Questions Asked on
July 21, 2013

  1. physics

    The sun radiates like a perfect blackbody with an emissivity of exactly 1. (a) Calculate the surface temperature(K) of the sun, given it is a sphere with a 7.00 multiplied by 108 m radius that radiates 3.80 multiplied by 1026 W into 3 K space. (b) How much

    asked by Alice
  2. Physics

    A raft is 4.2 m wide and 6.5 m long and it floats on water (density of water = 1000 kg/m3). When a horse is loaded onto the raft, it sinks an additional 0.027 m deeper into the water. What is the weight of the horse (in N)?

    asked by Joe Shmo
  3. physics

    The formation of condensation on a glass of ice water causes the ice to melt faster than it would otherwise. If 7.40 g of condensation forms on a glass containing water and 210 g of ice, how many grams will melt as a result? Assume no other heat transfer

    asked by Alice
  4. sci 207

    1. A dad holds five coins in his hand. He tells his son that if he can guess the amount of money he is holding within 5% error he can have the money. The son guesses that he is holding 81 cents. The dad opens his hand and displays 90 cents. Did the son

    asked by Anonymous
  5. physics

    The "steam" above a freshly made cup of instant coffee is really water vapor droplets condensing after evaporating from the hot coffee. What is the final temperature of 280 g of hot coffee initially at 90.0°C if 2.50 g evaporates from it? The coffee is in

    asked by Eric
  6. physics

    (a) How many kilograms of water must evaporate from a 60.0 kg woman to lower her body temperature by 0.750°C?

    asked by Alice
  7. physics

    an object has an acceleration of 12.5 m/s2. if the net force experienced by the object is decreased by a factor of 4.5 then what is the new acceleration

    asked by jessie
  8. trig

    A barge is pulled by two tugboats. The first tugboat is traveling at a speed of 12 knots with heading 140°, and the second tugboat is traveling at a speed of 17 knots with heading 200°. Find the resulting speed and direction of the barge. (Round your

    asked by Priscilla
  9. ggc

    In a random sample of 200 registered voters, 120 indicated they are Democrats. Develop a 95% confidence interval for the proportion of registered voters in the population who are Democrats.

    asked by Nicole Jones
  10. accouting

    The ledger of Custer Company has the following work in process account. Work in Process—Painting 5/1 Balance 4,820 5/31 Transferred out ? 5/31 Materials 5,710 5/31 Labor 4,800 5/31 Overhead 2,430 5/31 Balance ? Production records show that there were 410

    asked by Patiance

    A cylindrical tank if 8 ft. in diameter and 20 ft tall. how many gallons of paint are needed to paint the tank if one gallon covers 200 sq ft ? and a cylindrical hole with diameter 8 inches is cut through a cube 10 in. on a side. find the surface area of

    asked by Johaann
  12. physics

    In 1986 a gargantuan iceberg broke away from the Ross Ice Shelf in Antarctica. It was approximately a rectangle 160 km long, 45.0 km wide, and 250 m thick. (a) What is the mass of this iceberg, given that the density of ice is 917 kg/m3? (b) How much heat

    asked by Eric
  13. Physics

    A 41.0 cm diameter wheel accelerates uniformly from 86.0 rpm to 342.0 rpm in 3.4 s. How far (in meters) will a point on the edge of the wheel have traveled in this time?

    asked by Igor
  14. Math

    From an observation tower that overlooks a runway, the angles of depression of point A, on one side of the runway, and point B, on the opposite side of the runway are, 6 degrees and 13 degrees, respectively. The points and the tower are in the same

    asked by jasmine
  15. Math

    Jason has to sell a box of candy bars for a fundraiser. Yesterday he sold 1/3 of the total number of candy bars that came in the box, and today he sold 3 candy bars. If his sales for these two days was 11/30 of the total number of candy bars that came in

    asked by Anon
  16. math

    a 4 x 7 rectangle can be rotated about the long side to generate a also can be rotated about the short side to generate a cylinder. find the lateral and surface area of the two cylinder.

    asked by yha
  17. socials 11

    why did canada's ties with cuba, in particular, represent a move away from adherence to american foreign policy?

    asked by alyssa
  18. Chemistry

    The nuclide 38cl decays by beta emission with a half life of 40min. A sample of .40 m of H38cl is placed in a 6.24 liter container. After 80 min the pressure is 1650 mmHg. What is temperature of container? I have tried calculating the decay rate of the

    asked by Nancy

    A 4x7 rectangle can be rotated about the long side to generate a cylinder. It also can be rotated about the short side to generate a cylinder. Find the lateral area and surface area of the 2 cylinders . PLEASE HOW. TELL ME

    asked by Leila
  20. Physics

    A block of mass M=6 kg and initial velocity v=0.8m/s slides on a frictionless horizontal surface and collides with a relaxed spring of unknown spring constant. The other end of the spring is attached to a wall. If the maximum compression of the spring is

    asked by Helena Beau
  21. statistics

    1. A simple random sample of 400 students is taken at a large university. The average height of the sampled students is 68 inches and the SD is 2 inches. The distribution of heights in the sample follows the normal curve very closely. An approximate 68%

    asked by Anonymous
  22. Math

    Convert 57/9 to a whole or mixed number.

    asked by April
  23. Algebra 2

    -Explain the difference between log base b (mn) and ( log base b of m)(log base b of n). Are they equivalent? My answer: Let b=2, m=8, n=16 *log base b (mn)=log base b of m + log base b of n log base 2 of 8+ log base 2 of 16=7 * (log base b of m) (log base

    asked by Anonymous
  24. English (Ms.Sue please answer) I did some work own

    Ok so Im thinking I will use the theme of heroism (which is the human condition) My arguments would be character, social position and ancestry This is a book and movie comparative essay... I have to do a comparative essay on a book and a film (I chose The

    asked by Kristen
  25. Math

    Solve the following problem and reduce to lowest terms (mixed number or improper fraction). 2/3 + 1/6 +11/12

    asked by April
  26. Finance

    One way to think about the required rate of return is: as the highest return a risk-averse investor wants from an investment. as the risk-free rate of return plus a risk premium. as the historical rate of return plus a risk premium. as a comparison between

    asked by Jasmine
  27. Computer science

    Write an HTML form that prompts the user to enter loan amount, interest rate, and number of years, as shown in Figure 1. Clicking the Compute Payment button invokes a JSP program to compute and display the monthly and total loan payments, as shown in

    asked by AN3852
  28. Math

    What would be the amount of compound interest on $8,000 invested for one year at 6%, compounded quarterly?

    asked by Mike
  29. Chem 101

    why must we used sulfuric acid H2SO4, in 2KAl(OH)4 + H2SO4->2Al(OH)3(s)+K2SO4 +2H2O and 2Al(OH)(s)+3H2SO4->Al2(SO4)3+6H2O rather than hydrochloric acid,HCl,or nitric acid, HNO3?

    asked by Nida McLaurin
  30. Chemistry

    I posted this before a few hours ago without a reply yet but decided I would add more detail: question The nuclide 38cl decays by beta emission with a half life of 40min. A sample of .40 m of H38cl is placed in a 6.24 liter container. After 80 min the

    asked by Nancy
  31. physics

    a boy pushes with a force of 15 lbs. on a lawnmower handle which makes an angle 37 degree with the level ground. What is the horinzontal component of this force?

    asked by rosilyn
  32. General Math

    I am so confused can anyone help me understand which one is correct and why.... Beta is estimated as the slope of a regression line fit to pairs of periodic returns, (rx, ry), where: rx is the return for a market index such as the S&P 500 Index. rx is the

    asked by Alisha
  33. business

    hello: i am considering going back to school to get a degree in business. i have borrowed a book from a friend who is already in the program. meanwhile: i sometimes have trouble working my way through the chapter questions. he said that they were not given

    asked by faye
  34. math

    Jo saw a dress regularly priced at 78%. It was on sale at a discount of 30%. Find the amount of discount and the sale price.

    asked by vincent
  35. math

    A GARDEN places some lilies in a pond.he does this on the first day of the month of september.the lilies double in volume every day until on the last day of the month,the pool is full.on what day of the month was the pool half full of lilies?

    asked by sarah
  36. math

    Shelly delivers the weekly local paper to neighborhoods in her town. House numbers are even on one side of the street and odd on the other. Shelly delivers an equal number of papers to both sides of the street. Although she always aims for the front

    asked by zach
  37. physics

    A 3.00 g lead bullet traveling at 640 m/s strikes a target, converting its kinetic energy into thermal energy. It's initial temperature is 40.0°C. Find the available kinetic energy of the bullet. Find the heat required to melt the bullet.

    asked by Alice
  38. Math

    Convert 4/5 to higher terms of twenty-fifths.

    asked by April
  39. Math

    Ryan Miller wanted to make some money at a flea market. He purchased 55 small orchids from a nursery for a total of $233.75, three bags of potting soil for $2.75 each, and 55 ceramic pots at $4.60 each. After planting the orchids in the pots, Ryan sold

    asked by April
  40. Math

    In the Capital Asset Pricing Model, the market risk premium is estimated over a long period of time because: more data is always better than less. a longer holding period gives a more reliable estimate because it is, in effect, a larger sample size. almost

    asked by Mark
  41. calculus (hint?)

    f(x) is a twice differentiable function such that f(2x)=f(x+5)+(x−5)^2 What is f''(x)?

    asked by andy
  42. College Algebra

    Find the equation of the parabola y = ax2 + bx + c that passes through the points. To verify your result, use a graphing utility to plot the points and graph the parabola. (−2, −15), (−1, −4), (1/2,-10) y=?

    asked by Jack
  43. Math

    Given the points A(0,0), B(4, 3) and C(2,9), what is the measure of angle ABC? Using Law of Cosines.

    asked by jasmine
  44. Physics

    how many grams of water at 20 degrees celcius are necessary to change 800.0g of water at 90.0 degrees celsius to 50.0 degrees celcius?

    asked by Dale
  45. statistics

    1. A simple random sample of 400 students is taken at a large university. The average height of the sampled students is 68 inches and the SD is 2 inches. The distribution of heights in the sample follows the normal curve very closely. An approximate 68%

    asked by Math-Stastistics
  46. Math

    Ventura Coal mined 6 ⅔ tons on Monday, 7 ¾ tons on Tuesday, and 4 ½ tons on Wednesday. If the goal is to mine 25 tons this week, how many more tons must be mined?

    asked by April
  47. math

    when a large cake is cut into pieces that each weigh 3 ounces, it yields 110 pieces. how many pieces would the cake yield if it were cut into 2 ounce piece instead?

    asked by anon
  48. sociolgy

    4. Which of the following disciplines are women less likely to study, leading to education-related economic inequality? (Points : 1) Sciences Applied sciences Humanities Arts

    asked by Anonymous
  49. algebra

    Radical form (5a2b3)1/4

    asked by mhark
  50. math

    when tessa and fatima run a 100 metre race,tessa wins by 10m.then they repeat the race,this time with tessa starting 11m behind the starting line.if both girls run at the same speed as efore,what would be the expected result?

    asked by sarah
  51. World Geography

    The major cause behind the Israeli invasion of Lebanon was

    asked by Anonymous
  52. English to Writeacher

    Yes, I know how to write a thesis statement and how a comparison essay goes.. But I already have my info: This is a comparison essay exploring to what degree an inherent film is discussed and how it relates to an aspect of the HUMAN CONDITION. So my theme

    asked by Kristen
  53. Math

    Two Wheeler-Dealer Bike Shop has a 22-inch off-road racer on sale this month for $239.95. If the original price of the bike was $315.10, how much would a customer save by purchasing it on sale?

    asked by April
  54. earth

    What is an elipse of the sun and what is lunor elipse of the moon

    asked by Gopolang
  55. math find the max/min

    f(x) = x2 + 2x - 9

    asked by Natalie
  56. math

    if c+4=2a+7b, what is the value of c+6 in terms of a and b? 4a+7b 2a+7b-2 2a+5b+2 2a+9b 2a+7b+2

    asked by anon
  57. math

    a taut wire of length'w'emits a single note when plucked.if it were half as long it would emit the same note but one octave long should the same wire be to emit the same note but one octave lower?which gives the biggest answer?1)2.3x8 2)3.4x7

    asked by sarah
  58. English

    This is a quote. Without the dark we would never see the stars For you is this an encouraging quote?

    asked by Anonymous
  59. math

    In which of the following sentences is the underlined word a past participle ? (a) we (helped)Joan to pack her things (b) I was (working)overtime for about six months (c)Jenna has (driven)this route multiple times.(d)She would (like) to join us

    asked by keisha
  60. eth/125

    Ethnicity refers to a.racial differnces b.diffrences in physical and mental characteristics c.cultural diffrences d.citizenship

    asked by john
  61. MATH


    asked by Johaann
  62. chemistry

    so you have this chemical you tested on mice and rats now you are going to test it on humans to how much degree can you test on humans? what can you measure ex) mass/body weight?

    asked by ggggg
  63. physics

    State the conditions for total internal reflection

    asked by Anonymous
  64. Physics

    When working with the properties of Saturated Steam. The pressure table supplied states: Pressure kPa = 1100 (P) Temp in Celsius = 184.09 (T) Specific Volume = Sat. Liquid = 1.1330 (Vf) Specific Volume = Sat.Vapor = 177.53 (Vg) Enthalpy = Saturated Liquid

    asked by Danny
  65. Chemistry

    How many liters of hydrogen needs to be reacted with chlorine to produce 21g of hydrochloric acid, at STP?

    asked by tom
  66. Chemistry 3A

    An aqueous solution contains the ions B, C, and D that are in equilibrium with one another according to the reaction B (aq) + C (aq) ->/

    asked by Sarah
  67. Calculus

    Find the slope of the functions graph at a given point. Then find an equation for the line tangent to the graph there. f(x)=2*square root of x. (1,2) Could someone please help me figure this one out?

    asked by Jess
  68. socials 11

    why did Trudeau lose popularity in the 1970s?

    asked by alyssa
  69. Calculus (Limits)

    f(x) is a function differentiable at x=1 and f′(1)=1/13. What is the limit of (x^3 - 1)/f(x) - f(1) as x approaches 1?

    asked by Drake
  70. Strength of materials

    Explain UTM with neat sketch

    asked by Hussain
  71. Math

    Is octaland hexadecimal numbering are the number system that is used by computers?

    asked by Jnr John
  72. life orientation

    in 10-15 lines critically discuss 5 ways in which the human or environment problem impact on de community

    asked by grann
  73. physics

    voltage of a solenoid

    asked by Anonymous
  74. math

    a total of $24.00 is to be divided among three children in amounts proportional to their ages. if the children's age are 9, 12, and 15 years, how much money will the YOUNGEST receive? 2 3 4 5 6

    asked by anon
  75. math

    if x,y, and z are different integers and x+y+z=3, what is the least possible value of z? -3 1 2 3 cannot be determined from information given

    asked by anon
  76. chem 103

    Question..where to start..If you had 250.0 g of copper (specific heat = 0.385), what temperature could you raise it to (starting from 20 degrees C) if you heated it with 1685 Joules of energy? If I use the formula q=MxCsX^T, How do I find ^T if I do not

    asked by Andrew
  77. math

    32x^3y^2z^4 / 4x^4yz^6 =

    asked by vincent
  78. English to Writeacher

    Writeacher, please help me with my thesis!!:'( its due tmw...i don't know wat theme i should do and wat my arguments would be... here is the plot: Gandalf tricks Bilbo into hosting a party for Thorin and his band of dwarves, who sing of reclaiming the

    asked by Kristen
  79. English

    Without the dark, we'd never see the stars. What does this mean to you?

    asked by Anonymous
  80. Differentiation

    If f(x)=(x+1)^2/(2x+1)^3, then f′(1)= −a/b. What is a and b?

    asked by Drake
  81. socials 11

    why did OPEC raise the price of oil in 1972?

    asked by alyssa
  82. eth/125

    Which of the following types of people would be unlikey ro do much to change themselves? A. The fair wheather liberal b.the all wheather liberal c.the timid bigot d.all of these

    asked by ryan
  83. Strength of materials

    Giveto applications of mechanics depends upon strength

    asked by Hussain
  84. Math<Please Help>

    A swimmin bath has verticle sides and the floor slopes uniformly so that, when the bath is full, the water is 1m deep at the shallow end and 4m deep at the other end. If the bath is 25m long and 12m wide, calculate the volume of the water in the bath when

    asked by Jnr John
  85. english

    why some sentences begin with ....1. to my surprise 2. to be able to do it ......what grammatical aspect is it

    asked by r s telagathoty
  86. Math

    Solve the following problem and convert to lowest terms (mixed number). 6 ⅚ – 17/18 (six and five sixths minus seventeen eighteenths)

    asked by April
  87. Analytical Chemistry

    calthe culate mass of 10% stock solution required to prepare 0.8kg of 4%solution

    asked by Shewa
  88. math

    in the number 0.123451234512345......(recurring)what is the 1992th digit after the decimal point

    asked by sarah
  89. Quantitative Reasoning for Business

    If I made 12.40 and received a 3.5% increase what would my new salary be

    asked by ali
  90. Math

    True or False. The value of the square root of 16 is greater than the cube root of 29.

    asked by Paula
  91. American National Government

    1-During a hearing, executive branch officials are asked to: a) report on what their agency or department has been doing. b) state their intentions for reelection. c) pass new legislation proposed by Congress. d) approve funding for upcoming programs.

    asked by John