# Questions Asked onNovember 2, 2010

1. ## Calculus - integration

Integral of (2x+5sin(x))^2 dx i didn't know how to start this question so i expand the squre first and then did the rest but its wrong and i don't think my method is right. thank you.

2. ## Statistics

IQ test scores are normally distributed with a mean of 97 and a standard deviation of 11.An individual's IQ score is found to be 123.Find the z-score corresponding to this value

3. ## space

How many Earth Diameters would it take to reach the Sun 93,000,000 miles away?

4. ## Physics

A rock climber part way up a cliff face drops a piton and it falls for 2.0 s before hitting the ground. How high up is he?

5. ## science

If a car is at a stop and it has to travel 2 miles and its speed is zero to sixty in 9 seconds asuming that you give it full power how fast will it be traveling when it travels 2 miles?

4n+8=9n-7

7. ## science

what is the ratio of 8gm of sugar in 500ml of water

8. ## spanish

The class is organizing a “paella party.” Tell who is in charge of each task and use direct-object pronouns. 1. ¿Quién va a preparar la ensalada? Mirta y Lidia 2. ¿Quién va a limpiar el apartamento después de la fiesta? La profe

asked by AYUDA ME PORFAVOR!! :)
9. ## chemistry

A 13.0 mL sample of an unknown HClO4 solution requires titration with 25.2 mL of 0.180 M to reach the equivalence point. What is the concentration of the unknown HClO4 solution? The neutralization reaction is as follows: HClO4 +NaOH ===>> H2O +NaClO4

10. ## Chemistry

What wavelength of light would be emitted when an electron in a hydrogen atom drops from energy level 5 to energy level 1?

11. ## spanish

After the party, tell a friend who was in charge of each task. Use direct-object pronouns in your answers. ¿Quién compró los mariscos? Rosa ¿Quién preparó la ensalada? Mirta y Lidia ¿Quién limpió el apartamento después de la fiesta? La profe

asked by AYUDA ME PORFAVOR!! :)
12. ## Math

Graph the circle 4x^2+4y^2-24x-16y-29=0

13. ## ACC

Smithson Corporation had a 1/1/10 balance in the Allowance for Doubtful Accounts of $10,000. During 2010, it wrote off$7,200 of accounts and collected $2,100 on accounts previously written off. The balance in Accounts Receivable was$200,000 at 1/1 and

14. ## physics

A 2.38 × 103 kg car requires 5.4 kJ of work to move from rest to some final speed. During this time, the car moves 28.1 m. Neglecting friction, find a) the final speed. Answer in units of m/s.

15. ## chemistry

Is there a reaction? 2 NaNO3 + ht →

16. ## physics

It says, A plane travels 400 mi/h relative to the ground. There is a 25 mi/h wind blowing from the west to the east. Find the plane's resultant velocity as it: a. travels west: b. travels east: c. travels north: d. The plane's final destination is 1250

asked by spandana siram
17. ## Physics Help PLEASE!!!

A 10 kg ball moving due west at 2m/sec collided with a 4kg ball that is moving due east at 3m/sec. you determine that immediately after the collision the 10 kg ball is moving due west at .57 m/sec. a) this probably is a totally elastic collision b) this

18. ## math

I was given this by my teacher for extra credit 1 _ _ _ _ _ 1 _ the blanks are numbers from 0-9 excluding 1 since it was given. I need to know how many possible combinations are left and if there is a good website that will generate all the combinations.

asked by Karl Smith
19. ## CHEMISTRY

If a small stream of liquid A was strongly deflected by a charged object, liquid B was moderately deflected, and liquid C was weakly deflected rank the liquids in order of polarity. (Assume densities and charges are all equal.)

20. ## Algebra

Carl had packed 6 crates by 8 a.m. By 11 a.m., he had packed 24 crates. Find the average rate of change in crates packed from 8 a.m. to 11 a.m.

asked by need help!
21. ## math grade 11

I need help with this question determine the values in k for which the function f(x)= 4x^2-3x+2kx+1 has two zeros. Check these values in the original equation. i don't get how to do it please help me.

22. ## help on geography!!

Where is the LCL (lifting condensation level) on the leeward side of and why?

23. ## Organic Chemistry I

Which acid, maleic or fumaric acid appears to be more reactive to bromine addition? How does the cis/trans affect this?

24. ## physics

An 8.00 g bullet is fired into a 160 g block that is initially at rest at the edge of a table of 1.00 m height. The bullet remains in the block, and after the impact the block lands d = 2.1 m from the bottom of the table. Determine the initial speed of the

25. ## physics

A 0.25 kg ball is thrown straight up into the air with an initial speed of 20 m/s. Find the momentum of the ball at the following locations.

26. ## maths

if bisector of any angle of triangle bisects he opposite side then it is isoceles triangle

27. ## Derviatives

Differentiate. V(x) = (3 x^3 + 3)(x^4 - 3 x)

A beam of microwaves with = 0.7 mm is incident upon a 12 cm slit. At a distance of 2 m from the slit, what is the approximate width of the slit's image?

29. ## physics

what force will accelerate a 2000-kg. truck at a rate of 0.50

30. ## matematik

26 Ä±n karesi 2.26.25+25 karesi

31. ## math

Cool mind teaser! -1, -6, 3, 68, 255, 654, 1379 Whats the patttern?

32. ## Physics Help PLEASE!!!

A 10 kg ball moving due west at 2m/sec collided with a 4kg ball that is moving due east at 3m/sec. you determine that immediately after the collision the 10 kg ball is moving due west at .57 m/sec. a) this probably is a totally elastic collision b) this

33. ## Ab Initio Derivative

Can anyone plz post the procedure for finding the derivative of :- e^ax by ab inition method?

asked by Mos Def
34. ## FIT

Joe Nautilus has $120,000 and wants to retire. What return must his money earn so he may receive annual benefits of$20,000 for the next 14 years?

35. ## History

The Arian heresy asserted what concept?

36. ## chemestry

At 298.K and 1.00 atm, assume that 22 mL of NO gas reacts with 18 mL of oxygen gas and excess water to produce nitric acid according to the following equation: O (g) H O(l) 2 HNO (g) 2 3 2NO(g) + 2 + 2 ¾¾® 3 . If all of the nitric acid produced by this

37. ## history

What strategy did Lee adopt in 1864, and what was his goal?

38. ## math word problem

The Main Hall on the college campus has four main levels, from the basement up to the third floor. The technology staff in the basement occasionally needs to see the President, who is on the first floor, and the Dean who is on the third floor. The stairs

39. ## orgo

Which acid, maleic or fumaric acid appears to be more reactive to bromine addition? How does the cis/trans affect this?

40. ## ELA

what are "how to" essays called ???

41. ## trig

the shadow of a tower is 2y meters longer at 30 degree than when it was at 45 degree. find the height of the tower

42. ## geometry

make a conjecture 6,12,9,18,15

43. ## algebra

the graph of the axis of symmettry of the parabola y=2x^2-11x+3 is best describe by which of the following equations?

44. ## algebra

The cariable x satisfies the equation 3^x.4^(2x+1)=6^(x+2). By taking logarithms of both sides,show that x=log9/log8

45. ## Chemistry

Consider the following chemical equation. Na3PO4(aq) + Ca(OH)2(aq) → Ca3(PO4)2(s) + NaOH(aq) How many grams of calcium hydroxide must react to give 2.81 g of Ca3(PO4)2? please explain step by step

46. ## ALGEBRA

Company A charges $55 per day plus$0.35 per mile to rent a car. Company B charges $50 per day plus$0.40 per mile. Jack wants to rent a car for three days. How many miles should Jack be traveling so that Company A is less expensive than Company B?

47. ## algebra 2

Factor: 27X^2-90X+27

48. ## Algebra

Hot Java Coffee Company adverties their decaffeinated coffee as 97% caffeine free as compared to their regular caffeinated coffee. If a cup of coffee is 8 ounces, how many ounces of decaffeinated coffee would you have to drink to get the equivalent amount

49. ## physics

a body is thrown downward with an initial speed of 20.0 m/s on earth. what is the acceleration of the object

50. ## algebra

C=3000 / 300-3X

51. ## math

what is a communitative property

A 5.00 kg ball (ball 1), moving to the right at a velocity of +4.00 m/s on a frictionless table, collides head-on with a stationary 7.60 kg ball (ball 2). Find the final velocities of the balls if the collision is as specified below. (a) elastic collision

53. ## math

a man saved a sum of 200 dinars in the first month, 250 in the second month, 300 in the third month and he continue to save at the streght. after how many month can he buy a radio instronment coastin 13500 dinars

54. ## Chemistry

If 36.00 mL of KMnO4 solution are required to oxidize 25.00mL of 0.02932 M Na2C2O4 solution what is the concentration of KMnO4?

55. ## Statistics

What are the steps espoused by Applied Statistics in Business and Economics for formal hypothesis testing? Explain why the sequence is important. What might happen if the hypothesis test is performed before the researcher has decided on the significance

56. ## science

A player kicks a soccer ball from ground level and sends it flying at an angle of 30 degrees at a speed of 26 m/s. How long was the ball in the air?

57. ## Algebra

What is the domain of y = 2/(x) + 2 x>0 x=0 All real numbers except x = 0 I think the domain is All real numbers except x = 0 Is that correct?

58. ## American Government

If the U.S. were to have another constitutional convention, would we keep a federal system or change it? why or why not?

x/3 = x+10/6

60. ## algebra

How do you determine how to solve y=10x-8,y=1/2x+5

61. ## American Government

If the U.S. were to have another constitutional convention, would we keep a federal system or change it? why or why not?

62. ## Math

2x+3y+4, 1.2x+1.8x+2.6

63. ## Physics

A novice skier, starting from rest, slides down a frictionless 35.0 degrees incline whose vertical height is 140 m. 1. How fast is she going when she reaches the bottom?

64. ## Fluid Mechanics

A tank is 180cm long, 90cm deep and 90cm wide at the top, tapering to 30cm wide at the base. If the tank is completely filled with water, calculate: a) the total weight of the water in the tank b) The total force exerted by the water on the bottom c) The

65. ## pre calc

Determine between which consecutive integers one or more real zeros of f(x) = –x3 + 2x2 – x – 5 are located

66. ## Chem

In the |Molecular Geometry Lab 1. List three ways in which models used in this experiment are inaccurate representations of orbitals? 2.explain why the ClF3 molecule is not a trigonal planar molecule?

67. ## math

a dailly farmer produce 50 tons of rice in the first day, 57 tons in the second day, and 64 tons in the third day. the production continue to increase in the same manner up to the 28 day. what is the a) production of the farmer on the 28 day? b) what is

68. ## Physics

What is the force necessary to accelerate an object with a mass of 115 kg and and an acceleration of 6 m/s2 (squared) east?

69. ## Chemistry

What is structural formula of Ester?

70. ## chemistry

How many mL of 0.25 M H2SO4 can be made from 50.0mL of 0.50 M H2SO4? Also in this case, what does the capital M stand fro?

71. ## chemistry 1A

If 0.2178 g of a diprotic solid acid is neutralized by 44.81 mL of 0.0953 M NaOH, calculate the molar mass of the solid acid

72. ## psychology

Today, most psychologists take ____ approach to human development. a nativist an empiricist a dualist an interactionist

73. ## science

what is the most liquid found in the earths atmosphere

74. ## Physics

A woman runs a kilometer using a force of 210 N and a power output of 500 W. How long in minutes does it take this woman to complete 1 kilometer?

75. ## math

The length of each side of a triangle is an even number. If no two of the sides are equal, what is the smallest perimeter the triangle coul d have? ans-18

76. ## science

what man made object has the greatest acceleration ?

77. ## Derviates

Find f '(x) and f ''(x). f(x) = x^(9\/ 2) e^x

78. ## english

my class room is on the ground floor of main building

79. ## Dervatives

Differentiate the following function. u = 4 root3(t) + 9 sqrt(t^9)

80. ## math

solve the two sided inequality and show the solutin on real number 7

81. ## science

What color is a tadpole

82. ## science

Is 2Ag+S the same as Ag©üS?

83. ## chemical principal

a chemist weidghed 1.25g of sodum hydroxide ,placed it in a volumetric flask and then added enough deionized water to bring the total volume to 250mL. How many moles of NaOH were added to the volumetric flask

84. ## biology

what is a section of DNA that governs physical and behavioral traits called?

85. ## AP Physics B

What is the force of Friction as a 12 kg object slides down for 30 meters down a 30 degrees incline at a constant velocity?

86. ## Spanish

Sports and hobbies and pastimes What sports associate with these body parts? Mentioned many sports and activities as possible (as many... As possible) for each body part. 1. legs and feet 2. arms and hands 3. hands and fingers 4. eyes 5. head

87. ## math

find the dimensions of a rectangle with a perimeter of 780m if the length is 15 more than 4 times the width.

If a small stream of liquid A was strongly deflected by a charged object, liquid B was moderately deflected, and liquid C was weakly deflected rank the liquids in order of polarity. (Assume densities and charges are all equal.)

89. ## chemistry

A scuba diver's tank contains .25 kg of oxygen compressed into a volume of 4.3 L (for oxygen, 32g = 1 mole) Calculate the gas pressure inside the tank at 9 degrees Celsius What volume would this occupy at 26 degrees Celsius and .95 atmospheres?

90. ## American History

Which of the following statements most accurately characterizes immigrants' accommodation to city life in the United States around 1900?

91. ## Language Arts

Is there a website that can help me check my answers for Sadlier-Oxford Vocabulary Workshop?

92. ## Chemistry

A certain brand of iron suppluement contains FeSo4 7H20 with miscellaneous binders and fillers suppose 22.93 mL of KMnO4 solution used in the question above are needed to oxidize Fe2+ to Fe3+ in a 0.4927g pill. What is the mass percent of FeSo4 7H20(molar

93. ## math

FInd the equation of a line through the point (-2,5) with a slope of -2

94. ## math

Find the equation of a line through the points (-2,3)and (-4,5)

95. ## Math

What does it mean if a line in R^3 is parallel to the xy-plane but not to any of the axes. I really don't know what this means in terms of how the parametric and symmetric equations of the line should look. Please help.

96. ## chemisty help please

A scuba diver's tank contains .25 kg of oxygen compressed into a volume of 4.3 L (for oxygen, 32g = 1 mole) Calculate the gas pressure inside the tank at 9 degrees Celsius What volume would this occupy at 26 degrees Celsius and .95 atmospheres?

97. ## physics

To push a 25.0kg crate up a frictionless surface incline angled at 25 degrees to the horizontal, a worker exerts a force of magnitude 209N parallel to the incline. As the crate slides 1.50m, how much work is done on they crate by (a) the worker's applied

98. ## algebra

Factorise 4x^2-7x+3= and 6x^2+10x-5= Thanks Method would be good-as I am stuck.

261. ## 8th grade

why did zorna pour ketchup on her brother's hand

262. ## 7th grade

What is 7540 over 94710 in simplist form?? Please Help! I am terrible at math!

263. ## Math

How does this (a) equal to : 326^2 - 0 = 2(a)(0.83) a = 64,022 m/sec^2 My calculations do not seem to be coming out properly what so ever if we are solving for 2a I believe.

264. ## physics

Find the angular speed of the Earth as it spins about its axis. Give your result in rad/ses

i need help writing a thesis statement for an essay. the topic is this: use an example from romeo and juliet, write and essay analyzing Romeo's decision-making abilities at this point in the play. also, include a tough decision you have had to make and

266. ## Western Experience

Why did the tide of WW2 began to turn in favor of the allies in 1942?

267. ## Spelling

would "supply" follow the vcccv pattern?

268. ## Maths B

Hi, i was just wondering if you could help me with how to work out this question, as i have attempted and get a bit confused at the end. here it is: A cylinder is inside a sphere- the sphere has a radius of R. What is the maximum volume of the cylinder?

269. ## 8th grade math

How do you find the y-intercept in a graph, equation, and table?

270. ## 5th grade

which of the fractions are bigger 5/16 or 1/2 or 1/4 or 7/16

271. ## physics

65.0-kg person throws a .045kg snowball forward with a ground speed of 30.0 m/s. a second person with a mass of 60.0-kg catches the snowball. both people are on skates. the first person is intially moving forward wit ha speed of 2.50 m/s and the second

272. ## algebra HELP ASAP

If $13,000 is deposited in a bank account paying 6% compounded quarterly, what amount will be in the account after 8 years? How much interest will be earned during the 8 years? The amount after 8 years will be$___ How much interest will be earned during

273. ## Global History

How has the scientific method impact our understanding of the world and the way we study it?

274. ## calculus

Find all numbers b such that the average value of f(x)=2+6x−3x^2 on the interval [0,b] is equal to 3. Give your answer as a list of numbers, e.g., {1,2,3}.

275. ## world history

how do i do a report that is due in 2 day that is on the 5 themes of geography and has to do with a current event i need help and i am having a break down how can i work like this HHHHHEEEEEELLLLLLLPPPPPPP ME

276. ## 5 th grade

What is the median fo the following set of numbers? 404,650,585,435,680,342,798 please! show me the work. thank you!

277. ## operational management

Activity Time Predecessor(s) A 3 None B 4 A C 3 B D 5 B E 10 C, D F 3 E G 6 E H 5 G, F Please assist with finding the ES, EF, LS, LF and slack time for ALL activities. also, the critical path? and, the project completion time?

278. ## physics

The instruments attached to a weather balloon in the figure below have a mass(m) of 5.0 kg. The balloon is released and exerts an upward force(F) of 92 N on the instruments.

279. ## pre cal

find the exact value of tan(2sin-1 3/5)

280. ## english-to writeacher

thanks for helping me, just saying

281. ## statistics

if the mean of a normally distributed set of data is 100 and the standard deviation is 10, a z score of 2 corresponds to raw value of?

282. ## science

what can an element's osition in the periodic tabletell you about it's relationship to other elements in the periodic table?

98x^2-32y^2

284. ## Integration

1. [integration] (3x+7sin(x))^2 dx i tried 3 different methods of integration but all of my answers are wrong. 2. [Integration]from 0 to 5 (3w-3)/(w+6)dw i divided the numerator by the denominator and then tried to solve the question but im getting the

285. ## Global Issues

So no one's helping me with my paper, I already posted twice. But I figured out everything myself and fixed it to the best of my capability. Can I atleast get some help with the conclusion?? Should the Richer Countries of the World help Poorer Countries

286. ## 5th grade

estimate the answer 189,103+504,200=693,303 estimate would= 600,000 0R 70,000? which number shows 90 millions, 7 hundred thousands, 5 thousands, one hundred and 4 ones? A.90,750,104 or B.90,705,104 ?

287. ## 5th grade

how does a double line graph looks

288. ## Physics

If a chain of 30 identical short springs linked end-to-end has a stiffness of 420 N/m, what is the stiffness of one short spring? Okay, I don't understand how you would get N/m if they are linked together. Can you explain how you would get the answer?

289. ## Debate: Policy

I'm trying to find articles and information about the U.S. Armed Forces. I've been trying to find some info for hrs. could you send me some links to websites that could help me? THANKS.

290. ## math

Would 147/10,000 be .0147 written as a decimal?

291. ## Physical Science

Water,Shampoo,and Milk's pH are tested neutral. Why is this a good thing?

292. ## CHEMISTRY

Given that the specific heat capacities of ice and steam are 2.06 J/g°C and 2.03 J/g°C, the molar heats of fusion and vaporization for water are 6.02 kJ/mol and 40.6 kJ/mol, respectively, and the specific heat capacity of water is 4.18 J/g°C, calculate

293. ## chemistry

why does 2 mole NaOH react with 1 mole HCl in titration?

294. ## 10th grade

calculate the mass of the water of hydration if a hydrate loses 0.025 mol of H2O when heated

295. ## Business Math

A company purchased an air conditioning system for $10,200. Shipping charges on the system are$875. Setup costs were $1,250. The system is expected to last for 5yrs and has a residual value at$2000. If I use the straight-line method to calculate