Posts by Morgan

Total # Posts: 873

  1. Algebra 2

    Which property is shown by the following statement? 3 × (9 + 6) = 3 × 9 + 3 × 6 A. The Associative Property of Multiplication B. The Identity Property of Multiplication C. The Distributive Property D. The Identity Property of Addition
  2. Physics

    Describe the meaning of the following terms as they are applied to waves: amplitude, frequency, wavelength. Explain how changes in one of these things would affect a light or sound wave in real life.
  3. Physics

    What is the relationship between me pushing my daughter my on a swing and colored light shining on the cones in my eyes?
  4. Physis

    Watch an online video of the collapse of the Tacoma Narrows Bridge What do you think? What is the relationship between the collapse of the Tacoma Bridge and me pushing my daughter on a swing?
  5. Physics

    Can measuring the time between seeing the lightning and hearing the thunder really tell you how far away the lighting struck? If so, then how does it work?
  6. Physics

    Is there a relationship between the size of a musical instrument and the frequency of the sounds it produces? If so, then what is it?
  7. Physics

    In what ways are electric generators similar to electric motors? In what ways are they different? Is it possible to use the same apparatus as both a generator and a motor?
  8. Physics

    The fact that the lights don't get dimmer when you turn on another one is evidence that the lights are wired in parallel. Explain.
  9. Physics

    Occasionally someone builds a house "off the grid." They put a bunch of solar panels on the roof and never connect to an electric company. These folks all use DC in their homes. Why do you suppose that is?
  10. Physics

    Household electricity is all AC. Early on Thomas Edison pushed for houses to use DC. Why did AC win out in the end? What do you suppose was Edison's motivation for preferring DC?
  11. Physics

    In the olden days Christmas lights were wired in series. Why was this not very festive?
  12. Physics

    When you freeze a metal pot, and ceramic mug, and take them out and get the bathroom steamy. What do you observe in terms of condensation? How does the condensation on the ceramic mug compare with the condensation on the metal pot?
  13. Physics

    How is it possible to feel warm in one room and cold in another if the air in both is at the same temperature?
  14. Physics

    If you drop a hot rock into a pan of cold water what happens? Why? How about if you drop the hot rock into the Atlantic ocean?
  15. Physics

    Why might wrapping a bottle in a wet cloth at a picnic cool the bottle faster than placing the bottle in a bucket of cold water?
  16. Physics

    Pick a type of thermometer. How does it work? Suppose you used water in a thermometer instead of mercury, why might this be a problem at 4 degrees Fahrenheit?
  17. Physics

    What is Bernoulli's principle? Use Bernoulli's principle to explain how one of the following works: an airfoil, a curve ball, the wind blowing the roof off a house.
  18. Physics

    What is a buoyant force? Be sure to give and explain an example.
  19. Physics

    Did you ever see one of those hydraulic jacks that a backyard mechanic might use to lift up the corner of a car. He rolls the thing under the car, pumps up and down a long handle and the car not-so-magically begins to levitate. How do you suppose this thing might work (think ...
  20. Physics

    Weightlessness can be experienced in an airplane by having the plane descend just right. How does this work? Is this weightlessness real or just simulated?
  21. Physics

    In what sense do the moon fall?
  22. Physics

    Your friend doesn't believe you when you tell her that the acceleration due to gravity on earth is the same for both light and heavy objects. How could you convince her?
  23. Physics

    Sit down somewhere where there are lots of people. Now categorize the people according to gender and hair color. Start with the males: Observe at least 20 and keep track of how many have hair that is in one of the following categories: black, brown, blonde, red, gray and other...
  24. Physics

    Why do seat belts reduce the likelihood of injury in an automobile accident? Why do airbags? Express your answers in terms of the physics principles we've been learning this week?
  25. Physics

    When you swim across a river does the time it takes to get to the other side depend on the rate of flow of the water? Defend your answer.
  26. Math

    At the movies a bag of popcorn cost $3.50 a bottle of mineral water cost $2.75. IfMadeline has $18 I don’t but only two bottles of water, how many bags of popcorn can she buy at the most?
  27. Algebra II

    (the “/“ is division)
  28. Algebra II

    no parenthesis are needed. 5x+7=8 I would take the 7 and subtract is from 7 and 8 the new equation would look like this 5x= 1 then you would take 5/5 and 1/5 and then there’s your answer. I’m not the greatest at math but this is how I’d do it :)
  29. Science

    Calculate the kinetic energy of a 78kg sheep moving at 23m/s
  30. stats

    In a straight 3 lottery you choose a 3 digit number. A 3 digit number is chosen at random, If your number mataches you win $250. 1. There are two outcimes in the sample space($250,$0) using these write down a probability model for the straigjt pick three lottery. SOMEONE ...
  31. stats

    In a straight 3 lottery you choose a 3 digit number. A 3 digit number is chosen at random, If your number mataches you win $250. 1. How many diifrent three digit numbers are there? I thought you would do 3^3 but that only equaled 27 so i assumed im wrong 2. what is the ...
  32. Science

    Why was the tert. Butyl chloride finally washed with water,?
  33. Chemistry

    Calculate the molar concentration of a solution of nitric acid if 20.00 mL of the acid requires12.63 mL of 0.155 M NaOH to reach the equivalence point.
  34. Calculus (Need Help) - Rectilinear Motion

    Rectilinear Motion: *Need help with these three!* Directions: The position function of a particle moving on a coordinate line is given by the following eq'ns, where s is in feet and t is in sec. Describe the motion of the particle for any time. Make a DIAGRAM of the motion...
  35. CHEM HELP! (Check work)

    H3CA is a vitally important intemediate in the metabolism of carbohydrates. The compound is widely distributed in plant and animal tissues and fluids. H3CA is a tiprotric acid, ie, it requires three moles of NaOH to fully neutralize one mole of H3CA. a.) If it requires 19.41 ...
  36. Chem HELP( CHECK)!

    H3CA is a vitally important intemediate in the metabolism of carbohydrates. The compound is widely distributed in plant and animal tissues and fluids. H3CA is a tiprotric acid, ie, it requires three moles of NaOH to fully neutralize one mole of H3CA. a.) If it requires 19.41 ...
  37. Chem

    For part A. is that just extra info? Molar mass is simply mass of H *3 plus the mass of Calcium which ='s 43.104 g/mol H3CA.. For part B... given the percent composition, I did 37.51 g/ 12.0111 g/mol= 3.123 mol C 4.20 g/ 1.0079 g/mol= 4.17 mol H 58.29 g/ 15.999 = 3.643 mol...
  38. Chem

    H3CA is a vitally important intemediate in the metabolism of carbohydrates. The compound is widely distributed in plant and animal tissues and fluids. H3CA is a tiprotric acid, ie, it requires three moles of NaOH to fully neutralize one mole of H3CA. a.) If it requires 19.41 ...
  39. Math helpppppp

    Danni walked 2 miles, and Wendi walked 10,500 feet. Which statement is accurate?
  40. geometry

    PQ has endpoints at P (-2,3) and Q (4,1). The center of dilation is (-1,4) and the scale factor is 2. What are the coordinates of the endpoints of P'Q'?
  41. geometry

    ?DEF has vertices D (2,2), E (-2,-1), and F (-3,5). Complete the following charts indicating the location of ?D?E?F? and ?D??E??F?? ?DEF is reflected in the y-axis. Then it is translated along the vector ?3,?5?. D (2,2) D`E`F` (?,?), D"E"F" (?,?) E (-2,1) D`E`F...
  42. geometry

    A kayaker sees a bear in the distance. If the kayaker is 48 yards lower than the bear and the angle of elevation from the kayaker to the bear is 15°, find the horizontal distance from the kayaker to the bear. please help
  43. geometry

    A news helicopter 60 meters above the road spotted two accidents. The angles of depression are 10.2° and 8.7°. How are apart are the accidents? (The accidents are in the same general direction from the helicopter.) please help. i'm not sure what i am doing wrong!
  44. geometry

    A snow tubing lane is 200 yards with a vertical drop of 45 yards. What is the angle of depression? please help
  45. geometry

    Two small fires are spotted by a ranger from a fire tower 60 feet above ground. The angles of depressions re 11.6° and 9.4°. How far apart are the fires? (The fires are in the same general direction from the tower.) please help!!
  46. geometry

    Two boats are spotted by a Coast Guard helicopter. The helicopter is 150 yards above the water. The angles of depression are 12.5° and 15.3°. How far apart are the boats? (The boats are in the same general direction from the helicopter.) Pls help i have 7 of these ...
  47. geometry

    Ray AD is the angle bisector of angle ABC. m?ABC is 168°What is the measure of ?DBC?
  48. English- thesis statements

    I am writing a synthesis essay over multiple different sources. I have started writing my essay about how unhealthy relationships are often hard to spot and about how we often tell ourselves everything is fine and make up a vision in our heads of what we think the relationship...
  49. Math

    Create a Raptor Flowchart that calculates the amount a person would earn over a period of time if his or her salary were five cents the first day, ten cents the second day, and so on doubling each day. Your program should: 1. Request the number of days. 2. Display a table ...
  50. computer programming

    Create a Raptor Flowchart that calculates the amount a person would earn over a period of time if his or her salary were five cents the first day, ten cents the second day, and so on doubling each day. Your program should: 1. Request the number of days. 2. Display a table ...
  51. chemistry

    You are given a 500 mL stock solution of 10%CaCl2 and are askes to prepare a 50 mL solution of .5% CaCl2. How would you prepare it? Please show work
  52. SS

    i think it is B, but you might wait for someone to verify
  53. Languages, Spanish

    And yes, I meant "Dining" Thank you:)
  54. Languages, Spanish

    ok, thank you!
  55. Languages, Spanish

    you are dinning at a restaurant in Argentina at 9:30 n the evening.(Dinner) What meal are you most likely eating? A) el almuerzo (This is Lunch, so not this one) B) La Sena *** C) El desayuno Thank you!
  56. Math

    You are multiplying it by too, hope that helps
  57. math

    Find each product mentally show the steps you use 9 x 44
  58. Math

    ABCD is a kite with AD=AB Angle A is 116 degrees Angle B is 2x degrees Angle D is (5x-147) degrees Find the smallest angle of the kite
  59. math

    You need to divide 3600 divided by 8 it's thesimple answer.
  60. English

    Ok, thatis just mean. If you think that there is a time when ANYONE'S feelings need to be hurt then you are very wrong on that one because everyone deserves kindness even when they make mistakes.
  61. English

    Not trying to make you feel bad but that actually hurt my feelings...
  62. English

    I was close XD You're welcome. I try my best to help on here. This website is awesome!
  63. English

    I think the answer is the second sentance: Barking is a gerund describing the dog. I had to look up what gerund meant first though.
  64. 5th grade Science

    Thank you Ms. Sue! Your help is very much appreciated!
  65. 5th grade Science

    How does water tempurature give a clue about what ocean layer it belongs to? (Please help!)
  66. Social Studies 7th Grade

    No it is not better. You're the one that's wrong o this one because nobody's feelings should ever be hurt on purpose.
  67. Social Studies 7th Grade

    That's actually hurting my feelings you know.
  68. Social Studies 7th Grade

    I would personaly go with 3 because there are some people who speak even over 100 languages. But you choose what you think is correct. It's not right for someone to make decisions for you, because you have your own freedom.
  69. Social studies

    What helped caravels sail against the wind?
  70. Physics

    A student holds a bike wheel and starts it spinning with an initial angular speed of 7.0 rotations per second. The wheel is subject to some friction, so it gradually slows down. In the 10-s period following the inital spin, the bike wheel undergoes 60.0 complete rotations. ...
  71. Physics

    A uniform disk of radius 0.485 m and unknown mass is constrained to rotate about a perpendicular axis through its center. A ring with same mass as the disk\'s is attached around the disk\'s rim. A tangential force of 0.247 N applied at the rim causes an angular ...
  72. Physics

    A flywheel in the form of a uniformly thick disk of radius 1.48 m, has a mass of 43.6 kg and spins counterclockwise at 303 rpm. Calculate the constant torque required to stop it in 2.50 min.
  73. Physics

    A soccer play kicks the ball toward a goal that is 29m in front of him. The ball leaves his foot at a speed of 19m/s and at an angle of 32degrees above the ground. Find the speed of the ball when the goalie catches it in front of the net. my work: vxi=16.1 vxf=16.1 ax=0
  74. Chem

    Calculate the value of work, w, for the following system if 26.7 g of NaN3 reacts completely at 1.00 atm and 22 °C.
  75. Math

    If my input is 0 and output is blank then my input is 1 and output 2 then input 3 output 22 input 4 output 32 how do i find the first output that is blank?
  76. Physics

    Three different masses are attached to a spring which hangs down vertically from the ceiling. A metric ruler hangs from the ceiling next to the spring and measures how far from the ceiling the sping hangs. When a 110 N weight is attached to the spring, the spring reaches the ...
  77. Physics

    The objects listed below are placed at the top of a ramp, and roll down to the bottom without slipping. Assuming that there is no air resistance, rank them in order from fastest average rolling speed to slowest. Basketball Bowling Ball Penny Wedding Ring
  78. Physics

    A sphere of radius 2.84 cm and a cylinder of radius 8.97 cm are rolling without slipping along the same floor. The two objects have the same mass. If they are to have the same total kinetic energy, what should the ratio of the sphere\'s angular speed to the cylinder\'s...
  79. Physics

    A propeller is modeled as five identical uniform rods extending radially from its axis. The length and mass of each rod are 0.721 m and 2.55 kg, respectively. When the propellor rotates at 561 rpm (revolutions per minute), what is its rotational kinetic energy?
  80. Physics

    A baseball pitcher throws the ball in a motion where there is rotation of the forearm about the elbow joint as well as other movements. If the linear velocity of the ball relative to the elbow joint is 19.7 m / s at a distance of 0.470 m from the joint and the moment of ...
  81. Physics

    A bicyclist is coasting straight down a hill at a constant speed. The mass of the rider and bicycle is 80 kg and the hill is inclines at 15 degrees with respect to the horizontal. Air resistance opposes the motion of the cyclist. Later, the bicyclist climbs the same hill at ...
  82. Physics

    An 8 kg bowling ball creates air resistance according to F(air)=2.14v. The bowling ball is rolled off the top of the sears tower. a) Calculate the acceleration (magnitude and direction at 1) The top of the building____ 2)when the ball reaches 5.6 m/s_____ b) What is the ...
  83. Physics

    Using a simply pulley/rope system, a crewman on an Arctic expedition is trying to lower a 6.17-kg crate to the bottom of a steep ravine of height 23.8 meters. The 55.6-kg crewman is walking along holding the rope, being careful to lower the crate at a constant speed of 1.50 m/...
  84. Physics

    As a hiker in Glacier National Park, you are looking for a way to keep the bears from getting at your supply of food. You find a campground that is near an outcropping of ice from one of the glaciers. Part of the ice outcropping forms a 31.5° slope up to a vertical cliff. ...
  85. Physics

    As a hiker in Glacier National Park, you are looking for a way to keep the bears from getting at your supply of food. You find a campground that is near an outcropping of ice from one of the glaciers. Part of the ice outcropping forms a 31.5° slope up to a vertical cliff. ...
  86. Physics

    Using a simply pulley/rope system, a crewman on an Arctic expedition is trying to lower a 6.17-kg crate to the bottom of a steep ravine of height 23.8 meters. The 55.6-kg crewman is walking along holding the rope, being careful to lower the crate at a constant speed of 1.50 m/...
  87. Us history

    D) Avoiding it by smuggling molasses
  88. Chemistry

    Write the formulas of the compounds formed by NH4+ with the following anions: NO3−, HCO3−, SO42−, HPO42−. Express your answers as chemical formulas separated by commas. Use the given order of anions.
  89. Physics

    Pool players often pride themselves on their ability to impart a large speed to a pool ball. In the sport of billiards, event organizers often remove one of the rails on a pool table to allow players to measure the speed of their break shots (the opening shot of a game in ...
  90. Physics

    A soldier is tasked with measuring the muzzle velocity of a new rifle. Knowing the principles of projectile motion, he decides to perform a simple experiment at the indoor firing range. The soldier hangs a target a distance of d = 104 m from the end of the barrel. The rifle is...
  91. Physics

    ool players often pride themselves on their ability to impart a large speed to a pool ball. In the sport of billiards, event organizers often remove one of the rails on a pool table to allow players to measure the speed of their break shots (the opening shot of a game in which...
  92. Physics .. hard problem

    An overly eager physics student wants to confirm that the acceleration of gravity is ag=9.8 m/s^2. To check this, the student steps off the roof of the Sears Tower (height at the sky deck 427m). The rocketeer (who arrived five seconds after the student stepped off) uses a ...
  93. Physics

    A 2.83-kg object is thrown vertically upward from the surface of Mars, where the acceleration due to gravity is g1 = 3.71 m/s2. The initial velocity is v1, and the object reaches a maximum height of y1. What is the maximum height, y2, if the object is thrown with a speed of v2...
  94. Physics

    On the Moon, the acceleration due to gravity is 1.62 m/s2. How far would a 13 g rock fall from rest in 5.5 seconds if the only force acting on it was the gravitational force due to the Moon?
  95. Physics

    While standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 6.11 m/s. The stone subsequently falls to the ground, which is 12.7 m below the point where the stone leaves your hand. At what speed does the stone impact the ground? How ...
  96. Social study

    2 down another name for mississippians
  97. Chemistry

    For the following reaction, how many kJ of heat are produceed in forming 225.0 g of NO? 4 NH3 + 5 O2 → 4 NO + 6 H2O ΔHrxn = -906 kJ/mole
  98. Government

    Thank you for your help
  99. Government

    1. Not all resolutions need presidential approval, as do bills becoming laws. True False I think the answer is true because there are certain resolutions like joint and concurrent resolutions and joint require presidential approval while concurrent does not. Is my answer ...
  100. Science : Physics

    Will an object accelerate if the forces are balanced? Why or why not? I know that the answer is that it will not accelerate but I'm having a difficult time explaining why.
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