# Questions Asked onJuly 23, 2012

1. ## physics

An object carries a charge of -8.0 uC, while another carries a charge of -2.0 uC. How many electrons must be transferred from the first object to the second so that both objects have the same charge? Qavg = (object 1 + object 2)/2 Qavg= -5uC Object 2- Qavg

2. ## Physics

Two cars have identical horns, each emitting a frequency of f= 395 hz. One of the cars is moving with a speed of 12 m/s toward a bystander waiting at a corner, and the other car is parked. The speed of sound is 343 m/s. what is the beat frequency heard by

3. ## cild care

Which one of the following statements about childcare centers is correct? A. Childcare centers can't get a license unless they apply to enroll in a QRIS system. B. Childcare centers are automatically enrolled in a QRIS system when they apply to be

4. ## English 3

1.) Identify the main clause in the sentence below. Then decide if the subordinate clause is used as noun, adjective, or adverb. The clams, which he ate, were still fresh. Main Clause: which he ate Subordinate clause type: Adjective 2.)Identify the

5. ## English 3

Identify the subordinate clause and tell if it is used as a noun, adjective, or adverb. Click on the blue box until the correct answer appears. When he laughed maliciously at the little girl, she kicked Mike in the shins. Subordinate clause:When he laughed

6. ## History

Discuss the differences and similarities in post-independence policies in India and Egypt. Please help me with this question If you could give me a little summary of each country it would be amazing. Its the only q I have left on this assignment.

7. ## Quantitative Chemistry

Ignoring activities, determine the molar solubility (S) of Zn(CN)2 in a solution with a pH = 2.92. Ksp (Zn(CN)2) = 3.0 × 10-16; Ka (HCN) = 6.2 × 10-10. Completely lost!

8. ## science

when a 424-g of iron powder is burned in an oxygen atmosphere, 0.606-g of a reddish brown oxide is obtained. Determine the empirical formula of the oxide.

9. ## Physics

An object carries a charge of -8.0 ìC, while another carries a charge of -2.0 ìC. How many electrons must be transferred from the first object to the second so that both objects have the same charge? Qavg = (object 1 + object 2)/2 Qavg= -5ìC Object 2-

10. ## math

Amy can clean the house in 7 hours. When she works together with Tom, the job takes 5 hours. How long would it take Tom, working by himself, to clean the house?

11. ## calculus

At noon, ship A is 100 kilometers due east of ship B. Ship A is sailing west at 12 k/h and ship B is sailing S10degrees west at 10 k/h. At what time will the ships be nearest each other and what will this distance be? (hint: You do not have a right

12. ## science

Two machines A and B produce respectively 60% and 40% of the total number of items of a factory. The percentages of defective output for A and B are 3% and 2% respectively. Suppose an item is selected at random, and is found to be defective. The

13. ## math

Frank can type a report in 4 hours and James takes 6 hours. How long will it take the two of them typing together?

14. ## physics

A 20 g bullet moving horizontally with a speed v hits a 2-kg block of wood resting on a table. After hitting the block the bullet is embedded in the block of wood and the block and the bullet moves a distance of 40 cm before it stops. If the coefficient of

15. ## calculus

A trough has a trapezoidal cross section with a height of 5 m and horizontal sides of width 2.5 m and 5 m. Assume the length of the trough is 14 m. How much work (in joules) is required to pump the water out of the trough (to the level of the top of the

16. ## English 3

Identify the main clause in the sentence below. Then decide if the subordinate clause is used as noun, adjective, or adverb. Chris's chief interest was tennis, which he was just learning to play. Main Clause: Chris's chief interest was tennis Subordinate

17. ## Accounting 2301

For Capital, the category of account and its normal balance are: A. Assests and a debit balance B. Liabilities and a credit blance C. Owner's Equity and a credit balance D. Owner's equity and a debit balance

18. ## cis 324

Your sister owns a small clothing store. During a conversation at a family dinner, she mentions her frustration with having to manually track and reorder high demand items. She would like an automated system but has a very small budget

19. ## Physics

Two cylindrical rods are made of the same material and have the same length but one is hollow and other is solid. Both are heated to same increase in temperature. Which rod expands more? From my understanding of linear thermal expansion, linear thermal

20. ## English 3

Identify the main clause in the sentence below. Then decide if the subordinate clause is used as noun, adjective, or adverb. After we have read the story, we will talk about it. Main Clause: After we have read the story Subordinate clause type: noun

21. ## Math

A team has won 60% of the games it has played so far. If the team wins the 15 remaining games in the season, it will have won 80% of the season's games. How many games will the team play over the entire season?

22. ## Math

If business manager deposits \$30,000 in a savings account at the end of each year for twenty years what will be the value of her investment at a compound rate of 12 percent? and at 18 percent?

23. ## Statistics

The annual precipitation for one city is normally distributed with a mean of 72 inches and a standard deviation of 3.5 inches. In 95% of the years, the precipitation in this city is between___ and ___

24. ## calculus

Compute the derivative for the following: n(x) = sin(x^3-5x^2+4x-7) Thanks, andy

25. ## Chem 22

2.00 grams of hydrocarbon warmed 150.0 ml. water from 25.0 degree C to 30.0 degree C. Calculate the heat of hydrocarbon in K/g. the specific heat of water is 4.184 J/g. degree C

26. ## Chemistry

A radiator is to be protected against freezing to -20f. Calculate the volume of C2H4(OH)2 ethylene glycol per liter of water. Density of glycol is 1.11 g/ml

Mr. Currie pours himself some coffee into a paper cup before making his way to the amusement park. The coffee temperature is 350C when the cup is placed on the kitchen counter with room temperature of 20o C. Mr. Currie was called to the phone for last

It is a beautiful sunny day at Canada’s Wonderland. The U.V. index for this day is 8, or high, so sunscreen is a must for all people. The effectiveness of sunscreen is indicated by the sunscreen protection factor (SPF). The higher the SPF number the

29. ## Chemistry

How would you separate a mixture of potassium chloride from copper metal?

30. ## college

Consider a normal population with μ = 36 and σ = 4.9. Calculate the z-score for an x of 47.6 from a sample of size 14. (Give your answer correct to two decimal places.)

31. ## math

A river has a current of 4 mph. Find the speed of Simon’s boat in still water if it goes 40 miles downstream in the same time as 24 miles upstream.

32. ## writing

The package arrived yesterday. The package is from our Japan office. It contains the documents we need.

33. ## Maths

Two thirds of a pizza is shared between 5 friends bob eats twice as much as any of the others. What fraction of the pizza does bob eat ?

34. ## physics

What does it mean to say the Coulomb Force is a conservative force? This is what I have compiled, but I still feel like I'm missing something. A conservative force is one in which energy cannot be created nor destroyed, and with the property that the work

35. ## statistics

One of the problems with a study such as this one is the small size of the samples. If you wanted to estimate the proportion of a certain color of candy to within 2% of the actual proportion, how many individual pieces of candy must you sample? Assume you

36. ## Chem 22

3.5 cm of Mg ribbon(0.009729 g/cm0 reacts with HCL to produce 32.6 ml. of Hydrogengas at 750 mm Hg and 20 degree C. the vapor pressure of water at 20 degree C is 17.5 mm Hg. Calculate the molar volume of hydrogen (L/mole) and the percent error in your

37. ## math

diameter of coin is 26 mm inlength.Find circumference & area of coin .

38. ## chemistry

H3PO4 reagent solution in a lab is 85%pure.specific gravity of H3PO4 solution is 1.69.find out the normality of H3PO4.

39. ## physical

A highway of concrete slabs is to be built in the Libyan desert, where the highest air temperature recorded is 57.8 °C. The temperature is 23.1 °C during construction of the highway. The slabs are measured to be 11.7 m long at this temperature. How wide

40. ## Physics

In a Milliken type experiment, two horizontal parallel plates are 1.0 cm apart. A sphere of mass 2.2 x 10^(-13) kg remains stationary when the potential difference between the plates is 350V with the upper plate is negative. How much excess or deficit of

41. ## science

how might the environmental impacts of deforestation and sprawl affect the human community of Pinchot

42. ## College algebra

If the domain and range of a function consists of real numbers, then you can graph it by plotting all ordered pairs (x, f(x)). Remember "y" = f(x). How can you tell by looking at a graph if it represents a function?

43. ## Integrated Math 1

Which of the following may constitute a population? (choose all that are correct.) A. all rats in New York. B. all nurses in a hospital. C. all skyscrapers in Chicago. D. all brown-haired people in Oslo.

44. ## Math - Trigonometry

The Earth travels in a circular orbit around the Sun at 29.79 km/sec. If the radius of the orbit is 1.496  108 km, what is the angular velocity in radians/sec? (Round to three significant digits.)

45. ## college statistic

A sample of 51 night-school students' ages is obtained in order to estimate the mean age of night-school students. x = 26 years. The population variance is 19. (a) Give a point estimate for μ. (Give your answer correct to one decimal place.) (b) Find the

46. ## Math

Based on the information given for each of the following studies, decide whether to reject the null hypothesis. For each, give (a) the Z-score cutoff (or cutoffs) on the comparison distribution at which the null hypothesis should be rejected, (b) the Z

47. ## PHYSICS!

IMAGINE- a building 6400km. high. On the ground floor, a person weighs 175lbs when he steps on a spring scale how much would the man weigh on the same scale if he were standing at the top floor? HINT: Note that 6400km is also the radius of the earth so

48. ## English

Give a definition of an uncountable and a countable nouns and examples PLEASE and THANK YOU!

49. ## psychology

what is all the components of scientific method in psychology? i got hypothesis, dependent ans independent, and the question is does television increase aggression? how to put it in the dependent and independent variable?? and how to set everything up? I

50. ## Math - Trigonometry

The Earth travels in a circular orbit around the Sun at 29.79 km/sec. If the radius of the orbit is 1.496 x 10^8 km, what is the angular velocity in radians/sec? (Round to three significant digits.)

51. ## physics

The label on a soft drink states that 11 fl. oz (325 g) provides 285 kcal. The drink is cooled to 12.0°C before it is consumed. It then reaches body temperature of 37°C. Find the net energy content of the drink. (Hint: You can treat the soft drink as

52. ## Math

Using the Borda Count Method, find the winner of the election A has 3106 votes B has 3134 votes C has 2816 votes D has 3024 votes

53. ## Math

Using the Borda Count Method, find the winner of the election A has 3106 votes B has 3134 votes C has 2816 votes D has 3024 votes

54. ## to ms.sue-project

okay and why this afternoon?

55. ## Chem 22

3.5 cm of Mg ribbon(0.009729 g/cm0 reacts with HCL to produce 32.6 ml. of Hydrogengas at 750 mm Hg and 20 degree C. the vapor pressure of water at 20 degree C is 17.5 mm Hg. Calculate the molar volume of hydrogen (L/mole) and the percent error in your

On the moon, the downward acceleration dur to gravity is only about one-sixth as large as it is on earth. if a 16 kg rock is put on a spring scale on the moon. What would the scale read? Give your answer in newtons.

57. ## physical

Steel rails for a train track are laid in a region subject to extremes of temperature. The distance from one juncture to the next is 4.41 m, and the cross-sectional area of the rails is 60 cm2. If the rails touch each other without buckling at the maximum

58. ## Math

Private donor is wlling to contribute \$10 million per year at the beginning of each year fro 15 years What is the current dollar value if the discount rate is 14%

59. ## algebra 2

The MePhone, a new smartphone, is being introduced in the Louisville area. The manufacturer plans to sell 30,000 phones during the first week and expects sales to increase by 8% each week after that find the equation, determine if its aritmetic or

60. ## tle

how to make simple flowchart?

61. ## physics

When a mover pushes with a constant sideways force of 20 N on a 15 kg box, the box moves along the floor at a constant speeed of 2m/s, What is the net force on the box?

62. ## chemistry

How to equation 7.9 = 7.21+log((0.105 -4.2x)/4.2x) ? What is the value of x?

1. Suppose quality control inspectors at the coffee house chain take a sample of 100 pieces of this chocolate product from an incoming shipment. They find a sample average of 60% cacao with a standard deviation of 8%. What is the standard error of the

64. ## Statistics

The amount of a monthly phone bill is normally distributed with a mean of \$60 and a standard deviation of \$12. Fill in the blanks: 68% of her phone bills are between \$______________ and \$______________.

65. ## statistics

Given that x is a normally distributed random variable with a mean of 60 and a standard deviation of 10, find the P(56 < x 56.)Please write your answer in a complete sentence.

66. ## Early Childhood Development

The basic perceptual system is in place at birth

67. ## Math

car A costs 20% less than car B. Car B is twice as expensive as car C. Car C costs what percent of Car A?

68. ## Math

Circle X has an area of 36pie, and a circle Y has an area of 18pie. What is the ratio of the circumference of X to the circumference of Y.

69. ## Finite Math

Let A,B be events in a sample space. you are given the following probabilities: P(A)=0.8, P(B|A)=0.3, P(B|A^c)=0.8 Find: 1) P(B) 2) P(A|B) 3) P(A^c|B^c)

70. ## bege101

write a passage using rhetorical devices on a person ,idea or ideology in about 300 words

71. ## history

uniforms of united states police

72. ## I absolutely need help!!Math:/

One liter of arterial blood at sea level contains approximately 3 mL of dissolved oxygen and 197 mL of oxygen bound to hemoglobin. If a normal individual has a cardiac output at rest of 5 liters per minute, how much oxygen is carried to the tissues per

73. ## Vessels..Logical question??

A classmate who has been standing still for several hours working on a laboratory experiment suddenly faints. Based on what was studied in this unit, what is the probable explanation?

74. ## life orientation

describe five sentences the importance of mananging ones finances.

75. ## chemistry

I'm adding this to my previous question..in our textbook its says Ecell=Ecathode-Eanode. That's my values were smaller. But you added them. Will that make a difference? Should I do it the way you did it? Because they have to be bigger numbers? Thank you.

76. ## Math

the radius of a cylindrical tank is enlarged so that its radius is twice larger than before. How much largerthe volume of the enlarged tank is?

77. ## math

convert to polar form: 1) x^2-y^2=4 (You may leave your answer for this one as r2 =) 2) x^2+(y-1)^2=1

78. ## to ms.sue- project

can you help me with my project now. I need to finish my writing but I don't know how to end it

79. ## Physics

I had a two part question in which I'm fairly sure I did the first part correct, but part b I am unsure about. For part a, I had to determine the magnitude of the net electric field at the origin, which I got E= 1.7 X 10^7 N/C. Part b)if a point charge of

80. ## CJS/210

I need help finding reliable information on the following questions? What trends are currently affecting policing? What are some foreseeable critical issues that may affect policing in the future? What changes may need to be made to effectively address

81. ## CJS/230

Will someone please help me find a webite to answer the following questions? What are community corrections? How do community corrections affect the society in which they are practiced? What hypothesis can you make about community corrections and their

82. ## history

What was the role of the Empire in World War I?

83. ## science -chemistry

Mr. Currie pours himself some coffee into a paper cup before making his way to the amusement park. The coffee temperature is 350C when the cup is placed on the kitchen counter with room temperature of 20o C. Mr. Currie was called to the phone for last

84. ## Physics

the 7kg brick described as (horizontal force of 42N, frictional force of 18 N)is now dropped off a cliff. At one point during the drop the friction due to air resistance has a strength of 14N. what is the acceleration of the brick at this time

85. ## physical

An air-cooled motorcycle engine loses a significant amount of heat through thermal radiation according to the Stefan-Boltzmann equation. Assume that the ambient temperature is T0 = 22.3°C (295.45 K). Suppose the engine generates 13.5 hp (10.07 kW) of

86. ## physical

An ice cube at 0°C measures 13.9 cm on a side. It sits on top of a copper block with a square cross section 13.9 cm on a side and a length of 19.1 cm. The block is partially immersed in a large pool of water at 88.5°C. How long does it take the ice cube

87. ## algebra 1

write as a matrix 4x-7y+=-5 -6x+5y=2 write as an order pair

88. ## algebra 2

A company wants to make ball bearings that have a standard diameter, d, of 24.000 mm. Acceptable ball bearings measure within ± 0.025 mm of this standard. Determine the solution set for the diameter of these ball bearings

89. ## satistics

n=18,x=14,p=0.75 using binomial probablility

90. ## science-physics

a battery of 12v supplies a charge of 1000C to an electric device. how much work is done by the battery in moving the charge?

Canada’s Wonderland has a roller coaster named ‘Leviathan’. It boasts a maximum height of 93 m, 80⁰ drop, speeds of 148 kms and is 1673m long. At its maximum height Mr. Currie drops his gum from his mouth. The height of the gum can be given by the

92. ## Math

v __________ v v+_______ 1 2+_____ v-1

93. ## Chem

suppose you could not tell whether a material was insoluble or slightly soluble in water form the appearance of the misture. Explain what you would do to determine whether this substance is slightly soluble.

94. ## to ms.sue-project

can you help me with my project now?

95. ## to ms.sue project

not today, my mom said i have to close laptop, tomorrow in the morning

96. ## Math-Trigonometry

In Quadrant II, is the value of cosecant positive or negative?

97. ## math

diameter of coin is 26 mm in length find circumference & area of coin.Is 13 the answer for circumference of coin?

98. ## calculus

Find the continuity of the region bounded by the two curves. y=x^2 and y=3x?

99. ## American History

what did Lord Dunmore have to do with the house of burgesses?

100. ## mth 121

can you fine the dimensions of a rectangle with a perimeter of 94cm if the length is 2 less than six times the width

101. ## Mathematics

If n is an integer, how many different values of n satisfy the inequality -4 ≤ 3n ≤ 87? a) 32 b) 31 c) 30 d) 29 e) 28 i got (b) 31 but I'm not sure.

IMAGINE- a building 6400km. high. On the ground floor, a person weighs 175lbs when he steps on a spring scale how much would the man weigh on the same scale if he were standing at the top floor? HINT: Note that 6400km is also the radius of the earth so

103. ## Chemistry

You need to make 4200 mL of 0.450 M CuSO4. How many grams of CuSO4 do you need?

104. ## Science

You are a retired law enforcement officer who now teaches at a local community college in the criminal justice program. In addition to teaching ethics, you write crime novels on the side. You recently heard of a real-life case that you thought would make

105. ## Finance

why a firm might deviate from the matching principle by financing short-term assets with long-term debt. How would such a policy have affected a firm during the financial crisis?

106. ## English

Please for the definition of a concrete noun and an example.

107. ## chemistry

I have a question. For Fe|Fe^+2 (1M)| Cu|Cu^+2 (1M why did you use Fe^2+ ==> Fe^3+ + e Eo = -0.771 ? instead of: Fe ---> Fe^+2 + 2e ? thank you..

108. ## Complete Sentences

I don't really know how to start this "question" off with a complete sentence; Explain what you know about epilepsy.

109. ## English

What are common and proper nouns and examples.

110. ## Noun

What is collective noun and examples

111. ## math

A cyclist bikes at a constant speed for 18 miles. He then returns home at the same speed but takes a different route. His return trip takes one hour longer and is 23 miles. Find his speed.

112. ## geometry

The National Association for Women in Scienc asked recent high school grads if they had taken certain classes. of those surveyed, 95 said they had taken physics, 108 said they had taken chemistry and 12 said they had taken both. nine said they had taken

113. ## math

john takes 3hours longer than andrew to peel 400 pounds of apples. if together they can peel 400pounds of apples in 8hours then how long would it take john if he is working alone.

114. ## Math

At a local pound, 40% of the animals sheltered are cats and 15% of the cats are black. If there are 30 black cats at the pound, how many animals are sheltered there?

115. ## Math

A piece of paper is cut into 25 equal parts that are similar in shape to the original. what is the perimeter of one of the small pieces divided by the perimeter of the original piece of paper?

116. ## Math

If the length and the width of a rectangle are doubled, its area is increased by what percent?

117. ## Math

A rectangular field measures 50 yards by 100 yards. If it takes one quart of fertilizer to fertilize a 15-foot-by-30 foot section, how many GALLONS of fertilizer will be needed to fertilize the entire fields? (1 gallon = 4 quarts; 1 yard = 3 feet)