Questions Asked on
May 4, 2014

  1. Chemistry

    Balance the following equation for a half reaction that occurs in basic solution. Use e– as the symbol for an electron. SO3^2- ---> S2O4^2-

    asked by BOB
  2. Chemistry

    Using a table of standard reduction potentials, determine the best answer to the following questions. a) Which of the following reagents would oxidize Cr to Cr3 , but not Ag to Ag ? Choices: Ca^2+, Br2, Co^2+, Ca, Br^-, or Co. b) Which of the following

    asked by Alexis
  3. Chemistry

    In a particular redox reaction, MnO2 is oxidized to MnO4– and Cu2 is reduced to Cu . Complete and balance the equation for this reaction in acidic solution. Phases are optional. MnO2 + Cu^2+ ---> MnO4^- + Cu^+

    asked by BOB
  4. Physics

    A vibrating point on a spring travels 60 mm during three cycles. What is the amplitude of the vibration?

    asked by Liz
  5. Chemistry

    Ethanol (C2H5OH) melts at -114 degrees Celsius. The enthalpy of fusion is 5.02 kj/mol. The specific heats of solid and liquid ethanol are 0.97 J/g-K, respectively. How much heat (kJ) is needed to convert 25.0 g of solid ethanol at -135 degrees Celsius to

    asked by Kylie
  6. CRJ

    1. Which of the following was an impact on policing as a result of WWII? (Points : 1) The Pendelton Act An increase in educational requirements for police A shortage of experienced officers The adoption of residency requirements for police Question 2. 2.

    asked by Scott
  7. statistics

    John Davis, a manager of a supermarket, wants to estimate the proportion of customers that will be using food stamps at his store. How large a sample is required to estimate the true proportion to within 3% with 98% confidence?

    asked by Mark
  8. math check probability

    5. A bag contains 7 green marbles and 4 white marbles. You select a marble at random. What are the odds in favor of picking a green marble? A. 7:11**? B. 7:4 C. 4:7 D. 3:7 ------------------------------------ 6. Food Express is running a special promotion

    asked by k.k
  9. Statistics

    Reginald Brown an inspector from the department of weights and measures, weighs 15 eighteen-ounce cereal boxes of corn flakes. he finds their mean weight to be 17.78 ounces with a standard deviation of .4 ounces. are the cereal boxes lighter than they

    asked by Mark
  10. statistics

    a medication is 75% effective against a bacterial infection. find the probability that if 12 people take the medication, at least 1 person"s infection will not improve

    asked by Anonymous
  11. Geometry

    Which if the following is equivalent to 7pi/4? A.285 degrees B. 305 degrees C. 315 degrees D. 330 degrees E. 375 degrees

    asked by Emma
  12. english

    Paraphasing practice In 1857, a British expedition led by Richard Burton and John Speke set out to find the great lakes shown on Ptolemy's map. After reaching Lake Tanganyika, the two men split up because Burton was ill.

    asked by Tamara
  13. Chemistry

    Calculate the cell potential for the following reaction as written at 25.00 °C, given that [Zn2 ] = 0.842 M and [Ni2 ] = 0.0100 M. Standard reduction potentials can be found here. reaction: Zn(s)+Ni^2+(aq)--->Zn^2+(aq)+Ni(s) standard reduction Zn: -.76

    asked by Sophie
  14. English

    Fill in the blank with verb in parentheses Have you ever ___ to prom before?___last year as a sophomore Thanks

    asked by snow
  15. math

    List the three sections of the statement of cash flows.

    asked by tota
  16. chemistry

    A 2.00 g sample of a particular compound was dissolved in 15.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85ºC. For pure CCl4, TB = 76.50ºC and KB = 5.03°C·kg/mol Calculate the boiling point elevation, ΔTB,

    asked by sarah
  17. AStronomy/ Math

    I do not understand how to do one of my online homework questions: What is the Schwarzschild radius of a 100 million-solar-mass black hole? The mass of the Sun is about 2 × 1030 kg, and the formula for the Schwarzschild radius of a black hole of mass M

    asked by Kaitlyn
  18. business&technical english

    When you know your audience would be receptive to your message, you use ------ approach.

    asked by zobuia
  19. MATH

    On a TV game show, a contestant makes $600 for every correct answer but loses $500 for every wrong answer. After answering 22 questions, Sarah broke even. How many questions did she answer correctly?

    asked by TAYLOR
  20. math

    SHURGRO fertilizer contains 18% ammonia plus carbon compounds.If 80% of the ammonia contains the chemical element nitrogen, what percent of this fertilizer is nitrogen? a. 14.4% b. 18% c. 38% d. 40% e. 62% please answer and explain

    asked by thomas
  21. science

    1. Why do earthquakes occur along the San Andreas Fault? a. Two plates meet at the San Andreas Fault and they slide next to each other causing earthquakes b. Two plates converge at the San Andreas Fault causing earthquakes*** c. Two plates pull apart at

    asked by what
  22. physics

    the length of nylon rope from which a mountain climber is suspended has a force constant of 1.40*10^4. how much would this rope stretch to break the climbers fall if he freefall 2.00 m before the rope run out of slack

    asked by sara
  23. math

    Paul bowled 6 games today. His scores are shown below. Game 1: 158 Game 2: 124 Game 3: 110 Game 4: 167 Game 5: 146 Game 6: 165 a. What was Paul's median score for the 6 games? Answer: 152 b. What was Paul's mean score for the 6 games? Answer: 145 c. Paul

    asked by anonymous
  24. Physics

    A soccer player kicks a 0.43 kg ball straight up to see how far it will rise. The ball starts with a velocity of 16m/s at a height of 0.85m above the ground. It rises then falls straight down to the ground. a) what is the total energy of the ball just

    asked by cee
  25. Statistics

    σ = sqrt[ P * ( 1 - P ) / n ] = sqrt [(0.8 * 0.2) / 100] = sqrt(0.0016) = 0.04 z = (p - P) / σ = (.73 - .80)/0.04 = -1.75. What type of formula is this problem?

    asked by Linda
  26. finance

    It’s been two months since you took a position as an assistant financial analyst at Caledonia Products. Although your boss has been pleased with your work, he is still a bit hesitant about unleashing you without supervision. Your next assignment involves

    asked by mamey
  27. Math (check)

    4. A spinner is divided into 10 equal sections numbered from 1 to 10. You spin the spinner once. Find P(not even). A. 1/3 B. 1/2 C. 1/5*****? D. 1/4

    asked by me
  28. mathematics

    Two equal circle touch externally at point P. PX and PY are chords in the respective circles which are perpendicular. If the centres Are A and B. Show that AX is parallel to BY and AXYB is a parallelogram.

    asked by Anonymous
  29. Assessment In Ece

    Eastern cultures consider a child's standing up for his own rights

    asked by keyon
  30. Science

    Explain the energy transformations during skydiving Explain what happens once a skydiver reaches terminal velocity please help...i cant find any information...please note that I need to EXPLAIN

    asked by Anonymous
  31. algebra

    preform the given set operation U= 1,2,3,4,5,6,7,8,9,10 {1,3,6}{2,4,9}

    asked by Mary Ann
  32. math

    It has been estimated that 0.8% of a certain country's population are homeless. Now 0.8% is a small percentage, but there are approximately 313 million people in the country, and 313 million is a large number. Approximately how many people are homeless?

    asked by TAYLOR
  33. math

    Your optimal exercise heart rate for cardiovascular benefits is calculated as follows: Subtract your age from 220 and then find 80% of the difference. the rate for a 40 year old is 144 and the rate for a 10 year old 168 Rounded to the nearest whole number,

    asked by taylor
  34. Math

    Find the quadratic polynomial whose graph goes through the points (-2,5), (0,5), and (1,11). f(x)= ______x^2+ ______x+ _______

    asked by Lucy
  35. chemistry

    A balloon of methane gas, CH4, has a temperature of -2 degrees celcius and contains 2.35g of the gas. What is the temperature in kelvin and how many moles of gas does the balloon contain?

    asked by darleen
  36. math

    what is the rule for the function shown in the table below? x -1 0 1 2 y -2 1 4 7

    asked by steve
  37. MATH ✿╣Check╠✿

    A bag has 6 green marbles, 4 red marbles, 5 yellow marbles, and 3 purple marbles. What is the probability of choosing a purple marble? 1/6**? 6/18 3/20 1/9

    asked by luna
  38. MATH ✿╣Check╠✿

    8. There are 5 different cookies in a bag. One of them is your favorite, chocolate chip. What is the probability that you will not get your favorite? 1/5 2/5 24/25 4/5**?

    asked by luna
  39. Medical ethics

    What should I expect from this course. The title pretty much explains it but I would like some more detailed information please

    asked by Brandy
  40. Statistics

    Dr. Hernandez plans to measure FEV in a random sample of n young women from a certain popu- lation, and to use the sample mean y ̄ as an estimate of the population mean. Let A be the event that Hernandez’s sample mean will be within ±100 ml of the

    asked by Audrey
  41. applied statistics

    how to remember the difference between dependent and independent variable and which one is X n Y ?

    asked by Katon
  42. physics

    suppose the length of a clock's pendulum is increased by 0.01 exactly at noon what time will be exactly next day by noon

    asked by sara
  43. Statistics

    If I'm sampling 50 people and 35 people liked Pepsi instead of Coke how can i apply that to the test statistics for a mean t=x(bar)-mule/s/ square root n

    asked by Taylor
  44. math

    The distance between two points is correctly expressed as 720 statute miles or 630 nautical miles. Which of the following most closely approximates the value of one statute mile in terms of nautical miles? a. 0.88 b. 0.89 c. 0.90 d. 1.14 e. 1.25 please

    asked by thomas
  45. Math- Statistics

    An epidemiologist is planning a study on the prevalence of oral contracep- tive use in a certain population. She plans to choose a random sample of n women and to sue the sample proportion of oral contraceptive users (pˆ) as an estimate of the population

    asked by Needs Help
  46. English

    It for speech i represent at school.english is the language of opportunity.why bother to teach indigenous languages?

    asked by Thembeka nzama
  47. Math

    Your cell phone cost $40 per month plus $0.15 for each text message you send or receive. You have at most$45 to spend on your cell phone bill. What is the maximum number of text messages that you can send or receive next month?

    asked by Pablo
  48. UNIVERSITY

    a sound wave has a beta that is 10 dB, calculate the intensity of the sound wave in units of international standards and the amplitude of the pressure wave

    asked by rosa
  49. physics

    How would a diamond look if there were no dispersion?

    asked by ryan
  50. Math

    The temperature of an object in a experiment is T(t) = 60(1/3)^t + 10, where T is the temperature in degrees C and t is time in seconds. What is the domain and range of this situation?

    asked by Tom
  51. Math

    The Book Nook makes four times as much revenue on paperback books as on hardcover books. If last month's sales totaled $124,300, how much was sold of each type book?

    asked by Anthony
  52. math

    A rikhshaw covered 2 km/hr and return back at a speed of 11 km/hr find the average speed of the rickshaw

    asked by jatin
  53. Criminal Justice - Ethics

    Which of the following concepts best captures the utilitarian notion that each person's welfare is equally important and, thus, that no one person's happiness should be regarded as more important than any other person's? A. Fecundity B. Psychological

    asked by Erica
  54. Algebra I

    what does factoring the sum or difference of two cubes mean

    asked by Allie
  55. Algebra

    Solve. • x = 2 • x = –2 • x = 28 • x = –28 How?

    asked by Sandra
  56. Physical science

    a swimming pool is 25 m long and 10 m wide and is filled to an average depth of 1.5 m how many kilogram of water does it contain?

    asked by Tin
  57. reading

    i did all of them except these i need help all the questions look like they repeat themselves i don't know if i'm doing them correct 1.how does shakespeare use situationaL irony in act 1 to introduce or develop the impulsive thinking theme 2.what is verbal

    asked by yasminb
  58. chemistry

    the mass of a certain mixture of BaO and CaO is found to be exactly one half that of the mixed sulfates formed from it by the action of H2SO4. calculate the percentage of BaO and CaO in the mixture.

    asked by jane
  59. algebra

    (7 square of p)/ (square of p)

    asked by joe
  60. English/Mythology

    What is ironic about the death of Jason and Theseus from Greek mythology

    asked by Tom
  61. English/Mythology

    What is a ritualistic interpretation of the story of Theseus

    asked by Tom
  62. chemistry

    The chemical reaction for dissociation of an acid is: HA + H2O → H3O+ + A- Assuming all of the hydronium ion (calculated in in the previous problem) comes from this reaction, what is the concentration of conjugate base, [A-], in this system?

    asked by sarah
  63. chemistry

    The acid dissociation constant, Ka, for this reaction is given by the following formula (this is also in your book): Ka=[H3O+][A−][HA] The acid concentration, [HA] is given in the introductory information of this problem. Using this information and your

    asked by sarah
  64. science

    Predicting Table of radioactive isotopes below Isotope type of decay Uranium-238 Alpha Nickel-63 Beta Iodine-131 Beta Radium-226 Alpha With the help of a periodic table, predict the element that forms in each case. Explain your reasoning.

    asked by Andrean
  65. chemistry

    1. A 2.00 g sample of a particular compound was dissolved in 15.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85ºC. For pure CCl4, TB = 76.50ºC and KB = 5.03°C·kg/mol Calculate the boiling point elevation,

    asked by sarah
  66. chemistry

    What is the pH of a solution if [H+] = 2.3 x 10–5 M?

    asked by Anonymous
  67. Ethics in Criminal Justice

    Which of the following, according to Carl Klockars, is NOT an important consideration in determining whether the good ends of police work justify immoral means in a given scenario? A. Are there other, non-dirty, means that may be effective but that we may

    asked by Pat
  68. English

    Traditional african marriage is an advantage for men only not women

    asked by Zinhle
  69. Physics

    A 0.45kgkg mass oscillates in simple harmonic motion on a spring with a spring constant of 160N/mN/m .What is the period of the oscillation?

    asked by Spaceman
  70. Math

    A wheel with radius 2 cm is being pushed up a ramp at a rate of 6 cm per second. The ramp is 520 cm long, and 260 cm tall at the end. A point P is marked on the circle. How far does the wheel travel in one rotation?

    asked by Devon
  71. Science

    What happens to the resultant force on each point of the skydive?

    asked by Anonymous
  72. math

    Describe how the QuickZoom feature of QuickBooks does or does not provide the same help in the statement of cash flows as it does in the income statement

    asked by tota
  73. algebra

    Which of the following ordered pairs is included in the solution set of the system, y < 2 - 2x and y > 2x -3? (4, 0) (0, 0) No Solution (3, 4) 2. Choose all correct answers. Which of the following are solutions of the system? x < 3 and x + y < 5 (2, 2) (4,

    asked by Andrean
  74. English

    NEtholic REvolution -->How did agricultural advancements impact society? What are three reasons for that? How did agricultural advancements impact society?

    asked by Nicolas
  75. business

    Hercules Films is deciding on the price of the video release of its film Bride of the Son of Frankenstein. Marketing estimates that at a price of p dollars, it can sell q = 240,000 − 15,000p copies, but each copy costs $4 to make. What price will give

    asked by Dominic Cigliano
  76. finite math

    Hercules Films is deciding on the price of the video release of its film Bride of the Son of Frankenstein. Marketing estimates that at a price of p dollars, it can sell q = 240,000 − 15,000p copies, but each copy costs $4 to make. What price will give

    asked by Dominic Cigliano
  77. Global History

    I need answers for "GLOBAL HISTORY REGENTS REVIEW" packet. Associated names are Mr. Moeller and Mrs. Sita. I can't find answers anywhere. The packet can be found blank online here: johnbowne DOT

    asked by Nick
  78. French

    We have to respond to these questions in the negative form.I did some but need help with these. Please help, please and thanks Est-ce que les artistes ont utilise des boutons dans le collage? Est-ce que les visiteurs ont mange du gateau a l'exposition?

    asked by Epic
  79. Algebra

    The time, t, required to drive a certain distance varies inversely with the speed, r. If it takes 7 hours to drive the distance at 55 miles per hour, how long will it take to drive the same distance at 65 miles per hour? • about 6.25 hours • about

    asked by Sandra
  80. physics

    12.8 kg of ice at 0 C is dropped into 3.3 kg of water at C. What fraction of the ice melts? =

    asked by johnny
  81. Physics

    8.2 kg of ice is taken from a temperature of -49 C into steam at 123 C. What is the energy used? Q_total =

    asked by Joseph Smith
  82. physics

    Question Part Points Submissions Used 1 2 3 4 0/0.37 0/0.37 –/0.37 –/0.37 4/15 1/15 0/15 0/15 Total 0/1.48 ...A diamond in air is illuminated with white light. On one particular facet, the angle of incidence is 46.05°. Inside the diamond, red light

    asked by ryan
  83. Algebra 1b

    Determine the equation of g(x) that results from translating the function from f(x)=(x+2)^2 to the right 6 units

    asked by Lisa
  84. Chemistry

    If you dissolve 13.5 g of malic acid, C4H6O5, in half a liter of water (0.500 L), what is the molarity of the acid in the solution?

    asked by Ashley
  85. math

    Sunflower seeds are sold in packages that weigh 5 1/4 ounces. If there is a supply of 357 ounces of sunflower seeds. how many packages of seed can be made?

    asked by lew
  86. CHEMISTRY

    The enthalpy of solution of nitrous oxide (N2O) in water is -12 kJ/mol and its solubility at 20 oC and 1.00 atm is 0.121 g per 100. g of water. Calculate the molal solubility of nitrous oxide in water at 1.600 atm and 20 oC. Hint, first find Henry's law

    asked by Raoul
  87. math

    a case of diet cola costs $7.23. If there are 24 cans in a case, find the cost per can. Round to the nearest cent. then find the number of cans you can buy per $1. Round to the nearest ten. Which number is more useful? why?

    asked by brianne
  88. physics

    A 3.8 kg ball is rolling along a slippery road at 1.5 m/s E. It then rolls onto a patch of grass and slows to a stop over a distance of 3.6 m a) calculate the total work on the ball b) calculate the net force that caused the ball to come to a stop (force

    asked by cee
  89. Physics

    A car's engine is only 12% efficient at converting chemical energy in gasoline into mechanical energy. If it takes 1.8 x 104 N of force to keep the car moving at a constant speed of 21 m/s, how much chemical energy would be needed to move the car a

    asked by Lily
  90. help

    A sound wave travels at 343 m/s and a compression passes by every 12 ms. What is the wavelength of this sound?

    asked by Physics
  91. law

    The crime analysis technique involves the study of crime and/or social problems in a specific area is Tactical crime analysis

    asked by Anonymous
  92. chemistry

    Can CoBr2+ NH4Br + NH4OH ---> Co^2+ (aq) + 2NH3 (l) + H^+ (aq) + H2O (l) + 3Br^- form the complex [Co(NH3)5Br]Br2 if so please explain

    asked by ellie
  93. business&technical english

    . When business messages use a/an ----- or ------ attitude, they risk sounding selfish and uninterested in the audience.

    asked by zobuia
  94. business&technical english

    When we avoid using words and phrases that unfairly or even unethically categorize or stigmatize people in ways related to gender, race, ethnicity, age or disability, this is called

    asked by zobuia
  95. business&technical english

    --------- language is used to make comparisons in business communication

    asked by zobuia
  96. Algebra

    I have to identify the system of equations, if any for: -2x-4=1, 12=-6x-3 no solution? infinitely many solutions? (0,-1)? or (-1,0)?

    asked by Sandra
  97. chemistry

    Pasta packages often have different direction for cooking at high altitudes. a.) According to the directions, should you boil the pasta for a longer to shorter time? Why? b.) If the pasta water boils rapidly over medium-high heat, is there any reason to

    asked by mai
  98. English

    What kind of dialogue should I write with this? Write an example of a very brief dialogue between at least 2 people who are talking about a recent event. The characters should be about your age(15).

    asked by Andrea
  99. math

    In 2007, 19.6 percent of a certain country's children were living in poverty. If there were 72.8 million children, what number were living in poverty? Express the amount as a whole number.

    asked by TAYLOR
  100. what is the answer

    An object 8.1 feet tall casts a shadow that is 24.3 feet long. How long in feet would the shadow be for an object which is 20.1 feet tall?

    asked by Anonymous
  101. algebra

    Let U= 1,2,3,4,5,6,7,8,9,10 {12345 n 34567 Thank you

    asked by Mary
  102. Economics

    Why is the south african government is not providing enough welfare on subsidies to the poor and underpriviledged?

    asked by Prince
  103. math

    Your optimal exercise heart rate for cardiovascular benefits is calculated as follows: Subtract your age from 220 and then find 80% of the difference. Find the optimal heart rate for a 40-year-old and for a 10-year-old. Rounded to the nearest whole number,

    asked by taylor
  104. statistics

    A researcher was interested in assessing the effectiveness of the Statistics Diet as compared to a regular low calorie diet on weight loss. In the study, obese participants were randomly assigned to one of two groups: (1) the Statistics Diet, which

    asked by Matt
  105. Spanish Proofreading

    I haven't been able to meet with my Spanish professor to go over my short composition (it basically had to be a past narration using only the preterite and imperfect). If any Spanish speakers wouldn't mind reading it and letting me know what I need to

    asked by Jamie
  106. statistics

    It is known that the population mean for the Quantitative section of the GRE is 500, with a standard deviation of 100. In 2006, a sample of 400 students taking the GRE, whose family income was between $70,000 and $80,000, had a quantitative GRE score of

    asked by Sue
  107. statistics

    A researcher is interested in whether herbal remedies are effective in relieving allergies, and if so, which ones are most effective. The researcher takes a group of 20 allergy sufferers and randomly assigns each one to receive herbal tea, a homeopathic

    asked by Sue
  108. Chemistry

    Long question but its my last one for homework and im stuck on this word problem. Biomass is represented by the empirical formula C60H87O23N12P. Write a balance equation for the oxidation of C60H87O23N12P with O2 to form CO2, H2O, HNO3, and H3PO4 beginning

    asked by Samantha
  109. math

    Four similar glass tumblers just fit into a cubical box.The area of the top of the circular cover of any one of the tumblers is 4 pi.The area of each side of the box is a. 16 b. 32 c. 32 pi d. 64 e. 64 pi please answer and explain

    asked by thomas
  110. What animals eat

    1. What does a hippopotamus(hippo) eat 2. What does a koala eat 3. What does a monkey eat 4. What does a leopard eat CHOICES 1.gum leaves 2.fruit, nectar 3.antelope 4.grass Thanks!

    asked by dddd47906
  111. Science

    4. To identify the genotype of yellow-seeded pea plants as either homozygous dominant (YY) or heterozygous (Yy), you could do a test cross with plants of genotype ________. (explain your answer) Do we do a punnet square?

    asked by Anonymous
  112. Astronomy

    Imagine you are in a spaceship one million km from a black hole of mass kg. Initially you are flying directly away from it at a velocity of 16.9 km/s. Using the n-body approximation, what is your velocity one second later? Type your answer in metres per

    asked by qwerty
  113. math

    Which line would have the steepest slope? regular apples y = $2.00 organic apples y = $2.50 pears y = $2.75 my answer is pears

    asked by steve
  114. Maths

    13. The pet shop owner told Jean to fill her new fish tank 3/4 full with water. Jean filled it 9/12 full. What fraction of the tank does Jean still need to fill?

    asked by Anonymous
  115. Math

    10/2-1/4=

    asked by Anonymous
  116. CHEMISTRY

    The enthalpy of solution of nitrous oxide (N2O) in water is -12 kJ/mol and its solubility at 20 oC and 1.00 atm is 0.121 g per 100. g of water. Calculate the molal solubility of nitrous oxide in water at 1.600 atm and 20 oC. Hint, first find Henry's law

    asked by Raoul
  117. Spanish Proofreading

    I haven't been able to meet with my Spanish professor to go over my short composition (it basically had to be a past narration using only the preterite and imperfect). If any Spanish speakers wouldn't mind reading it and letting me know what I need to

    asked by Jamie
  118. MATH ✿╣Check╠✿

    which expression would you use to figure out the number of ways you can arrange the letter in the word EQUATION?--------------My answer: 8P4 (the 8 and 4 are suppose to be small)

    asked by luna
  119. Math

    Claire wants to determine how brightly to illuminate her stage. stage width (in metres) x stage length (in metres) x 0.14 = total watts for stage If her stage is 7.25 metros wide and 11.5 metres long, a) calculate the exact number of watts needid to

    asked by Lucas
  120. engineering

    Hello guys.I got a homework and seem like I am stocked. a)What type of experiments should be done to find the relationship between the strength of concrete and water/cement ratio. b)what will be the range of the water/cement ratio? It would be great if you

    asked by Elena
  121. Math

    A box containing 20 yellow balls, 9 red balls and 6 blue balls. If the balls are selected at random, what is the smallest number of balls that need to be selected so you will select at least two balls of each colour

    asked by Baby girl
  122. Physics question

    Does the crest of a wave usually have a larger amplitude than the trough?

    asked by Liz
  123. physics

    what is the magnitude and the direction of an electric field when an electron is accelrated vertically upward at a distance of 5.5 metres in 3 micro seconds?

    asked by Anonymous
  124. physics

    If an archaeologist finds an ancient fire pit containing partially consumed firewood and the 14C content of the wood is only 10% of an equal carbon sample from present day tree, what is the age of ancient site. 14 C has half life of 5730 years

    asked by Dave
  125. math

    A truck has 5.9L engine in it. 5.9L of the overall displacement in 6 cylinders each 102mm bore (diameter) and 120mm stroke (length). Engine operates at 16.3:1 compression ratio and with 6psi (0.41atm) of boost cruising at 1600rpm. What is the volume of ONE

    asked by Greg
  126. chemistry

    Calculate the theoretical volume of gas you would expect to be evolved from your experiment if X moles of magnesium were reacted with an excess of HCl at standard conditions (STP).

    asked by Anonymous
  127. math

    If feet is on e and turns to a how many degrees did she turn

    asked by maram
  128. Economics

    What are consumer subsidies?

    asked by Siyasanga dubula
  129. physics

    Sunlight strikes the surface of a lake at an angle of incidence of 44.5°. At what angle with respect to the normal would a fish see the Sun?

    asked by ryan
  130. English

    What does aberration mean?

    asked by Shazia
  131. Statistics

    I am a big shot research scientist at Washington University where I am using 2ebrafish to study neuronal migration. My graduate students measured 40 fish and found that the mean length of the fish sampled was 3.7 cm with a standard deviation of 0.5 cm.

    asked by Linda
  132. math urgent please

    Petr has a cylindrical block of wood od diameter 6 cm and height 18 cm. He glues the base to a board, but wants to paint the rest of the block. He wants to paint the bottom half of the wood black and the top half white. a) Calculate the surface area of the

    asked by Lucas
  133. Statistics

    In a study of 200 students, 42 were found to have a GPA greater than 3.0. Find a 98% confidence interval estimate of the proportion, p, of all students that have a GPA greater than 3.0.

    asked by Jason
  134. ???

    What is Internet and how does it work?

    asked by dddd47906
  135. Math

    a rope is cut in too two piece the shorter piece is 18 feet long and the longer piece is twice as long how long was the rope before it was cut

    asked by Janella
  136. MATH

    Abe can mow the lawn in 15 minutes. Ben can mow the lawn in 20 minutes.Carl can mow the lawn in 30 minutes.They work together for 5 minutes.What part of the lawn was mowed? a. 1/4 b. 2/3 c. 3/4 d. 4/5 e. all of it please answer and explain

    asked by thomas
  137. math

    A metal cube with an edge of one foot is melted into a rectangular solid one-eighth of a foot in height. What is the area of the top of the new solid? a. 1/64 sq.ft b. 1/8 sq.ft c. 1/4 sq.ft d. 4 sq.ft e. 8 sq.ft please answer and explain

    asked by thomas
  138. home economics

    Cost and concequences of providing welfare

    asked by Anonymous
  139. math

    What is 435/2?

    asked by nasia
  140. Trignometry

    A calculator is broken so that the only keys that still work are the \sin, \cos, \tan, \cot, \sin^{-1}, \cos^{-1}, and \tan^{-1} buttons. The display initially shows 0. In this problem, we will prove that given any positive rational number q, show that

    asked by Sonia
  141. Science

    GCSE Physics-Forces affecting falling objects. My falling object is a skydiver Can you please help me to find the information needed? Nothing too complicated please. Here is a list of things I need to include but I have no idea where this information can

    asked by Hanna
  142. Precalculus

    Solve for x given the interval of [0,2pi). cos^2x=2+2sinx I got (3pi)/2 or 270 degrees.. By the way, does the notation [0,2pi) mean 0

    asked by Anonymous
  143. algebra

    7/ square root of p

    asked by joe
  144. Math

    What is the function rule for the following? Rex paid $20 for a membership to the pool and pays $3.00 each time he goes to the pool. My answer is y = x + $20

    asked by steve
  145. chemistry

    The pH of a 0.00100 M solution of a particular acid is 4.95 at 25°C. Use the solution pH to calculate the concentration of hydronium ion present [H3O+]

    asked by sarah
  146. english

    I need help with some conversation examples! 1) Write an example of a conversation between at least 2 adults who are talking about the possibility of one of them getting a new promotion with their current company. 2) Write an example of a very brief

    asked by Andrea
  147. Math

    Solve the following equation. y = 6 - x and y = x - 2

    asked by steve
  148. physics

    Sunlight strikes the surface of a lake at an angle of incidence of 44.5°. At what angle with respect to the normal would a fish see the Sun?

    asked by ryan
  149. physics

    A diamond in air is illuminated with white light. On one particular facet, the angle of incidence is 46.05°. Inside the diamond, red light (ë = 660.00 nm in vacuum) is refracted at 17.38° with respect to the normal; blue light (ë = 470.00 nm in vacuum)

    asked by ryan
  150. Algebra

    Divide. (–6m^9 – 6m^8 – 16m^6) ÷ (2m^3) • –3m9 – 3m8 – 8m6 • –3m6 – 6m8 – 16m3 • –3m6 – 3m5 – 8m3 • –3m6 – 3m5 – 16m3

    asked by Sandra
  151. MATH

    The daily low temperatures during one week were reordered as follows: 2 degrees F, -7 degrees F, 6 degrees F, -3 degrees F, -14 degrees F, -16 degrees F, and -10 degrees F. Explain how you would show a child how to find the average daily low temperature

    asked by Monica
  152. math

    The Crabby Apple restaurant lost $2000 in the month of January. If their net worth at the end of the month is -$200, explain how you would show a child how to find their net worth at the beginning of the month.

    asked by Monica
  153. math

    The Crabby Apple restaurant lost $2000 in the month of January. If their net worth at the end of the month is -$200. What was the net worth at the beginning of the month?

    asked by monica
  154. Chemistry

    H2 (g) + I2 (g) 2 HI (g) If the initial concentrations of H2 and I2 are 1.0 M and the initial concentration of HI is 0.5 M (Kc = 54.3 at 430oC). (a) Is the reaction at equilibrium? (b) If not, which way will the reaction proceed?

    asked by Troy
  155. math

    find fifteen different fractions between 1/4 and 1/2

    asked by jenna
  156. Astronomy Question about Neutrinos

    I can't seem to figure this out, I know that neutrinos have nonzero mass but I don't know how that can help me figure this out The mass of a neutrino is zero. equal to the mass of a proton. equal to the mass of an electron. less than the mass of an

    asked by Kaitlyn
  157. math mrs. sue HELP!!!

    how do u find the mean absolute deviation and what are the steps too!!

    asked by rian
  158. Algebra 2

    Game Theory: Consider a game in which each of two people simultaneously chooses an integer: 1 or 2. Find the expected value for player A and the expected value for player B. Is each game fair. Question: If the numbers are the same, then player A wins 1

    asked by Jackie
  159. Physics

    A hiker throws a rock with a mass of 1.4kg from a cliff that is 37 m above the ground . The hiker gives the rock an initial downward velocity of 8.5 m/s. a) What is the energy of the rock at the moment the hiker releases it? b) What is the velocity of the

    asked by cee
  160. physics

    A 0.25 kg{\rm kg} object is suspended on a light spring of spring constant 35N/mN/m . The spring is then compressed to a position 17cmcm above the stretched equilibrium position.How much more energy does the system have at the compressed position than at

    asked by Spaceman
  161. math

    how do u find the mean absolute deviation of a set of data and please show me how

    asked by rian
  162. math

    Let say that Amy made 8 out of 21 free throws and Jane made 4 out of 21 free throws. Who had the better rate of success? Round your answer to the nearest percent.

    asked by mike
  163. Science

    Explain what happens when a skydiver reaches terminal velocity? thank you...your help is very much appreciated!!

    asked by Anonymous
  164. MAT 116

    If a > 0 and b < 0, then which of the following must be true

    asked by Dee
  165. Geometry

    Please help me 1.The surface are of the exterior of hollow rubber ball is 16pi in^2.The rubber is 1/4 inch thick. Find the surface are of the interior of the ball. 2. The length of each side of a cube is 6 inches long. Find the exact area of a sphere

    asked by Emma
  166. Ethics in Criminal Justice

    In contrast to Bentham, John Stuart Mill argued that happiness or pleasure should be understood: A. quantitatively B. qualitatively C. as the same for all people D. as the absence of pain only I am stuck between A and B, but leaning toward B.

    asked by Pat
  167. math

    a car traveled 91 miles in 3 1/4 hours. What is the cars average speed in miles per hour?

    asked by donny
  168. math

    Two mechanical shafts are joined together at their ends. Together, their total length is 17 2/9 ft. If one shaft is 7 5/9 ft long. How long must the other shaft be?

    asked by donny
  169. math

    does anybody know how to find the mean absolute deviation and the steps

    asked by Anonymous
  170. math

    What is the area of a rectangle that has a length of 3 1/5 miles and a width of 5 1/2 miles?

    asked by yogi
  171. physics

    A metal ball of mass 1.8 kg with initial temperature of 46.5 C is dropped into a container of 3 kg of water at 15 C. If the final temperature is 22.6 C, what is the specific heat of the metal? metal = ____ J/kg*C?

    asked by john
  172. physics

    10 kg of ice at -4 C is dropped into 15.1 kg of water at 36 C. What is the final temperature of the mixture? T_final =

    asked by Joe
  173. physics

    A metal ball of mass 1.8 kg with initial temperature of 46.5 C is dropped into a container of 3 kg of water at 15 C. If the final temperature is 22.6 C, what is the specific heat of the metal? c_metal =____ J*kg*C?

    asked by Joseph
  174. Sciene

    Is meiosis actually mitosis happening twice? Why might some people say this?

    asked by Susan
  175. math

    Emily has 25 rows in her vegetable garden with 19 vegetables in each row. Her mom added 20 more vegetables in the garden. How many vegetables does she have in the garden now?

    asked by Shazia
  176. Science

    GCSE Physics-Forces affecting falling objects. My falling object is a skydiver Can you please help me to find the information needed? Nothing too complicated please. Here is a list of things I need to include but I have no idea where this information can

    asked by Anonymous
  177. Algebra 2

    sketch a graph for f(x)=2(1/2)^x +1

    asked by kathy
  178. physics

    A 1,500 kg car starts from rest and accelerates to a speed of 12 m/s over a distance of 68 m a) calculate the total work on the car b) calculate the net force that caused the car to accelerate (constant force)

    asked by cee
  179. English

    I have to write a 1000 word essay on connecting, Hamlet's dealing with rejection, depression to THE real world life. How it affect's me. So can you help me with some dot jots on how depression can relate tothe world (peoples situations) from hamlet?

    asked by Nicolas
  180. Science

    What are some ethical issues behind cloning? I already said that some people think cloning is like "Playing God".

    asked by Susan
  181. French

    I need help revising my french composition. Here is the prompt and my response: Si tu pouvais voyager n’importe où irais-tu? Avec qui? Qu’est-ce que vous y feriez? Attention: tu vas avoir besoin de savoir quelle préposition va avec le pays, ville, ou

    asked by Collin
  182. math

    he sum of three consecutive integers is 111. What are the integers? (Enter your answers as a comma-separated list.)

    asked by Anonymous
  183. business&technical english

    language is used to make comparisons in business communication

    asked by zobuia
  184. Accounting

    NOTE: I NEED HELP WITH THESE 10 QUESTIONS,IT IS AN EMERGENCY PLEASE! Use the following information to answer questions 1-4. The Bayside Company uses the LIFO cost flow method to value inventory. In the current year, profit at Bayside is running unusually

    asked by Mia
  185. probability

    two cards are drawn in succession without replacement from a standard deck of 52 cards. what is the probability that the first card is a spade given that the second card is a club. what is the probability that the first card is a face card(jack, queen,

    asked by Daren
  186. chemistry

    We calculated that 30.0 grams of ice initially at -10.0 Celsius and it requires 23.1 kj of energy to bring it all the way to a boil. How much additional energy does it take to convert all of the water to steam at 100 degree Celsius? How does this compare

    asked by mai
  187. business&technical english

    -------- means looking at a written message critically to see if revising the content will improve it.

    asked by zobuia