Questions Asked on
April 26, 2007

  1. physics

    At high noon, the Sun delivers 1000W to each square meter of a blacktop road. If the hot asphalt loses energy only by radiation, what is its equilibrium temperature? so I know that the formula to find the RATE OF RADIATION= the constant (5.6696 x 10^-8

    asked by jean
  2. more physics.

    What change in entropy occurs when a 27.9-g ice cube at -12 C is transformed into steam at 115 C? Add the entropy changes due to: (1) heating the ice to 0C, (2) melting the ice, (3) heatng the water from 0 to 100 C, and (4) Evaporating the liquid water.

    asked by jean
  3. A. Production

    A toy manufacturing makes its own wind-up motors, which are then put into its toys. While the toy manufacturing process is continous, the motors are intermittent flow. Data on the manufacture of the motors appears below. Annual demand (D)=50,000 units

    asked by D.Martin
  4. Geometry

    I had to fill out a chart stating the properties of certine shapes(parallelograms). Some of them i put to many properties please tell me witch ones i have wrong. The properties to select from: 1-Opposite sides are parallel (both pair) 2-Opposite sides are

    asked by Roxxxxxxxxx
  5. physics.

    Heat engine X takes four times more energy by heat from the hot reservoir than heat engine Y. Engine X delivers two times more work, and it reject seven times more energy by heat to the cold reservoir than heat engine Y. Find the efficiency of heat engine

    asked by jean
  6. Physics

    A 6 kg rock is suspended by a massless string from one end of a 6m measuring stick. What is the mass of the measuring stick if it is balanced by a support force at the 1m mark? answer in units of kg. Thanks for any help Rather than just posting the

    asked by Stu
  7. chemistry

    Which solvent will dissolve more in given solute: 1. Ethylene glycol (HOCH2CH2OH) in hexane(C6H14) or H2O 2. Diethyl ether (CH2CH2OCH2CH3) in H2O or CH3OH? 3. NaCl in CH3OH or CH3CH2CH2CH2OH I know that like dissolves like. Therefore the molecules with the

    asked by Gabriela
  8. math

    the height of a triangle is 4 inches greater than twice its base. the area of the triangle is 168 square inches. what is the base of the triangle? Area=1/2 B*H= 1/2 B (2B+4) solve for B h = 4 + 2b b = ? A = (b*h)/2 = 168 168 = [b(4+2b)]/2 168 = (4b +

    asked by help me again(last one)
  9. math

    how many times does the graph of y= 2x squared -2x+3 intersect the x-axis? It intersects the x-axis when y = 0. So: y = 2x^2 - 2x + 3 0 = 2x^2 - 2x + 3 Its not factorable so you'll have to use the quadratic equation to solve for x.

    asked by help me again
  10. Advanced Production

    Montegut Manufacturing produces a product for which the annual demand is 10,000. Production averages 100 per day, while demand is 40 per day. Holding costs are $1.00 per unit per year;set-up costs $200.00. If they wish to produce this product in economics

    asked by D.Martin

    Do a country's imports completely measure the market potential for a product? Why or Why not? Most countries measures imports and exports markets, simply because the product that are imported or exported becomes part of that country GDP.

    asked by YVETTE
  12. Music/choir

    What do the following notes look like? quarter note ,half note,eighth note ,whole note also how many beats do they receive? If a whole note receives 4 beats to a measure.... then you can easily figure

    asked by Lesley
  13. Physics

    Light is an electromagnetic wave and travels at a speed of 3.00 108 m/s. The human eye is most sensitive to yellow-green light, which has a wavelength of 5.58 10-7 m. What is the frequency of this light? Ever heard of the equation (wavelength) x

    asked by Mary
  14. Advanced Production

    A time study od a certain service task found a average cycle time of 15 minutes, with a standard deviation of 5 minutes. These figures were based on a sample of 100 measurements. Is the sample large enough that we are 95% confident that standard time is

    asked by D.Martin
  15. math

    What is the median of this data set? 33, 34,27, 42, 54,21, 62, 62. thank you Put the data set in order: 21, 27,33, 34, 42, 54, 62, 62 Median= (34+42 )/2

    asked by Mary
  16. math

    marcy has a total of 100 dimes and quarters. if the total value of the coins is $14.05, how many quarters does she have? You need two equations to substitute into each other. You need one for the total number of coins, and one for the amount. d=# of dimes

    asked by help me
  17. Economics

    3. Starting from short-run equilibrium, the following occurs: Labor productivity rises, and individuals expect higher (future) incomes. What will be the effects on the price level, Real GDP, and the unemployment rate in the short run? a.Real GDP will fall,

    asked by Sarah
  18. physics

    why are ice packs at 0 degree better for cooling a sprained ankle than similar sized packs containing water at 0 degree? thanks Ice has much more thermal capacity to cool. Consider the heat that has to be removed at 0C to turn to ice, 80cal oer gram.

    asked by san
  19. ENGLISH Literature

    In the poem " Disembarking at Quebec " what does I am a word in a foreign language means. Here are my thoughts: To me it means that I will be a stranger in a place that I don't know or don't belong. Thanks Much. Thank you for using the Jiskha Homework Help

    asked by DANIELLE
  20. Economics

    3. Starting from short-run equilibrium, the following occurs: Labor productivity rises, and individuals expect higher (future) incomes. What will be the effects on the price level, Real GDP, and the unemployment rate in the short run? a.Real GDP will fall,

    asked by Sarah
  21. geometry

    the volume of a larger prism is 128 cubic cm. if the prisms are similar with linear ration of 4:3, what is the volume of the smaller prism? We have a theorem that says The volumes of similar objects are proportional to the cubes of their sides. So let the

    asked by Emily
  22. Advanced Production

    The data in the following table represent time-study observations on a new operation with three work elements. On the basis of these observations, find the standard time for the process. Assume an 8% allowance factor. Element-1,2,3. Performance

    asked by D.Martin
  23. Physics -

    The work function of cesium surface is 2.0eV (a)find the maximum kinetic energy of the ejected electrons when the surface is illuminated by violet light with wavelenght = 4.13 x 10^3 Angstroom unit h = 6.63 x 10^9-34)Js (b) what is the threshold wavelenght

    asked by Sola
  24. Chemistry

    Completion Mole ratios from balanced equations may be used to solve problems with other units such as numbers of ______ and _______ of gases at STP. The _______ from the balanced equation are used to write conversion factors called ________. grams and

    asked by Bryan

    Hi. I got some confusing info in regards to #23 23. When legal issues have arisen out of foreign policy disputes between the President and Congress, the Supreme Court has generally _________. A. favored Congress B. favored the President C. refused to

    asked by Suzi
  26. Economics

    3. Starting from short-run equilibrium, the following occurs: Labor productivity rises, and individuals expect higher (future) incomes. What will be the effects on the price level, Real GDP, and the unemployment rate in the short run? a.Real GDP will fall,

    asked by Sarah
  27. crystal, jesse, or whoever

    You are on the edge of being banned from this website. Your IP address has been noted and will be reported to your provider if this continues. Please stop posting now.

    asked by Writeacher
  28. chemistry

    Hi I did some tests with the litmus paper, and I would like to know if they are correct:) Thing tested What I got *distilled water neutral *liquid soap Distilled water should be neutral. You didn't type the results of the pH test on liquid soap. It could

    asked by claudia
  29. History

    Linda, we do not do your homework for you. These sites may give you some ideas. We will be happy to proofread, and give you further suggestions after you have come up with YOUR answers.

    asked by GuruBlue
  30. chem

    If the levels of mercury are the same in both sides of a u-tube, what must be true of the gas in the manometer i said: The gases in contact with the two sides of the manometer are at equal pressures. That is true.

    asked by mic
  31. Algebra

    Find the slope and the y-intercept. y=5x I know the slope would be 5, but what would the y-intercept be??0 Graphing it is always a good way to check. Remember that y=mx+b b is the y intercept. Is there is no b then it would be zero. The other way to find

    asked by jessica
  32. physics

    a 3.55 kg sample of an alloy is heated to 295 degree and plunged into an aluminium vessel containing 10.0L of water. the initial temperature of the vessel and water is 19 degree.the mass of the aluminium vessel is 2.1 kg and the specific heat of aluminium

    asked by Twinkle
  33. history

    What set up regional courts for the U,S with 16 judges and other officials? You are posting a lot of questions. Try this: Post with it your thinking, we will be happy to critique. Marbury v. Madison Marbury v. Madison No Marbury vs Madison was the concept

    asked by Mack
  34. Physics

    The mass of a string is 6.0 x 10^-3 kg, and it is stretched so the tension in it is 195 N. A transverse wave traveling on this string has a frequency of 260 Hz and a wavelength of 0.60 m. What is the length of the string?

    asked by Mary
  35. bartlett hill,math

    add the like terms together.a+b+a+2b Okay. Well, the questoin says to add the like terms together, that means add the A's together and add the B's together. a+b+a+2b Alright, so your a's and your first b don't have a number in front of them. That means the

    asked by kadeisha

    You have been extremely helpful. I rethought # 15 and # 29. Are they both A? Can you please help me with my final group of questions, then I won't bother you anymore. I will begin to study. Thank you. 23. When legal issues have arisen out of foreign policy

    asked by Suzi
  37. economics

    what makes a 100 dollar bill worth 100 dollars? It's the promise of the government to back this bill, if necessary. It's also the agreement of the people to accept this bill as legal currency.

    asked by Jon
  38. Us history

    What happened at the demonstrations in albany,georgia and birmingham and talk about the role of young people...i don't rly want an answer talking bout all 3 but like a summary of them thanks Check out these sites for information about the protests in

    asked by Phil
  39. More About Buddha.....

    I just can't get enough of Buddha.... please give me more information about Buddha and his accomplishments..... what did Buddha eat while he was sitting under the Bodhi Tree? Why is Buddha portrayed as being overweight, anyway? He would have been pretty

    asked by Tyler
  40. General chemistry ligand

    Hello. I have a question about ligands. How do you figure out how many ligands a central metal cation can have? For example, Cu^2+ and NH3. When they combine, it forms Cu(NH3)4^2+ Why does it form 4 ligands oppose to 6? A general rule, which isn't always

    asked by Steven
  41. Science

    Under conditions of high temperature, two protons could combine to form a deuterium necleus in the following reactions: p + p ----> 2H + e+ + ve + energy Write the equation for this reaction in terms of the nucleons involved by replacing the deuteriu

    asked by Joanne
  42. MLA internet references?

    I am somewhat confused by the proper way of documenting a website in the mla style for a research paper. My textbook provides limited and poor information on this but demands it documented this way. For instance would it be correct to give the reference as

    asked by Jon
  43. Calculus

    If f(x) is a continuous function, find the constants a and b such that f(x) = { -x -3

    asked by Raj
  44. Economics

    what it meant by equilibrium in economics?how equilibirum attained? The following site has an ok defintion. (I cannot post the site: instead google economics, equilibrium, definition) Market equilibrium occurs when buyers and sellers, each acting in their

    asked by Rohit
  45. AOU

    How should the decision making process be followed in order to make good decisions to respond to the situation faced by the BBC in 2001? #1 - Remember that we don't do students' homework for them. #2 - Your question is not clear, which may be why you're

    asked by mohd
  46. Physics - Help!

    An incident light is monochromatic and of wavelenght 600nm, the kinetic energy of the electron is 2.56 x 10^(-20)J. For light of wavelenght 400nm, it is 1.92 x 10^(-19)J. Use the above information to estimate the value of Planck's constant,h and the work

    asked by Sola

    Thanks so much Ms. Sue, Guru Blue , and Write acher, especially Ms. Sue who is so specific. I have some more questions I am not sure of. Actually i have over 100 questions to study, I have already done 1/2. Any help is very much appreciated. here goes. 14.

    asked by Suzi
  48. Algebra

    An inventor of a new product believes that the cost of producing the product is given by the function C(x) = 1.75x + 7000. If the inventor charges $4 per unit, then her profit for producing and selling x units is given by the function P(x) = 2.25x - 7000

    asked by jessica
  49. algebra

    given two containers, one holding 4 gal. and the other holding 3 gal. how does one measure out two gal.? Fill the 3 gal, pour it in the 4 gal. Fill the 3 gal, then pout it int the 4 gal until filled. How much is left in the 3 gal? thank you

    asked by Ethan
  50. history

    Is it because of James Madisons urging, the election of 1800 was finally settled? or was it someone else? Election of 1800 Connecticut, Delaware, Georgia, Kentucky, Maryland, Massachusetts, New Hampshire New Jersey, New York, North Carolina, Pennsylvania,

    asked by Mack

    I cannot find these . What are the number of courts and number of judges in the: Supreme Court Court of International Trade Court of Appeals dor the Federal Circuit The Supreme Court and the Court of International Trade both have 9 judges. The Court of

    asked by Suzi
  52. Economics

    *MPC = 3/4 *change in Taxes(T) = $5 Billion *change in Government Purchases= - $12 Billion *Find the change in equilibrium Real GDP? My answer that I get is a $63 Billion fall in Real GDP. Is this correct? I too get a fall of $63B Thanks for the help.

    asked by Sally
  53. biology

    What is the function of microglia cells? Thank you for using the Jiskha Homework Help Forum. Here is a good explanation:

    asked by shea
  54. calculus

    for what value of r=4sinè have vertical tangent? In polar coordinates? Theta=90 deg is vertical. I do not know if you know how to differentiate polar coordinate equations so I changed your equation from polar to rectangular form, I don't know if that is

    asked by mary
  55. Another MLA referencing question

    How are encyclopedias listed in mla format for a bibliography. is it the same as books but with the editor instead of the author's name Thanks. It's a bit different. Go to this site - (Broken Link Removed) - and hold your cursor over CITING SOURCES, then

    asked by Jon
  56. math

    the sum of two binominals is 5x squared - 6x. if one of the binominals is 3x squared - 2x, wht is the other binominal? Subtract the second binomial from the first. 5x2 - 6x - 3x2 +2x

    asked by grandma bakes cookies
  57. AOU

    The following are potentially areas of conflict for the BBC: Producing its own programmes Competing for ratings with other television channels Being a global provider Explain why This is not a forum for us to do the homework for you. If you would like to

    asked by mohd
  58. Trigonometic

    Solving Trigonometic Equations solve for x and give the answers as a equations : ( by radian) 1)cos(sinx)=1 We know sin 2x = 2(sinx)(cosx) so (sinx)(cos)=1/2(sin 2x) So we can change your equation from (sinx)(cosx)=1 to 1/2(sin 2x) = 1 (sin 2x) = 2 But the

    asked by abdo
  59. Pre Algebra HELP

    I don't know exactly what you mean by typing like this 2y3(4x-3y). I assume that means 2y cubed (2y^3) or 2y3 times (4x-2y) That becomes 8xy3 -6y4 Expand all the parenthesis, then gather like terms, and add them. See

    asked by bobpursley
  60. social

    What were dr.martin luther king jr's tactics during the civil rights movement? He espoused non-violent methods --

    asked by Jack
  61. math

    1248tsp=?gal?qt?c how many gallon quart cup?? These conversions should help: * 3 teaspoons / tablespoon * 2 tablespoons / ounce * 8 ounces / cup * 2 cups / pint * 2 pints / quart * 4 quarts / gallon For example, there are 3x2x8 = 48 tsp per cup. If you

    asked by lisa
  62. Science

    I've got homework and i need to find out how fuses work please can some body help before monday? It's explained here: Thanks i needed that help

    asked by Mary
  63. Science

    What are some questions scientists are trying to answer about biodiversity? Thank you for using the Jiskha Homework Help Forum. Here is a good site for the background, including problems:

    asked by Shaniquwa
  64. reading

    what was the uncles name in the book Tiltawhirl John by Gary Paulsen Since this is not my area of expertise, I searched Google under the key words "'Tiltawhirl John' Uncle" to get this possible source:

    asked by mary
  65. history

    is a judicial review a : The right of the Supreme Court to rule on acts of other branches of the government? or is it something else? That is it.

    asked by Mack
  66. history

    What set up regional courts for the U.S with 16 judges and other officials?

    asked by Mack

    Can someone please help. I need to check these answers. I am studying for finals. 2. The expression that we are "one world" or part of a global community refers to the understanding that _______. A. instant communications have made the world "smaller" than

    asked by Suzi
  68. Calculus

    Create a function that has a graph with the following features: Two vertical asymptotes: x=1, x=3. One horizontal: y = -1. And x intercepts= -2, 4 how about f(x) = ((x+2)(x-4))/((3-x)(x-1)) ?

    asked by Raj
  69. Spanish

    I would like to know if my answers to the following questions are correct: ¿Qué es lo importante para tí en un trabajo? Opino que un trabajo debe ser interesante. Me gustaría un trabajo que es un desafío y pienso que es bueno si paga bien, pero este

    asked by Alice
  70. critical thinking

    what factors may influence the credibilty of a source? These sites may give you some ideas.

    asked by Desaree
  71. english 2 See line 34-54 in the play. how do marullus and flavius rubuke the people

    asked by GuruBlue
  72. history

    Who or what was claimed by an Adams appointee to fource the delivery of his commission?

    asked by Mack
  73. history

    Can you check this?: I have to # the order in which they occured. 10-The Lewis and Clark expedition leaves St. Louis 8-Thomas Jefferson authorizes Robert Livingston to offer $10 million for New Orleans and West Florida. 5-Meriwether Lewis and William Clark

    asked by Mack
  74. Calculus

    4) f(x)= { 3x^2 x< and equal 1 { ax+ b x > 1 What is the relation between a and b if the function is continuous for allof x.

    asked by Raj
  75. ENGLISH Literature

    What does the narrator in "The Secret Sharer means when he says " I was something of a stranger to myself. I think what he means is that he is so involve with himself that he did not have time for others . Am I ON THE RIGHT PATH. THANKS MUCH!!! Thank you

    asked by DANIELLE
  76. US Gov't

    On what two ground have Presidents base their power of Executive privilege ? =)

    asked by Lauren
  77. Business(Law)

    Q:What are basic concepts involved embodied in "intellectual copyright"? please help am stuck with this question:( Check these sources for a lot of information about intellectual copyright. (Broken Link Removed)

    asked by Peter
  78. history

    What is: The right of the Supreme Court to rule on acts of other branches of the government? judicial review

    asked by Mack
  79. history

    Why did Jefferson want to buy New Orleans and Flordia from the French? Thank you for using the Jiskha Homework Help Forum. Here is as ite for you:

    asked by Mack
  80. AOU

    Does Government policy constrain the ability of the BBC to respond to its situation in 2001? If so, explain how

    asked by mohd
  81. geology

    Can any one point me in the direction of website that will explain the geological timeframes that affect climate change taking into acccount history and present day. Or even give me a clue as to what I'm looking for. Thanks Thank you for using the Jiskha

    asked by jet
  82. Algebra

    write the equation of the line passing through (-6, -9) and (0, -9). Can some one help me with this please. When I tried to solve this problem I got a slope of 0 and I do not know what to do from there I notice the y is constant, so there is zero slope.

    asked by jessica
  83. Chemistry

    Are all/most organic compounds non polar? Not all, certainly. Many are non-polar. Most, I don't know. It all depends upon how you define most. Acids, acid chlorides, amines, phenols, ketones, aldehydes, and the like are polar. There are a bunch of those

    asked by Gabriela
  84. history

    Was Alexander Hamilton appointed chief justice by John Adams? or was it someone else? Since this is not my area of expertise, I searched Google under the key words "appoint 'Alexander Hamilton' Chief Justice" to get these possible sources:

    asked by Mack
  85. history

    Who was Jefferson's vice president?

    asked by Mack
  86. history

    What was called "godless" by Federalists? Since this is not my area of expertise, I searched Google under the key words "Federalists godless" to get these possible sources:

    asked by Mack
  87. Math

    How many mililiters equal 7.3 L? 7,300 Correct.

    asked by Mary
  88. math (unit rate)

    How do you find unit rates?

    asked by morgan

    A SIMPLE MACHINE CAN BE DIVIDED INTO 2 CATEGORIES. WHAT ARE THEY ?? One which increases force, or one which increases distance(or speed).

    asked by BRITTANY