# Questions Asked onSeptember 12, 2010

1. ## physics

At a picnic, there is a contest in which hoses are used to shoot water at a beach ball from three directions. As a result, three forces act on the ball, F1, F2, and F3 (see drawing). The magitudes of 1 and 2 are F1 = 55.0 newtons and F2 = 95.0 newtons.

2. ## chemistry

Radio waves travel at the speed of light which is 3.00 x 108 m/s. How many minutes does it take for a radio message to reach Earth from Saturn if Saturn is 7.9 x 108 km from Earth?

3. ## Algebra

A size 36 shoe in France is size 3.5 in England. A function that converts shoe sizes in France to those in England is g(x)= 3x-94/4. A size 6 shoe in the United States is size 3.5 in England. A function that converts shoe sizes in England to those in the

4. ## astronomy

what does the phenomenon of interference demonstrate? a)the wave nature of light b)the polarization of light waves c)the quantization of the atomic orbitals d) the particle nature of the photon e) the process of ionization -how about for diffraction?

5. ## chemistry

Sulfer trioxide, SO3, is made industrially in enormous quantities by combining oxygen and sulfer dioxide, SO2. What amount (moles) of SO3 is represented by 1.00 kg of sulfur trioxide? How many molecules? How many sulfer atoms? How many oxygen atoms?

6. ## Physics II

Margaret walks to the store using the path: 0.500 miles West, 0.200 miles North, 0.300 miles East. What is the total displacement (direction and length of the vector that points from her house directly to the store)?

7. ## Chemistry

I am really having trouble answering this question, can someone help? A binary compound between an unknown element E and hydrogen contains 91.27% E and 8.73% H by mass. If the formula of the compound is E3H8, calculate the atomic mass of E.

8. ## trig

Bob is driving along a straight and level road straight toward a mountain. at some point on his trip he measures the angle of elevation to the top of the mountain and finds it to be 23 degrees 42 minutes. he then drives 1 mile more and measures the angle

9. ## physics

how long does it take a softball to cross homeplate at 43 feet if the ball is going 65 miles per hour?

10. ## Chemistry

I have a lab for chemistry that I have to turn in soon, and I have no idea what the major and minor species if any of each of the substances we tested. Can someone please help me answer which one is the major/minor species of each of the elements? They

11. ## English

I need help writing a good thesis statement about relationships.

12. ## Algebra

Why is it necessary for the encoding function to be one-to-one?

13. ## parenting

making the decision to have a child is momentous. it is to decide forever to have your heart go walking outside your body. pls i was asked to write a one page reflection, but i don't know what to write or how to start. pls help me

14. ## math

A number leaves reminder 6 when divided by 10. What is the remainder when the number is divided by 5? Justify your reasoning.

15. ## Physics

Jason drives due west with a speed of 35.0 mi/hr for 30 mins, then continues in the same direction with a speed of 60.0 mi/hr for 2.00 hr then drives farther west at 25.0 mi/hr for 10.0 mins. What is his average velocity?

33. ## Science

Can an element be separated to form a compound? Can an element form a compund? I think it's a yes to both of the above questions. An element can form a compound by combing with another element.

34. ## Intermediate algebra

Evaluate the exponential equation for three positive values of x, three negative values of x, and at x=0. Transform the second expression into the equivalent logarithmic equation; and evaluate the logarithmic equation for three values of x that are greater

35. ## algebra

What is the value of the x variable in the solution to the following system of equations? 2x − y = 6 4x − 2y = 12

36. ## Med insurance billing

A patient presented for evaluation after a fainting spell. The following tests were ordered by the physician: carbon dioxide, chloride, potassium, and sodium. The health-care claim that was submitted contained procedure codes for each test. You have not

37. ## Physics

Two rocks are thrown off the edge of a cliff that is 15.0 m above the ground. The first rock is thrown upward, at a velocity of +12.0 m/s. The second is thrown downward, at a velocity of −12.0 m/s. Ignore air resistance. Determine (a) how long it takes

38. ## Math

Perform the indicated process on the polynomials: 4x^3 - 7x - 6 / 2x - 3

39. ## math

86, 64, 24...What is the next term?

40. ## math

Name the multiplicative inverse,or reciocal,of each number. 19/3 19x3 3x19

41. ## Math - True or False

True or False: 1. f(x) = -x^3 + x + 1 is an odd function 2. f(x) = x^3 -ax^2 + bx represents a cubic equation having no constant term ...(I'm thinking true?) 3. If f(x) = x/x+2 then f^-1 (x) = 2x/1-x ...(my guess is false?) 4. The equation x^3 - 12x + 16 =

42. ## Calculus..Need Help Soon

If f(x)=1-x^3 and f^-1 is the inverse of f, how many solutions does the equation f(x)=f^-1(x) have? a)none b)one c)three d)five e)six

43. ## space science

In blackbody radiation, the energy is radiated uniformly in every region of the spectrum, so the radiating body appears black in color. true or false?

44. ## Chemistry

I have a lab for chemistry that I have to turn in soon, and I have no idea what the major and minor species if any of each of the substances we tested. Can someone please help me answer which one is the major/minor species of each of the elements? They

45. ## math

what is my number? Clue 1 My number is a multiple of 5,but it does not end in 5. Clue 2 The prime factorization of my number is a string of three numbers. Clue 3 Two of the numbers in the prime factorizations are the same. Clue 4 My number is greater than

46. ## management

what is historical management and how is it related to todays management studies? Give me a comparison of bureaucratic and administrative management?

47. ## science

how does the shape of a plant cell differ from that of an animal cell?

48. ## Chemistry 11

Carbon monoxide gas reacts with oxygen gas to form carbon dioxide gas acooridng to the following equation: 2CO(g)+O2(g)--> 2 CO2(g) IF 1 mole of CO2(g) is produves, how many kilojoules of heat energy are absorbed or released ?

49. ## ap java

an old-fashioned computer has just 16 bits available to represent an address of a memory location. how many total memory locations can be addressed in this machine? what formula would i use to find this answer?

50. ## Algebra II

If the distance from the point (5,k) to the line 8x - 15y + 8 + 0 is 20, find k. Recall that the formula to compute the distance between a point (x1,y1) and a line ax + by + c = 0 is d= abs(ax1+by1+c) [over or divided by] square root(a^2+b^2)

51. ## spanish

When one is referencing mood, I know estar is generally used because states of mood are temporary. In the following sentence, though, it seems like ser might be more appropriate, at least for the first part, because "siempre" indicates the mood is

52. ## physics

A car travels in a straight line with an average velocity of 85 km/h for 2.5 h and then with an average velocity of 30 km/h for 1.5 h. (a) What is the total displacement for the 4 h trip? _____________________ km (b) What is the average velocity for the

53. ## Ethics

What evidence do you see of an ethical breakdown in Canadian society affecting all sectors (e.g., business, education, and government)?

54. ## Math

Express the following in a + bi form: i / (2 + i) Answer a. 2 + i b. (-1/5) - (2/5)i c. 2 - i d. (1/5) + (2/5)i

55. ## Physics

In an experiment to explore the nature of the relationships between velocity, force, and acceleration, what important issues are being ignored?

56. ## 6th grade social studies

need to find a place that has no culture so I can write an essay about it

57. ## science

What would a counter-example be in math? a.an example that proves the conjecture wrong b.an example to show the formula is wrong c.a very nice granite kitchen-top surface d.an example to show the conjecture is true

58. ## science

What is the definition of Mathematics? a.adding and subtracting numbers b.the science of patterns and relationships c.the science of numbers d.a really hard subject

60. ## Math

log(5x+1)=2+log(2x-3)

61. ## Math

e^2x+2e^x-15=0

log(logx)=2

63. ## Math

4b^5c^3d^3 / 2b^7cd^2 (divided by) please show me step by step ! Thanks! ^__^

64. ## algebra

I am having trouble with the following : find the slope and the y intercept of the line 7x=6y+12. I have the slope as 3 and the y intercept (0,3)

65. ## Physics

A boat that can travel at 4.0 km/hr in still water crosses a river with a current of 1.8 km/h. at what angle must the boat be pointed upstream to travel straight across the river? Confused on how to even set it up!

66. ## science

true or false: The frequency of a water wave gives us its height.

67. ## social studies

why did the Catholic Church and French monarchy oppose HIM/IT?

68. ## science

When a beta particle strikes a living cell, __________? A. the beta bounces off B. the cell is not affected C. the cell may cease to function D. it causes the cell to split E. a chain reaction occurs c

69. ## science

To run efficiently and productively, a fusion reaction must operate at temperatures greater than __ degrees C. A) 100 B) 2,000 C) 1,000,000 D) 100,000,000 E) 350,000,000 d

Write and simplify an expression for the perimeter of the triangle. side A-4x+3, side B-6X and side C-3x-1. Thank you!

71. ## Physics

Vector A is directed along the positive y-axis and has magnitude sqrt 3.0 units. Vector B is directed along the negative x-axis and has a magnitude 1.0 units. (a) what are the magnitude and direction of A-B? (b) what are the x and y components of B-A?

72. ## physics

A small steel ball bearing with a mass of 28.0 g is on a short compressed spring. When aimed vertically and suddenly released, the spring sends the bearing to a height of 1.25 m. Calculate the horizontal distance the ball would travel if the same spring

73. ## science

Quit groveling, Lou! Of course I'll help you. Which of these words is a synonym of groveling? a. ignoring b. begging c. digging d. running

74. ## physics

A small steel ball bearing with a mass of 28.0 g is on a short compressed spring. When aimed vertically and suddenly released, the spring sends the bearing to a height of 1.25 m. Calculate the horizontal distance the ball would travel if the same spring

75. ## government

Which of the following is the largest private employer? a. U.S. federal government b. Wal-Mart c. General Motors d. Microsoft

Suppose you surveyed 50 students and 34 said that they approve of how the president is doing. Construct 90%, 95%, and 99% confidence intervals for the true proportion of students in your school who approve of how the president is doing. Be sure to

77. ## Math

ok 3 questions A. Is a polygon a plane figure (Always,sometimes,never) answer one of three B.find value of x X(squared) +x amd X(squared) + 4 C. Find x. X(squared) + 2x + 40 and x(squared) - x +190 If someone could show me how to do those that would be

140. ## space

What is the value of g for space-shuttle territory , about 200km above the Earth's surface. Data: Earth's mass is 6x10^24kg, and radius is 6380 km

141. ## math

how many differnt ways can 50 players in a marching band be arranged in rectanagle arrangement?

142. ## english

Is this right after i fixed the sentence? Also did i use phrase "more than expected" in the sentence correctly? If I were Ashlee, I will not think that I would be able to provide assistance, more than expected, to the patient’s personal life besides

143. ## Server 2008

DHCP is based heavily on which protocol

144. ## algebra

4[(2(-5x+y)-y]-10(y-4x)

145. ## english

I don't understand this question : what were the circumstances of hamlet sr.'s death? are they asking what triggered his death? or what was the situation that triggered hamlet's death?

146. ## English

I forgot to include the followig sentences. I really hope you can have a look at them too. 1)How did Marlow consider Kurtz and why? Marlow considers Kurtz a hallow man because inside of him there was nothing to fight the influence of the wild jungle. 2)

147. ## chemisty

balance ___ch3ch2cooh + __o2 yields __co2 + ___h2o

148. ## algebra 1

3/4 + 1/8 = then simplifly i really don't get this and i need explanation of how you did that to do the rest of my home work like how did you get this and why? please and thankyou. very much

149. ## astronomy

Which statement gives the relationship between the waves in the electric and magnetic fields in an electromagnetic wave? a)they are in phase and parrallel to each other in space b)they are 90 degrees out of phase but parrallel in space c)they are in phase

150. ## calculus

Find a value for k so that 2x^2 + kx + 1 has no real roots.

151. ## Math

99,88,198,197,?,296,396

152. ## 12th grade - Math

P(x) = 3x^3 - 7x^2 - 4x + 2 P(1 + √ 3) =

153. ## English

1. Did you see the pictures in my homepage? 2. Did you see the pictures on my homepage? 3. Did you see the pictures over my homepage? 4. Did you see the pictures through my homepage? (Which prepositions can we use? Are they all grammatical?)

154. ## science

Which shows the expression below simplified? (3.6 × 10^15) + (1.8 × 10^12) a. 3.60018 × 10^15 b. 3.902 × 10^14 c. 3.618 × 10^15 d. 3.6018 × 10^15

155. ## English

Thank you very much for your corrections. I stilll need to check these few more sentences. 1) we'll ne analyzing twelve authors belonging to the English literature from 1800 to the beginninig of the twenty-first century. 2) I'll give you literature

156. ## Math - Find all roots

Find all roots: #1.) 2x^3 + 5x^2 - 22x + 15 = 0 #2.) x^4 + 4x^3 + 6x^2 + 8x + 8 = 0

157. ## science

To run efficiently and productively, a fusion reaction must operate at temperatures greater than __ degrees C. A) 100 B) 2,000 C) 1,000,000 D) 100,000,000 E) 350,000,000 d

158. ## English

He played a special music to/for me. He sang a song to/for me. He brought a rice cake to/for me. (Do we have to use 'to' or 'for' here? Are both prepositions correct?)

159. ## geography

how does obesity influence death rate?

160. ## social studies

how does this fable "the goose that laid the golden egg" relate to louisiana's resources

161. ## geography

how does the level of education influence death rate?

163. ## social studies

true of false. everyone has the same basic needs for food, clothing, and shelter.

164. ## history

why are canadians so proud of their country, land, and freedom?

165. ## space science

All Lyman emission lines are transitions from the excited state to _____ state.

167. ## science

When a beta particle strikes a living cell, __________? A. the beta bounces off B. the cell is not affected C. the cell may cease to function D. it causes the cell to split E. a chain reaction occurs c

168. ## social studies

true or false. because resources are plentiful, people must make choices.

169. ## Calculus..Need Help Soon

If x=1 and x=2 are zeros of f(x)=3X^3+Ax^2+Bx+2, then the value of A+B is a)1, b)-1, c)9, d)-9, e) cannot be determined I think it can't be determined but i don't know!

170. ## ..

which variable is the dependent variable?

171. ## mathematics

1/3 + 1/6 = simplify it later i need explanation of how you get this for example 3/4 + 1/8 = 3/4=6/8 6/8 + 1/8= 7/8 how did they get 6/8 im confused thanks for helping and please.

172. ## History

Yes or no. To have a favorable balance of trade, a country must sell fewer goods to other countries than it buys from other countries. Yes or no.Money is an example of an capital resource. Yes or no.In our economic system, people receive wages for

196. ## science

5.imagine you are at the beach on a very hot day. you walk toward the water. the sand is eextremly hot. when you reach the water, you find that the water is much cooler than sand. a) using the term heat capacity, explain why the sand is hot and water is

197. ## english

Tom is my stepfather, helped me purchase my car. Nick and I are working hard to save money to buy a home. Do these sentences use pronouns correctly

198. ## Pre Calc

Given the sum of all the edges of the rectangular solid at the right is 76cm, the area of all of its faces is 228 cm^2, and its volume is 216 cm^3.

199. ## Spanish

For the verb componer in the present tu form is Compone. But in the preterito it's compuso. Is the ending -puso because the verb as poner in it which is irregular? Also, would this be the case for all verbs that have endings that are irregular?

200. ## Algebra

I am having trouble with the following : find the slope and the y intercept of the line 7x=6y+12. I have the slope as 3 and the y intercept (0,3), if not can you show me how to get to the right answer

201. ## keyboarding and word processing

Ann says that to move text to the next line when you've reached the end, you have to tap the Enter key. Jill says that the text will automatically move to the next line and it's not necessary to tap the Enter key. Who is correct?

202. ## college physics

The plastic in a DVD disk will begin to deform at rotations faster than 10,000 revolutions per minute. How many radians per second is that? If the disk has a radius of 0.06 m, what is the centripetal acceleration at the edge?

203. ## Chemistry

Can 10.ml of glacial acetic acid mixed with 0.50 g of benzoic acid crystals (dissolved) freeze? And if so, what is the freezing point?

204. ## Math

What is range of this rational function: 20/1+x^2

205. ## english

does anyone know the summary for the book "when rain clouds gather"? chapter 3??? it is very confusing chapter

206. ## english

Is this a grammatically correct sentence? "She is from Mexico, being born in Mexico City." I think it sounds weird

207. ## Physics

There's 2. 1) A 1200-kg airplane starts from rest and, with a constant average forward acceleration of magnitude 5.0m/s^2, reaches its take off speed in 9.00 s. The runway is 300 m long. What is the planes takeoff speed? 2) A boy is attempting to swim

208. ## Sociology

I have to write an assignment on a situation similarly to a culture at walmart from the text Sociology 101 A brief introductiob 8th edition page 68, is there any way I can get this article?

209. ## Pre Calc

Given the sum of all the edges of the rectangular solid at the right is 76cm, the area of all of its faces is 228 cm^2, and its volume is 216 cm^3. Find its height, width and length. [hint- Let the height, width and length be the roots of a cubic

210. ## chemistry

what are effect of the nitrate or chloride ion in the solutions on the color emission?

a=46c

212. ## math

How would you use the concepts from Chapter 8 in a real-life situation?

276. ## Probability

Roll four dice one time. What is the probability that the sum will be odd?Can anyone explain/show in detail how to find the answer to this problem?

277. ## math

Find the smallest value of x that satisfies the equation. absolute value of (x+5) = 3

278. ## English

How Mosquitos Came To Be Long time ago there was a giant who loved to kill humans, eat their flesh, and drink their blood. He was especially fond of human hearts. "Unless we can get rid of the giant," people said, "none of us will be left," and they called

279. ## Probability

Roll four dice one time. What is the probability that the sum will be odd?Can anyone explain/show in detail how to find the answer to this problem?

280. ## precalculus 2

log(x-4)-log(3x-10)=log(1/x)

281. ## Math 117

2. Biologists want to set up a station to test alligators in the lake for West Nile Virus. Suppose that the costs for such a station are $2,500 for setup costs and$3.00 to administer each test. a. Write an expression that gives the total cost to test x

282. ## US History

7. Slavery in Africa differed from slavery as it developed in the Americas in that a. women and children were not enslaved. b. only complete families were enslaved c. enslavement lasted only seven years d. slaves could move up in society and out of slavery

What does this quote mean? "He climbed up and saw forhimself what his father saw--miles and miles of trees and houses, and a future lost in the layers of yellowish haze"

284. ## chemistry

What is the mass, in grams, of 3.57×10^−2 ?

285. ## Spanish: translation

I'm not sure how I should translate the english sentences/questions into spanish: 1) What did they bring? - Que lo trajeron? 2) What did she say? - Que se(or te) dijo? 3) Did you read the newspaper? - Tu leiste el periodico? I'm not sure if they're right.

286. ## Physics

An athlete starts at point A and runs at a constant speed of 5.40 around a round track 150m in diameter. Find the x component of this runner's average acceleration between points A and B. I don't even know how to start. Please help!

5.imagine you are at the beach on a very hot day. you walk toward the water. the sand is eextremly hot. when you reach the water, you find that the water is much cooler than sand. b)predict what the air temprature would be relative to the sand and water

288. ## ALGEBRA/POLYNOMIALS

4b^5c^3d^3 / 2b^7cd^2 (divided by) Thanks! ^__^

289. ## math

Simplify: (1 + i)(1 - i) Answer a. -2i b. 2 c. 2i d.-2

290. ## Honors Algebra 2

i have no clue how to solve this!! the problem is... 20x^3 - 125x = 0 (twenty x to the third power minus onehundredandtwentyfive x equals zero) it asks to find all the solutions for the equation. please help!!

291. ## Physics

A runner runs 2.9 km in 9 min and then takes 30 min to walk back to the starting point. (a) What is the runner's average velocity for the first 9 min? _______ km/h (b) What is the average velocity for the time spent walking? _______ km/h (c) What is the

292. ## Physics

A Hollywood daredevil plans to jump the canyon shown in the figure on a motorcycle. There is a 15. m drop and the horizontal distance originally planned was 60. m but it turns out the canyon is really 65.7 m across. If he desires a 3.1-second flight time,

293. ## physics

Bertrand Russell wrote, "I think we must retain the belief that scientific knowledge is one of the glories of man. I will not maintain that knowledge can never do harm. I think such general propositions can almost always be refuted by well-chosen examples.

294. ## Physics

If you can throw a ball vertically upward to a height h = 30.1 m, what is the maximum horizontal range over which you can throw the same ball, assuming you throw it at the same initial speed

295. ## physics

Complete the following. (a) 1.57 105 km/h2 = km/h·s (b) 1.57 105 km/h2 = m/s2 (c) 37 mi/h = ft/s (d) 37 mi/h = m/s I don't understand how to convert these i have tried to convert them and i got them all wrong please help! Thanks

296. ## college algebra

What is 1.7^0.3326 = ?

297. ## 9gr

Is it not at all feasible to you that this guy is a genuinely good person? Which of these words is an antonym of feasible? a. understandable b. unclear c. likely d. impossible

298. ## Language Arts

Compare the Poem "If I can stop one heart from breaking" by Emily Dickenson to "Thank you M'am" by Langston Hughes. What connections do you see between the short story and the poem?

299. ## math

x^6 + 5x^3 – 24) ÷ (x^3 – 3)

300. ## science

Evaluate the following expression when r = 2 and t = 5. (2r)t - 2 a. 1022 b. 16 c. 64 d. 62

301. ## Chemistry

I'm completely confused on how to solve this problem. Convert 125 hp-hr/long ton to kW-s/kg.

302. ## Chemistry

How can one tell if a reaction is of the first order, the second order or the third?

303. ## English 2

9. Which of the following statements is an example of direct characterization? a. Carlos always speaks loudly. b. Spot is a happy dog. c. Eva says, "I'm so clumsy." d. Kevin wears his letter jacket everywhere he goes. B? Thanks -MC