 m/s having started from rest. Assume that acceleration was not constant. a. How

70. ## Finance Accounting

Vanity Press, Inc., has annual credit sales of \$1.6 million and a gross profit margin of 35 percent. a. If the firm wishes to maintain an average collection period of 50 days, what level of accounts receivable should it carry? (Assume a 365-day year.) b.

71. ## Chemistry

A buffer is prepared by transferring equal concentrations of the components of the conjugate pair, C6H5COOH and C6H5COONa, into a beaker. What is the approximate pH of the buffer? (Ka = 6.5  10–5) a) 2.81 b) 4.19 c) 7.00 d) 9.81 e) 11.19

72. ## Biology..eh:/

If trypsin and chymotrypsin become activated within the pancreas and then are released in their active forms into the bloodstream, why would this represent a potentially life-threatening situation?

73. ## Math

a square in a circle with a radius of 2 pi .What is the perimeter of the square?

74. ## Physics

Use the exact values you enter in previous answer(s) to make later calculation(s). Energy-efficient windows are constructed with two panes of glass separated by an air gap (see figure below). In a typical window of this type, the air gap makes a huge

75. ## Math

The radius of the small circle A is one-half the radius of the large circle B.WHat is the ratio of the area of the small circle to the area of the large circle?

76. ## Physics

A snake is sunning itself on a rock. (a) If the snake is 0.5 m long, what is the approximate amount of radiation it absorbs from the Sun in 11 min? (Assume the snake has a cylindrical shape and ignore both ends, a radius of 0.03 m, and a mass of 2.1 kg.

77. ## Math

Which one is a better deal? 48 sheets of origami for \$2.75 or 55 sheets of origami paper for \$3.10

Z-12 / 3=4

79. ## math

a bus charges 1.00 for each piece of luggage. if you ridethe bus at 8.50 and you have 3 suitcases, what is the total cost? solve using computations

80. ## math

I need a lot of help on multiplication and division.Will you help me?

81. ## Dynamics

A pelton wheel attains its operating speed of 800 rev/min within 2s after it is turn on. Determine the constant angular accelerations of pelton wheel. also find the total number of revolutions the wheel makes before it attains operating speed

82. ## Math

The probability that Aaron sees Hannah on any given day is 1/2. What is the probability that he sees her 3 out of all 5 days this week?

83. ## chemistry

if the pressure of 1.50L of hydrogen gas at 100 degrees celsius decreases from .500atm to .115atm,what is the final volume. assume temp remains the same

84. ## math

1/xy + 3/xy - 2/(x+y)

85. ## accounting

for a charity show the rate of adult passes Rs.20 more than the children pass.when a company sold 50 adult and 200 children passes,the amount collected is Rs.2250.find the price of an adult pass.

86. ## Math

Phillips used 125, 130, 135, 140 and 145 as class centres. What class intervals did she use? Or do u need to see the graph to solve this?

87. ## Law/421

Can written agreements be modified orally? Explain why or why not.

16x-18=4+5x

89. ## Phy 231

an 18-wheeler travels down the highway with a speed of 50 km/hr. each wheel has a 30 cm radius and a mass of 16 kg. what is the total kinetic(translational and rotational) energy of all 18 wheels?

90. ## management decision making

Analyze and compare both data sets using the data analysis and biases concepts from Chapter 11 of Sekaran & Bougie (2010). Compare only those categories that you find are significant to your analysis in demonstrating whether the US demographics based

91. ## vet tech

Which of the following sets of Library of Congress call numbers is in the correct order? A. E88 G2512 S57 1998, E88 G62 D225, E88 G62 L45, E88 G62 L166 1995 B. E88 G62 D225, E88 G62 L166 1995, E88 G62 L45, E88 G2512 S57 1998 C. E88 G62 L166 1995, E88 G62

92. ## Dynamics

Two moving balls collide together. Determine the magnitude of their common final velocity. The first ball of mass o.5 kg and a velocity va = 3i+5j m/s. The second ball B has a mass of 1 kg and a velocity vb = 1.2i-j+1.8k m/s

93. ## math

input 2,4 and 10 output 5,9 and 21 I do not get it at all please help me.

94. ## World History

Lenin’s revolutionary policies included

95. ## math

what does answered belowed mean Damon does that mean I am right or wrong?

96. ## economics

If there was no item in the economy widely accepted in return for goods and services, how would transactions be made? How efficient would such a system be

97. ## Macro economics

If Coke sells for \$1.20 Canadian and for .75 pounds in the U.K., determine what the exchange rate should be if purchasing power parity hold

98. ## economics

What are the two problems facing the Bank of Canada in trying to control the money supply precisely

99. ## math

What is 600x600?

100. ## economics

If the chartered banks decide to maintain an average reserve ratio of zero, what would be the size of money multiplier

101. ## Math

To the nearest tenth,what is the circumference of a circle with an area of 49pi?

102. ## Physics

A rectangular aluminum plate has an area of 0.41 m2 at 23°C. If it is heated until its area has increased by 4.4 10-6 m2, what is the final temperature of the plate? °C