ricky

Most popular questions and responses by ricky
  1. Chemistry

    A 35.1g sample of solid CO2 (dry ice) is added to a container at a temperature of 100k with a volume of 4.0L. If the container is evacuated (all of the gas removed), sealed and then allowed to warm to room temperature (T=298K) so that all of the solid CO2

    asked on January 20, 2018
  2. Algebra

    Scott set up a volleyball net in his backyard. one of the poles, which forms a right angle with the ground, is 6 feet high. To secure the pole, he attached a rope from the top of the pole to a stake 8 feet from the bottom of the pole. To the nearest tenth

    asked on June 11, 2014
  3. Chemistry

    Need help! Calculate the molar concentration of OH- in a 0.724M solution of hypobromite ion (BrO-; kB= 4.0 x 10^-6) what is the pH of this solution? I got as far as kB = [OH-][HBrO]/[BrO-] please help me with the rest.

    asked on April 26, 2018
  4. math

    I have a math question.two fielda ats state park are 1000 meters from each other.on a map,the two fields are 8 centimeters apart.What scale is the map using?is it the metric scale??

    asked on December 11, 2014
  5. Chemistry

    At 298.K and 1.00 atm, assume that 22 mL of NO gas reacts with 18 mL of oxygen gas and excess water to produce nitric acid according to the following equation: 2 NO(g) + 3/2 O2 (g)+ H2O(l)?? 2 HNO3(g). If all of the nitric acid produced by this reaction is

    asked on October 26, 2010
  6. Chemistry

    Magnesium can be used as a “getter” in evacuated enclosures to react with the last traces of oxygen. (the magnesium is usually heated by passing an electric current through a wire or ribbon of the metal) If an enclosures of 0.452L has a partial

    asked on January 21, 2018
  7. physics

    help me please? I'm lost... A small space probe is put into circular orbit about a newly discovered moon of Saturn. The moon's radius is known to be 550km. If the probe orbits at a height of 1500km above the moon's surface and takes 2.0 earth days to make

    asked on December 5, 2017
  8. Physics

    A certain amount of work is required to stretch a spring from its equilibrium position. (a) If twice the work is performed on the spring, the spring will stretch more by a factor of (1)square root of 2 (2)2,(3)1/square root of 2, (4)1/2. Why? (b) If 100J

    asked on October 10, 2017
  9. physics

    A 0.50kg mass is suspended on a spring that stretches 3.0cm. a. What is the spring constant? b. What added mass would stretch the spring an additional 2.0cm? c. What is the change in potential energy when the mass is added?

    asked on November 21, 2017
  10. Chemistry

    If the pressure exerted by ozone, O3, in the stratosphere is 3.0 x 10^-3 atm and the temperature is 250K, how many ozone molecules are in a liter? Please help me.

    asked on January 23, 2018
  11. Physics

    1. A horse is harnessed to a sled having a mass of 231 kg, including supplies. The horse must exert a force exceeding 1250 N at an angle of 36.3° (above the horizontal) in order to get the sled moving. Treat the sled as a point particle. (a)Calculate the

    asked on October 3, 2018
  12. PHysics

    A gun is fired, and a 50gram bullet is accelerated to a muzzle speed of 100m/s. If the length of the gun barrel is 0.90m, what is the magnitude of the accelerating force? Assume the acceleration is constant. Help me please???

    asked on November 16, 2017
  13. physics

    A light string of length of 56.0 cm connects two small square blocks, each with a mass of 1.50 kg. The system is placed on a slippery (frictionless) sheet of horizontal ice and spun so the two blocks rotate uniformly about their common center of mass,

    asked on November 28, 2017
  14. Chemistry

    When 1.00 mol of A and 0.800 mol of B are placed in a 2.00 L container and allowed to come to equilibrium, the resulting mixture is found to be 0.20M in D. What is the value of K at equilibrium?

    asked on April 12, 2018
  15. Physics

    A Ferris Wheel, 24.0 m in diameter, rotates once every 12.5s. What is the fractional change in a person's apparent weight: a) at the top, and b) at the bottom? I need to know if I'm doing this right. Here's my work: Equation Used: Net Force =

    asked on January 20, 2011
  16. Physics

    The switch in the circuit shown in the figure below is closed, and the lightbulb glows steadily. The inductor is a simple air-core solenoid. An iron rod is inserted into the interior of the solenoid, increasing the magnitude of the magnetic field in the

    asked on March 28, 2018
  17. Physics

    A beam of singly ionized carbon atoms (C-12, C-13, and C-14 isotopes) is injected into a mass spectrometer, which isotopes would follow the trajectory of greatest diameter and strike the detection plate furthest? I know the answer is C-14, but why? can

    asked on March 28, 2018
  18. Physics

    two stars with equal mass of 4.0x10^15 kg are separated by a distance of 2 km. They are moving in circular obits around the middle between the two stars. What is the speed of the stars?

    asked on May 10, 2015
  19. Physics

    A transformer is to be used to provide power for a computer disk drive that needs 5.8 V (rms) instead of the 120 V (rms) from the wall outlet. The number of turns in the primary is 414, and it delivers 500 mA (the secondary current) at an output voltage of

    asked on March 22, 2018
  20. chem

    Which has the lowest freezing point?Select one of the options below as your answer: A. pure water B. 0.5 M ionic NaCl C. 0.5 M ionic CaCl2 D. 0.5 M ionic AlCl3 E. 0.5 M molecular C12H22O11

    asked on June 19, 2012
  21. Art Please HELP!

    In addition to skills in creating art, which type of knowledge is important for art therapist to have to successfully perform their jobs? A. Knowledge of Physical Therapy B.Knowledge of Psychology C.Knowledge of teaching Strategies D. Knowledge of Art

    asked on March 24, 2015
  22. physics

    In a high speed chase, a policeman's car bumps a criminal's car directly from behind to get his attention. The policeman's car is moving at 40 m/s to the right and has a total mass of 1800 kg. The criminal's car is initially moving in the same direction at

    asked on October 31, 2017
  23. math

    Jeff bought a refrigerator for $1300. He made a 10% down payment and financed the rest at 6% for one year. How much interest did he pay?

    asked on January 24, 2013
  24. Math

    Completely bemused, do not know how to get the answer. a)8π b)7√2 c)27√π d)7√×7√×1 13- Determine the exact total surface area of a sphere with radius 2√2 metres. a) An inverted cone with side length 4 metres is placed on top of the sphere so

    asked on February 25, 2016
  25. Adv algebra

    The equation x^2+px+q=0, q cannot be equal to 0, has two unequal roots such that the squares of the roots are the same as the two roots. Calculate the product pq.

    asked on October 22, 2011
  26. economics

    An economist for a bicycle company predicts that, other things equal, a rise in consumer incomes will increase the demand for bicycles. This prediction is based on the assumption that:

    asked on January 27, 2012
  27. Physics

    A 0.50kg mass is suspended on a spring that stretches 3.0cm. a. What is the spring constant? b. What added mass would stretch the spring an additional 2.0cm? c. What is the change in potential energy when the mass is added? Conservation of energy is not my

    asked on November 18, 2017
  28. government

    Most presidential caucuses differ from Statewide presidential primaries in all of the following ways EXCEPT the number of States that hold caucuses. ways in which delegates to the national convention are chosen. main purpose for which the delegates are

    asked on December 18, 2008
  29. physics

    A compact disc (CD), initially at rest, reaches an angular speed of 40 rad/s in 5.0 s. a. What is the magnitude of its angular acceleration? b. How many revolutions does the CD make in 5.0 s?

    asked on December 1, 2017
  30. Physics

    With her bare hands and her arms rigidly extended, a girl catches a 0.16kg baseball coming directly at her at speed of 25m/s. She shouts, “Ouch!’ because the ball stings her hands. She learns quickly how to move her hands with the ball as she catches

    asked on November 14, 2017
  31. U.S. History

    Which one of these was not the causes of the Great Depression? excessive income taxes speculative stock purchases risky banking practices severe drought I think it is excessive income taxes or severe drought. But I don't think it is severe drought because

    asked on April 11, 2012
  32. Algebra

    The perimeter of a triangle is 60 cm. The longest side exceeds the shortest one by 10 cm.and the sum of the lengths of the longest and the shortest ones is twice the length of the other side. Find the lengths of the sides.

    asked on May 21, 2017
  33. physics

    help me please? I'm lost... A small space probe is put into circular orbit about a newly discovered moon of Saturn. The moon's radius is known to be 550km. If the probe orbits at a height of 1500km above the moon's surface and takes 2.0 earth days to make

    asked on December 5, 2017
  34. Math 5. Grade

    Trying to figure out how to find the answer. A rectangular has a perimeter of 3600m. What is the width if the length is five times the width? How do I do this.

    asked on February 2, 2015
  35. statistic

    an employment information service reports that the mean annual salary for full time male workers ages 25 to 34 with a bachelor's degree is $48718. in a random sample of 12 full time males workers ages 25 to 34 with a bachelor's degree, the mean annual

    asked on December 5, 2013
  36. Bussiness

    The market for carrots is comprised of two segments: fresh market carrots, which have excellent, uniform color and a small core, and processing carrots, which are larger than fresh market carrots but still have good flavor, color, and sweetness. Annual

    asked on February 24, 2012
  37. economics

    Suppose that the free market labour supply and labour demand equations are given by Qs = 5W and Qd = 30 - 5W. If the minimum wage were set at $2.50 an hour, how many people would not be able to find work?

    asked on January 27, 2012
  38. Physics

    #1.) A wind turbine has a Cp of 0.42 and extracts 50 kW of power when the wind velocity is 25 m/sec. How long are the blades? (ρ = 1.2 kg/m3) #2.) An electric hot water heater is used to heat 30 gallons of water from 20 °C to 45 °C. a. What heat energy

    asked on December 5, 2010
  39. Math

    A local gym charge nonmembers $ 19 per hour to use the tennis courts. Members pay a yearly fee of $300 and $4 per hour for using the tennis courts. Write and solve an equation to find how many hours you must use the tennis courts to justify becoming a

    asked on January 7, 2008
  40. Calc

    Verify that the trigonometric equation is an identity. 1/2 sin 2 x − sin^2x over sinxcos2x = 1 over sinx+cosx Verify that the trigonometric equation is an identity. cotx over 1-sinx =secx(cscx+1) Can someone please Help!!! these are so hard for me to

    asked on April 20, 2017
  41. Chemistry

    How many molecules are in 0.923 mol of selenium tetrabromide?

    asked on December 10, 2014
  42. physics

    A 6.0 Kg object undergoes an acceleration of 2.o m/s squared. what is the magnitude of the net external force acting on it?

    asked on October 5, 2012
  43. Physics

    A dockworker loading crates on a ship finds that a 19-kg crate, initially at rest on a horizontal surface, requires a 70-N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 60 N is required to keep it moving

    asked on October 4, 2011
  44. physics

    A truck is traveling at 19 m/s to the north. The driver of a car, 460 m to the north and traveling south at 26 m/s, puts on the brakes and slows at 3.5 m/s2. Where do they meet?

    asked on September 14, 2011
  45. algebra 2

    is 1.765 a rational or irrational number

    asked on September 4, 2007
  46. meaning

    "before you start pointing fingers.. make sure your hands are clean" i'm having trouble defining this quote or explaining it. can you help me?. i think it means before you judge someone you should make sure your actions aren't worse then theirs. uh, not

    asked on September 28, 2006
  47. Algebra

    The equation x^2+px+q=0, q cannot be equal to 0, has two unequal roots such that the squares of the roots are the same as the two roots. Calculate the product pq. I think the obvious root would be one but the second roots i just can't figure out!

    asked on October 20, 2011
  48. us government

    A person in Michigan applying for a job in Alabama can expect not to be discriminated against because of the ___________ Clause.

    asked on December 6, 2012
  49. science

    How do the atmosphere, lithosphere and hydrosphere interact with each other?

    asked on March 7, 2012
  50. Math

    In a survey of 624 students, 60% more preferred getting news online to getting news on tv. How many students prefer getting news online. I started with the equation 1.6x+x=624, but I don't know if this is the right set up or right idea. Any help is

    asked on January 3, 2012
  51. poetry

    Narrative ,free verse, limerick,acrosstic poems about soccer

    asked on December 3, 2011
  52. math

    3b-9-8b=11

    asked on October 3, 2011
  53. FINANCE

    You are graduating in September and would like to start your own business making wine coolers. You collect the following information on the initial costs: Cost of Plant & Equipment = $500,000 Licensing & Legal Costs = $50,000 You also have been left a tidy

    asked on July 14, 2010
  54. physics

    1. How far (in meters) must a 600 kg pile driver fall, if it is to do 14000 J of work? 2. A spring whose spring constant is 150 N/m is compressed 0.800 m. What speed (in meters/second) can it give to a 0.600 kg ball when released? 3. A 550 N crate rests on

    asked on July 7, 2010
  55. 5th grade

    need the biography ofEmily Hutchinson for my English class.

    asked on September 10, 2008
  56. math

    A bank offers a 24-month installment loan with an APR of 10%. Alicia wishes to use the loan to finance a sailplane for $42,800. After first using Table 13-1 to find the finance charge, calculate the monthly payment.

    asked on May 15, 2018
  57. physics

    n automobile has a vertical radio antenna 1.40 m long. The automobile travels at 30.0 km/h on a horizontal road where Earth's magnetic field is 50.0 µT, directed toward the north and downward at an angle of 65.0° below the horizontal. (a) Specify the

    asked on March 26, 2018
  58. Ellison

    A cylinder that contains methane gas is kept at a temperature of 15°C and exert a pressure of 7atm.If the temperature of the cylinder increases to 25°C,what pressure does the gas now exert?

    asked on March 24, 2017
  59. English

    I am working on writing a paper. We have to use MLA format. I am a little confused on how to site my sources. I wrote the following paragragh: Panama Canal is an international waterway located across the Isthmus Panama. The Canal was built by the United

    asked on January 28, 2015
  60. social studies

    If u travel o degrees latitudes, 0 degrees to 30 degrees north latitude, 120 west longitude u will have travel from

    asked on August 17, 2014
  61. calculus

    Ice cream drips out of the bottom of an ice cream cone on a hot day at a rate of r(t) mL per second, as a child eats it slowly, where t is in seconds. If r(t) = 10 e^{-k t}, complete the definite integral expressing the quantity of ice cream lost in the

    asked on March 8, 2014
  62. calculus

    At a summer campfire, the radius of a marshmallow on a stick expands at the rate of \ {r ' (t)} = \frac{2.1 }{1 t + 5} mm/s where t is the time of heating in seconds. Initially the radius was 3.8 mm. Find the radius after 27 seconds using the following

    asked on March 8, 2014
  63. math

    Twenty years ago Gabe invested $2,000. For the first ten years he earned 13% compounded semi-annually. For the next ten years he earned 8% compounded quarterly. What was the value of the investment now, at the end of the 20 years?

    asked on February 19, 2014
  64. math

    Keisha had two pieces of ribbon of equal length. She cut the first piece of ribbon into 15 equal parts. She also cut the second piece of ribbon into equal parts. Nine parts of the first piece are equal in length to 3 parts of the second piece. Into how

    asked on August 31, 2012
  65. maths

    find the general solution of the following first order differential equation. t*(dy/dt) = (-y/t) + ((exp(1/t)/t^3) could you show steps in working to solution.

    asked on October 26, 2011
  66. writing

    I was wondering if in this paragraph I was going off topic, plz help, maybe give me some pointers? Im not finished with the paragraph but that's what I have so far and need someones opinion... Compassion is like handing a piece of your heart to another

    asked on October 18, 2011
  67. english

    Mikes car needs a new muffler and new brakes. (Which word needs an aposterphy?)

    asked on November 10, 2010
  68. Math

    There are two spinners, one numbered 1-6 and one labeled A & B. Spin them only once. Draw a tree diagram showing the probability of spinning 1,A

    asked on April 23, 2010
  69. math

    improper fractions to its mixed number

    asked on March 17, 2009
  70. Physics

    Vector A, a wind velocity vector, has a magnitude of 20 miles per hour and is blowing toward the North. A second wind velocity vector, Vector B, has a magnitude of 50 miles per hour and is blowing toward the Southeast. A third wind velocity vector, Vector

    asked on October 5, 2017
  71. Algebra

    Given: f(x) = 8-4x A. Find f(-2) f(2) = 8-4(-2) B. Find x, when f(x) = 8 8-4x = 8 C. Graph the function. ( a graph that has 20X and 20Y as the max numbers) D. State the domain and range of the function. (confused on what to do here) E. Use the graph to

    asked on February 26, 2017
  72. math

    18 mm long in kilometers

    asked on June 25, 2015
  73. writing

    I want to know what is wrong in the following sentence: After six months on the job, he faced problems in his first recruitment effort; however, if he solves these problems, the new hires should be able to start working by July.

    asked on February 19, 2012
  74. Math

    In how many different ways may the four officers be seated?

    asked on October 5, 2011
  75. math

    Solve 5 divide by 6 plus 1 divide by10

    asked on May 4, 2011
  76. math

    The atomic number of cadium is half the atomic number of curium. Define a variable and write an expression for the atomic number of cadmium. I'm working in a group with my friends and we need help we're not the same people.

    asked on September 8, 2010
  77. FINANCE

    Answer both questions A).The treasurer of a German firm has €5 million to invest for three months. The annual interest rate in the Germany is 4 percent: the interest rate in the United Kingdom is 2 percent. The spot rate of exchange is €1.1/£ and the

    asked on August 5, 2010
  78. FINANCE

    You are graduating in September and would like to start your own business making wine coolers. You collect the following information on the initial costs: Cost of Plant & Equipment = $500,000 Licensing & Legal Costs = $50,000 You also have been left a tidy

    asked on July 14, 2010
  79. physics

    1. How far (in meters) must a 600 kg pile driver fall, if it is to do 14000 J of work? 2. A spring whose spring constant is 150 N/m is compressed 0.800 m. What speed (in meters/second) can it give to a 0.600 kg ball when released? 3. A 550 N crate rests on

    asked on July 7, 2010
  80. 6th grade

    My problem is... I had a rectangular garden plot area 60 sq. feet. This year it is one foot wider and 3 feet shorter...but has the same area..60 sq. feet. What were the dimensions of the plot last year. I just want to know how to get started on solving

    asked on September 22, 2009
  81. Math

    Solve the equation for Y X-Y=2

    asked on September 11, 2008
  82. math

    yea it sais, three times one number added to another number is 18. twice the first number minus the other number is twelve. find the numbers

    asked on January 23, 2008
  83. Math

    -5x - 8y = (-3,0) Is this ordered pair a solution

    asked on January 16, 2008
  84. Algebra

    Find three different ordered pairs that are solution of the equation Y= 7+4x

    asked on January 15, 2008
  85. science

    kevin has a piece of aluminum which has a density of 2.7gms/cm3 and a mass of 63 grams what is the volume of the piece of aluminum

    asked on September 17, 2007
  86. math

    k i need to solve the following system: 7x - 8y = 24 xy^2 = 1 i figured out that x = 1/y^2 and i can reduce it to : 7=24y^2+8y^3 but i don't know how to reduce it anymore after that I think I would solve it graphically, that is, plot on my graphing

    asked on August 12, 2007
  87. pre-algebra

    Mara ordered 5 bags of seed for $7.00 each and 3 wildflower seed kits for $9.00 each.She also paid a $13 shipping fee.Which expression shows the total cost? What is the solution of 5(n+m)when n=3 and m=6? Which inequality symbol makes the statement true?

    asked on March 7, 2007
  88. Math

    (3?5)?4?(14?2)=12

    asked on September 28, 2016
  89. math

    an airplane travels 750 miles in 1 hour and 45 minutes. what is the average velocity of the plane?

    asked on April 13, 2016
  90. geography

    what is the capital of fiji

    asked on June 16, 2015
  91. phi

    Midgley analyzes the position that each society is a separate culture with its own values. This position is known as

    asked on July 10, 2014
  92. calculus

    The velocity of a skateboard is v(t) = t^2 - 4 t + 3 m/s when moving in a straight line. A. Find the the change in displacement of the skateboard between 4 seconds and 6 seconds. (Note this may or may not be negative, meaning it goes in the opposite

    asked on March 8, 2014
  93. calculus

    \int_{4}^{13} f(x) \,dx - \int_{4}^{11} f(x) \,dx = \int_{a}^{b} f(x) \,dx where a= and b= .

    asked on March 8, 2014
  94. calculus

    A long narrow piece of land gets flooded each year by a river. The flooded area is in the shape of the area under the curve y = 2.3 x^3 and above the x-axis, for 0 \le x \le 3.2. All the distances are in metres.

    asked on March 8, 2014
  95. calculus

    a. The value of \displaystyle \int_{-2}^{-1} \frac{14}{ 4 x } dx is b. The value of \displaystyle \int_{1}^{2} \frac{14}{ 4 x } dx is

    asked on March 8, 2014
  96. calculus

    The following definite integral can be evaluated by subtracting F(B) - F(A), where F(B) and F(A) are found from substituting the limits of integration. \int_{0}^{4} \frac{1600 x +1200 }{(2 x^2 +3 x +1)^5}dx After substitution, the upper limit of

    asked on March 8, 2014
  97. calculus

    Find the area of the region under the curve y = 16 e ^{4 x} between x = -1.4 to x =1.4 .

    asked on March 8, 2014
  98. word problem

    juan bought 12 oranges and ate 1/4 of them carla bought 12 oranges and ate 1/3 of them . which ate more

    asked on March 14, 2013
  99. phy

    Some air at 275 kPa absolute pressure occupies 50.0m^3. Find its absolute pressure if its volume is doubled at constant temperature.

    asked on April 11, 2012
  100. physics

    a comet experiences a uniforn acceleration from 60m/s to 183m/s what is the rate of acceleration?

    asked on January 2, 2012

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