Popular questions and responses by jordan
  1. physics

    You throw a baseball directly upward at time t = 0 at an initial speed of 13.3 m/s. What is the maximum height the ball reaches above where it leaves your hand? At what times does the ball pass through half the maximum height? Ignore air resistance and

    asked on September 7, 2015
  2. chemistry

    Quantum numbers arise naturally from the mathematics used to describe the possible states of an electron in an atom. The four quantum numbers, the principal quantum number (n), the angular momentum quantum number (ℓ), the magnetic quantum number (mℓ),

    asked on November 4, 2016
  3. physics

    While standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 7.65 m/s. The stone subsequently falls to the ground, which is 11.1 m below the point where the stone leaves your hand. At what speed does the stone

    asked on September 7, 2015
  4. science

    An orange is placed on a table in a completely dark room, without any source of light. Which of the following choices correctly describes what an observer will see as he looks in the direction of the orange? A) The orange will not be seen at all because

    asked on April 23, 2019
  5. Physics

    The pressure and volume of an ideal monatomic gas change from A to B to C, as the drawing shows. The curved line between A and C is an isotherm. IMAGE:wvw.webassign.n3t/cj8/15-p-031.gif a)Determine the total heat for the process in joules. b)State whether

    asked on November 29, 2015
  6. Physics

    A shot-putter throws the shot (mass = 7.3kg) with an initial speed of 15.0 m/s at a 33.0 degree angle to the horizontal. Calculate the horizontal distance traveled by the shot if it leaves the athlete's hand at a height of 2.00m above the ground.

    asked on September 12, 2009
  7. physics

    An unsuspecting bird is coasting along in an easterly direction at 4.00 mph when a strong wind from the south imparts a constant acceleration of 0.300 m/s2. If the acceleration from the wind lasts for 2.70 s, find the magnitude, r, and direction, θ, of

    asked on September 8, 2015
  8. Chemistry

    Which of the following compounds contains both ionic and covalent bonds? SiO2 LiCN LiI PCl3

    asked on January 15, 2016
  9. chemistry

    Which neutral atoms have the following electron configurations in either a ground state or excited state? Enter the name or symbol. [Ar]4s23d3 - I know that this is Vanadium [Xe]6s24f1 - I thought that this was Lu but it counts it wrong each time! Help

    asked on November 4, 2016
  10. Chemistry

    At 25 °C, an aqueous solution has an equilibrium concentration of 0.00147 M for a generic cation, A (aq), and 0.000735 M for a generic anion, B2–(aq). What is the equilibrium constant, Ksp, of the generic salt A2B(s)?

    asked on May 6, 2016
  11. differential calculus

    a man 6 ft tall is walking toward a building at the rate of 4 ft/sec. if there is a light on the ground 40 ft from the building, how fast is the man's shadow on the building growing shorter when he is 30 ft from the building?

    asked on October 14, 2015
  12. geometry

    Ray BD bisects ∠ABC so that m∠DBC = (x + 6)° and m∠ABD = (2x – 12)°. What is x?

    asked on September 27, 2017
  13. Chemistry

    What is the minimum amount of 6.0M H2SO4 necessary to produce 19.0g of H2(g) according to the reaction? 2Al(s)+3H2SO4(aq)→Al2(SO4)3(aq)+3H2(g)

    asked on November 14, 2014
  14. Chemistry.

    Calculate the mass of CaCO3 that would produce 40 mL at STP. STP means P= 1 atm and T= 0 degrees C. How do I find the mass?

    asked on November 22, 2008
  15. AP GOVT

    The 25th amendment describes the sequence of events that would install the vice president as acting president against the will of the president. Outline that sequence of events.

    asked on August 17, 2009
  16. chemstry

    How long will it take 200 mg of carbon-14 to decay to the point where only 75 mg remain if the half-life is 5770 years?

    asked on October 31, 2013
  17. Geometry Help!!!

    . Katrina lives directly east of the park. The football field is directly south of the park. The library sits on the line formed between Katrina’s home and the football field at the exact point where an altitude to the right triangle formed by her home,

    asked on May 22, 2014
  18. physics

    The drawing shows a version of the loop-the-loop trick for a small car. If the car is given an initial speed of 4.5 m/s, what is the largest value that the radius r can have if the car is to remain in contact with the circular track at all times?

    asked on October 8, 2010
  19. Math

    What are the coefficients in the polynomial 4x^2+3x-3? I'm not posting this to get the exact answer, I just need help on finding the coefficients. I'm not real good with polynomials, and I've been struggling a little. I just need explaining on how to find

    asked on May 9, 2018
  20. math

    A student takes a multiple choice quiz with 12 questions and 5 alternatives per question. Unfortunately, this student has no idea what any of the answers are, so he randomly selects an alternative for each question on the exam. Using this “blind

    asked on September 24, 2015
  21. Pre-Calculus

    A parabolic satellite television antenna has a diameter of 16 feet and is 2 foot deep. How far is the focus from the vertex? is the answer 8ft?

    asked on August 21, 2019
  22. Physics

    A uniform rod of weight 5N and length 1m is pivoted at the 20cm mark from one end. A weight is hung from the other end so that the rod balances horizontally. What is the value of the weight?

    asked on September 29, 2016
  23. Physics

    Which of the following is correct for the reflected ray if a light ray strikes a plane mirror at an angle of 50° from the normal? a. 40° from the surface of the mirror b. 40° from the normal c. 50° from the surface of the mirror d. 90° from the normal

    asked on July 12, 2013
  24. Chemistry

    A compound is found to contain 50.05 % sulfur and 49.95 % oxygen by mass. What is the simplest (empirical) formula for this compound? They said to assume that it is 100 grams. I found the molar mass. S- 32.06 0-16.00 But now I don't know what to do. Please

    asked on August 27, 2015
  25. Math

    if 4/3 x 3/4 =5k whats k

    asked on March 28, 2013
  26. math

    the gas tank of a car is 2/3 full. a trip uses up 1/4 of the gas in the tank. how full is the tank at the end of the trip? please include how you got the answer, thanks

    asked on September 21, 2009
  27. Math

    Janna is using a cone-shaped cup to fill a cylindrical container. The cup has the same height and radius as the container. How many times will she have to fill the cylindrical container? A. 1/3 B. 1 C. 2 D. 3 It didn't show the numbers for the radius or

    asked on May 31, 2018
  28. Physics

    Five moles of an ideal gas are compressed isothermally from A to B, What is the work involved if the temperature of the gas is 332 K? Be sure to include the correct algebraic sign. GRAPH: wvw.webassign.n3t/cj8/15-fc-009.gif wvw and n3t need to be retyped

    asked on November 30, 2015
  29. American History

    I have been assigned a paragraph to "decode" of the Declaration of Independence. I am supposed to write it to make it so that it is easily understood and read-able. I'm having a hard time with it though, because I don't know what the actual words mean. It

    asked on September 8, 2008
  30. math

    Two sides of a triangle measure 25 cm and 35 cm.Which could be the third side.

    asked on June 12, 2017
  31. sinusoidal functions

    State an equation of a sinusoidal graph with the following properties. The central axis is at y = 5 Two consecutive minimums are found at (3, −1) and (13, −1 find values for a,b,c and d

    asked on February 6, 2016
  32. geometry

    Point A is the incenter of (triangle) PQR. Find each measure. ARU AU QPK

    asked on November 8, 2011
  33. Physics

    A baseball is popped straight up into the air and has a hang-time of 6.25 s. Determine the height to which the ball rises before it reaches its peak.

    asked on November 1, 2010
  34. economics

    4. Engineers for the Off Road Skateboard Company have determined that a 10% increase in all inputs will cause output to increase by 5%. Assuming that input prices remain constant, you correctly deduce that such a change will cause ________ as output

    asked on May 1, 2012
  35. physics

    A cannon is mounted on a tower above a wide, level field. The barrel of the cannon is 20 m above the ground below. A cannonball is fired horizontally with an initial speed of 900 m/s. Assuming air resistance can be neglected, approximately how long will

    asked on September 9, 2015
  36. math

    A room is 12 feet long and 10.5 feet wide. A scale model of the room is 3.5 feet wide. What is the area of the scale model? 10.3 square feet 14 square feet 36 square feet 122.5 square feet

    asked on July 20, 2015
  37. math

    Juan and rachel have the same number of marbles. Rachel gives away 10 marbles and Juan gives away 22 marbles. Rachel then has 3 times as many marbles as Juan. How many marbles did each of them have at first

    asked on November 19, 2014
  38. CHM

    Calculate the percent ionization of hydrazoic acid (HN3) in solutions of each of the following concentrations A) 0.377 M B) 0.107 M C) 4.16*10^-2 M Ka= 1.9*10^-5

    asked on October 8, 2012
  39. Chemistry

    how many grams of aluminum sulfate are produced if 23.33 g Al reacts with 74.44 G CuSO4

    asked on May 21, 2012
  40. Physics

    A shell is fired with velocity having horizontal and vertical components ux, uy. At the highest point of it's path the shell explodes into two fragments of mass m1, m2, which separate in a horizontal direction. The explosion generates kinetic energy E.

    asked on September 22, 2011
  41. physics

    A car starts from rest on a curve with a radius of 120m and accelerates at 1.0m/s^2. Through what angle will the car have traveled when the magnitude of its total acceleration is 2.0 m/s^2?

    asked on September 22, 2009
  42. Math

    Write y = -2/3x -4 in standard form using integers. 2x + 3y = -12 2x + 3y = -4 -2x +3y = -12 2x + 3y = 12 I just need to know the steps for the most part, I don't get them.

    asked on December 14, 2018
  43. English Help!

    What is one of Carmody's main motives in this scene?

    asked on May 15, 2017
  44. structural grammar

    Identify: May I go to the library?

    asked on September 23, 2016
  45. math

    what is the postulate for this 2(x + 3) = 2x + 6

    asked on January 11, 2016
  46. physics

    On the Moon, the acceleration due to gravity is 1.62 m/s^2. How far would a 19 g rock fall from rest in 6.5 seconds if the only force acting on it was the gravitational force due to the Moon?

    asked on September 8, 2015
  47. calculus

    A spherical balloon is leaking air at 2 cubic inches per hour. How fast is the balloon's radius changing when the radius is 2 inches.

    asked on January 9, 2012
  48. Math

    An access ramp enters a building 1 meter above ground level and starts 4 meters from the building. How long is the ramp? If it is not possible, write “not possible” and explain why it is not possible.

    asked on June 23, 2011
  49. Chemistry

    An atom it ground state contains 18 electrons. How many of these electrons are in orbitals with l=0? a.4 b.2 c.8 d.6

    asked on April 4, 2011
  50. dynamath

    the value of 2 coins is 35 cents. one of the coins is not a quarter. what are the 2 coins

    asked on June 7, 2010
  51. Math

    The standard form of a linear equation is Ax + By=c. If b=0 and A and c are positive which best describes the graph of this equation?

    asked on June 10, 2019
  52. Social studies PLEASE HELP!

    1. What was one impact of the Iranian Revolution on the United States? a. Higher oil prices*** b. Increased terrorisim c. Increased taxes d. Increased military spending

    asked on May 18, 2017
  53. History

    How were natural disasters linked with the Mandate of Heaven?

    asked on May 10, 2017
  54. Math

    Determine the range of each function a)f(x)=(x^2+3)^2,XER Answer is f(x)ER, f(x)>9 b)f(x)=1/3+x^4,XER Answer is f(x)ER, 0

    asked on October 7, 2013
  55. Chemistry

    Mass of evaporating dish = 41.36 g Volume of saturated NaCl solution = 10.0 mL Mass of evaporating dish and NaCl = 44.50 g Mass of sodium hydrogen carbonate = 0.49g What is the morality(M) of the sodium chloride solution if you prepare in 1 liter of

    asked on August 30, 2011
  56. geometry

    Which of the following are measurements of the sides of a right triangle? Select one of the options below as your answer: A. 3, 4, 5 B. 28, 26, 12 C. 17, 14, 6 D. all of the above

    asked on May 6, 2011

    In which of the following sentences is the semicolon used correctly? A. There were five items on the kitchen counter; a coffeemaker, a bag of beans, agrinder, a sugar bowl, and a cracked cup. B. At first Icouldn't make out what kind of bird it was,but as I

    asked on August 6, 2008
  58. math

    a set of 20 cards is numbered 1,2,3,... ..20. Suppose you pick a card at random without looking. Find the probability of each event. Write as a fraction in simplest form. P(3 or 13)

    asked on March 25, 2008
  59. algebra1


    asked on September 5, 2007
  60. Chemistry

    Calculate the value of Keq for the following equation. Heat + N2(g) + 3H2(g) ↔ 2NH3(g) [N2] = .533M [H2] = 1.600M [NH3] = 0.933M Bob if you're here, can you tell me if adding a substance like "Heat" to the equation changes the whole problem? Or does it

    asked on May 21, 2020
  61. Chemistry

    Write the equilibrium expression for each of the following reactions: N2 (g) + 3 H2 (g) ↔ 2 NH3 (g) + heat Please guide me and help!

    asked on May 21, 2020
  62. math

    A cyclist rides her bike at a speed of 21 km/h what is the speed in kilometers per minute how many kilometers in a cyclist travel in 10 minutes do not round your answers

    asked on April 27, 2020
  63. Geography

    Which hemisphere is responsible for most of the world's research and development? Northern Hemisphere or Southern Hemisphere. I've been reading over a site our teacher gave us, but I can't seem to find this.

    asked on November 1, 2018
  64. Math1

    Bacteria can multiply at alarming rate when each bacteria splits into two new cells , thus doubling. If we start with only one bacteria which can double every hour , how many bacteria will have by the end of one day?

    asked on March 22, 2017
  65. Chemistry

    What is the equilibrium constant in the following reaction [C][O2]/[CO2] [CO2]/[C][O2] [C]^2[O2]^2/[CO2]^2 [CO2]^2/[C]^2[O2]^2

    asked on May 4, 2016
  66. Chemistry

    Consider the reaction N2(g)+3H22NH3(g). What is the effect of decreasing the volume on the contained gases The reaction shifts toward the product gas The system reacts by increasing the number of gas molecules*** the pressure on the gases decreases

    asked on May 4, 2016
  67. History

    Two methods used to control annual floods were ______________

    asked on December 11, 2014
  68. English help

    Question 1 Marks: 1 A common theme that runs through all the sections of Song of Myself is Whitman's own — Choose one answer. a. belief in his power as a poet b. love of solitude c. inability to trust people d. failure to change the world Question 2

    asked on July 25, 2012
  69. Huck Fin

    "Two or three days and nights went by; I reckon I might say they swum by, they slide along so quiet and smooth and lovely. Here is the way we put in the time. It was a monstrous big river down there—sometimes a mile and a half wide; we run nights, and

    asked on January 26, 2012
  70. Huck fin

    If you have read Huckleberry Finn before, what was your initial reaction to it?

    asked on January 20, 2012
  71. Math (Calculus)

    A tank has the shape of an inverted circular cone with a base radius of 5 meters and a height of 20 meters. If water is being pumped into the tank at 2 cubic meters per minute, find the rate at which the water level is rising when the water is 7 meters

    asked on January 9, 2012
  72. math (Caluclas)

    A spherical ballon is leaking air at 2 cubic inches per hour.l How fast is the ballons radisu chancing when the radisu si 3 inches.

    asked on January 9, 2012
  73. Physics

    A 5 kg ball is initially at rest at the top of a hill 10m high. If it rolls down the hill (converting all of its potential energy to kinetic energy,) what is the maximum kinetic energy it could have at the bottom of the hill? -I am not sure what formula to

    asked on June 28, 2011
  74. math

    B is the midpoint of segment AC. AB = 5x and BC = 3x + 4. Find AB, BC and AC.

    asked on June 27, 2011
  75. math 10

    how do i work out the answer to: "how many integer values are there for k for which 4x^2 + kxy - 9y^2 is factorable?"

    asked on January 24, 2011
  76. math

    what fraction strips would you use yto find the sum of 3/8 and 4/8? explain

    asked on December 9, 2010
  77. Chemistry

    Use a combustion reaction of liquid ethanol in air as a source of work, assuming temperature is 25 deg C, air pressure is 1atm and all products are gases with partial pressures of 10atm each. How high can one lift a 1000kg weight by burning 100g of

    asked on November 7, 2010
  78. physics

    An electric drill starts from rest and rotates with a constant angular acceleration. After the drill has rotated through a certain angle, the magnitude of the centripetal acceleration of a point on the drill is twice the magnitude of the tangential

    asked on October 24, 2010
  79. chemistry

    a mixture of 3 gases a, b and c is at a total pressure of 6.11 atm the partial pressure of gas a is 1.68 atm, that of gas b is 3.89 atm. what is the partial pressure of gas c?

    asked on May 24, 2010

    1.Three fatty acids form a triglyceride with one glycerol. What similarities would the fatty acids have with polysaccharides? What differences? 2. When you consume more food than you require, the mitochondria in the liver are involved n forming

    asked on October 18, 2009
  81. Chemistry

    A 20.29 g sample of impure MgCO3 is completely decomposed at 1000oC in previously evacuated 2.0 L reaction vessel. After the reaction was complete the solid residue had a mass of 15.9 g. Assume that only MgCO3 could produce gas CO2 what percent of original

    asked on December 2, 2008
  82. math(geometry)

    find a counterexample for the following statement. If a number is divisible by 5, then it is divisible by 10. What is the counterexample of that statement?

    asked on September 23, 2007
  83. Algerba

    would you expect a positive, a negative, or no association between the number of hours of daylight during a day and the number of hours of darkeness?

    asked on September 17, 2007
  84. Physics

    1.Which class lever will never give you a mechanical advantage? 2.Which class lever will always give you a mechanical advantage? 3.List the 3 things that are required to do work. Please help My answer: 1. Class 1? 2. Class 2? 3. I don't know.

    asked on May 22, 2020
  85. Physics

    1.Which class lever will never give you a mechanical advantage? 2.Which class lever will always give you a mechanical advantage? 3.List the 3 things that are required to do work. Please help My answer: 1. Class 1? 2. Class 2? 3. I don't know.

    asked on May 21, 2020
  86. Chemistry

    The Ksp of PbI2 is 8.73 × 10-9. Find the solubility of PbI2 in M Please guide me , the I C E table still confuses me, please help me!!

    asked on May 4, 2020
  87. math


    asked on April 16, 2020
  88. Math

    Carson drew a line perpendicular to the x axis through (7,3) which option shows its equation and slope

    asked on March 29, 2020
  89. Algebra

    Two negative integers have a sum of -10 and a product of 24. Find the two integers.

    asked on April 4, 2019
  90. World History

    How did Asoka foster peace during his reign? Select all that apply. -He posted his laws in public on stone pillars. -He made everyone observe Buddhist practices. -He fought wars of conquest throughout his rule. He built rest houses and set up hospitals.

    asked on November 28, 2018
  91. Social Studies

    Which of the following were the cost of mining? Choose all that apply. A. Streams that were polluted and forests cut down B. permanent settlements began C. foreign miners were treated unfairly D. lawlessness and disorder were rampant I kinda don't really

    asked on May 4, 2018
  92. Math

    Jennifer got a box of chocolates. The box is a right triangular prism shaped box. It is 7 inches long, and the triangular base measures 2 inches x 3 inches x 4 inches. What is the surface area of the box of chocolates?

    asked on February 27, 2018
  93. Science

    Scientists have discovered a new virus that is very different from any known viruses. What type of matter is the virus most likely made of? A)combination of protons and some atoms that have not been discovered so far. B)Combination of protons of differnt

    asked on November 3, 2017
  94. Math

    1: Goldbach's Conjecture is a famous conjecture that has never been proven true or false. The conjecture states that every even number, except 2, can be written as the sum of two prime numbers. For example, 16 can be written as 5+11. 1 a: Write the first

    asked on October 9, 2017
  95. Math

    Thirty six members of the middle school choir or 30% participated in the regional contest as shown in the model below

    asked on April 28, 2017
  96. Math1

    In 1985, there were 285 cell phone subscribers in the same small town of Centerville. The number of subscribers increased by 75% per year after 1985. How many cell phone subscribers were in 1994?

    asked on March 22, 2017
  97. chemistry

    The number of unpaired electrons and the element for [Xe]6s24f145d7: I know the element is Iridium but I cannot figure out the unpaired electrons!

    asked on November 25, 2016
  98. chemistry

    A sample of 45.1 g of methane gas (CH4(g)) has a volume of 6.20 L at a pressure of 2.90 atm. Calculate the temperature. Another one that I'm stumped on, last question for my practice exam, can you explain how to solve?

    asked on November 4, 2016
  99. Math

    If the volume of a cube is 125m cubed, what is the expression for lenght of each side? I got the answer 5m cubed

    asked on October 18, 2016
  100. math

    The area of a circle is 25π square inches. What is the length of the radius of the circle in inches? (Area of circle = πr^2). I don't understand it please explain it to me

    asked on October 17, 2016


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