# Questions Asked onNovember 16, 2010

1. ## chemistry

can someone please help me with this question: mass of ferrous ammonium sulfate = 4g mass of k3(fe(c204)3)*3h2o = 4.25 g 1) using the above mass of ferrous ammonium sulfate calculate the theoretical yield of k3(fe(c204)3)*3h2o? 2) the percent yeild of it?

2. ## algebra

how do I find the vertex of y = x^2 - 18? I got -9, -81 but that seems impossible I think I'm missing something

3. ## statistics

The average time to sew a pair of pants is 4.2 hours with a standard deviation of 30 minutes and if the distribution is normal then the probability of a worker finishing the pants in less than 3 hours is.

4. ## Biology

4.0 g of ferrous ammmonium sulphate, FeSO4(NH4)2SO4 6H2O, is used. Since the oxalate is in excess, calculate the theoretical yield of the iron complex. Please help with this question. Thank you.

5. ## Physics

Starting from rest, a 98-kg firefighter slides down a fire pole. The average frictional force everted on him by the pole has a magnitude of 720 N, and his speed at the bottom of the pole is 3.8 m/s. How far did he slide down the pole?

6. ## Physics

A 58 kg bungee jumper jumps from a bridge. She is tied to a bungee cord whose unstretched length is 15 m, and falls a total of 36 m. Calculate the spring stiffness constant k of the bungee cord, assuming Hooke's law applies. Calculate the maximum

6x-(2x-3)=31

8. ## physics

A stone tied to the end of a string, 80 cm long, is whirled in a horizontal circle with a constant speed. If the stone makes 14 revolutions in 25 seconds what is the magnitude and direction of the acceleration of the stone?

solve.(polynomials) 3(x-5)=45

10. ## finance

What is the relationship between an interest rate and a discount rate in time value of money calculations?

Did i correct all the mistakes in this article? Why are many students choosing to pursue their college degrees using their home computers? Benjamin Franklin said “A penny saved is a penny earned.” This principle applies to the American and foreign

12. ## Math

solve 3x+ 4 = x - 5

13. ## Multivariable Calculus - Green's Theorem

Compute the line integral of F = along the path from A to B. The path from A to B is not closed, it starts at A which has coordinates (-1,0) goes to (1,0) then goes up to (1,1) then left to (-2,1) then down to (-2,-1) and finally stops at B at (-1,-1).

A 8.6 kg board is wedged into a corner and held by a spring at a 50.0° angle, as the drawing shows. The spring has a spring constant of 186 N/m and is parallel to the floor. Find the amount by which the spring is stretched from its unstrained length.

15. ## physics help me

A spring is hung from the ceiling. A 0.300 kg block is then attached to the free end of the spring. When released from rest, the block drops 0.170 m before momentarily coming to rest. (a) What is the spring constant of the spring? (b) Find the angular

16. ## help me physics

The femur is a bone in the leg whose minium cross-sectional area is about 3.60 E-4 m2. A compressional force in excess of 6.90 E4 N will fracture this bone. (a) Find the maximum stress that this bone can withstand. 1 N/m2 (b) What is the strain that exists

17. ## physics

A novice skier, starting from rest, slides down a frictionless 33.0° incline whose vertical height is 127 m. How fast is she going when she reaches the bottom?

18. ## physics

A cowboy at a ranch fills a water trough that is 1.1 m long, 62 cm wide, and 48 cm deep. He uses a hose having a diameter of 2.4 cm, and the water emerges from the hose at 2.4 m/s. How long does it take the cowboy to fill the trough? Answer in units of s.

19. ## chemistry

if you mixed 7 grams of iodine pentafloride with 2 grams of water which substance would be the limiting reactant?

20. ## social studies

write a pamplet against the government of charles 1 that you imagine walter prynne might have written

using ratio 1:2 find the perimeter of rectangle that has a width of 6 inches and a length of 8 inches? need answer asap

22. ## chemistry

how many equivalents of sulfuric acid are in 20mL of 0.35 N H2SO4 solution? How many grams?

23. ## Physics

A cyclist intends to cycle up a 7.5 degree hill whose vertical height is 170 m. Assuming the mass of bicycle plus cyclist is 95 kg, calculate how much work must be done against gravity. If each complete revolution of the pedals moves the bike 5.6 m along

24. ## Physics

A 21.0 kg child descends a slide 3.4 m high and reaches the bottom with a speed of 2.0 m/s. How much thermal energy due to friction was generated in this process?

25. ## Calculus

The limit from x--> infinity of x^(3/x) i keep getting 3/infinity, which is infinity and this answer is incorrect.

26. ## Calculus

First make a substitution and then use integration by parts to evaluate. The integral of (x^9)(cos(x^5))dx What do you substitute first? I do not understand what they are asking for. Please help. thanks!

27. ## Calculus

Evaluate. The integral of (e^5x)(sin6x)dx

28. ## math

Use the formulas for lowering powers to rewrite the expression in terms of the first power of cosine. sin^6(x) Answer=__________ ~Thank you.

29. ## Maths

I'm after understanding more than an answer but an answer would be greatly appreciated. The question reads as "On the answer sheet for this question is shown an x-y graph of the function [y(x)=x^2cos(3x)] Add to that same picture a rough sketch of the

30. ## chemistry

Use the thermochemical equations: 1/2 H2(g)+1/2 I2(g) ...............> HI(g) delta H = -1.1 k cal 1/2 H2(g).......> H2 (g) delta H = -104.2 k cal 1/2 I2 (g)..............> I (g) delta H = +18.1 k cal To present for the formation of hydrogen iodide gas from

31. ## computer science

. Investigate the values of  and  such that the system of equations x + y + z = 6 x + 2y + 3z = 10 x + 2y + z = , may have (i) Unique solution

32. ## Physics

Solve the equation. 2 sinx = 0.8. 0< x < 360 degrees

What is the difference between a manager and a leader;

34. ## physics

the small body of mass m slides on a frictionless loop the height above the bottom path of the circular loop is three times the radius of the circular loop.DETERMINE THE VELOCITY OF THE MASS BEFORE IT REACHES TH BOTTOM PATH OF THE LOOP

What are the main or different types of a leader or leadership; Discuss their main functions and state whether anyone can become a leader.

36. ## Commercial Law

What are the main requirements for a valid contract;

37. ## English

i need an urgen help with my eulogy can someone please help me, please. i cant do some parts properly,and am not sure of some parts. so really need help. This is a hard moment. It’s the moment we must say farewell to the to the brave young man, Callum

38. ## Commercial Law

What is the difference between an offer and an invitation to treat and why is the difference important;

39. ## Economics

Using a diagram, analyse the production possibilities frontier.

40. ## Economics

Using examples explain how the Production Possibilities Frontier illustrates the main economic concepts. You should include a detailed explanation of these economic concepts.

41. ## physics

a proton starting from rest falls through a potential difference of 10^6v what is its final KE and final velocity?

42. ## math

How would I setup the equation for the perimeter and area of a similar (6inch width, and 8 inch length)rectangle that is increased by a ratio of 1:n?

43. ## English

(Question) Chickens include chicks, hens, and roosters. Then, what includs, cows, bulls, and calves?

44. ## material science

how can we achive nano size in tio2 powders

45. ## English

"A friend in need is a friend indeed!" is the life lesson that my father taught me. I learned from him that we should try hard to help others. He always wanted me to be a good friend who can help friends in need. (Is this passage grammatical? Would you

46. ## chemistry

what happens when iron is reacted with iodine

47. ## English

1. Ask a question at a time. (What are other expressions which are similar to 'at a time'?) 2. John is in his room at the moment. (What other expressions are similar to 'at the moment'?)

48. ## physics

A rocket is launched at an angle of 56.0° above the horizontal with an initial speed of 101 m/s. The rocket moves for 3.00 s along its initial line of motion with an acceleration of 29.0 m/s2. At this time, its engines fail and the rocket proceeds to move

49. ## physics

A rocket is launched at an angle of 56.0° above the horizontal with an initial speed of 101 m/s. The rocket moves for 3.00 s along its initial line of motion with an acceleration of 29.0 m/s2. At this time, its engines fail and the rocket proceeds to move

50. ## Statistics

Assume a population of any 4 numbers(suppose: 4,8,15,19). Select a random sample of size 2 with replacement from the population. List all the possible samples and their corresponding values of x̄ “x-bar” and then find the probability distribution of

51. ## english grammar

"stop the accident" The Children are doing something wrong in each of these places. predict and describe what should they done instead? Jane and fred are running round the corner. and crash to each other. what should they do?

52. ## Math

Using Netwon Law of Cool, the graph of T(t)=S+(T subscript --S)e^kt approaches a horizontal asymptote.What does the asymtote describe? a) intial temperature of the heated object b) temperature of the surrounding environment c) the difference in the

53. ## cmo155

Students are often confused about the use of the words good and well in their writing. Write a 100-word passage to Susan Anker, the author of the course’s textbook, in which you describe five details from her book that are good and five details about the

54. ## english

Erica P. com/155interest rates • In a total of 200 words, write two paragraphs with about how interest rates affect our purchasing decisions. • Identify the topic sentence in each by underlining it. I need to know if I underlined all of the topic

55. ## Chemistry

If the relative humidity of the air is 45% and its temperature is 23 degrees C, how many molecules of water are present in a room measureing 14m by 9m by 8.6m

56. ## ENGLISH

WHAT IS CENSORSHIP AND RESEARCH PAPER

57. ## physical

give brief explanation of the origin of both football and soccer

58. ## physics help

The femur is a bone in the leg whose minimum cross-sectional area is about 3.60 10-4 m2. A compressional force in excess of 6.90 104 N will fracture this bone. (a) Find the maximum stress that this bone can withstand. (b) What is the strain that exists

59. ## confidentiality of health information

comp;are and contrast contributory negligence with comparative negligence

Write y = 10^(x) as a logarithmic function Choices are log(x)10 = y log(y)x = 10 log(10)y = x log(x)y = 10 I think it is log (10)y = x

61. ## vb programing

I need help to create a project for vb auto center from Programming in Visual Basic 2008 Chapter 11 pg 468. Write a project to store vehicle information including model, manufacturer, year, and VIN number. Create a second project that load the data from

102. ## life science

Select the item the does not belong. a)Amino acid b)Carbon c)Heredity d)Nucleic acid e)Controls the cells activities

103. ## Psychology

In the 3 domains of development, why is it important to consider each domain in the study of adult development?

104. ## math

6(3+6x)-4=230

The company offers two types of sales: 1. Internet sales; 2. Store sales. The marketing research manager believes that the Internet sales are more than 10% higher than store sales. The null hypothesis would be: A. Pinternet–Pstore >.10 B.

7 - 7 - 7 - 7 = ? 12 - 15 - 10 - 8 = ? 3 - 7 - 4 - 2 = ? 11 - 9 - 6 - 6 = ? 6 - 5 - 4 - 2 = ? 8 - 5 - 5 - 5 = ? 12 - 7 - 5 - 4 = ? 13 - 3 - 6 - 1 = ? 16 - 10 - 2 - 3 = ? 8 - 2 - 2 - 2 = ? I am not understanding how to help figure these problems out? I

107. ## organic chem

convert butane to 3-pentanol using any reagents and organometalics.

108. ## physic

A gymnast of mass 68.0 {\rm kg} hangs from a vertical rope attached to the ceiling. You can ignore the weight of the rope and assume that the rope does not stretch. Use the value 9.81 {\rm m/s^2} for the acceleration of gravity.

109. ## heatlh care

You're The New Director Of A Hospital Health Information Management Department. The Chief Financial Officer Has Hired You For Your Expertise In Health Care Reimbursement And Needs To Know How Your Department can help with reimbursement.list the most

CONFLICT OF INTEREST Big Company is a large manufacturer of health-care products that is under fire from the government to lower costs. Big Company has an excellent reputation and is widely acknowledged as one of the best managed companies in the country.

111. ## Journalism

How did the Indian education movement affect young Native Americans?

112. ## English

what news of julilet does Romeos servant Balthasar bring?

113. ## math

Let π denote the proportion of grocery store customers that use the store's club card. For a large sample z test of H0: π = .5 versus Ha: π > .5, find the P-value associated with each of the given below values of the test statistic.

8x-(2x+7)=23

115. ## algebra 1

8x-(2x+7)=23I am completely drawing a blank as to how I am suppose to solve this. Can someone offer the first step?

116. ## Qestion bout WH

how can i get a better gradfe wen i cant remember all the stuff only bits and pieces

117. ## statistics

14) You wish to compare the average GPA of students from one department to another. It is assumed that the distributions of GPA in both departments are normally distributed and that the overall standard deviation of GPA is the same in both departments. If

118. ## 9th grade algebra math hw, help?(:

The table below shows the cost of renting a bike for a given amount of time, find the rate of change in cost with respect to time. Table: Time: 1.75, 4, 7. Cost( Dollars)4.375, 10, 17.5 Could one of the tutors please explain to me how to this? Thanks :)

119. ## Computer Science-Javascript

Can you check my code and tell me why the prompts are not showing up on the webpage: Homework 8 I like the color purple.

120. ## Chemistry

A student did the Synthesis of Salicylic Acid experiment starting with 3.89 g of methyl salicylate (C8H8O3) and using 40 mL of 6.0 M NaOH. To evaluate her success she needs to determine the limiting reagent. The reaction goes as follows: C8H8O3 + H2O ==>

121. ## math

Herman is making a small triangular table. If two of the sides will measure about 25 inches each, how many inches should the longest side (c) measure? Use the appropriate formula and round your answer to the nearest tenth. I don't know how to do this cuz

122. ## Chemistry

student did the Synthesis of Salicylic Acid experiment using 3.93 g of methyl salicylate. This was the limiting reagent for his experiment. What is the theoretical yield of salicylic acid for his experiment? The theoretical yield is:

123. ## Abraham Lincoln's adult hood

I need information on Abraham Lincoln's adult hood. Can anyone give me a site that is not the wiki please? Thanks

124. ## 5th math

If in a data set, all numbers appear just once, what is the mode?

125. ## english

Odipus Rex/Odipus the king Identify an important question about the text that the film had to address. Evaluate the question. Setting,costume, eliminating a speech or character, music..

126. ## Statistics

Suppose x is a uniform random variable with c=10 and d=90. Find the probability that a randomly selected observation exceeds26.

127. ## English Literature

"But it was for I would have lived to have loved God better and longer time, that I might by the grace of that living have the more knowing and loving of God in the bless of heaven." Can you tell me what this quote from Julian of Norwich, "The book of

128. ## Science

Is sugar a covalent or ionic compound?

The trem hierarchy refers to

If you consider The Call of the Wild to be an allegory, which one of the following statements would be true?

131. ## statistics

The amount of time spent by North American adults watching television per day is normally distributed with a mean of 6 hours and a standard deviation of 1.5 hours. What is the probability that in a random sample of five North American adult at least two of

132. ## math 12

Find the number of seating arrangements of eight basketball players on a bench if either the one centre or both of the two forwards must sit at the end where the coach always sits.

133. ## algebra 2

can you answer this question? a store is offering a discount of 30% on a suit. There is a sales tax of 6%. A) using a composition of function, represent this situatio in which the discount is taken before the sales tax is applied. B) using a composition of

134. ## math 12

The six members of the yearbook staff sit around the circular table in their office. How many different seating arrangements are there of this group of people?

135. ## recreational math, music

How would you go about listing all of the integer ratios, preferably in a spreadsheet? I would like to have them listed in ascending order by the product of the numerator and the denominator, because in music, more "complex" ratios produce more dissonance.

136. ## Accelerated Physics

An 18.0 kg box is released on a 35.0° incline and accelerates down the incline at 0.269 m/s2. Find the friction force impeding its motion. How large is the coefficient of friction?

A 40-kg skater is standing still in front of a wall. By pushing against the wall she propels herself backward with a velocity of -1.8 m/s. Her hands are in contact with the wall for 0.80 s. Ignore friction and wind resistance. Find the magnitude and

138. ## math

-3/4 + 11/15 X 3/22 not sure if I use order of operations on this kind of problem???

A campsite charges 8$per day, for the site rental and 4$ for parking. The total campsite charge C( in dollars) is given by C=8d+4 where d is the number of days that the site is rented. complete the table and graph the equation. *Table: D= 0 1 23 C(d)=

140. ## math

find the missing number and landmarks for the set of numbers below

141. ## Science

With a magnetic field of 3.0 mT at the center of a 0.60 diameter loop, what is the current in the loop?

142. ## geometry

What does it mean by a line being unique?

143. ## English

1. What is your name? (Is 'what' a subject or a subjective complement?)

144. ## chem

The rock in a lead ore deposit contains 84% PbS by mass. How many kilograms of the rock must be processed to obtain 1.1 kg of Pb? i need to know what the conversion factors look like and how u did it

145. ## Physics

A uniform beam of length 1.0 m and mass 16 kg is attached to a wall by a cable that makes an angle of 30 degrees with the end of the beam, as shown in the figure. The beam is free to pivot at the point where it attaches to the wall. What is the tension in

146. ## Physics

A sturdy wooden board, 4.0 meters long and with a mass of 32 kg, rests on two supports (labeled L and R) placed 1.2 m from each end as shown in the figure below. (a) Suppose that a man with a mass of 60 kg stands at the center of the board (point a). What

147. ## math

48 divided by 3796

sin(pi/3)

149. ## Chemistry

A 0.23 M solution of a weak acid has a pH of 2.89. What is the Ka(acid ionization constant)for this acid?

150. ## math

a basketball player made 24 out of 75 free throws. what percent is this?

151. ## geometry

Twice the measure of the supplement of an angle is 39 degrees less than five times the complement of the angle. What is the measure of the angle? (Hint: Let 180 – x represent the supplement and 90 – x represent the complement.)

152. ## Ethics

What is speciesism? I have already defined it on google but could simply the definition?

153. ## math

Name some different ways in which these numbers can be classified. 11,4.5,50,8,16,3/5,100,20,9,8.6,141/2

154. ## math (linear programing problem)

Please help this question is from my unit on linear programing and I'm having trouble completing it. A company manufactures bicycles and tricycles. The total number of frames the company manufactures cannot exceed 80 per month. It takes the company 1 hour

155. ## Calculus

Knowing the time a ball hits the ground after throwing it up in the air and its intial postion, how would you calculate its initial velocity?

156. ## Math

A rectangular swimming pool is 7 meters longer then it is wide. It is surrounded by a concrete walkway 1.5 meters wide. The area of the walkway is 120 meters squared. What are the dimensions of the pool?

157. ## chemistry

Deserts are very hot during the day and cold at night. Why is there such a large nocturnal temperature drop

158. ## Chemistry

What causes the displays of lights called auroras?

159. ## Chemistry

Deserts are very hot during the day and cold at night. Why is there such a large nocturnal temperature drop?

160. ## Chemistry

On a day when the air temperature is 75°F, the relative humidity is measured to be 86%. How many degrees would the air temperature have to be lowered for the relative humidity to be 100%?

(18 - (-4))divide (-11) (-4) + 2

162. ## math

waht is the percent and decimal of 9 out of 50

spatial thinking which number comes 10 after 76 on the 100 chart? a- 77 b- 85 c-86 d- 87

164. ## English

1.Camels stamped and bellowed in annoyance when packs were put on them. 2.Aloe plants, which originated in Africa, are now widely available in the US. 3.As far as scientists can tell, there is no connection between these two events. 4.If you adjust the

31 X 19 in expanded algorithm

166. ## math 12

Ryan reaches into his gym bag for a pair of running shoes. If there are seven different pairs of shoes loose in the bag, how many ways can he pick two shoes that do not match?

167. ## algebra 2

Find the rule for the quadratic. The h =24ft. The pumpkin retuerns to the ground after 6 seconds. Hint: wat is the height when it hits the ground? Use h +vt-16t^2

168. ## math 12

A man bought two vanilla ice cream cones, three chocolate cones, four strawberry cones and one pistachio cone for his ten children. In how many ways can he distribute the flavors among the children?

169. ## french

Can you please check these thanks. Part 1: Complétez 1-2. On peut acheter des tickets de métro au --------- ou au -----------. Answer 1: guichet Answer 2: un distributeur automatique 3. Il faut -------- son ticket dans le tourniquet. Answer: valider 4.

170. ## math 12

A soap company will give away a million dollars to everyone who guesses the order into which they have arranged the letters of the word SUPERCLEANER. Each entry must be in a separate envelope. How much would it cost you in postage to submit all possible

171. ## true/false US history

Please help, thanks :) Racial segregation in public accommodations was upheld by the Supreme Court as long as the separate accommodations were of "equal welfare". I know it's false but I'm not sure what the term is. A deep, long term economic downturn is

172. ## Computer Science

What mechanism would you implement in the process scheduler to automate the termination of a job that Is in a infinite loop?

173. ## crt/205

Letter to the editor: “I would like to express my feelings on the recent conflict between county supervisor Blanche Wilder and Murdock County Sheriff Al Peters over the county budget“I have listened to sheriffs’ radio broadcasts. Many times there

174. ## Math

nick has 1 3/4 gallon of milk how many pints does nick have. I think it is 14.

175. ## Physics

A 2.60-kg block is attached to a horizontal spring that has a spring constant of 160. N/m. At the instant when the displacement of the spring from its unstrained length is -0.115 m, what is the acceleration a of the object?

176. ## Calculus

Find the x-coordinates of all points on the graph of y=x^3 - 4x^2 + 5x at which the tangent line is horizontal.

177. ## math

I have the first few words:did you hear about the water polo player who... whats the rest?

178. ## English

1. He is my boss. (What is the meaning of 'boss'? My senior in a department or the president of a company?)

179. ## Calculus

Find the x-coordinates of all points on the graph of y = x^3 - 4x^2 + 5x at which the tangent line is parallel to 2y - 10x - 7 = 0

180. ## college

What is the molarity of a 1.4% HCOOH solution

181. ## Chemistry

Identify the principle conjugate acid/base pair and calculate the ratio between them in a solution that is buffered to pH 9.00 and contains a. H2S b. ethylenediamine dihydrochloride c. H3AsO4 d. H2CO3

182. ## English

Can you please check if my sentences are possible? Thank you 1)When she was born,the doctors noticed that she had a problem with her feet. 2)She was operated on her feet (?)/(She underwent an operation) and the doctors amputated her feet and part of her

183. ## math

Write the equation of the perpendicular bisector of the line segment AB with endpoints A(1,1) and B(7,5). Write your answer in slope intercept form.

184. ## algebra

what is (9,7) with a slope of 3 be in point-slope form?

185. ## English

I forgot to include a few other sentences on the comparatives of adverbs. 1) He lives the farthest from the school. He has the least money among us. He is the friendliest among my classmates. He has made the fewest mistakes. 2) He wears the most expensive

186. ## help

I'm trying to find old newspaper articles from the 1940's about the mergence of day care and nurseries but I cannot find any. Help please!v

187. ## math

rachel is ranked 72 out of 451 students. whats her class rank percentile?

188. ## math

a quadrilateral with angles that mesure: 10x-25, 10x, 3x to the second power, and 2x to the second power. solve for x.

189. ## Government

a report on two different ways that you, as a young citizen, can become active in politics that would help promote causes that you believe in.

190. ## math

a quadrilateral with angles that mesure: 10x-25, 10x, 3x to the second power, and 2x to the second power. solve for x.

191. ## history

what was the duties of the pharaohs in the old kingdom

192. ## Memorial university,chemistry

What is the total number of sigma and pi bonds in the molecule {CH}_3{NCO}?

193. ## english

i have to write an essay and this is the topic i chose: "Explain why you like or dislike something that has an effect on your life." i chose dislike: having no confident can i write about that or does it has to be a thing, an object? please help and thank

194. ## Math

Name 3 different ways in which these numbers can be classified. 11 4.5 50 8 16 3/5 100 20 9 8.6 14 1/2

how much energy you use when you workout?

196. ## math

Ryan reaches into his gym bag for a pair of running shoes. If there are seven different pairs of shoes loose in the bag, how many ways can he pick two shoes that do not match?

197. ## math

The longest steel arch bridge is the new river gorge near fayetteville,west virginia. write an inequality that describes the length in feet ,1, of every other steel arch bridge. the new river gorge bridge is 1700 feet long.

198. ## Biology

I need to make a food web based on the story "The Lorax" By Dr. Suess. It needs to include these characters: The Lorax The Once-Ler The Barbaloots The Humming Fish The Swamme Swans The Truffula Trees The Grickle Grass Can you help me?

199. ## Language

Directions: circle the word that describes the subject of the sentence. The dance competition will be stiff. is the answer compitition?

200. ## Chemistry

How many milliliters of pure acetic acid (density = 1.05 g/mL) would be required to prepare 1.00 L of the solution?

201. ## true/false US History

A "tenant strike" occurs when labor refuses to work, but also refuses to leave its workplace to keep the company from using replacement workers. I put false and replaced it with sit-down strike. Before he left office, Eisenhower warned against the

202. ## algebra

Ryan Left The science Museum and drove south Gabriella left three hours later driving 42 km/h faster in an effort to catch up to him . after two hours Gabriella finally caught up find ryans average speed

203. ## history

how did the indian reeducation movement affect young Native Americans?

204. ## statistics

It is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and specific

205. ## Language

Directions: Circle the word that describes the subject of a sentence. Our teams are great. Would it be teams?

206. ## Chemistry

Write skeleton equations for these reactions. a. hydrogen iodide(g) --> hydrogen(g) + iodine(g) b. aluminum(s)+iodine(s)--> aluminum iodide(s) c. iron(II) oxide(s) + oxygen(g) --> iron(III) oxide(s)

207. ## algebra

how do you graph a fraction?

217. ## english

is shy is another word for lack of self-confidence are they the same or different cause i think im getting mix up here please help and thank you

218. ## Physics

The drawing shows a block (m = 1.5 kg) and a spring (k = 300 N/m) on a frictionless incline. The spring is compressed by x0 = 0.34 m relative to its unstrained position at x = 0 m and then released. What is the speed of the block when the spring is still

219. ## chem 101

how can a calorimeter constant be determined experimentally?

220. ## physics

With what minimum speed must Fran leave the ground in order to lift her center of mass 1.90 m and cross the bar with a speed of 0.80 m/s?

234. ## Algebra

A coast guard helicopter receives a distress signal from a boat. the units (15,80) (55,38)represent miles. to the nearest minute, how long will it take the helicopter to reach the boat if the helicopter travels at an average speed of 75 miles per hour?

235. ## MATH HELP ME 1st

what property would 4*1=4 be

236. ## Chemistry

How many half lives will it take for a sample of a radioactive isotope containing 20000 radioactive nuclei to decay to 2000 radioactive nuclei

237. ## calculus

With waht speed must a baseball be thrown upward from the ground in order to reach the top of the Washington Monment? (The top of the monument is 55o ft)

238. ## calculus

With waht speed must a baseball be thrown upward from the ground in order to reach the top of the Washington Monment? (The top of the monument is 55o ft)

239. ## Algebra

solve the equation by completing the square 3x^2-12x+1=0

240. ## statistics

The population mean and standard deviation are given. Find the required probability and determine whether the given sample mean would be considered unusual. For a sample of n=36, find the probability of a sample mean being less than 12.2 if M=12 and O=0.95

241. ## algebra

what did the baby porcupine say when it backed into a cactus?

242. ## Accounting

A credit saleof $800.00 is made on April 25th, terms 2/10, n/30, on which return of$50.00 is granted on April 28th. What amount is received as payment in full on May 4th?

243. ## data management

1.) How many bridge hands contain each of the following patterns: a.) Eight Spades and five Diamonds? b.) An 8-card suit and a 5-card suit? (this problem has to do with combination)

244. ## Chemistry

Magnesium has three naturally occurring isotopes: 24 Mg (23.985 amu) with 78.99% abundance, 25 Mg (24.986 amu) with 10.00% abundance, and a third with 11.01% abundance. Look up the atomic mass of magnesium, and then calculate the mass of the third isotope.

245. ## World History

what were the reasons rome fell? four facts about each :]

246. ## social studies

i need to find some info on kyoto how have people adapted to this environment? has the physical landscape/environment influenced human life in this place? how have humans modified this environment from its natural state can you send me the links where you

247. ## Chemistry

Write skeleton equations for these reactions. a. hydrogen iodide(g) --> hydrogen(g) + iodine(g) b. aluminum(s)+iodine(s)--> aluminum iodide(s) c. iron(II) oxide(s) + oxygen(g) --> iron(III) oxide(s)

248. ## science

linda drove 450km from Indianapolis to Milwaukee at 1:00p.m. the next day. She got tired on the trip, so she stopped in Chicago to rest overnight. She arrived in Chicago at2:30p.m. and left for Milwaukee at 11 a.m. the next day what was her average speed

249. ## Chemistry

Write skeleton equations for these reactions. a. butane(l) + oxygen (g) --> carbon dioxide(g) + water(l). b. aluminum carbonate(s)--> aluminum oxide(s) + carbon dioxide(g) c. silver nitrate(aq) + sodium sulfide(aq) --> silver sulfide(s) + sodium

250. ## Accounting

How do I calculate the future value of the following? $5,000 compounded annually at 12% for 2 years$5,000 compounded semiannually at 12% for 2 years $5,000 compounded quarterly at 12% for 2 years$5,000 compounded monthly at 12% for 2 years

the longest distance in a field and track event is the 10km run. the record holder for the women's 10km run is Wang Junxia of china. Assuming that she ran a distance of 10.0 km with an average f 5.644 m/s, what was her time?

252. ## algebra

how to find scale factor of fractions also with fractions in them

253. ## math

A= 0.5 m x 20 cm

254. ## Science 8

why is sugar more soluble in water than in canola oil???? in english please ive asked this question and it didn't make sense

255. ## english

okay i have 2 out of 3 supporting ideas for my essay but i need 3 so i need 1 more here is mine "does being shy effects my education" please help and thank you

256. ## Math

How would you estimate using fractions to find the percentage of a number. For example: 28% of 48.

why is 7 times 8 not a number sentance

258. ## Physics

The angular speed of a propeller on a boat increases with constant acceleration from 11 rad/s to 26 rad/s in 2.4 seconds. Through what angle did the propeller turn during this time?

259. ## math 7th

need help in "using similar figures"

260. ## Physics

A 74-kg canoeist stands in the middle of her 18-kg canoe. The canoe is 3.0 m long, and the end that is closest to land is 2.5 m from the shore. The canoeist now walks toward the shore until she comes to the end of the canoe. calculate the distance from the

261. ## ethics

How much of a part does ethics play in the development of organizational culture? Is it a big, important part? Why or why not?

262. ## Circuts

A wye-connected load consists of three impedances of 12+j3 ohms each. The line voltage driving the load is 208V. What is the phase voltage? What is the phase current? What is the apparent power delivered to the load? What is the power factor? What is the

263. ## Physics

A 1.5 kg basketball is thrown to the floor. At the moment it first hits the floor, the basketball has a velocity of 6 m/s directed 45° below the horizontal. In contact with the ball for 0.1 seconds, the floor exerts upon the ball a force of 135 N directed

264. ## Physics

Imagine you've finished this academic year and gone home to enjoy your summer vacation. During one of your days of relaxation and non-academic bliss, however, you realize you need to run a few errands. After stopping at the gas station where you fill the

265. ## AP Calculus

Use differentials (or a linear approximation) to estimate (2.001)^5

266. ## College Algebra

Give the rational number that is the exact value for each of the following: 14) Log(9)((∛(3)/(ã(27))=

267. ## College Algebra

Write each of the following as a single logarithm: 8) ((5-log x)/4) + 4log y =

268. ## Physics

A ceiling fan is rotating at 0.70 rev/s. When turned off, it slows uniformly to a stop in 2.9 s. (a) How many revolutions does it make in this time? (b)Using the result from part (a), find the number of revolutions the fan must make for its speed to

269. ## College Algebra

Write each of the following as a single logarithm (log (x+3))/(3) = 1

270. ## College Algebra

Give the real solution set for each of the following: 42) log(6)(x^2+11) + log(6)x = 1 + log (6)(x^2+1)

271. ## science

how far will 350 j raise a block weighing 7 N

272. ## Trigonometry

How do you solve the equation -3x^2 + 3 = 0

273. ## Calculus

Use implicit differentiation to find an equation of the tangent line to the curve y^2 = x^3 (26 − x) at the point (1, 5).

274. ## math

A= 100 cm x 1 m A= 100 cm x 100 cm A=10000 cm2?

275. ## Physics

Two blocks of the same mass are raised up a height of 3m from the ground. One is raised straight up and placed on a pedestal and the other is pushed up an incline with friction to get there. In which case, if either is work more necessary? Which block

276. ## chem/some1 check my work plz.

air bags actived when a severe impact causes a steel ball to compress a spring and electrically ignite a detonator cap. this causes NaN3 to decompose explosively according to the following reaction: 2NaN3(s)=2Na(s)+3N2(g) what mas of NaN3 must be reacted

277. ## Calculus

Use implicit differentiation to find an equation of the tangent line to the curve y^2 = x^3 (26 − x) at the point (1, 5).

278. ## ethics

Consider the following scenario: You are aware of a problem that is costing your company productivity. This problem is caused by a fellow employee who refuses to use current technology. This employee has asked you to keep the situation to yourself, since

279. ## math

How do areas of two parallelgrams compare when the dimensions of one are three times the demensions of the other?

280. ## Math

What is 13y-2x-12-15y

281. ## Math

If the length of a square garden is five and seven eighths long, then what is the perimeter?

282. ## math 11

Please help this question is from my unit on linear programing and I'm having trouble completing it. A company manufactures bicycles and tricycles. The total number of frames the company manufactures cannot exceed 80 per month. It takes the company 1 hour

283. ## science

Chemical weathering takes place fastest in a ____________________ and ____________________ climate.

284. ## chemistry

What would happen if 50 grams of carbon fully reacted to oxygen?

285. ## chem/some1 check my work plz.

nitrogen gas contained in a cylinder with a volume of 5.0x10^2 mL @ a temp of 30C and pressure of 710 torr. The gas is then compresse to a volume of 25mL and the temp. is reaised to 820C. what is the new pressure of the nitrogen gas?? Pf=p1*v1*t1/Tf*Vf

286. ## Chemistry

I'm having a hard time with a question predicting the reaction (if any) of 1,2-dichloroethane and sodium iodide, sodium iodate, and sulfuric acid. Any suggestions? Thanks!

287. ## science

do you where i can find a answer sheet to chapter 9 weathering and erosion? because i really want to ace the next test and i don't know the right answers to it thnx

288. ## Chemistry

You bubble ammonia in sulfuric acid solution. What is the result? (hint: remember, you start from NH3 (g))

289. ## Social studies

The region covering the area from the appalachians to the rockies and from the gulf of mexico to the great lakes in the 1600's was called ?

290. ## Chemistry

You mix HCl with Na2CO3; the result is not exactly a precipitation, but it is related. Explain.

291. ## geometry

what is 8x+4y=16 in slop intercept form?

292. ## English

1.The castanets, which were quite old, had been Melanie's grandmother's. 2.You were always singing when you were little. 3.Three Indian elephants patiently towed the logs that had just been cut. 4.Stay with us as long as you want. 5.The Forbidden City,

293. ## chemistry

You want to measure the CaCo3 contents in chalk. To this end, you grind a piece of chalk, dissolve the slurry to make 10ml of solution and drive the carbonate out by adding 10 ml of 2M HCl. You titrate the remaining HCl back with 0.1M potassium hydroxide

294. ## science

What other applications can be used with MS Excel to exchange information and data?

Three different weights are suspended from three different springs. Each spring has an elasticity coefficient of 18.5. The equation for the vertical displacement is y= 1.5cosine(t times the square root of k/m), where t is time, k is the elasticity

296. ## Calculus

Evaluate the integral: the integral of [5e^(2t)]/[1+4e^(2t)]dt. I used u sub and let u=e^2t and got 5/2arctan(e^2t)+C. But this answer is incorrect. Please help. Thanks

297. ## Chemistry

A 0.23 M solution of a weak acid has a pH of 2.89. What is the Ka(acid ionization constant)for this acid?

298. ## math

A= 5 m x 200 cm A= 500 cm x 200 cm A= 100000 cm2?

299. ## geometry

what is 2x+6y=6 and 3/4x-1/2y=1/8 in slope intercept form?

300. ## us history

what did the europeans and the africans traded

how do you solve y=5x-8 and 5y=2x+6 using elmination? Thank you, Raina

302. ## biology

compare and contrast karyotype studies and pedigrees using a venn diagram

303. ## Honors PRE CALCULUS

Three different weights are suspended from three different springs. Each spring has an elasticity coefficient of 18.5. The equation for the vertical displacement is y= 1.5cosine(t times the square root of k/m), where t is time, k is the elasticity

304. ## Honors PRE CALCULUS

Three different weights are suspended from three different springs. Each spring has an elasticity coefficient of 18.5. The equation for the vertical displacement is y= 1.5cosine(t times the square root of k/m), where t is time, k is the elasticity

305. ## science

what is the removal of small loose particles of rock by the wind hint 9 letters

306. ## weathering and erosion

what is the wearing away and removal of rock material hint 7 letters

307. ## chem/some1 check my work plz.

air bags actived when a severe impact causes a steel ball to compress a spring and electrically ignite a detonator cap. this causes NaN3 to decompose explosively according to the following reaction: 2NaN3(s)=2Na(s)+3N2(g) what mas of NaN3 must be reacted

308. ## weathering and erosion

what is the flow of water over earths surface hint 6 letters

309. ## physics

A rope attaches a tire to an overhanging tree limb. A girl swinging on the tire has a centripetal acceleration of 3.0 m/s^2. If the length of the rope is 2.1 m, what is the girl's tangential speed?

Find the next three numbers in this sequence and explain the reasoning; 2/3, 2/5, 6/25, 18/125,...

311. ## college

Doug Corporation purchased Leslie Company's entire business for $3,200,000. The fair market value of Leslie's net identifiable assets is$2,900,000.

312. ## weathering and erosion

sandblasting of rock by wind blown particles hint 8 letters

313. ## weathering and erosion

gravity causing rock or sediment to move downhill hint 12 letters

314. ## Calc

A 100 inch piece of wire is divided into 2 pieces and each piece is bent into a square. How should this be done in order of minimize the sum of the areas of the 2 squares? a) express the sum of the areas of the squares in terms of the lengths of x and y of

315. ## Math

Find the measures of two supplementary angles if the difference of their measures is 56 degrees I know supplementary angles are the sum of the measure if two angles is 180 degrees but then what is the question asking?

316. ## Physics

A stone is thrown vertically upwards from the top of a tower 50.0m high with an intial velocity of 20.0m/s. (a) whats the maximum height the stone reaches? (b) Whats the time it takes to reach the maximim height? (c) What is the total distance it covers?

I am a number between 75 and 150, my tens is three times my ones, my sum is 5 and my hundreds and ones are the same.

318. ## organic chemistry

What is the product of reaction of triphenylmethanol heated up with 40% HI in glacial acetic acid and then treated with sodium bisulfite?

319. ## Physics

A ball is thrown upwards on the moon with an initial speed of 35m/s. Calculate (a)the time taken to reach the maximum height. (b) the maximum height reached by the ball (c) Its velocity 3seconds after it has been thrown. (g=1.6ms^2)

Solve for x:9x^2-49=0

321. ## physics

As a young boy swings a yo-yo parallel to the ground and above his head, the yo-yo has a centripetal acceleration of 250m/s^2. If the yo-yo's string is 0.50 m long, what is the yo-yo's tangential speed?

322. ## soc101

Of the different forms of social structure described by Durkheim, Tonnies, and Lenski, which comes closest to matching your social setting? Use the following terms in your explanation: status, role, primary group, and secondary group.

323. ## english

How can a noun be misused?

324. ## Physics

A cylinder with a piston is filled with ideal gas. The gas temperature is held at 450 K. The cylinder is heated by an oven through a square metal rod connected between the oven and the cylinder. The rod has sides d = 2 cm and length L = 2.3 m. (a) If the

325. ## Statistics

Assume the body temperature of healthy adults are normally distributed with a mean of 98.2 degrees F and a standard deviation of .62 degrees F. If you have a temperature of 99.0 what is your percentile score?

326. ## physics

a 0.180 kg ball falls 2.5m. How much work does the force of gravity do on the ball?

327. ## English

How is Hamlet a tragic hero? I have these points 1. tragic flaws 2. he suffered throughout the play 3. ??? I need one more..I can't think of anything... someone help please.

328. ## Math

A= 10,560 ft x 2 mi

329. ## Physics

Intravenous infusions are often made under gravity. At what height should the bottle be placed so the liquid pressure is 700 mm-H2O?

330. ## Math

The 8th grade class is taking a field trip to a concert. Your bus averages 40 mph in the heavy traffic driving to the concert and 60 mph returning home. The total travel time is 2.5 hours. How far away is the concert? How long did it take to get to the

331. ## physics

An undersea research chamber is spherical with an external diameter of 3.70 m. The mass of the chamber, when occupied, is 26000 kg. It is anchored to the sea bottom by a cable. What is the tension in the cable?

332. ## physics

What is the total force on the bottom of a swimming pool 22.0 m by 8.9 m whose uniform depth is 1.6 m? What is the absolute pressure on the bottom of a swimming pool? What will be the pressure against the side of the pool near the bottom?

333. ## physics

An antelope is at a distance of 20.0 m from a converging lens of focal length 32.0 cm. The lens forms an image of the animal. If the antelope runs towards the lens at a speed of 5.50 m/s, what is the speed with which the image moves? 1/q= 1/32cm-1/2000cm

334. ## English

We just got done reading Animal Farm, by George Orwell. I cant come up with enough facts for the following questions. How does Napoloen and the other pigs control the animals through fear and intimidation? so far i have by 1)by killing other animals right

335. ## math

The lcm of two #s is 60. one of the #s is 20. other # is even & has only two prime factors. what is the other number?

336. ## chemistry

what are the names of the following compounds: BF3 N2O4 P4S7?

337. ## Chemistry

how would you sent up aluminum carbonate --> aluminum oxide + carbon dioxide. im guessing AlCo3 --> AlO3+Co2 but i don't think that's right

338. ## Englsih

1.who told us about computers 2.since the club meets in the afternoon 3.through the puddles. 4.before we ate dinner 5.toward us Use each phrase and clause in sentence then underline word that phrase/clause modifies. 1.The man who told us about computers

339. ## Math

5/9 (98.6 F - 32)=

340. ## Chemistry

Calculate the mass of air in an air-filled tire and the mass of helium in a helium-filled tire. What is the mass difference between the two? Assume that the volume of the tire is 857 , that it is filled with a total pressure of 125 psi, and that the

341. ## college;math

what is 7x+7y=21 in its slope intercept form?

342. ## college algebra

if i throw a ball up into the air it will not end up being 800 meters, in the air if it leaves my hand at 5 meters

343. ## Math

This irregular shape has 2m,2m,2m, 3m, 4m, 7m _2m_ _2m_ | |2m__3m_| | | | |________| 4 m 7 m how would I find the area if you can't tell how it is so you can't answer it I understand

344. ## calculus

Rice production requires both labor and capital investments in equipment and land. Suppose that if x dollars per acre aer invested in labor and y dollars per acre are investd in equpiment and land, then the yield P of rice per acre is given by the formula

345. ## Calculus 151

At what point in the first quadrant on the parabola y=4-x^2 does the tangent line, together with the coordinate axis, determine a triangle of minimum area?

346. ## Chemistry

I'm having a hard time with a question predicting the reaction (if any) of 1,2-dichloroethane and sodium iodide, sodium iodate, and sulfuric acid. Any suggestions? Thanks!

349. ## Science

What are the formulas for the following compounds? Nitrogen triiodide iodine monochloride tetraiodine nonaoxide

350. ## math

_______7m______ |\ / | | \ 2.8m 2.8m / | | \ / | | n \ / | | / \ n | | / \ | | / \ | / 2.8m 2.8m \ | ____________ \ | Find the area of each shaded region( n not shaded). Assume that all angles that appear to be right angles are right angles.

351. ## Physics

When a carpenter shuts off his circular saw, the 10.0-inch diameter blade slows from 4665 rpm to zero in 2.00 s. What is the distance traveled by a point on the rim of the blade during the deceleration? (in ft). What is the magnitude of the net

352. ## english

how do you misuse pronouns, verbs, adjectives, adverbs, prepositions and conjunctions. Im trying to help my little brother but im lost.

353. ## grade 10 social studies

why was italy the forst to use indo arabic numerals?

354. ## Physics

Near the equator, the Earth's magnetic field point almost horizontally to the north and has a magnitude of B = 50 micro T. What should be the magnitude and direction for the velocity of an electron if its weight is to be exactly balanced by the magnetic

355. ## history

were did king george III hire mecenaries from in order to fight the colonists

356. ## Quick Question

If the sleeve of your clothing catches on fire. Should you stop, drop and roll? Thanks.

357. ## Chemistry

Hi there, I am doing some data calculations for my lab, but I'm having some trouble. Given: Mass of ferrous ammonium sulfate=4.0g Mass of K3[Fe(C204)3] 3H20 =4.53g 1. Using the above mass of ferrous ammonium sulfate, calculate the theoretical yield of the

358. ## American History

I have to create a story about a patriot; what are some characteristics of one? Names, jobs, etc.

374. ## math

At Smart Middle School students are required to take 7 classes each grading period. At the end of each grading period a student is assigned a final grade (A, B, C, D or F) for each class for the grading period. A student’s overall grade point average for

375. ## math

On the last school day of the first grading period Michael learns his final grade for each class. If order is not important and we know he has earned at least 1 of each of the 5 letter grades, what is the total number of combinations of 7 final grades (one

376. ## English

Define Socialism. George Orwell doesnt think Socialism can work. WHY? How does he prove that it doesnt work by the way Animal farm ends?

377. ## AP Chemistry

Microwave ovens emit microwave radiation that is absorbed by water as heat. Suppose that the wavelength of the radiation that is 12.5 cm in an oven that has a power rating of 900 watts. (1W = 1 J/s) a) How many moles of photons are released per minute b)

378. ## Calculus II

(a) Use differentiation to find power series representation for f(x)=1/(1+x)^2 What is the radius of convergence? (b) Use part (a) to find a power series for f(x)=1/(1+x)^3 (c) Use part (b) to find a power series for f(x)=x^2/(1+x)^3 I found part (a) which

379. ## operating systems

what are to real life examples of the concepts dealock, starvation and race?

380. ## calc 151

two fences, 16 ft apart, are to be constructed so that the first fence is 2 ft high and the second fence is higher then the first. what is the length of the shortest pole that has one end on the ground, passes over the first fence, and then reaches the

381. ## accounting

Why is it important for an professional accoutant to understand the ethical trends discussed in this chapter? pg.25 question 14 Acc/260

382. ## 5th math

how do you estimated 7.842/6? than divide it. or 9.48/4 ? you have to estimated than divide it or what else? 3.84/6 should I make it turn to 39/6?

383. ## english

in the miracle worker what does it mean when helen touches her own cheeks

384. ## chemistry

Earth's population is about 6.5 billion. Suppose that every person on Earth participates in a process of counting identical particles at the rate of two particles per second. How many years would it take to count 6.0 x 10^23 particles? Assume that there

385. ## math

let’s say you have 4x feet of fencing, where x is any number. What, in terms of x, should the dimensions of the largest rectangular enclosure be, whose perimeter is 4x feet? What would the area be?

386. ## geometry

find AB if BD is a median of triangle ABC