RILEY

Popular questions and responses by RILEY
  1. Math

    On the spinner below, what is P(odd) The numbers on the spinner are 13543256 Answers A. 5/8 B. 5/3 C. 1/2

    asked on May 25, 2017
  2. CHEMISTRY

    Given that the specific heat capacities of ice and steam are 2.06 J/g°C and 2.03 J/g°C, the molar heats of fusion and vaporization for water are 6.02 kJ/mol and 40.6 kJ/mol, respectively, and the specific heat capacity of water is 4.18 J/g°C, calculate

    asked on November 2, 2010
  3. Economics

    You discover a new clothing store (Store X) across the street from an existing department store (Store Y). Both stores offer the same brands and styles of T-shirts. However, Store X offers their clothing for less. How might this event affect the demand

    asked on June 9, 2020
  4. Math

    Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y > 3x + 10 y is less than negative 3 over 4 times x minus 1 Part A: Describe the graph of the system, including shading and the types

    asked on December 19, 2015
  5. physics

    A mountaineer is doing a vertical rappel. She is using a big boulder/stone as her anchor. The Mountain guides association advises that in this type of situation, the boulder should be bigger than a refrigerator. The boulder should be sitting on a surface

    asked on June 13, 2017
  6. Math

    Which of the following transformations will never produce a congruent figure? A. rotation B. reflection C. translation D. dilation

    asked on May 22, 2014
  7. chemistry

    Consider the following double displacement reactions. For each reaction, complete and balance the equation and give the net ionic equation. NH4Cl(aq)+Ca(NO3)2(aq) -> NH4(NO3)2+CaCl the second half of the equation is what I had done but I think its not

    asked on November 11, 2010
  8. Algebra Help me Please

    Someone please help me with this!!! Ray and Kelsey have summer internships at an engineering firm. As part of their internship, they get to assist in the planning of a brand new roller coaster. For this assignment, you help Ray and Kelsey as they tackle

    asked on April 26, 2016
  9. Chemistry

    What is the net ionic equation for this reaction? 3CuCl2(aq) + 2K3PO4(aq) = Cu3(PO4)2(s) + 6KCl(aq)

    asked on October 8, 2019
  10. physics

    A mountaineer is doing a vertical rappel. She is using a big boulder as her anchor. The Mountain guides association advises that in this type of situation, the boulder should be bigger than a refigerator and should be sitting on a surface that is

    asked on June 12, 2017
  11. math

    The diameter and the slant height of a cone are both 24 cm. Find the radius of the largest sphere that can be placed inside the cone. (The sphere is therefore tangent to the base of the cone.) The sphere occupies a certain percentage of the cone’s

    asked on February 13, 2017
  12. math

    Lydia wrote 4.5 pages on her science report in 1 hr.What was her writing rate in pages per minute?

    asked on January 12, 2016
  13. Health

    I'm worried I might be having petit mal seizures. Every so often, I am doing something, then I lapse out for a few seconds then suddenly regain awareness. I still can see during this time, but my thoughts are interrupted, not by other thoughts, but just by

    asked on October 30, 2009
  14. Physics

    Two charges 10uC (point A) and -10uC (point B) are placed 10cm from each other. Find the electric field at a point P perpendicular bisector of AB at a distance 12cm from the middle. Can someone get me started on this one? I'd appreciate any help. Thanks

    asked on January 31, 2008
  15. Physics

    Two charges (+4C and -3C)are separated by .00002m. What is the electrostatic force and its direction? Using Coulomb's law, I arrived at 2.696 x 10^20 J. Would the direction be said to be "towards the positive charge"? Is this correct? Thanks

    asked on January 30, 2008
  16. STATISTICS

    A study of college football games shows that the number of holding penalties assessed has a mean of penalties per game and a standard deviation of penalties per game. What is the probability that, for a sample of college games to be played next week, the

    asked on October 24, 2016
  17. Pre-Calculus

    If sin(theta)=15/17 and cos(beta)=(-5/13 (both theta and beta are in quadrant II) find tan(theta+beta)

    asked on November 14, 2010
  18. Chemistry

    When 0.500 g of an unknown compound was dissolved in 15.0 g benzene, the freezing point depression was determined to be 0320C . The molar mass of the unknown compound is ? g/mol. (The freezing point depression constant for benzene is 512C kgmol .

    asked on April 7, 2008
  19. Science

    I need an acrostic poem for the word waves.

    asked on November 8, 2017
  20. physics

    A plane is in a steep downward plunge. To not crash, captain Q pulls as much as he can. When the plane is at the lowest point of the plane's path the plane is in a circular arc of radius 450m. Captain Q experiences an acceleration of 5.0g ( so her weight

    asked on July 9, 2017
  21. physics

    A few children are playing around the carousel at the park. You see that one of them can't hold on to the edge of the carousel ( that has a radius of 2m) when it takes less than 3.0s to do one full revolution. a) what's the acceleration that the kid can

    asked on July 9, 2017
  22. Chemistry

    AgNO3 + NaCl -> AgCl + NaNO3 Which statement about this reaction is FALSE? A. This is one kind of metathesis reaction, where molecules exchange atoms. B. This reaction produces a gas. C. This is a precipitation reaction. D. The equation is balanced.

    asked on April 17, 2017
  23. Chemistry

    A sample of Chlorine occupies 8.50 L at 80.0 C and 740 mm Hg. What volume will Chlorine occupy at STP?

    asked on November 27, 2016
  24. Algebra

    whats the answers to the "why are mr. and mrs. number so happy

    asked on September 22, 2016
  25. English

    I need some help with the answers to these questions, (mainly to see if I'm correct, where I'm wrong and WHY I'm wrong) 1. What is the verb mood of the sentence below? Wear your coat when you are in the school indicative mood imperative mood ***my answer

    asked on January 21, 2016
  26. Chemistry

    The theoretical yield of a reaction is the amount of product obtained if the limiting reactant is completely converted to product. Consider the reaction: P4(s) + 6 Cl2(g) → 4 PCl3(l) If 19.47 g P4 is mixed with 6.85 g Cl2, calculate the theoretical yield

    asked on November 26, 2015
  27. Calc

    A beach ball is deflating at a constant rate of 10 cubic centimeters per second. When the volume of the ball is 256/3(pi) cubic centimeters, what is the rate of change of the surface area? (S=4(pi)r^2 and V=4/3(pi)r^3)

    asked on December 22, 2014
  28. Algebra

    A new set of car tires has a tread depth of 8 millileters. The tread depth decreases 0.12 millimeter per thousand miles driven. Write an equation that gives the tread depth as a function of the distance driven. Then predict what distance the tread depth

    asked on September 23, 2014
  29. Physics

    A 2.5 kg block of ice at a temperature of 0C and an initial speed of 5.7 m/s slides across a level floor. If 3.3*10^5 J are required to melt 1.0 kg of ice, how much ice melts, assuming that the initial kinetic energy of the ice block id entirely converted

    asked on February 20, 2012
  30. Physics

    An airline pilot pulls her 12.0 kg rollaboard suitcase along the ground with a force of 25.0 N for 10.0 meters. The handle she pulls on makes an angle of 42.5 degrees with the horizontal. How much work does she do over the ten-meter distance? Tried doing:

    asked on January 12, 2012
  31. physics

    A 4.63-g bullet is moving horizontally with a velocity of +349 m/s, where the sign + indicates that it is moving to the right (see part a of the drawing). The bullet is approaching two blocks resting on a horizontal frictionless surface. Air resistance is

    asked on October 15, 2011
  32. physics

    Two ice skaters have masses m1 and m2 and are initially stationary. Their skates are identical. They push against one another, as in Figure 7.10, and move in opposite directions with different speeds. While they are pushing against each other, any kinetic

    asked on October 15, 2011
  33. exam study math guide CRUICAL

    The average of Anne's, Sara's, and Julie's test score is 72. Julie scored 100 and Anne scored 10 points higher than Sara.what were annes and saras scores?

    asked on December 11, 2010
  34. Social Studies/ World History

    Hammurabi’s Code Hammurabi’s Code listed 282 laws dealing with a variety of subjects. A few examples of these laws are listed below. 196. If a man put out the eye of another man, his eye shall be put out. 197. If he breaks another man’s bone, his

    asked on August 16, 2010
  35. physics

    Lucy is going skin diving to see coral off the coast of Mexico in sea water with a density of 1025 kg/m^3. If she were to hold her breath as she ascends to the waters surface a)by how many times would the volume of her lungs change assuming the water

    asked on July 27, 2010
  36. Economics

    In the hope of high returns, venture capitalists provide funds to finance new (start up) companies. However, potential competitors and structures of the market into which the new firm enters are extremely important in realization of profits. Among

    asked on May 11, 2010
  37. Mathematics

    A right circular cone of base radius r cm and height h cm fits exactly into a sphere of internal radius 12cm. a)Express r in terms of h. b)If the volume of the cone is Vcm cube, show that V=8¶h^2 - 1/3¶h^3 c)Find the value of r for which V has a turning

    asked on June 19, 2009
  38. calculus

    I need help simplifying this problem. f(x)=x^4/5(x-4)^2 f'(x)=x^4/5*2(x-4)+(x-4)^2*4/5x^-1/5 it is suposed to end up as this: 1/5x^-1/5(x-4)[5*x*2+(x-4)*4] but how do i get it to there? I need to see all the steps and how to get them. Thanks

    asked on March 31, 2009
  39. Physics

    Jordan is trying to loosen a stuck bolt in his motor home. To loosen it ,he is using a wrench that is 60cm long. If he hangs from the wrench, what is max torque he can exert ? Jordan is 75kg

    asked on July 14, 2017
  40. physics

    A firework whose mass is 7kg is launched vertically up into the air. After it reaches its the height of 160m, it blasts and splits into two pieces; pieces A and B. The two pieces fly off and travel horizontally. The blasts of the fireworks lasts 10ms.

    asked on July 4, 2017
  41. physics

    Two boxes are connected by a cord running over a pulley. Box A is on a table and Box B is hanging off of the pulley. The system is released from rest and Box B drops a distance D. What is the word done by gravity on box B?

    asked on June 12, 2017
  42. physics

    Two books are stacked on top of each other. Book 1 is on top of Book 2. Book 1 has a string attached to it. The string is connected to the wall. The wall is to the left of the stacked Books. Book 2 is pulled to the right with a force F big enough to move

    asked on June 4, 2017
  43. English

    Would I need to put (Emerson) for each one of the quotes in this sentence? And is the commas placed correctly? This is for an reflection essay and I have already mentioned the title of where I got these quotes from before this sentence and I am only

    asked on April 30, 2017
  44. stats

    Anita's a fast food chain specializing in hotdogs and garlic fries, keeps track of the proportion of its customers who decide to eat in the restaurant so it can make decisions reguarding possible construction of the in-store play areas.the attendance of

    asked on October 1, 2016
  45. Stats

    The workers union at a certain university is quite strong. About 94% of all workers employed by the university belong to the workers union. Recently, the workers went on strike and now a local TV station plans to interview a sample of 20 workers ,chosen at

    asked on October 1, 2016
  46. Algebra 2 (Math)

    What is the vertex form of the equation? y = -x^2 + 12x - 4. I have no clue how to do this.

    asked on December 14, 2015
  47. math

    Charlie can type faster than any of his classmates. He took a test that showed he can type 700 words in 5 minutes . How many words can he type per minute

    asked on December 6, 2015
  48. math

    On a centimeter dot grid, draw all possible rectangles with a perimeter of 14 cm and sides whose lengths are whole centimeters.

    asked on April 1, 2015
  49. Physics

    Two forces are applied to a car in an effort to move it, as shown in the following figure (cannot attach picture), where F1 = 416 N, 10 degrees to the left of north and F2 = 356 N, 30 degrees to the right of north. What is the sum of these two forces

    asked on September 12, 2014
  50. Physics

    An ideal monatomic gas goes from p1 = 180 atm and V1 = 45 m3 to p2 and V2 through an adiabatic process. If p2 = 60 atm, what is V2?

    asked on February 3, 2014
  51. math

    I'm doing a unit on volume and surface area. So there's a diagram that shows a fish tank after a container of water is poured into the tank. How many containers of water are needed to fill the tank? What is the formula to finding this?

    asked on May 10, 2012
  52. Chemistry

    A 500g iron (Fe) rod was left in air for a long period of time, and got covered with rust (Fe2O3) as a result of reaction with atmospheric oxygen. The mass of the rusty rod was determined as 560g. a) calculate the theoretical yield of Fe2O3(s), that is the

    asked on March 18, 2012
  53. Physics

    A hockey stick applies a constant force over a distance of 0.127 m to an initially stationary puck, of mass 152 g. The puck moves with a speed of 51.0 m/s. With what force did the hockey stick strike the puck?

    asked on January 12, 2012
  54. math

    the avreage of annes saras and julies test score is 72 julie scored 10 and anne scored 10 points higer than sara. what were annes and sara scores?

    asked on December 5, 2010
  55. CHEMISTRY

    1. What is another name for freezing, the opposite of melting? 2. What happens to the boiling point of water when you measure it at high altitudes? 3. What intermolecular forces act in the following: H2PH3 CH3NH2 4. Give an example of an atomic solid?

    asked on November 3, 2010
  56. chemistry

    The "Chemistry in Focus" segment A Magnetic Moment discusses the ability to levitate a frog in a magnetic field because electrons, when sensing a strong magnetic field, respond by opposing it. This is called diamagnetism. Atoms that are diamagnetic have

    asked on October 12, 2010
  57. physics

    One cool 5.0 degree C spring morning, Mason lays a brick sidewalk up to his house, placing the 25 cm long bricks end to end against eachother. However, Mason forgets to leave a space for expansion and when the temperature reaches 36 degree C, the bricks

    asked on July 27, 2010
  58. physics

    A water tower sits on top of a hill and supplies water to citizens below. The difference in pressure between the water tower and the Dailey's house is 1.1x10^5 Pa, while the difference in pressure between the tower and the Stearns' house is 3.2x10^5 Pa.

    asked on July 27, 2010
  59. Math

    Ted put several different integers in order from least to greatest. He then put the same integers in order from greatest to least. Both times the same n umber was third in order.

    asked on March 10, 2010
  60. Calculus

    Find an equation of the line through the point (3,5) that cuts off the least area from the first quadrant. How do I solve? I am stuck. The only thing I can come with is this: y-5=m(x-3) How to use this I don't know.

    asked on April 22, 2009
  61. calculus

    (a) find the intervals on which f is incrs or decrs. (b) find the local min/max values of f. (c) find the intervals of concavity and the inflection points. f(x)=(lnx)/sqrtx I took the derivative and got 2-lnx/2x^3/2 take the values when f'(x) >0 I get

    asked on April 6, 2009
  62. College Stats

    A machine fills 64 ounce detergent jugs. It is known that the net amount of detergent poured into each jug has a normal distribution with a standard deviation of 0.35 ounces. The inspector wants to adjust the machine such that at least 95% of the jugs have

    asked on October 28, 2008
  63. Chemistry

    A solution is made by mixing 25.0 mL of toluene C6H5CH3 d=0867gmL with 135.0 mL of benzene C6H6 d=0874gmL . Assuming that the volumes add upon mixing, the molarity (M) and molality (m) of the toluene are how would i start this problem?

    asked on April 7, 2008
  64. us history

    The most useful indicator of the degree of democracy reached by a particular society is whether it has a... formal method whereby people can effect changes in government policy, system of government checks and balances, two-house legislature, system of

    asked on October 9, 2007
  65. math

    whats the product of 1 2/3 and 3 and 3/4 ?

    asked on May 12, 2020
  66. English

    only with ice: _ _ _ _ _ rock_

    asked on March 13, 2020
  67. English

    How can I tell If a source is credible or not like what are the signs of it being legit and accurate? My English teacher did not explain thoroughly.

    asked on March 12, 2020
  68. Chemistry

    In a constant‑pressure calorimeter, 75.0mL of 0.950 M H2SO4 was added to 75.0 mL of 0.250 M NaOH. The reaction caused the temperature of the solution to rise from 23.24∘C to 24.94∘C. If the solution has the same density and specific heat as water

    asked on February 3, 2020
  69. Economics

    Suppose you take a loan of $1000 today at a compound interest of 10 percent. Calculate the loan amount at the end of year 2. Thanks!!!

    asked on December 4, 2019
  70. Biology

    In biology, would effectiveness and neutralizing mean the same thing for anti-acids? Like if alka-seltzer was more effective than tums, would it make it a better neutralizer?

    asked on September 3, 2019
  71. Chemistry

    In the reaction Ca → Ca2+ + 2e-, Ca is __________. A:reduced because it gains electrons B:reduced because it loses electrons C:oxidized because it gains electrons D:oxidized because it loses electrons

    asked on May 24, 2019
  72. geography

    The economic centers of the northeast are the regions

    asked on March 1, 2019
  73. Science

    1 Why is the area around the divergent boundary also known as the sea floor spreading 2 Features can be found around the sea floor spreading zone that indicates the plates are moving apart 3 Why do most seafloor spreading zones usually occur under water 4

    asked on January 6, 2019
  74. Science

    1 Why is the area around the convergent boundary also known as The zone of subduction 2 what features can be found around the zone of subduction that indicates the plates are smashing together 3why does one plate sink under another 4 what part of the

    asked on January 6, 2019
  75. Math

    This is my first time using this site so this is a test to see if anyone will actually help and how long it takes for a response so plz when you see this write I saw this plz

    asked on November 28, 2018
  76. Algebra readiness(pre-algebra)

    Im confused on this test 1.which of the following is greater than 4.3×10^9 A.)2.1×10^9 B.)3.2×10^9 C.)5.3×10^9 D.)7.4×10^8 If possible I need help with all questions

    asked on October 28, 2018
  77. English

    24. Your responses include the following to receive the points in parentheses: ~ Respond in one or two paragraphs. Answer is written in complete sentences. Write one or two paragraphs to answer the question below. Include at least two supporting details or

    asked on October 25, 2018
  78. Physics

    A skater of mass 80.5 kg initially moves in a straight line at a speed of 4.90 m/s. The skater approaches a child of mass 41.0 kg, whom he lifts on his shoulders. Assuming there are no external horizontal forces, what is the skater's final velocity?

    asked on October 22, 2018
  79. Algbra 1

    x varies directly with y and z x=1200,when y=20 and z=30. Find x when y=10 and z=20

    asked on May 11, 2018
  80. Language Arts

    how does alliteration add to the description of the scene

    asked on May 9, 2018
  81. MATH

    Owen deposited $900 in a savings account with simple interest. Two years later, he had earned $144 in interest. What was the interest rate?

    asked on April 10, 2018
  82. Science

    Which of following is not an igneous rock. Pumice Obsidion Or limestone

    asked on November 6, 2017
  83. college algebra

    List the x value of each real zero and its multiplicity. List them in increasing order. If a listed zero does not exist, enter DNE in both fields.

    asked on October 22, 2017
  84. Math

    What is 1/7 multiplied by 2/4 divided by 2/9 added by 5/6 subtracted by 3/5?

    asked on September 13, 2017
  85. physics

    On planet Earth, a pendulum has a length of L and a period of T .On planet Mars, the pendulum has a length of 4L and period of 5T.what is the acceleration due to gravity ?

    asked on July 30, 2017
  86. physics

    A wheel has an initial velocity of 3.40rad/s and it rotates 1.25 revolutions before stopping what is the angular acceleration of the wheel how long does it take for the wheel to come to rest

    asked on July 20, 2017
  87. Physics

    A 30m bar with a mass of 20kg is being lifted by a string. The bar makes an angle of 55 degrees above horizontal (between the bar and ground). The string is attached to the ceiling vertically. What is the tension on the string? What is the normal force

    asked on July 16, 2017
  88. Physics

    A bar with a mass of 20kg with a length of 30m is being lifted by a string and makes an angle of 55 degrees. The string is attached to the ceiling vertically. What is the tension on the string? What is the normal force given by the bar on the string what

    asked on July 16, 2017
  89. physics

    A patient is getting his elbow rehabilitated. He is told to lay his elbow flat on a table and lift a a 3.5kg weight by bending his elbow( he's raising his forearm itself and the weight). The weight is 30cm from his elbow. After telling his therapist that

    asked on July 14, 2017
  90. physics

    A tick is standing on a turntable at distance r from the centre. The static friction coefficient between the tick and table is us. The table is spinning at a constant angular frequency of w a) what values of r is the bug most likely to slip at? small or

    asked on July 11, 2017
  91. physics

    A kid places a toy on the outermost edge of a merry go round. The amusement park ride has a radius R and period T. What is the smallest value of us (static friction coefficient) between the toy and merry go round where the toy is able to stay on the ride?

    asked on July 9, 2017
  92. physics

    Suppose that a car wheel is spinning with angular velocity of wo. The car is then turned off and the wheel start to slow down because of friction and angular acceleration is constant. The wheel comes to rest after it has made X revolutions. What is the

    asked on July 4, 2017
  93. physics

    Ball 1 is moving to the right at speed Vo when it collides with ball 2 - is initially at rest. After the collision, ball 1 's initial KE decreases by 80% and has a velocity at an angle of 40 degress below the horizontal. what fraction of the initial KE

    asked on July 3, 2017
  94. Chemistry

    The pressure changes from 760mmHg to 742 mmHG. When that occurs, the volume changes from 2.8L to 3.1L. The initial tempature is 20 celcious. What is the new tempature if miles remain the same? When I did this I subtracted 760 to 742 to get 18 and

    asked on June 13, 2017
  95. physics

    Why is that a lighter object with the higher velocity produces a higher kinetic energy than a heavier object with lower velocity ?

    asked on June 12, 2017
  96. physics

    A detective is investigating a scene of an accident. He measures the length of an automobile's skid marks to find out how fast the automobile was going at the very beginning of the skid. Express In terms of V ( speed), L ( length) and any other suitable

    asked on June 10, 2017
  97. physics

    A block of mass m is pressed against a vertical wall with a force F acting at an angle theta. What are the maximum and minimum forces of F that can be applied and still have the block remain stationary?

    asked on June 5, 2017
  98. Math

    A set of stairs has a rise of 6 inches and a run of 9 inches. The building safety code says the stairs should rise at an angle of between 30 degrees and 35 degrees. Does this set of stairs meet the safety regulations? Justify your answer by showing

    asked on May 5, 2017
  99. Math

    A ramp has a slope of 0.25. If the rise is 4 feet, what is the horizontal distance covered by the ramp?

    asked on May 5, 2017
  100. Climate

    Which of the following statements about climate is FALSE? A. Deserts usually occur at very low altitudes. B. Temperatures usually decrease with altitude. C. Coastal temperatures are usually cooler than inland temperatures. D. The southern hemisphere is

    asked on March 6, 2017

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