# shannon

Most popular questions and responses by shannon
1. ## Physics

A soccer ball kicked on a level field has an initial vertical velocity component of 15 meters per second. Assuming the ball lands at the same height from which it was kicked, what is the total time the ball is in the air? [Neglect friction.]

2. ## Physics

As a box is pushed 30 meters across a horizontal floor by a constant horizontal force of 25 newtons, the kinetic energy of the box increases by 300 joules. How much total internal energy is produced during this process?

3. ## Stat Help

A researcher wishes to be 95% confident that her estimate of the true proportion of individuals who travel overseas is within 4% if the true proportion. Find the sample necessary if in a prior study, a sample of 200 people showed that 40 traveled overseas

4. ## statiictis

DJ Jacqueline is making a playlist for an mp3 player; she is trying to decide what 12 12 songs to play and in what order they should be played. If she has her choices narrowed down to 21 blues, 13 reggae, and 25 hip-hop songs, and she wants to play an

5. ## Trigonometric Identities

Triangle ABC is given where angle A=33 degrees, a=15 in., and the height, h, is 9 in. How many distinct triangle can be made with the given measurements. Please explain your answer

6. ## Chemistry

Write the balanced net ionic equation for the following? a) Copper metal and zinc ion b) zinc and cupric ion c) Copper metal and hydrogen ion d) zinc metal and hydrogen ion e) iron metal and hydrogen ion f) Chlorine (Cl2) and bromide ion (Br-) g) Chlorine

7. ## Physics

Calculate the electric force between these two electrons. The value of the Coulomb constant 9 × 109 N · m2/C2 and the elemental charge is 1.6×10−19C. Answer in units of N (Newtons)

8. ## algebra

An archer releases an arrow from a shoulder height of 1.39 m. When the arrow hits the target 18 m away, it hits point A. When the target is removed, the arrow lands 45 m away. Find the maximum height of the arrow along its parabolic path. please help!!I

9. ## chemistry

Zn is less active than Mg. Write the equations describing what occurs when ou mix: a)Zn with 0.5M magnesium chloride, MgCl2 b)Mg with 0.5M ZnCl2

10. ## Physics HELP ASAP PLEASE

A hawk is flying horizontally at 10 m/s in a straight line 200m above the ground. A mouse it was carrying is released from its grasp. The hawk continues on its path at the same speed for two seconds before attempting to retrieve its prey. To accomplis the

11. ## Algebra

A community college campus plans to construct a rectangular parking lot on land bordered on one side by a highway. There are 640 feet of fencing available to fend the other three sides. Let x represent the length of each of the two parallel sides of

12. ## chemistry 110

what combinations of Zn, Al, ZnSO4 and Al2(SO4)3 would you make to illustrate that Zn is less active than Al?

13. ## University of North Texas

A manufacturer ships toasters in cartons of 25. In each carton, they estimate a 8% chance that one of the toasters will need to be sent back for minor repairs. In a batch of 12,000 toasters, what are the chances that fewer than 950 need to be returned?

14. ## 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?

15. ## Math

The weights of all one hundred (100) 9th graders at a school are measured, and it is found that the mean of all the measurements is 100 lbs., with a standard deviation of 15 lbs.   Explain how you would use this information to determine the percentage of

16. ## math

A rectangular photograph is mounted on a rectangular card. There is a border ofequal width around the photograph. The perimeter of the card is 40 centimeters longer than that of the photograph. Find the width of the border in centimeters.

17. ## chemistry

is the burning of a marshmallow a(n) endothermic or exothermic process?

18. ## College Chemistry

When one mole of C6H6 is burned, 3.27 MJ of heat is produced. When the heat from burning 5.43 g of C6H6 is added to 5.69 kg of water at 21.0°C, what is the final temperature of the water?

19. ## Statistics

Childhood participation in sports, cultural groups, and youth groups appears to be related to improved self-esteem for adolescents (McGee, Williams, Howden-Chapman, Martin, & Kawachi, 2006). In a representative study, a sample of n 5 100 adolescents with a

20. ## accounting

18. Balance sheet and income statement data indicate the following: Bonds payable, 6% (issued 2000, due 2020) \$1,200,000 Preferred 8% stock, \$100 par (no change during the year) 200,000 Common stock, \$50 par (no change during the year) 1,000,000 Income

A luggage carousel at an airport has the form of a section of a large cone, steadily rotating about its vertical axis. Its metallic surface slopes downward toward the outside, making an angle of 21.0° with the horizontal. A 37.0 kg piece of luggage is

22. ## Algebra 2

D'Andre has decided that he needs to get more exercise, so he is building a running regimen for himself. He decides that, beginning on Sunday, he'll fun 10 feet. On each subseqeunt day he'll double the distance he ran the previous day. So he'll run 20 feet

23. ## Chemistry

Write a balanced nuclear equation for the positron emission of each of the following nuclei: a) arsenic-74 b) oxygen-15

24. ## Chemistry

consider the reaction: N2(g) + O2 (g) --> 2NO (g) removing some of the N2(g) will_____ A) increase the concentration of O2 B) decrease the concentration of O2 C) increase the concentration of NO(g)

25. ## chemistry

105 of is initially at room temperature (22.0). A chilled steel rod at 2.0 is placed in the water. If the final temperature of the system is 21.3, what is the mass of the steel bar?

26. ## math

write the ratio as a percent: in a seventh grade class, 19/25 students voted of having a class picnic

27. ## chemistry

when a student removed the crucible cover afer the first strong heating in creating magnesium oxide, some of the white was knocked from the cover to the floor and was lost. did this loss cause the calculated number of moles of oxygen in the compound to be

28. ## math

two stores carry similar stereos for the same original price of \$573. one store (lets say homegoods)offers a 16% discount and the second store, sells it for \$458.40. which store gives the better discount (im stuck i dont know how to answer this plz help)

29. ## math

Am I correct? write the percent as a decimal: 92.8% a. 9280 b.92.8****** c. 0.928 d.9.28

30. ## Math

Untitled Stem and leaf plot. Vertical line separates each stem number from its first leaf number. First row. Stem 2. Leaves 6, 7, 7. Second row. Stem 3. Leaves 0, 2, 3, 3, 4. Third row. Stem 4. Leaves 0, 5. Key. 3 vertical line 0 means 30. What is the

31. ## Math

Two friends cut a large candy bar into equal pieces Harriet ate 1/4 of the pieces nisha ate 1/2 of the remaining pieces 6 pieces were left over how many pieces was the candy bar originally divided into

32. ## MATH

The path of a large stone fired from a catapult can be modeled by y= -0.00545x^2+1.145x where x is the distance the stone traveled (in yards) and y is the height of the stone (in yards). 1. find the distance the stone traveled. 2. find the maximum height

33. ## 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?

34. ## statistics

do students who learned English as well as another language simultaneously score worse on the SAT critical reading exam than the general population of test takers? the mean score di 501. A random sample of 100 test takers who learned English as another

35. ## physics

a stunt car driver testing the use of air bags drives a car at a constant speed of 25m/s for a total of 100 meters. he applies his brakes and accelerates uniformlu to a stop just as he reaches the wall 50 meters away. SKETCH THE A GRAPH SHOWING POSITION

36. ## Physics

An electron in the c level of a mercury atom returns to the ground state. Which photon energy could not be emitted by the atom during this process?

What are some large-scale economic shifts that have created our present service economy? What are some more recent developments that have given rise to our business environment? How would you characterize the most important elements of customer service in

38. ## (ENGLISH) please check over english work.

I have finished all of the questions, just need someone to look over them. I have posted these questions before, but someone told me to re-do them and I decided to post them again. Canada Day Love Match My mother stalked her future son in law, convinced he

39. ## Trigonometry

I'm having trouble figuring this out. An airplane has an airspeed of 160 mph. It is to make a flight in a direction of 80° while there's a 20 mph wind from 310°. What will the airplane's actual heading be? I'd appreciate any help especially on how you

40. ## Physics

A cube has sides of length L = 0.170 m. It is placed with one corner at the origin as shown in the figure below. The electric field is not uniform but is given by = (-6.00 N/C · m)x + (2.00 N/C · m)z. (a) Find the electric flux through each of the six

41. ## chemistry

Nitrobenzene, C6H5NO2, is prepared from benzene, C6H6, and nitric acid, HNO3. The other product of the reaction is water. When 22.4 g of benzene is reacted with an excess of nitric acid, 31.6 g of nitrobenzene is produced. What is the percent yield for

42. ## math

how wide is a rectangular table with a length of 2/3 yard and an area of 1/2 square yard

43. ## AP Chemistry

To have a buffer with a pH of 2.50, what volume of 0.510 M NaOH must be added to 100. mL of 0.230M H3PO4?

44. ## math

Am I correct? Write the decimal as a percent: 0.01 A.10% B.1%**** c.0.1% d.0.01%

45. ## Physical Science

Judy (mass 45.0 kg), standing on slippery ice, catches her leaping dog, Atti (mass 12kg), moving horizontally at 4.0 m/s. Use the conservation of momentum to find the speed of Judy and her dog after the catch.

46. ## Physics

A small first aid kit is dropped by a rock climber who is descending steadily at 1.5 m/s. A.)After 3.1s, how far is the kit below the climber?

47. ## algebra

Find the point-slope form of the line that passes through given the point and has the given slope.Include your work in your final answer. Type your answer in the box provided or use the upload option to submit your solution. (0, 0) m = 2

48. ## math

if cos x= 2/5, what is the measure of less than x, to the nearest degree?

49. ## geometrY

to estimate the height of a tree, Dave stands in the shadow of the tree so that his shadow and the tree's shadow end at the same point. Dave is 6 feet 4 inches tall and his shadow is 15 feet long. If he is standing 66 feet away from the tree, what is the

50. ## Trigonometry

I'm having trouble figuring this out. An airplane has an airspeed of 160 mph. It is to make a flight in a direction of 80° while there's a 20 mph wind from 310°. What will the airplane's actual heading be? I'd appreciate any help especially on how you

51. ## College Physics

A skier is traveling at a speed of 39.7 m/s when she reaches the base of a frictionless ski hill. This hill makes an angle of 14° with the horizontal. She then coasts up the hill as far as possible. What height (measured vertically above the base of the

52. ## Math

judy and ramey together have 42 stuffed animals. judy has 12 fewer animals than ramey. how many stuffed animals does each girl have?

53. ## geography

what word refers to a bay cove or other recess along the coast Indentation? From the Thesaurus: bay, bight, cove, creek [ chiefly British ], estuary, firth, fjord ( or fiord), inlet, loch [ Scottish ]

54. ## math

A rectangular photograph is mounted on a rectangular card. There is a border ofequal width around the photograph. The perimeter of the card is 40 centimeters longer than that of the photograph. Find the width of the border in centimeters.

55. ## chemistry

3.5g of CuCl2.2H2O were dissolved and reacted with excess Na2SO3 in the presence of HCl. After filtration, 1.5g of CuCl crystals was obtained. Calculate the %yield.

56. ## geometry.

in a scale drawing of a school's floor plan, 6 inches represents 100 feet. If the distance from one end of the main hallway to the other is 175 feet, find the corresponding length in the scale drawing.

57. ## College Chemistry

The specific heat of a certain type of cooking oil is 1.75 cal/(g·°C). How much heat energy is needed to raise the temperature of 2.83 kg of this oil from 23 °C to 191 °C?

58. ## math

A 24-inch piece of string is cut into two pieces. One piece is used to form a circle and the other is used to form a square. How should the string be cut so that the sum of the areas is a minimum?

59. ## Chemistry

How many grams of hydrogen are there in 140g of ethylene (C2H4) gas?

60. ## physics

A car is traveling at 58.2 km/h on a ﬂat highway. The acceleration of gravity is 9.8 m/s2 . If the coeﬃcient of friction between the road and the tires on a rainy day is 0.155, what is the minimum distance in which the car will stop?

61. ## Chemistry

The following data was obtained from titrating a solution containing 25 mL of 0.0100 M MgCl2 solution, 1 mL of NH3OH buffer, and 10 drops of Calmagite with EDTA. Calculate the concentration of EDTA. Report the answer with three sig figs. Please help it

62. ## math

Phillip, the proprietor of a vineyard, estimates that the first 9600 bottles of wine produced this season will fetch a profit of \$5 per bottle. However, the profit from each bottle beyond 9600 drops by \$0.0002 for each additional bottle sold. Assuming at

63. ## math

Bert is planning to open a savings account that earns 1.6% simple interest yearly. He wants to earn exactly \$160 in interest after 2 years. How much money should he deposit?

64. ## physics

A stone is dropped from the roof of a tall building. A person measures the speed of the stone to be 49 m/s when it hits the ground. What is the height of the building?

65. ## math

In order to accumulate enough money for a down payment on a​ house, a couple deposits \$ 688 per month into an account paying 6 % compounded monthly. If payments are made at the end of each​ period, how much money will be in the account in 4 ​years?

66. ## algebra

A triangle has points A(2, 2), B(2, 4), and C(6, 3) and is reflected over the x-axis. A'B'C' are the coordinates of the reflected image. What is the B' coordinate

67. ## Statistics

1. A simple random sample of FICO credit rating scores is listed below: 714 751 664 789 818 779 698 836 753 834 693 802 a. Find range, variance, and standard deviation. b. As of this writing, the mean FICO score was reported to be 678. Based on these

68. ## Chemistry

An empty flask weighs 128.632g. After vaporization of a sample of volatile liquid, at a measured temperature of 99.8 C. The flask is sealed, cooled to room temperature, and weighed. The mass is now 129.225g. The measured P atm is 757.7 torr. The flask is

chicken delight sells whole-chicken dinners for \$12 and half-chicken dinners for \$8. yesterday they sold a total of 400 dinners and took in \$4200. how many of each size dinners were sold?

70. ## math

Helping my son with %. I can't remember how. Here is the question. The baseball team has played 35 games so far this season. Of those games, they've won 21. What percent of the games played has the team won? Can someone help me with the formula

71. ## 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 v0 = 392 m/s, there are the two possible angles θ1 and θ2 between the rifle barrel and the horizontal such that

72. ## algebra

An archer releases an arrow at shoulder height. â€¢ Measure the distance from the fl oor to your shoulder when you are standing. Suppose you release an arrow and it hits the target at a point 5 ft above the ground. Sketch a possible parabolic path of

73. ## Confidentiality in Allied Health Essay

Can anyone help me find other resources to the graded project for Penn Foster? I have the AMA, and the Peen foster books. Anything else would be great.

74. ## Algebra

Alice travels 6 times faster than Bill. Traveling in opposite directions, they are 714 miles apart after 6 hours. Find their rates of travel.

75. ## math

a rectangular prism has a width of 92ft. and a volume of 240ft^3. Find the volume of a similar prism with a width of 23ft. Round to the nearest tenth if necessary. a)3.8ft^3 b)60ft.^3 c)15ft.^3 d)10.4ft.^3 I am totally cinfused by this. Can somebody please

76. ## Physics

While watching ocean waves at the dock of the bay, Otis notices that 10 waves pass beneath him in 30 seconds. He also notices that the crests of successive waves exactly coincide with the posts that are 5 meters apart. What are the period, frequency,

77. ## geometry

for that some problem: A board that is 12 feet long must be cut into 2 pieces that have lengths in a ratio of 3 to 2. Find the lengths of the two pieces. arn't you solving two parts because the board was cut in two?

78. ## Physics

A range in a national park is driving at 47 km/h when a deer jumps onto the road 70m ahead of the vehicle . After a reaction of t seconds, the ranger applies the brakes to produce an acceleration of -2.00 m/s^2. What is the maximum reaction time allowed if

79. ## physics

The punter on a football team tries to kick a football so that it stays in the air for a long "hang time." If the ball is kicked with an initial velocity of 23.0 m/s at an angle of 58.5° above the ground, what is the "hang time"?

80. ## medical billing and coding from Penn Foster

I am writing a research paper for HIPAA, I beleive I have most of the information to do the paper. I do not understand what it means by writing it in proper MLA/APA citation style? Could someone please explain this to me and show me a small example of what

81. ## psy 2PSY/210 Psychology and Health Problems10

I need help with an assignment for psy 210 i need to write about PSY/210 Psychology and Health Problems 1400 words any help would be greatly appreciated

82. ## social studies

Am I correct? What effect did the passage of jim crow laws in the 1880s have on the lives of african americans? My answer was: *it made racial segregation legal in the south******* need answer by today

83. ## US history

What challenges did William Taft face as president? Heard he was one of the worst presidents, just didn't know why...any info would be helpful!

84. ## Geometry/trig

How do I find the geometric mean between 12 and 2.4?

85. ## geometry

A board that is 12 feet long must be cut into 2 pieces that have lengths in a ratio of 3 to 2. Find the lengths of the two pieces.

86. ## chemistry

what type of intermolecular force describes the interaction between Ca2+ and Mg2+ with water? a. dipole-dipole b. hydrogen bonding c. ion-dipole d. London dispersion

87. ## physical science

A 250.0 kg roller coaster car has 20,000.0 J of potential energy at the top of the hill. Neglecting frictional losses, what is the velocity of the car at the bottom of the hill?

88. ## math

what do you get when you cross a stick of dynamite with a lemon pie?

89. ## math

what do you get when you cross two ducks with a match?

90. ## College Physics

Two crates are connected by a massless rope that passes over a pulley. If the crates have mass 33 kg and 82 kg, find their acceleration. If the system begins at rest, with the more massive crate a distance 12 m above the floor, how long does it take for

91. ## math

The management of Ditton Industries has determined that the daily marginal revenue function associated with selling x units of their deluxe toaster ovens is given by the following, where R '(x) is measured in dollars/unit. R '(x)=-0.1x-40 (a) Find the

92. ## history

Why do Jewish people study the Talmud and Hebrew Bible?

93. ## social studies

am i correct? progressive ida tarbell is credited with *writing a series of articles about the dangers of trusts ******* *creating blue laws *changing childlabor laws * writing a novel about dangerous practices in the meat packing industry my answer: A

94. ## Math

A zoo measured the wingspan, in millimeters, of 9 butterflies. 55 50 54 57 50 55 53 52 55 What is the median length of the wingspans? 50 mm 54 mm 55 mm 57 mm I think it is 54 mm.

95. ## Geometry

A boat left dock A, traveled north for 10 miles, then 45 East of north for 20 miles and docked at B. A.How far north did the boat travel? How far east did it travel? B. Find the magnitude and direction of the direct-path vector AB. a. North 24.1 East 14.1

96. ## Maths

What number am I? I am a multiple of 3 I am also a multiple of 7 My units digit is half my tens digit

97. ## math

The owner of a luxury motor yacht that sails among the 4000 Greek islands charges \$430 per person per day if exactly 20 people sign up for the cruise. However, if more than 20 people (up to the maximum capacity of 90) sign up for the cruise, then each fare

98. ## Chemistry

Calculate the amount (volume) of 6.25% (wt./vol.) NaOCl solution (commercial bleach) required to oxidize 150 mg of 9-fluorenol to 9-fluorenone. Whenever appropriate, use balanced chemical equations as a part of your calculation.

99. ## chemistry

A gas that occupies a volume of 6.75L at 89.0atm will occupy what volume at 68.55mm Hg if the temperature remains constant? (89.0atm/0.09atm)*6.75=6,680 V2=6680 Is this right??