# Questions Asked onOctober 7, 2013

1. ## physics mechanical energy

A skateboarder with mass ms = 42 kg is standing at the top of a ramp which is hy = 3.7 m above the ground. The skateboarder then jumps on his skateboard and descends down the ramp. His speed at the bottom of the ramp is vf = 6.3 m/s. Write an expression

2. ## poetry (Pioneer by Dorothy Livesay)

I have to answer the questions according to this poem, I have answered them but just want someone to look over them to see if they are right. The last one I had trouble with and need help on that one too. The answer that I think it is I have put arrows on

3. ## chemistry

Why were we instructed to add distilled water to a metal nitrate solution? What purpose does the water serve in the experiment? Just to add volume so the probe can reach the solution?

4. ## physics mechanical energy and power

A car m = 1850 kg is traveling at a constant speed of v = 30 m/s. The car experiences a force of drag (air resistance) of Fd = 300 N. Write an expression for the power the car must produce Pi to maintain its speed. Part (b) What is the power in HP? No

5. ## Physics

A spring with 50 N/m hangs vertically next to a ruler. The end of the spring is next to the 21-cm mark on the ruler.If a 2.5-kg mass is now attached to the end of the spring, where will the end of the spring line up with the ruler marks?

6. ## Math help

Eric and Mark went to a ball game and visited the concession stand. They each got a hot dog, and mark got a large soda and a bag of peanuts. Eric had a coupon for 3$off the cost. Mark Paid for the rest, which came to 11.50. Peanuts cost 4$, and a hotdog

7. ## poetry

The poem is: Canada Day Love Match My mother stalked her future son in law, convinced he was the one for me. Through the crowd at the Forks Market, she kept behind him like a cat ready to pounce. I kept out of his line of sight. Blind to us, he watched

8. ## Math

A speaker has a collection of 62 jokes. He uses 3 jokes in each speech. Please help i got a is 37820 but really need help with part b (a) In how many ways can he select 3 jokes for a speech? How many speeches can he give without using a joke twice? (Round

9. ## Science

A 1.0-kilogram book rests on a horizontal tabletop. The magnitude of the force of the tabletop on the book is

10. ## chemistry

ethane,C2H6 burns in oxygen. A. what are the products of the reaction? B. write the balanced equation for the reaction. C. what mass of O2, in grams is required for complete combustion of 13.6 of ethane? D. what is the total mass of products expected from

11. ## English 11

Match the letter of the author with his or her description. Not all letters will be used. A.William Bradford B.Captain John Smith C.Anne Bradstreet D.Olaudah Equiano E.Thomas Paine F.Thomas Jefferson 1.I wrote an account of my voyage cross on the Mayflower

12. ## Chemistry

C2H6(g) + O2(g) CO2(g) + H2O(g) (a) Consider the unbalanced equation above. What is the maximum mass of CO2 that can be produced when 21.0 g of C2H6 and 38.5 g O2 react? (b) If 24.7 g of carbon dioxide is actually produced by the reaction in part (a), what

13. ## Physics

A 55-kg soccer player jumps vertically upwards and heads the 0.45-kg ball as it is descending vertically with a speed of 30 m/s. (a) If the player was moving upward with a speed of 4.0 m/s just before impact, what will be the speed of the ball immediately

14. ## physics

Car traveling on circular track. Point A is at positive x,y. Point B is at positive x, negative y. A car is traveling around a horizontal circular track with radius r = 220 m as shown. It takes the car t = 51 s to go around the track once. The angle èA =

15. ## spanish

Ayer mis amigos Esteban, Ana, Olivia y yo fuimos al cine a ver la nueva película de Javier Bardem. A mí me (1) ____ la película porque Javier es uno de mis actores favoritos. Pero a (2)____ le (3)______ ; él empezó a dormirse al final. A Ana y

16. ## Algebra1 Math

A moving company charges $800 plus$16 per hour. Another moving company charges $720 plus$21 per hour. How long is job that costs the same no matter which company is used?

17. ## CHEMISTRY

Silver reacts with nitric acid to form nitrogen monoxide, silver nitrate and water. Calculate the volume of nitrogen monoxide gas (@STP) that can be produced from the reaction of 5.00g of silver?

18. ## Econ

Shep goes to his favorite coffee shop every morning and always buys one large latte, no matter whether there is a special or not (e.g. half price Mondays). What is his price elasticity of demand for lattes?

19. ## Chemistry

Calculate the molarity of a solution made by adding 28.2 mL of concentrated ammonia (28.0 % by mass, density 0.880 g/mL) to some water in a volumetric flask, then adding water to the mark to make exactly 500 mL of solution. (It is important to add

Any short explanation for things I got wrong would be great, too, if possible! Thanks in advanced! :) 8. Which of the following functions grows the fastest? ***b(t)=t^4-3t+9 f(t)=2^t-t^3 h(t)=5^t+t^5 c(t)=sqrt(t^2-5t) d(t)=(1.1)^t 9. Which of the following

21. ## Gen Chm II

Determine the pressure-based Keq for the reaction: 2SO2(g) + O2(g)2SO3(g) given that 1.00×10−2 moles of SO2 and 2.00×10−2 moles of O2 were initially placed in a 2.00 L reaction chamber. The chamber contained 7.5×10−3 moles of SO3 when equilibrium

22. ## ALGEBRA 1

You practice playing your guitar every day. You spend 15 minutes practicing chords and the rest of the time practicing a new song. So the total number of minutes y you practice for the week is given by y=7(15+x), where x is the number of minutes you spend

23. ## Math

A man on the 8th floor of a building sees a bucket (dropped by a window washer) pass his window and notes that it hits the ground 1.5s later. Assuming a floor is 12ft high (and neglecting air friction), from which floor was the bucket dropped?

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

25. ## physics

A block of mass m is initially at rest at the top of an inclined plane with a height = 4.4 m which makes and angle of θ = 17 degrees with respect to the horizontal. It is observed to be traveling at v = 0.2 m/s a distance d after the end of the inclined

26. ## physics

A small fish is dropped by a pelican that is rising steadily at 0.60 m/s. After 2.8 s, what is the velocity of the fish? The acceleration of gravity is 9.81 m/s2. How far below the pelican is the fish after the 2.8 s?

27. ## geometry

Jk=6r,kl=3r and jl = 27

32. ## Math-Algebra

What is the measure of the side of a cube if the volume is 27000cm^3?

33. ## Math

A 120 lb. person would weigh about 20 lb. on the moon. A 150 lb. person would weigh 28 lb. on a lo, a moon of Jupiter. Use ratio tables to determine which moon would make a person weigh the most.

34. ## physics

A glass plate whose index of refraction is 1.47 is immersed in a liquid. The surface of the glass is inclined at an angle of 53.0° with the vertical. A horizontal ray in the glass is incident on the interface. When the liquid is a certain alcohol, the

35. ## Chemistry

Al(s) + HCl(aq) AlCl3(aq) + H2(g) Zn(s) + HCl(aq) ZnCl2(aq) + H2(g) Consider the unbalanced equations above. A 0.200 g sample of a mixture of aluminum and zinc metal is reacted with an excess of hydrochloric acid. Both metals react with hydrochloric acid.

36. ## English

Is this grammatically correct: In October, 1347, after decades of trading the most luxurious goods, trading ships sailed into the port of Messina, Sicily, carrying a terrifying cargo--the disease now known as the bubonic plague, the infamous plague in

37. ## writing

As German writer Goethe said, people would be better off if they realized that "as soon as you trust yourself, you will know how to live."

38. ## estraellamountaincommunity college

an American football field is a rectangle with a perimeter of 1040 feet the Lenght is 200 feet more than the width find the demensionof the field

Carol Miller went to Europe and forgot to pay her $740 mortgage payment on her New Hampshire ski house. For her 59 days overdue on her payment, the bank charged her a penalty of$15. What was the rate of interest charged by the bank?

40. ## Math

Carla and Candice left from the same place at the same time and rode their bikes in the same direction along a straight road . Candice biked at an average speed that was three-quarters of Carla's average speed. After 2 hours they were 28 miles apart. What

41. ## Chemistry

If 89J of heat are added to a pure gold coin with a mass of 20g , what is its temperature change? Specific heat capacity of gold is 0.128 J/g∘C.

42. ## Macolm X

2011–2012 seasons, Patrice Bergeron entered a game against the Ottawa Senators with a plus/minus rating of +20. In the game, which Boston won 4–3; Bergeron was on the ice for one of his team's qualifying goals as well as all three qualifying goals by

43. ## Geography (Ms. Sue)

1). As a train moves eastward after passing over the Ural mountains, what is the first major stop? A: ? 2). What railroad would you take if you wanted to pass north of Lake Baikal? A: You would take the Baikal-Amur Mainline?

44. ## chemistry

An aqueous solution of glucose is made by disolving 8.75 g of glucose in 100 mL of water. Calculate molarity, molality and the mole fraction

45. ## Math

a picture 8 in. by 12 in. is placed in a frame which has a uniform width. if the area of the frame is equal to the area of the picture, find the dimension of the frame (if you would,just give me the formula and i'll take it from there) thank you

46. ## English

1. I got up late and missed the bus which I had to take in the morning. I was late for school and my teacher got mad at me when I entered my classroom. I had to remain in the classroom to clean it by myself. 2. I got up late and missed the bus number 6

47. ## Algebra 1

A square pyramid has a volume of 560 in to the third power, a base length of 10 in., and a height of 14 in. What is its base width? My textbook states that the formula v = 1/3lwh relates the volume of a square pyramid to its base length l, width w, and

48. ## chemistry

The use of the British thermal unit (Btu {\rm Btu}) is common in much engineering work. (1 Btu {\rm Btu} = 1054J {\rm J}) A Btu {\rm Btu} is the amount of heat required to raise the temperature of 1 lb {\rm lb} of water by 1 ∘ F ^\circ {\rm F}. How many

49. ## Chemistry

For the following chemical reaction, what mass of silver nitrate in grams will be needed to produce 3.91 mol of calcium nitrate? CaI2+2AgNO3=2AgI+Ca(NO3)2

50. ## Math

a gym charges an intitL $100 membership fee and$60 each month. Write an equation that represent the total cost, C, for belonging to the club for M months

51. ## psychology

the most important aspects of classical conditioning is that the conditioned stimulus becomes a _______ for the unconditional stimulus: a signal b stimulus generalization c stimulus discrimination d high-color conditioning support

52. ## Chemistry

In the following reaction, 451.4 g of lead reacts with excess oxygen forming 313.6 g of lead(II) oxide. Calculate the percent yield of the reaction. 2Pb(s)+O2(g)= 2PbO(s)

53. ## Algebra 1

1). The absolute value of 2x + 4 = 0 A: -2 2). A volunteer at the zoo is responsible for feeding the animals in 15 exhibits in the reptile house. This represents 20% of the total exhibits in the reptile house. How many many exhibits are in the reptile

54. ## Chemistry

FeCl3(aq) + K2S(aq) Fe2S3(aq) + KCl(aq) Consider the unbalanced equation above. What is the maximum mass of Fe2S3 that can be produced when 54.5 mL of 0.480 M FeCl3 and 98.5 mL of 0.420 M K2S react?

55. ## Practical English

This is my second time taking this exam this is the last one so I can graduate here is what I think the answers are. If you see any mistakes please help. 1. Choose the sentence in which the verb is a linking verb. A. He works at a gas station. B. His boss

56. ## Pre-Calculus

From the top of a 300-ft lighthouse, the angle of depression to a ship in the ocean is 28°. How far is the ship from the base of the lighthouse? (Round your answer to the nearest foot.)

57. ## English

Select the part of speech that correctly identifies the italicized word in each sentence below. The movie was wonderful, YET it was not nearly as detailed and creative as the novel. a. preposition b. conjunction* c. adjective d. interjection INDEED, it has

58. ## physics

Which of the following statements is FALSE regarding the ‘Drift’ of charge carriers? It is the dominant carrier transport mechanism when an electric field is applied in the semiconductor. Holes move in the direction opposite to that of the applied

59. ## physics

An astronaut wearing a 20-kg spacesuit jumps on the moon with an initial velocity of 16 m/s. On the moon, the acceleration due to gravity is 1.62 m/s squared. What is the maximum height he reaches?

60. ## math-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

61. ## History

How did Byzantines preserve the traditions of the Romans? could you list few for me??

62. ## physics

A stone is dropped off a cliff, the last 1.5 seconds before it reaches the ground it travels 30 meters. Find the height from which it dropped & final velocity

63. ## Geography (Ms. Sue)

Find the border between France and Germany. Which French and German cities might make good international trading partners?

64. ## statistics

To see whether people are keeping their car tires inflated to the correct level of 35 pounds per square inch (psi), a tire company manager selects a sample of 36 tires and checks the pressure. The mean of the sample is 33.5 psi, and the population standard

65. ## CHEMISTRY

A 44.1 L sample of nitrogen gas at a pressure of 88.3 kPa is placed into a container of equal volume that already holds hydrogen gas at a pressure of 125.6 kPa. ! What is the partial pressure of the nitrogen in the new container? ! What is the total

66. ## physics

An astronaut wearing a 20-kg spacesuit jumps on the moon with an initial velocity of 16 m/s. On the moon, the acceleration due to gravity is 1.62 m/s squared. What is the maximum height he reaches?

67. ## Geography (Ms. Sue)

In 1949, near what country were the Communist nations of Europe located?

68. ## chemistry

When 5 grams of salt is dissolved in 95 grams of water the temperature of the solution increases 10°C how much heat is evolved the heat capacity of the solution is 1.1 cal/g°C

6 1/2-7/8 / 5 11/16 evaluate the expresson

70. ## statisics

Suppose 4 news anchors are randomly selected. Assume the appropriate requirements are met. If the chances of reporters working for one news anchor is 0.60, find the probability it works for three of them.

71. ## To "bob"

Please don't ever post whole lists (tests? Homework?) of questions and answer choices here again. We do not take tests or do complete homework assignments for students. =(

72. ## Physics

I need help really bad anyone good at this???? Name three different kinds of graphs that are often used to plot information and discuss the value of each.

Television is an attractive advertisnig medium because it A.offers a rapidly growing network audience. B.is relatively inexpensive. C.provides instant feedback which can be used to measure effectiveness. D.offers mass coverage and flexibility. I think is D

80. ## Science/ bio HELP PLEASE!!!!!!!

Pick the correct answer to the following question. Write a brief statement explaining why each choice of answers is correct or incorrect. A person is hyperventilating. Their rapid rate of breathing causes a loss of carbon dioxide than usual from the body,

81. ## Life ScienceS

Essay adaptations of predator and prey and effect of predation population growth

82. ## history

what is the purpose of the preamble?

83. ## IR chemistry - instrumental anaylsis

my last instrumental analysis lab was basically about becoming familiar with using an IR spectrometer. I used a salt solution with a sodium chloride salt plate although it was not stated in the procedure to do so. the IR spectra seems to have come out fine

84. ## Physics

The coefficient of static friction between the 2.90 kg crate and the 35.0° incline of Figure P4.41 is 0.260. What minimum force F must be applied to the crate perpendicular to the incline to prevent the crate from sliding down the incline?

85. ## math

Deepak is 10 years old, and his brother is 7 years old. In how many years time will their total age be 41.

86. ## math

The position vectors of points A and B with respect to the origin 0, are (-8,5) and (12,-5) respectively. Point M is the midpoint of B and N is the midpoint of OA. (a) Find: (i) The coordinates of N and M (ii) The magnitude of NM (b) Express vector NM in

87. ## Algebra 1 (Reiny)

1). A square pyramid has a volume of 560 in to the third power, a base length of 10 in., and a height of 14 in. What is its base width? 2). h + p = 3(k-8)

88. ## maths

SOLVE (x^2 – x)2 – 14(x^2 – x) + 24 = 0 A. 3, 1, -2, -4 B. 1, -3, -4, 2 C. -3, -1, 2, 4 D. -2, 3, -4, 1

89. ## algebra 1

Guitar Practice You practice playing your guitar every day. You spend 15 minutes practicing chords and the rest of the time practicing a new song. So the total number of minutes y you practice for the week is given by y 5 7(15 1 x), where x is the number

90. ## Math Middle

I used my gas tank and used 7/16 of gas. Then I used another 1/3 of the remaining gas what fraction of the tank is filled with gasoline. My Answer is 7/8 of the tank is filled.

91. ## math homework

A37 foot long Submarine sanwich is cut in to three piece.the shortest piece is x feet long.the second piece is twice as long as the shortest piece.the longer piece is 2 feet longer than four time the length of the shortest piece.find the length of all

92. ## English

1. A few minutes later, the dog started to have a stomachache and we had to take him to the hospital. 2. A few minutes later, the dog started to groan lying on the floor, so we had to take him to the hospital. 3. A few minutes later, the dog began to make

93. ## Finance

Assume that Pelon Inc. has issued a 10 year maturity bond with a yield of 8%. Its coupon rate is 5% and the coupons are paid semi annually. Its par value is the value of this bond at the issue date?

94. ## physics

where must a 1200n weight be hung on a uniform, 200N pole so that a boy at one end supports one-third as much as a man at the other end?

95. ## Health

How can you determine (approximately) a serving size if you do not have a nutrition label to read?

96. ## 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, thereby increasing his annual income by 410. find his initial investment in each type of bond (if you would,just give

97. ## Math

A baseball pitcher has pitched a total of 25 innings so far during the season and has allowed 18 runs. At this rate, how many runs, to the nearest hundredth, would he allow in nine innings? This number is called the pitcher’s earned run average, or ERA.

98. ## math Too Hard!

to determine the size pf a parks moose population, caturalists catch 72 moose, tag them, and then set them free. months later 65 moose are caught, of which 15 have tags. Estimate the size of the moose population.

99. ## Geography

I need a map of South America countries that shows their mineral deposits in details. Can someone please give me a website?

100. ## Physics

Help plz!!! Where are all the helpers??!! ahhhhhhh :p Explain what chart junk is and how it differs from the kind of items you should include in your graphs. Provide four examples.

101. ## Geography

Does anyone know a good website that shows South American countries natural resources in detail?

102. ## Math

THC, the active ingredient in marijuana, is said to have a half-life of about one day. If someone ingests 3 grams of THC, write an equation to represent M, the amount of marijuana in his system when he tested d days later.

103. ## math

how much money do I need to deposit today to end up with 13000.00 in 3 years with interest rate 6.5

104. ## Biology simple question

Why is wavelength data important in terms to spectrophotometer. TY SO MUCH!!!

116. ## math

The position vectors of points A and B with respect to the origin 0, are (-8,5) and (12,-5) respectively. Point M is the midpoint of B and N is the midpoint of OA. (a) Find: (i) The coordinates of N and M (ii) The magnitude of NM (b) Express vector NM in

117. ## History

What was the name of the people who settled Gaul that became modern France? Was is the romans??? or the celtics???

118. ## physics

You are riding in a boat whose speed relative to the water is 4.5 m/s. The boat points at an angle of 25.1¡ã upstream on a river flowing at 12.8 m/s. Find the time it takes for the boat to reach the opposite shore if the river is 26.2 m wide.

119. ## Algebra 1

Solve h + p = 3(k-8) for k.

120. ## Math

How would you use set builder notation to show that sine is discontinuous at every interval pi?

121. ## English

1. In three minutes, he started to shout. 2. After three minutes, he started to shout. (Which preposition should we use? Which one is right?) 3. Three minutes later, he started to shout. 4. Some minutes later, he started to shout. 5. After a short time, he

122. ## Biology

Caenorhabditis elegans hermaphrodites have six different homologous chromosome pairs: five pairs of autosomes (called I-V) and one pair of sex chromosomes (called X). Hermaphrodites can either self-fertilize or they can be fertilized by males (which only

123. ## Math

Han Song cycled 2 1/4 Km to the playground to meet his friend. Then, he cycled 1 2/5 km to the hawker centre to have lunch. What was the total distance Han song cycled?

124. ## math word problem

to determine the size pf a parks moose population, caturalists catch 72 moose, tag them, and then set them free. months later 65 moose are caught, of which 15 have tags. Estimate the size of the moose population.

125. ## Math

how many terms of the arithmetic sequence -5,-1,3,… must be added to reach the sum of 400

126. ## math

what is m4 (m to the 4th power)

127. ## physics

where must a 1200n weight be hung on a uniform, 200N pole so that a boy at one end supports one-third as much as a man at the other end?

128. ## Chemistry

Find the concentration of the polyprotic weak acid given the following: - 1 equiv needs 6 ml NaOH, 2 equiv needs 18 ml NaOH, 3 equiv needs 28 ml NaOH - pKa1 = 2, pKa2 = 3.9, pKa3, 10 - Molarity of NaOH = 0.175 - Total volume of NaOH = 28 ml - Volume of

129. ## physics

A ferryboat traveling at a speed of 30 km/h attempts to cross a river with a current of 5 km/h. What is the boat's speed relative to the shore?

130. ## poetry

Hi, I am analyzing a poem which is Sick Rose by William Blake. O Rose thou art sick. The invisible worm, That flies in the night In the howling storm: Has found out thy bed Of crimson joy: And his dark secret love Does thy life destroy. I need to know the

170. ## Physics

A spring has an unstretched length of 9.8 cm. The potential energy stored in the spring is V when the spring is streched to a length of 11.8 cm. What is the stretched length of the spring when its potential energy is 2.2 V? What compressed length will

171. ## LiFe Sciences..

1.explain how a species may display a herd or flock behavior as a survival strategy? 2.Name one other social behavior that animals may display as a survival strategy?

172. ## physics

A velodrome is built for use in the Olympics (see the figure below). The radius of curvature of the surface is 19.1 m. At what angle should the surface be banked for cyclists moving at 11 m/s? (Choose an angle so that no frictional force is needed to keep

173. ## dma040

Explain which terms are alike 7xy -9x^2 -15xy^2 -14xy

174. ## physics

meter stick is located at 50.5 cm and the stick is supported at 60 cm. where must a 190 gram load be hung in order to have equilibrium?

175. ## dma040

Solve for x. 13/14x + 8/7 = 6/7x

222. ## Trig

a child puts beads on one spoke of a bicycle wheel. the tire has a diameter of 2ft. if the child rides so that the tire makes one full rotation every 15 sec, and the beads begin in the horizontal outward position, find an equation that models the position

223. ## Math

Determine the range of each function a)f(x)=(x^2+3)^2,XER Answer is f(x)ER, f(x)>9 b)f(x)=1/3+x^4,XER Answer is f(x)ER, 0

224. ## Bio

How many chromatids per diploid nucleus (in a diploid somatic cell) will there be after Telophase of mitosis in C. elegans male cells?

225. ## Calculus

If f(x)= (1-cosx)/x and g(x)= 2/x on the interval (0,infinity), how would you identify all vertical asymptotes of f and g?

226. ## Physics

Imagine that if you drop an apple from a certain height, its final speed is 20 m/s when it reaches the ground. If you throw the apple vertically downward from the same height with an initial speed of 20 m/s, what will be its final speed? I tried

227. ## Chemistry

Balance the redox reaction: Ag(aq)+Cu(s)= Ag(s)+Cu(aq)

228. ## English

1. My sister and I took part in school marathon yesterday. 2. My sister and I took part in a school marathon yesterday. 3. My sister and I took part in the school marathon yesterday. 4. My sister and I took part in School Marathon yesterday. 5. My sister

229. ## English

1. He ran for class leader. 2. He ran for a class leader. 3, He ran for the class leader. (Which one is grammatical?)

230. ## science physics

arthur is riding a horse at a velocity of 4m/s. four seconds after, he is already traveling at a velocity of 12m/s. what is his acceleration

231. ## Math

Find the length of the arc (sector question) Radius=8cm Angle=27

232. ## English

1. I was lifting some weights at the gym last night. 2. I was lifting some weights in the gym last night. 3. We played dodgeball at the gym. 4. We played dodgeball in the gym. (Do we have to sue 'in' or 'at'? Which ones are grammatical?)

233. ## math

Round 9.46531 to nearest hundredth.

234. ## Character ed

What are some good ideas for a vision board ?