Most popular questions and responses by Ed
  1. Math 2

    Rui is a professional deep water free diver. His altitude (in meters relative to sea level), xxx seconds after diving, is modeled by: d(x)=1/2x^2 -10x What is the lowest altitude Rui will reach? I actually don't understand this problem if its asking for

    asked on September 18, 2017
  2. Math 2

    The rectangle below has an area of 30k^3+6k^2 The width of the rectangle (in meters) is equal to the greatest common monomial factor of 30k^3 and 6k^2 What is the width and length of the rectangle? Width:6k^2 Length: I couldn't find the length I need to be

    asked on September 10, 2017
  3. Science

    Please help me with these questions from the Science 6: Forces and Motions Unit Test. My answer-****** 1. Which of the following best describes the movement of an object at rest if no outside forces act on it? (1 point) It will move due to inertia. Gravity

    asked on May 21, 2018
  4. Phyiosics

    Three point charges lie in a straight line along the y-axis. A charge of q1 = -9.50 µC is at y = 6.30 m, and a charge of q2 = -7.20 µC is at y = -4.00 m. The net electric force on the third point charge is zero. Where is this charge located? y = m

    asked on December 19, 2010
  5. Definition

    In which sentence is the word SPUTTERS used correctly? a.The engine SPUTTERS when it is started in the cold. b.The ball SPUTTERS as it bounces across the court. c.That tree SPUTTERS when it drops its leaves. d.The wave SPUTTERS as it breaks over the beach

    asked on February 2, 2016
  6. Physics

    Ted Williams hits a baseball with an initial velocity of 120 miles per hour (176 ft/s) at an angle of θ = 35 degrees to the horizontal. The ball is struck 3 feet above home plate. You watch as the ball goes over the outfield wall 420 feet away and lands

    asked on January 18, 2013
  7. Physics

    The sun is 30 ∘ above the horizon. It makes a 54 m -long shadow of a tall tree.

    asked on September 8, 2016
  8. Math

    A die is rolled twice. What is the probability that the sum of the rolls is less than 4 given that one of the rolls is a 1? The answer is 3/11. Could someone tell me how to get this. Thanks?

    asked on May 7, 2011
  9. probability

    Marie distributes toys for toddlers. She makes visits to households and gives away one toy only on visits for which the door is answered and a toddler is in residence. On any visit, the probability of the door being answered is 3/4, and the probability

    asked on November 28, 2018
  10. Bible Fill In The Blank

    1. God can use suffering to cause us to ? spiritually and to bring ? to Himself. I Think the first one is "grow". I'm not sure about the other one. I'm Not Sure For Numbers 2-4 (Below). Please Help Me! 2. Ethical, doctrinal, numerical, and factual

    asked on January 11, 2010
  11. probability

    A factory produces copper wires. A blue mark is placed on a very long length of copper. The wire is then cut into pieces. The lengths of different pieces are independent, and the length of each piece is distributed according to the same PDF fX(x). Let R be

    asked on November 28, 2018
  12. physics

    Two friends are sitting in a stationary canoe. At the person at the front tosses a sack to theperson in the rear, who catches the sack 2 later. Which plot in the figure shows thevelocity of the boat as a function of time? Positive velocity isforward,

    asked on February 9, 2011
  13. physics

    At a circus, a human cannonball is shot from a cannon at 15m/s at an angle of 40 degrees from horizontal. She leaves the cannon 1m off the ground and lands on the way down in a net 2m off the ground. Determine her horizontal displacement.

    asked on February 13, 2012
  14. history

    Heather bought a ten-year maturity corporate bond when it was issued for $1,000. The bond has an annual interest rate of seven percent and pays interest semi-annually. How much does she receive every six months?

    asked on November 4, 2010
  15. Physics

    What minimum coefficient of friction between the tires and the road will allow a 3700 kg truck to navigate an unbanked curve of radius 25 m at a speed of 45 km/h? My answer: Fnet=ma Ff=m(v2)/r) Ff=(3700)(452/25) Ff=(3700)(2025/25) Ff=(3700)(81) Ff=299700

    asked on November 19, 2010
  16. basic electronics

    What would happen if the two pith balls shown in Figure A-1 were held together for a few moments, then released? A. The charge would leak off and the pith balls would hang straight down. B. The pith balls would each receive a negative charge and they would

    asked on January 16, 2014
  17. Chemistry

    Could some please tell me if I did this problem correctly? Assume that at a given temperature, there is 1 g of CO2 gas in a one liter volume. How much mass of O2 would there be at the same temperature, in the same volume? My answer: Step 1) Find the number

    asked on October 22, 2009
  18. Economics

    1)The director of marketing at Vanguard Corporation believes the sales of the company’s Bright Side Laundry detergent (S) are related to Vanguard’s own advertising expenditure (A), as well as the combined advertising expenditures of its three biggest

    asked on June 4, 2007
  19. Economics

    I think I get this but could use some guidance to make sure, I am having problems with 2e). 1)In an article about the financial problems of USA Today, Newsweek, reported that the paper was losing about $20 million a year. A Wall Street analyst said that

    asked on June 19, 2007
  20. physics

    A football kicker lines up to kick a game winning kick. The goalpost is 30m away and the ball must clear the 3.3m high cross-bar. If the kick leaves his foot at an angle of 35 degrees, how fast must the kick be to clear the bar?

    asked on February 13, 2012
  21. chemistry

    How much hydrogen gas (H2) forms when 54 g of aluminum reacts with excess HCI ?

    asked on April 16, 2011
  22. Electrical theory

    a series RL circuit contains two resistors and two inductors. the resistors are 33 ohms and 47 ohms. inductors have inductive reactances of 60 ohms and 30 ohms. the applied voltage is 120 volts. what is the voltage drop on the 33 ohm resistor?

    asked on October 28, 2015
  23. physics

    A person jumps off a diving board 4.3 above the water's surface into a deep pool. The person's downward motion stops 2.1 below the surface of the water.

    asked on September 7, 2011
  24. physics

    A 89.0 N grocery cart is pushed 13.0 m along an aisle by a shopper who exerts a constant horizontal force of 40.0 N. If all frictional forces are neglected and the cart starts from rest, what is the grocery cart's final speed?

    asked on October 19, 2010
  25. math

    I have three packages whose total weight is 60 kg. If the two heaviest packages weigh 50 kg together, and the two lightest weigh 25 kg together, what is the weight, in kg, of the heaviest package?

    asked on January 25, 2010
  26. Economics/Marginal Analysis

    21st Century Electronics has discovered a theft problem at its warehouse and has decided to hire security guards. The firm wants to hire the optimal number of guards. The follwoign table shows how the number of security guards affects the number of radios

    asked on June 1, 2007
  27. Managerial Econ 2

    1)The chief economist for Argus Corporation, a large appliance mfg., estimated the firm’s short-run cost function for vacuum cleaners using an average variable cost function of the form: 3 AVC = a + bQ + cQ Where AVC = dollars per vacuum cleaner and Q =

    asked on July 19, 2007
  28. Maths

    a circus artist drops a ball from a high wire. The ball takes 1.5 seconds to reach the ground. (i) Find the height of the high wire above the ground (ii) write an expression for the speed of the ball t seconds after it's dropped where 0

    asked on November 17, 2016
  29. chemistry

    How many moles of solute are contained in a 150ml solution of a 0.25 M NaNO3 solution?

    asked on November 4, 2010
  30. Physics

    A bicycle is turned upside down while its owner repairs a flat tire. A friend spins the other wheel and observes that drops of water fly off tangentially from point A. She measures the heights reached by drops moving vertically (see figure). A drop that

    asked on November 30, 2009
  31. Calculus

    Two forces of equal magnitude act to 60 degrees. If their resultant has a magnitude of 30N, find the magnitude of the equal forces.

    asked on February 11, 2012
  32. Physics

    A Silver bowl has a mass of 1.78kg. It is shaped like a cylinder and has a diameter of 35.0 cm and a height of 8.00cm. It is placed in water. Find (a)the volume of water it displaces, (b) The buoyant force exerted on it by the water, and(c)how deeply it

    asked on November 6, 2011
  33. physical science

    you are riding in a car traveling at 60mi/hr in a 50 mi/hr zone. you spot a policeman 10 feet ahead. you slow down with an acceleration of -2ft/sec2 for 3 seconds. Do you get a ticket

    asked on June 14, 2016
  34. 6 grade math

    wile catching fireflies, you and your friend decide to have a competition. after m minutes, you have (3m +13) fireflies and your friend has (4m+6) fireflies. a. how many fireflies are caught per minute? b. ow many fireflies caught before the competition?

    asked on October 21, 2017
  35. statistics

    A researcher is testing the effect of a new cold and flu medication on mental alertness. A sample of n=9 college students is obtained and each student is given the normal dose of the medicine. Thirty minutes later, each students performance is measured on

    asked on April 29, 2014
  36. Physics

    In an accidental explosion, a satellite breaks in half while in circular orbit about earth. One half is brought momentarily to rest. What is the fate of the half brought to rest? What happens to the other half?

    asked on October 20, 2010
  37. physics

    A skier of mass 75.0 kg is pulled up a slope by a motor-driven cable. How much work is required to pull the skier 60.0 m up a 35° slope (assumed to be frictionless) at a constant speed of 2.0 m/s?

    asked on October 19, 2010
  38. math

    1.binomial 2.degree of monomial 3.monomial 4.perfect-square trinomial 5.standard form of polynomial A.a polynomial with two terms B.a polynomial in which the terms decrease in degree from left to right and there are no like terms C.a polynomial whith two

    asked on May 12, 2010
  39. Economics Help!

    4) The manager of Collins Import Autos believes that the number of cars sold in a day (Q) depends on two factor: (1) the number of hours the dealership is open (H) and (2) the number of salespersons working that day (S). After collecting the data for two

    asked on June 4, 2007
  40. Physics

    A certain p-channel JFET has a VGS(off) = +6V. What is ID when VGS = +8V?

    asked on March 9, 2012
  41. Physics

    A car initially traveling at 33.4 m/s undergoes a constant negative acceleration of magnitude 1.80 m/s2 after its brakes are applied. (a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the tires

    asked on November 28, 2009
  42. Physics

    A car initially traveling at 33.4 m/s undergoes a constant negative acceleration of magnitude 1.80 m/s2 after its brakes are applied. (a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the tires

    asked on November 28, 2009
  43. Help from The Economyst

    I have put together my set of questions that I posted and answered them with yor help and direction, would you mind looking at the finished product for correctness. I still got lost on some of it I think. I could send them to you. EY Post them. We do not

    asked on June 10, 2007
  44. Math

    What is the probability oi rolling a total of 7 in two rolls of a standard die if you get an even number of the first roll? Could someone please help me? Thanks

    asked on May 8, 2011
  45. math

    a dog starts chasing a cat when they are 12 meters. for every 7 meters that the dog runs, the cat runs 4 meters. how far does the dog have to run to catch up with the cat?

    asked on May 22, 2014
  46. Managerial Econmics

    Q4: Ch 5 (10%) In terms of the consumer theory set forth in this chapter, can you explain the meaning of the following statements? a. “I think you get more for your money from Nike than from Reebok.” b. “I wanted to buy a Boxster rather than a

    asked on October 10, 2010
  47. Pre-Algebra

    You have $60 in your wallet and want to buy some new CDs. If the CDs are $11 each, what number of CDs, x, can you buy? Write and solve an inequality. Then explain your answer.

    asked on January 16, 2014
  48. physics

    Initially, a particle is moving at 5.30 m/s at an angle of 35.0° above the horizontal (+x axis). Two seconds later, its velocity is 5.97 m/s at an angle of 50.0° below the horizontal. What was the particle's average acceleration during this time

    asked on November 10, 2012
  49. AP Physics

    A flywheel turns through 46 rev as it slows from an angular speed of 3.1 rad/s to a stop. Assuming a constant angular acceleration, find the time for it to come to rest? What is its angular acceleration (in rad/s^2) ? How much time is required for it to

    asked on January 27, 2008
  50. University physics

    "A droplet of oil carries an extra charge of one electron and is held motionless between parallel plates separated by 1.80 cm across which there is a potential difference of 55.5 kV. What is the mass of the droplet?" I assumed that this whole thing was

    asked on February 10, 2016
  51. Can some one check my finance answers please

    Which of the following best states the difference between seed capital and startup capital? Seed capital is for research and planning while startup capital is for operating expenses. Seed capital is provided by venture capitalists while startup capital is

    asked on November 12, 2014
  52. math

    2 airplanes start at the same time from airports 500 km apart. Each flies with an airspeed of 200 km/hr toward the other airport. One reaches its airport half an hour before the other plane reaches the other airport. How fast is the wind blowing?

    asked on February 16, 2012
  53. Algebra

    Using the function f(X)=-3X+1 find f(2M+5)

    asked on January 8, 2019
  54. Finance

    Which of the following best states the difference between seed capital and startup capital? Seed capital is for research and planning while startup capital is for operating expenses. Seed capital is provided by venture capitalists while startup capital is

    asked on November 12, 2014
  55. Chemistry

    If calcium carbonate) and aluminum silicate are mixed together and heated then the result is cement. Cement is a mixture of calcium oxide, carbon dioxide, aluminum oxide, and calcium silicate. Write the balanced equation for this reaction. My Answer:

    asked on January 28, 2011
  56. Economics, Marginal Utilities

    Help Economyst.... 1) I think I get this one but maybe n not? Bridget has a limited income and comsumes only wine and cheese, her current consumption is four bottles of wine and 10 pounds of cheese. The price of the wine is $10 per bottle and the price of

    asked on June 11, 2007
  57. physics

    A truck driver slams on the brakes and the momentum of the truck changes from ‹ 53000, 0, 0 › kg · m/s to ‹ 27000, 0, 0 › kg · m/s in 3.3 seconds due to a constant force of the road on the wheels of car. As a vector, write the net force exerted

    asked on September 11, 2014
  58. math 7/8 grd

    d+s ˃ -3 d ˃ -7 find s it says the answer is 4 (s=4) but it seems not ok because depending on d the number can be pretty much anything

    asked on November 14, 2017
  59. Managerial Economics

    I'm not sure I have the formulas correct for this problem and I do not know what the labor hours are.... Dimex Company, a sheet-metal mfg., estimates its long run production function is: 3 3 2 2 Q = -0.015625K L + 10K L where Q is the number of body panels

    asked on July 19, 2007
  60. Math 7th gr

    it is about bowling, your final score is 14 less than your friends, did you have a spare in the 10th round? 9th round 10th final friend 8 - 7 / 6 105 89 105 you 6 3 9 82 I don't know bowling, so it is a bit unfair.. the final should be 105-14=91 and since

    asked on August 29, 2018
  61. College Math

    In a group of 200 high school students, 36 are taking biology, 52 are taking Spanish, and 126 are taking neither biology nor Spanish. If one of these 200 students is to be chosen at random, what is the probability that the student chosen is taking biology

    asked on March 19, 2014
  62. physics

    The maximum gauge pressure in a hydraulic lift is 18 atm. What is the largest size vehicle (kg) it can lift if the diameter of the output line is 22 cm?

    asked on November 18, 2013
  63. physics

    Starting at rest at the edge of a swimming pool, a 72.0-kg athlete swims along the surface of the water and reaches a speed of 1.15 m/s by doing the work Wnc1 = +170 J. Find the nonconservative work, Wnc2 done by the water on the athlete.

    asked on November 16, 2011
  64. Econ

    The economy contains 2000 $1 bills. a) If people hold all money as currency, what is the quantity of money? b) If people hold all money as demand deposits and banks maintian 100 % reserves, what is the quantity of money? c) If people hold equal amounts of

    asked on July 12, 2007
  65. math 7/8 grd

    d+s ˃ -3 d˃-7 find s the answer supposed to be 4, but I think it is not correct, because depending on d it might be pretty much anything.. any thoughts?

    asked on November 14, 2017
  66. social studies

    What's the second most populous continent? Please check this site. Asia is the most populous. Which is the second most populous -- with 885 million people? http://www.nationsonline.org/oneworld/world_population.htm customs passed from parent to child is ?

    asked on March 28, 2007
  67. algebra

    Miranda worked two part-time jobs last week. The first job paid $8 an hour, and the second job paid $11 an hour. She worked a total of 23 hours last week and earned $208. How many hours did Miranda work at the first job?

    asked on July 17, 2017
  68. Calculus

    Solve the following equation on the interval [0,2pi) if sin = -0.29?

    asked on August 21, 2016
  69. 4th grade math

    there are 4 possible scoring plays in an NFL football game (T) touch down -6 points (A) point after touchdown can only be earn with a touch down) - 1 point (F) field goal - 3 points (S) safety - 2 points 1. how many different ways could the team score 11

    asked on November 9, 2015
  70. math

    If two dice are rolled one time, find the probability of getting a sum less than 5.

    asked on November 17, 2012
  71. algebra

    Delaney needs to rent a car while on vacation. The rental company charges $17.95, plus 16 cents for each mile driven. If Delaney only has $50 to spend on the car rental, what is the maximum number of miles she can drive?

    asked on March 11, 2017
  72. Maths

    A ball is thrown vertically upwards at 3 m s-1 from 1m above ground level (I) write down the equation for the height of the ball above the ground after t seconds (while the ball is in the air). (II) use your answer to find the time it takes the ball to

    asked on November 17, 2016
  73. World history

    Who benefited the least from the development of feudal systems? Explain why Japan China Africa Europe

    asked on November 9, 2015
  74. physics

    A room has the dimensions 3.0 m by 4.0 m by 4.0 m . The air in the room is 79% N2( MW= 28) and 21% O2 (MW = 32). At a temperature of 20 degrees Celsius and pressure of 115 kPa , what is the mass of the air in the room in kilograms?

    asked on November 28, 2011
  75. Managerial Economics

    2)The manager of All City realtors wants to hire some real estate agents to specialize in selling housing units acquired by the Resolution Trust Commission (RTC) in its attempt to bail out the savings and loan industry. The commission paid by RTC to the

    asked on July 26, 2007
  76. Expansion Path Economics

    I've been trying to find a solution to this without much success. I am given the following....The production engineers at Impact Industries have derived the expansion path shown in the following figure. The price of labor is $100 per unit. There is a graph

    asked on July 14, 2007
  77. Mangerial Economics

    I am having problems figuring out how to set this problem up. Gamma Corporation, one of the firms that retains you as a financial analyst, is considering buying out Beta Corporation, a small manufacturing firm that is now barely operating at a profit. You

    asked on July 4, 2007
  78. math 7 grd

    you have to design a space station (model) that has a 120 cm3 volume, and it has to have the possible smallest surface area. it must contain 3 different shapes. (cone and sphere surface are was not covered, only their volume, so they are out....we can

    asked on April 19, 2018
  79. Chemistry

    Methyl amine is a weak base with a pKb=3.35. Consider the titration of 30.0mL of .030M of Methyl amine with 0.025M HCl. a) Write the appropriate equation for the reaction. b) Calculate K for the reaction in part (a). c) Calculate pH of the initial methyl

    asked on April 27, 2016
  80. World history

    Who benefitted the least from the development of feudal system? Explain why Japan China Africa Europe

    asked on November 9, 2015
  81. math

    A random group of seniors was selected from a university and asked about their plans for the following year. The school advising office claims that 60% of the students plan to work, 30% of the students plan to continue in school, and 10% of the students

    asked on December 16, 2012
  82. History

    During the period of the Crusades, warfare between Christians and Muslims lasted nearly ? years 50 300 200 100

    asked on November 16, 2009
  83. Managerial econ 1

    1)The Midnight hour, a local nightclub, earned $100,000 in accounting profit last year. This year the owner, who had invested $ 1 million in the club, decided to close the club. What can you say about economic profit (and the rate of return)in the

    asked on July 24, 2007
  84. math

    Are the following statements and valid null and alternative hypotheses? (

    asked on December 1, 2012
  85. chemistry

    the volume of a gas was originally 2.5 L; it's pressurewas 104kpa and its temperatire was 270K. the volume of the gas expanded to 5.3 L and its pressure decreased to 95 kpa. What is the temperature of the gas?

    asked on May 8, 2012
  86. Math

    How to factor x^3 - 3x^2 + 4 =0 Use D'Alembert's Rational Roots Theorem. Any rational roots of the form of p/q (p and q assumed to be relatively prime) must be such that p divides the constant term (in this case 4) and q divides the coefficient of the

    asked on July 14, 2007
  87. math

    A brownie cake recipe requires 2 1/2 cup of sugar. The amount of flour needed is 1/2 cup more than twice the amount of sugar. How much flour is required?

    asked on May 14, 2015
  88. Physical Science

    Predict the shift of equilibrium for each of the following conditions in the following reaction involving gaseous reactants and products: N2 + 3H2 = 2NH3 + heat A. the pressure is increased. b. the temperature is decreased.

    asked on February 8, 2013
  89. Physical Science

    Predict the shift of equilibrium for each of the following conditions in the following reaction involving gaseous reactants and products: N2 + 3H2 = 2NH3 + heat

    asked on February 8, 2013
  90. Calc

    definite integral from 0 to 1 of 5xln(x+1)dx

    asked on November 8, 2011
  91. physics

    The earth orbits the sun once every 365.24 days. The distance between the earth and sun is 1.49x 10^8 Km. The mass of the earth is 5.96 x 10 ^24 kg. A) Find the magnitude in newtons of the centripetal force acting on the earth. The mass of mars is 6.56 x

    asked on October 12, 2011
  92. Economics

    Are chickens and and cows examples of capital goods? Capital goods are items used in the creation of other goods. Because chickens create eggs and cows make milk, are they consumer goods?

    asked on February 1, 2011
  93. Math

    Find the quotient function f/g for f(x)=sqr(x+1) and g(x)= sqr( x-1). My Answer: sqr(x+1)/sqr( x-1) sqr(x^2-1)/ (x-1) However, I also have to state the restrictions to the domain and range, which I do not know how to do. Could someone please help me?

    asked on September 23, 2010
  94. History

    Washington's main objective as president of the united states was to: (1) set up a court similar to that of Eurpoean monarchs. (2) establish respect for the office of presidency. (3) keep peace between the northern and southern states. (4) maintain his

    asked on January 6, 2010
  95. Physics

    A 46.5-cm diameter disk rotates with a constant angular acceleration of 2.4 rad/s2. It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.3° with the positive x-axis at this

    asked on November 30, 2009
  96. Managerial Econ 2

    2)The manager of All City realtors wants to hire some real estate agents to specialize in selling housing units acquired by the Resolution Trust Commission (RTC) in its attempt to bail out the savings and loan industry. The commission paid by RTC to the

    asked on July 24, 2007
  97. Algebra

    manuella likes pepperoni, mushroom, and extra cheese on her pizza. how many different pizzas can she order with one, two, or all three of these toppings?

    asked on March 2, 2017
  98. Chemistry

    The gas phase reaction X+Y⇄ Z is first order in Y and second order in X. If the concentration of X is double and concentration of Y is tripled. The reaction rate would be increase by a factor of: then, Rate= k [x]^2[y] --> k[x]^4[y}^3 is this the correct

    asked on June 14, 2016
  99. Math

    Twice the square of a positive number increased by three times the number is 14. Find the number.

    asked on May 12, 2015
  100. PHYSICS

    a 50 kg person running to the east at 8.5 m/s jumps into a 100 kg initially at rest. A)find the velocity of the wagon and person together as they move away.B) If they coast 30 m before coming to a stop, find the average force of the friction that slows

    asked on October 12, 2011


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