Questions Asked on
April 9, 2010

  1. physics

    A solid sphere of uniform density starts from rest and rolls without slipping a distance of d = 3.4 m down a q = 29° incline. The sphere has a mass M = 3.7 kg and a radius R = 0.28 m. What is the magnitude of the frictional force on the sphere?

    asked by rufy
  2. Chemistry Help(Calorimetry)

    I have a few questions to ask, since I was absent from school and I do not really understand the calorimetry problems. 1) When a 16.9 g sample of NaOH dissolves in 70.0 g of water in a calorimeter, the temperature rises from 22.4*C to 86.6*C. Calculate for

    asked by Bonn
  3. Calculus

    A radar antenna is located on a ship that is 4km from a straight shore. It is rotating at 32rev/min. How fast does the radar beam sweep along the shore when the angle between the beam and the shortest distance to the shore is pi/4? Let's say that the

    asked by sh
  4. Science

    A nonuniform beam 4.52 m long and weighing 1.03 kN makes an angle of 25 degrees below the horizontal. It is held in position by a frictionless pivot at its upper-right end and by a cable a distance of 3.06 m farther down the beam and perpendicular to it

    asked by Anonymous
  5. Pre-calculus

    Find the lengths of the diagonals of a parallelogram with adjacent sides of 12cm and 13 cm if the angle between the sides is 50 degrees. The shorter diagonal is what in terms of cm? The longer diagonal is what in terms of cm?

    asked by Jamilla
  6. Calculus

    Evaluate the following limit: lim x->0 xcscx =limx->0 x/sinx Does it equal one because the reciprocal is 1/1=1?

    asked by sh
  7. college chem

    PLEASE..Determine [OH-]of a solution that is 0.270 M in HCO3-...thanks

    asked by susy
  8. biology

    When Darwin published his theory of evolution, he included all of the following ideas EXCEPT the idea that a. species changed slowly over time. b. some organisms become less suited to their environment then others. c. evolution occurs in spurts after major

    asked by Maggie
  9. Technology

    23. ? List two examples of tools used in each of these major areas of processing: material, energy, and information processing. Ok, this wasn't so hard: 23. There are a few tools that are used in each of the three major types of processing: material,

    asked by y912f
  10. Physics

    A solid sphere of uniform density starts from rest and rolls without slipping a distance of d = 3.4 m down a q = 29° incline. The sphere has a mass M = 3.7 kg and a radius R = 0.28 m. What is the magnitude of the frictional force on the sphere? --The

    asked by rufy
  11. Calculus

    Find the average or mean slope of 2x^3 - 6x^2 - 90x +3 on the interval [-6,10]? By the Mean Value Theorem, we know there exists at least one c in the open interval ( -6 , 10 ) such that f'( c) is equal to this mean slope. ::>> I already found the mean

    asked by Si
  12. Economics

    If the government wanted to encourage a monopoly to produce the socially efficient quantity, should it use a per-unit tax or a per-unit subsidy? Explain how this tax or subsidy would achieve the socially efficient level or output. Among the various

    asked by Kim
  13. Physics

    A beam of mass mb = 10.0 kg, is suspended from the ceiling by a single rope. It has a mass of m2 = 40.0 kg attached at one end and an unknown mass m1 attached at the other. The beam has a length of L = 3 m, it is in static equilibrium, and it is

    asked by Katie
  14. chemistry

    How many kilojoules are needed to vaporize 3.00 liter of ethanol at 78 degree celcieus?

    asked by Jeanette
  15. Physics

    A beam of mass mb = 10.0 kg, is suspended from the ceiling by a single rope. It has a mass of m2 = 40.0 kg attached at one end and an unknown mass m1 attached at the other. The beam has a length of L = 3 m, it is in static equilibrium, and it is

    asked by Katie
  16. Biology

    Need help answering these questions-- How can genetic engineering be applied to everyday life? How can genetic altering benefit the society of today and future societies? What areas of life could this manipulation of genes cause? Thanks -MC

    asked by mysterychicken
  17. econ

    Suppose you inherit $10,000 and decide to use the money to start a lawn-care business. You purchase a truck and a mower for $10,000 and start mowing lawns. Your annual cost for fuel and other supplies is $2,000. Now, instead of investing your money in the

    asked by sonia
  18. Geometry

    A shopping center plot of land is in the shape of a parallelogram. Give two other facts about the plot or roads through it. I do not understand can you please explain? I know that A quadrilateral is a parallelogram if and only if it has two pairs of

    asked by purple
  19. History

    On the issue of segregation, compare the views of Martin Luther King Jr. to those of Malcolm X.

    asked by Cassie
  20. English

    1. A doctor is a person who takes care of sick peole. 2. A doctor is a person who is qualified in medicine and treats patients. 3. A doctor is a person whojo job is dealing with sick people. 4. A fashion designer is a person who designs clothes. 5. A

    asked by rfvv
  21. earth science

    A fault is observed in a road cut, but there are no obvious rock units to correlate on either side of the fault to determine relative movement. How else might you determine or even infer whether the hanging wall has moved up or down relative to the

    asked by Anonymous
  22. english

    Comma Rule Exercise Instructions: Each of the following sentences is missing one or more comma(s). In the space provided beside each question, type the number of commas needed to correct each sentence. In addition, add the missing commas where they are

    asked by Lisa
  23. physics

    If we push on a heavy crate to the right and it slidesw, what is the direction of friction on the crate?

    asked by Michelle
  24. accounting

    I've solved most of the problem below, however I'm confused about the kind of information they need in the second part: Prepare the entry to allocate Snider's debit balance to Mantle and Mays. Prepare the entry to record the final distribution of cash.

    asked by mayasa
  25. Math

    How is graphing a system of inequalities similar and different than that of equations?

    asked by Me
  26. Math

    the ratio of the corresponding side lengths of two triangles is 5 to 3. the perimeter of the larger triangle is 48m. What is the perimeter of the smaller triangle?

    asked by Alexis
  27. Is anyone here a chemistry genuis?

    The formate ion, (CHO2-), is related to the acetate ion and forms ionic salts with many metal ions. Assume that 9.7416 g of M(CHO2)2 (where M represents the atomic symbol for a particular metal) are dissolved in water. When a solution of 0.200 M sodium

    asked by timmy
  28. Algebra 2

    A car enters a interstate highway 15 mi north of the city. The car travels due north at an avrage speed of 62.5 mph. Write an equation to model the car's distance from the city after traveling for h hours.

    asked by Carrie
  29. art 101

    What is a vanishing point?

    asked by rmz
  30. English

    Thank you very much for your last corrections. Can you please help me find better words to assess these other paragraph? Thank you very much in advance! 1) You have often strayed from the point. Actually, you have introduced a lot of themes you hadn’t

    asked by Franco
  31. Math

    Help pls! I just need to set the equations only, I can do the rest. The qu. Is: The sum of three numbers is 15. The sum of the first, the second, and twice the third is 20. The sum of the first, twice the second, and three times the third is 27. This is

    asked by Me
  32. Calculus

    Find the x coordinate of the absolute maximum for the function f(x)= (2+6lnx) / x? x>0 xcoordinate of abs max is?

    asked by Si
  33. physics

    The polar ice caps contain about 2.76E+19 kg of ice. This mass contributes negligibly to the moment of inertia of Earth because it is located at the poles, close to the axis of rotation. Estimate the change in the length of the day that would be expected

    asked by Jordan
  34. economics

    Given that the monopolist demand curve is Qd=200-2P, TC=#900 and P= #55. What is the total profit?

    asked by Samuel
  35. Math

    I'm having a hard time with graphing this problem. Could someone please help? Graphing has never been one of my strongest points. Graph the system of inequalities. x+3y is less than or equal to 9, 3x+y is less than or equal to 9, x is greater than or equal

    asked by B.B.
  36. English

    Thank you very much for suggesting me such useful sites! I still have a few more sentences to prepare for tomorrow. I really hope you can have a look at them, too. (just say "yes" if it is possible) 1 ) Another feature of the epic poem is that it contains

    asked by Franco
  37. Geography

    Where on Earth? Asian Wonder Rice 36. The reports coming back from the field couldn't be better. Your new strain of rice is exceeding all of your expectations. You developed it, using the latest techniques. It grows faster, has a tougher skin, and is more

    asked by y912f
  38. math

    how can you use the inverse trigonometrical function on calculator to find the value of x in degree for which sinx = -0.4

    asked by kenji86
  39. business finance

    value of outstanding bond changes whenever the going rate of interest changes in general short term interest rates are more volatile than long term interest rates. therefore short term bond prices are more sensitive to interest rate changes than are long

    asked by soniya
  40. physics

    A 0.145 kg block is released from rest from the top of a 51.7◦ frictionless incline. When it has fallen a vertical distance of 1.3 m, a 0.00794 kg bullet is fired into the block along a path parallel to the slope of the incline, and momentarily brings

    asked by Jen
  41. Maath

    how would you do this factoring by grouping? 2x^2+3x+6x+9

    asked by Lilian
  42. human growth and development

    According to the Bayley Scales of Infant Development,most children who are ????months old use the past tense and walk up stairs using alternating feet A)6 months B)14-16 months C)26-28 months D)32-34months IS D CORRECT ANSWER?THANK YOU:))))

    asked by vedrana
  43. science

    what is the thing a candle holds?

    asked by serena
  44. English

    I am writing a paper on war and human nature and I was wondering if anyone knows where I can find out how many years in human history have been without war as I can't find anything. Thanks

    asked by Anonymous
  45. com 220

    Will you re check me Ms. Sue On com 220

    asked by Tracie
  46. HCA 220


    asked by Anonymous
  47. Chemistry

    In a lab we did potentiometric titrations with a mixture of NaCl/KI and AgNO3. We plotted a titration curve and found the 2 endpoints which indicate where I is and where Cl is. We are looking to find the concentration of both of the halides present, and we

    asked by Johnathan
  48. biology

    What is the correct definition of a princible? a)A statement of a relationship between two or more abstractions. b)A simplified, symbolic representation of a theory or conceptual scheme. c)An abstract generalization that presents a systematic explanation

    asked by Mystic
  49. com 220

    Identify the thesis statement in the article A Nation Apart. What strategies does the author use to formulate his argument? What makes the arguments so viable and compelling?

    asked by Anonymous
  50. chemistry

    Nitrogen gas with a pressure of 1.3 atm is passed through water at a temperature of 35 degrees celcius. What is the total pressure in the container?

    asked by Meg
  51. UCI

    A student is given a stock solution of 1.54E-04 M. How much stock solution is needed to make 100 mL of a 1.60E-05 M solution?

    asked by Anonymous
  52. inb 205

    5. How would you accomplish exposure netting with currencies to two countries that tend to go up and down together in value?

    asked by sam
  53. U.S. History

    I was wondering if you could help me again. I just finished reading my chapter assignment on City Culture. My instructor is asking us to describe the social, economic, and political changes that played a role in changing city culture and how such changes

    asked by Lauri
  54. algebra

    Please solve 4x² + 8x + 16 = 0 and show steps. Confused..

    asked by J.C.
  55. math - permutations with factorials

    Over the past week, an airline pilot was n Vancouver three days, Calgary two days, Whitehorse one day, and Winnipeg two days. a) How many different itineraries could the pilot have had? b) If you knew that the two days in Calgary were consecutive (a

    asked by CL
  56. Calculus

    Evaluate the following limit: lim x->(pi/2) [((pi/2)-(x))/cosx] May I please get a hint on how to start this question?

    asked by sh
  57. English

    I have to create a mood poem so I am posting it onto here for you to suggest on what I could add to it to make it better and any other recommendations. I would like to hear your opinion on the poem I've established. If some words seem awkward, then I would

    asked by Sara
  58. help

    what is a nice word that rhyme with the word PRETTY

    asked by priscilla Perez
  59. physics

    An electron, moving with a speed, 6.8 km/s, enters a magnetic field that has a strength of 6.9 T. The magnetic force on the electron is perpendicular to the electron's velocity. Determine the radius of the resultant path of the electron.

    asked by Jamie
  60. pre calculus

    sinx cscx-sin^(2)x=cos^(2)x

    asked by kay
  61. math-please help

    if a=2^3*3^7*5^3*11^4 and b=2^2*3^5*7^2*11*13,find the following.(leave your anwer written with exponents)a.GCD b.LCM

    asked by yolanda
  62. MATH

    solve for x: 3x+4=7

    asked by Jeet
  63. history

    why did president harry truman fired general douglas macarthur from his command of american forces in east asia during the cold war?

    asked by chrissy
  64. grammar

    "The boys came and brought their hockey equipment" Is this sentence a compound, simple, complex, or compound-complex sentence?

    asked by Anonymous
  65. math

    how do you solve quadratic equation 7t-5t^2 = 0 on ti-83 graphic calculator

    asked by dev
  66. Math

    Using factoring to solve each quadriatic equation. 2x^2-5x-3=0. This is what I have so far but don't know what to do from here. GCF:1 A:2 B:-5 C:-3 AC:-6 Goal is the find two numbers that add to -5 and multiply to -6 Factors of 6: 1,6 -2,3 (That's the one)

    asked by Carly
  67. college physics

    A certain 9-V battery measures 9.0 V with no load connected to it, but only 8.5 V when connected to a radio which draws 150 mA of current. What is the internal resistance of the battery?

    asked by Mike

    This is our next assignemt due. I do not know where to begin looking. Any ideas? The analysis of financial statements is critical for determining the financial health of any organization. Financial statement analysis, however, demands a thorough

    asked by ADA
  69. math


    asked by pAvLeEn
  70. Data Mangement

    Rachel has 3 red, 5 blue, and one yellow towel. In how many ways can the towels be aranged if: a) One blue towel must be at each end of the row? b) All the blue towels must be side by side? c) The towel's of the same colour must be side by side?

    asked by Madmazel
  71. math- Algebra 2

    243^0.2x= 81x+5 how do i solve

    asked by Jackie
  72. math

    Ten cards are selected without replacement from a standard 52 card deck that contains 13 clubs and 39 other cards. What is the probability that 4 of them are clubs?

    asked by Lisa
  73. Global History

    How and why are hate groups protected by the constitution? What actions and speech do you think are not protected and why?

    asked by Jimmy
  74. English

    Hello! On Monday I am teaching English to 8th graders. There will be a little competition - the topic is the invention of the telephone and the clock.What can I give as a reward to the group that wins? (They will be asked 14 questions and the group that

    asked by mary
  75. psychology

    whqt kind of psychology doees a person have who prefers to stay in closed rooms?

    asked by Anonymous
  76. phys101

    if the stress strai graph is a straight line,how much does the bar srtetch when applied force is increased by 50000N?

    asked by kabelo
  77. help:)

    goverment by the nobility or those considered the best of society is: ___a.a theocracy ___b.a monarchy ___c.a pathiarchy aristocracy what so u think?

    asked by catherine
  78. economics

    state the effects of unemployment on the (A)consumers expenditure (b)investment (c)Government expenditure (D)The church.

    asked by brian
  79. Plant Physiology

    I'm confused about the oxygen evolving complex step in photosynthesis..From what I can understand so far, a P680 pigment molecule gets excited in PSII forming P680* which then loses an electron to form P680+ which is a strong oxidant. This then splits 2

    asked by Hannah
  80. math

    can someone make a lattice table. i have to multiply 523*73 using lattice multiplication. i know how to do it and have the numbers plugged in but without the table.

    asked by jennifer
  81. Mass Communication Studies

    I need to find two websites. One has to be a "for profit" and one not for profit organization. Can someone please steer me in the right direction? Thanks!

    asked by Breanna
  82. biology

    Which of the following statements about sexual and asexual reproduction is FALSE? a. Genetic diversity occurs in sexual reproduction. b. Asexually reproducing organisms can repair their own DNA. c. There are no special reproductive cells in asexual

    asked by Maggie


    asked by eva
  84. history

    what was the key U.S. government memorandum that militarized american foreign policy and indicated national faith in the economy's capacity to sustain large military expenditures ?

    asked by chrissy
  85. math

    plot graph for y = 1.55x +30 and y= 2.75x where y (£)as a function of the total number of swim x, for the option( member and non-member)what are the approx. coordinates and and what does it represent.

    asked by dev
  86. Math

    Dear Reiny! U r a life-saver! Is there a short cut to how can I set the question or change word problems into math one? It seems that this is my problem! Also, why did my way worked as well with different answers? My answers satisfied all equations as

    asked by Me
  87. apush

    the failure of the new united nations to sustain a spirit of cooperation among the great powers was first demonstrated by: a. its inability to defend the jewish state of isreal that it had created b. its inability to control atomic energy and prevent the

    asked by amanda
  88. social civics

    the three basic types of government: mayor-council plan, the commission, and the manger-council plan. give at least one strength and one weakness for them . and size of city where most effective thanks alot i cannot not seem to find this in my book

    asked by kc
  89. Physics

    A physics student of mass mm = 100 kg gets a summer job painting houses. On his first project, he builds a platform using large pine board with a mass of mb = 60 kg The board has an overall length of L = 8.5 meters and set on two 1 meter tall saw horses so

    asked by Jacob
  90. COMM215

    revising sentences to remove these pronouns When a police officer fires his gun, he mustfill out a lot of paperwork. When a teacher writes an exam, they think about what aspects of students learning they want

    asked by Jana
  91. ACCOUNTING/Bobpursley

    Yes I do,but just wondering if there was a website or two that would be helpful. I am about 200 words shy of 750. I thought that adding additional information would bust things up a bit.

    asked by ADA
  92. math

    Use factoring to solve each equation: 49t^2=25 How would u do this? Thank You

    asked by Carly
  93. math

    What is 752*35 please i need the answer now

    asked by URGUNT
  94. chemistry

    1. CO2 is passed through water at 100 c with a pressure of 854mm of Hg. what is pressure of CO2?

    asked by MC
  95. Ms Sue

    Thank you very much. I just needed a second opinion on this assignment. I will look into the website you provided. Have a great weekend!

    asked by Lauri
  96. algebra

    Please solve 4x² + 8x + 16 = 0 and show steps. Confused..

    asked by J.C.
  97. algebra

    Please solve 4x² + 8x + 16 = 0 and show steps. Confused..

    asked by J.C.
  98. cultures

    Proponent of exploitation

    asked by K. Smith
  99. English

    Thank you very much for helping me! Here are some more sentences I'd like you to check. Thank you very much! 1) In fighting against the dragon, Beowulf performed (can you use “did” too?) three actions. 2) First he, concealed by the barrow, raised his

    asked by Franco
  100. phys101

    if the stress strai graph is a straight line,how much does the bar srtetch when applied force is increased by 50000N?

    asked by kabelo
  101. thesis statement

    hi there, I have given too much trouble to mind but could not get the answer as how to write down thesis statement on the " exercise is good for health that prevent the depression. thanks

    asked by kisu
  102. Maths


    asked by Anup
  103. math

    3(X+1):X+1 10(x+1):x+1

    asked by LERA
  104. algebra

    can you help me solve this problem (16n)^1/2

    asked by freshan
  105. English

    I am making another poem, and I want to include old age home in there, but what's another name for that. I'm referring to the place where old people are sent off to by their kids.

    asked by Sara
  106. Physics

    With speed 75m/s and period 5.42ms, calculate the wavelength.

    asked by James
  107. English

    This is the other poem which I have created, with a positve mind:-) The last one was a Mood Poem; This one is a 'I do not understand' poem Here are the instructions for it: A. Begin the poem with "I do not understand." B. List three things you do not

    asked by Sara
  108. economics

    the value of the marginal propensity to consume is .8. If real gdpincreases by $30 billionthis situation was the result of an increase in the aggregative expenditures schedule of?

    asked by Anonymous
  109. aLGEBRA


    asked by JILL
  110. Anatomy and Physiology

    What structure still works to pump out sodium and potassium in while resting to maintain the concentration gradient? a. cell body b. axons c. dendrites d. synapse All of the following are characteristic of the passive potassium channel except _____. a.

    asked by Joe
  111. Com 220

    Can someone tell me if my answers are right? Questions 7-15 Directions: In each of the sentences below, three portions are underlined and lettered. Read each sentence and decide whether any of the underlined parts contains a grammatical construction, a

    asked by Tracie
  112. Math 157

    How many rectangles will fit about a point when tessellating the plane? How do you know?

    asked by Jamie
  113. Math

    Thanks Damon! first I eliminated z by adding equation 1+2 (1st one *2) and got same as urs x+y= 10. Then, I eliminated z by adding equation 2+3 (2nd equation*3, and 3rd equation*2) and got x-y=6. x+y= 10 x-y=6 x=16 why is this wrong?

    asked by Me
  114. grammar

    revising these sentences so the subject and verb agree with one another. One of my friends want to attend my graduation ceremony. Seven cats,twomonkeys, and adog plays in the store window.

    asked by Jana
  115. biology

    What is the correct definition of a princible? a)A statement of a relationship between two or more abstractions. b)A simplified, symbolic representation of a theory or conceptual scheme. c)An abstract generalization that presents a systematic explanation

    asked by Mystic
  116. Algebra

    Solve this equation: -4x^2=0 Lost what to do to solve this equation, especially with the exponent of 2.

    asked by Carrie