1. bio

    A large population of laboratory animals has been bred randomly for a number of generations. There was an interesting revelation. The scientists noted that there was neither an increase nor a decrease in the frequency of animals displaying the recessive
  2. economic

    Draw a production possibilities curve for a hypothetical economy producing capital good and consumer goods. Suppose a major technological breakthrough occurs I the capital goods industry and the new technology is widely adopted only in this industry. Draw
  3. Math

    Ellen has a bag with 3 red marbles and 2 blue marbles in it. She is going to randomly draw a marble from the bag 300300300 times, putting the marble back in the bag after each draw.
  4. Geometry

    Which of the following is true if a pentagon tessellates a plane? a. A pentagon never tessellates a plane b. All of its sides must be the same length c. It must be a regular pentagon d. It has one pair of parallel slides
  5. Grammar

    Exercise C: (1) Select one of the subjects below. (2) Make a list of ideas to support your subject. (3) Decide what you main points should be and group the other ideas under them. (4) Prepare the outline according to the proper form. Make sure your points
  6. Science

    A cyclist of total mass 85 kg maintains a constant speed up an inclined plane. the plane is inclined at 20 degrees to the horizontal. with frictional force of 120 N. the cyclist covers a distance of 50 m along the inclined plane in 20 s. 1. Calculate the
  7. Caculas

    (Airplane & Radar) An airplane is flying (horizontally) at the height of 6 km on a flight path that will take it directly over a radar tracking station (on ground). If the distance D between the plane and the radar is decreasing at a rate of 300 km/hr,
  8. physics

    A book whose mass is 2kg is projected up a long 37degree inclined plane with initial velocity, 24m/s. The coefficient of kinetic friction between the plane and the book is 0.25. Use g= 10m/s^2. a) Find friction force. b) How much time does it take before
  9. College Physic

    I am stuck on this question. Any help will be greatly appreciated! A 0.082 kg solid cylinder with a radius of 1.90 cm, is placed at the top of a 30º inclined plane of height 29.5 cm. If the inclined plane is not frictionless, and the cylinder does roll,
  10. physics

    A 2 kg mass resting on a smooth plane inclined 20 degrees to the horizontal. A cord which is parallel to the plane passes over a massless, frictionless pulley to a 4 kg mass which will drop vertically when released. What will be the speed of the 4 kg mass
  11. physics

    A plane flies directly from city A to B, which are separated by 2300mi. From A to B, the place flies into a 65mi/hr headwind. ON the return trip from A to B, the wind velocity is unchanged. The trip from B to A takes 44 min less than the trip from A to B.
  12. Probability

    placed marbles in a bag. 6 of the marbles are red and 4 of them are yellow. reach into the bag and remove two marbles. a.) i.) What is the probability that both of the marbes you draw out are red? ii.) What is the probability that both of the marbles that
  13. Maths

    Hi, need a bit of help on this one. A straight line passes through the points (4,3) and (10,0), I need to write down the equation of the line in the form y=mx+c, I have tried but I cant seem to get the second coordinates to satisfy the equation. Here is
  14. Phil103 Informal Logic

    . If P is false, and Q is false, the truth-value of "P ¡êQ" is (Points : 1) false. true. Cannot be determined. All of the above. 2. What is the truth value of the sentence "P & ~ P"? (Points : 1) True False Cannot be determined Not a sentence 3. If P is
  15. Math

    PLEASE HELP!!! In a basketball free-throw shooting contest, the points made by Sam and Wilbur were in the ratio 7:9. Wilbur made 6 more points than Sam. find the number of points made by each...... I'm so confused
  16. Math

    PLEASE HELP!!! In a basketball free-throw shooting contest, the points made by Sam and Wilbur were in the ratio 7:9. Wilbur made 6 more points than Sam. find the number of points made by each...... I'm so confused
  17. Math

    Alan, Gil, and Deb's point score in a video game was in a ratio of 2:3:4. Deb scored 114,400 points. A) how many points did Gil score? B) how many points did all of them score? i don't know how to do this would you please help me, thank you
  18. Trig

    From an observation tower that overlooks a runway, the angles of depression of point A, on one side of the runway, and point B, on the oppisite side of the runway are 6 degrees and 13 degreess respectivel. The points and the tower are in the same vertical
  19. consumer math

    Your parents are buying a house for $180,000. They have a good credit rating, are making a 20% down payment, and expect to pay $1,500/month. The interest rate for the motrgage is 4%. What must their realized income be before each month and how much
  20. Math

    From an observation tower that overlooks a runway, the angles of depression of point A, on one side of the runway, and point B, on the opposite side of the runway are, and , respectively. The points and the tower are in the same vertical plane and the
  21. Math

    Rita earned 45 points on a test.She lost 8 points, earned 53 points, then lost 6 more points. What is Rita's final score on the test?
  22. Precalculus

    Number of possible turning points in the following equation f(x)=x^2(x-3)(x+4) are there 2 turning points or three turning points on the graph
  23. Physics

    A rescue plane spots a person floating in a lifeboat 55 m directly below and releases an emergency kit with a parachute. The package descends with a constant vertical acceleration of 6.91 m/s. If the horizontal speed of the plane was 70.6 m/s, how far is
  24. physics

    2. A wooden block slides directly down an inclined plane, at a constant velocity of 6 m/s. a. How large is the coefficient of kinetic friction if the plane makes an angle of 25º with the horizontal? 0.466 b. If the angle of incline is changed to 10º, how
  25. Geometry

    Ok, this is going to be confusing to write, but I'll do my best... <=angle T=perpendicular to (when upside down) (Write proof in two-column form) Given: <JMK=<LMK; segment MK T plane P Prove: segment JK = segment LK There is a plane (P) and there
  26. math

    in lotto draw balls 1-50 mixed together. machine randomly selects numbers 13,11,7,27,41. is the 6th number drown A. more like to be odd than even b. more likely to be even than odd c. equally likely i could not decide, as long as there even and odd
  27. Physics II

    two perpendicular, long, straight wires, both of which lie in the plane of the paper. The current in each of the wires is I = 4.5 A. In the drawing dH = 0.13 m and dV = 0.48 m. Find the magnitudes of the net magnetic fields at points A and B. The drawing
  28. 12th grade

    prove that normal to plane containing 3 points whose position vectors are a vector,b vector,c vectorlies in direction addition of cross product of vectors b and c and cross product of vectors c and a and cross product of vectors a and b
  29. physics

    A small plane mass 600 kg lifts off from the runway at a speed of 145 Km/Kr. 2 Minutes later, the plane has reached an altitude of 300 meters and its airspeed has dropped to 90 Km/Hr. Assume the power output of the engine was constant during this time.
  30. Mathematics

    The points scored in a basketball game by the individual players of two teams, High Rangers and Rising Stars, is recorded during the game. After the game, the manager found that the range for the High Rangers is 20 points and the range for the Rising Stars
  31. math

    A plane leaves hamilton and flies due east 75 km at the same time a second plane flies in a direction of 40degress southeast for 120 km how far apart are the planes when they reach their destination. I say the calculation is 75^2+120^2-2(75)(120)cos40 the
  32. physics

    A 3 kg mass attached to a string 6 m long is to be swung in a circular at a constant speed making one complete revolution in 1.25 s. Determine the value that the breaking strain that the string must not exceed if the string is not to break when the
  33. PHYSICS

    A circular wire loop of mass and radius carries a current . It hangs from a hinge that allows it to swing in the direction perpendicular to the plane of the loop. A uniform magnetic field exists everywhere in space pointing upwards. What angle does the
  34. MATH

    A plane flying with a constant speed of 24 km/min passes over a ground radar station at an altitude of 4 km and climbs at an angle of 45 degrees. At what rate, in km/min, is the distance from the plane to the radar station increasing 2 minutes later? Rate
  35. algebra

    this is the hardest problem people said it was the hardest andf they can not solve it can anyone solve this please it is hard In a basketball game, Garrett and Logan scored a total of 19 points. Logan and Ray scored a total of 14 points. Logan scored as
  36. math

    a plane travels 1020 miles from new york city to minneapolis in 3.3 hours. the return trip takes 2.75 hours. how fast is the plane flying in miles per hour during the return flight?
  37. Geometry

    A plane flying 16 degrees west of north at 289mph is flying in air which is moving 32mph at due west. Find the resulting speed and direction of the plane. (Step by step please!)
  38. Physics

    A supply plane needs to drop a package of food to scientists working on a glacier in Greenland. The plane flies 150m above the glacier at a speed of 110m/s. How far short of the target should it drop the package?
  39. Physics

    A supply plane needs to drop a package of food to scientists working on a glacier in Greenland. The plane flies 50.0m above the glacier at a speed of 100m/s . How far short of the target should it drop the package?
  40. phics

    In an experiment on motion, a cart weighing 240 N was pulled up an inclined plane. Which of the following would be the expected reading on the spring scale as the cart is pulled up an inclined plane set upon two books
  41. PHYSICS math

    2. An airplane is 50,000 m above an observer and 2.1 km to the west of them and 1.5 km to the north of you. Determine the angle to the plane in the x – y axis and the total distance to the plane from you. Choose the x-axis east, y axis north, and z axis
  42. physics

    A supply plane needs to drop a package of food to scientists working on a glacier in Greenland. The plane flies 92 m above the glacier at a speed of 135 m/s. How far short of the target should it drop the package?
  43. Physics science - forces

    A jet plane lands on a runway and decelerate so to rest. What can you say about the direction of the resultant force on the ane as it decelerates? What can yu say about the resultant force acting on the plane as it has come to rest? Many thanks.
  44. math help please

    a plane intersects a square pyramid perpendicular to its base but not through a vertex.The plane forms a cross section what is the shape of the cross section a)trapezoid b)triangle c)square d)rectangle
  45. Pythagoras

    An aeroplane flies 520 km north 45 degrees west then 387 km east . it is then noted that the plane is due north of its starting point. how far is the plane from its starting point? How do I work it out?
  46. math

    a plane intersects a square pyramid perpendicular to its base but not through a vertex.The plane forms a cross section what is the shape of the cross section a)trapezoid b)triangle c)square d)rectangle
  47. Math 17

    two airways cross each other at an angle of 49 degrees. at a certain instant, the american airlines plane is 32 miles from the crossing, while the british airways plane is 76 miles from the crossing. what is the distance between the two planes at this ins
  48. Math

    two airways cross each other at an angle of 49 degrees. at a certain instant, the american airlines plane is 32 miles from the crossing, while the british airways plane is 76 miles from the crossing. what is the distance between the two planes at this ins
  49. Algebra

    Consider the two inequalities 2x - 4 < y and y < -2/3x + 2. (b) Graph the region of the plane that satisifies either inequality, or both inequalities. (c) Graph the region of the plane that satisifies either inequality, but NOT both. What I don't get
  50. Geometry

    A circle \Gamma cuts the sides of a equilateral triangle ABC at 6 distinct points. Specifically, \Gamma intersects AB at points D and E such that A, D, E, B lie in order. \Gamma intersects BC at points F and G such that B, F, G, C lie in order. \Gamma
  51. Physical science

    consider a flat square coil with 10 turns. The coil is 1m wide on each side and has a magnetic field of 1,0T passing through it. The plane of the coil is perpendicular to the magnetic field: the field points out of the page. Use faraday's law to calculate
  52. science

    build a circuit containing two resistors that are in series with each other. This circuit also contains two light bulbs that are in parallel to each other, but are in series to the resistors. Connected this to two batteries that are in series with each
  53. Government

    I am a teacher and have a special education student in one of my inclusion government classes. The student likes to draw and drawing seems to encourage him. My question is that I would like to find a government project that would teach government and yet
  54. geometry

    How to draw line segment CF and to draw a ray CD perpendicular to line segment CF.
  55. chemisrty

    hello how would i draw a monomer CH2-CHCH=CH2 I have to draw three monomer units can anyone help
  56. math

    There are 20 10% off cards, 10 15% off cards, 6 20% off cards and 4 50% off cards. What is the probability that a person will draw a 50% off card on the third draw?
  57. physics

    A particle C can move along a slide placed in a vertical plane. Points A and B are at the same horizontal level. Determine with respect to B the point where the velocity of C is zero for the first time in the three following cases: a) C is released from A
  58. physic

    An aeroplane is heading 20 degree North of East,flying at 200km/hr relative to the air. Simultaneously the wind carriers the plane 10degree East of South at speed of 60.0km/hr. (a) find the velocity of the relative to the ground.(you may solve it
  59. THEORY OF MACHINE

    The principal stresses at a certain point in a strained material are 150 MPa and 48 Mpa both tensile. Find normal and tangential stresses on a plane inclined at 20 degree with the major principal plane.
  60. Math

    A spy plane, whose average speed in still air is 250 mph, departs with a 40 mph tailwind and returns to the same airport flying into the same wind. How far from the airport can the plane fly if it has enough fuel to fly for 5 hours?
  61. physics

    A 2.5-kg block slides down a 17.0° inclined plane with constant acceleration. The block starts from rest at the top. At the bottom its velocity reaches 0.70 m/s. The length of the incline is 1.7 m. What is the acceleration of the block? What is the
  62. math

    Celina wants to draw the exact square she saw in a workbook. The list below shows the tools she has. string, pencil, calculator, compass, straightedge, tape Which tools in the list are not required for Celina to draw the square?
  63. Social Studies

    I have to define the word Kinship, come up with a couple synonyms, use it in a sentence, and then draw a picture to resemble it. For the definition I got: the relationship amoung family members For the synonyms I got: bond, family, relation I need help
  64. physics

    An airplane is 50,000 m above an observer and 2.1 km to the west of them and 1.5 km to the north of you. Determine the angle to the plane in the x – y axis and the total distance to the plane from you. Choose the x-axis east, y axis north, and z axis up.
  65. Science

    A plane flies 118 km at 15 degrees south of east and then flies 118 km at 35 degrees west of north. Find the magnitude and direction of the total displacement of the plane?
  66. physics

    An airplane is 5,000 m above an observer and 2.1 km to the west of them and 1.5 km to the north of you. Determine the angle to the plane in the x – y axis and the total distance to the plane from you. Choose the x-axis east, y axis north, and z axis up.
  67. Trigonometry

    Two observers who are 2 miles apart on a horizontal plane observe a balloon in a same vertical plane with themselves. the angles of elevation are 50 degrees and 65 degrees respectively. find the height of the balloon,(a)if it is between the observers;(b)if
  68. Physics

    An airplane is 5,000 m above an observer and 2.1 km to the west of them and 1.5 km to the north of you. Determine the angle to the plane in the x – y axis and the total distance to the plane from you. Choose the x-axis east, y axis north, and z axis up.
  69. science

    Suppose you are standing on the sidewalk. Describe the direction of your motion relative to the car and plane. answer my motion would seem slower than the car but faster than the plane. I know there has to be a better answer, any suggestions?? Thank you.
  70. music

    what are singing points? As a music teacher, I've never heard of them. How are they used in the homework? my homework task was to find out 2 different singing points and i can't find it anywhere!! That doesn't make any sense. Are you supposed to be
  71. Math

    Can someone please check my work? Write the slope-intercept (y = mx +b) form of the equation from the information given. 1. Slope = ½ and b = -3 Y=1/2-3 2. Slope equals 2 and the line goes through the point (-1, 3) Y=2x+5 3. The line goes through the
  72. Math

    In a basketball free-throw shooting contest, the points made by Sam and Wilbur were in the ratio 7:9. Wilbur made 6 more points than Sam. find the number of points made by each.
  73. Algebra 1

    Your math teacher tells you that next week's test is worth 100 points and contains 38 problems. Each problem is worth either 5 points or 2 points. Because you are studying systems of linear equations, your teacher says that for extra credit you can figure
  74. Math

    Sanjay takes a pre-ap multiple choice test of 25 questions in which he earns 10 points for every correct answer, but loses 2 points for every incorrect answer. Sanjay answered all 25 questions and scored 202 points. How many did he answer correctly? how
  75. probability

    A game of darts involves throwing two darts at the board. Hitting a blue region with a dart scores 1 point; a red region, 2 points, a green region, 3 points, and the orange region, 5 points. Assume that no skill is involved. What is the probability, stated
  76. physics

    an aeroplane touches down on the landing strip at an airpot.Assume that the speed at which the plane touches down is 100m.s and that the maximum length of the runway is 1000m.calculate the average acceleration that the plane must stop within the length of
  77. Math

    A weight of 150 pounds is placed on a smooth plane surface which makes an angle of 35 degree with the horizontal. The weight is held by a string parallel to the surface and fastened at the top of the plane. Find the pull on the string.
  78. Calculus

    A plane flying with a constant speed of 4 km/min passes over a ground radar station at an altitude of 5 km and climbs at an angle of 45 degrees. At what rate, in km/min is the distance from the plane to the radar station increasing 4 minutes later?
  79. physics

    Consider a plane pulling up from a downward dive. If the plane has a speed of 85 m/s at the bottom of the dive and the radius of curvature of the dive is 240 m, what is the normal force on a 78 kg pilot at the bottom of the dive? A. 770 N B. 790 N C. 1600
  80. college physics

    The electric field near the surface of a uniformly charged conducting plane can be determined by Gauss's law. If the plane is a square of sides 11.5 cm and carries a charge of 22.0 nC (that's nanocoulombs), what is the magnitude of the electric field near
  81. Calculus

    A plane flying with a constant speed of 24 km/min passes over a ground radar station at an altitude of 8 km and climbs at an angle of 20 degrees. At what rate, in km/min, is the distance from the plane to the radar station increasing 2 minutes later?
  82. physics

    an aeroplane touches down on the landing strip at an airpot.Assume that the speed at which the plane touches down is 100m.s and that the maximum length of the runway is 1000m.calculate the average acceleration that the plane must stop within the length of
  83. calculus

    A plane flying with a constant speed of 23 km/min passes over a ground radar station at an altitude of 5 km and climbs at an angle of 35 degrees. At what rate, in km/min is the distance from the plane to the radar station increasing 7 minutes later?
  84. math

    A plane flying with a constant speed of 14 km/min passes over a ground radar station at an altitude of 7 km and climbs at an angle of 35 degrees. At what rate, in km/min, is the distance from the plane to the radar station increasing 5 minutes later?
  85. Calculus (Volume of Solids)

    A solid has, as its base, the circular region in the xy-plane bounded by the graph of x^2 + y^2 = 4. Find the volume of the solid if every cross section by a plane perpendicular to the x-axis is a quarter circle with one of its radii in the base.
  86. Physics

    Calculate the formula for coefficient of kinetic friction in an inclined plane with a pulley and two masses coonected by a rope. You can only use the weight of the two masses, the height where the second object is and the distance that the first object
  87. Chemistry

    2. Aluminum metal reacts with zinc(II) ion in an aqueous solution by the following half-cell reactions: Al(s) → Al3+(aq) + 3e− Zn2+(aq) + 2e− → Zn(s) a. Predict the potential of the cell under standard conditions. (4 points) b.
  88. Psychological Statistics

    Assume that GRE scores approximate a normal curve and have mean of 500 points and a standard deviation of 100. What proportion of the normal curve would correspond to each of the following situations? 1) A score more than 50 points above the mean? 2) A
  89. algebra 1

    In a basketball game you score 2 points for a field goal and 1 point for a free throw. Suppose that you have scored at least 5 points a game and have a season high of 12 points a game. How many field goals and free throws could you have made in one game?
  90. research methods

    a bag of 100 marbles contains 0 blue, 25 green, 25 mixed,and 20 clear. what is the probality of selecting a blue? ablue and green? a marble that is not clear? ablue on the first draw and a clearon the second draw?
  91. Problem Solving: Draw Picture

    Maggie is planting bushes every 1.5 feet along the side of a fence. The fence is 22.5 feet long. Explain how Maggie can draw a picture to show where each bush is planted.
  92. 3rd grade

    use the grid. draw two different figures that each have a perimeter of 14. find each area. question 2. draw a figure with the given perimeter of 10 units and 22 units. question 3. explain why it would be important to know the area of a room that new
  93. Science

    I am doing a project Energy Transformation Illustration. I picked a gas stove for this project. I have to draw three thing to show its transformation. What I have to draw for first and second transition? Third is gas stove. Plz help.
  94. Chemistry

    I just need someone to check over my answers, I'm pretty confident in all of them! In which six-membered hydrocarbon rings are all of the C-C-C angles roughly the same, i.e., within 1o? Select ALL that apply. Question 1 options: A)cyclohexane B)cyclohexene
  95. statistics

    27. Consider the following hypothesis test. H0: µ = 15 Ha: µ ≠ 15 A sample of 10 gives a sample mean of 8.9 and population variance of 9. Consider the following data drawn from a normally distributed population: 4, 8, 12, 11, 14, 6, 12, 8, 9, 5,
  96. Algebra

    12. Determine if the following is a conjuction or disjunction. y + 4 < -1 or y + 2 > 8 (Points : 1) 13. State how you determined if the combination above was a conjunction or disjunction. (Points : 2) 14. Solve the problem. (Hint: You should have two
  97. Calulus

    Hi there I need help with one of the problem from my homework package. This week for my calculus class, we were learning how to do partial derivative and finding the tangent of the plane. So I do not know how to approach this problem. Please help me by how
  98. Engineering science

    2. A wooden block slides directly down an inclined plane, at a constant velocity of 6 m/s. a. How large is the coefficient of kinetic friction if the plane makes an angle of 25 degrees with the horizontal? b. If the angle of incline is changed to 10º, how
  99. physics

    A jet plane takes about 56 s to go from rest to the takeoff speed of 120 mph (miles per hour). What is the average horizontal force that the seat exerts on the back of a 60-kg passenger during takeoff? First make sure that each of the values are in SI
  100. PHYSICS

    Which machines has more mechanical advantage pulley or incline plane? I asked this question before but did not quite understand the answers that were given to me. I think that the incline plane has more mechanical advantage in a friction less environment.