# Questions Asked onFebruary 4, 2010

1. ## Social studies

The origin or history of social studies in britain

2. ## College Physics

How do I solve this problem: A particular wire has a current of 10A. A) How many electrons pass a fixed point every 5 seconds? B)If a wire has a radius of 2 x 10^(-3) m and the electron drift speed is 2.63 x 10^(-5) m/s, determine the number density of

3. ## physics

Four identical charges (+2.0ìC each) are brought in from infinity and fixed to a straight line. The charges are located 0.40 meters apart. Determine the electric potential energy of this group.

4. ## Physics

Four 50-\mu {\rm{C}} charges are brought from far apart onto a line where they're spaced at 2.0-{\rm cm} intervals. How much work does it take to assemble this charge distribution?

5. ## phys 2

Two capacitors are identical, except that one is filled with a dielectric ( = 4.50). The empty capacitor is connected to a 12.0 Volt battery. What must be the potential difference across the plates of the capacitor filled with a dielectric so that it

6. ## Algebra I

After a baseball is hit, the height h (in feet) of the ball above the ground t seconds after it is hit can be approximated by the equation h=-16t^2+70t+4. Determine how long it will take for the ball to hit the ground. Round your answer to two decimal

7. ## physics

If there is just one force acting on an object, does its work necessarily result in an increase in kinetic energy? Explain. (Select all that apply.) 1.Yes, when a force does work on an object it always results in an increase in kinetic energy. 2.The work

8. ## math

what is a termites favorite breakfast?

9. ## College Physics

A current exists in a wire that gradually narrows down to a smaller diameter. How do the drift velocity, the current density, and the electric field vary along the wire? Can you please help explain this?

10. ## math

what did the witty raindrop exclaim to all the others

11. ## chemistry

By means of what single reagent could you distinguish between the following? (Tell what happens to each substance.) Solutions: AgNO3 and Zn(NO3)2 H2SO4 and HNO3 Ag(NH3)2Cl and AgNO3 Solids: AgCl and ZnCl2 AgCl and Hg2Cl2 PbCrO4 and K2CrO4

12. ## Physics-College

You have a 50V battery in a circuit with a single resistor R. If the resistor dissipates 200 J of energy in 5 seconds, what is its resistance?

Two parallelograms have pairs of sides that are 3 feet long and 2 feet long. One of the parallelograms is a rectangel and the otehr is not. Which has a bigger area, and why?

14. ## Chem

Explain why chemists might want to prepare substituted hydrocarbons. Give two examples of possible substitutions.

15. ## Chemistry II

How long would it take for 1.50mols of water at 100.0deg C to be converted completely into steam if heat were added at a constant rate of 16.0j/s

16. ## trig

A population of wolves in a county is represetned by the equation p(t)=80(0.98)^t. where t is the number of yers since 1998. predict the number of wolves in the population in the year 2008.

17. ## English

I'm looking for an artivcle by a credible news site (eg: bbc, cnn, TIME, etc). It must be about education. I'm searching for articles mostly about rote learning, and whether or not school will better prepare you for jobs, or about the school curriculum.

23. ## chemistry

n-pentane and 1-butanol have nearly the same molecular weights but significantly different change in temperature values. explain the difference in change in temperature values of these substances based on their intermolecular forces.

24. ## chemistry

When Dr. Farrell was a graduate student, he prepared a buffer of pH = 8.0 from Sodium Acetate. Why would the casual observer to this buffering faux pas think he had the intellectual agility of a small soap dish?

25. ## Physics 103

How do I solve this problem: You buy a 75W lightbulb in Europe where electricity is delivered to homes at 240V. If you use the lightbulb back in the USA at 120 V, what will it's power output be?

26. ## chemistry

when 25.0 of lithium iodide completely dissolves in water how much heat is evolved

1) An ideal gas occupies a volume of 0.60 m^3 at 5atm and 400K. What volume does it occupy at 4.0atm and a temp of 200K? I know how to find the volume with the m^3 and the atm but it threw me off since it gives the 4.0 atm and the temp 200K.

28. ## Social studies

How did social studies began in britain. i.e the history of social studies in britain

29. ## physics 2

The inner and outer surface of a cell membrane carry a negative and a positive charge, respectively. Because of these charges, a potential difference of about 0.070 V exists across the membrane. The thickness of the cell membrane is 8.0 × 10−9m. What is

30. ## english 10

Explain how The Federalist Papers would have been more or less successful if newspapers had been printed monthly (rather than daily or weekly).

31. ## accounting 220

Final Project: Final Project • Resources: Appendix A • Due Date: Day 7 [post in the Individual forum] • Write a 700-1,050 word paper, using APA guidelines, based on following scenario. You want to start your own business. You found an investment

32. ## programming

java, write a program that prints out the letter X composed of asterisks (*) reply soon

33. ## English

Which of the following italicized words is correctly capitalized? I think it is D. is that correct? Thanks or your help.. A. Mount mckinley is the tallest mountain in North America. B. The most beautiful State is Hawaii. C. Marsha speaks excellent german.

34. ## Math-definition

What is the prime factorization of a number?

46. ## English

1. He has learned Chinese this year. 2. He has learned Chinese for three months this year. (Is the meaning of "has learned' the same in #1 and #2? If it is November, does #1 mean that he is learning Chinese in Novemver? How about in #2?)

47. ## geo

List the set of all even numbers between 2 and 10, inclusive.

why do states need to be concerned about laws passed in other states

49. ## INDO european languages

The Indo-european parent language was first spoken by a pre-historic people in: A} Western europe B} Middle east C} Northern india D} Southeastern europe .The answer i choose is C. Am i correct?

1) If a 10. m3 volume of air (acting as an ideal gas) is at a pressure of 760 mm and a temperature of 27 degrees Celsius is taken to a high altitude where the pressure is 400. mm Hg and a temperature of -23 degrees Celsius, what volume will it occupy?

51. ## PHYSICS 131

the velocity of a train is 80.0km/h, due west. 1hr an 30min later, its velocity is 65.0km/h, due west. Whats the train average velocity

52. ## Math

A school has four art teachers, three music teachers, and eight history teachers. In how many ways can a student be assigned an art teacher, music teacher, and a history teacher?

53. ## chemistry

5.0 moles of a gas is put into a container of 2.0L. More gas is added to the flask s othat there is now 15 moles of the gas present. What must the new volume be if temperature and pressure are to remain constant?

54. ## physics

If there is just one force acting on an object, does its work necessarily result in an increase in kinetic energy? Explain. (Select all that apply.) 1.Yes, when a force does work on an object it always results in an increase in kinetic energy. 2.The work

55. ## math-11

okay this is the frst day of grd 11 math and i am doing review and i don't remember anything what do they mean when they say " determine the velue of the three primary trigonometric ratios for

56. ## algebra

using 9 odd numbers the total should be 90

57. ## Math

Rhonda has 18 weeks to save $489 for her ticket to Alaska. If she saves$20 per week, which statement is true? A.) Rhonda will have more then enough for her trip B.) Rhonda will have exactly enough money for her trip. C.) Rhonda will not have enough money

58. ## Math

Use systems of lineear equations to solve: An airplane flew for 6 hours with a 22-km/h tail wind. The return flight against the same wind took 8 hours. Find the speed of the plane in still air. I know the answer is 154 km/hr (back of book resources :)

59. ## pysch

what do we know about coping with feeling of helplessness and depression?

60. ## english

The following paragraph contains five errors in grammar, punctuation, mechanics, or usage. Copy and paste the paragraph into the textbox, and then revise to correct the errors. 1. When your Dictionary shows more than one spelling for a word, I bet you were

61. ## math 10

determine the value of the three primary trigonometric ratios i have triangle in front of me but what am i looking for? what is trigonometric ratios?

asked by just wondering part 2
62. ## science

which would have a more difficult time maintaining body weight at a cooler tempertature a mouse on a diet including ptu and a mouse on a regular diet

63. ## engish 1

in "Salvation" by langston I am suppose to tell whether the point of is from a view of someone "going on thirteen" or from the point of view of a mature man? Give evidence to support your opinion. i think it is a mature man, langston hughes himself because

64. ## descriptive paragraph

Am i on the right direction? Descriptive paragraph Deborah Paul A loyal Friend My loyal friend Mary Ellen is 48 years old with shoulder length black hair and dark brown eyes. Mary Ellen is very short standing at 5'0 in height and a stocking build. She has

65. ## maths

the length of a rectangle is 2 centimetres less than twice the width. the area of the rectangle is 180 square centimetres. find the length and width of the rectangle.

66. ## Social Civics

Today unions (A)Have generally experienced a tremendous increase in membership (B)Have not succeeded in organizing any white-collar workers (C)Are divided into two large organizations, the A.F.L. and the C.I.O. (D)Have generally experienced a decline in

what is the lines of latitude and longitude

68. ## Math

Two small planes start from the same point and fly in the same direction. The first plane is flying 35 mph slower than the second plane. In 2 hrs, the planes are 530 mi apart. Find the rate of the slow plane.

69. ## Math

What words have a horizontal line of symmetry when printed horizontally, and a vertical line of symmetry when printed vertically. The only word I have is HI.

70. ## art

i am researching a piece of art work by frida kahlo and i need more infomation about he work, any sujestions?

113. ## science

How do i read a solubility curve to answer a question like: at what temp will 50g of potassium nitrate complete saturate 100cm3 of water

114. ## arithmetic

what is the explicit formula of the sequence 3,1,-1,-3,-5

115. ## English

Thank you very much for your last corrections! Can you please check these other ten paragraphs for me? 1)One day a man in a sport car approached a bend at top speed. He lost control of the vehicle, which jumped over a fence and fell into the river below.

116. ## Calculus

Let f(x) = 3(x^6)lnx. f'(x)= ...

117. ## com140

what qualities make written communication effective?

118. ## science

Wiil ships float lower or higher in tropical waters? Thanks

119. ## Calculus

How do I find the f'(x) of f(x)=((8x+3)/(9x-) 5)^(1/2)?

120. ## Biology

17. When errors in nucleotide sequencing occur, a. DNA polymerase replaces the incorrect nucleotide with the correct nucleotide b. enzymes dissolve the incorrect nucleotide so DNA polymerase can add the correct one c. purines replace pyrimidines in the DNA

121. ## Math

What words have a line of symmetry when it is printed vertically, but that is not symmetric when printed horizontally. I only have the word WHO.

122. ## us history

Given the global political, economic, and cultural dominance of the U.S. after World War II to the present, characterize the position of the U.S. in terms of both positive and negative impacts on the world's developing nations.

123. ## Anatomy

which would have a more difficult time maintaining body weight at a cooler tempertature a mouse on a diet including ptu and a mouse on a regular diet

144. ## math

-18 > x/6-10 let "x" be the unknown number solve the inequality.

145. ## science

a. if i use 100N of force and move 3 meters, how much work is this? b. if it takes 90 seconds to get there, how much power did i exert?

146. ## electrical and electronic engineering

investigate the impact of photovoltaic system on low voltage distribution network in Malaysia.

147. ## math

i have 78% in the course the exam is worth 30% and i got 65% what is my overall mark in the course

148. ## science

what happens to the population of butterflies after a predator comes through? answer must include the words, gene and natural selection

149. ## science

compare digestion and respiration. how would unhealthy teeth or germs affect digestion. how are the digestive and circulatry system alike. explain how the heart and lung help each other provide oxtgen to the body.

150. ## College accounting

What are the major functions or activities performed by accountants in a private industry?

151. ## Writing

How can confidence and determination help succeed in school?

152. ## Introduction to Biology and the Scientific Method

What are the Ten characteristics that distinguish an object or thing from an actual living organism where all 10 characteristics must be present simultaneously for something to be considered living?

153. ## Math

Ms. Parks needs 1,512 award pins. If pins come in boxes of 48, about how many boxes will she need to buy? F.) 30 G.) 50 H.) 150 J.) 300

154. ## Calculus

Let f(x) = ln(((2x–5) / (7x+4))^(1/2)). f'(x) = ... I keep on getting the wrong answer.

155. ## Finance

(Default risk) You buy a very risky bond that promises a 9.5% coupon and return of the $1,000 principal in 10 years. You pay only$500 for the bond. a. You receive the coupon payments for three years and the bond defaults. After liquidating the firm, the

156. ## discrete mathematics with applications

Determine which of the following pairs of statements forms are logically equivalent. Justify your answer using truth tables and include a few words of explanation. Read "t" to be a tautology and "c" to be a contradiction: 26. (p^q)v(p^r)and(pvq)^r 28.

157. ## Math

I need four words that have one vertical line of symmetry when printed vertically or horizontally. The two that I have right now are MOM and WOW. They have to be in capital letters as well. Your help will be appreciated, thanks

158. ## math

how would you work out one seventh of 6.3

-1x2-4x+12=0

162. ## programming

can anybody help me out with this code: write a program that converts 10, 50, and 100 kilograms to pounds.

163. ## MATH

WHAT IS 0.044919 TO THE NEAREST TENTH?

Have the regulatory agencies been outlawed by the federal courts?

165. ## government

decribe 2 ways the federal buracracy helps shape laws passed by congress?

166. ## Accounting

A company has a $150,000 invoice that is due in 60 days with a 2% discount if paid in 10. The company can invest the 2% or$3000 and earn 6% per year. What should the company do?

167. ## essential mathematics 1

simplify & show work 3/4 + 5/8 _________ = 3/4 - 1/2 Need help with this one

168. ## discrete mathematics with applications

A logical equivalance is derived from Theorem,supply a reason for each step; (pv~q)^(~pvq) ß(~q v p)^(~q v ~p) by_________ ß ~q v(p ^ ~p) by_________ ß ~q v c by_________ ß ~q by_________ Therefore,(p v~q)^ (~p v ~q)ß ~q.

169. ## HCA/220

You are an ENT and have just responded to a 9-1-1 call. Begin a discussion with another ENT about what has occurred at the scene and which body parts have been affected?

170. ## Environmental Science

My assignment requires choosing a terrestrial resource issue and creating a powerpoint presentation about it. I understand what I need to do but I'm not positive about what exactly a terrestrial resource is...for example, does habitat

171. ## Slavery

•How has the American history of African slavery influenced our contemporary society? Provide three examples you believe to be most significant.

172. ## Science-Pendulum

I have to do a conclusion for this as well. It says Do Lock Step, what does that mean?

173. ## prejudices

in the last 2 years what are some of the changes the u s had made to policies concerning the treatment of arabs and muslims

174. ## chemistry

at STP, chlorine is a gas but bromine is a liquid. why is this?

175. ## math

x over x+2 and x=3

176. ## Literature

Can some one please explain these stanzas to me? I have read them over and over and am still so confused. Take up the White Man's burden-- Send forth the best ye breed-- Go bind your sons to exile To serve your captives' need; To wait in heavy harness, On

177. ## SOCIAL STUDIES

Who is affected by the Florida Cession? What is the orgin (country)of the Annexation of Texas? Pleas Help!

178. ## mgmt 470

Create a table and analyze environmental factors

179. ## algerbra

-3x-3y=-15 what are the cordenece?

180. ## government

do republicans think the government is too strong or too weak?

181. ## SOCIAL STUDIES!!

Who is affected by the Florida Cession? What is the orgin (country)of the Annexation of Texas? Pleas Help!

182. ## economics

A(n) ________-based ethics code defines corporate values; creates a supportive environment, and, stresses shared accountability among employees.

183. ## math

how do I solve and state if it is an overestimate or an underestimate? 1.2% of 490 Do I .012 x 490 or Do I round 1.2% to 1

184. ## algebra

Find an equation of the porabola described. - Vertex(0,0);directrix x + 1 = 0

186. ## history

What methods did the Muslim leaders use to try to prevent European imperialism?

187. ## Pyshical Science

50g of a substance has a volume if 100cm3. What is the density of the substance?

188. ## Finance

XYZ Corp. made a coupon payment on their 6.25% bonds yesterday that mature in 11.5 years. What is the market price of these bonds if the required return is 9.2% APR?

193. ## nursing

can someone give me some ideas about a consumer health issue to write a report about. This is my first paper (APA) format in a while - I don't want it to be too difficult or technical Thanks

194. ## Math

Solve the inequality: 2x-1 / 3x-2 < 1 [the < is actually less than or equal to] I got one of the answers, x is less than or equal to 1, but there's another. How do you find that answer? Thanks

195. ## math mearsurement

What is the mass of a glass of water including the glass?

196. ## math

need help reearing formula T= 2pie sqrt(m/k solve for m is this right k= T^2/m 4pie^2

197. ## math mearsurement

My name's Daisy I'm wondering What is the glass of water including the glass?

198. ## math

How do I solve this? Describe the locus of points z satisfying: |z+2|+|z-2|=5 z is a complex number.

199. ## Biology

17. When errors in nucleotide sequencing occur, a. DNA polymerase replaces the incorrect nucleotide with the correct nucleotide b. enzymes dissolve the incorrect nucleotide so DNA polymerase can add the correct one c. purines replace pyrimidines in the DNA

200. ## College physics

a child with a mass of 40 kg slides down a vertical pole with an acceleration of 6 m/s squared. what is the magnitude and direction of the frictional force that acts on the child?

201. ## Math

need help rearanging this formula T= 2pie sqrt(m/k solve for k is this right k= T^2/m 4pie^2

203. ## Biology

c. The cytoskeleton of eukaryotes serves many functions. One of these functions is served in eukaryotes by a different major structure. Which structural feature is it? How do these different structures serve the same function in the two cell types? Is it

204. ## essential mathematics 1

simplify of complex fractions 5/8 5= 5/8 divide by 5= 5/8 divide 5/1= 5x5=25 8x1=8 is this right or no need help

What is the timeline of chapters 13 through 18 of The Scarlet Letter? Please i need this by Tomorrow.

206. ## environmental science

Hydronium ions are composed of OH- H+ H2O Which one

207. ## Social Studies

Who were major people that took part in colonization of Africa between 1800-1914?

208. ## Social Studies

Who were major people that took part in building the Suez Canal? Was it Ferdinand de Lesseps???

what does transfusion

210. ## Calculus

Let f(x)=(x+7)/(x+5). inverse f-1(-3)=...