Questions Asked on
April 18, 2012

  1. physics

    8 1/2 HRS ON THIS MASTERING PHYSICS WOW n 1909, Robert Millikan was the first to find the charge of an electron in his now-famous oil-drop experiment. In that experiment tiny oil drops were sprayed into a uniform electric field between a horizontal pair of

  2. geometry

    1. What is the lateral surface area of a square pyramid with side length 11.2 cm and slant height 20 cm? 224 cm2 448 cm2 896 cm2 2508.8 cm2 2. What is the lateral surface area of a cone with radius 19 cm and slant height 11 cm? 19 cm2 30 cm2 200 cm2 209

  3. physics

    Electronic types neglect the force of gravity on electrons.To see why, compute the force of Earth's gravity on an electron and compare it with the force exerted on the electron by an electric field of magnitude 6000 V/m (a relatively small field). The mass

  4. algebra

    a bank teller has 52 $5 and $10 bills in her cash drawer. the value of the bills is $460. how many $5 bills are there?

  5. general science

    calculate the density of a cork of mass 24g and volume 100 cm3. what would its density be if its volume increases to 200 cm3?

  6. math

    Lois wants to send a box of oranges to a friend by mail. The box of oranges cannot exceed a mass of 10 kg. If each orange has a mass of 200g, what is the maximum number she can send?

  7. math(mechanics)

    the velocity of a particle traveling in a straight line is given by v=(6t-3t^2)m/s, where t is in seconds, if s=0 when t= 0. determine the particles deceleration and position when t=3s. how far has the particle traveled during the 3s time interval and what

  8. physics

    To illustrate the effect of ice on the aluminum cooling plate, consider the data shown in the drawing below. The length of the ice block is L1 = 0.00476 m and its temperature is T1 = -11.9 °C. The aluminum block is L2 = 0.00131 m long and has a

  9. physics

    A white-crowned sparrow flying horizontally with a speed of 1.65 m/s folds its wings and begins to drop in free fall. (a) How far does the sparrow fall after traveling a horizontal distance of 0.550 m? (b) If the sparrow's initial speed is increased, does

  10. change decimal to fraction

    How do I change a decimal that looks like this 0.31 1/4 into a fraction?

  11. statistics

    find the probability p(-1.14 < z < 1.01) using the normal standard distribution

  12. physics

    1. A closed magnetic circuit of cast steel contains a 6cm long path of cross sectional area 1cm square and a 2cm part of cross sectional area of 0.5cm square. A coil of 200 turns is wound around the 6cm length of the circuit and a current of 0.4ampere

  13. Physics

    A mass is oscillating with amplitude A at the end of a spring. How far (in terms of A) is this mass from the equilibrium position of the spring when the elastic potential energy equals the kinetic energy?

  14. algebra

    The week before the big concert, five friends Alan, Ben, Cameron, Derryck, and Garrett, stood in line to buy tickets. There were other people there, but the five friends were in the line in the order listed above. The line was really long, and they were

  15. dynamics

    a baseball is thrown downward from a 12.5m tower with an initial speed of 4.5m/s. determine the speed at which it hits the ground and the time of travel.

  16. grammar punctuation

    Fine the error in punctuation or capitalization 1. "After you've rested," Frank said, "please help me move these boxes." "Can we wait until later?" asked Emily. "I have a lot of homework." "It won't take very long." replied Frank. (my choice) Emily told

  17. Chemistry

    Regular gasoline (C8H18) reacts with oxygen gas to form carbon dioxide gas and water vapor. If your tanks of gasoline holds about 10.5 kg of gasoline, how many liters of carbon dioxide are formed at 24 degrees Celcius and 725mm Hg from the combustion of

  18. dynamics

    a truck traveling along a straight road at 20km/h,increases its speed to 120km/hr in 15 s. If its acceleration is constant. determine the distance traveled.

  19. World History

    What effects did the Industrial Revolution have on government reforms, and what were the laws that were enacted in Great Britain during the 1800s? Thanks -MC

  20. Math

    This is a joke: What is neck hair on a female deer called?:)

  21. math

    15y

  22. math

    Sheila drew single marbles from a bag, recorded the outcome, and replaced the marble. In 50 draws, Sheila drew 20 white marbles and 30 black marbles. What is the experimental probability that the next marble will be black?

  23. Networking

    Assume that an average SNMP response message is 100 bytes long. Assume that a manager sends 40 SNMP Get commands each second. What percentage of a 128 kbps WAN link would the response message represent?

  24. pHYSICS hELP rATIONAL SPEEDS OF DISKS

    If rotational speed of a disc remains constant, what happens to the speed of a point on the disc if its distance from the axis is doubled? It stays the same It also doubles It triples It quadruples

  25. Finite Mathematics

    Two dice are rolled. Let the random variable X denote the number that falls uppermost on the first die and let Y denote the number that falls uppermost on the second die. (a) Find the probability distributions of X and Y. (b) Find the probability

  26. Binomial Distribution

    A biology quiz consists of twelve multiple-choice questions. Eight must be answered correctly to receive a passing grade. If each question has five possible answers, of which only one is correct, what is the probability that a student who guesses at random

  27. English

    I retyped the first part considering your corrections. Can you check if it is OK now? Thank you very, very much. 1) Mr. Otis buys Canterville Chase from Lord Canterville. After that, Mr Otis drives with his family to Canterville Chase. When they arrive

  28. algebra-trig help asap

    Evaluate the expression. Assume that all angles are in quadrant 1. 1. cos(arccos4/5)

  29. Chemistry

    A gas mixture contains 4.00 grams of O2 and 4.00 grams of He. If the total pressure of the gas sample is 4.67 atm, what is the partial pressure of each component?

  30. Chemistry(Please respond)

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

  31. Algebra

    Express the radical in simplied form: The 5th root of 2430 I do not know how to type in the radical sign.

  32. Chemistry

    what is the Fe concentration in ppm of a 10.00mL of 500 ppm Fe solution which has been diluted to 100ml?

  33. math

    sara spent $64 on books and towels. she bought three times as many books as towels. how many of each did she buy? *every item is $8

  34. law

    Do you think it is beneficial for criminal justice professionals to agree that crime is “functional” in nature?

  35. physics

    A source of instantaneous potential V = 10sin(50pi t) is connected across a capacitor of capacitence 1 times 10power negative 6 F. calculate the maximum value of the current and phase difference between the current and the potential difference?

  36. Analytical Chemistry

    How many millimoles and molecules of solute are in 500 ml of a solution that is 5.41 ppm KMnO4?

  37. Physics

    Two masses, m1=3kg and m2=2kg, are suspended with a massless rope over a pulley of mass M = 10kg. The pulley turns without friction and may be modeled as a uniform disk of radius R=.1m. You may neglect the size of the masses. The rope does not slip on the

  38. physics

    A 0.299-m-thick sheet of ice covers a lake. The air temperature at the ice surface is -15.0 °C. In 4.90 minutes, the ice thickens by a small amount. Assume that no heat flows from the ground below into the water and that the added ice is very thin

  39. statistics

    The general manager for Gordon's Self Service Gasoline is interested in estimating the mean number of gallons of gasoline that are purchased by customers at their Philadelphia location. He would like his estimate to be within plus or minus 0.50 gallons,

  40. lOTS OF PHYSICS :)

    41. Is the speed of light constant as it passes through transparent materials? Yes, the speed of is always constant No, light travels at different speeds through different materials 42. A lens that causes light to diverge is A converging lens A diverging

  41. chem

    Predict out of which of the following would a dialysis bag be permeable to? Potassium Ions= DNA= Sucrose= No? Starch =No? Sulfate Ion=yes Chloride Ion=yes Protein=No I'm not sure about potassium ions or DNA though.

  42. chem

    Iron (III) sulfate is a yellow compound that is used as a coagulant in water treatment. write a balance chemical equation and a solubility product expression for its dissolution in water. Please Help

  43. geometry(surface area)

    What is the lateral surface area of a cone with radius 19cm and slant height 11cm? possible answers; 19picm^2 30picm^2 200picm^2 209picm^2 What is the lateral area of the square pyramid to the nearest whole number? base 11m and slant 15m possible answers;

  44. math

    Fifteen (y) less than. Negitive five Solve for y

  45. chemistry

    Balanced chemical equation, calculate how many moles of products would be prduced of 0.500 mole of the first reactant were to react completely. CO2 + 4H2 = CH4+ 2H2O

  46. to ms.sue

    how were the gold rushes profitable for people who were not prospectors?

  47. math

    Use the table to identify the relationship of the SECOND sentence to the FIRST sentence. 1. A triangle is a right triangle if and only if it has a right angle. 2. A triangle has a right angle if and only if it is a right triangle. CO = contrapositive BI =

  48. grammar(possessive)

    "A years worth of hard work has finally paid off." year (my choice) years years' year's Please check.

  49. College General Biology

    A man who is a non-tongue roller (t) marries a woman tongue roller (T) whose father was a non-tongue roller (t) - what would the expected genotype and phenotype percentage for their offspring?

  50. Grade 11 Math

    jackie mows a stip of uniform width around her 25m by 15m rectangular lawn and leaves a patch of lawn that is 60% of the original area. What is the width of the strip?

  51. Algebra 2

    Solve this equation: √4x+8=6 If there is more then one solution enter with a comma

  52. Math Problem

    Company A rents copiers for a monthly charge of $240 plus 8 cents per copy. Company B rents copiers for a monthly charge of $480 pluse 4 cents per copy. What is the number of copies above which Company A's charges are the higher of the two? Please Help and

  53. algebra

    1. A container holds 20 pennies, 6 nickels, and 12 dimes. You will randomly select two coins without replacement. a. Fill in the probabilities on each branch of the tree diagram. (4 points)

  54. Pre-Calc help NOW PLEASE!!!

    Evaluate the expression under the given conditions. tan(A+B); cosA=-1/7, A in quadrant 3, sinB=1/2, B in quadrant 2.

  55. chem

    Calculate the molarity of a solution made by dissolving 0.150 in enough water to form exactly 730 of solution

  56. Accounting HELPPPP

    Jim Johnson has 40% interest in Richards and Johnson, LLP. The partnership has the following activity for the year: Sales $180,000 Cost of Goods Sold 105,000 Guaranteed Payment to Ron Richards 25,000 Depreciation 11,000 Interest Expense 1,000 Tax-Exempt

  57. General Chemistry 1412 inorganic

    Find the pH of a solution that is 0.30 M benzoic acid (HBz) and 0.25 M sodium benzoate(NaBz). Ka for benzoic acid = 6.5 x 10-5

  58. math

    when a cross tile is placed on a number chart, the number covered by the centre square is the average of all the numbers covered, no matter how large the cross is. Explain why.

  59. Calc.

    1000 yds of fence x 1000-x 1. Show that the area function to be maximized is A(x) = ( pi + 4 / 16pi) x^2-125x+62500 2. Show that the critical point of A(x) is x=1000pi/pi+4 3. 1000yds of fencing and y>2r, find the values of r and y that maximizes the area

  60. geometry

    a squared + b squared=c squared 5 squared + 12 squared = c

  61. chemistry/check please

    923.85 grams of gaseous ammonia condenses into liquid.How much energy was released? answer: 1268.28852 = 1268 kj

  62. Biology 1010

    Which of following is NOT characteristics of all fish? a.gills as respiratory organs b.two-chambered heart c.swim bladder for buoyancy organ d.skin with scales e.presence of jaws

  63. GED-Geometry

    a squared + b squared = c squared 5 squared + 12 squared = c

  64. math

    The probability of a female birth is about 0.5. over the period of a year, would there be more days when at least 60% of the babies born were girls in a.a large hospital b.a small hospital c. it makes no difference please explain your reasoning thanks

  65. History

    I need help finding some online periodicals about lapd swat during the 1950s-late 1980s. I can not find anything. Please help

  66. physics

    Which situations are examples of a particle with a non-zero acceleration? (Select all that are true for full credit.) a)A car driving around a circular track at constant speed. b)A child going back and forth on a swing c)A runner moving in a straight line

  67. spanish

    Escribe pero, sino o sino que en el espacio. Escribe solamente la palabra que falta 1)No veo a tu primo, ____ a tu padre. 2) Esa tienda vende muy buenos productos ____ son caros. 3)No les gustan los videojuegos ____ los juegos de mesa. 4) Las pilas no son

  68. college physics

    Consider a projectile that is thrown upward at an angle between 10 and 80 degrees from the horizontal, when are the acceleration and velocity vectors perpendicular to each other? (Only consider the motion during free fall.) a) nowhere b)at the highest

  69. not for school

    Hi I'm writing a story and I had a question. I am saying that one person has to jump across this... well it is kind of a pit of doom... no ending... into eternal darkness... but anyways I need to know how far the average human can jump if they have a 3ft

  70. spanish

    ¿Te gusta el nuevo portátil? No, prefiero la vieja. No, prefiero los viejos. No, prefiero el viejo.

  71. English

    e.g. In 2012 1. In twenty twelve 2. In two thousand twelve (Can we read either way? Are both readings correct?)

  72. Math

    Kareem has 28ft of fencing. He has to decide on the length and the width of his garden. Which of the following garden sizes would use exactly 28 ft of fence?

  73. Math

    Can you correct the errors? 4(x+3)=24 4(3x)=24 12x=24 12x/12= 24/12 X=2 5(x+2)=45 5x+10=45 15x=45 15x/15=45/15 x=3 5+4x=13 5+4x-4x=13-4x 5=9x 5/9=9x/9 5/9= x 56=8(x+3) 56=8x+24 56-24=8x+24-24 32=8x 32/32=8x/32 x=8/32 x=1/4 S/6+3=11 6(s/6)+ 3=6(11) S+3=66

  74. Chemistry

    from a calorimeter experiment I got this calculation: Cm=30g(4.184 J/g(Celsius))(24 Celsius-20.8Celsius)/-25g(24 Celsius-99.6 Celsius) gives Cm= .107 J/g(Celsius) I have the answer here above, but when I calculate it I get different answers could someone

  75. math

    Arrays and a Expanded Algorithm How I do23x17.

  76. college physics

    When a projectile lands, the angle made between the projectile and the ground corresponds to which of the following aspects of its motion? a)the direction of the acceleration vector just before impact b)direction of the velocity vector just before impact

  77. algebra 2

    When you spend $1 at the grocery store, the store doesn’t keep all of your money as profit. Some of it is reinvested in the economy when the grocery store buys more merchandise from suppliers. In turn, the suppliers don’t keep all of that money as

  78. English

    Thank you, very much. Here is the second part. I will post you the whole summary again after your correction. 1) Mr Otis’s daughter, Virginia, finds the ghost and he talks to her about his story. Virginia takes the ghost seriously and decides to help

  79. fractions and division

    Several friends are taking turns flying a kite. Each friend flies the kite for the same amount of time. They spend six hours flying the kite altogether. Explain what information you need to find how long each friend flew the kite.

  80. Science

    Explain the relationship between force needed, gravity, and inertia that scientists have to think about when trying to launch something in space.

  81. math

    117-3(4+2)+6

  82. PSYCHOLOGY

    Will someone please point me in the right direction. How would you select survey takers? i have completed the survey for organizational motivation. I have also decided on the population of those who will be surveyed. Thank You-

  83. Chem-Help Please!!!

    a correction needs to be made to the calculations for real gases as compared to ideal gases. apply these corrections and calculate the real pressure expected for 5 mole of nitrogen in a 1.5L container at a temp. of 20C. Note: I tried to find right formula

  84. math

    1/12y+3=-16

  85. calculus

    Two consecutive days of the week experience a maximum temperature of 90 degrees F at 1:00pm and a minimum temperature of 44 degrees F at 1:00am. Write a cosine equation measured in house that would model this behavior. Let x=0 represent 1:00pm on the first

  86. Alg2

    You are playing a game that involves drawing three numbers from a hat. There are 25 pieces of paper numbered 1 to 25 in the hat. Each number is replaced after it is drawin. What is the probability that each number is greater than 20 or less than 4 ?

  87. accounting

    Complete the work sheet. In completing the worksheet, compute State of Illinois corporate income taxes at 41/2% of pretax income. The state income tax is deductible on the federal tax return, and the federal tax is not deductible on the Illinois return.

  88. Chem- Please check :)

    The solubility of silver chromate is 500 ml of water at 25 degrees celsius is 0.0129g. Calculate its solubility product constant. n = m/M = 0.0129g/331.73g/mol = 3.888 x 10^-5mol concentration (ag2crO4)=n/V =3.888x10^-5/0.5L = 7.777 x 10^-5 ag2crO4 2ag+ +

  89. chemistry

    50 mL of a 2.50 M solution of ammonium phosphate is added to 100mL of a 1.50 M solution of calcium nitrate. At the end of the reaction 11.2 grams of precipitate produced. What is the percent yield

  90. grammar

    Identify the appropriate punctuation for the phrase in () in the sentence; The song (You Are My Sunshine) always cheers me up. italics quotation marks (my choice) single quotation marks none of the above Identify the sentence in which the word or words in

  91. geometry

    squares in a rectangle this rectangle has been divided into 11 squares what is a equation that will yield the value of x

  92. Statistics

    What percentage of times will the mean, or population proportion, not be found within the confidence interval

  93. English

    Are the two things that Carl Sandburg compares in the following poem how the fog comes in to the little cat feet? The fog comes On little cat feet. It sits looking Over harbor and city On silent haunches And then moves on.

  94. grammar(correct version

    Choose the correct version of the sentence. The bird naive but curios-flew straight towards the cat.(my choice) The bird-naive but curious-flew straight towards the cat. Can someone please check for me

  95. chemistry

    how much 10M HNO3 must be added to 1L of a buffer that is .010M acetic acid and .10M sodium acetate to reduce the pH to 5. pKa=4.75

  96. physics

    two boys paul mass 60kg and john mass 40kg are standing on skateboards. They place their hands against each other and push away from each other so that they start to move in opposite direction. (a) if paul moves to the left with velocity of 0.8m/s..

  97. English 11

    As mr. hooper is dying, he rhetorically asks those around him why people turned from him all these years. why does mr. hooper belive people have treated him like this? 1. because they thought he was insane 2. because they hid their own sinful hearts 3.

  98. Algebra 2

    Find the inverse of the following function: f(x) = 3x + 12 I don't think I worked this problem off correctly...I am suppose to find the inverse of the function Is this the correct way to work this problem? y= 3x + 12 x= 3y + 12 3y = x - 12 f-1(x) = x -

  99. Math

    enrollment in a business seminar increased from 75 to 85 people. what is the persent increase

  100. MATHS

    The entrance fees to the Science centre is as follows: Adult :$ 10 Child :$7 A group package of 1 adult and 2 children can be bought at a discounted price of $21. One day, 234 adults and 456 children visited the Science Centre. What is the minimum amount

  101. physics! Need help badly

    A 4.65 kg object is released from rest while fully submerged in a liquid. The liquid displaced by the submerged object has a mass of 2.60 kg. How far and in what direction does the object move in 0.300 s, assuming that it moves freely and that the drag

  102. physics

    Ice at -10degrees celcius and steam at 130 degrees celcius are brought together at atmospheric pressure in a perfectly insulated container. After thermal equilibrium is reached,the liquid phase at 50 degrees celcius is present. Ignoring the container and

  103. Please can you help me (Probability)

    Whether multiplying the same number to each value in the data set will affect its variance, please can you gave me an example. Thank you for your help.

  104. sociology

    What is dramaturgy and why is it useful for understanding day-to-day interactions

  105. GED-Word Problems

    Helen is taking a word processing class 2 nights a week for 13 weeks. She hires a babysitter each night she is in class. How many nights in all will she need to hire a babysitter?

  106. Chemistry

    What mass of Helium will occupy 2 times the volume of 10.0 grams of Neon if both gases are measured at STP?

  107. dynamics

    traveling with an initial speed of 70km/h. a car accelerates at 6000km/hr^2 along a straight road. how long will it take to reach a speed of 120km/hr? also, through what distance does the car travel during this time.?

  108. math

    A cable weighing 2 lb/ft is 16 ft long. If a 20-lb weight is attached to the end, find the work done in winding up the chain.

  109. math(mechanics)

    a particle moves along a straight line such that its position is defined by s=(t^2-3t^2=2)m.determine the average velocity, the average speed, and the acceleration of the particle when t=4s.

  110. Language Arts

    I can't figure out the answer to this question. Which book would not help you find information about the planet Mars. A. Visitors from Mars. B. a history of Mars. C. U.S. Robots on Mars. D. A Journty to Mars Aboard Spaceship Spirit. I think the answer is

  111. physics please HELP !

    Which situations are examples of a particle with a non-zero acceleration? (Select all that are true for full credit.) a)A car driving around a circular track at constant speed. b)A child going back and forth on a swing c)A runner moving in a straight line

  112. Chemistry

    If 30 grams of KCl is dissolved in 100 grams of water at 40 degrees celsius, how many additional grams of KCl would be needed to make the solution saturated at 80 degrees celsius?

  113. h.s. physics

    Consider a projectile that is thrown upward at an angle between 10 and 80 degrees from the horizontal, when are the acceleration and velocity vectors perpendicular to each other? (Only consider the motion during free fall.) a) nowhere b)at the highest

  114. college physics

    When a projectile lands, the angle made between the projectile and the ground corresponds to which of the following aspects of its motion? a)the direction of the acceleration vector just before impact b)direction of the velocity vector just before impact

  115. math(mechanics)

    the acceleration of a particle as it moves along a straight line is given by a=(2t-1)m/s^2, where t is in seconds.if s=1m and v= 2m/s when t=0,determine the particles velocity and position when t=6s. Also, determine the total distance the particle travels

  116. Marketing

    General Mills Warm DelightsTM: Indulgent, Delicious and Gooey! I recommend we all taste test Warm Delights prior to discussing the following questions: In what stage of the product life cycle is cake mix in the U.S.? What is the competitive set of desserts

  117. Chemistry

    At 50 degrees, 100 grams of water is saturated with cerium (III) sulfate. How many grams of cerium (III) sulfate must be added to saturate the solution at zero degrees celsius?

  118. Marketing

    Be sure to view the 4P's interactive in this week's lecture prior to entering this discussion. What rationale did you use to choose the option you chose for Our Town Photography? What changes would you recommend to the marketing mix for the Our Town

  119. Chemistry(Please respond, thank you)

    Step 1:H2O2 + I^-^ = H2O + OI^-^ step 2: H2O2 + OI^-^ = H2O + O2 + I^-^ What is the equation for the overall reaction? I am not sure how to do this since there are two equations. Which species acts as a catalyst? I know that I^-^ is the catalsyt. Which

  120. FINANCIAL ACCOUNT

    2. Robert purchases a motor car from Excellent Motors ltd whose cash price is 56,000 on January 1; 2005; Rs. 15,000 paid on signing the contract and the balance is to be paid in three equal annual installments of Rs. 15,000 each. The rate of interest is 5%

  121. math

    hello i need help for derivate this function: x+1+1/(x+2) thanks for your help

  122. economic

    All of the following are regulatory commissions dealing with industrial regulation (as distinct from social regulation) except the:

  123. Chemistry

    If your 250ml of cereal solution which came from the digestion of a 2.005g sample of cereal had 3.781 mg Fe in it, what is the mass of the Fe per gram of cereal??

  124. Trig - Please help

    Can anyone help with this question? Now suppose that, starting with the first row of seats, the floor of the seating area is inclined at an angle of Theta = 25 degrees above the horizontal, and the distance that you sit up the incline is x, as shown in

  125. Calculus AP

    5.2 The Natural logarithmic function Differentiate the function problem # 13: f(x)= sqrt(x) Inx

  126. Geographyy

    Does the Messina Plate (small piece of oceanic crust between the African and Eurasian Plates, near Messina, Italy) still exist after its forced subduction underneath the Eurasian Plate, by the African Plate?

  127. law

    How could crime help private business? Identify 10 industries or companies that could benefit from crime. Are there problems inherent in organizations benefiting from criminal activities? Why? Should organizations that benefit from crime operate as

  128. Chemistry

    A 21.2mL sample of 0.307M ammonia, NH3 is titrated with 0.259 M hydrobromic acid. What is the pH before the addition of any hydrobromic acid? I am not sure how to start this. I know I could completeit if I knew where to start. Would I set up a moles table?

  129. Mechanics A level?

    A particle P lies on a smooth horizontal surface. It is acted on by two horizontal forces of magnitudes 25 N at an angle of 30 degree with the horizontal and 20 N at an angle of 45 degree with the horizontal. Both forces acted away from the particle. A

  130. Math(Please respond)

    .50 - x / x = 3.20e-1 I need to solve for x. I was going to do .50 X 3.20e-1 and then take the square root but this is not correct. I am not sure what to do. Thank you for your help. Math(Please help) - Reiny, Tuesday, April 17, 2012 at 3:18pm You probably

  131. Analytical Chem

    Describe the preparation of 100 mL 0.50 M solution of Fe(NO3)3 from a stock solutiion that is 60%(w/w)Fe(NO3)3 solution with a specific gravity of 1.110 g/ml. Calculate the molar NO3 concentration in the resulting solution. Molar Mass of Fe(NO3)3: 241.86

  132. english

    what are the five sentences about why you think knowledge of english language registers will be important in accounting and finance?

  133. Physics

    A 190 kg hoop rolls along a horizontal floor so that the hoop's center of mass has a speed of 0.160 m/s. How much work must be done on the hoop to stop it?

  134. physics

    3 boys pulling at the end of 3 ropes held together on a knot. one boy pulls with a force of 20 Newton eastward, while a 2nd boy pulls with the same magnitude force northward. in what direction and with what force must a 3rd boy be pulling if his pull of

  135. life orientation

    in 10-15 lines critically discuss 5 ways in which human or environment problems impacts on the community in south africa.provide relevant sources to support the answer

  136. chemistry

    With the aid of chemical equation only describe how butane can be converted to but-2-ene

  137. Math

    $1000 in a savings bond on the day you were born. The bond pays 6% interest compounded annually. How much is it worth in 18 yrs? I know it earns $60 a yr. but I am lost after that.

  138. algebra-trig help asap

    Evaluate the expression. Assume that all angles are in Quadrant I. 14. tan(arccos 3/5)

  139. social studies

    Why did the Tokugawa shogunate keep Japan isolated from 1603 until 1853?

  140. English

    Writeacher,could you please check if everything is Ok. Thank you very much for your invaluable help! 1) Swift was born in Ireland of English parents. He was also educated there and he became a priest. 2) He left Dublin for England in 1689 to reside (stay

  141. chem

    How many molecules are in 12.2 g NO2? Answer in units of molec

  142. math

    The temperature at 8:00pm is 32 degrees. If it dropped 3 degrees per minute, what is the temperature at 8:30pm

  143. physics

    while standing on an open truck moving at a velocity of 35m/s, a man sees a duck flying diresctly overhead. The man shoots an arrow at the duck and misses it.. the arrow leaves the bow at a vertical velocity of 98m/s. the truck accelerates to a constant

  144. Math - 2nd try

    Please show me how to set up and solve: You have 6 cups of sugar. It takes 1 cup of sugar to make 24 cookies. The function c(s) = 24s represents the number of cookies, c, that can be made with s cups of sugar. What domain and range is reasonable for the

  145. chem

    Determine the mass of 7.79 ×1023 atoms Cl. Answer in units of g

  146. Physics

    A flywheel accelerates from rest to an angular velocity of 10.44rad/s at an angular acceleration of 51.57rad/s^2. The diameter of the flywheel is 1.16m. At this instant, calculate the resultant linear acceleration, in m/s^2, of a point on the circumference

  147. statistics

    The average hemoglobin reading for a sample of 20 nurses was 16 grams per 100 mL, with a sample standard deviation of 2 g. Assume the hemoglobin readings are approximately normally distributed. The 98% confidence interval for the true mean hemoglobin

  148. science

    Brandon throws a flying disc with a force of 8 N. If the disc has an acceleration of 4 m/s2, what is the mass of the disc?

  149. algebra

    Solve this please! -2(2f-4)=-4(-f+2)

  150. Life orientation

    recommendations how to address the people on floods

  151. accounting

    what are the five sentences about why you think knowledge of english language registers will be important in accounting and finance?

  152. physics

    The focal length of lens is 5.0cm. How far from the lens must the opbject be placed to produce an image 1.5cm from the lens

  153. math

    how do I solve PATH*AT=DENSE using the numbers 6,3,4,1,7,2,0,9. Thanks

  154. English

    I have a few questions on sentences I wrote last week. Could you please check them? 1) In the summary of Gulliver's travels I used the present but a few sentences are in the past. 2) When Gulliver comes back home in England, his wife and his other family

  155. Physics

    A ferryboat traveling at a speed of 30 km/h attempts to cross a river with a current of 5 km/h. What is the boat's speed relative to the shore? 8 km/h 25 km/h 30.4 km/h 32.8 km/h

  156. Statistics

    A lorry carries heavy cartons of goods. The weights of theses cartons are distributed about a mean of 100 kg and with a standard deviation of 7 kg. Find how many cartons the lorry can carry so that the probability of the total load exceeding 4500 kg is

  157. Math

    Factor and find the value of K in 36x^2+18x+K.

  158. english

    what are the five reasons why knowlegde of english language registers is important in accounting and finance?

  159. Geometry

    The height of a parallelogram is 10 feet more than its base. If the area of the parallelogram is 120 square feet, find its base and height.

  160. Math

    1.73 revolution per second is equal to X radian per second. What is X?

  161. algebra

    Betty is 6 years older than Deb. 13 years ago, Betty was 4 times older than Deb. How old is Deb?

  162. physics

    A projectile is launched at an angle of 600. What other angle would give the same range for the projectile if we neglect air resistance?

  163. math fractions and decimals

    How do you can you change a decimal to a fraction when the fraction looks like this 0.43 3/4 or .16 2/3 .How can I change this to a fraction?I tried dividing it by 100 but it doesn't give me the right answer.

  164. Chemistry

    How would you prepare 50.00 mL of 0.25 Molar NaCl from 2.00 Molar NaCl?

  165. Pre-cal

    10.2 can someone show me this graph(x+2)^2/4+(y+2)^2/15=1

  166. Networking

    A firm is assigned the network part 128.171. It selects a 10-bit subnet part. a)Draw the bits for the four octets of the IP address of the first host on the first subnet. b)Convert this answer into dotted decimal notation. c)Draw the bits for the second

  167. math

    from one piece of wood , Sam cut two 9 1/2 in. strips for 2 sides of a frame. He cut two 11 3/4 in . strips each for the other 2 sides Sam had 5 1/2 in.of wood left. How long was the piece of wood when he started ?

  168. statistics

    A TV pollster believes that 75% of all TV households would be tuned in to Game 6 of 1997 NBA Championship series between the Chicago Bulls and the Utah Jazz. A sample of 1000 TV households was selected and 722 indicated they were tuned into the game. Find

  169. Networking

    In your browser, you enter the URL of a website you use daily. After some delay, you receive a DNS error message that the host does not exist. a) What may have happened? Explain your reasoning. b) How would you logically disconfirm or test each

  170. physics

    A person's body is producing energy internally due to metabolic processes. If the body loses more energy than metabolic processes are generating, its temperature will drop. If the drop is severe, it can be life-threatening. Suppose a person is unclothed

  171. math

    Answer by factoring a quadratic equation. The length of an open-top box is 4 cm longer than its width. The box was made from a 480-cm^2 rectangular sheet of material with 6cm by 6cm squares cut from each corner. The height of the box is 6cm. Find the

  172. math

    your best friend ate 3/8 of a pizza from 4 diffrent pizza.how much pizza did he ate?

  173. cHEMISTRY

    CALCULATE THE HEAT ENERGY JUST AFTER MIXING AS (mCpT) for the total mass of water, using Cp=4.184J/g-c

  174. World Geography

    Why have the attempts at modernizing many of the African economies not been able to increase the countries' wealth?

  175. Math

    If a turntable rotates through 720 degrees in one second, how many revolutions does it make in one minute. 120?

  176. Human Resources In Health Care

    How do human resource laws or health care regulations affect performance appraisals? What are the legal implications a manager must consider when conducting performance appraisals?

  177. pre-cal

    find an equation for the hyperbola vertices (3,0),(3,4) asymptotes:y=2/3,y=4-2/3x

  178. World Geography

    Why have modernization projects in Africa not brought increased wealth to the region?

  179. statistics

    Waste Today Services operates a garbage hauling company in a South Jersey city. Each year, the company must apply for a new contract with the city. The contract is in part based on the pounds of garbage hauled. Part of the analysis that goes into the

  180. math

    Please show me how to set up and solve: You have 6 cups of sugar. It takes 1 cup of sugar to make 24 cookies. The function c(s) = 24s represents the number of cookies, c, that can be made with s cups of sugar. What domain and range is reasonable for the

  181. writing decimals

    how to write 0.924 as a decimal

  182. mth, trig

    Given cos a=-7/25 in quadrant II , and sin b=-12/13, in quadrant IV , find cos(a+b) and sin2a

  183. math

    The value of a $20,000 car decreases every year, t. the equation below models this sitution: 20000(1 - 0.04t) = 13,000. Please explain how to work this problem.

  184. math

    Mrs Sim spent some money on 45 buns. She spent the same amount of money on 20 muffins. Each muffin cost $0.95 more than each bun. How much did she spent altogether?

  185. trig

    a 7 foot tall man is standing 65 feet away from a tower. if the angle of elevation is 35 degrees. what is the height of the tower to nearest tenth of a foot?

  186. chemistry

    If 0.45 mol of neon gas occupies a volume of 789 mL at a certain temperature and pressure, what volume would 0.376 mols of neon occupy under the same conditions? what Law is used to solve?

  187. calculus

    use differentials to approximate the value of the squareroot of 4.3

  188. Calculus

    the edge of a cube was found to be 18 inches with a possible measurement error of 0.1 find the max possible error in calculating the surface area of the cube

  189. World Geography

    How has climate affected population patterns in Africa?

  190. Algebra 2 (Quadratic Equations)

    Is the point (-3, -2) a solution of the intersection of the following set of quadratic equations: Y < -X^2 X^2 + Y^2 < 16 I'm not sure how to actually work this problem out. Can anyone help me with this problem please.

  191. Constitutional Law

    is the exclusion of evidence that is obtained through an improper search the appropriate response to an improper search or is there a better way to deal with such situation

  192. statistics

    The Deborah Heart Institute performs many open-heart surgery procedures. Recently research physicians at the Institute developed a new heart bypass procedure that they believe reduces the average length of recovery. The hospital board will not adopt the

  193. Math

    Does cos(1/x^2) diverge?

  194. Statistics

    Through extensive research, Metlife Insurance claims that the mean footwell intrusions for Toyota Corrola and Toyota Rav4 are equal. Crash test at 40mph were performed at 7 randomly selected Toyota Corrola and 13 randomly Toyota Rav4s selected. The amount

  195. statistics

    The ages (in years) of 10 infants and the number of hours each slept in a day Age, x: 0.1, 0.2, 0.4, 0.7, 0.6, 0.9, 0.1, 0.2, 0.4, 0.9 Hours slept, y: 14.9, 14.5, 13.9, 14.1, 13.9, 13.7, 14.3, 13.9, 14.0, 14.1 Find the equation of the regression line. Then

  196. physics

    Given that the power consumed by a device is 1000 W operating on a 70-V line, calculate the amount of current it draws.

  197. math

    kim uses 15 shells to make a picture frame. 2/3 of the shells she uses are white. the remainder are yellow. how many shells used are yellow?

  198. statistics

    Data from the latest census was analyzed. It was determined that one-parent households spend less on food away from home that do two-parent households. The mean amount spent by 30 one-parent households is $1876 and the standard deviation is $113. The mean

  199. math

    May and Bill took 49 hours to complete their History project. They worked separately on their own project. If May had worked 5 hours less and Bill had worked 6 hours more, May would have put in 2 hours more than Bill. How many hours did May put in for the

  200. statistics

    The manager at the YMCA believes members are staying longer at the Y due to what they feel was a very successful marketing plan. Studies show the previous mean time per visit was 36 minutes, with a standard deviation = 11 minutes. A simple random sample of

  201. statistics

    A study in Orlando, Florida claimed that the mean commute time for all employees working at Disney exceeds 40 minutes. This figure is higher than what was assumed in the past. The plan is to test this claim at a level of significance = 0.05 and a sample

  202. 7th Grade Math

    Linda's teacher divided the class into groups of five and required each member of a group to meet with every other member of that group. How many meetings will each group have?

  203. math

    How do I do 33 6/10 in decimal

  204. Please Help:D

    Point N is on hypotenuse BC of triangle ABC such than angle CAN is 45 degrees. If AC=8 and AB=6, find AN.

  205. algebra-trig help asap

    x=sec^-1 2 I really need help with this problem. Thanks

  206. math

    What is the total number of vetices in a rectangular prism with a length of 7.5 inches a width of 2.5 inches and a height if 11 inches?

  207. Life orietation

    Identify and describe one environmental problem(that causes ill health accidents)

  208. matyh

    Eric bought a car for $6500. If the sales tax was 5.75%, what was the total cost?

  209. math

    You have decided to move 300km away from your current residence. The truck costs $40 per day and $0.12 per kilometre. If it will take you 2 days to return the truck, how much will the round trip cost you? (Assume that tax is included.)

  210. algebra2

    evaluate without using a calculator 216 2/3

  211. Phala high school

    Two institution/ community organization that are involved in supporting or giving redress to the teenage pregnancy?

  212. to ms.sue

    you are the smartest person i ever known so im asking you. what does rumor mean. it was in our story. but what does rumor have to do with the gold rush?

  213. g.k.

    A. A car is traveling at a speed of 55 mi/hr along a banked highway having a radius of curvature of 500 ft. At what angle should the road be banked in order that a zero friction force is needed for the car to go around this curve?

  214. Geometry

    A right prism has bases that are squares. The area of one base is 81 square feet. The lateral area of the prism is 144 square feet. What is the altitude of the prism.

  215. Chemistry

    a saturated solution of barium chloride at 30C contains 150g water. How much additional barium chloride can be dissolved by heating this solution to 60C?

  216. help

    B. A vehicle on a monorail has a speed S = 10 m/s and an acceleration S=4m/s2 relative to the ground reference XYZ when it reaches point A. Inside the vehicle, a 3 kg mass slides along a rod which at the time of interest is parallel to the X axis. This rod

  217. help

    A. A light plain is coming in for a landing at a speed of 100 km/hr. The wheels have zero rotation just before touching the runway. If 1/10 the weight of the plane is maintained by the upward force of the runway for the first second, what is the

  218. hhhhhhhhhhh

    A. A Bowler releases his ball at a speed of 3m/sec. If the ball has a diameter of 250 mm, what spin w should be put on the ball so there is no slipping? If he puts on only half of this spin w, keeping the same speed of 3 m/sec., what is the speed after .3

  219. math

    ∫[(x^2)/(√(4x^3-1))]

  220. algebra

    what is the answer to this 15y < -5

  221. Psychology

    Forty-five-year-old Guy is in his midlife transition. According to Carl Jung, Guy should be in the process of accomplishing which two difficult tasks? eventual death his family assertively A. Giving up his image of youth and acknowledging his B. Becoming

  222. Chemistry

    CH4+2O2-->CO2+2H2O How many Liters of carbon dioxide will be produced at 24 degrees celcius and 725mm Hg from the combustion of a 15.0 gallon tank of methane? How much energy is associated with combusting a 15.0 gallon tank of methane?

  223. Algebra 2

    √3x-4=2√x-5 Solve this equation, if there is more then one answer separate with a comma

  224. PSYCHOLOGY

    Will someone please point me in the right direction. How would you select survey takers? i have completed the survey for organizational motivation. I have also decided on the population of those who will be surveyed. Thank You-

  225. word problem

    A farmer decides to enclose a rectangular garden, using the side of a barn as one side of the rectangle. What is the maximum area that the farmer can enclose with 80 feet of fence? What should the dimensions of the garden be to give the area?

  226. intermediate algebra

    Factor out the greatest common factor from the expression 7x^2+56x-21

  227. intermediate algebra

    Use the difference of squares rule to factor the following expression....81z^2-49y^2

  228. intermediate algebra

    Factor the expression 64a^2-16ab+b^2 into a product of binomials

  229. intermediate algebra

    Factor the expression 25x^2- 60xy+36y^2 into a product of binomials

  230. algebra

    the weight of a symetry ball varies directly with the cube of it's radius a ball with the radius of 2 inches weighs 5.60. find the weight of a ball with a 3 inch radius

  231. Life orientation

    In 10-15 lines critically discuss 5 ways in which the human or environmental problem impacts on the community.

  232. Algebra 2

    x= √3x+12+2

  233. Algebra

    Simplify the root. The square root of (-x)^14. Why is the answer the absolute value x^7?

  234. Physical science

    Anyone working on Sound Investigation lab

  235. to bobpursley

    thank you so much!

  236. Calculus

    Find the area of the region enclosed by the given curves: y=e^6x, y=2sin(x), x=0, x=pi/2

  237. Physics

    Crane A has 2.0 as much power as Crane B. If Crane B can do 9492 Joules of work in 12.492 minutes, how many Joules of work can Crane A do in 12.492 minutes?

  238. to ms.sue

    thank you!

  239. Physics

    A 9.67-m ladder with a mass of 25.0 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upward with a force of 242 N. At the instant the top of the ladder leaves the ground, the ladder experiences an angular

  240. math, trig

    Graph one period of the following function. Show all work . y=2sinx+2cosx

  241. Maths grade 10

    A road-worker holds a flag in position R with an out stratched arm he swings the flag downwards and it forms an angle of 30 degree with the ground P.his shoe Q is 2,5 metre away from P.his head is 24 centimetre above his shoulder(s).calculate the height of

  242. Grade 12 Math

    You have decided to rent a room in your house. The current rent is $450.00/month. If the rent cap is 2.75%, how many years will it take until you can charge at least $525.00/month?

  243. physics

    A sealed container contains 1 mole of neon gas at STP. Estimate the number of neon atoms having speeds in the range from 200 m/s to 202 m/s. (Hint: Assume the probability of neon atoms having speeds between 200 m/s and 202 m/s is constant).

  244. Finance

    The target capital structure for QM Industries is 39% common stock 6% is preferred stock, and 55% debt. If the costs of common equity for the firm is 18.2%, and the cost of preferred stock is 9.4%, the before tax cost of debt is 7.5%, and the firms tax

  245. physics

    Two disks are rotating about the same axis. Disk A has a moment of inertia of 3.7 kg · m2 and an angular velocity of +7.3 rad/s. Disk B is rotating with an angular velocity of -9.5 rad/s. The two disks are then linked together without the aid of any

  246. Life Orientation

    5ways in which the human or environmental problem impacts on community.

  247. chem

    Brandon throws a flying disc with a force of 8 N. If the disc has an acceleration of 4 m/s2, what is the mass of the disc?

  248. life oriantation

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

  249. science

    A trash can is rolling down the street at 5 m/s. If the trash can has a mass of 23 kg, what is its momentum?

  250. Physics

    If a car delivers 76.2 hp of power, how much time will it take for the engine to do 5.78e5 J of work?

  251. Physical science

    A wave travels along a string at a speed of 1,5m 1s.if the frequency of the source of the wave is 7,5hz,calculate:(a)the wavelength of the wave..(b)the period of the wave

  252. Algebra

    Simplify the expression. p^3/5(p^2/5+3p^12/5)

  253. science

    Thermal energy is different from temperature because thermal energy depends on the _____.

  254. science

    Which of the following scales use the concept of absolute zero? I. C II. F III. K IV. R

  255. English

    Writeacher, I urgently need you to check this paragraph. I really hope you can help me. As it is a short summary of Wilde's Canterville Ghost, I think it should be in the present. Can you suggest a site containing a simple and concise summary of the story?

  256. physics

    The shock absorbers in the suspension system of a car are in such bad shape that they have no effect on the behavior of the springs attached to the axles. Each of the identical springs attached to the front axle supports 351 kg. A person pushes down on the

  257. physics

    The shock absorbers in the suspension system of a car are in such bad shape that they have no effect on the behavior of the springs attached to the axles. Each of the identical springs attached to the front axle supports 351 kg. A person pushes down on the