1. calc

    Consider the function below. (Round the answers to two decimal places. f(x) = 2x tan(x) -p/2 < x < p/2 (a) Find the interval where the function is increasing. Find the interval where the function is decreasing. (b) Find the local minimum value. (c) Find

    asked by bella on April 4, 2010
  2. Physics

    A mass of 4.77 kg of chilled water at 0C is placed in a freezer which is kept at −19.2C. Approximately how much electric energy is needed to operate the compressor to cool this water to −19.2 C if the room temperature is maintained at 24.2C? The

    asked by physicshelp on January 13, 2013
  3. Physics

    Two horizontal forces Upper F1 Baseline and F2 act on a 3.6 kg disk that slides over frictionless ice, on which an xy coordinate system is laid out. Force F1 is in the positive x direction and has a magnitude of 7.1 N. Force F2 has a magnitude of 9.3 N.

    asked by patrick on March 15, 2015
  4. Physics B

    A 89.2 kg ice skater, moving at 16.1 m/s, crashes into a stationary skater of equal mass. After the collision, the two skaters move as a unit at 8.05 m/s. Suppose the average force a skater can experience without breaking a bone is 4296 N. If the impact

    asked by Mary on November 12, 2012
  5. Chemistry

    A sample of air was passed through an electrical discharge causing the following reaction N2(g) + O2(g)->2NO(g) . Assuming that 1.00 mole of air (78% N2, 21% O2) was originally present at 1.00 atm, determine the partial pressure (in atm) of NO at

    asked by Anonymous on November 25, 2015
  6. physics

    At the end of the semester, you are loading your gear into a van to go home. In loading the van, you can either lift a 45.0-kg crate straight up(method 1) or push it up a 3.00-m-long ramp that is inclined at an angle above the horizontal (method 2).In both

    asked by ajo on December 9, 2007
  7. Physics

    what is the final temperature of mixture, if 100gm of ice at 0 degree celcius into 100gm of water at 20 degree celcius in an iron vessel of mass 100gm.(specific heat of iron=0.1)

    asked by Manish on February 2, 2013
  8. Chemistry

    The solubility of a certain compound in ice-cold water is 0.22g in 100mL. Its solubility in hot water is 4.35g in 100mL What is the best possible percent recovery we can expect for the re-crystallization of this compound in water?

    asked by tom on September 29, 2011
  9. Algebra/Geometry

    I am eating a snow cone in a paper cone with a height of 21cm and the radius of my snow cone ice is 3.25 cm. Find the amount of material needed to make my paper snow cone

    asked by Angelita Marie on April 11, 2008
  10. Algebra 2

    Evan spent the summer earning money so he could buy the classics car of his dreams. He purchased the car for $2,295 from Fast Deal Freddie, the local used car salesman. Freddie told Evan that the car would increase by half its value after five years. Evan

    asked by Anonymous on January 25, 2012
  11. physics

    You have designed a rocket to be used to sample the local atmosphere for pollution. It is fired vertically with a constant upward acceleration of 17 m/s2. After 20 s, the engine shuts off and the rocket continues rising (in freefall) for a while. (Neglect

    asked by Danielle on August 9, 2014
  12. Spanish

    What are schools and organizations in silicon valley doing to foster growth for hispanic and latino students? a. Offering math programs in the summer b. Offering english classes year round C.offering tutoring classes in science during the weekends d.

    asked by Girltt on May 18, 2016
  13. English/Reading

    (Paragraph 4)Into this environment stepped a very determined woman. Francis Gabe hated housework. She said, "Housework is a thankless, unending job, a nerve tangling-bore. Who wants it? Nobody! With my jaw set hard, I was determined there had to be a

    asked by MIW4LIFE on October 8, 2015
  14. Philosophy

    Please help answer these questions Argument: Anything is possible Therefore, it must be possible that something is impossible This is a contraction - Not everything is possible because anything is possible. Types of appeals in arguments (Aristotle) Pathos

    asked by Justin on May 16, 2012
  15. Chemistry

    1)A buffer solution that is 0.10 M sodium acetate and 0.20 M acetic acid is prepared. Calculate the initial pH of this solution. The Ka for CH3COOH is 1.8 x 10-5 M. As usual, report pH to 2 decimal places. *A buffered solution resists a change in pH.*

    asked by JUNDY on March 10, 2015
  16. Statistics

    1.A sample of 25 bottles is taken from the production line at a local bottling plant. Assume that the fill amounts follow a normal distribution. The probability is 90% that the sample variance is less than what percent of the population variance? 2. The

    asked by abidjan on December 3, 2014
  17. English

    Hello. I've already asked this question but I'd like to clarify if the sentence "Suggest your local radio stations play our songs" sounds normal natural English (it's a command, meaning "offer our songs to radio stations", "take them to radio stations".

    asked by Ilma on April 13, 2011
  18. Calculus

    Find the range of y = (3x-1)/(2x^2 + x - 6) I was going to take the derivative of the numerator and denomenator and then use the quotent rule to find the derivative of the function and find the critical values but I ran into the imaginary number during the

    asked by Kate on July 25, 2010
  19. Pharmacist

    Could you please give me links to where I can find out about Pharmacists. Powerpoints would be good. This is what I need, since Im doing a career Research project on this. Job duties/Responsibilities Education/Training Requirements Demographics (where can

    asked by Anonymous on April 21, 2011
  20. math help pls pls pls

    Tablets are on sale for 15% off the original price (t), which can be expressed with the function p(t) = 0.85t. Local taxes are an additional 8% of the discounted price (p), which can be expressed with the function c(p) = 1.08p. Using this information,

    asked by Oscar on March 4, 2016
  21. math

    A local road has a grade of 15%. The grade of a road is its slope expressed as a percent. a.Find the slope of the road as a fraction and then simplify the fraction.

    asked by Laisha on October 12, 2018
  22. chemistry

    Which of the following best describes the heat engine? A. A heat engine works through the conversion of energy in the form of heat to mechanical work. B. A heat engine works through the conversion of energy in the form of heat to chemical work. C. A heat

    asked by Anonymous on December 13, 2012
  23. Poetry

    I am supposed to give a literal explanation of this poem, but I am really confused by it. Your help will be much appreciated. Snow & Ice by Quincy Troupe ice sheets sweep this slick mirrored dark place space as keys that turn in tight, trigger pain of

    asked by Tracey on April 13, 2007
  24. physics

    You pick up a 3.2 kg can of paint from the ground and lift it to a height of 1.4 m . Part A How much work do you do on the can of paint? Express your answer to two significant figures and include the appropriate units. Part B You hold the can stationary

    asked by ... on October 24, 2016
  25. physics

    A typical car under hard braking loses speed at a rate of about 6 m/s2. The typical reaction time to engage the brakes is 0.50 s. A local school board sets the speed limit in a school zone such that all cars should be able to stop in 5.0 m. What maximum

    asked by Nidhi on January 30, 2017
  26. Heeeeeeeelp

    Read the following instructions in order to complete this assignment and review the example of how to complete the math required for this assignment: Use the properties of real numbers to simplify the following expressions: 2a(a – 5) + 4(a – 5) 2w –

    asked by Myya on September 15, 2013
  27. Math

    Larry mows the same-sized lawns in his neighborhood each weekend during the summer. Part A Each time Larry mows a lawn he uses 1/6 of a gallon of gasoline. If he has 2/3 of a gallon of gasoline, how many lawns can he mow before he needs to buy more

    asked by Anonymous on March 16, 2015
  28. art

    1.what is one characteristic on this student work a. creation of 3-D art b. creation of cubist art c. exact representation of human proportion**** 2. to create a portfolio of work this artist would do all the following except? a .include more drawings of

    asked by Melanie on December 3, 2018
  29. physics

    An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and slows it down. The asteroid has a mass of 4.9 × 104 kg, and the force causes its speed to change from 7600 to 5400 m/s. (a) What is the work done by the

    asked by shaknocka on February 28, 2011
  30. physics- please check

    a. Two sticks are rubbed together to start a fire. b. A firecracker explodes. c. A red-hot iron bar is set aside to cool. In which of the situations listed above is energy being transferred as heat to the system in order for the system to do work? I would

    asked by Anonymous on February 4, 2007
  31. physics

    A skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 12 degrees with the horizontal. The rope moves parallel to the slope with a constant speed of 1.0 m/s. The force of the rope does 880 J of work on the skier as the skier

    asked by Anonymous on November 15, 2011
  32. Physics

    An ice skater, has a rotational inertia of I = 4 kg m2, and spins at 2 rad/sec. She then changes her rotational inertia to 2 kg m2. What is her final angular velocity? a. 4 rad/s b. 2 rad/s c. 2.8 rad/s d. 8 rad/s The answer must be A then right.

    asked by David on April 30, 2009
  33. Physics/Math

    What work is done by a force (in newtons) F = 3.1xi + 3.1j, with x in meters, that moves a particle from a position r1 = 2.1i + 2.5j to r2 = - -4.9i -3.9j? For Further Reading * Physics/Math - bobpursley, Thursday, March 1, 2007 at 6:27am Work is the dot

    asked by Technoboi11 on March 3, 2007
  34. 8th Grade Journalism

    Can somebody please confirm that I'm correct with the other answers? **Can somebody help me with the 2nd question please? Passive Voice to Active Voice Passive Voice---A college entrance exam was taken by nearly 100 students on Saturday. Results from the

    asked by Music Lover 14 on December 3, 2016
  35. criminal justice theories

    I have a scenerio of a 14 yr old boy from a poor family who shoplifts a mountain dew from a local convenience store. i have to comeup with a comprehensive, clear, and well-constructed response of the theory of the biological explanation for his actions and

    asked by deonna on January 19, 2007
  36. Art

    Does "top up the phone" mean put money on your account? Can you give me an example, Writeacher? I need to include two or three more sentences on mobile phones, Writeacher. Could you please help me? 1) Parents have to shoulder responsibility for their

    asked by Frank on May 5, 2012
  37. Math

    Johnsons accumulated a nest egg of $40,000 to use as down payment toward a new home. Present gross income has them in high tax bracket, decided to invest min $2400/month in payments (for tax break). Financial obligations cannot exceed $3000/month. If local

    asked by Sara on May 15, 2012
  38. Math

    Johnsons accumulated a nest egg of $40,000 to use as down payment toward a new home. Present gross income has them in high tax bracket, decided to invest min $2400/month in payments (for tax break). Financial obligations cannot exceed $3000/month. If local

    asked by Sara on May 15, 2012
  39. Math

    I'm after understanding more than an answer but an answer would be greatly appreciated. The question reads as "On the answer sheet for this question is shown an x-y graph of the function [y(x)=x^2cos(3x)] Add to that same picture a rough sketch of the

    asked by Jack on November 17, 2010
  40. Science

    A particular ecosystem in Georgia can support a maximum population of 100 bluebirds which of the following would allow hundred 20 bluebirds to live together in this ecosystem? (a. Human activity disrupting the nesting out of a predator hawk) (B. Flooding

    asked by Ruby :) on February 17, 2015
  41. AP biology

    I posted this question three days ago but no one answered. Hi you guys I am having trouble with the "cell communication" chapter so I would really appreaciate if someone could help out with this question "What could happen to the target cells in an animal

    asked by Claudia on December 6, 2007
  42. Maths

    I'm after understanding more than an answer but an answer would be greatly appreciated. The question reads as "On the answer sheet for this question is shown an x-y graph of the function [y(x)=x^2cos(3x)] Add to that same picture a rough sketch of the

    asked by Jack on November 16, 2010
  43. Language

    One particularly nice afternoon, several students were trapped in a classroom listening to a monotonous lecture by a professor the local college. After over two hours of mind-numbing discourse, one student stood up in despair and noted that she had a book

    asked by Megan on March 2, 2009
  44. Intro To Law

    Can someone please help me with my answers? 1. Most states do not hold strict laws related to the licensing of A- Attorneys B- Judges C- Counsel D- Paralegals** 2. A person who offers law-related advice without the appropriate licensing is committing A-

    asked by FMSLION on January 17, 2018
  45. Educational Assitant

    As an Educational Assistant you are leading a group converstation with 12 grade 4 students. They are having a discussion about the story that they have just read about a boy who has stolen a toy from a local corner store. The conversation has turned to the

    asked by Sally J Raphel on January 15, 2013
  46. Early Childhood Education Interpersonal Skills

    As an Educational Assistant you are leading a group converstation with 12 grade 4 students. They are having a discussion about the story that they have just read about a boy who has stolen a toy from a local corner store. The conversation has turned to the

    asked by Sally J Raphel on January 14, 2013
  47. physics

    Stuck in the middle of a frozen pond with only your physics book, you decide to put physics in action and throw the 6-kg book. If your mass is 54 kg and you throw the book at 14 m/s, how fast do you then slide across the ice? (Assume the absence of

    asked by Anonymous on February 22, 2011
  48. Physics

    an ice sled powered by a rocket engine starts from rest on a large frozen lake and accelerates at +13m/s^2. At t1, the rocket engine is shut down and the sled moves with constant velocity v until t2. The total distance traveled by the sled is 5.30*10^3 m

    asked by Anonymous on September 27, 2017
  49. chemisrty - ICE CHART DEPOSTION

    How do i fill out an ICE chart when i am only given an initial concentration of one reactants and an equilibrium of another reaction? inital 0.045 HNO2(aq) Equilibrium 0.0043 H3O+(aq) NO2(aq) - no information my first thought was to sqaure root .0043 mol/l

    asked by Tara on November 22, 2012
  50. Chemistry Help PLEASE!!

    I don't know how to do this question, I understand we have to use ICE but I keep getting the wrong answer when I solve for x, it's just not working for me. Consider the following reaction: A(g) -> 2B (g) Find the equilibrium partial pressures of A and B

    asked by Student on February 24, 2012
  51. Chemistry

    I'm supposed to do this for an organic chemistry prelab. I've read my books and tried Googling everything possible, but I still don't know how to set this up. Please help! The solubility of a certain compound in ice-cold water is 0.18g in 100 mL. Its

    asked by Katy on September 29, 2011
  52. science

    A copper calorimeter weighs 100g when empty, 400g when half full of water at 0 degrees Celsius, and 450g when ice at 0 degree Celsius is added. When some steam is passed into the mixture, its temperature is raised by 10 degrees Celsius. Find the quantity

    asked by agajere on February 3, 2017
  53. PHYSICS

    A dockworker applies a constant horizontal force of 71.0N to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves a distance 10.0m in a time of 5.50s . If the worker stops pushing after 5.50s

    asked by JADE on August 10, 2014
  54. chemisrty - ICE CHART DEPOSTION

    How do i fill out an ICE chart when i am only given an initial concentration of one reactants and an equilibrium of another reaction? inital 0.045 HNO2(aq) Equilibrium 0.0043 H3O+(aq) NO2(aq) - no information my first thought was to sqaure root .0043 mol/l

    asked by Tara on November 22, 2012
  55. Physics

    Stuck in the middle of a frozen pond with only your physics book, you decide to put physics in action and throw the 9-kg book. If your mass is 45 kg and you throw the book at 10 m/s, how fast do you then slide across the ice? (Assume the absence of

    asked by James on June 5, 2012
  56. college physics

    A hockey puck of mass 0.228 kg si sliding across level ice. There is a force of friction of 0.057 N acting opposite the direction of motion of the puck while it is sliding. a) what is the acceleration of the puck while it is sliding? b)if it initially has

    asked by javelin on July 9, 2017
  57. chemistry help!!!!!

    Consider the following reaction: Find the equilibrium partial pressures of A and B for each of the following different values of Kp. Assume that the initial partial pressure of B in each case is 1.0 atm, and that the initial partial pressure of A is 0.0

    asked by student on March 11, 2012
  58. Accounting

    Department J had no work in process at the beginning of the period, 18,000 units were completed during the period, 2,000 units were 30% completed at the end of the period, and the following manufacturing costs were debited to the departmental work in

    asked by Anonymous on June 30, 2013
  59. English Improving writing rough draft

    Please take a look at this for me this is what I plan to this in however one last look would be great thanks so much for all of your help. :) Prewriting Paragraph 1 The problem is Jack and Rachel often have nothing to do Bonnie and Molly are working extra

    asked by Kaleigh-Anne on June 21, 2008
  60. Chemistry

    The heat of fusion for water is 80cal/g. The specific heat of liquid water is 1.00cal/g. How many calories of heat are released when 20g of water at 30 degrees is cooled to 0 degrees and frozen to ice at 0 degrees?

    asked by Leah on July 19, 2010
  61. physics

    A rocket is fired straight up and accelerates upward at 24 m/s2 for 12 seconds. The rocket then runs out of fuel and coasts. Ignore any air resistance effects and use -9.8 m/s2 for the local acceleration due to gravity. a) What is the rocket’s maximum

    asked by help on September 28, 2011
  62. English

    The tone of "A smile" is ? A: Hopeful B: Cheerful. C: tense D: light Answer : D In "Boast Not , Proud English," the writer is protesting against: A: Prejudice B: Blasphemy C: Religion D: tolerance Answer: C ? In "Birches," Frost compares the broken ice

    asked by Ciara on March 26, 2013
  63. English!

    The tone of "A smile" is ? A: Hopeful B: Cheerful. C: tense D: light Answer : D In "Boast Not , Proud English," the writer is protesting against: A: Prejudice B: Blasphemy C: Religion D: tolerance Answer: C ? In "Birches," Frost compares the broken ice

    asked by Ciara on March 27, 2013
  64. I need help with these please ALGEBRA

    1. Consider the leading term of the polynomial function. What is the end behavior of the graph? Describe the end behavior and provide the leading term. -3x5 + 9x4 + 5x3 + 3 2. Evaluate : sqrt7x(sqrtx-7sqrt7) show your work. 3. Solve the equation. Check for

    asked by Ciaria on March 17, 2015
  65. algebra

    Managers of a local shopping mall selected a random sample of shoppers and recorded the gender of each. Here are their results. Gender Number of People Male 75 Female 108 Based on this sample, how many of the next 2000 shoppers would we predict to be male?

    asked by Anonymous on August 8, 2017
  66. Calculus

    Hello. I have a few questions from my study guide, that I need to know to study for my test. 1) x^(2/3)*((5/2)-(x) a) determine the ordered pairs of the local extrema of the function. Use the second derivative test. B) determine the ordered pairs of all

    asked by Matt on November 10, 2014
  67. Math

    Managers of a local shopping mall selected a random sample of shoppers and recorded the gender of each. Here are their results. Gender Number of People Male 69 Female 106 Based on this sample, how many of the next 2000 shoppers would we predict to be

    asked by Melanie on August 20, 2017
  68. managerial economics

    An airline transportation consultant offers the CEO of BlueStar, a struggling new commercial airline company, the following advice conscerning the airline's high operation costs in the current quarter: "You don't have enough aircraft to operate

    asked by tina on August 15, 2010
  69. math

    In the first quarter of a year, a company’s records showed that 68% of its sales employees missed no work and 76% of its sales employees made their sales quota for the quarter. Of the sales employees who missed no work, 87% made their sales quota for the

    asked by Evans on May 4, 2018
  70. Physics 203

    A puck of mass 0.60 kg approaches a second, identical puck that is stationary on frictionless ice. The initial speed of the moving puck is 5.0 m/s. After the collision, one puck leaves with a speed v1 at 30° to the original line of motion. The second puck

    asked by Kayla on March 29, 2011
  71. physics

    An 8 kg ball is moving at 4 m/s. Work is done on the ball to give it a speed of 12 m/s. What is the balls initial kinetic energy? What is the balls final kinetic energy? What work was done on the ball?

    asked by Anonymous on June 30, 2011
  72. Physics

    1)An electron moved from point A to point B along an equipotential surface. a)the eclectron performs work in moving from point A to point B b)Work is required to move the electron from point A to point B c)Work is both required and performed in moving the

    asked by Andrea on April 6, 2008
  73. English

    1. Be sure (that) you arrive at work on time every morning. 2. Make sure (that) you arrive at work on time every morning. 3. Be sure to arrive at work on time every morning. 4. Make sure to arrive at work on time every morning. ------------------ Are they

    asked by rfvv on May 17, 2017
  74. Physics

    Just as no mechanical device can be 100% efficient, no heat engine can transfer 100% of its heat to a single object. Some of the heat energy must be wasted (released into the environment). We have a heat engine that produces 150 J of heat, does 40 J of

    asked by Jessica on December 7, 2016
  75. History

    Which best analyzes criticisms of the New Deal? a.The New Deal was seen as promoting American dependency on the federal government. b.The New Deal was widely condemned for decreasing the power of the United States Supreme Court. c.The New Deal was

    asked by James on August 13, 2018
  76. World History

    Which best analyzes criticisms of the New Deal? The New Deal was widely condemned for decreasing the power of the United States Supreme Court. The New Deal was denounced for increasing the national debt and reach of the federal government. The New Deal was

    asked by Collin on August 8, 2018
  77. History

    Which best analyzes criticisms of the New Deal? a.The New Deal was seen as promoting American dependency on the federal government. b.The New Deal was widely condemned for decreasing the power of the United States Supreme Court. c.The New Deal was

    asked by Anonymous on January 25, 2018
  78. chemistry

    A vitamin C tablet containing 250 mg of ascorbic acid (C6H7O6; Ka = 8.0 x 10-5 is dissolved in a 250 mL glass of water. What is the pH of the solution? i tried answering this question multiple times but i still get it wrong.... can someone help?

    asked by Finding the pH of a weak acid? on March 20, 2012
  79. dynamics

    cars A and B are d=60m apart and traveling respectively with constant speeds v1=32km/h and v2=24km/h on an ice covered road.knowing that 45s after driver A apples his breaks to avoid overtaking car Bthe two cars collide,determine a)the uniform deceleration

    asked by rajesh on October 8, 2012
  80. Statistics

    A large furniture store has begun a new ad campaign on local television. Before the campaign, the long term mean daily sales were $24,819. A random sample of 40 days during the new ad campaign gave a sample mean daily sale of $25,910. Does this indicate

    asked by Jasmine on March 25, 2012
  81. CHEMISTRY

    How many grams of CH4 are required to produce 43 g of Cu according to the following equation: 4CuO + CH4 --> CO2 + 2H20 + 4Cu? I already tried to work the problem myself, and I may have gotten this right, but I do not have an answer key to compare to.

    asked by Casey on July 10, 2010
  82. Health (Ms. Sue)

    Describe what you would do if you saw a co-worker committing serious safety violations at work. A: If I saw a co-worker committing serious safety violations at work, there are several actions I would take. First, I would advise this co-worker to not commit

    asked by Anonymous on January 6, 2014
  83. Intergovernmental Relations

    I am doing a paper on the balance of power between federal local and state governments in the even of a national disaster. One of the questions posed to me was Should the federal government's superior financial resources supersede concerns about

    asked by V on March 31, 2009
  84. English Improving writing

    please take a look at this thanks Prewriting Paragraph 1 The problem is Jack and Rachel often have nothing to do Bonnie and Molly are working extra and have to work over time Melanie and Jessica share an administrative assistant Larry's assistant only

    asked by Kaleigh-Anne on July 8, 2008
  85. Chemistry - Heat of Fusion

    When water is frozen into ice cubes in the freezer, where does the released heat go? I think it just goes into the air in the freezer, nowhere special. Because won't the heat become cold air then? That's right. The heat just adds to the heat load that the

    asked by M and V on April 24, 2007
  86. Organic Chemistry

    Separation scheme for isolating benzoic acid Could you please show me a separation scheme for isolating benzoic acid from a reaction mixture if mixing a Grignard reagent phenylmagnesium bromide with dry ice (CO2) in ether? Thanks!

    asked by Jessica on October 22, 2010
  87. Chemistry

    The heat of combustion of bituminous coal is 2.5 x 10^4 J/g. What quantity of coal is required to produce the energy required to convert 100. Pounds of ice at 0.0 degrees Celsius to steam at 100.0 degrees Celsius? Is the answer 5.36 about right. I'm not

    asked by Lucy on January 6, 2015
  88. Science

    Separation scheme for isolating benzoic acid Could you please show me a separation scheme for isolating benzoic acid from a reaction mixture if mixing a Grignard reagent phenylmagnesium bromide with dry ice (CO2) in ether? Thanks!

    asked by Jessica on October 22, 2010
  89. Physic

    If 0.045 kg of ice at 0 C is added to 0.390 kg of water at 34 C in a 0.150 kg aluminum calorimeter cup, what is the final temperature of the water? If the final equilibrium temperature is 21 C and no heat is lost to the cup itself or the environment, what

    asked by Anonymous on May 7, 2011
  90. physics

    A 38 kg girl and an 8.4 kg sled are on the frictionless ice of a frozen lake, 16 m apart bu connected by a rope of negligible mass. The girl exerts a horozontal 4.7 force on the rope. (a) What is the acceleration of the girl? m/s2 (b) What is the

    asked by johnny on December 11, 2008
  91. Physics

    At the top of a frictionless inclined plane, a .50 kilogram block of ice possesses 6.0 joules of gravitational potential energy with respect to the bottom of the incline. After sliding halfway down the plane, the block's gravitational potential energy is?

    asked by Gonzalez on January 16, 2012
  92. Physics

    A player strikes a hockey puck giving it a velocity of 47.673 m/s. The puck slides across the ice for 0.175 s after which time its velocity is 46.473 m/s. The acceleration of gravity is 9.8 m/s2 . If the puck strikes the goalie’s pads and stops in a

    asked by Chris on January 8, 2011
  93. science

    fallow a drop o water through three states of matter. describe what is happening to the molecules as the water turns to gas than describe what is happening to the molecules when the water freezes into ice

    asked by valerie on March 4, 2008
  94. Physics

    The resistance of a platinum resistance thermometer is 30 ohms at ice point, 40 ohms at steam point, and 34.5 ohms are on certain holiday. What is the temperature of the day in Celsius temperature scale ?

    asked by Anonymous on January 13, 2019
  95. physics

    A 60 kg woman and an 85 kg man stand 9.0 m apart on frictionless ice. (a) How far from the woman is their CM? (b) If each holds one end of a rope, and the man pulls on the rope so that he moves 1.1 m, how far from the woman will he be now? (c) How far will

    asked by Ashley on February 27, 2012
  96. physics

    The rings of a Saturn-like planet are composed of chunks of ice that orbit the planet. The inner radius of the rings is 78,000 km, while the outer radius is 190,000 km.The mass of this planet is 6.14 * 10^26 kg.

    asked by physss on December 15, 2010
  97. Chemistry

    1) how many joules are required for each of the following? A)Heating 55g of water from 12 degree Celsius to 76 degree Celsius B) Melting 12.8g of ice at 0 degree Celsius. c) Boiling 21.1 g of water at 100 degree Celcius

    asked by Keliane on November 11, 2016
  98. Science

    A calorimeter of water equivalent 50g contains 250g of water and 50g of ice at 0 degree celsius, 30 g of water at 80 degree celsius is added to it. The final condition in the system will be

    asked by Om Gopal Mishra on July 21, 2017
  99. Honors Chem

    If I make an ice pack with 750 mL of water, what mass of ammonium chloride must I include to get the temperature to drop from 20 degrees celsius to 5 degrees celsius. The heat of solution of the water and ammonium chloride is 14.8 kJ/mole. I just need help

    asked by Ella on December 2, 2014
  100. Calculus

    A 20 meter long steel cable has density 2 kg per meter. It is hanging straight down. There is a 100 kg bucket of concrete attached to the bottom. How much work is required to lift the bucket 10 meters by lifting the cable ten meters? Gravitational force

    asked by Andre on December 31, 2015