# Kara

Popular questions and responses by Kara
1. ## algebra

A plane that carries mail makes a round trip each day from Chicago to New York. It makes 3 intermediate stops on the way to New York and 1 intermediate stop on the way back to Chicago. Suppose you make a graph of the altitude of the plane for one day, with

2. ## math:order of operation

TWO PART Ellen is playing a video game in which she captures butterflies. There are 3 butterflies onscreen, but the number of butterflies doubles every minute. After 4 minutes, she was able to capture 7 of the butterflies. A)LOOK FOR A PATTERN. Write an

3. ## algebra

A rope is cut into three and one-third is used. Then one-fourth of the remaining rope is cut off and used. The piece left is 6 meters long. How many meters long was the rope originally?

4. ## Science

As early as 1938, the use of NaOH was suggested as a means of removing CO2 from the cabin of a spacecraft according to the following reaction : NaOH+CO2 -> Na2CO3 + H2O. If the average human body discharges 925. 0 g of CO2 per day how many moles of NaOH

5. ## Physics

A 22 cm diameter bowling ball has a terminal speed of 85 m/s. What is the ball's mass?

6. ## physics

A boat takes 3hr to travel 30 km down a river, then 5hr to return. How fast is the river flowing?

8. ## Pre Cal

An airplane leaves an airport and flies due west 150 miles and then 230 miles in the direction S 39.67 degrees W. How far is the plane from the airport at this time to the nearest mile.

9. ## Chemistry

Howard Wolowitz is developing a radiation detector for the Intemational space Station. He uses a thin film composed of a metal alloy that has a threshold frequency of 5.5x10^15 Hz. When radiation is shone on the thin film, the fastest electron emitted has

10. ## Physics

The ultrasonic transducer used in medical ultrasound imaging device is a very thin disk m = .10g driven back and forth in SHM at 1.0 MHz by an electromagnetic coil. a.) The maximum restoring force is 40,000 N. What is the maximum oscillation amplitude that

One box holds 16 crayons. Another box holds 24 crayons. Write a sentence using words that compare the crayons in the two boxes. (not a number sentence 24>16)

12. ## Science

A liquid solution of formaldehyde is 37% pure. This solution has a specific gravity of 1.037. The molecular weight of formaldehyde is 30.0. To 1.00 ml of this impure stock solution is added quantity sufficient total the total volume to 500 ml. If 1.00 ml

13. ## physics

A 750g block is attached to a vertical spring whose stiffness constant is 1N/m . The block is released at the position where the spring is unextended. a) What is the maximum extension of the spring? How long does it take the block to reach the lowest

14. ## statistics

Suppose x is a uniform random variable with c=10 and d=60. Find the probability that a randomly selected observation exceeds 30.

15. ## CHEM!

A radio station's channel, such as 100.7 FM or 92.3 FM, is actually its frequency in megahertz (MHz), where 1MHz=10^6Hz. Calculate the broadcast wavelength of the radio station 98.30 FM.

16. ## Language Arts

I need to write to compare and contrast geology and etymology. How do I do that?

17. ## Math

The corners of a square lie on a circle of Diameter D = 0.35m. Each side of the square has a length L. Find L. - I'm not quite sure how to solve this problem

18. ## Chem!

How much energy does the electron have initially in the n=4 excited state? Enter your answer numerically in joules.

19. ## Spanish

I need help understanding how to ask/answer questions using the word 'Que'. If the question is ?Que' estudias tu'? is the correct answer: 'Yo estudio ___' and then whatever you're studying or could I simply answer 'Estudio ____' Also, in these questions,

20. ## Physics

Two archers shoot arrows in the same direction from the same place with the same initial speeds, but at different angles. One shoots at 45.0degrees above the horizontal, while the other shoots at 60.0 degrees.If the arrow launched at 45.0 lands 225 from

21. ## Science

If 2.50 mol of copper and 5.50 mol of silver nitrate are available to react by a single replacement:Cu + 2AgNO3 -> Cu(NO3)2 + 2Ag What is the amount in moles of each product formed?

22. ## CHEM

Calculate the density of oxygen, , under each of the following conditions: STP 1.00atm and 25.0 degrees celsius Express your answers numerically in grams per liter. Enter the density at STP first and separate your answers by a comma.

23. ## Physics

A physics book slides off a horizontal tabletop with a speed of 1.10m/s . It strikes the floor in 0.350s . Ignore air resistance. The height of the tabletop above th floor is .600m.The horizontal distance from the edge of the table to the point where the

24. ## physics

A phonograph record has an initial angular speed of 37 rev/min. The record slows to 10rev/min in 1.3 s. What is the record’s average angular acceleration during this time interval

25. ## ASU

How much MnO2(s) should be added to excess HCl(aq) to obtain 215 mL of Cl2(g) at 25 °C and 705 Torr?

26. ## Chemistry

List SOF2, SO2F-, and S2O3^-2 in order of increasing sulfur-to-oxygen bond length. How do u tell by just looking at the Lewis structures?

27. ## Pre Cal

Two tracking stations are on the equator 158 miles apart. A weather balloon is located on a bearing of N 41degrees E from the western station and on a bearing of N 21degrees E from the eastern station. How far is the balloon from the western station.

28. ## CHEM

To identify a diatomic gas (), a researcher carried out the following experiment: She weighed an empty 1.00- bulb, then filled it with the gas at 1.10 and 23.0 and weighed it again. The difference in mass was 1.27 . Identify the gas. Express your answer as

29. ## Physics

An electron with a horizontal speed of 4.0 * 10^6 m/s and no vertical component of velocity passes through two horizontal parallel plates. The magnitude of the electric field between the plates is 150 n/c the plates are 6.0 long A) calculate the vertical

30. ## Chemistry

Element x has the highest first electron affinity in its period, the ground state electron configuration of its common is: [Kr] 5s2 4d10 5p6 Element Y is the second largest element in its period; its valence electron are in orbital(s) that have n= 6. What

31. ## Math

Please check my responses! ASAP Consider the following data set: 3,4,6,7,9,9,11 If 5 were added to each of the values, how would that affect the median? My Answer: The median would change and increase. Consider the following data set: 3,4,6,7,9,9,11 If 5

32. ## Math

Determine whether the following statement makes sense or does not make sense, and explain your reasoning: By modeling attitudes of college freshmen from 1969 through 2006, I can make precise predictions about the attitudes of the freshman class of 2020. A)

33. ## Chemistry

The elements of which group in the periodic table release the most energy by gaining an electron? The elements of which group in the periodic table absorb the most energy when gaining an electron?

34. ## math

.) An architect is building a model of a tennis court for a new client. On the model, the court is 6 inches wide and 13 inches long. An official tennis court is 36 feet wide. What is the length of a tennis court? The architect decides to build a larger

35. ## chemistry

If I contain 3 moles of gas in a container with a volume of 60 liters and at temperature of 400 K, what is the pressure inside the container? Ideal Gas Law: PV=nRT I know I'm given the volume, temperature, and numbers of moles of gas, but how do I know

36. ## Physics

AM radio signals are broadcast at frequencies between 540 kHz and 1585 kHz (kilohertz) and travel 3.0 X 10^8 m/s. a. What is the range of the wavelengths for the signals? (from shortest to longest). b. FM frequencies range between 88MHz and 108 MHz

37. ## physics

An object has a height of 65 cm and is positioned 6.2 m in front of a spherical mirror. Its image distance is 1.9 m. Calculate the height (including its sign) of the image in centimeters.

38. ## math

Norman received \$60 for working 8 hours. At this rate, how much would receive for working 35 hours?

39. ## chemistry

Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water? increasing temperature increasing pressure decreasing surface area decreasing temperature

40. ## Chemistry

I have this question from an old exam for review. I tried the question but can't get the right answers. An electron in an electronically excited hydrogen atom undergoes a transition from a 6d to a 2p orbital, resulting in the emission of a photon. The

41. ## math

my math homework tells me to find the area of a circle using it's circumference. the circumference given was 6π yd. (6 pi yard). can someone explain to me how to find the area?

42. ## physics

The displacement of a block attached to a horizontal spring is given by x=0.5sin(7.8t−1.06)m What is the earliest time (t>0) at which x=0.16m? Find the acceleration when x=0.44m helppppppp

43. ## Math

Which of the following relations has this characteristic: The relation is a function containing two ordered pairs. Reversing the components in each ordered pair results in a relation that is not a function. A) {(0, 2), (0, 3)} B) {(2, 3), (3, 2)} C) {(3,

44. ## History

Describe how living conditions in cities changed during the Second Industrial Revolution. Your answer should include • a brief definition of the Second Industrial Revolution • a description of urban life and the problems created by industrialization

46. ## PHYSICS

A capacitor consists of a solid metal sphere of radius 3 cm placed at the center of a thin metal spherical shell of radius 12 cm. The space between is empty. What is the capacitance?

47. ## Sciene

How do living things get rid of cellular waste?

48. ## Geometry

Given: Segment CE bisects

49. ## Chemistry

I have this question from an old exam for review. I tried the question but can't get the right answers. An electron in an electronically excited hydrogen atom undergoes a transition from a 6d to a 2p orbital, resulting in the emission of a photon. The

50. ## Math

An asset is purchased for \$50,000. It has an estimated useful life of eight years and salvage value of \$6,000.if the asset is depreciated using the double-declining balance method,what are the depreciation expense and book value at the end of year two?

51. ## Math

An asset is purchased for\$50,000.It has an estimated useful life of 12 years and a salvage value of \$5,000. What is the annual depreciation of the asset using the straight-line method?

52. ## Physics

How does Rutherford's model of the atom account for the back-scattering of alpha particles directed at the gold foil?

53. ## physics

A block attached to a spring is displaced from equilibrium to the position x=+0.5m and released. The period is 2.1s . At what positions and times during the first complete cycle do the following conditions occur. a) |v|=0.5vmax, Where vmax is the maximum

54. ## Algebra

A dog trainer has 64 ft of fencing that will be used to create a rectangular work area for dogs. If the trainer wants to enclose an area of 192 ft2, what will be the dimensions of the work area?

55. ## chemistry1

how much heat is needed to melt 25.4 grams of iodine at its melting point?(Hfusion+61.7J/g)

56. ## chemistry

classify the compound as having ionic, polar covalent, or pure covalent bonds. Sb2P5 I know that a metal and nonmetal form an ionic bond, and two nonmetals form covalent bonds. The trouble I am having is that Sb is a metalliod and when it forms with a

57. ## Math

Use the sum or difference identity to find the exact value of tan 105 degree.

58. ## Physics (Mechanics)

A uniform plate of height H= 0.69 m is cut in the form of a parabolic section. The lower boundary of the plate is defined by: y= 1.10x^2. The plate has a mass of 5.62 kg. Find the moment of inertia of the plate about the y-axis. Alright, I've done this so

59. ## computers

Your sister owns a small clothing store. During a conversation at a family dinner, she mentions her frustration with having to manually track and reorder high demand items. She would like an automated system but has a very small budget. Write a 4-5 page

60. ## Physics

The resistance of the wire in the windings of an electric starter motor for an automobile is 0.0190 Ohms. the motor is connected to a 12 V battery. What current will flow through the motor when it is stalled?

61. ## Math

The pressure exerted by a certain liquid at a given point varies directly as the depth of the point beneath the surface of the liquid. The pressure at 30 meters is 80 newtons per square centimeter. What pressure is exerted at 50 meters?

62. ## Physics

Which color light is the result of a greater energy transition, red or blue?

63. ## physics

A 300g particle oscillating in SHM travels 35cm between the two extreme points in its motion with an average speed of 30cm/s. Find: a) The angular frequency. b) The maximum force on the particle. b) The maximum speed.

64. ## chemistry

A light green powder is heated in a test tube. A gas is given off, while the solid becomes black. In which classification of matter does the green powder belong? Explain your reasoning.

Envision you have served as business manager for over two years. you noticed that for the last 12 months the business has regularly had cash assets of\$20,000 or more at the end of each month.you have found a 6-month certificate of deposit that pays 6%

66. ## Chemistry

A 9.00-L container holds a mixture of two gases at 43 °C. The partial pressures of gas A and gas B, respectively, are 0.257 atm and 0.579 atm. If 0.110 mol a third gas is added with no change in volume or temperature, what will the total pressure become?

67. ## English

I'm doing a pro/con argumentative essay. Is this topic sentence argumentative? The benefits of war and economics are better than global peace.

68. ## History

Pro-war and economics. What are some reasons for that besides since their is a war going on those people fighting are employed so more jobs become available (I don't have a reason why or know if that's right)

69. ## physics

The speed of sound in water is 1498 m/s. A sonar signal is sent straight down from a ship at a point just below the water surface, and 1.95 s later, the reflected signal is detected. How deep is the water?

70. ## Physics

In a skating stunt known as "crack-the-whip," a number of skaters hold hands and form a straight line. They try to skate so that the line rotates about the skater at one end, who acts as the pivot. The skater farthest out has a mass of 73.0 kg and is 7.70

71. ## Physics

An electron with a horizontal speed of 4.0 * 10^6 m/s an no vertical component of velocity passes through two horizontal plates. The magnitude of the electric field between the plates is 150 n/c. The

72. ## math

Two blocks sit on a horizontal surface. They are connected to each other by a massless cord. The block on the left has a mass of 5.1 kg and the block on the right has a mass of 3.0 kg. Another massless cord is attached to the block on the right and pulls

73. ## physics

The speed of sound in water is 1498 m/s. A sonar signal is sent straight down from a ship at a point just below the water surface, and 1.95 s later, the reflected signal is detected. How deep is the water?

74. ## History Ms. Sue

Is this right. Pro-War (Remember I'm against global peace) What else can I add about individuals wanting war because of the advancement of technolgy without using more examples of the technologys used. Thank You (All more worked is cited from those

75. ## Math

Joe wants to carpet a 12 foot by 18 foot rectangular living room and a square bedroom. One side length of the square bedroom is 12 feet. Carpet costs \$3.50 per square foot. What percent of the total amount Joe will pay will be spent on carpeting the

I need help adding some stuff to this exam please help Exam 028005 It has come to my attention after a conversation with a DMD Medical Supplies representative that some of our work for them has been subpar. Knowing we are a customer driven company I did

77. ## chemistry

Potassium cyanide (KCN) reacts with acids to produce the poisonous hydrogen cyanide gas, HCN, according to the reaction below: KCN(aq) + HCl(aq) = HCN(g) + KCl(aq) If a sample of 0.653 g of KCN is placed in an excess of HCl, how much HCN, in grams, is

78. ## CHEM

To identify a diatomic gas (), a researcher carried out the following experiment: She weighed an empty 1.00- bulb, then filled it with the gas at 1.10 and 23.0 and weighed it again. The difference in mass was 1.27 . Identify the gas.

79. ## physics

Your friend weighs 145 lb. What is her mass in kilograms if she went to the moon where the acceleration of gravity is 1/6 that on earth? i know that her weight in newtons is 652.5, and that her mass in kilograms is 65.25, and that her weight in newtons if

80. ## Chemistry

Is the NO3- single bond length shorter than NO2H single bond length? Based on Lewis structure of it.

81. ## math

can you fill in the missing square with the number that logically belongs there? 2 2 2 2 2 6 10 14 2 10 26 50 2 14 50

82. ## Physics

When an electron makes a transition from its first quantum level to ground level, the energy difference is carried by the emitted photon. In comparison, how much energy is needed to return an electron at ground level to the first quantumlevel?

83. ## History

Can you please explain this to me the best that you can? GP would create tolerance because everyone would be in each other's space due to overpopulation. What is a good follow up sentence to put after that.

84. ## Probability

You throw a beanbag at a wall with 7 colored squares, each with an area of 1/4^2. If you hit a square, you win a prize. What is the probability of winning a prize? You need more information. For starters: 1) what is the total area of the wall? 2) Are

85. ## Chemistry

The photoelectric effect is a concern in space, where parts of a spacecraft exposed to the sunlight will develop a net positive charge, which can interfere with or damage sensitive cir The panels that cover the exterior of the Space Shuttle are composed of

86. ## Computer science

As a member of the Information Security team at a small college, you have been made the project manager to install an access control system (ACS) in a dormitory. The ACS will automatically unlock the dormitory doors via an electronic proximity reader and

87. ## Chemistry

I am having figuring out the Lewis Dot Structure of ICl2-? Can anyone help???

88. ## English

Does this sound argumentative enough and is worded correctly. ( I know that this isn't true but in my case for this paper this is what we have to do) Fighting war for freedom is more efficient than having global peace and freedom. OR fighting war for

89. ## English-Word Choice

What is another way to say waging war? I used the theasurus to find a word that meant the same as waging but the search results came back as nothing was found.

90. ## chemistry

Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water? increasing temperature increasing pressure decreasing surface area decreasing temperature

91. ## History Ms. Sue

What else can I add for freedom of want. I need to add a few more sentences any ideas. So far I have talked about everyone would be able to live a good life with food, shelter, and expression (i expanded on that some). every individual would be at ease

92. ## Biology

Unikonta paraphyletic or monophyletic? Animalia paraphyletic or monophyletic?

93. ## college

the perimeter of a rectangle is twice the sum of its width and it length. the perimeter is 40meters and its lenght is 2 meters more than twice its width.

94. ## algebra

The difference between the ages of two friends is 2 years. The sum of their ages is 74 years. Find the age of the older friend.

95. ## Quick ?

War the Worlds Solution is the title of my paper should there be an apostrophe in the word worlds? I think so but I just want to make sure I'm right.

96. ## History Ms. Sue

How is this a negative thing related to war and economics. most wars create zones of intense destruction of capital such as farms, factories, and cities. These effects severely depress economic output. ( I understand that bombs and other wartime activities

97. ## History

What would my topic sentence be for this paragraph that I have been working on? Because my points are overpopulation, economics, and religion. I have another ?. Pro-war and economics. I already expanded on the creation of more jobs due to the need of

98. ## statistics

A sign is posted in an elevator stating that the maximum number of people allowed is 25, and that the maximum weight capacity is 4000lbs. Suppose the distribution of the variable Weight (among the population using the elevator) is normal with mean 150lbs

cos 75 deg