# Questions Asked onJune 22, 2009

1. ## chemistry

The heat capacity of object B is twice that of object A. Initially A is at 300 K and B is at 450 K. They are placed in thermal contact and the combination is isolated. The final temperature of both objects is:

2. ## physics

The energy given off by 300 grams of an alloy as it cools through 50°C raises the temperature of 300 grams of water from 30°C to 40°C. The specific heat of the alloy (in cal/g C ) is: i know Q=CpM(delta T) but what is what?

3. ## Physics

The engine of a motorboat delivers 30.0 kW to the propeller while the boat is moving at 15.0m/s. What would be the tension in the towline if the boat were being towed at the same speed? I know to use P=Fv and solve for F so P = 3000kN right because 1 kW =

4. ## chemistry

How do I prepare 10% w/v HCl from 37%(w/w) HCl (density 1.19g/ml)? Thanks.

5. ## 8math

What are the odds in favour for this event? getting a perfect square when two number cubes labelled 1 to 6 are rolled and the numbers are multiplied. i don't understand how to do this. please help. thank u :)

6. ## Physics

a fun loving 11.4kg otter slides up a hill and then back down to the same place. If she starts up at 5.75 m/s and returns at 3.75 m/s, how much mechanical energy did she lose on the hill and what happened to that energy

7. ## Mircoeconomics

A significant difference between monopoly and perfect competition is that: A. free entry and exit is possible in a monopolized industry but impossible in a competitive industry. B. competitive firms control market supply but monopolies do not. C. the

8. ## Physics

A 1200 kg car is moving on the freeway at 65 mph. (A) find the magnitude of its momentum and its kinetic energy in SI units. (b) if a 2400 kg SUV has the same speed asthe 1200 kg car, how much momentum and kinetic energy does it have?

9. ## Algebra

Simplify: Write answers in the form of a + bi, where a and b are real numbers. a. (1-2i)(1+3i) b. (3-5i)(8-2i)

10. ## linear programing.

The cheesy company produces two types of cheese with extra sharp cheddar cheese. The cheese spreads are packaged in 120 ounce containers, which are then sold to distributors throughout northeast. The regular blend contains 80% mild cheddar and 20% extra

11. ## organic chem

A student's correctly calculated value for the percent recovery of the purified unknown solid in a recrystallization experiment was 102%. Assume that the student performed all steps of the procedure correctly a) comment of the validity of this result;

12. ## Health

Who is responsible for paying \$250 major medical insurance before a company assumes liability?

13. ## Statistics

In a blood clinic, each donor is asked to write on a piece of paper if they are HIV positive or not. To maintain privacy, before the donor writes on the paper, he throws a six-sided dice. If the dice is 6, then he is supposed to write “HIV Positive”

14. ## Math

The question is this: You know that a number is divisible by 6 if it is divisible by both 3 and 2. So why isn't a number divisible by 8 if it is divisible by both 4 and 2? My answer is this: The only prime factors of 6 are 2 and 3. So, if a number is

15. ## math

You can use the prime factorization of a number, written as the product of powers of prime numbers, to find the number of factors the number has. First, express the number as a product of powers of prime numbers; for example, 36=2 to power 2 3 to power 3

16. ## Calculus

A rectangle is inscribed with its base on the x-axis and its upper corners on the parabola y=2-x^2 What are the dimensions of such a rectangle with the greatest possible area? Width=? Height=?

1) growth rates The stock price of the company is \$76 investors require a 14% rate of return on similar stocks If the company plans to pay a dividend of \$5.00 next year the expected growth rate of the company's stock price is ______ percent 2) non constant

18. ## college

imhaving a little bit of trouble starting my reaserch paper and a thesis on kiddnaping can i get an example

19. ## music

how can i do better at the flute and piano?

20. ## social studies

i need info for a project of something called boston massacre

21. ## bibliography

i am doing the reaserch paper on one of my uncles who disapeared if i found information of him on a website how would the bliography would be done and i also interviwed some family

22. ## Algebra

Suppose a farmer has 120 feet of fencing to make a rectangular barnyard enclosure. If the enclosure is x feet long, express the area A of the enclosure as a function of the length x.

23. ## geometry

how can we prove that an exterior angle of a triangle has measure equal to the sum of the measures of the 2 interior angles remote from it

24. ## medical billing and coding from Penn Foster

I was wondering if someone coould look at this report and let me if you think it is ok to hand in. The questions are: Does HIPAA affect the patient's access to his/her medical record?if so describe the effect and procedure to obtain access 2)under what 12

25. ## math 209

Area of a sail. The area in square meters for a triangle is given by A(x)=x^2 +5x +6. a.) Find A(5) b) if the height of the sail is x+3 meters, then what is the length of the base of the sail when area is x^2 +5x+6m^2?

verify that cos(90+A)=-sinA is an identity.

27. ## accounting

Can someone please tell me how to set these problems up? I am confused! Lear, Inc., has \$800,000 in current assets, \$350,000 of which are considered permanent current assets. In addition, the firm has \$600,000 invested in fixed assets. a.) Lear wishes to

Why is a company concerned about its stock price in the secondary market?

29. ## algebra help

Factor completely 4v^2+1-4v =____ another problem is factor completely 4s^2-81= ____

30. ## Literature

Can someone tell me if my statement below is correct? I have to write a paper on The Lottery comparing and constrasting the theme and style. I am not sure if my themes and styles are correct or if I have them mixed up. I have trouble with picking out the

If you were to purchase stock, what sort of information about the company’s stock would you use to make your decision to buy shares of a certain company?

32. ## acc 260

Philosophical Approaches to ethical decision making matrix

33. ## Algebra

How can algebra be used to solve this problem? The boy solved 10 problems correctly at 8 cents a problem for a total of 80 cents, and 16 incorrectly at the cost of 5 cents for a total of 80 cents. Therefore, neither the boy nor his father owed each other

34. ## Medical Coding

What is the two subheadings within the Cardiovascular System subsection?

35. ## Algebra

Please Find the difference quotient f(x+h)-fx/h for f(x)= 4x-9 and simplify

36. ## science

what does "microscopic" mean?

I need some help on calculating my current high school GPA. So far, I've completed 8 classes per year (I'm a sophomore, soon to be junior), making that 16 classes total. I also took two middle school classes that count for high school credit. Here's the

38. ## infinite mathematic

Section 6.8: Table1: Customer# Random# Time req. Teller Start time End Time 1 10 8 A 9:00 9:08 2 7 5 B 9:00 9:05 3 2 3 C 9:00 9:03 4 3 3 C 9:03 9:06 5 1 3 B 9:05 9:08 6 6 5 C 9:06 9:11 7 4 3 A 9:08 9:11 8 3 3 B 9:08 9:11 9 1 3 A 9:11 9:14 10 10 8 B 9:11

39. ## Math

I have a question that I answered and I'm not sure that it is right. Here is my question: Use a calculator to help you write the prime factorization of 51,051. Here is my answer: If the sum of the digits of the number is divisible by 3, then 3 is a factor

40. ## SAT

Is a 480 for math bad? Would the 660 I got on reading componsate for this?

41. ## Algebra

Let f (x) = x^2 – 3x + 8 and g(x) = x – 5. Find the sum (f + g) (x) and simplify the results.

42. ## math 209

Selling shirts. If a vendor charges p dollars each for rugby shirts, then he expects to sell 2000  100p shirts at a tournament. a) Find a polynomial R(p) that represents the total revenue when the shirts are p dollars each. b) Find R(5), R(10), and R(20).

43. ## math 209

Swimming space. The length of a rectangular swimming pool is 2x  1 meters, and the width is x  2 meters. Write a polynomial A(x) that represents the area. Find A(5).

44. ## catering

Which of the following is the fermenting agent that converts the wort into beer?

45. ## math

You can use the prime factorization of a number, written as the product of powers of prime numbers, to find the number of factors the number has. First, express the number as a product of powers of prime numbers; for example, 36=2 to power 2 3 to power 3

46. ## math

Find the LCM of the numbers 24 and 32 by using a. the listing multiples method.

47. ## elementry math

Find the LCM of the numbers 24 and 32 by using the prime factorization method.

48. ## elementry math

The product of two numbers is 180. The LCM of the two numbers is 60. What is the GCF of the numbers? Explain how you know.

49. ## math

You know that a number is divisible by 6 if it is divisible by both 3 and 2. So why isn’t a number divisible by 8 if it is divisible by both 4 and 2?

50. ## math

What characteristic do the numbers 8, 10, 15, 26, and 33 have that the numbers 5, 9, 16, 18, and 24 don’t have? (Hint: List the factors of the numbers.) Give two more numbers that have this characteristic.

51. ## math

Do you think that the formula where n is a whole number, will produce a prime number more than 50% of the time? Give evidence to support your conclusion.

52. ## history

how were the truman doctrine and the marshall plan relevant to the american foreign policy goal of containment?

53. ## crt/205

Controlling Irrational Fears After 9/11* We present this selection as an example of a fairly well-reasoned argumentative essay. There is more here than arguments—there’s some window dressing and you’ll probably find some slanters here and there as

54. ## physics repost bobpursley

The energy given off by 300 grams of an alloy as it cools through 50°C raises the temperature of 300 grams of water from 30°C to 40°C. The specific heat of the alloy (in cal/g C ) is: i know Q=CpM(delta T) but what is what? Responses * physics -

55. ## Math

I do not understand this problem can somebody please help me with it? Fill in the missing digits in as many ways as possible so the number will be divisible by 6. 3 _ 2 _ Thanks for the help.

56. ## Managerial economics

Which one is the best answer A !@#\$%^&-for-tat strategy may be implemented: a. as an attempt to cheat cooperating members of an oligopoly b. as an attempt to acquire market dominance and become a monopolist c. as a punishment strategy for cheating d. a and

57. ## Managerial Economics

Which one is the best answer 1.Agreeing to be part of a price-fixing cartel is: a.unlikely to yield maximum prices or profits for very long time b.difficult to maintain, but almost guaranteed to ensure maximum profit c.illegal in most countries d.a and b

58. ## Calculus

Find the point on the line -5sx+y+3=0 which is the closest to the point (2, 5) (___,___)

59. ## Calculus

A rancher wants to fence in an area of 5189400 square feet in a rectangular field and then divide it in half with a fence down the middle parallel to one side. What is the shortest length of fence that the rancher can use?

60. ## Calculus

If 6075 square centimeters of material is available to make a box with a square base and an open top, find the largest possible volume of the box. Volume=??? cubic cm

61. ## Calculus

A cylinder is inscribed in a right circular cone of height 8 and radius (at the base) equal to 2. What are the dimensions of such a cylinder which has maximum volume? Radius? Height?

62. ## Calculus

The manager of a large apartment complex knows from experience that 90 units will be occupied if the rent is 370 dollars per month. A market survey suggests that, on the average, one additional unit will remain vacant for each 5 dollar increase in rent.

63. ## Calculus

A Norman window has the shape of a semicircle atop a rectangle so that the diameter of the semicircle is equal to the width of the rectangle. What is the area of the largest possible Norman window with a perimeter of 22 feet?

64. ## Calculus

A fence 5 feet tall runs parallel to a tall building at a distance of 7 feet from the building. What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building? [Hint: Determine the length of a ladder

65. ## science

does anyone know if, orange juice is a pH indicator??

66. ## Calculus

Can someone prove (informally) the following theory: If there is a differentiable function, f, that is represented by a Taylor series, T, then the convergence interval for series T is identical to the convergence interval for the term-by-term derivative

67. ## HCA/270

what are the rules of thumb?

least of possible numberthat rounds to 510

69. ## Editing of Yr 6 exposition

One of te most common issues that as been endlessly open to debate is relative to ..... "junkfood". Banned of unlimited is the question that I have prepared to discuss in this short easy article including its pros and cons. Whether the sale of junkfood

70. ## Physics

A 61 kg skier on level snow coasts 184 m to stop from a speed of 12.0 m/s (A) use the work energy principle to find the coefficient of kinetic friction between the skis and the snow. B) suppose a 75 kg skier with twice the starting speed coasted the same

71. ## Science

How do the properties of methane relate to its molecular structure?

72. ## college

: Identify the fruit or vegetable you selected and relate the second law of thermodynamics to the changes in energy observed in Appendix C. How did the amount of energy gained compare to the amount of energy lost as heat at the second through fourth

73. ## organic.chem

Compound X, C8H17Cl, is a chiral product of the radical chlorination of 4-methylheptane. X reacts in SN2 fashion with NaI in acetone to form Z, C8H17I. When the reactant is the R-enantiomer of X, only the R-enantiomer of Z is formed. What is the structural

74. ## science

i need to make a p.h indicator in sience but i cant think of any other than.. tea bags, some sort of juice and.. red cabbage anyone got any sujestions?

75. ## Cooking

what is a simple recipe to bake brownies thanks:-D

76. ## medical billing and coding from Penn Foster

When writing a research paper and writing a reference page, should you include in the paper that you are writing the refence number after the sentence, or can you just list the references on a separate sheet of paper and call it done?