Popular questions and responses by Sarah
  1. Language Arts

    In the multi-draft reading process what does a reader look for in the third reading? *This is a question from Connexus, and I really need help D:

    asked on April 9, 2015
  2. Drama

    In act 1 scene 2 of a christmas carol scrooge and marley, why does scrooge object to people enjoying christmas?

    asked on April 13, 2015
  3. english

    Which of the following is the best definition of a drama? a. a story with props b. a story with a happy ending c. a story written to be preformed by actors d. a story in which the main character eventually fails I think it's D, can anyone check me? Thanks

    asked on April 11, 2015
  4. Physics

    A 1000 kg car pushes a 2000 kg truck that has a dead battery. When the drive steps on the accelerator, the drive wheels of the car push against the ground with a force of 4500 N. a) What is the magnitude of the force of the car on the truck? b) what is the

    asked on June 12, 2010
  5. Physics

    A grasshopper leaps into the air from the edge of a cliff at a 50 degree angle. He reaches a maximum height 6.74 cm above the top of the cliff and travels a total horizontal distance of 1.06 m. How tall is the cliff and what is the initial speed of the

    asked on June 12, 2015
  6. Chemistry

    Identify the products formed in this Brønsted-Lowry reaction. HPO2−4+HBrO↽−−⇀acid+base Acid: Base:

    asked on July 30, 2019
  7. physics

    What is the tension in the rope of this figure description? 60 kg person is hanging in the air on a rope attached to a pulley, with a 100 kg mass attached on other end that is touching the ground.

    asked on June 13, 2010
  8. Math -- Algebra

    Why Are Mr. and Mrs. Number so Happy?

    asked on April 22, 2008
  9. artist

    1. The artwork pictured here best represents which message? a) Ideas and creativity can be shown with many different tools. b) It is important to use one type of tool because you understand how to use it. c) People can be limited by their ideas. d)

    asked on October 30, 2014
  10. Civics

    2. One main difference between the United States Constitution and state constitutions is that state constitutions A. are much longer. B. don't provide for a legislature. C. can't be amended. D. don't have bills of rights. So your saying it's D? (Reed)

    asked on March 29, 2015
  11. Physics

    The four tires of an automobile are inflated to an absolute pressure of 2.0*10^5 Pa. Each tire has an area of 0.024m^2 in contact with the ground. Determine the weight of the automobile. Pressure*area= force. There are four tires.

    asked on May 10, 2007
  12. Physics

    In the figure, a chain consisting of five links, each of mass 0.100 kg, is lifted vertically with constant acceleration of magnitude a = 2.50 m/s2. Find the magnitudes of (a) the force on link 1 from link 2, (b) the force on link 2 from link 3, (c) the

    asked on March 19, 2011
  13. Physics

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

    asked on October 6, 2013
  14. Physics

    A potter’s wheel with rotational inertia of 45 kg m2, is spinning freely at 40 rpm. The potter drops a lump of clay onto the wheel where it sticks a distance 1.2 m from the rotational axis at the wheel’s center. If the subsequent angular speed of the

    asked on June 29, 2009
  15. Physics

    a model of a helicopter rotor has four blades, each 3.40 m in length from the central shaft to the tip of the blade. The model is rotated in a wind tunnel at 550 rev/min. A) what is the linear speed, in m/s of the blade tip? B.) what is the radial

    asked on June 7, 2009
  16. Economics

    Questions: Are the following workers more likely to experience short-term or long-term unemployment? Explain. a. A construction worker laid off because of bad weather. b. A manufacturing worker who loses her job at a plant in an isolated area. c. A

    asked on March 24, 2007
  17. physics

    It is possible to shoot an arrow at a speed as high as 100 m/s. (a) If friction is neglected, how high would an arrow launched at this speed rise if shot straight up? (b) How long would the arrow be in the air? Please help! I do not have any clue as to how

    asked on June 7, 2010
  18. Partial Pressure- Chemistry

    A gaseous mixture of O2 and N2 contains 31.8 % nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 445 mmHg?

    asked on September 23, 2008
  19. chem

    A voltaic cell consists of a strip of cadmium metal in a solution of Cd(NO3)2 in one beaker, and in the other beaker a platinum electrode is immersed in a NaCl solution, with Cl2 gas bubbled around the electrode. A salt bridge connects the two beakers.

    asked on April 13, 2013
  20. Chemistry Help

    What is the ionic equation for: 2 HClO4(aq) + Mg(OH)2(s) ¨ Mg(ClO4)2(aq) + 2 H2O(l)

    asked on December 18, 2010
  21. Career Explorations

    PLEASE CHECK MY ANSWERS! 1. What previous work experience would a fire inspector be expected to have? A. police officer B. security guard C. fire fighter D. chemist ** 2. Which of the following is an example of a career in public safety? A. attorney B.

    asked on March 7, 2019
  22. college physics

    three carts of masses 4.0kg, 10kg, and 3.0kg move on a frictionless horizontal track with speeds of 5.0m/s, 3.0m/s, and 4.0m/s. The carts stick together after colliding. find the velocity of the three carts.

    asked on June 1, 2008
  23. Physics

    Two dogs pull horizontally on ropes attached to a post; the angle problem 1 between the ropes is 60.0 degrees. If dog A exerts a force of 270N and dog B exerts a force of 300N find the magnitude of the resultant force and the angle it makes with dog A's

    asked on June 8, 2009
  24. Physics

    A bowling ball weighing 71.2 N is attached to the ceiling by a 3.80 m rope. The ball is pulled to one side and released; it then swings back and forth like a pedulum. as the rope swings through its lowest point, the speed of the bowling ball is measured at

    asked on June 15, 2009
  25. physics

    A certain orthodontist uses a wire brace to align a patient's crooked tooth as in the figure below. The tension in the wire is adjusted to have a magnitude of 21.12 N. Find the magnitude of the net force exerted by the wire on the crooked tooth.

    asked on October 5, 2011
  26. Chemistry

    Write the balanced chemical equation for each of these reactions. Include phases. When aqueous sodium hydroxide is added to a solution containing lead(II) nitrate, a solid precipitate forms. However, when additional aqueous hydroxide is added the

    asked on May 11, 2012

    Suppose the moon rotated on its axis just as quickly as Earth. Would you still always see the same side of the moon from Earth? *HELP ME PLEASE*

    asked on January 8, 2014
  28. Calculus

    A landscape architect wished to enclose a rectangular garden on one side by a brick wall costing $60/ft and on the other three sides by a metal fence costing $50/ft. If the area of the garden is 102 square feet, find the dimensions of the garden that

    asked on April 9, 2016
  29. phyics

    Cheryl is riding on the edge of a merry-go-round, 2m from the center, which is rotating with an increasing angular speed. Cheryl’s tangential acceleration is 3.0m/s2. At the instant that Cheryl’s linear speed is 4.0m/s, what is Cheryl’s total

    asked on November 29, 2015
  30. Math(problem solving)

    Four darts are thrown at this dartboard. If all four darts hit the board, how many different point totals are possible? there are 4 circles with point totals: working out from the middle bulls eye.. bulls eye = 9 2nd circle = 7 3rd circle = 4 outter circle

    asked on March 6, 2013
  31. biology

    Which best describes Francis Bacon’s contribution to the Scientific Revolution?

    asked on February 27, 2018
  32. History

    Which battle was a major turning point for US and South Korean forces during the Korean War? a. Battle of Pork Chop Hill b. Spring Offensive c. Battle of Heartbreak Ridge d. Inchon Bay landing Is it D?

    asked on August 20, 2018
  33. Physics

    A 200 g mass attached to a horizontal spring oscillates at a frequency of 2 Hz. At one instant the mass is at x=5 cm and has a Vx=-30 cm/s.Determine: a) the period ( i got T=.5s) b) the amplitude c) the max speed d) the total energy need equations to solve

    asked on July 7, 2010
  34. World Geography

    Imagine you are an elected official with the responsibility of drafting legislation designed to protect our environment. What items will you include in your bill? Who will be responsible for the bill's implementation? Its enforcement? Your response should

    asked on March 6, 2014
  35. Math

    A conical water tank with vertex down has a radius of 10 feet at the top and is 22 feet high. If water flows into the tank at a rate of 30 {\rm ft}^3{\rm /min}, how fast is the depth of the water increasing when the water is 14 feet deep? I have tried

    asked on October 5, 2014
  36. Economics

    Suppose that the residents of Vegopia spend all of their income on cauliflower, broccoli, and carrots. In 2006 they buy 100 heads of cauliflower for $200, 50 bunches of broccoli for $75, and 500 carrots for $50. In 2007, they buy 75 heads of cauliflower

    asked on April 2, 2007
  37. chem

    3 Ce4+(aq) + Cr(s) ¨ 3 Ce3+(aq) + Cr3+(aq) What is the emf of this cell when [Ce4+] = 2.9 M, [Ce3+] = 0.11 M, and [Cr3+] = 0.015 M?

    asked on April 16, 2013
  38. MSU

    aluminum sulfate and sodium phosphate Express your answer as chemical equation.

    asked on October 6, 2011
  39. Math to Ms.Sue (urgent )

    11. Lorenzo has a checkbook balance of $118.00. He writes two checks, one for $9.00 and one for $84.25. He then deposits $95.00. Finally, he uses his calculator to determine his new balance. Which one of the following series represents the correct order in

    asked on January 16, 2015
  40. Physics

    A giant swing at a county fair consists of a vertical central shaft with a number of horizontal arms attahed at its upper end. Each arm supports a seat suspended from a 5.00 m long rod, the upper end of which is fastened to the arm at a point 3.00 m from

    asked on June 15, 2009
  41. Chemistry

    Aqueous solutions of copper (II) sulfate, CuSO4, and potassium carbonate, K2CO3, a blue parcipitate of copper (II) carbonate forms in addition to one other compound. We have to write the balanced chemical equation for that but our teacher didn't teach us

    asked on September 24, 2016
  42. math 3rd grade

    How can you use 4x7 to find 8x7? find the product. I don't understand this how can i expect my 3rd grader to understand.

    asked on November 26, 2012
  43. Physics

    a 65-kg ice skater moving to the right with a velocity of 2.50m/s throws a .150kg snowball to the right with a velocity of 32.0m/s relative to the ground a) what is the velocity of the ice skater after throwing the snowball? b) a second skater initially at

    asked on April 26, 2012
  44. Chemistry

    Commercial vinegar was titrated with NaOH solution to determine the content of acetic acid, HC2H3O2. For 20.0 milliliters of the vinegar 26.7 milliliters of 0.600-molar NaOH solution was required. What was the concentration of acetic acid in the vinegar if

    asked on May 23, 2007
  45. chemistry

    Phosphorus pentachloride decomposes according to the chemical equation PCl5(g) -----> PCl3 (g)+ Cl2(g) Kc= 1.80 at 250 degrees C A 0.463 mol sample of PCl5(g) is injected into an empty 4.80 L reaction vessel held at 250 °C. Calculate the concentrations of

    asked on March 9, 2012
  46. Math

    What happens to the man who carries an ax in his teeth?

    asked on November 4, 2008
  47. chemistry

    A voltaic cell that uses the reaction Tl3+(aq) + 2 Cr2+(s) ¨ Tl+(aq) + 2 Cr3+(aq) has a measured standard cell potential of +1.19 V. determine E‹red for the reduction of Tl3+(aq) to Tl+(aq).

    asked on April 14, 2013
  48. Civics

    8. Which one of the following provisions was part of the first draft of the Articles of Confederation submitted to the Second Continental Congress? A. Appointment of George Washington as commander of the Continental Army B. Limited and restricted functions

    asked on March 10, 2015
  49. Calc

    If y=tanu, u=v-(1/v), and v=lnx. What is the value of dy/dx at x=e?

    asked on December 6, 2016
  50. Chemistry

    Ionization energy is defined as the minimum energy required to remove an electron from the ground state (n0) to infinity (n∞). Determine the wavelength of radiation required to ionize the hydrogen electron from the n = 2 energy level. Calculate the

    asked on October 26, 2009
  51. Math

    A number cube is rolled 160 times. The number 2 comes up 39 times. what is the experimental probability of rolling a 2? What is the theoretical probability of rolling a 2? A. 39/160 ; 1/80 b. 1/6 ; 39/160 C. 39/160 ; 1/6 D. 121/160; 1/6 My answer is B. Is

    asked on April 29, 2015
  52. math

    6. You are given a sheet of cardboard that is 8.0 in. x 11.0 in. How many full circles with a diameter of 3.0 inches can you cut from the cardboard? What is the percentage of waste if the

    asked on January 17, 2017

    Consider the freight train. Suppose 15 boxcars pass by in a time of 14.0 s and each has a length of 14.0 m. (a) What is the frequency at which each boxcar passes? (b) What is the speed of the train?

    asked on February 8, 2011

    Two bulbs are connected in parallel across a source of emf EMF = 10.0V with a negligible internal resistance. One bulb has a resistance of 3.0 Omega , and the other is 2.5 Omega . A resistor R is connected in the circuit in series with the two bulbs. What

    asked on August 23, 2012
  55. Chemistry

    Nitric oxide (NO) reacts with molecular oxygen as follows: 2NO(g) + O2(g) ¨ 2NO2(g) Initially NO and O2 are separated as shown below. When the valve is opened, the reaction quickly goes to completion. Determine what gases remain at the end of the

    asked on October 31, 2010
  56. chemistry

    draw the skeletal structure line-angle (line-bond) mode of 2-isopropyltoluene. Identify the number of hydrogen atoms bound to each carbon in the structure.

    asked on October 13, 2016
  57. english

    Put parentheses around the adverb clause by placing the parentheses in their correct locations. He will not come unless you invite him.

    asked on March 30, 2016
  58. Physics

    A tennis player hits a ball at ground level, giving it an initial velocity of 24 m/s at 57 degrees above the horizontal. (a) what are the horizontal and verticla components of the ball;s initial velocity? (b) how high above the ground does the ball go? (c)

    asked on June 7, 2009
  59. English

    Choose the meaning of the bolded vocabulary word in each passage in the next six questions. I can't bold them so the word will be in caps. Check my answers * = My answer 1. "Once, the listener fancied that he could DISTINGUISH the accent of town's people

    asked on November 3, 2016
  60. chemistry

    The mole fraction of neon in the air is about .0000026. If the average molar mass of air is 28.96 g/mol, what is the concentration of neon in air in ppm? How do you set this up?

    asked on November 2, 2014
  61. Chemistry

    The reaction of aqueous sodium bromide and aqueous lead(II) nitrate is represented by the balanced net ionic equation. 2Br-(aq) + Pb2+(aq) → PbBr2(s) Give the balanced ionic equation for the reaction. Include the states.

    asked on January 29, 2010
  62. math

    In a certain town, 25% of people commute to work by bicycle. If a person is selected randomly from the town, what are the odds against selecting someone who commutes by bibycle? A). 3:1 B). 3:4 C). 1:3 D). 4:1

    asked on September 18, 2010
  63. Physics

    A diver leaves a 3-m board on a trajectory that takes her 2.8m above the board and then into the water 2.7m horizontally from the end of the board.At what speed and angle did she leave the board?

    asked on March 26, 2015
  64. History

    Which accurately describe the causes of the contentious relationship between President Truman and General MacArthur? (Select all that apply.) a. Truman favored a containment policy on Communism, while MacArthur wanted to pursue the Communist forces into

    asked on August 20, 2018
  65. Physics

    When a driver applies brakes to keep a car going downhill at constant speed and constant kinetic energy, the potential energy of the car decreases. Where does this energy go? Where does most of it appear in a hybrid vehicle?

    asked on January 2, 2011
  66. Physics

    A Chinook salmon can jump out of water with a speed of 6.60 m/s . How far horizontally d can a Chinook salmon travel through the air if it leaves the water with an initial angle of θ=27.0° with respect to the horizontal? (Let the horizontal direction the

    asked on September 6, 2018
  67. Physics

    The drawing shows a positive point charge +q1, a second point charge q2 that may be positive or negative, and a spot labeled P, all on the same straight line. The distance d between the two charges is the same as the distance between q1 and the spot P.

    asked on September 6, 2013
  68. Civics

    1. A basic position in American foreign policy has been that America must defend its foreign interests related to trade and security. The main foreign policy position opposed to this American policy is called A. imperialism. B. militarism. C. isolationism.

    asked on April 21, 2015
  69. Chemistry

    If you weigh out 2.083 g Fe(NO3)3·9H2O, what is the final concentration of the dilute Fe(NO3)3 solution that you make?

    asked on June 27, 2013
  70. science

    Suppose you are hiking along a trail. Make a comparison between your displacement and your distance traveled. Check all that apply. -Your displacement must be less than your distance traveled. -Your displacement must be greater than your distance traveled.

    asked on September 12, 2015
  71. Physics

    A curling stone with a mass of 18 kg slides 38m across a sheet of ice in 8.0 s before it stops because of friction. What is the co¨efficient of kinetic friction between the ice and the stone? (Note: you will need to calculate the acceleration of the stone

    asked on October 29, 2015
  72. physics

    A car travels between the 100 meter and 250 meter highway markers in 10 second. The average speed of the car during this interval is...

    asked on March 13, 2011

    A 200g block slides back and forth on a frictionless surface between two springs, as shown. The left-hand spring has k = 130 N/m and its maximum compression is 16cm. The right-hand spring has k = 280 N/m. Find (a) the maximum compression of the right-hand

    asked on February 12, 2014
  74. Chemistry

    If the literature value for the ΔHfus of water is 6.01 kJ/mol, how many kJ of heat energy would be required to completely melt 130 g of ice at 0°C?

    asked on April 16, 2012
  75. Literature

    What are some of the poetic devices used in this poem by Gladys Cardiff? -diction -end-stopped -lyric -symbol -syntax Bending, I bow my head And lay my hand upon Her hair, combing, and think How women do this for Each other. My daughter's hair Curls

    asked on January 12, 2011
  76. Chemistry

    Using a 0.25 M phosphate buffer with a pH of 6.6, you add 0.71 mL of 0.51 M HCl to 49 mL of the buffer. What is the new pH of the solution? (Enter your answer to three significant figures.) Using a 0.25 M phosphate buffer with a pH of 6.6, you add 0.71 mL

    asked on March 6, 2019

    Calculate the change in entropy that occurs when 17.68 g of ice at -12.7°C is placed in 54.05 g of water at 100.0°C in a perfectly insulated vessel. Assume that the molar heat capacities for H2O(s) and H2O(l) are 37.5 J K-1 mol-1 and 75.3 J K-1 mol-1,

    asked on October 23, 2012
  78. Chemistry

    Calculate the energy (in kJ/mol) required to remove the electron in the ground state for each of the following one-electron species using the Bohr model. (a) He+ kJ/mol (b) Li2+ kJ/mol

    asked on January 24, 2012
  79. Math

    I need help with this I keep putting the numbers in wrong on the formula ! PLEASE HELP Price of article = $315.50 Down payment = $31.55 Monthly payment amount = $16.50 Duration of payments = 20 months True annual interest rate to the nearest tenth = %

    asked on June 24, 2013
  80. Science

    When evolution was first proposed, which of the following was used as evidence to support the idea? 1.observations of nature 2.laboratory experiments 3.extensive fossil collections 4.genetic sequences 1.?

    asked on April 20, 2015
  81. Pre-calculus

    Complete the table assuming continuously compounded interest. (Round your answers to two decimal places.) Initial Investment: Annual % Rate: Time to Double: 8 yr Amount After 10 Years: $1700 I don't understand how to get in the initial investment of annual

    asked on October 11, 2015
  82. Economics

    advantages and disadvantages of allocating resources through the public sector

    asked on January 30, 2010
  83. Calculus!!!

    Find f. (Use C for the constant of the first antiderivative and D for the constant of the second antiderivative.) f ''(x) = 8 + x3 + x5

    asked on November 7, 2013
  84. Chemistry

    Write a net ionic equation for the reaction that occurs when excess hydrobromic acid (aq) and sodium sulfide are combined.

    asked on September 24, 2017
  85. Enthalypy Reaction

    What is the standard enthalpy of reaction for the following chemical reaction? CO2(g) + 2KOH(s) --> H2O(g) + K2CO3 (s) Express your answers numerically in kJ.

    asked on September 23, 2008
  86. physics

    A compact car, mass 730 kg, is moving at 1.00 ✕ 102 km/h toward the east. The driver of the compact car suddenly applies the brakes hard for 1.9 s. As a result, an average force of 4.8 ✕ 103 N is exerted on the car to slow it down. What is the momentum

    asked on October 26, 2014

    A 1.0 kg metal head of a geology hammer strikes a solid rock with a velocity of 5.0 m/s. Assuming all the energy is retained by the hammer head, how much will its temperature increase?

    asked on November 2, 2007

    The linearization at a=0 to sqrt(6+6x) is A+Bx where A is:_____ and where B is:_____

    asked on May 19, 2012
  89. Chemistry

    Automotive airbags inflate when sodium azide, NaN3, rapidly decomposes to its constituent elements according to the chemical equation, 2 NaN3 -> 2 Na + 3 N2. How many grams of nitrogen are produced when 1000 milligrams of sodium azide decomposes?

    asked on November 25, 2015
  90. Chem

    Consider the following balanced equation: 2N2H4(g)+N2O4(g)→3N2(g)+4H2O(g) Complete the following table showing the appropriate number of moles of reactants and products. If the number of moles of a reactant is provided, fill in the required amount of the

    asked on April 27, 2016
  91. English

    Read the following lines from "An Arab Shepherd Is Searching for His Goat on Mount Zion." Searching for a goat or a son has always been in the beginning of a new religion in these mountains Which of the following sentences best explains the meaning of

    asked on May 25, 2014
  92. Economics

    7. Suppose there are two possible income distributions in a society of ten people. In the first distribution, nine people have incomes of $30,000 and one person has an income of $10,000. In the second distribution, all ten people have incomes of $25,000.

    asked on March 8, 2007
  93. Math

    A brick patio has the approximate shape of a trapezoid. The patio has 16 rows of bricks. The first row has a = 13 bricks and the 16th row has b = 28 bricks. How many bricks are in the patio?

    asked on December 12, 2017
  94. Physics

    On a cloudless day, the sunlight that reaches the surface of the earth has an intensity of about 1.2 103 W/m2. What is the electromagnetic energy contained in 6.4 m3 of space just above the earth's surface?

    asked on October 28, 2013
  95. Language arts poetry

    in the poem the tide rises the tide falls Longfellow uses figurative language in repetition in a paragraph identify the symbolism and repetition used in the poem explain how both are connected to the meaning of the poem include details from the poem in

    asked on May 16, 2017
  96. physics

    Find the horizontal distance the skier travels before coming to rest if the incline also has a coefficient of kinetic friction equal to 0.23. (The incline makes an angle θ = 20.0° with the horizontal.)

    asked on May 27, 2011
  97. English

    4. Which one of these sentences contains a prepositional phrase? A. Trolls live under bridges; elves do not. B. Where did you find the papers that I lost? C. You may think otherwise, but what I tell you is true. D. To be, or not to be: that is the

    asked on November 20, 2014
  98. Calculus

    If tanh(x)=24/25, find the values of the other hyperbolic function at x I was able to find coth(x)=25/24, but what is sin, cos, csc, and sec? I would greatly appreciate your help!!

    asked on May 24, 2010
  99. Physics

    In the rectangle in the drawing, a charge is to be placed at the empty corner to make the net force on the charge at corner A point along the vertical direction. What charge (magnitude and algebraic sign) must be placed at the empty corner? (the rectangle

    asked on September 8, 2013
  100. Chemistry

    The thermal decomposition of 1.6608 g of MgSO4 * H2O produces 1.4446 g of a product in a well-behaved reaction. There are two possibilities: 1) MgSO4 * H2O(s) -> MgSO4(s) + H2O(g) 2) MgSO4 * H2O(s) -> MgO(s) + SO3(g) + H2O(g) Complete the following table,

    asked on February 10, 2018


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