# Questions Asked onOctober 19, 2011

1. ## chemistry

A wooden object from a prehistoric site has a carbon-14 activity of 10 counts per min.(cpm) compared to 40 cpm for new wood. If carbon-14 has a half life of 5730 years what is the age of the wood? Please get me started. Thank you

2. ## Geography

What is the relation between geography and chemistry

3. ## Finance

Nico Trading corporation is considering issuing long-term debt. The debt would have a 30 year maturity an a 10 percent coupon rate. In order to sell the issue, the bonds must be underpriced at a discount of 5 percent of face value. In addition, the firm

4. ## Probability

Of 500 employees, 200 participate in a company's profit sharing plan(P), 400 have major insurance coverage(M), & 150 employees participate in both programs. Construct a Venn diagram and find out the probability that a randomly selected employees a) will be

5. ## chemistry

A patient receives 3.0 mL of a solution containing technetium-99m for a breast image. If the activity of the technetium-99m is 9.5mCi/mL what is the dose received by the patient? Answer Choices are: a)29mCi b)3.2mCi c)320uCi d)28.5mCi So I times 3.0mL *

6. ## calculus

A car leaves an intersection traveling east. Its position t sec later is given by x = t2 + t ft. At the same time, another car leaves the same intersection heading north, traveling y = t2 + 3t ft in t sec. Find the rate at which the distance between the

7. ## statistics

Five percent of all items sold by mail order company are returned by customers for a refund. Find the probability that, of two items sold during a given hour by this company, a) both will be returned for a refund b) neither will be returned for a refund

8. ## physics

A 300 lb bungee jumper wants to jump from the top of a 230 ft high bridge and be able to just touch the water below (Part A figure) . Given that the bungee cord has a spring constant of 11.1 lb/ft, what should the bungee cord's relaxed length, l, be for

9. ## physics

If your boat weighs 1600 N, how much water will it displace when it’s floating motionless at the surface of a lake?

10. ## Math

Round 5,024 to the nearest thousands

11. ## Chem

A radiation lab orders 64uCi of P-32. After 42 days the activity of the sample is 8.0uCi. What is the life of P-32? Thanks

12. ## Physics

Work of 730 J is done by stirring an insulated beaker containing 80 g of water. What is the change in the temperature of the water? Please show calculation

13. ## physics

A bobsled slides down an ice track starting (at zero initial speed) from the top of a(n) 165 m high hill. The acceleration of gravity is 9.8 m/s2 . Neglect friction and air resistance and determine the bobsled’s speed at the bottom of the hill. Answer in

14. ## vocab

The living room looked immaculate except for a lump under the carpet, an gaunt

15. ## Super Easy Math Question

3x^2-12x+11=0 Solve for x.

16. ## chemistry

Phosphorus trichloride gas and chlorine gas reacts to form phosphorus pentachloride gas: PCL3(g) +CL2(g) = PCL5(g). A vessel is CHARGED WITH A MIXTURE OF PCL3(g) and CL2(g), which is allowed to equilibrate at 450K. At equlibrium the partial pressures of

17. ## Calculus

find the dy/dx of s(t)= (4/3pi)sin3t+(4/5pi)cos5t

18. ## PYSICS

The upward normal force exerted by the floor is 600 N on an elevator passenger who weighs 610 N. What is the reaction force to the upward normal force exerted by the floor? What is the reaction force to weight of the passenger? What is the magnitude of the

19. ## Chemistry

Consider the chemical reaction C + H2O -----> CO + H2 How many liters of hydrogen gas are formed From the complete reaction of 1.07 mol of C? Assume that the hydrogen gas is collected at a pressure of 1.0 atm and the temperature of 315K So I'm looking for

20. ## Physics

A soccer ball is kicked off a bridge with a height of 36 m. The ball travels 25 m horizontally before it hits the pavement below. What was the soccer ball’s speed when it was first kicked?

21. ## chemistry

Write the balanced chemical equation for the reaction of sodium bicarbonate with aqueous acetic acid to produce carbon dioxide, water, and sodium acetate. Follow the example set by the sodium bicarbonate.

22. ## Physics

Two Diamonds begin a free fall from rest from the same height, 1.0 s apart. How long after the first diamond begins to fall will the two diamonds be 10m apart? Please help, I am very confused with this question, I have completed all other but I am unsure

23. ## Physics

Multiple choice. The airbag in a car works in a collision by . . . a. increasing the time of the impact to the person. b. reducing the impulse to the person. c. reducing the momentum of the person. d. increasing the force on the person. A cannonball shot

24. ## chemistry

The principal component of many kidney stones is calcium oxalate,CaC2O4. A kidney stone recovered from a typical patient contains 8.50×10^20 formula units of calcium oxalate. How many moles of CaC2O4 are present in this kidney stone?

25. ## Pre Calc

an open box is to be formed by cutting squares from a square sheet of metal that is 10 cm on a side and then folding up the sides. What i the maximum volume of the box?

26. ## Calculus

A trough is 12 ft long and has ends that are isosceles triangles that are 1 ft high and 1.5 ft wide. If the trough is being filled at a rate of 11 cubic feet per minute, how fast is the height of the water increasing when the height is 7 inches?

27. ## Calculus

A lighthouse is located on a small island 4 km away from the nearest point P on a straight shoreline. Its light makes 3 revolutions per minute. How fast is the beam of light moving along the shoreline when it is 1.7 kilometers from P ?

28. ## Math

66 2/3percent of what number is 54????????????

29. ## pyshics

A small rock moves in water, and the force exerted on it by the water is given by the equation Fd = kv, where k is a constant. The terminal speed of the rock is measured and found to be 2.0m/s. The rock is projected upward at an initial speed of 6.0m/s.

30. ## maths

Find the first quadrant area under y = e -2x

31. ## Math

What is the median of the following set of numbers? 57, 54, 52, 54, 50, 49, 53, 58, 48 ?

32. ## English

Read the following passage out loud, and then answer questions 5–7. “Its pendulum swung to and fro with a dull, heavy, monotonous clang; and when the minute-hand made the circuit of the face, and the hour was to be stricken, there came from the brazen

33. ## Finance

____ in the beta coefficient normally causes____ in the required return and therefore ____ in the price of the stock, all else remaining the same. A. An increase, an increase, an increase B. An increase, a decrease, an increase C. An increase, an increase,

34. ## algebra

If your teacher tells you to do questions 6 through 19 in your math book for homework, how many questions is that?

35. ## Physic

A 55-kg female bungee jumper fastens one end of the cord (made of elastic material) to her ankle and the other end to a bridge. Then she jumps off the bridge. As the cord is stretching, it exerts an elastic force directed up on her. Calculate her

36. ## math

Dtermine an equation, in simplified form, for the family of cubic functions with zeros 2 and 4+-sqrt. 3.

37. ## Physics

The conducting rod ab shown below makes frictionless contact with metal rails ca and db. The apparatus is in a uniform magnetic field of 0.855 T, perpendicular to the plane of the figure. The length L of the rod is 25 cm. (a) Find the magnitude of the emf

38. ## chemistry

calculate the density of oxygen,O/2 under each of the followig conditions-stp,1.00 atm and 35.0 celsius?

39. ## Physics

A projectile is fired with an initial speed of 28.0 m/s at an angle of 65 degrees above the horizontal. The object hits the ground 9.5 seconds later. a) How much higher or lower is the launch point relative to the point where the projectile hits the

40. ## C++ program

Create a source code that will prompt for recive and total a collection of payroll amounts entered at the terminal untill a sentinel amount of 999 is entered. Here is what i have so far i know not much but am not that great at this class. #include #include

41. ## Short essay proofreading check

Eric Yiadom is a volcanic tempered basketball player whose attitude often leads others to malign him. He is tall and slim with dark olive skin and has short red hair as hot as his temper. On the court he lacks good sportsmanship. Always causing a tantrum

42. ## Physics

A particle of mass 5 kg is acted upon by a horizontal force of magnitude 16 N for 8 seconds, in which time it moves from rest until it is traveling with a speed v m/s. The particle continues to move with this speed for the next 15 seconds. it is brought to

43. ## physics

A rubber band of relaxed length 6.3 cm stretches to 10.2 cm under a force of 1.0 N, and to 16.5 cm under a force of 2.0 N. Does this rubber band obey Hooke's Law?

44. ## English

Can you please check these sentences, too? Thank you very much for your invaluable help. 1)In his panegiric on beauty Lord Henry says that when people grow old, they become hollow-cheecked, dull-eyed and sallow. 2) The corrupted image on (or in) the

45. ## Chemistry

a 1.00-mol sample of phosphorus pentachloride placed in 10.0-L reaction flask and allowed to come to equilibrium at 250 degrees celsius; PCL5(g) = PCL3(g) Cl2(g) if the amount of chlorine in the equilibrium mixture is0.470 mol, calculate (a) the

46. ## chemistry ap!!!

Neutron diffraction is an important technique for determining the structures of molecules. Calculate the velocity of a neutron needed to achieve a wavelength of 0.989 Å. i used the equation and got 4.37, but its not right! pleas help someone

47. ## math

a farmer can afford 8000 square meters of fence and would like to come up with the best way to use this fence, such that: - he wants all the pens to be of the same rectangular shape. - he wants to give each calce of his farm as much space as possible. - he

48. ## algebra

angela ate at the same restaurant four times each time she ate a salad and left a 5 dollar tip she spent a total of 54 dollars write and solve an equation to find the cost of each salad

Please answer these problem for me.Thanks so much. 1. Border's Bookstore ordered 800 art books. On verifying the order, only 160 books were actually received. The percent of the order missing was: 2. The net price equivalent rate of 9/15/18 is: 3. If the

how do i write a real-world problem where you would have to multiply 120 and 75

51. ## physics

An aircraft carrier operating in the Persian Gulf is about to receive aircraft. There is a wind from the north at 10kts. In preparation to receive aircraft. the Captain orders the carrier to alter its heading to bring the ship directly into the wind and

52. ## physics

The pilot of a plane looks at her speedometer to see that she is traveling at 165 km/h and she is heading north. An observer on the ground looks at the plane and it appears to be going 145 km/h. What is the velocity of the wind that is affecting the plane?

53. ## Algebra 2

You have made scores of 81, 76, 82 on Three quizzes. What is the least you can make on this quiz to have an average of at least 80? I tried solving this problem, but them got lost. How do i solve it?

117. ## physics

A ball is dropped from the initial height h1 above the concrete floor and rebounds to a height of equal to 60% of the initial height h1. What is the ratio of the speed of the ball right after the bounce to the speed of the ball just before the bounce? This

118. ## calculus

when working with composite functions, does fog=gof? how do i create two functions,f(x) and g(x) to show that this statement is either true or false.i need to explain my reasoning

119. ## Algebra

I need help with this problem: 3/4 + 5/4 + 1/4 = Thanks

120. ## Maths

the pages in jacks book are numbered from 1 there are 555 didgits that these numbers add up to, how many pages in the book?

121. ## English

his is being graded along with this poem (I KNOW IT'S LONG BUT DON'T BE SCARED TO READ IT. I NEED THE COMMENTS): When nothing else remains, I want to know if you’ll stand by my side. If you’ll be the light of my path when the sun shuts down. I want to

122. ## math

number less than 200 sum of the digit is 6 product of the digit is 0 each factor of 75 is its factor too?

123. ## Chemistry

A1.367g sample of an unknown organic compound is combusted with oxygen to give only 1.459 g H2o and 3.055 g of Co2. What is the empirical formula of the compound?

124. ## Math

Draw Base Ten Blocks to show the number five hundred fifteen.

How do you divide 836 by 22, using compatible numbers? Is there a quick way to figure out the compatibility?

How do you divide 836 by 22, using compatible numbers? Is there a quick way to figure out the compatibility?

127. ## Can somehelp me with this ASAP plz?!?!?! Stats

For a particular sample of 63 scores on a psychology exam, the following results were obtained. First quartile = 57 Third quartile = 87 Standard deviation = 9 Range = 51 Mean = 72 Median = 72 Mode = 98 Midrange = 57 I. What score was earned by more

128. ## algebra

what is the degree of the polynomial 4x^2 - 6x + 1?

129. ## Science

Where was technetium first synthesized?

130. ## Calculus

How do you integrate 3∫(1)/(x²+1)² dx ? Thank you!

131. ## Ochem

A student needed to determine the percent composition of a mixture that contained fluorene and benzoic acid. The student took 283 mg of the mixture and used the extraction method to separate the components. Then both compounds were recrystallized and

132. ## physics

suppose a plane drops water from 1024 feet. how many seconds will it take for the water to hit the ground?

133. ## Physics

How much kinetic energy does a 1 kg ball have if it has a velocity of 10 m/s? a. 100 J. b. 50 J. c. 10 J. d. 5 J. A ping pong ball and a golf ball move with the same kinetic energy. Which is moving fastest? (golf balls are heavier than ping pong balls). a.

Eric Yiadom is a hotheaded volcanic tempered basketball player whose attitude often leads others to malign him. He is tall and slim with dark olive skin and has short red hair as hot as his temper. On the court he lacks good sportsmanship. Deliberately,

135. ## algebra

evaluate and leave the solution in scientific notation: (2 x 10^4)(5.1 X 10^2)

136. ## algebra

what is the best description of 4x^2 - 6x + 1? monomial,binomial, trinomial,or polynomial

364 plus 519 round each number the greatest place value to estimate the sum of:

138. ## Vocabulary

Hello Jiskha, I wanted to know the meaning of the word BRACE, & how to use it in our daily Vocabulary. Thanks in Advance.

139. ## Writing/grammar

________ stories seemed unbelievable. A. Survivors B. Survivor's C. Survivors' D. Survivors's

140. ## Algebra

What is the 20th term in the following arithmetic sequence? 1/2, 1, 3/2, 2

141. ## math

Lcm of 2 and 3

142. ## chemistry

What is the number of moles of NaOH in 1.91 mL of a 872.25 molar solution?

143. ## Physics

Two objects are connected by a light string that passes over a frictionless pulley, and two objects are on either side of the string. There is a hanging object off the vertical side of the incline weighing 10.0 kg. The 3.50 kg object lies on a smooth

144. ## Arthimetic

The following sequence is arithmetic. 2, -2, 2, -2, 2, True or False I believe it's false

145. ## Geometry

Given that ABC XYZ, mA = 40, and mC = 55, find mY.

146. ## English

I have one sentence that has to be made into a paragraph. "Using Agencies in your Area" HOw in the world can I do that?

147. ## dividing with polynomials

solve by using polynomial division(16ab^3c-10ab^2c^2+12a^2b^2c/(4a^2b) i always get 4b^2-2b+3b+-2c^3/4a^b

148. ## chemistry

Need the formula to figure out the answer to question calculate the mass in grams of 4.08*10 negative 8 mol of neon

149. ## physics

A container of hot water at 80 deg C cools to 79 deg C in 15 seconds when it is placed in a room that is at 20 deg C. Use Newtons law of cooling to estimate the time it will take for the container to cool from 70 deg C to 69 deg C.

150. ## pre algerbra

how do you do this problem5(k-7)-k+7

151. ## home economics

Examples of cooking

152. ## Biology

What is Parkinson's & Alzheimer's disease? Explain each based on their causative agent,means of transsmission,prevention&control.

154. ## Chemistry

what will be the final temperature if 2000g of copper at 95 degrees loses 10 kcal of heat?

155. ## biology

List 2 ways in which prokaryotic and eukaryotic cells are alike and 2 ways in which they are different. Is this correct? Alike= cell membrane and DNA Different=ribosomes and mitochondria

156. ## Stats

For a particular sample of 63 scores on a psychology exam, the following results were obtained. First quartile = 57 Third quartile = 87 Standard deviation = 9 Range = 51 Mean = 72 Median = 72 Mode = 98 Midrange = 57 I. What score was earned by more

157. ## Socials - World War I

Hey, could someone please give me some documentary links telling about the world war I? The teacher also showed us this documentary in class, and I was trying to look for it, but I cant find, I think it was called Canada in World War I. And I had some

158. ## Algebra

I need assisatnce with this. I do not want the answer I just want some guidence on how I should start it. The width of a rectangle is 5 ft, its length is (3x+2) ft, and its area is 75 ft². Find x

159. ## algebra

An algebra book weighs 6 oz less than twice as much as a grammar book. If 5 algebra books weigh the same as 8 grammar books, how much does an algebra book weigh?

160. ## statistics

There are 44 mathematics major and 163 computer science majors at the college. How many ways are there to pick 2 representatives, so that one is a mathematics major and the other is a computer science major?

161. ## Physics

A tennis player hits a ball 2.0 m above the ground. The ball leaves his racquet with a speed of 15.0 m/s at an angle 5.5 degrees above the horizontal. The horizontal distance to the net is 7.0 m and the net is 1.0 m high. By how much does the ball clear

162. ## American Literature

In Patrick Henry's Speech To the Virginia Convention, what would be a weak argument in his speech? I know Give Me Liberty or Give Me Death would be a powerful argument as well as The War Has Actually Begun.

163. ## C++ program

Create a source code that will prompt for recive and total a collection of payroll amounts entered at the terminal untill a sentinel amount of 999 is entered. Here is what i have so far i know not much but am not that great at this class. #include #include

164. ## pre algebra

how do you show your work on the problem 20u+ -6(u+5)

165. ## college math

find the slope of the tangent line to the graph of f at the given point. Graph f and the tangen line. 9. f(x) = 3x +5 at (1.8) 10. f(x)=2x + 1 at (-1,3) Please, help me with this problems. thanks

166. ## geometry

a rectangular box is to be constructed with its length four times the size of its width, and its height one half the size of its length. the volume of the box must be 1000 cubic centimeters. find the dimensions of the box

167. ## biology

List 2 ways in which prokaryotic and eukaryotic cells are alike and 2 ways in which they are different. Is this correct? Alike= cell membrane and DNA Different=ribosomes and mitochondria

168. ## Math

Miles says 47+36 is the same as 50+33. Is this reasonable? Explain.

169. ## Arthimetic

Find S11 for 1 + 2 + 4 + 8 + I got 2047 Other choices are 1023 B. -1023 C. -2047

170. ## PHI103 Informal Logic

If P, then Q, where P and Q are both sentences. P is the antecedent of the conditional—the ‘if’ part—and Q is the consequent—the ‘then’ part. The corresponding conditional of an argument contains the conjunction of the premises in the

171. ## math/117

simplify before multiply explain and show all steps

172. ## math

Jonah wants to add 43+19. He added 43+20. What step should he take next?

173. ## Korean

Can someone help me with the grammar of this sentence? Or just translate the english to korean? 그는 항상 연애운이 없었어요. It's suppose to translate to 'He is always been unlucky in love' Thank you!

174. ## Math

How many miles are in 500,000 square feet?

175. ## Mechanics

Light travels at 3*10^8 m/s. After how many seconds can the lighting reach a distance of be heard 2310 meters away from where it happened?

176. ## math

write down the gradient and y-intercept of the line 2y=3x+10 step by step

177. ## English

Thank you. Could you please check these sentences, please? Thank you. 1) Storm is a participant in the triathlon competition. She is going to reach (I don't know the correct verb) the finishing line. She is wearing a pinkish half zip-up T-shirt with an

178. ## math

the expression 6 times radical 20 divided by 3 times radical 5 is equvilent to 1. 3 radical 15 2. 2 radical 15 3. 8 4. 4

179. ## Socials

Please take a look at my World War I post, thanks.

180. ## physics

a plane on a runway accelerates from rest for 6.8 seconds. If the runway is 450 meters long, what was the plane's acceleration?

181. ## math

how estimating the quotient helps you place the frist digit in the quotient of a divison problem

182. ## Mechanics

A particle of mass 5 kg is acted upon by a horizontal force of magnitude 16 N for 8 seconds, in which time it moves from rest until it is traveling with a speed v m/s. The particle continues to move with this speed for the next 15 seconds. it is brought to

183. ## physics

8. A pitcher throws a baseball off a 20m high cliff into a canyon at 30degrees above the horizon at an initial velocity of 35m/s. How far will the ball travel horizontally from the pitcher? Assume no air resistance. 9. How high will the ball get from the

184. ## algebra

When factored completely, 4x^2y - 8x^2y^2 + 6xy^2 = 2xy(2x - 4xy + 3y). true or false

185. ## memorial university

The highest barrier that a projectile can clear is 13.8 m, when the projectile is launched at an angle of 14.9° above the horizontal. What is the projectile's launch speed?

186. ## College math

Please, help me with this problem: frind the derivative of each function at the given number. 21. f(x)= -4x + 5 at 3 22. f(x)= -4 + 3x at 1 thanks

187. ## Chemistry

Use the data in Table 15.3 (in the book Chemistry after Raymond Chang) to calculate the equilibrium constant for the following reaction: HCOOH(aq) + OH-(aq)= HCOO-(aq) + H2O(l)

188. ## English

Please help me find my errors The Lottery takes place on a beautiful summer day in a small town. Although the location of the town is never given, it appears to be in a rural community. The story begins as a regular summer day, but has a surprising ending.

189. ## physics

A six kilogram object undergoes an acceleration of 2.0 meters per second squared. Part a. What is magnitude of the net force acting on the object? Part B. If the same force is applied to a 4 kilogram object what acceleration is produced?

190. ## Math

where would you put the parentheses to make this true 124-6 x 0 + 15 = 34

191. ## college math

Use a table to frind the indicated limit. 3 7. lim(4x ) x-2 2 8. lim (2x + 1) x-3 x + 1 9. lim 2 x-0 x + 1

192. ## Finance

Which of the following are good candidates for ascertaining the value effects with an event study, and why? 1. An acquirer wants to buy the firm. 2. The CEO dies 3. The CEO ages 4. Positive earnings surprise at the annual meeting 5. Purchase of a new

193. ## college math

2 - x 10. lim 2 x-0 x + 4 Please, help me, thanks

194. ## Stats

In each of the four examples listed below, one of the given variables is independent (x) and one of the given variables is dependent (y). Indicate in each case which variable is independent and which variable is dependent. I. Rainfall; Crop yield II. Taxi

195. ## Algebra 1

Factor each completely. 10b^2-4b-6 ^means exponent

196. ## Comp 156

What is the definition of a cause and effect essay?Describe a cause and effect situation related to the effect of video games addiction on society.

197. ## physics

River A & B flow into river C. River A is 40 ft wide and is flowing at an average of 2.47 mph. River B is 25 ft wide and has a flow rate of 1125 cubic feet per second. Assume all rivers have a uniform depth of 15 ft. If river C is 100 ft wide, what is its

198. ## algebra

(5x to the 2nd power minus 4x plus 29) plus (3x to the 2nd power plus 8x minus 77)

199. ## physics

To make a bounce pass, a player throws a 0.60-kg basketball toward the floor. The ball hits the floor with a speed of 5.5 m/s at an angle of 72° from the vertical. If the ball rebounds with the same speed and angle, what was the impulse delivered to it by

200. ## problem solving

The greatest common factor of two nubers is one. What do you know about the numbers.

201. ## child day care mgmt

today ur going to talk about vitamin c with ur class . from which food group you willl choose ur snack?

202. ## Math

find d^85y/dx85 if y = sin x ?? I want the final rule because the solution will be repeated and therefore there will be a particular rule?

203. ## Math

find the slope of the curve x^3 y^3 + y^2 = x + y at the point (1,1) and (1,-1)??

204. ## Physics

A 2kg block is in equilibrium on an incline of 60 degrees. find fn of the incline on the block

205. ## statistics

Assuming that the data are normally distributed with a mean of 45 and a standard deviation of 3.25, what is the z-score for a value of 40? (Points : 6) 1.54 2.38 -1.36 -1.54

206. ## memorial university

An Olympic basketball player shoots towards a basket that is 5.66 m horizontally from her and 3.05 m above the floor. The ball leaves her hand 1.74 m above the floor at an angle of 42.0o above the horizontal. What initial speed should she give the ball so

207. ## math

(5x^2 - 4x + 29) plus (3x^2 8x - 77)

208. ## physics

Suppose the fame of a gas burner stove emits light just like a blackbody. The flame appears blue,emiting most of its light at a wave lengh of 475nanometers. what is the temperature of the flame? How do I solve this?

209. ## English (Journal Entry)

Is Emma Amos is the first African-American Painter ?

210. ## chemisrty

A 853 solution is diluted to a volume of 1.50 and a concentration of 7.00 . What was the initial concentration? PLEASE HELP

211. ## his 103

1. In a number of instances (such as the Tea Act of 1773 and the change in 1772 so that payment of governors' salaries came from the king and not provincial legislature) the course textbook notes, to some degree, how the impetus for these acts was not

212. ## trig

sinx=square root of 3 over 2, cosx=1 over 2 i want to find all six trigonometric functions

213. ## algebra

Solve by factoring: 3x^2 + 2x - 1 = 0

(x+2)(x+7)

215. ## algebra

Factor the trinomial: 6x^2 + 7x - 20

216. ## Calc

Use substitution to evaluate the indefinite integral: The integral of [ (sq. root (1 + ln x)) ((ln x)/x) dx] Im confused on what i should substitute u and du for. Thank you so much!!

217. ## algebra

Factor the trinomial: 2x^2 + 7x + 3

218. ## algebra

Factor the trinomial: 3x^2 + 11x + 6

219. ## Phyics

Sue is swinging a yo-yo around her head. What happens to the size of the centripetal acceleration if the mass of the yo-yo is doubled without changing the period or length of the string?

220. ## algebra

Solve by factoring: 6x^2 + x = 5

221. ## Physics

A coin is placed on a stereo record revolving at 33 1/3 revolutions per minute. (b) Find the acceleration of the coin when it is placed 5.0, 10, and 15 cm from the center of the record. 2 ____ . m/s2 (5.0 cm) 3 ____ . m/s2 (10 cm) 4 ____ . m/s2 (15 cm)(c)

222. ## To SraJMcGin

Could you post that link again, Im not getting the link to that documentary, these other sites pop up, like amazon, and I don't want to purchase it.

223. ## Chemistry

In order to make 1200mL of 2.0 M of sodium hydroxide, NaOH, from 9M NaOH, how many mL of the 9M NaOH should be used?

225. ## algebra2

simplify 216 (1/4) slove for the variable 8a-9=7a-6 find the slope of (0,2),(-2,-2) find the slope of 2x+4y=8

226. ## Chemisrty

Determine which law is appropriate for solving the following problem. What volume will 1.56 liters of a gas at 27°C and 745 mmHg of pressure occupy at 100°C and 700 mmHg of pressure? Law used: Boyle's Law Charles' Law Combined Gas Law

227. ## Math

harmonic motion : y=(1/12)(cos8t-3sin8t)

228. ## Chemistry

Write an equation showing the bicarbonate ion acting as an acid.

229. ## physics

Superman throws a boulder of weight 3800 N at an adversary. What horizontal force must apply to the boulder to give it a horizontal acceleration of 13.5 m/s^2?

230. ## physics

Suppose that you lob the ball with an initial speed of v = 16.1 m/s, at an angle of θ = 51.9° above the horizontal. At this instant your opponent is d = 11.2 m away from the ball. He begins moving away from you 0.400 s later, hoping to reach the ball and

231. ## chemistry

If you used 0.155 mL of acetic anhydride, and 0.165 g of p-aminophenol what was your theoretical yield of acetaminophen? ___________g If you recovered 0.173 g of acetaminophen, what was your percent yield? ________%

232. ## chemistry121

What mass of silver chloride can be produced from 1.25 L of a 0.264 M solution of silver nitrate?

233. ## chemistry

If you used 0.155 mL of acetic anhydride, and 0.169 g of p-aminophenol what was the limiting reagent? Choice is either: 1. acetic anhydride or 2. p-aminophenol ________mol? How many moles of the non-limiting reageant remained after the reaction was

234. ## Temperature

What is the Kelvin temperature for 30°C?

235. ## physics

An Olympic basketball player shoots towards a basket that is 5.66 m horizontally from her and 3.05 m above the floor. The ball leaves her hand 1.74 m above the floor at an angle of 42.0o above the horizontal. What initial speed should she give the ball so

236. ## physics

the constant velocity of a ball is (3x+2y)m/sec. find the distance traveled in the y direction in 2 seconds (x and y are unit vectors)?

237. ## science

A 80.0 kg girl lowers herself to the ground from a height of 11.6 m by holding onto a rope running over a pulley to a 56.0 kg sandbag. What is the magnitude of the acceleration of the girl?

238. ## algebra

what steps would you take to answer 2(x-3)-17=13-3(x+2)

239. ## physics

trying to raise a barrel using sections of pipe.The three objects are horizontal cylinders resting on level ground. The barrel has a mass of 100 kg and its diameter is 2.0m. Each pipe has a diameter of 0.50 m. What minimum horizontal force must his feet

240. ## chemistry121

What mass of silver chloride can be produced from 1.25 L of a 0.264 M solution of silver nitrate?

241. ## Statistics

Suppose we have a population of scores with a mean (ì) of 200 and a standard deviation (ó) of 10. Assume that the distribution is normal. Provide answers to the following questions: What score would cut off the top 5 percent of scores? What score would

242. ## US History

14. The main argument in support of the Bill of Rights was that A. they would help opponents of slavery gain the upper hand B.without them the US would be a republic government C.they would protect them the people from a tyrannical government D.without

243. ## statistics

f(y)= (1/c)e^(-y/2) if y is greater than or equal to 0 and f(y)=(1/c)e^(y/2) if y is less than 0 a) What is c? b)What is the probability distribution function?

244. ## geometry

if ed= x+4, and dm= 3x-8 find ed,dm and eb

245. ## Biology

Do plants make their own cell wall or is it already there ?

246. ## geomatry

give and example of an angle that foes not have a complement. In general, what is true a about an angle that has a complement?

247. ## calculus

write a differential equation for the following. a cell starts at a volume of 400m^3 and gains volume at a rate of 3m^3/s

JOHN BROUGHT 94 STICKERS AS WELL.THEN BOUGHT 8 STRIPS OF 10 AND SOME SINGLES. HOW MANY SINGLES DID HE BUY

249. ## Science/ help with finding the independant variabl

Forty students participated in groups of 4-6. They were given a questionnaire to test their knowledge of the Black cultural stereotype. Subjects were asked to list the components of the stereotype. After listing the components of the stereotype, subjects

250. ## nursing

List three key staff of a public health department other than the community or public health nurse.

251. ## math

why 13 is odd number. what is definition of odd and even numbers

252. ## Math- Linear Equations

Do linear equations need to have negative numbers???

253. ## physics

A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 28.9 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 144 m), the block swings

254. ## science

Gravity on the surface of the moon is only 1/6 as strong as gravity on the Earth. What is the weight of a 15 kg object on the Earth? The acceleration of gravity is 10 m/s 2

255. ## chemistry

If you have 1.50 moles {\rm H_2}, how many grams of {\rm NH_3} can be produced?

256. ## Physics, help with a similar problem I just posted

I posted a the same problem with different numbers a minute ago. The answer to the problem below (same as the other with different numbers) is 28 degrees. Maybe this will help to solve it? Thanks! A block is hung by a string from the inside roof of a van.

5/2x-8/1=-3

259. ## math

For each right triangle, draw the rectangle made by drawing sides opposite the two shorter sides in the triangle. Find the area of each rectangle

260. ## social studies

what effect did the war between Spain and England have on England's attempts to colonize Roanoke Island?

261. ## physics

An airplane flies north at a constant speed for 6h and covers a distance of 2400km. What is the plane's velocity? The acceleration?

262. ## Science

On the H-R diagram, red supergiants like Betelguese lie where?

263. ## Algebra

How do i find the slope and y- intercept of 5X+2Y=7 ?

264. ## physics

A 450 g block is at rest on a horizontal surface. The coefficient of static friction between the block and the surface is 0.670, and the coefficient of kinetic friction is 0.380. A force of magnitude P pushes the block forward and downward as shown in the

265. ## physics

What is the net flux through the surface when charge is at the centre?

266. ## engineering

The 50-kg stone has a speed of v_A = 8m/s when it reaches point A.Determine the normal force it exerts on the incline when it reaches point B. Neglect friction and the stone's size.

267. ## algebra,math

Factor the GCF and then factor the resulting binomial: 50x^3 - 128x

268. ## physics

Question Part Points Submissions Used 1 2 3 4 5 –/5 –/5 0/5 –/5 2/2 0/10 0/10 1/10 0/10 2/10 Total 2/22 A block of mass m = 2.00 kg is released from rest at h = 0.400 m from the surface of a table, at the top of a θ = 35.0° incline as shown below.

270. ## Math

The sum of two numbers is 144. Double the first number minus thrice the second number is equal to 63. Determine the two numbers

271. ## Healthcare

Explain the position on national health care spending in the United State.

272. ## geomatry

To support a young tree, you attach wires from the trunk to the ground. The abtuse angle the wire makes with the ground is supplementary to the acute angle the wire makes, and it is three times as large. find the measures of the angles? Thank you for yr

273. ## geometry

find the equation of the altitude to the side AB given the points A (1,0) B(5,-3) C (3,4)

n/3-8=-2 what is n?

275. ## Chemistry

During an experiment involving separation, you forget to label your beakers and you are unsure of which beaker contains the aqueous layer and which contains the organic layer. How could you quickly and efficiently determine which one is the aqueous layer?

can u give me guidelines to solve this exercise or tell me if they are right please? Avoid discriminatory language: change these sentences to avoid discriminatory language. 1. any worker who ignores this rule will have his salary reduced. my answer: The

277. ## physics

A billiard ball moving at 6.00 m/s strikes a stationary ball of the same mass. After the collision, the first ball moves at 5.39 m/s, at an angle of 26.0 with respect to the original line of motion (a) Find the velocity (magnitude and direction) of the

278. ## Algebra

when finding X or Y intercepts, what do you do if you find an improper fraction. (3X-y=-7) Y- is easy, but when i get X (3X=-7) I cant do (X=-7/3)

279. ## I need help with a conclusion for this paragraph

Please help me with a conclusion for my paragraph... Eric Yiadom is a hotheaded volcanic tempered basketball player whose attitude often leads others to malign him. He is tall, slim with dark olive skin and has short red hair as hot as his temper. On the

280. ## Englsh

I need to check and simplify these long-winded sentences. I really hope you can help me. 1) After making/expressing his wish for eternal beauty,he starts leading a sinful life demonstrating a great insensitivity for every life he ruins. (??) 2) The

281. ## Chemistry

3. The solubility of BaSO4 at 25C is 9.04 mg/L. Based on this, how many grams and moles of BaSO4 remained dissolved in the 100 mL of solution? What percent of your yield does this represent? 2. The precipitate is washed with warm water not cold, why is

282. ## Biology

Difference between medukka and pyramid in a kidney?(:

283. ## Math

A tile is 38 cm long and the space between the tiles is 0.8. How many tiles are required to build a floor 5.82 m long?

284. ## math

the folowing equation 9+8x7-6x5+4x3+2=105 How do u get this?

285. ## algebra

Evaluate 11 - 8 ÷ (1/3 + 1/5)

286. ## Math

All the seats in the theater are divided into 8 groups.There are 40 seats in each group.Write and solve a division equation to find how many seats there are in the theater.

287. ## C++ program

Please help am not very good at c program. Am supposed to create a source code that will display to the screen the first 20 numbers with their squares and cubes.

288. ## Math

A tile is 38 cm long and the space between the tiles is 0.8. How many tiles are required to build a floor 5.82 m long?

289. ## math

express the following in standard notation 2 x 10^-5

290. ## Economics

I am studying at University,so my subject is more difficult.So I need a help on my subject.Do you know about a best economic web site?If you know the best economic web site,please write on my post.Thanks for your help