Questions Asked on
February 15, 2010

  1. Physics

    Question: The amount of internal energy needed to raise the temperature of .25 kg of water by 0.2 degrees Celsius is 209.3 J. How fast must a 0.25 kg baseball travel in order for its kinetic energy to equal this internal energy? KE = (.5)(m)(v^2) 209.3 J =

    asked by mike
  2. physics

    A 2.5 kg block of ice at a temperature of 0.0 degrees Celcius and an initial speed of 5.7 m/s slides across a level floor. If 3.3 x 10^5 J are required to melt 1.0 kg of ice, how much ice melts, assuming that the initial kinetic energy of the ice block is

    asked by mike
  3. chemistry (science)

    When heated, calcium carbonate decomposes to yield calcium oxide and carbon dioxide gas via the reaction CaCO3 ---> CaO + CO2 How many grams of calcium carbonate are needed to produce 73.0 of carbon dioxide at STP?

    asked by beeni
  4. World Geography

    please Write a short essay comparing the ways in which command economies and market economies affect a worker's life? or if you want exp it a little better to me.

    asked by nick
  5. computer science

    I need help with my Java homework! Write a program that calculates a customer's monthly bill. It should ask the user to enter the letter of the package the customer has purchased (A, B, or C) and the number of hours that were used. It should then display

    asked by Matt
  6. Physics

    A student presses a book between his hands, as the drawing indicates. The forces that he exerts on the front and back covers of the book are perpendicular to the book and are horizontal. The book weighs 32 N. The coefficient of static friction between his

    asked by kelly
  7. chemistry (science)

    What volume of methanol is formed if 2.86×10^11 of methane at standard atmospheric pressure and 25 degree celcius is oxidized to methanol? The density of CH3OH is 0.791g/mol . Assume that the oxidation of methane to methanol occurs in a 1:1 stoichiometry.

    asked by beeni
  8. computers

    I need help with the follwing question: Give an example of a column A and a column B such that B is functionally dependent on A. Give an example of a column C and a column D such that D is not functionally dependent on C.

    asked by John
  9. P. Chemistry

    The equilibrium 2 SO2(g) + O2(g) 2 SO3(g) has the value K = 2.5 1010 at 500. K. Find the value of K for each of the following reactions at the same temperature. (a) SO2(g) + 1/2 O2(g) SO3(g) K = (b) SO3(g) SO2(g) + 1/2 O2(g) K = (c) 3 SO2(g) + 3/2 O2(g) 3

    asked by Tommy
  10. chemistry

    consider the reaction in which 410 grams of Ca(NO3)2 react with just the right amount of lithium metal in a single replacement reaction. 1-how many grams of lithium are required? 2- how many grams of each product can be produced?

    asked by need help
  11. Trigonometry

    How do you express sin4x as a trigonometric function of x?

    asked by Veronica
  12. Physics

    The Moon has a mass of 7.36 1022 kg and a radius of 1.74 106 m. (a) What is the acceleration due to gravity on the Moon b) How much would a 4.03 kg person weigh on this planet

    asked by Anonymous
  13. Chem

    A 10.0% by mass H2SO4(aq) solution has a density of 1.07 g·cm-3. How many milliliters of solution contain 8.34 g of H2SO4? What mass (in grams) of H2SO4 is in 248 mL of solution? It's been a while since I have had a chem class...so sorry if this seems

    asked by Cairy
  14. chemistry

    How many moles of oxygen are there in 23.5g of H2SO4? (numbers are subscripts)How many oxygen atoms? How many grams of oxygen?

    asked by Ralph
  15. 5th grade

    I need an answer to the analogy fifteen:five::nine: ?

    asked by colt
  16. Chemistry help

    I'm not sure how to answer this question.... Assume that magnesium would act atom-for-atom exactly the same as copper in this experiment. How many grams of magnesium would, have been used in the reaction if one gram of silver were produced? The atomic mass

    asked by Kelsey
  17. 4th grade

    what antonyms are these nncntglty

    asked by Denice
  18. chemistry

    How much heat, in kilojoules, is evolved when a 3.70 kg sample of molten Cu freezes? The normal boiling point is 1357 K, and heat of fusion is 13.05 KJ/mol. 2.) How much heat must be absorbed at 1357 K to melt a bar of copper (80 * 10 * 12 cm) assume d =

    asked by Andrew
  19. AP Chemistry

    The combustion of 1.00 mol of sucrose,C12H22,O11, evolves 5650 kJ of heat. A bomb calorimeter has a calibrated heat capacity of 1.23 kj/degree Celsius. How many grams of sucrose should be burned to raise the temperature of the calorimeter and its contents

    asked by Andrew
  20. english-siddhartha

    i have answered the other questions that i was requested to do but theses ones i cant figure them out can anyone help please? Chapter 5 Kamala What changes do we see in Siddhartha in chapter 5? ---3 quotes that show this change? Chapter 6 Amongst the

    asked by jade.
  21. chemistry

    How much heat, in kilojoules, is evolved when a 3.70 kg sample of molten Cu freezes? The normal boiling point is 1357 K, and heat of fusion is 13.05 KJ/mol. 2.) How much heat must be absorbed at 1357 K to melt a bar of copper (80 * 10 * 12 cm) assume d =

    asked by Andrew
  22. Chemistry

    A 1.00% by mass MgSO4(aq) solution has a freezing point of -0.192°C. Water has a kf of 1.86 (K·kg)/mol. (a) Estimate the van't Hoff i factor from the data. (b) Determine the total molality of all solute species. I can probably figure out the second part

    asked by Trixie
  23. Geography

    Where on Earth? Postcards form Europe Your neighbors, the Wiltons, have gone away on vacation to Europe. Before they left, Mrs. Wilton told all fo the neighbors, "We'll be sending lots of postcards. Try to figure out where each card came form. If you do,

    asked by y912f
  24. English

    Midsummer Night's Dream: The fourth act opens with Bottom at center stage. What is your opinion of Bottom's character? How might he be the antithesis, or opposite of Theseus's character?

    asked by Dan
  25. chemistry

    How many grams of oxygen are there in 100.0 grams of water? What percentage of the mass of water is oxygen?

    asked by Jack
  26. Problem Solving

    Johnny has two bank accounts. One pays 7% interest and the other pays 10% interest. A total of $25,000 invested in the two accounts. Last year he earned $2,200 in interest on two accounts. How much money does he have in each account? define variables and

    asked by Wejie
  27. Science

    Minor Body | Asteroid|Meteor|Meteorite. _______________________________________ Similarities _______________________________________ Differences _______________________________________ The last one is supposed to be Comet; after Meterorite. I'm confused a

    asked by Sara
  28. chemistry

    What is the freezing point of a solution that contains 10.0 g of glucose (C6H12O6)in 100.g of H20? Kf for water is 1.86C/m.

    asked by Lisa
  29. Physics

    A 32 kg crate is placed on an inclined ramp. When the angle the ramp makes with the horizontal is increased to 23.2° the crate begins to slide downward. (a) What is the coefficient of static friction between the crate and the ramp? (b) At what angle does

    asked by Bobby C
  30. Science

    I have to create a mnemonic to help me remember the difference between meteors and meteorites. I know what they both are, but I am still unable to think of a mnemonic. A little help would be appreciated, thanks

    asked by Sara
  31. chemistry

    2.) How much heat must be absorbed at 1357 K to melt a bar of copper (80 * 10 * 12 cm) assume d = 8.93 g/cm^3. The normal boiling point is 1357 K, and heat of fusion is 13.05 KJ/mol.

    asked by Andrew
  32. Physics

    You push a box along the floor against a constant force of friction. When you push with a horizontal force of 72 N the acceleration of the box is 0.43 m/s2; when you increase the force to 77 N the acceleration is 0.58 m/s2. (a) Find the mass of the box.

    asked by Bobby C
  33. Physical Chemistry

    Calculate the concentrations of each of the following solutions. (a) the molality of chloride ions in an aqueous solution of iron(III) chloride for which xFeCl3 is 0.0195 (b) the molality of hydroxide ions in a solution prepared from 9.16 g of barium

    asked by Trixie
  34. Language Arts

    this is a pair of antonyms with missing vowels glybtfl

    asked by Denice
  35. Chem

    When 0.10 g of insulin is dissolved in 0.200 L of water, the osmotic pressure is 2.30 Torr at 20°C. What is the molar mass of insulin? I tried using the van't hoff equation, converting Torr into atm; but not sure how to do it. my teacher didn't really

    asked by Mark
  36. business memo

    can someone double check for me? This is the second part to the business letter I posted a few days ago. Process: Draft an interoffice memorandum to Miriam Hopkins, the Director of Human Resources: a. Assume that you’ve received confirmation from Jeremy

    asked by Ruby
  37. Chemistry

    It is estimated that uranium is relatively common in the earth’s crust, occurring in amounts of 4 g/metric ton. A metric ton is 1000 kg. At this concentration, what mass of uranium is present in 1.0 mg of the earth’s crust?

    asked by Leo
  38. Chemistry

    r = 5.0. how do i find the following: -edge in terms of r, the lattice pt radius -face diagonal in terms of r, the lattice pt radius -body diagonal in terms of r, the lattice pt radius

    asked by Mary
  39. computers

    Determine the functional dependencies that exist in the following table; then convert this table to an equivalent collection of tables that are in third normal form: Marina, (MarinaNum, Name, (SlipNum, Length, RentalFee, BoatName) ) *Note MarinaNum is

    asked by Matt
  40. Math

    A triangular number is a number that can be represented by dots arranged in a triangular shape. The first four triangular numbers are 1, 3, 6, 10. What is the 10 triangular number? The 20th? The 100th?

    asked by Marie
  41. Global History

    How did transportation improved during the Industrial Revolution?

    asked by James
  42. Chemistry

    Answer the following for a face centered unit cell. r = 6.0. how do i find the following edge in terms of r, the lattice pt radius face diagonal in terms of r, the lattice pt radius body diagonal in terms of r, the lattice pt radius

    asked by Mary
  43. Physics

    The Moon has a mass of 7.36 1022 kg and a radius of 1.74 106 m. (a) What is the acceleration due to gravity on the Moon? b) How much would a 4.03 kg person weigh on this planet

    asked by Anonymous
  44. Physics

    The drawing shows a large cube (mass = 48 kg) being accelerated across a horizontal frictionless surface by a horizontal force . A small cube (mass = 2.1 kg) is in contact with the front surface of the large cube and will slide downward unless is

    asked by eric
  45. Chemistry

    Benzene has a vapor pressure of 100.0 Torr at 26°C. A nonvolatile, nonelectrolyte compound was added to 0.309 mol benzene at 26°C and the vapor pressure of the benzene in the solution decreased to 60.0 Torr. What amount (in moles) of solute molecules

    asked by Angelica
  46. science

    Answer the following for a body centered unit cell. Answers should be numerical, set r = 7.0. edge in terms of r, the lattice pt radius__? face diagonal in terms of r, the lattice pt radius__? body diagonal in terms of r, the lattice pt radius__?

    asked by HELP!
  47. History

    how were the economic conditions in France and the American colonies before their revolutions similar and how were they different?

    asked by Britanya
  48. math 5th grade

    Carolyn spent 3/4 of an hour on her math homework, 5/6 of an hour on history, and 5/12 of an hour on science. Which of the following is a true statement; a.)5/6

    asked by Anonymous
  49. IPC SCIENCE

    You see an object accelerate towards the left. Which of the following statements is correct? A. There is a net force on the object upwards. B. There is a net force on the object to the left. C. There is a net force on the object to the right. D. There is a

    asked by Anonymous
  50. Physics and Calculus

    Consider a charged ring of radius 27 cm and total charge 15 nC. We are interested in the electric field a perpendicular distance z away from the center of the ring. At what distance from the center of the ring does the electric field become maximum? Hint:

    asked by Sandra
  51. English

    what wud have been another really good Canadian song sung at the Olympics? Is this one good: Sarah Mclachlan: I will remember you I have to add as well, why I think it is good. I think that this song is good because it has a lot of deep feel in it and it's

    asked by Sara
  52. Chemistry

    You are given the following data. P4(s) + 6 Cl2(g) 4 PCl3(g) ΔH = -1225.6 kJ P4(s) + 5 O2(g) P4O10(s) ΔH = -2967.3 kJ PCl3(g) + Cl2(g) PCl5(g) ΔH = -84.2 kJ PCl3(g) + 1/2 O2(g) Cl3PO(g) ΔH = -285.7 kJ Calculate ΔH for the following reaction. P4O10(s)

    asked by Britni
  53. AP Chemistry

    The heat of reaction for burning 1 mole of a certain compound X is known to be -477.7 kJ. The calorimeter constant of the bomb being used is 2500 j/degree celsius and the initial temperature of the water is 23.2 degrees celsius. a) if 22.54 g of compound X

    asked by Jacob
  54. Chemistry

    1.) A vapor volume of 1.17 L forms when a sample of liquid CH3CN absorbs 1.00 KJ of heat at its normal boiling point (81.1 C and 1 atm). What is the heat of vaporization in KJ per moles of CH3CN? 2.) The vapor pressure of water at 25 C is 23.76 torr. If a

    asked by joseph
  55. history

    Question #1 Describe the colonization of Eastern North America in the 17th century. Who settled in the various colonies? What were their motivations for leaving their homelands? What factors influenced the patterns of colonization (i.e., who went where and

    asked by aakash
  56. Physics

    A 2.90 kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the floor is 0.320. Determine the kinetic frictional force that acts on the box for each of the following cases a)The elevator is

    asked by anonymous
  57. ethics in health care

    Managed care was introduced into the U.S. healthcare system in an effort to control costs while still providing quality healthcare to Americans (Moore, 2009). However, opponents of managed care have pointed to a potential ethical pitfall of skimping on

    asked by Anonymous
  58. world history

    how were the economic conditions in France and the American colonies before their revolutions similar

    asked by Jennavecia
  59. Geography

    #49. It has been said that Eastern Europe is a political region more than a physical region. Would you agree or disagree with this statement? You must provide a solid argument for your position. hmm...I agree that Eastern Europe is not so much a distinct

    asked by y912f
  60. 5th grade

    Which of the following is a true statement, Carolyn spent 3/4 of an hour on her math homework, 5/6 of an hour on history, and 5/12 of an hour on science.

    asked by Anonymous
  61. Social Studies (URGENT)

    Pleae help. It's urgent! 10. Why did many Native people start adapting to Victorian society? a.) Was this the only way that things could have gone between the Natives and the colonists? Explain your response. b.) Why didn't the settlers adapt to Native

    asked by John
  62. physical biochemistry

    One mole of an ideal monatomic gas initially at 300 K is expanded from an initial pressure of 10 atm to a final pressure of 1 atm. Calculate ��E, q, w, ��H, and the final temperature T2 for this expansion carried out according

    asked by mary
  63. Chemistry

    Find the unit cell (simple, bcc, fcc), type of holes where the smaller ions are found (tetrahedral, octrahedral, cubic), and number of cations and anions per unit cell for the following compounds: CdSe CsI Li2O KBr NaCl ZnS(I) i did this and i got most of

    asked by kooler
  64. Chem answer check

    Does this look correct? Thx! Write the balanced equation for the reaction between solid copper and silver nitrate, that produces solid silver and copper(II) nitrate in solution. Include your experimentally determined mole ratios for the copper and silver

    asked by Kelsey
  65. History

    Why did Theodore Roosevelt mediate the russo-japanese war?

    asked by Colby
  66. math

    Factor the four-term polynomial. mn - 15 + 3m - 5n

    asked by brittany
  67. chemistry

    This is a lengthy problem, but I really don't understand it. Any assistance given would be greatly appreciated. An analysis was done on a rock sample to determine its rubidium content. The rubidium content of a portion of rock weighing .350g was extracted,

    asked by Jane
  68. 10th grade chemistry

    I need help on solving: How many grams of water are obtained if 487.8 grams of carbon dioxide are formed?

    asked by Janet
  69. AP Chemistry

    A 500 g piece of metal at 60 degrees celsius is placed in 200g of water at 22 degrees celsius contained in a coffee cup calorimeter. The metal and water come to the same temperature at 32.5 degrees cesius. The specific heat of the water is 4.184

    asked by Matthew
  70. 7th grade essay writing

    my teacher is having us write a 6 paragraph essay about problems, i'm having trouble writing it.

    asked by peter botros
  71. English

    I need help with finding sources for my research paper. My teacher said: All of your sources should be from reputable scholarly sources, from journal articles you access via the library's online databases or from books that you access in the library.

    asked by pam
  72. 6th grade

    Doyou have 6 grade text book?

    asked by carla
  73. chem

    How much heat is required to raise the temperature of 200 g CH3OH from 20 to 30 degrees and then vaporize it at 30 degrees. The molar heat capacity of CH3OH is 81.1 J/Mol/K. Okay...the answer is approximately around 254. It was a homework problem. The

    asked by joseph
  74. Chemistry

    I don't understand these two questions. Any help on how to figure this would be great. Thanks. 1. Write the equation for the decomposition of the hydrate, MgC*XH₂O 2. Write the equation for the decomposition of the hydrate, CuSO₄*XH₂O.

    asked by Matt
  75. Biology

    Under which condition can you hold your breath longer? First breathe in as much as you can and hold your breath, and time it. (Lungs completely inflated) After, breathe out as much as you can, hold your breath, and time it. (Maximal expiration). Which

    asked by so CONFUSED!
  76. math

    expand and simplify (2x+5)(3x-4)

    asked by keisha
  77. Science-Help

    What happens as a comet approaches and moves away from the sun? As a comet approaches towards the sun it becomes warm. Then as it moves away from the sun, it forms a glowing tail and extends over 100 million km. Please tell me if this is correct, thanks

    asked by Sara
  78. 11th grade economics

    Why is it that the reward for capital is interest? I don't get how the business is rewarded interest, isn't it the banks?

    asked by Johnny
  79. Chemistry

    Based on the balanced equation 2Ba + O2 → 2BaO calculate the number of BaO formula units formed when 54 Ba atoms and 21 O2 molecules react?

    asked by Leslie
  80. trig

    we haven't discussed log properly yet! It's supossed to be on the RAT, but IDK. . . this is about as much as I know: if you have log(X) 2401 = 4, then x equals 7. One of the simulated questions asks to express 3log(2) p + 4log(2) Q - 2log(2) R. please

    asked by Cutie_27
  81. business

    why are active listening skills important for college success?

    asked by lynne
  82. history

    Question #2 What were the three major regional groupings of colonies? How did their societies and cultures develop in the 17th and 18th centuries? What were the major factors that affected such development? What were the differences in the economic bases

    asked by aakash
  83. Physics

    A skydiver, who weighs 650 N, is falling at a constant speed with his parachute open. Consider the apparatus that connects the parachute to the skydiver to be part of the parachute. The parachute pulls upward with a force of 620 N. You have to consider the

    asked by Max
  84. English 1

    I need help with my outline for my character anaylsis. I am doing my research paper on Ethan Frome, and I can't come up with alot of things to include in my essay. Help Please!!!

    asked by pam
  85. English

    Can you check the following sentences for me, please? Can you please tell me a synonym for the words in parentheses? Thank you. 1)Alonso is shipwrecked near an enchanted island with his son and the Duke of Milan. 2) The tempest was raised (synonym? caused,

    asked by Franco
  86. Integers

    The larger of two positive integers is five more than twice the smaller integer. The product of the integers is 52. Find the integers.

    asked by Camile
  87. Math

    In a month a stereo store sold %17,500 worth of VCRs which, was 28% of its total sales. Find the total sale for the month. Explain. Thanks! (:

    asked by Yasmin
  88. mth 157

    Determine which types of display could be used to illustrate the given data. 4) The midterm test scores for the seventh-period typing class are listed below. 85 77 93 91 74 65 68 97 88 59 74 83 85 72 63 79 Which of the following types of display could be

    asked by tom
  89. Math

    1. Find the angle of smallest positive measure coterminal with an angle of the given measure: a. 520 b. - 75 2. Points A (1,0) and B (.6,-.8) are points on a unit circle O. If the measure of angle AOB = 0 {w/ a line in the middle} Find a. sin 0 b. cos 0 c.

    asked by Priscilla
  90. Science

    How were asteroids formed? Were they just formed by melted materials in space? were they formed in the asteroid belt?

    asked by Sara
  91. 4th grade

    explain how farms today are different than medieval farms . Compare the farms. list a lot of differences and same things . please help!

    asked by Saira
  92. english

    what are the literary devices in the song " if today was your last day" by nickelback?

    asked by marissa
  93. Math

    The perimeter of a rectangle is 74 centimeters. The width is doubled and the length is halved. The new rectangle has a perimeter of 76 centimeters. Find the dimensions. Okay, so in class we're learning about Systems of Equations. What are the equations for

    asked by Sammi
  94. History

    how were the economic conditions in France and the American colonies before their revolutions similar and different

    asked by Jennavecia
  95. Biology

    40. DNA fingerprinting is used in many situations to help identify individuals. Analyze the situation below before answering the questions that follow. A man was attacked and robbed, but remembers nothing of the incident because he fell and hit his head.

    asked by mysterychicken
  96. Physics

    A pilot stops a plane in 484 m using an acceleration of -8 m/s2. How fast was the plane moving before the breaking began? Thanks.

    asked by Jake
  97. Chemistry

    If you have 108 grams of Al and 108 grams of O subscript 2 which reactant is the limiting reactant?

    asked by Nick
  98. Algebra

    A square and an equilateral triangle has the same perimeter. Each side of the triangle is 5 m less than twice the length of each side of the square. How long is each side of the square? Define the variables and write a system of equations. Thx! (:

    asked by Jenica
  99. science

    Scientists know that water is nonliving because a) it gets energy from food b) it reproduces itself c) it responds to its environment d) it cannot make itself move I think letter c but I'm uncertain. Thanks

    asked by JADEN
  100. Global History

    How did the French revolution inspired Latin America?

    asked by Jennifer
  101. math

    1/3k-4=1

    asked by adrian
  102. chem

    Benzaldehyde, C6H5CHO}, has a normal boiling point of 179.0 C and a critical point at 422 C and 45.9 atm. Using a phase diagram, estimate its vapor pressure at 125 Degrees (I'm putting this back up again. Since I still didn't understand it but the answer

    asked by joseph
  103. sciencew

    Scientists know that water is nonliving because a) it gets energy from food b) it reproduces itself c) it responds to its environment d) it cannot make itself move Is d the answer?

    asked by JADEN
  104. English

    What pronoun is used for the "Empire State Building"?

    asked by Brian
  105. social studies

    explian how the great depression and WW1 affected the united states. how was Florida impacted by WW1?

    asked by Anonymous
  106. Calculus

    "Find f'(a) for f(x)=(1+2x)/(1+x)" I got 2, but the answer is 1/(1+a)^2. How do I get that??

    asked by Stuck
  107. business

    health reocrds specialist rhonda kingsley is a creative sort who is a social gadfly with a preference for multi-tasking. her superior should be most concerned about rhonda's: a. wearing earphones and listening to music while working b. refusing to carry on

    asked by shay
  108. Chemistry

    Based on the balanced equation 2NBr3 + 3NaOH → N2 + 3NaBr + 3HOBr calculate the number of NaBr formula units formed when 126 NBr3 molecules and 192 NaOH formula units react?

    asked by Josh
  109. Biology

    Under which condition can you hold your breath longer? First breathe in as much as you can and hold your breath, and time it. (Lungs completely inflated) After, breathe out as much as you can, hold your breath, and time it. (Maximal expiration). Which

    asked by so CONFUSED!
  110. Biology

    40. DNA fingerprinting is used in many situations to help identify individuals. Analyze the situation below before answering the questions that follow. A man was attacked and robbed, but remembers nothing of the incident because he fell and hit his head.

    asked by mysterychicken
  111. algebra

    Systems of Equations -x+4y = 8 2x-3y = -16 x= -17.6 y= -2.4 Is this right?

    asked by Renee
  112. math

    Use substitution to solve: 3x-2y=2 x-3y=4

    asked by Crystal
  113. trig

    how do you graph the equation y=-2cosx?

    asked by Cutie_27
  114. 5th grade Math

    the food budget for each month is $540 which is 15% of their household income What is their household income? How?

    asked by Quinn
  115. Science-Help

    How were asteroids formed? Were they just formed by melted materials in space? were they formed in the asteroid belt?

    asked by Sara
  116. Geometry

    polly wants to build a rectangular dog pen for her poodle. She has 24ft of fencing in 1 ft sections. What are the dimensions of the best dog pen for polly's poodle? explain Please help my teacher never explains just hands out problems

    asked by Courtney
  117. history

    Question #3 Describe European effort at exploration and colonization of the "new world" 1000 AD to 1732. Focus on the territory comprising modern-day United States and Canada.

    asked by aakash
  118. Physics

    A bike is hanging from a hook in a garage. You need to consider the following forces. (a) The force of the Earth pulling down on the bike. (b) The force of the bike pulling up on the Earth. (c) The force of the hook pulling up on the bike. (d) The force of

    asked by Max
  119. Physics

    An object with charge qo = 1.5μC and mass 0.7 g starts from rest at the +6V equipotential line. Calculate its change in potential energy and speed when it reaches the +2V line.

    asked by Amy
  120. math

    A prescription calls for the 4% Pilocar with a Sig. of "gtt i OU tid". How many 15-ml bottles should be dispensed for a 90 days supply if the eye drop bottle delivers 20 drops per ml? Somehow, it is a bit confusing. I tried: 1 bottle/ml soln * ml soln/20

    asked by Marc
  121. geometry

    Polly decides to use a wall of the house as one sideof the rectangular dog pen. She plans to use the 24 ft. of fencing (1 ft. sections) for the other 3 sides. What are the dimensions ofthe best dog pen for polly's poodle? Explain

    asked by Courtney
  122. chemistry

    for NaTl, is the unit cell of it based on the repetition of body centered cubic and the holes in this unit cell are octahedral? how many of each of the 2 cubes drawn for NaTl are required its unit cell? is it 8?

    asked by eng
  123. BIOLOGY

    if a woman is a carrier for a disease (Hh) and a man has a 50% chance of being a carrier for that disease, what is the probability that they have a child with that disease? i've figured out that if the man IS a carrier, there is a 25% chance and if the man

    asked by amy
  124. Math

    How to convert: cm to mm m to cm m to mm m to km km to m

    asked by MJ
  125. geometry

    WHAT IS BASE

    asked by KARINA
  126. chem. AP

    Please help? How would you convert 300 torr to mm hg?

    asked by Cindy
  127. Year 11 Maths

    Without aid of tables/caulculator, find all values of A between 0 degrres and 360 degrees. cosec A= sec A How you do this question?

    asked by Johnny
  128. Chemistry

    I still need help with this problem... Calculate the concentration of the solution the molality of hydroxide ions in a solution prepared from 9.16 g of barium hydroxide dissolved in 179 g of water I do not know how to approach this...I keep doing something

    asked by Trixie
  129. Science

    What happens as a comet approaches and moves away from the sun? As a comet approaches towards the sun it becomes warm. Then as it moves away from the sun, it forms a glowing tail and extends over 100 million km. Please tell me if this is correct, thanks

    asked by Sara
  130. chemistry

    What is the density of UF6 (subscript) gas? What volume would 2.35 moles of this gas occupy? (Assume STP)

    asked by Ralph
  131. Science

    A tiltmeter is a volcanic monitoring tool that measures _____. a)vibrations and tremors in the ground b)smoke plumes c)ground swelling d)water levels do you mind exp it a little bit better thanks

    asked by nick
  132. information technology

    describe the following transmittion medium:coaxial cable fibre optic cable twisted pair cable

    asked by Kadeena
  133. Conflict Management Communications

    How do we balance the scholarship and conventional wisdom that we should deal with problems ("Never go to bed angry") versus let them slide ("The secret to long relationship is a short memory")?

    asked by Breanna
  134. Chemistry

    Benzene has a vapor pressure of 100.0 Torr at 26°C. A nonvolatile, nonelectrolyte compound was added to 0.309 mol benzene at 26°C and the vapor pressure of the benzene in the solution decreased to 60.0 Torr. What amount (in moles) of solute molecules

    asked by Angelica
  135. Science

    Why might a major volcanic eruption lead to coller temps over a large area around the volcano?

    asked by Hannah
  136. business

    technology manager sharry jones is reviewing a new EMR software program for the hospital where she works, and judges it to be more user-friendly than othere she has tested. in other words, sharry likes this one's" a. processor b. speed and power c.

    asked by shay
  137. Math

    Jenna and Tony need quarters for bus fare. Jenna has 3 x as many as Tony. Together they have $11.00 in quarters. How many coins does each have?

    asked by Joshua
  138. Science-Help

    How is a meteor and astroid similar? Meteors and asteroids are both rocks from space that sometimes hit the earth. They may be made from ice. How are they different? Meteors are known as shooting stars. They move very fast across the sky. Asteroids are

    asked by Sara
  139. chemistry

    how many grams of lithium metal is required in 410 grams of CA(NO3)2

    asked by Anonymous
  140. trig

    How do you find the asymptote of an exponential function? for example: f(x)= 2^x + 3

    asked by Pinasgurl
  141. math

    20 = 37t - 16t^2

    asked by magyc
  142. chemistry

    When 0.949 g of CaO is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 389C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. what is molar heat of reaction, Hrxn,

    asked by blasting
  143. university studies

    What does sense of purpose mean to you

    asked by biggdogg
  144. algebra topics

    - 7/8 - 4/5 simplify

    asked by stuart
  145. European History

    I need a legitimate resourse or resources on Catherine the Great. I have one already, however it is a book and i need some documents from the internet.

    asked by Anonymous
  146. 7th grade Literacy

    What are the characteristics that make a good class president? Please answer!!!

    asked by Elizabeth
  147. 10th grade

    How do you balance solubility equation problems?

    asked by sherita
  148. physics

    How will the weight of a 20kg object change if it was in a lift that accelerates downward at 4 meters per second squared?

    asked by Mpumi
  149. Social Studies (URGENT)

    10. Why did many Native people start adapting to Victorian society? Can someone please help me answer this question? Thank you very much.

    asked by John
  150. information technology

    describe the network of presentataion of rind,star and bus.

    asked by Natalia
  151. biology

    A seven-year-old boy breaks his tibia and requires immobilization by a hard cast for six weeks until the break heals. A potential consequence of this therapy is atrophy of the

    asked by Anonymous
  152. alebra 1

    y+1/y-1 - y-1/y+1 = 8/3 I know that I have to multiply by the LCD of the denominaters, but what is the LCD of y-1, y+1, and 3????? PLEASE HELP!! ~aShLeY

    asked by Ashley
  153. college

    if motivation consists only of drive-reduction, what is the perfect state of a human being?

    asked by kathy
  154. 11th grade economics

    Since capital are means of production e.g. machinery, how does that relate to the reward being interest? Business owners borrow money and pay interest but how does capital goods reward interest to business owners?

    asked by Jim
  155. Math

    x-4 multiplied by x-3 equals what? 2x-1 multiplied by x-3 equals what? I tried doing each problem each time and whenever it is in fraction form since that is how it is suppose to be written, it doesn't look right. What could I be doing wrong?

    asked by Crystal
  156. Math

    write the expression as a function of an acute angle whose measure is less than 45. a. sin 80 b. sin (-100)

    asked by Priscilla
  157. English

    I need help with finding sources for my research paper. My teacher said: All of your sources should be from reputable scholarly sources, from journal articles you access via the library's online databases or from books that you access in the library.

    asked by pam
  158. social studies

    Approximately what percentage of Th Colonial population were patriots, neutral, loyalists?

    asked by Rachel
  159. AP World History

    I need to write an essay comparing how North American racial ideologies and their effects on society with Latin American/Caribbean racial ideologies and their effects on society. Can't find annnyyythinggg on Latin American/ Caribbean racial ideologies and

    asked by Rose
  160. geography

    describe a command economy?

    asked by aprilynn
  161. Math

    3x-8y=-10

    asked by Sam
  162. information technology

    discuss the following wireless transmittion medium:satillite signal microwave link infrared signal

    asked by Kadeena
  163. English

    Thank you for your suggestion. Can you just tell me if the grammar is OK in all sentences?

    asked by Franco
  164. Global History

    How does the Enlightenment reflect societal values of the ancient Greeks?

    asked by Jennifer
  165. geometry

    what is the perimeter of a regular decagon if one side measures 13.5 cm?

    asked by Sharnice
  166. english

    what is a god teacher

    asked by laura
  167. Chemistry

    If you have 4.00 moles Al(aluminum), how many moles of O (oxygen)subscript 2 are needed for a complete reaction?

    asked by Nick
  168. Pre-Cal(Please help!!)

    Consider the function y=arcsin x. a) Use a grapging utility to complete the table. x = -1 -0.8 -0.6 -0.4 -0.2 y = ? ? ? ? ? I am not sure what to plug into the calculator to get the answer.

    asked by Hannah
  169. Judges

    Explain possible consequences of ineffectiveness

    asked by Smiley
  170. Science

    What happens as a comet approaches and moves away from the sun? As a comet approaches towards the sun it becomes warm. Then as it moves away from the sun, it forms a glowing tail and extends over 100 million km. Please tell me if this is correct, thanks

    asked by Sara
  171. 8th grade

    Given the function y = 8x - 11, which set of numbers completes the table?

    asked by John
  172. Science

    Both comets and planets orbit the sun. How do their orbits differ? Comets orbit elliptically, and planets orbit more circularly. Please correct me if Im wrong, thanks

    asked by Sara
  173. english

    Can you explain why the quotation mark was in putted on this sentence: "Notice,"the professor told the class, "Cassius' choice of imagery when he asks, 'Upon what meat doth this our Ceasar feed that he is grown so great?"

    asked by terri
  174. Chemistry (creativity)

    Hey everyone. Well the part I need help in isn't exactly the chemistry part. My assignment was to research an element, and at the end, come up with some creative picture/cartoon. The problem is... I'm not exactly the creative type. My element was Mercury,

    asked by Jackie
  175. 9th grade

    I need a good thesis statement for a research paper about agriculture as a career.

    asked by Seth
  176. science

    Why are models useful? a) models work exactly like the things they present b) Models are the first stage in any experiment c) models are better than charts or graphs d) models are the first step in creating a prototype

    asked by JADEN
  177. business

    the fact that 60 percent of eastside clinic's patients have income below the poverty line illustrates that community's a. demographics b. population statistics c. patient financial transactions d. clinical record i think the answer is a. demographics

    asked by shay
  178. Algebra

    I am having such a hard time in this class. Hopefully someone here can help me to understand some of what they are trying to teach me. I have a problem here and have been working on it for about an hour now and I can not figure it out. I need to come up

    asked by Stephanie
  179. social studies, 4 thgrade

    what type of games do village people now play.

    asked by Saira
  180. geography

    Taken as a whole, what would you say is the single most pressing problem found in Latin America or South America? What possible solutions can you develop?

    asked by Shelby
  181. calculus

    Evaluate the limit: lim as x -> -2 (x^4 - 16) / (x+2)

    asked by Anonymous
  182. math

    Sam has a savings account that increased in value over a twelve month period from $8765.00 to $9006.06. He made no deposits or withdrwals in that time. What percent interest did he receive for the 12 month period?

    asked by Maddie
  183. synonym

    which word is a synonym of verbiage? A}terse B}wordiness C}curt D}concise

    asked by matty
  184. English

    Identify the parallel element in the sentence? Eating an animal has not always been an automatic or an everyday affair;it has tended to be done on solemn occasions and for a specific treat.

    asked by layla
  185. business

    why are active listening skills important for college success?

    asked by Lynne
  186. Science-Help

    Both comets and planets orbit the sun. How do their orbits differ? Comets orbit elliptically, and planets orbit more circularly. Please correct me if Im wrong, thanks

    asked by Sara
  187. ethics

    What are some ways to encourage cultural competence in staff members

    asked by Anonymous
  188. Global History

    How did nationalism cause revloution?

    asked by Ashley
  189. 11th grade

    Why is square root of x squared = absolute x? Is it because absolute x = -x and x?

    asked by chris
  190. science

    What equipment and sets is needed to design an electroplating kit for 5th grade learners?

    asked by Yasaar
  191. Chemistry

    What are the products when you add water to 2-methyl-2-pentene?

    asked by Jeff
  192. Chemistry

    How to calculate the density and viscosity of a 10 % by wt salicyclic cid solution.

    asked by arp
  193. business

    all of the following are advantagof EMr over traditional record keeping systems except: a. saving sapce and paper b. being more secure and less expensive up front c. allowing near instantaneous recall of patient information d. facilitating global sharing

    asked by shay
  194. business

    which of the following is an example of an alphanumeric ID code a. A34GQ45 b. 246810 c. AjeROe d. arles*~# i think the answer is a. A34GQ45

    asked by shay
  195. Math for teaching.

    I need help finding examples of discrete models used in addition. Can you explain this to me or show me a cite that might help. Thanks

    asked by Confused
  196. math

    is this site free and you help my child with her math? she having a hard time with this subject

    asked by karen
  197. business

    as dr. andrea mogan listens to allison sanchez describe her ailments, she jots down her insights and treatment ideas. a health records specialist will later enter these _______ into allison's electronic medical record a. diagnostic reports b. medication

    asked by shay
  198. Science-Urgent

    Can someone please have a moment to look at my other science posts, Please and thank you :-)

    asked by Sara
  199. trig

    Is y equal to cotx, tanx, cosx, or sinx if its graph is periodic with a period of 2pi, an amplitude equal to 1, and it passes through the origin?

    asked by Cutie_27
  200. chemistry

    Find the number of K atoms, C atoms, and O atoms in 95.5g of K2Cr2O7. (Potassium 2, Chromium 2, Oxygen 7).

    asked by Jack
  201. physics

    A cable is lifting a construction worker and a crate, as the drawing shows. The weights of the worker and crate are 930 and 1640 N, respectively. The acceleration of the cable is 0.620 m/s2, upward. (a) What is the tension in the cable below the worker?

    asked by tiffany
  202. English

    Can you check these sentences, please? In particular, let me know if the words occurring before the parentheses are OK. 1) Jane Austen disapproves of relationships based only on wealth or on sudden violent passions.According to her, a good marriage should

    asked by Franco
  203. Physics

    CAN ANYONE HELP ME WITH PHYSICS!!!!!!!!!!

    asked by anonymous
  204. Global History

    How did nationalism inspire unification movements?

    asked by Ashley
  205. Chemistry

    Answer the following for a face centered unit cell. how do i find: -# atoms / 1 unit cell -coordination #

    asked by Mary
  206. English

    I looked up the synonyms in the thesaurus. Can you please check if everything is correct? 1) The tempest is caused by Prospero. 2) Prospero confesses Miranda (or to Miranda?) that he was .... 3) I couldn't find a synonym for "set adrift" : Prospero was set

    asked by Franco
  207. Math

    Solve. Do not use decimals. x^2+xy=3 3x^2+2xy-y^2=7

    asked by JavaJoes
  208. Social Studies

    I am looking for facts about Theodore Roosevelt for a project.

    asked by Nicholas
  209. algebra

    tenequal scores have a mean of 30. if one score is doubled, and the other nine remain the same, what is the mean of the new set of scores?

    asked by sherene
  210. math

    A girl has a score of 59 and wants to know how to get a mean of 69. She would like to use two more scores to get that mean. What numbers did she use? Please help!

    asked by nicole
  211. Finance

    How to compute the cost of cash flow 2/10, net 40?

    asked by Kari
  212. music

    Please help.. Can anyone please tell me who was the first author of the lyrics"Five Little Monkeys" Thank You

    asked by Barb
  213. information technology

    discuss the concept of teleconferencing and telecommuting.

    asked by Natalia
  214. biology

    a hibiscus plant was attacked by mealybugs which completely destroyed them.what is the relationship between the mealybug and the hibiscus plant.

    asked by Natalia
  215. business

    technology manger sharry jones is reviewing a mew EMr software program for the hospital where she works, and judges it to be more user-friendly than others she has tested. in other words, sharry likes this one's: a. processor b. speed and power c.

    asked by shay
  216. English

    I forgot to include the following statements. Thank you very much for all, 1) The three main themes of the play are forgiveness, reconciliation and the element of magic. Prospero forgives his brother for deposing him and takes possession of his lost

    asked by Franco
  217. information technology

    what are some of the negative impact of sharing information on a network?

    asked by Natalia
  218. biology

    a hibiscus plant was attacked by mealybugs which completely destroyed them.the mealybug was said to have thrived because it was not in its natural habitat.what is the likely effect of introducing an organism,like the mealybug,into a new habbitat?

    asked by Natalia
  219. health

    Are calories good for health? Why or why not. Thanks Alot!

    asked by Samantha
  220. Health ????

    This is going to be a odd question. My dad wears contacts most of the time. When he is not he will wear his glasses. He is nearsighted. What he wants to know is can he use the same prescrition for his contacts on his glasses. He does does not want to go to

    asked by cathy
  221. lotions

    what kind of moisturizers will melt faster overtime ?

    asked by james
  222. Business

    Of the note-taking skills, why would the L-Star system work better for someone if that's how they choose to take notes?

    asked by lynne
  223. Health - independent learning

    I don't get this statement that I have to do for a personal survey. "I take in about the same number of calories that I burn."

    asked by Anonymous
  224. Calculus (repost)

    Find the limit: lim {[1/(2+x)]-(1/2)}/x as x->0 How do you remove the complex fraction??? (or just complex fractions in general, I have trouble with them...) Thank you!

    asked by Momo
  225. Chemistry

    Benzene has a vapor pressure of 100.0 Torr at 26°C. A nonvolatile, nonelectrolyte compound was added to 0.309 mol benzene at 26°C and the vapor pressure of the benzene in the solution decreased to 60.0 Torr. What amount (in moles) of solute molecules

    asked by Angelica
  226. Health

    Which one of the following subcategories of the E/M section has separate codes for new and established patients? A. Office or Other Outpatient Services B. Hospital Observation Services C. Initial Inpatient Consultation D. Emergency Department Services

    asked by Joe
  227. English

    You forgot to check these other sentences. I really hope you can go through them, too! 1)Can you check the following sentences for me, please? Can you please tell me a synonym for the words in parentheses? Thank you. 1)Alonso is shipwrecked near an

    asked by Franco
  228. english

    can someone help me with grammar: Notice, the professor told the class, Cassius' choice of imagery when he asks, Upon what meat doth this our Ceasar feed that he is grown so great?

    asked by terri