Questions Asked onOctober 6, 2013

1. math

I need the answers to the why did the banana go out with the prune worksheet. I already have the answer to the riddle, but I need the numeral answers please.

2. Physics

A track star in the long jump goes into the jump at 12 m/s and launches herself at 20.0° above the horizontal. How long is she in the air before returning to Earth? (g = 9.81 m/s2)

3. english

6.Read the following excerpt from "The Middle Passage" by Olauduh Equaino. Immediately another quite dejected fellow who on account of his illness was suffered to be out of irons also followed their example and i believe many more would soon have done the

4. general chemistry

a 5.95 g sample of AgNO3 is reacted with excess BaCl2 according to the equation 2AgNO3 + BaCl2 yields 2AgCl + Ba(NO3)2 to give 3.17 g of AgCl. What is the percent yield of AgCl?

5. physics

Derive a formula for the maximum speed vmax of a simple pendulum bob in terms of g, the length ℓ, and the maximum angle of swing θmax. Express your answer in terms of the variables g, l, and θmax.

6. chemistry

If 4.0L of a 4.7M SrCl2 solution is diluted to 45L , what is the molarity of the diluted solution?

7. Geometry

1. Twyla's pet cat weighs 8lb. Her pet hamster weighs 12 ounces. What is the ratio of her cat's weight to her hamster's weight? 2. The non-right angles of a right triangle are in the ratio 1:5. Write the equation that could be used to find the measure of

8. chem 2

calculate kc for reaction I2 (g)+Cl2 (g)⇌2ICl(g )Kp=81.9 (at 298 K)

9. Chemistry

What is the purpose of adding 100 mL of distilled water to a beaker containing metal nitrate solution?

10. Physics

In proton-beam therapy, a high-energy beam of protons is fired at a tumor. The protons come to rest in the tumor, depositing their kinetic energy and breaking apart the tumor’s DNA, thus killing its cells. For one patient, it is desired that 0.10 J of

11. MATH - URGENT!!!

In how many ways can you spell the word COOL in the grid below? You can start on any letter, then on each step you can step one letter in any direction (up, down, left, right, or diagonal). You cannot visit the same letter twice. C C C C C L O O O L L O O

12. Vectors

Three forces of 5N, 8N, and 10N act from the same corner of a rectangular solid along its three edges. a) Calculate the magnitude of the equilibrant of these three forces. b) Determine the angle that the equilibrant makes with each of the three forces.

13. Physics/electricity

Eighteen-gauge wire has a diameter of 1.024 mm. Calculate the resistance of 19 m of 18 gauge lead wire at 20°C.

14. Chemistry

Identification of an unknown powdered metal by reaction with HCl: Why does the pH of the HCl solution initially increase very slowly when an unknown metal is first added to the acid solution, but gradually increase at a faster rate as the reaction proceeds

15. Geography (Ms. Sue)

1). Where are most of the region's (Russia and the Republics) smaller republics located? A: ? 2). What was the largest republic in the Soviet Union? What is the largest republic in the region today? A: ? 3). To which of the Soviet Union Socialist Republics

16. college physics

The charge per unit length on a long, straight filament is -87.0 µC/m. (a) Find the electric field 10.0 cm from the filament. Distances are measured perpendicular to the length of the filament. (Take radially inward toward the filament as the positive

17. Chemistry

What is the purpose of adding distilled water to an HCl solution?

18. Psychology

Please check my answers... 1. Asthma is associated with environmental conditions. True 2. Only one-half of U.S. children with asthma follow their doctor's advice about medication. False 3. The percentage of overweight children has increased only marginally

19. math

arman has 1160 annual income from bonds bearing 3% and 5 % interest. then he added 25% more of the 3% bonds and 40% more of the 5 %bonds, threby increasing his annual income by 410. find his initial investment in each type of bond

20. american history

. Which of the following was the primary cause of the Balkan Wars conducted during the Clinton administration? A. The rise to power of Slobodan Milosevic in Serbia B. Muslim activism in Bosnia C. The UN peacekeepers' inability to stem ethnic cleansing D.

21. Physics

Two 2.9-cm-diameter electrodes with a 0.15-mm-thick sheet of Teflon between them are attached to a 9.0 V battery. Without disconnecting the battery, the Teflon is removed. a) What are the electric field after the Teflon is removed?

22. Chemistry

Ethanol (C2H5OH) is synthesized for industrial use by the following reaction, carried out at very high pressure. C2H4(g) + H2O(g) → C2H5OH(l) What is the maximum amount, in kg, of ethanol that can be produced when 1.65 kg of ethylene (C2H4) and 0.0610 kg

23. Chem

An analysis of generic antacid tablets labeled to contain 250mg of CaCO3 (MM= 100.09g/mol) per tablet of active ingredient was performed. The analysis was performed by dissolving a 0.550g sample of the antacid tablet in 75.00mL of 0.1055M HCl. The excess

24. MATH - URGENT!!!

There are 5 boys and 4 girls in my class. In how many ways can they be seated in a row of 9 chairs such that at least 3 girls are all next to each other?

25. physical science

A 12-kg iron ball is dropped onto a pavement from a height of 90m. Suppose half of the heat generated goes into warming the ball. What is the temperature increase of the ball in degree C

26. Physics

An unmarked police car traveling a constant 80km/h is passed by a speeder traveling 135km/h. Precisely 3.00s after the speeder passes, the police officer steps on the accelerator; if the police car's acceleration is 1.50m/s^2 , how much time passes before

27. math

A tray contains 11 chocolate chip cookies and 15 oatmeal raisin cookies. How many ways can a child select 4 cookies that include at least 1 chocolate chip cookie?

28. math prob

Twelve people attend the first meeting of the Star Wars Club. They exchange e-mail addresses. How many exchanges take place?

29. intermediate algebra

a motorboat moves 25 miles per hour in still water. it travels 21 miles upstream and 21 miles downstream in a total time of 2.0 hours. whatis the speed of the current?

30. chemistry

Manganese(III) fluoride, MnF3, can be prepared by the following reaction: 2MnI2(s) + 13F2(g) → 2MnF3(s) + 4IF5(l) If the percentage yield of MnF3 is always approximately 51%, how many grams of MnF3 can be expected if 40.0 grams of each reactant is used

31. Calculus help, please!

1. Evaluate: lim x->infinity(x^4-7x+9)/(4+5x+x^3) 0 1/4 1 4 The limit does not exist. 2. Evaluate: lim x->infinity (2^x+x^3)/(x^2+3^x) 0 1 3/2 2/3 The limit does not exist. 3. lim x->0 (x^3-7x+9)/(4^x+x^3) 0 1/4 1 9 The limit does not exist. 4.For the

32. Chem

An 80.0-gram sample of a gas was heated from 25 °C to 225 °C. During this process, 346 J of work was done by the system and its internal energy increased by 6635 J. What is the specific heat of the gas?

33. sociology

what are three challenges involved with ensuring that teachers strategies are appropriate for culturally diverse children

34. science

What fraction of piperazine (perhydro-1,4-diazine) is in each of its three forms (H2A, HA–, A2–) at pH 8.67? The acid dissociation constant values for piperazine are Ka1 = 4.65×10–6 and Ka2 = 1.86×10–10.

35. math prob

A committee of 5 people is selected from a group of 7 men and 9 women. In how many ways can the committee be selected so it contains at least 1 woman?

36. Jiskha

I typed several questions and answers regarding the subject of Geography, and suddenly, as I was waiting for a reply from Ms. Sue, it seemed as though my questions were deleted from the webpage where all of the other questions are posted. I do not know

37. algebra

The speed of a moving sidewalk at an airport is 2ft/sec. A person can walk 93ft forward on the moving sidewalk in the same time it takes to walk 12ft on a non moving sidewalk in the oppsite direction. At what rate would a person walk on a nonmoving

38. history

2. William Lloyd Garrison’s The Liberator was known for appealing to its readers’ sense of (1 point) A. moral correctness. B. modern convenience. C. economic concern. D. social status. a

39. Physics/electricity

In the Bohr model of the hydrogen atom, an electron in the 2nd excited state moves at a speed of 5.48X10^5 m/s in a circular path having a radius of 2.12X10^-10 m. What is the effective current associated with this orbiting electron?

40. math

An internet company charges $30 a month. There is also a$30 installation fee. Is the number of months you can have internet proportional to the total cost?

41. math

The reading list for a literature class has 7 fiction and 9 nonfiction books. A student is to write a report on 5 books from the list during the semester. The reports must include at least 1 and at most 4 reports of fiction books. In how many ways can the

42. Math: Pre-calculus

A rancher wants to build a rectangular pen with an area of 180 . Let W be the width of the pen and L be the length of the pen. a) Find an equation for the perimeter P in terms of W and L . b) Use the given area to write an equation that relates W and L .

43. Math

A sociology seminar has 7 members (a) They begin each meeting with each member shaking hands with all the other members. No one shakes another member's hand twice. How many handshakes take place? (b)The professor shakes hands with each member of the

44. PHYSICS

A large, flat, horizontal sheet of charge has a charge per unit area of 2.05 µC/m2. Find the electric field just above the middle of the sheet.

45. Chemistry

If 5.300 g of C6H6 is burned and the heat produced from the burning is added to 5691 g of water at 21 °C, what is the final temperature of the water? 2C6H6(l) +15O2 (g)----> 12CO2(g)+6H2O(l) +6542

46. Math

If a 60 kg man is riding a Monarch ergometer at 50 rpm and the resistance is 2.0 kg, what is the power output?

47. college physics

The charge per unit length on a long, straight filament is -87.0 µC/m. (a) Find the electric field 10.0 cm from the filament. Distances are measured perpendicular to the length of the filament. (Take radially inward toward the filament as the positive

48. algebra

What did the baby buzzard say when it say an orage in the nest

49. more news

What is the Watergate scandal and why could this story not have happened in 2012? I know what the watergate scandal is, it was the political scandal that led to Nixons resignation where burglars who broke into the Democratic party headquarters had ties to

50. physics

a projectile launched speed of 31.1m/s at angle 71.2 degrees above horizontal fill in table time 0 vx m/s 10.0m/s vy 29.4m/s ax? ay?

51. Geography (Ms. Sue)

1). How has Siberia's climate affected transportation in the region? A: Siberia's climate has affected transportation as it made travel through the region was slow and dangerous. 2). What impact did the Trans-Siberian Railway have on Russia's population?

52. chemistry

If 4.0L of a 4.7M SrCl2 solution is diluted to 45L , what is the molarity of the diluted solution?

53. Chemistry

How many years will it take for 88g tritium to decay to an 11g sample?

54. Physics

A stone is thrown up vertically from the ground (the gravitational acceleration is g = 10 m/s^2 ). After a time dt =1 s, a second stone is thrown up vertically. The first stone has an initial speed v1 = 11.0 m/s, and the second stone v2 = 16.0 m/s. (a) At

55. Chemistry

In the space below, show your work for determining the volume, mass, and moles of baking soda Moles of baking soda reacted Mass of baking soda reacted (g) Volume of baking soda reacted 140 ml of vinegar 5 tsps of baking soda were used

56. Chemistry

The tripeptide is T-A-K 1. What is the overall charge of the tripeptide below pH 1.0? 2. What is the overall charge of the tripeptide at pH 12? 3. What type of intermolecular attractions could the side chains of the amino acids make with the solvent

57. Chem

An 80.0-gram sample of a gas was heated from 25 °C to 225 °C. During this process, 346 J of work was done by the system and its internal energy increased by 6635 J. What is the specific heat of the gas?

58. physics

The drawing shows an exaggerated view of a rifle that has been "sighted in" for a 91.4-meter target. If the muzzle speed of the bullet is vo=427m/s, what are the two possible angles between the rifle barrel and the horizontal such that the bullet will hit

59. Chemistry

ZN(s) + 2H+(aq) produces ZN2+(aq) +H2(g) A sample of Zinc is placed in the ice calorimeter. if 0.0657g of Zinc causes a decrease of 0.109ML in the ice/water volume of the calorimeter, what is the enthalpy change, per mole of Zinc, for the above reaction

60. Geography (Ms. Sue)

Which has the higher population density: The United States or Russia and the Republic? Why? A: I believe the United States has the higher population density because ?

61. Vectors

A ship is being pulled by two tugboats. The smaller tugboat is 13 degrees off the port bow and the larger tugboat is 20 degrees off the starboard bow. The larger one pulls twice as hard as the smaller tugboat. In what direction will the ship move?

62. chemistry

Suppose 13.8 g Na and 21.6 g of water are mixed. What is the theoretical yield in grams of hydrogen from this mixture. what is the % yield if 0.500 g of H2 is formed

63. science

You prepare a buffer solution from 10.0 mL of 0.100 M MOPS (3-morpholinopropane-1-sulfonic acid) and 10.0 mL of 0.079 M NaOH. Next, you add 1.00 mL of 7.15 × 10-6 M lidocaine to this mixture Denoting lidocaine as L, calculate the fraction of lidocaine

64. physics

A ball is thrown at 19 m/s at 41° above the horizontal. Someone located 30 m away along the line3 of the path starts to run just as the ball is thrown. How fast, and in which direction, must the catcher run to catch the ball at the level from which it was

65. Finance

You were hired as a consultant to ABC Company, whose target capital structure is 40% debt, 15% preferred, and 45% common equity. The before-tax cost of debt is 8.00%, the cost of preferred is 7.50%, and the cost of common is 12.75%. What is its WACC if the

68. algebra

------Suppose someone opens the valve on a large water tank so that water drains out. Choose a starting volume of water in the tank (from 100 to 500 gallons), and choose how much water drains out each day (from 2 to 5 gallons). Write the equation that

69. Physics

A fireworks rocket is moving at a speed of 48.4 m/s. The rocket suddenly breaks into two pieces of equal mass, which fly off with velocities v1 and v2, as shown in the drawing. What is the magnitude of (a) v1 and (b) v2? In the image the two pieces are

70. math

1. What is the greatest common factor of: 2x2x5x7x7 2x5x5x7x7 a. 2x5 b. 2x5x7 c. 2x5x7x7 d. 2x2x5x5x7x7 e. 2x2x2x5x5x5x7x7x7x7 2. What is the least common multiple of: 3x3x5x5x5x7 2x3x5x5x7x7 a. 2 b. 5x5x7 c. 3x3x5x5x5x7 d. 2x3x3x5x5x5x7x7 e.

71. intro to chem

a 155.0 g piece of copper is dropped into a 250.0 g of water at 28.8 C, what is the final temp of the mixture?

72. Mathematics

If a 75 kg person pedals a Monarch leg ergometer at 50 rpm, how much resistance is needed to work at a level of 11 METs?

73. English

1. He is sitting down in a chair and playing drums. 2. He is sitting in a chair and playing drums. 3. He is sitting down on a chair and playing drums. 4. He is sitting on a chair and playing drums. (Which ones are grammatical? Do we have to use 'down' or

74. Algebra 1

a triangle has an area of 20 inches squared. every dimension of the triangle is multiplied by a scale factor, and the new triangle has an area of 180 inches squared. what was the scale factor?

75. Math

Who is working harder, Fred running a 10 min mile pace at a 10% grade or Pete who is 55 kg, cycling on a Monarch ergometer with a resistance of 2.5 kg and a pedal rate of 60 rpm?

76. Biochemistry

You are performing site-directed mutagenesis to test predictions about which residues are essential for a protein's function. Which of each pair of amino acid substitutions listed below would you expect to disrupt protein function the most? A. Val replaced

77. chemistry

Mr. Arswan iss preparing a mixture for a science experiment. He measures 10.5 grams of wood shavings, 150 grams of iron filings, and 18.50 grams of salt. What is the total mass of Mr. Arswan`s mixture? A 30.5 grams B 179 grams C 150.5 grams D 17.9 grams

78. physics

A ball is thrown at 19 m/s at 41° above the horizontal. Someone located 30 m away along the line3 of the path starts to run just as the ball is thrown. How fast, and in which direction, must the catcher run to catch the ball at the level from which it was

79. Government

Journalist Walter Lippmann suggested that Question 18 options: 1) polling, even when done scientifically, cannot be trusted because it is in people’s nature to be dishonest in response to political questions. 2) the dominance of polling has brought about

150. Physics

The time at which it took the arrow to reach the bulls eye is .6 seconds and it will land 1.8m under the bullseye

151. bus 101

Team diversity is often established in a team,by bringing together the expertise of members from various functions in the organization. A.problem-solving B.working C.cross-functional D.self-managed I need help with this ? THX

152. physics

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See

asked by HELP(ANS PLS!!!!!!!!)
153. physics/algebra

A 74.0kN kN spaceship comes in for a vertical landing. From an initial speed of 1.00 km/s {\rm km/s}, it comes to rest in 2.40min min with uniform acceleration. What braking force must its rockets provide? Ignore air resistance.

154. Math

A patient must exercise a MET level of 8. What grade is needed if the speed is 3 mph?

155. Math

What is the MET level of a person that is running on a level treadmill at 6 mph?

156. Maths

Consider the line passing through two points P=(1,8) and Q=(−1,3). If the line also passes through point R=(15,a), what is the value of a?

157. Language Arts

if you say, "The book is on top of the big slide." would "on top of" be a compound preposition or is on and of two different prepositions? Thanks...

158. williams pkwy

how much money must be deposited now @ 6 % interest compounded semi annually to yield an annuity payment of \$ 4000 at the end of each six month period for a total of five years

159. Science

When investigate if chlorophyll is necessary for photosynthesis why is the leaf rinse with tap water?

160. Math Calculator Question

How would I plug the following formula in a TI-30X calculator: P(5)= (10 C 5)(0.20^5)[0.80^(10-5)] When I try to do it, I get 0.000104858, but that is not the correct answer.

161. Math

Sue's bike has whheels that are 60cm in diameter. 1.1 How far does the bike move in one full turn of the wheel?

162. Precalculus

Find the discriminant of 3x^2-2x+2=0 and then solve by whichever method seems easiest

asked by Anna bosco
163. Maths

If a line with x-intercept −5 and y-intercept 35 passes through point P=(5,a) , what is the value of a ?

How is Sirius XM radio different than AM/FM.. I know AM is radio transmissions created by changing the power of the carrier wave, and FM are transmissions created by changing the speed at which radio waves are generated.

165. italian

write a sentence using the expression "avere mal di"

166. Geography (Ms. Sue)

What is the textbook asking of me when the question is, "What is the current time in the time zone in which you live"?

167. chemistry

Volume (mL) of 2.15 M potassium hydroxide that contains 8.09 g of solute WebAssign will check your answer for the correct number of significant figures. mL

168. english

Although she never actually said it, mom (blank) that we were going to get a pet. a=refuted b=implied c=substantiated d=inferred answer is b

169. Geography (Ms. Sue)

If it is 6:00 Sunday morning in New York,what are the day and time in Auckland, New Zealand?

170. maths

(3x + 4) + (5y -1) = 10 - 16i A. x = 2, y = -3 B. x = 1, y = -2 C. x = 3, y = 2 D. x = -3, y = 1 think the answer is C

171. Physics

If a car is going .197 meters per second, how long will it take to go 5 kilometers (assuming the ground is perfectly flat).

172. Economic's,tourism,geography,pure math's

What can i study when i finnish school i am doing grade 10

asked by Pritty khumalo
173. Politics

What is the history of the formation of Democratic Socialism? Can you please provide links?

174. Find the value of K (Polynomial)

Dtermine the value of K such that -2 is cone root of the equation 2x^3+(K+1)x^2=4-x^2 I tried it a couple of times and I keep getting the wrong answer. The answer is K=3.

175. News

what's the biggest challenge to newpapers today? would it be the internet?

176. math

A quadrant has an area of 175m2. Find the length of its base

177. math

what is the answer in 5 x 1.1/2

178. physics(*URGENT*)

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See

179. Math

A 50 kg individual needs to work at a MET level of 6 to reach her target heart rate. If the treadmill speed is set at 3.5 mph, what grade is needed? If she exercise for 30 minutes at this intensity, how many kcal will she expend.

180. Maths

Given that −24

181. math

5.1=-4.4.4.4.1 -- - - -------= 5 4 5.5.5.5.5 simplify by multiplying. what is the final answere.

182. Physics -URGENT-

A 55 kg boy and a 37 kg girl use an elastic rope while engaged in a tug-of-war on a frictionless icy surface. If the acceleration of the girl toward the boy is 2.4 m/s^2, determine the magnitude of the acceleration of the boy toward the girl in m/s^2

183. math

How to graph the following problems on a graph. 1. y= 2x+5 2. 2x+ 3y= 8 3. y= 3x-5 4. 4y= 2x-9

184. Geography (Ms. Sue)

In what ways are Eastern Europe and Northern Europe different? I know you have already told me of what to consider and ponder about, but I am truly struggling with this question. Is there, perhaps, a link you could provide for me?

185. Materials Science & Physics

Consider a tetragonal phase of which the lattice parameters satisfy c = 2a. Diffusivities of the phase were measured in two different directions as: 6.0x10-12 cm2/sec along  and 8.0x10-12 cm2/sec along . (a) Determine the diffusivity tensor (Dij)

186. Computers

Hi, Am I on the right track? Reading for an hour now..and wanted to check my answers.. Which modem uses the same medium used to transmit video signals" My answer: C. Cable ADSL BRI DiGITAL '2. Which is the fastest wireless standard? My answer: 802.11G