1. Chemistry

    If you had observed the fate of an ice cube at 25 degrees Celsius, what would you conclude about the spontaneity of the process H2O (s) H2O (l) ? I know for it to be spontaneous, delta G has to be negative, but how can I determine the delta G with the info
  2. Physics

    A hockey player hits a puck with his stick, giving the puck an initial speed of 5.0 m/s. If the puck slows uniformly and comes to rest in a distance of 20 m, what is the coefficient of kinetic friction between the ice and the puck?
  3. Introduction to Juvenile Justice

    I am having a hard time finding descriptions for federal, state, or local programs in social structure theory, social process theory and social conflict theory.
  4. Management of Information Systems

    Each scenario describes an individual or organization with specific IT needs. Based on the information presented in the scenario, make a recommendation for which computer system type would be the best fit for each individual or organization and why. Your
  5. Art

    1. Alexander Calder invented this type of art. () fiber art () mobiles () stabiles () public art 2. Today, decisions in planning, selecting, and/or creating an artwork for public display are made in the following way. () They are the decision of the
  6. Art- Check Answers- Please

    1. Alexander Calder invented this type of art. fiber art mobiles ******** stabiles public art 2. Today, decisions in planning, selecting, and/or creating an artwork for public display are made in the following way. They are the decision of the artist. by
  7. medical transcription

    Ten years ago I started working for DMD medical Supplies as a clerk. Six months ago I was promoted to Office Manager. I manage two people. My office provides secretarial support for the four members of the executive team. Two years ago, my boss Liz
  8. pre-cal

    aj uses a lingshot to launch a rock straight up from the a point of 6 ft. above ground level with an initial velocity of 170 ft per second. A) find an equation that models the height of the rock t seconds after it is launched. b) what is the maximum height
  9. english composition 2

    Motivational letters are to encouraging positive action as diplomatic letters are to ? a.sustaining important personal and organizational relationships. b.dealing with local, state. and federal regulatory agencies c.resolving internet or external dispute
  10. english composition 2

    Motivational letters are to encouraging positive action as diplomatic letters are to ? a.sustaining important personal and organizational relationships. b.dealing with local, state. and federal regulatory agencies c.resolving internet or external dispute
  11. History -- two questions?

    After the Gupta Empire collapsed, what group gained control of much of India? Muslims from Afghanistan Buddhists from China Christians from Ethiopia local Hindu princes Which of the following was NOT a part of the organization of the early Christian
  12. Physics - KE/inertia

    The rigid body shown in Figure 10-66 (it is a triangle with the upper mass = to M and the bottom two corners/masses equal to 2M. The bottom side length equals .70 cm with point P in the middle of the side and the other two sides equal .55 cm)consists of
  13. math

    Factor 2x²+13x+40 I thought with this sort of problem you are supposed to multipy 40 by 2 and get 80 and then come up with two factors that equal 13. If this doesn't work, you are supposed to factor out a number/variable. Since neither of these methods
  14. AP Chemistry

    Hey guys! I have answers, but am confused. Please and thanks for any help! A) Which of the following is false? 1.A spontaneous change occurs by itself without assistance. 2.The greater the statistical probability of a state, the greater is its entropy. 3.A
  15. english-grammar

    I am writing an essay and am not sure If I should combine these two sentences with a semi colon or just leave them separate. Please help! (It may take...will be fruitful) I have found that nothing can be accomplished without hard work. It may take a large
  16. Trig/PreCalc

    Teach me how to express 5sqrt3 - 5i in polar form please. I don't want you to do the work for me. Just show me the steps I need to do the work properly on my own. Otherwise I will not pass this class or the exam when I enter college, and I do not want to
  17. Math Check

    A bank offers two interest account plans. Plan A gives you 6% interest compounded annually. Plan B gives you 13% annual simple interest. You plan to invest 2,000 for the next 4 years. Which account earns you the most interest (in dollars) after 4 years?
  18. Math

    A bank offers two interest account plans. Plan A gives you 6% interest compound annually. Plan B gives you 13% annual simple interest. You plan to invest $2,000 for the next 4 years. Which account earns you the most interest (in dollars) after 4 years? How
  19. Dr. BOB chemistry help please!

    hi At a particular temperature, K = 1.00 102 for the following reaction. H2(g) + I2(g)= 2 HI(g) In an experiment, 1.73 mol H2, 1.73 mol I2, and 1.73 mol HI are introduced into a 1.00 L container. Calculate the concentrations of all species when equilibrium
  20. math

    A different eight grader has been asked to work at the face painting booth every half hour. Use division to find how many eighth-graders are needed to work at the face painting booth during the fair. Show your work. I don't understand the division part,
  21. Sci 230

    I live in Texas, what local ecosystem or any ecosystem could I use for an assignment. I have to include its hierarchy of interactions and its biodiversity. I also have to answer how is the ecosystem dependent on the biodiversity as well as one threat to
  22. Math

    Last year,your class held a fundraiser and donated 850 dollars to a local charity.This year,your class's donation increased by 24%.How much did your class donate this year?
  23. Stastics

    A doctor at a local hospital is interested in estimating the birth weight of infants. How large a sample must she select if she desires to be 98% confident that the true mean is within 2 ounces of the sample mean? The standard deviation of the birth
  24. Statistics

    A nurse at a local hospital is interested in estimating the birth weight of infants. How large a sample must she select if she desires to be 99% confident that the true mean is within 2 ounces of the sample mean? The standard deviation of the birth weights
  25. math

    during one year the Wagners real estate bill included $600 for local schools. Of this amount, $150 went to the high school district. what percent did the Wagner family pay to the high school district?
  26. algebra

    While preparing for a kayak race, Marta practiced on a local river. On one trip she traveled 3.5 miles upstream in 50 minutes with the return trip taking 22.9 minutes. What was her speed in still water and the sped of the river current?
  27. college

    Rs 150 will be given to cultivate one hectare of land.A and B can do this work 12 hours.B and C can do it in 15 hours and C and A ca do it in 10 hours.How much each will get if all the three work together?
  28. Math

    The local video store has determined that 65% of the store's customers are women. What is the probability that the next 3 customers will be women? Round to the nearest percent.
  29. ENGLISH

    The following sentence is in what tense? Laura has given donations to the local food bank. A. Past perfect B. Present perfect C. Present D. Past I THINK ITS A. RIGHT?
  30. Math

    Peter bought a computer at a local electronics store. If the computer cost $750.00, and tax was 7%, how much did Peter pay in tax?
  31. economics

    the local city gave $500 worth of clothing to all the poor families in town.therefore, these families will have $500 more clothing than before."is this correct?
  32. 7th grade marking period project

    I need help im a 7th grader that has to do a project. They want me to decide what the scale wil be for oyur scale drawing or model? use a unit of measurement that will be easy for you to work with? write thescale factor down. Show the work for converting
  33. English

    What does Lian Dolan mean in “Carrying Your Own Skis” when she says that “skiing was work”? A. Skiing was not at all enjoyable. B. Skiers then did not have the conveniences they have now. C. Skiing was a very expensive sport, and you had to work
  34. College Alg

    Graph the polynomial in the given viewing rectangle. Find the coordinates of all local extrema. State each answer correct to two decimal places. (If an answer does not exist, enter DNE.) y = 2x3 − 3x2 − 12x − 32, [ −5, 5] by [−60, 30] find
  35. math

    Epicure Market prepares fresh gourmet entrees each day. On Wednesday, 80 baked chicken dinners were made at a cost of $3.50 each. A 10% spoilage rate is anticipated. At what price should the dinners be sold to achieve a 60% markup based on selling price?
  36. Reading

    Ernest Hemingway's first job was as a newspaper writer in Kansas, at the age of 17. He wrote about everything that happened at the local police station, the train station, and the hospital. Hemingway worked for the newspaper for six months. The Red Cross
  37. physics

    What is the average useful power output of a person who does 5.50×106 J of useful work in 6.50 h? Working at this rate, how long will it take this person to lift 1850 kg of bricks 1.20 m to a platform? (Work done to lift his body can be omitted because it
  38. physics

    What is the average useful power output of a person who does 5.50×106 J of useful work in 6.50 h? Working at this rate, how long will it take this person to lift 1850 kg of bricks 1.20 m to a platform? (Work done to lift his body can be omitted because it
  39. Physics

    (a) Determine the amount of work (in joules) that must be done on a 95 kg payload to elevate it to a height of 1007 km above the Earth's surface. 1 ? MJ (b) Determine the amount of additional work that is required to put the payload into circular orbit at
  40. Physics

    A 2.0kg object is moving at 3 m/s. A 4-N force is applied in the direction of motion and then removed after the object has traveled an additional 5m. The work done by this force is. Would the answer be simply: W=F*d= (4* 5m)= 20N and you only take the
  41. physics

    a) What is the minimum work needed to push a 900 kg car 410 m up a 17.5° incline with zero friction? If i know this answer is 1.08e6 what equation should i use for the next part because the one i used was wrong (b) What is the minimum work needed if the
  42. Physics

    (a) Determine the amount of work (in joules) that must be done on a 95 kg payload to elevate it to a height of 1007 km above the Earth's surface. 1 ? MJ (b) Determine the amount of additional work that is required to put the payload into circular orbit at
  43. Science

    An engineer discovered that a TV set was receiving too much voltage to work properly. Which of the following circuit parts should the engineer add to make the TV set work properly? A:switch B:insulater C:resistor D:conductor I think C is the right answer.
  44. Math Galp

    A DJ charges $250 for 1 hour of work and charges $410 for 3 hours of work. Write an equation that models this situation. Let "x" represent the number of hours worked and "y" represent the cost to hire the DJ. Thank you for the help! I appreciate it.
  45. physics

    Suppose a 300–g kookaburra (a large kingfisher bird) picks up a 77.0–g snake and raises it 2.70 m from the ground to a branch. How much work did the bird do on the snake? How much work did it do to raise its own center of mass to the branch?
  46. Physics

    Suppose a 300–g kookaburra (a large kingfisher bird) picks up a 84.0–g snake and raises it 2.30 m from the ground to a branch. How much work did the bird do on the snake? How much work did it do to raise its own center of mass to the branch?
  47. phsics

    The graph in Figure 10-22 shows the force and displacement of an object being pulled. Figure 10-22 (a) Calculate the work done to pull the object 7.0 m. 1150 J (b) Calculate the power that would be developed if the work was done in 2.4 s. Enter a number.2
  48. math

    A cordless telephone will work if it is within 50m of its base, If while you are talking on the phone, you walk 15m away from the base in a southerly direction, then, turn to face west and walk 42m, will the phone still work?
  49. math

    which expression is equivalent to 4*4*4*4*4*4*4*4? Debra has 2/3 of a pound of loose green tea leaves. If she wants to keep one-half of the tea at home and the other half at work, what fraction of a pound will she have at work? 7-5/7= what is (-7) to the
  50. Physics

    Suppose a 356–g kookaburra (a large kingfisher bird) picks up a 65.0–g snake and raises it 2.30 m from the ground to a branch. How much work did the bird do on the snake? How much work did it do to raise its own center of mass to the branch?
  51. english -I NEED HELP AGAIN

    Almost _________ work would be better than ___________. anyone's hers anyone's her's anyones hers anyones' hers' Anyone is singular and needs to show possession -- so anyone's work. . . The next pronoun is also singular and possessive. But, hers shows
  52. math

    bayside insurance offers two health plans. under plan A, giselle would have to pay the first 160 of her medical bills, plus 25% of the rest. under plan B, giselle would have to pay the first 180, but only 20% of the rest. for what amount of medical bills
  53. algebra

    bayside insurance offers two health plans. under plan A, Giselle would have to pay the first $130 of her medical bills, plus 40 % of the rest. Unde plan B, Giselle would pay the first $140, but only 35% of the rest. For what amount of medical bills will
  54. Math

    A cell phone company offers two different plans. Plan A: Monthly fee of $28 30 free minutes $0.45 per additional minute   Plan B: Monthly fee of $40 No free mins $0.25 per additional minute Determine the time in the mins that results in the same monthly
  55. Agosec Ghana

    a machine was used to lift a load of 30N through a distance of 2metres. the effort applied was 10N through a distance of 8metres. calculate the. A) mechanical advantage B) work input of the machine C) work output of the machine D) the efficiency of the
  56. algebra

    in solving the equation (x +2)(x - 2) = 32 eric stated the solution to be x + 2 = 32 => x = 30 or x- 2 = 32 => x = 34. however at least one of these solutions fails to work when plugged back into the equation. why is that? please help eric to understand
  57. health care services

    as digital technology continues to influence Health Care and Human Service in the future, what does this mean for those who work and will work in these fields? What will workers in these fields have to do to prepare themselves for this environment? Will
  58. math

    Maria normally spends a half-hour driving to work. When her average speed is ten miles per hour slower than usual, the trip takes ten minutes longer. How many miles does she drive to work?
  59. Math 207

    If the work required to stretch a spring 4 feet beyond its natural length is 17 foot-pounds, how much work is needed to stretch it 35 inches beyond its natural length? Your answer must include the correct units. (You may enter lbf or lb*ft for ft-lb.)
  60. Physics

    If the work required to stretch a spring 4 feet beyond its natural length is 17 foot-pounds, how much work is needed to stretch it 14 inches beyond its natural length? Your answer must include the correct units. (You may enter lbf or lb*ft for ft-lb.)
  61. 7th grade Math

    Mrs.Jackson earned a $500 bonus for signing a one-year contract to work as a nurse. Her salary is $22 per hour. If her first week's check including the bonus is 1,204, how many hours did mrs.jackson work
  62. algebra 1

    in the equation 5x+y=-1,m= I will be happy to critique your work on this. Please note that we don't do students' homework for them. Once YOU have come up with attempts to answer YOUR questions, please re-post and let us know what you think. Then someone
  63. Hospitality

    A key benefit identified as being part of the Food Service industry that Compass is not having to work nights and weekends regulary. True of False. I say True, becaue when you don't work during nights at food industries?? what do you think
  64. al gebr word problem MATH

    parts to fix your car cost $55.35. the mechanic charges $35 per hour for labor. the final bill is $177.85. how long did the mechanic work on your car? write and solve an equation. show work. i got; 177.85 - 55.35 = x x / 35 = is this almost right? im not
  65. science(chem)

    I'm confused as to what to do for the calculations for my lab. Lab: Semimicroscale crystalization-erylenmyeyerflask and Hirsch Funnel Weigh 0.30g of impure sulfanilamide and then transfer to a 10ml Erlenmeyer flask. To a second Erlenmeyer flask add about
  66. Science/math

    If Greenland ice sheet melted, approximately how much would the sea level rise worldwide? (1 meter =3.28 feet) a. 500 feet b. 16.4 feet c. 50 feet d. 164 feet
  67. Physics

    What is the work required to raise a 10. kg object from the surface of the Earth to a height of 2.0 m? 5.0 J 20. J 2.0 E2 J 2.0 E3 J My answer was 20. J but this was wrong. Is the answer 2.0 E2 J? A net force of 9.0 N acts through a distance of 3.0 m in a
  68. math

    according to a college survery, 22% of all students work full time. find the mean for the number of students who work full time in samples of 16. round to the nearest tenth how do we do this on a TI84 calculator
  69. Genera Chemistry

    A certain gas expands in volume from 1.75 L to 8.32 L at constant temperature. Calculate the work done (in Joules) by the gas if it expands against a constant pressure of 3.8 atm. Please explain and show the work and correct answers.
  70. algrebra

    If the subway travels and average speed of 45mph and it allows you to get to work at 8:30, when you leave your house at 7:45. One day the subway was having problems and could go 35mph. how early would you have to leave your house to make it to work on
  71. math

    Suppose that you have $12,500 to invest over a 4 year period. There are two accounts to choose from: 4.5% compounded monthly or 4.3% compounded continuously. a. Write the formula for the first account’s compound interest for n compounding per year. b.
  72. CHEMISTRY

    How many grams of sulphuric acid (H2SO4) are needed to make 1.5L of a 1.5 molar solution? ~~~~~~~~ Here's my work so far: 1.5L x 1.5mol/L = 2.25molH2SO4 2.25mol H2SO4 x 98.09g H2SO4 / 1mol H2SO4 = 220.7025g H2SO4 I wanted to ask if my work is correct,
  73. MATH LOGIC AGAIN

    Hi can some one go back to my Math logic problem and possibly give me one more example? thanx :) I found a paper you may want your library to get for you: http://cat.inist.fr/?aModele=afficheN&cpsidt=13604737 It is probably in the local college library. I
  74. Math

    A local kindergarten is thinking of making posters that show all the different ways of adding two or more integers from 1 to 9 to get a sum of 10. If there is enough space on each poster for up to 50 possible solutions, how many posters will the school
  75. History

    Why did the Hittites and others migrate from Central Asia to Mesopotamia? A- the needed more land for growing populations B- they were enlarging their empire C- the Persian army drove them out D- climate change brought a mini ice age to Asia My guess is D
  76. Physics

    A 4-person bobsled team pushes the 330 kg sled down the 6.0 degree hill with a force of 1780 N. The coefficient of friction for ice and the runner is 0.135. How fast will the sled be moving at the end of the 40m push? Answer is in meters/second
  77. Chemistry(Please help)

    Calculate the pH of an aqueous solution of 0.15 M potassium carbonate. I know that pH = -log(H30+) but I am not sure how to start this problem. Chemistry(Please help) - DrBob222, Saturday, April 14, 2012 at 11:09pm Hydrolyze the CO3^2-. CO3^- + HOH ==>
  78. physics

    A hockey puck truck at ice level just clears the top of a glass wall that is 2.80 m high. The flight time to this point is 0.650 s, and the horizontal distance is 12.0 m. Find a.) the initial speed of the puck and b.) the maximum height it will reach.
  79. English

    I urgently need you to check these sentences. I included my doubts in parentheses. Thank you. 1) The bride, as red as a rose, has entered into (?) the hall (OR the hall /without into) 2) The ice split as (?) the sound of thunder and the helmsman steered
  80. physics

    A hockey puck truck at ice level just clears the top of a glass wall that is 2.80 m high. The flight time to this point is 0.650 s, and the horizontal distance is 12.0 m. Find a.) the initial speed of the puck and b.) the maximum height it will reach.
  81. English

    Can you check if my rephrasing is correct? Thank you very much. 1) The monster's skin is yellow and scarcely covers the pulsing work of its muscles and arteries. 2) The ship left the harbour, but a violent storm-blast compared to an enormous bird brought
  82. Chemistry

    Four ice cubes at exactly 0 degrees Celsius having a total mass of 55.0g are combined with 120g of water at 77 degrees Celsius in an insulated container. If no heat is lost to the surroundings, what will be the final temperature of the mixture?
  83. chemistry

    what is the final temperature of amixture containning 25 grams of ice at -20 degree celciusadded to water at room temperature 22oC mass of water is 50g followed the steps given by you but not getting the answer (0degree celsius)
  84. Business Math

    A manufacturer of ice skates offered a chain discount of 7/5/1. Bobby’s Sport Shop ordered 30 pairs of skates that had a list price of $925. What was the amount Bobby had to pay for the goods?
  85. Physics

    find the heat flow through the sides of an 25cm tall by 10cm wide of ice water in 46s.The glass is 6.00mm thick; the temperature is inside is 28 celcius, the temperature outside is 50 celcius
  86. Physics

    A hockey puck is sliding across a frozen pond with an initial speed of 6.5 m/s. It comes to rest after sliding a distance of 7.6 m. What is the coefficient of kinetic friction between the puck and the ice? I know this one is not that difficult. However, I
  87. English

    Underline the correct verb form to complete each sentence. --------------------------------------* 2. Has the ice (froze, frozen) on the pond? 5. The baby has (broke, broken) the toy. --------------------------------------- Which one would be correct for
  88. Science

    Question: The greatest expansion of water occurs when: isn't it when it turns to ice?? The other answers are at 4C it gains temperature or at 4C it loses temperature. In the winter the pipes can break because the water in them freezes that's why I thought
  89. physics

    A contestant in a winter games event pushes a 41.0 kg block of ice in the positive direction across a frozen lake as shown in the Figure (a). The coefficient of static friction is 0.1 and the coefficient of kinetic friction is 0.03.
  90. English

    In the following sentence, do I have the complete subject correct? Chunks of floating ice smaller than 50 feet long and with less than 17 feet showing above the water (end of subject) are called growler or bergy bits.
  91. Physics

    We have a heat engine that produces 150 J of heat, does 40 J of work, and emits 110 J into another system. What is the efficiency of the heat engine? (show you work)
  92. Math

    Jessica can jog to work in 4/5 of an hour. When she rides her bike, it takes her 3/10 of an hour. If she rides 10 miles per hour faster than she jogs, how far away is her work?
  93. Math

    Jessica can jog to work in of an hour. When she rides her bike, it takes her of an hour. If she rides miles per hour faster than she jogs, how far away is her work?
  94. physics

    A child pushes a toy box 4.0m along the fllor with a force of 6.00N directed downward at an angle of 37.0 degrees to the horizontal. a. How much work does the child do? b. Would you expect more or less work to be done if the child pulled upward at the same
  95. Physics

    What is the average useful power output of a person who does 5.90×106 J of useful work in 7.90 h? I got 207 W Working at this rate, how long will it take this person to lift 2400 kg of bricks 1.30 m to a platform? (Work done to lift his body can be
  96. Chemistry

    Calculate the work, in kJ, done when 126 g of tin dissolves in excess acid at 25.0˚C and 1.00 atm. Assume Ideal Gas behavior. Sn(s) + 2 H+(aq) → Sn2+(aq) + H2(g) I basically need to know how to find the change in volume since work=-pressure*volume
  97. science

    A drop of mass 2.0 g falls from a cliff of height 1.0 km. It hits the ground with a speed of 50.0 m/s. The work done by resistive force is 1. -10j 2. -12.50j 3. -15.5j 4. -17.50j solution:- I think change in kinetic energy can give me work done. B ut how
  98. Physics

    you lift a 10 N physics book up in the air a distance of 1m at a constant velocity of .5m/s. What is the work done by the weight of the book? a) +10 J b)-10 J c) +5 J d)-5 J 10 N is the force of gravity and to find work you do this: W=F_g(change in
  99. Art Appreciation

    Ruben and Rembrandt: Reflection and Temperament. Contrast The Elevation of the Cross by Rubens with Rembrandt’s Return of the Prodigal Son. Explain how each work reflects the artist and his temperament. How does each work mirror sociopolitical
  100. Physics

    An 91.0 kg in-line skater does 3620 J of nonconservative work by pushing against the ground with his skates. In addition, friction does -615 J of nonconservative work on the skater. The skater's initial and final speeds are 2.70 m/s and 1.02 m/s,