# Questions Asked onFebruary 8, 2008

1. ## Algebra

What Do You Call It When Someone Pays Back a Loan Quickly? I would Really Apreciate To Get The answer.

2. ## Physics

What is the diameter of a 1.00 meter length of tungsten wire whose resistance is 0.32 ohm (electrical resistance)?

3. ## Biology -Nervous System

1. Explain why the knee-jerk and Achilles reflexes are important in walking.

4. ## Biology -Nervous System

A person touches a stove, withdraws his or her hand, and then yells. Why does the yelling occur after the hand is withdrawn? Does the person become aware of pain before the hand is withdrawn?

5. ## Physics

A 10,000N car comes to a bridge during a storm and finds the bridge washed out. The 650-N driver must get to the other side, so he decides to try leaping it with his car. The side the car is on is 16.6 m above the river, while the opposite side is a mere

6. ## AP Physics

A small solid marble of mass m and radius r will roll without slipping along the loop-the-loop track if it is released from rest somewhere on the straight section of the track. For the following answers use m for the mass, r for the radius of the marble, R

7. ## Probabilty/Statistics

1)A coin is tossed 5 times. Find P(at most 4 tails.) A)3/16 B)13/16 C)1/32 D)31/32 I chose D 2)How many different arrangements of the letters of the word doodle are possible? A)180 B)720 C)15 D)90 I chose B For #3-5, use the following tepereatures from

8. ## Chemistry

use the table below to calculate ΔHo reaction: Standard Enthalpies of Formation, ΔH˚fٍ at 298 K Substance - Formula - ΔH˚ƒ(kj/mol) Acetylene C2H2(g) 226.7 Ammonia NH3(g) -46.19 Benzene C6H6(l) 49.04 Calcium Carbonate CaCO2(s) -1027.1 Calcium Oxide

9. ## Math

A printer has 15 rolls of newsprint in a warehouse. What fractional total will remain (in lowest terms) after 10 rolls are used?

10. ## Physics II

The heating element of an electric oven is designed to produce 3.3 kW of heat when connected to a 240-V source. What must be resistance of the element?

11. ## Biology -Nervous System

While examining the victim of a serious car accident, a physician lightly pokes the patient's leg with a needle. The pokes begin near the ankle and gradually progress toward the knee. Why is the physician poking the patient? Why begin near the foot?

12. ## AP Physics

A 1050kg car has four 15kg wheels. When the car is moving, what fraction of the total kinetic energy of the car is due to the rotation of the wheels about their axles? Assume that the wheels have the same rotational inertia as uniform disks of the same

13. ## AP Physics

At time t=0, a 2kg particle has position vector r=(5.0m)i+(-8.0m)j relative to the origin. Its velocity just then is given by v=(-5.0t^2m/s)i. For the following answers, use t for the time. A) About the origin and for t>0, what is the particle's angular

14. ## AP Physics

A uniform thin rod of length 0.3m and mass 3.5kg can rotate in a horizontal plane about a vertical axis through its center. The rod is at rest when a 3g bullet traveling in the horizontal plane of the rod is fired into one end of the rod. As viewed from

15. ## chemistry Ap

How much heat must be added to 50.0g of aluminum metal at 25 degrees C to raise its temperature to 125 degrees C? I have about 20 of these left so if you can do this and work it out and show me how you did it it would be great so I can use it as a guide

16. ## science

View the succession of the ecosystem in the Succession animation. Is it primary or secondary succession? Explain your answer.

17. ## Algebra2

Complete parts a – c for each quadratic function. a. Find the y-intercept, the equation of the axis of symmetry and the x-coordinate of the vertex. b. Make a table of values that includes the vertex. c. Use this information to graph the function. 1. f(x)

18. ## Algebra 2

Operations with Complex Numbers Simplify. 1. sqrt(-144) 2. sqrt(-64x^4) 3. sqrt(-13)*sqrt(-26) 4. (-2i)(-6i)(4i) 5. i13 6. i38 7. (5 – 2i) + (4 + 4i) 8. (3 – 4i) – (1 – 4i) 9. (3 + 4i)(3 – 4i) 10. (6 – 2i)(1 + i) 11. (4i)/(3+i) 12. (10+i)/(4-i)

19. ## managerial economics

The MorTex Company assembles garments entirely by hand even though a textile machine exists that can assemble garments faster than a human can. Workers cost \$50 per day, and each additional laborer can produce 200 more units per day (i.e., marginal product

20. ## chemistry

In a calorimetry experiment in the lab, you were able to record the following data: Mass of water in a calorimeter = 90.0 g Initial temperature of water in calorimeter = 22.0o C Mass of unknown metal = 45.0 g Initial temperature of hot metal = 100.0o C

21. ## Algebra

1. Juanita has 180 feet of fencing that she intends to use to build a rectangular play area for her dog. She wants the play area to enclose at least 1800 square feet. What are the possible widths of the play area? 2. A bicycle maker sold 300 bicycles last

22. ## Algebra

1. Juanita has 180 feet of fencing that she intends to use to build a rectangular play area for her dog. She wants the play area to enclose at least 1800 square feet. What are the possible widths of the play area? 2. A bicycle maker sold 300 bicycles last

23. ## Chemistry

250-mL volumetric flask, 125 mL of a 6.0 M hydrochloric acid was added. This was then diluted with more water to reach the 250-mL mark. What is the molarity of the acid at this time? Initial: M1 = 6.0 M hydrochloric acid V1 = 125 mL = 0.125 L Diluted: M2 =

24. ## Algebra2

Complete parts a – c for each quadratic function: a. Find the y-intercept, the equation of the axis of symmetry and the x- coordinate of the vertex. b. Make a table of values that includes the vertex. c. Use this information to graph the function. 1.

25. ## algebra

The sum of the first n counting numbers 1 + 2 + 3 + 4 + 5 ... + n is given by S = n/2(1 + n). a) Find the sum of the numbers 14 to 40 inclusive Answer is 729. But i don't get why. Someone explain what the qestion means by "inclusive" please >

26. ## algebra

The sum of the swuares of the first n counting numbers: 1² + 2² + 3² + 4² + 5² + 6² + ... +n² is given by the formula S = n(n+1)(2n+1) ------------ 6 Find the sum of the squares of all the counting numbers between 15 and 35. - answer is 12445; how

27. ## biology

blank is characterized by complex food webs, many different species of organisms, and little or no succession

28. ## Chem

In an experiment 16.81 +/- 0.02 grams of hydrogen peroxide chemically decomposes into the products water and oxygen gas. The measured mass of oxygen gas produced in the reaction is 8.854 +/- 0.003 grams. Report the mass of water produced to the correct

29. ## Chem

In an experiment 16.81 +/- 0.02 grams of hydrogen peroxide chemically decomposes into the products water and oxygen gas. The measured mass of oxygen gas produced in the reaction is 8.854 +/- 0.003 grams. Report the mass of water produced to the correct

30. ## managerial economics

The Largo Publishing House uses 400 printers and 200 printing presses to produce books. A printer's wage rate is \$20, and the price of a printing press is \$5,000. The last printer added 20 books to total output, while the lat press added 1,00 books to

31. ## AP Physics

Two particles, each of mass m and speed v, travel in opposite directions along parallel lines separated by a distance d. A)Find an expression for the magnitude L of the angular momentum of the two-particle system around a point midway between the two

32. ## Physical Science

Hello, Can some one tell me if I came to the correct answer... Thank You For coal- 0.314 How much heat energy is required to raise the temperature of 5 kilograms of coal from 20 degrees celsius to 220 degrees celcius? my answer: 1,314,718 J

33. ## Algebra

Clark's Rule is commonly used to calculate the childresn's dosage of medication: Clark's Rule is: C=A x W/150 Use the rule to calulate thr problem C- child's dose A= adult's dose W=weight of child in pounds How much would a child need to weigh to receive

34. ## Math

Write an equivalent FRACTION to 5/8 that has a denominator of 40 then reduce 25/40 = 5/8 or would the answer still be 25/40

Operating leverage is the extent of which fixed cost are used in a firm's operations. Is there a risk of having both high operating leverage and high financial leverage?

36. ## Chemistry

Did I do this correctly or do I need to try again? What is the mass percent of a solution when 18.6 g of table salt is added to 81.4 g of water? Mass Percent = mass of solute(g)x100 mass of solution (g) = 18.6 g x100 18.6 g + 81.4g = 18.6 g x 100 100g =

37. ## Science HELP 2nd question

A sample originally contained 2.5 g of rubidium 87 now contains 1.25 g. The half life of rubidium - 87 is 6 x 10 ( to the 10th) years. How old is the sample? Is this possible? why or why not?

38. ## Religion

What are the central beliefs of Islam and how are they reflected in the Five Pillars?

39. ## Economics

I am taking Microeconomics. I have the following question: The cost of producing stero systems has fallen over the past several decades. a) Use the supply-and-demand diagram to show the effects of falling production costs on the price and quantity of

40. ## physics

An air filled parallel plate capacitor has plates of area 0.0406 m^2 and seperation of 2.5*10^-6 m. a)What is the capacitence for the setup? b)Our capacitor is connected to a 550 v battery, how much energy is stored in the capacitor? c) If -1 mJ of work is

41. ## Chemistry

Predict the sign of ( ∆H) in each of the following reactions: NH3 (g) + HCl (g) NH4Cl(s) ∆S = +, ∆G = - Fe (s) + Cu+2 (aq) Fe+2 (aq) + Cu(s) ∆S = +, ∆G = - Cl2 (g) + 2Na (s) 2NaCl (s) ∆S = +, ∆G = -

42. ## algebra math

The following pie chart represents the results of a survey about whether people in a certain town have cats or dogs as pets. Neither 6% Both 22% Cats only 28% Dogs only 44% If there is 300 people in the town, how many people have neither cats nor dogs?

43. ## Calculus

integral -oo, oo [(2x)/(x^2+1)^2] dx (a) state why the integral is improper or involves improper integral *infinite limit of integration (b) determine whether the integral converges or diverges converges? (c) evaluate the integral if it converges I know

44. ## science

The concentration unit used in Raoult's Law calculations is: a. mole fraction b. percent by weight c. molarity d. molality e. none of these I think the answer is A... is is corrent ?

45. ## Physical Science

I need help with the following question... Thank You One degree celsius indicates the same temperature change as... one degree fahrenheit one kevin 5/9 degree fahrenheit 9/5 kelvin

46. ## Algebra

Clark's Rule is commonly used to calculate the childresn's dosage of medication: Clark's Rule is: C=A x W/150 Use the rule to calulate thr problem C- child's dose A= adult's dose W=weight of child in pounds How much would a child need to weigh to receive

47. ## Math

Write an equivalent FRACTION to 5/8 that has a denominator of 40

48. ## microbiology

What would happen if I omitted adding Gram's Iodine in the Gram Stain procedure?

49. ## Logic

For each of the following enthymemes, identify the premise(s) and the conclusion, and fill in any missing premises or missing conclusions. If possible, fill in what is missing in such a way as to make the arguments valid. It is possible that nothing

50. ## Algebra

The Occupational Safety and health Administration (OSHA) estblished permissible sound exposures in the work-place. This is modeled by the equation: S=-2.817H + 108.9 Use the formula for the problem: S=maximun permissible sound level in decibels H=number of

51. ## algebra

The following graph shows the enrollment at a community college. 1997 6,000 1998 8,000 1999 10,000 2000 12,000 2001 14,000 what was the increase from 1997 to 2001?

52. ## Algebra

The Occupational Safety and health Administration (OSHA) estblished permissible sound exposures in the work-place. This is modeled by the equation: S=-2.817H + 108.9 Use the formula for the problem: S=maximun permissible sound level in decibels H=number of

There are 3.29g of iodine -126 remaining in a smple originally containing 26.3 g of Iodine - 126 the half life of Iodine - 126 is 13 days. How old is the sample? At study hall test is after lunch and cant figure out htese 2 on my review packet

54. ## Math

The improper fraction 24/7 can be written as what mixed number? _______ (separate the whole number part from the fractional part with a space.... Write the answer like 4 5/6) is the answer 3 3/7

55. ## Physics

A satellite is in orbit 2500km above the surface of Earth. What is the velocity of the satellite in m/s?

56. ## science fair

I am taking Microeconomics. I have the following question: The cost of producing stero systems has fallen over the past several decades. a) Use the supply-and-demand diagram to show the effects of falling production costs on the price and quantity of

58. ## To Kill a Mockingbird

How old is Boo Radley? I'm writing a creative essay about him and I'd like to include his age... Do you know? Thanks in advance

59. ## Economics

I am taking Microeconomics. I have the following question: The cost of producing stero systems has fallen over the past several decades. a) Use the supply-and-demand diagram to show the effects of falling production costs on the price and quantity of

60. ## Probability

1)A coin is tossed 5 times. Find P(at most 4 tails.) A)3/16 B)13/16 C)1/32 D)31/32 I chose D 2)How many different arrangements of the letters of the word doodle are possible? A)180 B)720 C)15 D)90 I chose B For #3-5, use the following tepereatures from

61. ## Math

how would you factor 4x-x^2-3/ x-1...so that x-1 would cancel out? could you explain step by step..plz

62. ## Physics

Find the attracting force between 2 people sitting .08 meters apart. One person has a mass of 62kg and the other 80kg.

63. ## Physics

The average radius of the earth is 6.38*10^6m. Is the diameter just twice that or 12.8*10^6m. The circumference is 6.28(6.38*10^6)=40.1*10^6m

64. ## Physical Science

Hello, I wanted to know if I came to the correct answer in the following problem... Thank You I used: I=LK(To-Tf) LD=L-I A silver bar 0.125 meter long is subjected to a temperature change from 200 degrees celsius to 100 degrees celsius. What will be the

65. ## criminal justice

Differences between the four major communication styles. Benefits of using particular communication styles. The importance of the communication process in law enforcement."

66. ## Physical Science

Hello, Can some one tell me if I came to the correct answer... Thank You How much heat energy is required to raise the temperature of 5 kilograms of coal from 20 degrees celsius to 220 degrees celcius? my answer: 1,314,718 J

67. ## help huge test friday science

I cant grasp half life - the study guide question is how is half life dating used by scientists - I have 2 lines to write an answer

68. ## science

The concentration unit used in Raoult's Law calculations is: a. mole fraction b. percent by weight c. molarity d. molality e. none of these I think the answer is A... is is corrent ?

69. ## science

223 RA arrow + 4 88 a 2 complete the following reaction

70. ## algebra

Complete ordered pairs for y=4x+12 (_,0), (3/4,_), (0,_), (-3/4,_)

71. ## English

Can you explain what a conflict is for a book report.

72. ## Math

Is it possible to have a 15/16 inch pipe with an inside diameter of 31/32 inch? No

73. ## Pre-Algabra

Unfortunately for mariners, the total amount of wave energy in a storm doesnt depend on the first power of wind speed, but on the fourth power. The seas generated by forty knot wind arent twice as violent as those from a twenty knot wind, they are 17 times

74. ## Algebra2

Simplify: 1.SquareRoot(-144) 2.SquareRoot(-64x^4) 3.SquareRoot(-13)*SquareRoot(-26) 4.(-2i)(-6i)(4i) 5. i^13 6. i3^8 7.(5 – 2i) + (4 + 4i) 8.(3 – 4i) – (1 – 4i) 9.(3 + 4i)(3 – 4i) 10.(6 – 2i)(1 + i) 11. (4i)/(3+i) 12. (10+i)/(4-i) 13. (-5 +

75. ## language

what would be a simplified reason to tell grade ones why there is valentines day? What does it mean? why do people receive cards?

76. ## science thanks dr bob

last one thanks dr bob why are nuetrons easier to use for nuclear bombardment than alpha or beta particles

77. ## Chemistry

Do I have this right? Which one of these is the solute and which one is the solvent in a solution composed of a.) 25.0 g. of silver in 5.0 g. of mercury, and b.) 3.0 g. of iodine (I2) in 100.0 mL of ethanol? a.) Mercury is the solute and silver is the

78. ## World History

How is farming in Africa and the Pacific Islands similar?

79. ## Math

A 16 ounce container of a solvent must be mixed with 48 ounces of water. What fraction of solvent is there in the total mixture (lowest terms)?

80. ## Math

If the rise of a roof is 8 feet and the run is 2 feet 8 inches, what is the pitch of the roof in lowest terms when written as a FRACTION?

81. ## economics

A country's excess of quantity demand is a nation's imports or exports?

82. ## Physics

If you fell into a hole in the Earth how long would it take to reach the center of the earth if your velocity remained constant at 100mph?

83. ## Physics

A uniform electric field of magnitude 75 n/c is created at an angle of 33 degree relative to the positive x-axis. a)Find the voltage between the points (0.5m,0)& (0,0). b)find the value of y such that the voltage between the points (0.3 m, y) and (0,0) has

84. ## Calculus

evaluate the integral or state that it diverges. Check if I did it correctly. integral 0,1 dr/r^.999 lim b->0+ integral b, 1 1000r^.001 =-1000

85. ## US History

Somehow this question is supposed to relate to the Supreme Court I think? I need ideas... "How did World War II help redefine the United States' image in the world?"

86. ## science

223 RA arrow + 4 88 a 2 complete the following reaction

87. ## Algerbra

Simplfy. with not grouping symbols. 6x^2+9x-12 ___________ 2

asked by Erin. ( im confused)
88. ## chemistry

what is the name for a solution that can dissolve no more solute ?

89. ## Psychology

Where was the Rorschach ink blot test created? I know it was created by a Swiss psychologist Hermann Rorschach but where?

90. ## algebra

I don't know how to find the GCF if the variables are different. For example, 48a^3 and 16b^5.

91. ## Physics

If you were to jump from an airplane at an altitude of 15000 ft. and fall toward the Earth at 100 mph how long would it take to reach the surface?

92. ## science

Predict the sign of ( ∆H) in each of the following reactions: NH3 (g) + HCl (g) NH4Cl(s) ∆S = +, ∆G = - Fe (s) + Cu+2 (aq) Fe+2 (aq) + Cu(s) ∆S = +, ∆G = - Cl2 (g) + 2Na (s) 2NaCl (s) ∆S = +, ∆G = -

93. ## chem

What is the name for the solution that can dissovlce no more solutte? a.unsaturated b.saturated c.supatersaturated

94. ## Psychology

When was the California Psychological Inventory created?

95. ## Math

A 16 ounce container of a solvent must be mixed with 48 ounces of water. What fraction of solvent is there in the total mixture (lowest terms)? equals 16/64= 1/4

96. ## Physics

If you fell into a hole in the Earth how long would it take to reach the center of the earth if your velocity remained constant at 100mph?

97. ## Environmental Science

Where can I find the salinity of the soil in the Amazon Rainforest?

98. ## Math

Write an equivalent FRACTION to 3/7 which has a numerator of 114.

In March 1988, Daniel E. Beren, John M. Elliot, and Edward, F. Mannino formed Walnut Street Four, a general partnership, to purchase and renovate an office building in Harrisburg, Pennsylvania. They borrowed more than \$200,000 from Hamilton Bank to