elizabeth

Most popular questions and responses by elizabeth
1. Health

the heart is composed of how many loops

asked on January 13, 2015
2. math

The box plots below show the average daily temperatures in January and December for a U.S. city: two box plots shown. The top one is labeled January. Minimum at 0, Q1 at 10, median at 12, Q3 at 13, maximum at 16. The bottom box plot is labeled December.

asked on January 30, 2016
3. Social Studies

What is the answer I am freaking out, PLZ help!! Why did conflict arise between Henry II and Thomas Becket? A. Henry refused to appoint Becket as archbishop of England. B. Henry resisted the Norman invasion of England. C. Becket refused to recognize Henry

asked on October 12, 2018
4. CHEM

is breaking an egg a chemical or physical change? is cooking an egg a chemical or physical change?

asked on October 17, 2010
5. Spanish

I need to make each statement into a question using the interrogative words. Can someone revise the questions Adónde Cuándo Cuántos De dónde Dónde Por qué Qué Quién ¿ Dónde caminan Paco y Rosa? Paco y Rosa caminan a la biblioteca. ¿ De dónde el

asked on September 22, 2013
6. Social Studies

Which of the following is most closely associated with the idea of nullification? A.States' rights B.Tariffs** C.Foreign policy D.Suffrage

asked on November 1, 2016
7. English

"Tolerance is the word used most often when this kind of coexistence succeeds, but tolerance is a vanilla-pudding word, standing for little more than the allowance of letting others live unremarked and unmolested. Pride seems excessive, given the American

asked on September 16, 2015
8. Chemestry

If an ion contains 50 protons,68 neutrons and 48 electrons.what is its symbol?

asked on August 1, 2014
9. Math-Trigonometry

Can someone help me with this problem. -A Ferris wheel has a radius of 37.8 feet. The bottom of the Ferris wheel sits 0.7 feet above the ground. You board the Ferris wheel at the 6 o'clock position and rotate counter-clockwise. A)Define a function, f that

asked on April 30, 2017

Many people who care about conserving natural resources would choose to use wind energy to power their homes. However, wind power is not an option for people in many parts of the coutnry. Explain what the benefits of wind power are and why it is not

asked on May 18, 2014
11. Language Arts

Read the following topic. How could you rewrite the topic to form a focused thesis statement? *Tablets and School* -Schools use tablets daily -The of tablets positively affects students achievement in school

asked on May 22, 2015
12. Science

Please help! Many people who care about conserving natural resources would choose to use wind energy to power their homes. However, wind power is not an option for people in many parts of the country. Explain what the benefits of wind power are and why it

asked on May 18, 2014
13. maths

What is the gradient of a line that has an angle of inclination of 75°? Enter the answer, rounded to 4 significant figures in the box below. the answer should be a number. ???

asked on May 8, 2011
14. Calculus

A metal cylindrical container with an open top is to hold 1 cubic foot. If there is no waste in construction, find the dimensions which will require the least amount of material.

asked on October 13, 2012
15. moretlwe

describe a recent service delivery protest in your community or in the neighbourhood.

asked on August 5, 2015
16. chemistry

HCN(aq) + SO4-2(aq) HSO4-(aq) + CN -(aq) a. What is the Bronsted - Lowry acid in this equation? b. What is the Bronsted - Lowry base in this equation? c. What is the conjugate acid in this equation? d. What is the conjugate base in this equation?

asked on May 7, 2012
17. physics

A 30g ball rolls around a 40cm diameter L-shaped track at 60rpm. What is the magnitude of the net force that the track exerts on the ball? rolling friction can be neglected.

asked on November 15, 2009
18. math

Suppose you have a wallet with \$5 bills, \$10 bills, and \$20 bills. If the probability of picking a \$20 bill is 4/15, and the probability of piciing a \$5 bill is 1/3, what is the probability of picking a \$20 bill? a. 1/15 b. 1/5 c. 4/15 d. 2/5 **

asked on May 19, 2016
19. Physics

At t=0 a particle starts from rest at x=0, y=0 and moves in the xy plane with an acceleration a=(4.0i+3.0j)m/s^2. Determine (a) the x and y components of velocity, (b) the speed of the particle, and (c) the position of the particle, all as a function of

asked on September 12, 2013
20. physics

As a science project, you drop a watermelon off the top of the Empire State Building, 320 m above the sidewalk. It so happens that Superman flies by at the instant you release the watermelon. Superman is headed straight down with a speed of 36.0 m/s. How

asked on July 25, 2008
21. math

The store employee works 35 hours per week. Which inequality can be used to find the dollar value, x, of weekly sales that the employee must make to earn more than \$400 per week?

asked on March 31, 2017
22. Physics

Bicyclists in the Tour de France do enormous amounts of work during a race. For example, the average power per kilogram generated by seven-time-winner Lance Armstrong (m = 75.0 kg) is 6.50 W per kilogram of his body mass. (a) How much work does he do

asked on October 20, 2012
23. Language Arts

Which of the following sentences contains a pronoun in the objective case? A. What costume should I wear to the party tonight? B. Maybe Martha will loan me something. C. Her costumes are always the best. D. She won first prize in a Halloween contest last

asked on February 27, 2015
24. Health

the muscular system is essential because it allows our bones to

asked on January 12, 2015
25. Mathematics

A garrison of 1200 men has sufficient ratios for 25 days at the rate of 2400g per man per day. If 300 man join them and the ratios are reduced to 2000g per man per day,how long will the road last all of them? Thank you :)

asked on March 13, 2012
26. Chemistry

For the following reaction, Kp = 3.5 104 at 1495 K. H2(g) + Br2(g) 2 HBr(g) What is the value of Kp for the following reactions at 1495 K? (a) HBr(g) 1/2 H2(g) + 1/2 Br2(g) (b) 2 HBr(g) H2(g) + Br2(g) (c) 1/2 H2(g) + 1/2 Br2(g) HBr(g)

asked on February 20, 2012
27. Art

Hi, could someone check this for me, thx :) Why is it harder to find examples of 3D art rather than 2d art in early human history?? A) No early civilizations made 3D art B) 3D art is only part of the digital arts C) People have always perferred 2D art to

asked on November 7, 2017
28. Chemistry

The solubility product for Ni(OH)2(s) is 1.6 ✕ 10−16. Calculate the value of ℰ° for the following half-reaction. Ni(OH)2 + 2 e− → Ni + 2 OH − I have no idea what equation to use or how to solve this problem

asked on May 11, 2018
29. Physics

(a) Find the electric field at x = 5.00 cm in Figure 18.52(a), given that q = 1.00X10^-6;C . (b) At what position between 3.00 and 8.00 cm is the total electric field the same as that for –2q alone? (c) Can the electric field be zero anywhere between

asked on August 8, 2016
30. Physic

Hi, I'm learning about simple harmonic motion of a mass-spring system and I've been working at 2 problems for the past hour. I believe I have the right formula and I know what the answers should be but Im getting a different answer. Can you explain it step

asked on January 20, 2015
31. Calculus

Breathing is cyclic and a full respiratory cycle from the beginning of inhalation to the end of exhalation takes about 5 seconds. The maximum rate of air flow into the lungs is about 0.5 L/s. This explains, in part, why the function

asked on April 27, 2012
32. Language Arts

Which word has a meaning similar to prodigy? -Statue -Babysitter -Athlete -Wonder**

asked on September 17, 2015
33. Roosevelt honors geometry

ray OC bisects

asked on November 27, 2007
34. Math-Ratios

In a college library, there are 4 times as many nonfiction books as fiction books. A.Find the ratio of the number of nonfiction books to the number of fiction books. B.How many times the number of nonfiction books is the number of fiction books? C.Suppose

asked on January 19, 2017
35. math

When a coin is tossed four times, sixteen equally likely outcomes are possible as shown below: HHHH HHHT HHTH HHTT HTHH HTHT HTTH HTTT THHH THHT THTH THTT TTHH TTHT TTTH TTTT Let X denote the total number of tails obtained in the four tosses. Find the

asked on December 5, 2009
36. Chemistry

A compressed gas cylinder contains 1.00 103 g of argon gas. The pressure inside the cylinder is 2096 psi (pounds per square inch) at a temperature of 19°C. How much gas remains in the cylinder if the pressure is decreased to 656 psi at a temperature of

asked on February 9, 2012
37. Math

Why is 25 a composite number help!!

asked on December 3, 2016
38. Physics

The cheetah is one of the fastest-accelerating animals, because it can go from rest to 18.2 m/s (about 41 mi/h) in 2.7 s. If its mass is 114 kg, determine the average power developed by the cheetah during the acceleration phase of its motion. Express your

asked on October 20, 2012
39. Language Arts

You are trying to convince your community council to install recycling bins at the local park. Which of the following types of writing could you use most effectively to try to change the situation? -A reflective essay about the fun that you and your

asked on May 22, 2015
40. Chemistry

Consider a 1.0 L container of Neon gas at STP. Will the average kinetic energy, average velocity,and frequency of the collisions of gas molecules with the walls of the container increase, decrease, or remain the same under each of the following conditions?

asked on February 24, 2017
41. art 101

According to the author, a. the interpretation of a work of art is objective. b. a work of art may fall into more than one theme. c. it doesn’t make sense to compare art from different cultures. d. all of these are the case: the interpretation of art is

asked on October 5, 2012
42. Chemistry

The vapor pressure of CCl3F at 300 K is 856 torr. If 11.5 g of CCl3F is enclosed in a 1.0 L container, will any liquid be present? If so, what mass of liquid?

asked on February 19, 2010
43. biology

North American wolves can have gray fur or black fur. A single gene with two alleles codes for fur color. Information about the fur color of parents and offspring in four wolf families is shown below. Family 1 | gray fur x black fur | 3 gray fur : 2 black

asked on January 2, 2019
44. earth

3. What can scientists learn from the rate at which radioactive elements decay?

asked on December 10, 2013
45. Physics

A girl is skipping stones across a lake. One of the stones accidentally ricochets off a toy boat that is initially at rest in the water (see the drawing below). The 0.094-kg stone strikes the boat at a velocity of 14 m/s, 15° below due east, and ricochets

asked on October 22, 2012
46. Physics

A tow truck is pulling a car out of a ditch by means of a steel cable that is 9.3 m long and has a radius of 0.50 cm. When the car just begins to move, the tension in the cable is 1070 N. How much has the cable stretched? Answer in m

asked on November 30, 2012
47. Ed Tech

Before katie turns in the paper she typed she wants a peer to review it and give her feedback. katie uses her all in one printer to scan her edit,prints, and send them to her friend. An all in oneprinter is -Input device -Output device -Data storage device

asked on September 10, 2015
48. biology

When exposed to bright sunlight, some people involuntarily sneeze. This reaction is known as a photic response. It is controlled by a single gene with two alleles, H and h. A man and a woman who sneeze when exposed to bright sunlight are both heterozygous

asked on January 2, 2019
49. Physics

At what positions is the speed of a simple harmonic oscillator half its maximum? That is, what values of x / X give v = ±vmax/2 , where X is the amplitude of the motion? Hello, I am so confused about this question. I am not really sure where to start.

asked on July 24, 2016

A 0.63-kg metal sphere oscillates at the end of a vertical spring. As the spring stretches from 0.13 to 0.22 m (relative to its unstrained length), the speed of the sphere decreases from 5.95 to 4.75 m/s. What is the spring constant of the spring? (The

asked on December 1, 2012
51. math

Dina and Masha start out on a bike path 10 km long at the same time. When Dina reaches the end of the 10 km, Masha still has 2 km left to bike. If Dina’s biking speed is 5 km/h, find Masha’s biking speed.

asked on May 15, 2016
52. Introduction to statistics

A researcher would like to estimate the population proportion of adults living in a certain town who have at least a high school education. No information is available about its value. How large a sample size is needed to estimate it to within 0.19 with

asked on July 17, 2014
53. math

Name the position of the first digit of the quotient. 1. 832/4 2. 217/7 I don't understand. Someone please explain to me.

asked on April 8, 2014
54. social studies

How is Paraguay different from the other countries in the Southern Cone? 1.Almost all of its people speak a South American Indian language. 2.It has a higher percentage of people with only European ancestry. 3.Most of its people are of purely of South

asked on November 28, 2018
55. Math shopping discounts

Situation: You want to buy three books that are on sale at 20% off. The original prices of the books are \$2.50, \$4.95, and \$6.00. How much will you save? Calculation With Distribution

asked on November 18, 2016
56. Math

Mark is building a custom wooden frame around his flower bed.The length of the frame is 5.45 feet, and the width of the frame is3.275 feet. What is the area of the flower bed without rounding?_________square feet

asked on December 12, 2015
57. Physics

A spherical mirror is polished on both sides. When the concave side is used as a mirror, the magnification is +3.0. What is the magnification when the convex side is used as a mirror, the object remaining the same distance from the mirror?

asked on April 17, 2013
58. Physics

In a science fiction novel two enemies, Bonzo and Ender, are fighting in outer space. From stationary positions they push against each other. Bonzo flies off with a velocity of +1.7 m/s, while Ender recoils with a velocity of −2.7 m/s. (b) Determine the

asked on October 22, 2012
59. Algebra

1)More than 450 students went on a field trip. Ten buses were filled and 5 more students traveled in a car. a) Write an inequality to represent the situation. Be sure to define your variable. b) Solve the inequality to find the minimum number of people on

asked on September 17, 2016
60. math

You received a \$100 gift certificate to a clothing store. The store sells t-shirts for \$15 and dress shirts for \$22. You want to spend no more than the amount of the gift certificate. You want to leave at most \$10 of the gift certificate unspent. You need

asked on December 4, 2018
61. Physics

Blocks of mass m1 and m2 are connected by a massless string that passes over a frictionless pulley. Mass m1 slides on a frictionless surface. Mass m2 is released while the blocks are at rest. The pulley is a solid disk with a mass mp and a radius R. Use

asked on November 24, 2008
62. Science

In general what would a scientist do after forming a testable questions? -Design an experiment**** -Develop a hypothesis -Draw a conclusion -Analyze data

asked on September 15, 2015
63. physics

A 3.00x10^-3 kg lead bullet enters a target with a speed of 2.00x10^2 m/s and comes to rest within the target. Calculate the rise in temperature of the bullet assuming that 80.0% of the heat produced is absorbed by the bullet. The Specific heat of lead is

asked on March 25, 2012
64. Physics

(a) A narrow beam of light containing yellow (580 nm) and green (550 nm) wavelengths goes from polystyrene to air, striking the surface at a 30.0º incident angle. What is the angle between the colors when they emerge? (b) How far would they have to travel

asked on July 27, 2016
65. Math

Are there any connections Academy users here?

asked on May 30, 2018
66. Chemisty

A 25-mL sample of 0.160M solution of NaOH is titrated with 17 mL of an unknown solution of H2SO4. What is the molarity of the sulfuric acid solution? A. 0.004M H2SO4 B. 0.235M H2SO4 C. 0.117M H2SO4 D. 0.002M H2SO4

asked on February 18, 2014
67. GEOMETRY

ray OC bisects

asked on November 28, 2007
68. Biology

What is the difference between tolerance range and optimum range in Biology?

asked on January 27, 2016
69. Chemistry

A piece of solid carbon dioxide, with a mass of 6.8 g, is placed in a 4.0 L otherwise empty container at 23°C. a) What is the pressure in the container after all the carbon dioxide vaporizes? b)If 6.8 g solid carbon dioxide were placed in the same

asked on February 9, 2012
70. Georgia State History

Which of the following does not describe part of the Intolerable Acts? Boston's port was closed. There was a tax on molasses. There were limited town meetings. Colonists had to quarter British soldiers in their homes. ** Even if my answer is wrong, can you

asked on October 5, 2015
71. Biology

Suppose that the concentration of H+ in Solution #1 is 10,000 times greater than in Solution #2. What can you conclude about the difference in pH of these two solutions?

asked on September 2, 2019
72. Chemistry

Show how you would calculate the % yield of hydrogen if 40.0 grams of magnesium react with an excess of nitric acid producing 1.70 grams of hydrogen gas. Mg + 2 HNO3 ---> Mg(NO3)2 + H2

asked on March 30, 2016
73. Physics

The power radiated by the sun is 3.90 1026 W. The earth orbits the sun in a nearly circular orbit of radius 1.50 1011 m. The earth's axis of rotation is tilted by 27° relative to the plane of the orbit (see the drawing), so sunlight does not strike the

asked on March 26, 2013
74. Chemistry

At 2200°C, K = 0.050 for the following reaction. N2(g) + O2(g) 2 NO(g) What is the partial pressure of NO in equilibrium with N2 and O2 that were placed in a flask at initial pressures of 0.81 atm and 0.20 atm, respectively

asked on February 20, 2012
75. Physics

Your ear is capable of differentiating sounds that arrive at the ear just 1.00 ms apart. What is the minimum distance between two speakers that produce sounds that arrive at noticeably different times on a day when the speed of sound is 340 m/s?

asked on July 20, 2016
76. Statistics

A sample of 106 body temperatures resulted in a mean of 98.2 degrees and a standard deviation of .62 degrees. Use these sample statistics to construct a 98% confidence interval estimate of the standard deviation of body temperature of all healthy humans.

asked on July 20, 2015
77. College Chemistry

A buffer solution contains 0.120M acetic acid and 0.150M sodium acetate. a. How many moles of acetic acid and sodium acetate are present in 50.0 ml of solution? b. if we add 5.55 mL of 0.092M NaOH to the solution in part (a) how many moles of acetic acid ,

asked on November 10, 2010
78. Math

A ferris wheel is 30 meters in diameter and boarded in the six o'clock position from a platform that is 10 meters above the ground. The wheel completes one full revolution every 10 minutes. At the initial time t=0 you are in the twelve o'clock

asked on December 10, 2012
79. Lo

Discuss three contributing factor that led to xenophobia

asked on April 16, 2019
80. Physics

A 15.0-kg block rests on a horizontal table and is attached to one end of a massless, horizontal spring. By pulling horizontally on the other end of the spring, someone causes the block to accelerate uniformly and reach a speed of 5.00 m/s in 0.460 s. In

asked on November 30, 2012
81. Science

How did Darwin and Lamarck differ in their thinking about change in species? Darwin thought that organisms could induce their own changes, while Lamarck thought that change could only be induced by an organism’s environment. Darwin thought that change

asked on May 14, 2015
82. social studies

Why did the rise of nation-states have an impact upon exploration beyond Western Europe?

asked on June 28, 2019
83. Physics

Two billiard balls with identical masses and sliding in opposite directions have an elastic head-on collision. Before the collision, each ball has a speed of 20 cm/s. Find the speed of each billiard ball immediately after the collision.

asked on April 20, 2011
84. physics

What is the distance the lower spring is extended from its unstretched length? three masses (m1 = 3.1 kg, m2 = 9.3 kg and m3 = 6.2) hang from three identical springs in a motionless elevator. The springs all have the same spring constant given above. Now

asked on October 13, 2018
85. physics

A sports car of mass 950 kg (including the driver) crosses the rounded top of a hill (r = 88 m) at 27 m/s. Determine the normal force exerted by the road on the car. Determine the normal force exerted by the car on the 72-kg driver. Express your answer

asked on October 11, 2010
86. Algebra

A baseball player hits a baseball into the air with an initial vertical velocity of 48 feet per second from a height of 3 feet. 8. Write an equation that gives the baseball’s height as a function of the time (in seconds) after it is hit. 9. After how

asked on March 31, 2013
87. Physics

How long does it take light traveling from the sun at 3.0 x 10^8 m/s to reach Jupiter, which is 780 x 10^6 km away?

asked on January 31, 2012
88. Life orientation

The contribution factors that lead to xenophobia attacks?

asked on April 11, 2019
89. Chemistry

For the reaction below at a certain temperature, it is found that the equilibrium concentrations in a 5.00 L rigid container are [H2] = 0.0500 M, [F2] = 0.0100 M, and [HF] = 0.400 M. If 0.340 mol of F2 is added to this equilibrium mixture, calculate the

asked on February 20, 2012
90. Chemistry

A piece of solid carbon dioxide, with a mass of 6.8 g, is placed in a 4.0 L otherwise empty container at 23°C. a) What is the pressure in the container after all the carbon dioxide vaporizes? b)If 6.8 g solid carbon dioxide were placed in the same

asked on February 9, 2012
91. chemistry

a 500ml sample of oxygen gas at 24 degree celsius was prepared by decomposing a 3% aqueous soution of hydrogen peroxide in the presence of manganese catalyst by the reaction: 2h2o2 = 2 h20 + o2... the oxygen was colletec by displacement of water. the total

asked on July 10, 2011
92. Math

Victoria has a 2-pound package of flour. She uses 2/5 of the flour to make bread. Find the weight of the package of flour that she has left. Express your answer as a decimal.

asked on December 21, 2016
93. AP Chemistry

Equal masses of Ne and Ar are placed in a rigid, sealed container. If the total pressure in the container is 1.2 atm, what is the partial pressure of Ar?

asked on November 6, 2013
94. Chemistry

The equilibrium constant Kp for the reaction below at 700°C is 0.76 atm. CCl4(g) C(s) + 2 Cl2(g) Determine the initial pressure of carbon tetrachloride that will produce a total equilibrium pressure of 1.20 atm at 700°C

asked on February 20, 2012
95. math

A physics test has twenty questions worth 100 points. The test consists of true /false questions worth 3 points each and multiple choice questions worth 11 points each. How many multiple choice questions are on the test ?

asked on March 17, 2016
96. Chemistry

Write a balanced chemical equation for nitrogen gas reacts with oxygen gas to produce nitrogen dioxide gas

asked on March 29, 2010
97. social studies

What modern-day nations constitute the Senegambia region today? On Wikipedia it says, "The region encompasses the modern states of Senegal, The Gambia, and Guinea-Bissau, as well as portions of Mauritania, Mali, and Guinea." However, I was told to not

asked on June 22, 2019
98. algebra

the area of a pizza is 220 square centimeters. what is the radius

asked on January 7, 2009
99. Health

if you catch a cold which component of blood do you rely on to help attack the virus that has invaded your blood stream

asked on January 13, 2015
100. Geometry

The surface areas of two similar figures are given. The volume of the largwe figure is given. Find the volume of the smaller figure if the SA= 25 cm SA= 36cm and the V= 216cm?

asked on March 22, 2011