1. Physics

    A rocket lifts off its launching pas with a vertical velocity of 20. m/s and a horizontal velocity of 60. m/s. What are the magnitude and direction of its resultant velocity? I drew the x and Y axis. 20 m/s on the Y axis and 30 m/s on the X axis. I know I

    asked by Aya on October 14, 2014
  2. Math

    A dog kennel owner needs to build a dog run (rectangular area) adjacent to a kennel cage (so that it is in the shape of a rectangle, but only three sides need to be built- one long side is already there). The short side walls of the run are to be cinder

    asked by Anonymous on March 26, 2013
  3. earth science am i right?

    am i right 19. According to the law of __________, only a worldwide flood with its vast complex of sediment-saturated currents would produce horizontal superimposed layers of materials, thus forming a great series of sedimentary strata formed in various

    asked by cassii on August 20, 2006
  4. physics

    A metal can containing condensed mushroom soup has a mass of 269 g, a height of 14.7 cm, and a diameter of 6.79 cm. It is placed at rest on its side at the top of a 3.34 m long incline that is at an angle of 22.4 degrees to the horizontal and is then

    asked by Emily on November 1, 2009
  5. physics 12

    im stuck i have no clue where to start, please help me i just know the givens and some claculations. question: kevin stands on he top of a buiulding and he throws an aboject up into the air at a velocity of 16.0m/s at an angle of 25 degrees to the

    asked by priya on August 8, 2010
  6. math-word problem

    A plane flies with a ground speed of 160 miles per hour if there is no wind. It travels 350 miles with a head wind and in the same time it takes to go 450 miles with a tail wind. Find the speed of the wind. I'm pretty bad with word problems, but this is

    asked by Jennifer on May 6, 2008
  7. Physics HELP

    1.If a particle moves in a plane so that its position is described by the functions x=A*cos(wT) and y=A*sin(wT), the particle is ( w-angular velocity, T-period) A) moving with constant speed along a circle B) moving with a varying speed along a circle

    asked by Kelly on May 13, 2007
  8. Physics

    A 75 kg man on a 39kg cart traveling at a speed of 2.3 m/s. He jumps off with zero horizontal speed realative to the ground. What is the resulting change in the speed of the cart? I tried using m1v1=m2v2 but that didn't work out since I was expose to get

    asked by Brian on January 30, 2007
  9. Physics

    A 350 N child is in a swing that is attached to a 7.50 m long rope. find the gravitational potential energy associated with the child relative to her lowest position when a) the ropes are horizontal, (b) the ropes make a 30 degree angle with the vertical,

    asked by B on September 30, 2012
  10. physics

    A non-uniform bar of weight W = 20.0 N is suspended at rest in a horizontal position by two massless cords. The angle phi between cord 2 and the vertical is equal to 32.5o. The bar has a length L = 6.5 m and the distance of its center of gravity from the

    asked by anonymus on September 12, 2018
  11. physics

    i need help it says a shopper in a supermarket pushes a cart with a force of 36N directed at an angle of 26 degrees downward from the horizontal. Find the work done by the shopper on the cart as the shopper moves along a 50.6m length aisle. answer in units

    asked by Claudia on November 2, 2008
  12. Physics

    You toss a ball from your window 8m above the groun. When the ball leaves your hand, ut is moving at 10m/s at an angle of 20 degree below the horizontal. How far horizontally from your window will the ball hit the ground? Ignore air resistance. Plz answer

    asked by Alisha on October 27, 2016
  13. Physics

    A 75 kg man on a 39kg cart traveling at a speed of 2.3 m/s. He jumps off with zero horizontal speed realative to the ground. What is the resulting change in the speed of the cart? I tried using m1v1=m2v2 but that didn't work out since I was expose to get

    asked by Jamie on January 29, 2007
  14. Ap Physics

    a 70 kg object sits without sliding on a horizontal platform that rotates at a constant rate of one revolution every 6 seconds about a fixed vertical axis. The object moves on a circle of radius r=2m. If meu is now .4 what is the max distance from the

    asked by Emily Gutenber on December 16, 2010
  15. Physics

    In a Milliken type experiment, two horizontal parallel plates are 1.0 cm apart. A sphere of mass 2.2 x 10^(-13) kg remains stationary when the potential difference between the plates is 350V with the upper plate is negative. How much excess or deficit of

    asked by KnowsNothing on July 23, 2012
  16. Math

    A telephone is anchored to the ground by a long cable called a guy wire, at a point 5 meters from the base of the pole, the wire makes an angle of 72.5 degrees with the horizontal. What is the length of the guy wire? HELP ASAP! I forgot how to compute for

    asked by Sofia on October 15, 2012
  17. physics

    Two identical springs (neglect their masses) are used to “play catch” with a small block of mass 200 g (see the figure). Spring A is attached to the floor and compressed 10.0 cm with the mass on the end of it (loosely). Spring A is released from rest

    asked by Luis on July 3, 2011
  18. Physics

    (1)A battery drives 60c of charge in a circuit for 20s. Thecurrent in the circuit is?(2)What is the volume of a block of expanded polystyrene of 400g and density 16kg/m3?(3)The velocity of a toy car of mass 2kg increased from 5m/s to 10m/s in 2seconds.What

    asked by kingstone on March 19, 2013
  19. PHYSICS!

    A diver leaves a 3m board on a trajectory that takes her 2.5m above the board and then into the water a horizontal distance of 2.9m from the end of the board. At what speed did she leave the board? At what angle did she leave the board?

    asked by Helpless on September 19, 2012
  20. engineering

    Let’s suppose the message x(t) is an analog signal shown in the figure below. a) Draw the block diagrams of the system which converts the analog message signal x(t) to a pulse modulated signal. b) Draw the sampled signal with the sampling frequency

    asked by dioptas on June 6, 2013
  21. Physics

    The two vectors a and b have equal magnitudes(on an x-y plane vector a is 30 degrees from the x axis then vector b is 75 degrees from the head of vector a it is heading towards north west) of 10m A)find the x component of their vector sum r B)find the y

    asked by Jamie on October 2, 2006
  22. Physics help

    Fortune tellers use crystal balls to see the future. A fortune teller has a crystal ball with an index of refraction of 1.5 and diameter of 0.2 m. You sit on one side of the ball and the fortune teller sits on the other. She holds up a small red jewel on

    asked by SOmebody on May 23, 2013
  23. PHYSICS

    A circular loop of flexible iron wire has an initial circumference of 168cm , but its circumference is decreasing at a constant rate of 15.0cm/s due to a tangential pull on the wire. The loop is in a constant uniform magnetic field of magnitude 1.00T ,

    asked by sarah on September 8, 2012
  24. Physics

    if an obejct has an horizontal acceleration of -0.51 m/s squared and vertical acceleration of -7.683 m/s squared, what is the resultant acceleration?

    asked by Jack on October 15, 2009
  25. Economics

    The demand curve for a monopoly is: 1. the MR curve above the AVC curve. 2.above the MR curve. 3.the MR curve above the horizontal axis. 4. the entire MR curve.

    asked by Todd on March 30, 2017
  26. Math

    A ramp rises 5 feet and is 13 feet long. What horizontal distance h, in feet, does the ramp cover?

    asked by Nick on May 2, 2011
  27. physics

    Physics force of friction question a 63kg water skier is pulled across a lake by a rope that exerts a force of 3.2x10^2 and makes an angle 17 degrees above the horizontal. if the coefficient between the skies and the lake is 0.27 at what rate will the

    asked by jake on March 28, 2010
  28. Trigonometry

    A vertical pole 40 feet tall stands on a hillside that makes an angle of 17 degrees with the horizontal. Approximate the minimum length of cable that will reach the top of the pole from a point on the hillside 72 feet downhill from the base of the

    asked by Bailey on November 3, 2014
  29. physics101

    A uniform 7.1 m tall aluminum ladder is leaning against a frictionless vertical wall. The ladder has a weight of 272 N. The ladder slips when it makes a 57.0degrees angle with the horizontal floor. Determine the coefficient of static friction between the

    asked by physics on November 7, 2011
  30. physics

    A uniform 7.1 m tall aluminum ladder is leaning against a frictionless vertical wall. The ladder has a weight of 272 N. The ladder slips when it makes a 57.0degrees angle with the horizontal floor. Determine the coefficient of static friction between the

    asked by PHYSICS HELP!!!! on November 7, 2011
  31. physics

    (II) A grocery art with mass of 18 kg is pushed at constant speed along an aisle by a force F = 12 N. The applied force acts at a 20-degree angle to the horizontal. Find the work done by each of the forces on the cart if the aisle is 15 m long. Please help

    asked by pauleen on October 7, 2009
  32. Pre-Cal

    A drone 125 ft high sights a landing pad with an angle of depression of 15 degrees. what is the horizontal distance between the drone and the landing pad? I tried all the methods set it up multiple ways, and I'm at a loss. My teacher said the answer is

    asked by Anna on October 5, 2015
  33. physics

    A firefighter a distance d from a burning building directs a stream of water from a fire hose at angle θi above the horizontal as in the figure. If the initial speed of the stream is vi, at what height h does the water strike the building? (Use theta for

    asked by eric on February 18, 2011
  34. math

    a soccer ball is kicked from the ground. after travelling horizontal distance of 35m,it just pass over a 1.5m tall fence before hitting the ground 38m from where it was kicked. Determine the equationi of a quadratic function that can be used to model the

    asked by Tristan on January 20, 2013
  35. Trigonometry

    Two points, A and D, are in a horizontal line with the foot of a tower, CB, and on opposite sides. The distance between A and D is 535.4 feet while the angles of elevation of the top B are 12 degrees 46 minutes from A and 18 degrees 38 minutes from D. Let

    asked by Alivia on April 26, 2010
  36. Math

    A hot air balloon rising vertically is tracked by an observer located 4 miles from the life off point. At a certain moment, the angles between the observers line of sight and the horizontal is Pi/4 and it is changing at a rate of 0.1. How fast is the

    asked by Victoria on December 5, 2016
  37. physics

    A 4.00 kg mass and a 3.00 kg mass are attached to opposite ends of a thin 32.2 cm long horizontal rod. The system is rotating at angular speed omega = 4.70 rad/s about a vertical axle at the center of the rod. Determine the kinetic energy K of the system.

    asked by Anonymous on November 20, 2012
  38. Physics

    A uniform ladder of length L and mass m leans against a frictionless vertical wall, making an angle of 56° with the horizontal. The coefficient of static friction between the ladder and the ground is 0.36. If your mass is four times that of the ladder,

    asked by Ariana on November 19, 2012
  39. Physics

    Can someone please tell me the right answer to this problem. A troll on a 75m tall cliff throws a 35 m/s boulder at 35 degrees above the horizontal at a herd of sheep. What is the time of flight, the range and the maximum height for the boulder? I got the

    asked by Susan on December 11, 2008
  40. Physics

    Rosie (mass 41 kg) pushes a box with a horizontal force of 140 N (31.472 lb) at a speed 25 m/min. A. What is Rosie’s power output? Answer in units of W. B.What energy is produced by a 300 W lightbulb lit for 4.1 hours? Answer in units of J

    asked by Sam on February 29, 2016
  41. Physics

    A motor vessel tows a small dinghy by a rope which makes an angle of 20 degrees with the horizontal. If the tension in the rope is 15 kgf ;find a) the force which effectively pulls the dinghy forward. b)the force which lift its bows out of the water.

    asked by Asamoah on January 10, 2011
  42. projectiles

    two children ride bicycle towards each other with instant velocity of 20m/s and 10m/s. Each child releases a ball 6m above the ground with forward horizontal velocity of 40m/s relative to the bicycle. if the two balls collide in above the ground. what was

    asked by ridhi on April 29, 2012
  43. physics

    You tie a battery powered, fixed-frequency buzzer to the end of a string and swing it around in a large horizontal circle. Your friend stands well off to the right and listens to the tone. At which of the labeled locations will the buzzer be when your

    asked by silly on May 2, 2011
  44. trig

    A car drives 1000 feet on a road that is 8 degrees to the horizontal, as shown in the figure. The car weighs 3400 lb. Thus gravity acts straight down on the car with a constant force F=-3400j. Find the work done by the car in overcoming gravity?

    asked by Jonny on June 6, 2014
  45. physics 8b

    A piece of wire with mass per unit length 88 g/m runs horizontally at right angles to a horizontal magnetic field. A 6.5A current in the wire results in its being suspended against gravity. What is the magnetic field strength? Express your answer using two

    asked by help on September 16, 2011
  46. physics

    two children ride bicycle towards each other with instant velocity of 20m/s and 10m/s. Each child releases a ball 6m above the ground with forward horizontal velocity of 40m/s relative to the bicycle. if the two balls collide in above the ground. what was

    asked by ridhi on May 3, 2012
  47. Physics

    A charge of 28.0 nC is placed in a uniform electric field that is directed verticall upward and that has a magnitude of 4.00*10^4 N/C. What work is done by the electric force when the charge moves (a)0.450 m to the right (b) 0.670 m upward (c) 2.60 m at an

    asked by Harper on January 28, 2008
  48. Physics

    A golf ball is given an initial speed of 20 m/s and returns to ground level. Which launch angle above level ground results in the ball traveling the greatest horizontal distance? Neglect friction. 1. 60 degrees 2. 45 3. 30 4. 15 The answer is 45 but I was

    asked by Julie on June 15, 2011
  49. Physics

    I have a golf ballthat is hit for 0.20s at an angle to the horizontal and it hits the ground some distance away. Initial speed is 30m/s and angle of projection is 35. Calculate the time between when the ball was hit and when it first touched down. I think

    asked by Sam on October 7, 2010
  50. Pre-Algebra

    The houses on your street are numbered with odd numbers starting with 1 and ending with 201. How many house numbers contain at least one 7? a.)30 numbers b.)28 numbers c.)24 numbers d.)20 numbers 2.) If there are two tubas in the band, what is the total

    asked by Amaka on October 27, 2014
  51. Math

    What words have a horizontal line of symmetry when printed horizontally, and a vertical line of symmetry when printed vertically. The only word I have is HI.

    asked by Sara on February 5, 2010
  52. Physics

    An arrow is shot at ground level with an initial speed of 50.0 m/s at an angle of 25.0° above horizontal. What is its x-coordinate when the arrow is on the way up and its y coordinate is 5.00 m above the ground?

    asked by Jem on February 13, 2012
  53. Math

    What words have a horizontal line of symmetry when printed horizontally, and a vertical line of symmetry when printed vertically. The only word I have is HI.

    asked by Sara on February 4, 2010
  54. trigonometry

    A 36 ft. ladder is used to reach the top of 28ft. wall. If the ladder extends 2 ft. from the top of the wall, find its inclination to the horizontal.

    asked by Winsel on August 11, 2010
  55. physics

    A submarine dives from the water surface at an angle of 31° below the horizontal, following a straight path 75 m long. How far is the submarine then below the water surface?

    asked by fawaz on February 10, 2014
  56. physics

    A woman pushes a lawn mower with a con- stant force of 112 Newtons at an angle of 37 with respect to the horizontal. The lawn mower moves at a speed of 20 cm/sec. What is her power output? (1 hp = 746 Watts) 1. 0.040 hp 2. 0.024 hp 3. 0.034 hp 4. 0.020 hp

    asked by erika on February 25, 2011
  57. physics

    Hello! I'm studying for physics and I am stuck on this question (I have the answer): Two identical cars are travelling on a horizontal road, one of them is going at twice the speed of the other one. Both break using the same force. The slower car breaks

    asked by castiel on May 9, 2014
  58. physics

    A sled and rider have a total mass of 58.4 kg. They are on a snowy hill accelerating at 0.4g. The coefficient of kinetic friction between the sled and the snow is 0.17. What is the angle of the hill's slope measured upward from the horizontal? You may find

    asked by joy on February 12, 2018
  59. geometry

    hi, can anyone plz help? im asked to work out the gradient of a straight line, which i understand fine. Its which units to use that confuse me. if distance is on the vertical axis and time/days is along the horizontal axis, what will the gradient be

    asked by bertie on May 27, 2007
  60. Physics

    A girl with a 72.8 g yo-yo is swinging it in a horizontal circle at an angular velocity of 7.99 rad/s. If the string is tilted down at an angle of 17.1°, what must the length of the yo-yo string be? so i tried doing r = (0.0728)(7.99)^2/(9.8sin17.1 +

    asked by UOIT on November 9, 2015
  61. Math

    A projectile is fired with an initial velocity of 350 feet per second at an angle of 45° with the horizontal. To the nearest foot, find the maximum altitude of the projectile. The parametric equations for the path of the projectile are x = (350 cos

    asked by Devon on April 12, 2008
  62. physics

    A box is being accelerated across a rough, level surface. A force is being applied to the box in an upward and a rightward direction (as shown below). This force makes an angle of 30 degrees with the horizontal. The force of friction experienced by box

    asked by anonmous on October 26, 2016
  63. physics

    A 3.02 kg mass attached to a light string rotates on a horizontal, frictionless table. The radius of the circle is 1.2 m, and the string can support a mass of 33.8 kg before breaking. The acceleration of gravity is 9.8 m/s 2 . What maximum speed can the

    asked by Truman on November 24, 2014
  64. Physics

    I just wanted to be sure if I got the answer right 1. Jenny (75 kg) goes on a ski trip. She goes down a slope that's inclined at 15*. Her drag coefficient is 0.300, the area of contact with the air is 0.750 m^2 and the air density is 1,31 kg/m^3. The

    asked by Tom on January 31, 2012
  65. Physics

    A box is being pushed up the ramp by you at a 15 degree angle. The coefficient of kinetic friction between the box and ramp is .4. The box has a mass of 12 kg and you are pushing up the ramp with a force of 95N. What is the kinetic frictional force? What

    asked by robert on December 7, 2011
  66. physics

    Two identical springs (neglect their masses) are used to “play catch” with a small block of mass 200 g (see the figure). Spring A is attached to the floor and compressed 10.0 cm with the mass on the end of it (loosely). Spring A is released from rest

    asked by Luis on July 3, 2011
  67. Pre calculus

    ramp needs an angle of elevation no greater than 4.8. the business has 8 ft to build the ramp. the ramp must rise 6 inches above the ground. can a ramp be built in this space? if a ramp can be built what is the minimum horizontal distance possible? please

    asked by Anonymous on March 2, 2017
  68. physics

    a ball of mass 2kg is suspended by a string of length 2m.it then from "b" and kicks an identical ball at position "a".if frictional force is neglected,through what distance ball "a"is moved horizontal if ball"b"becomes at rest after it kicks ball"a"?take

    asked by Naod Demise on March 27, 2018
  69. Physics

    What is the direction of the net magnetic field at the point? I'll describe the figure here: Imagine a cartesian plane. At (0,y) is a wire carrying a current out of the screen. At (0, -y)is a wire carrying identical current out of the screen. At (x, 0) is

    asked by anony mouse on March 11, 2010
  70. Science

    Fortune teller's use crystal balls to see the future. A fortune teller has a crystal ball with an index of refraction of 1.5 and diameter of 0.2 m. You sit on one side of the ball and the fortune teller sits on the other. She holds up a small red jewel on

    asked by Abhishek Ranjan on May 20, 2013
  71. Physics

    An electron and a proton move in circular orbits in a plane perpendicular to a uniform magnetic field B. Find the ratio of the radii of their circular orbits when the electron and the proton have the same momentum. Find the ratio of the radii of their

    asked by Jess on September 28, 2010
  72. Physics

    An electron and a proton move in circular orbits in a plane perpendicular to a uniform magnetic field B. Find the ratio of the radii of their circular orbits when the electron and the proton have the same momentum. Find the ratio of the radii of their

    asked by Jess on September 28, 2010
  73. algebra

    Suppose that the weight (in pounds) of an airplane is a linear function of the total amount of fuel (in gallons) in its tank. When graphed, the function gives a line with a slope of 6.2. With 52 gallons of fuel in its tank, the airplane has a weight of

    asked by kent on April 2, 2014
  74. chemistry

    *This is part of an exam. so please don't give full solution* just trying to bump ahead of a block. The decomposition of NO2 at room temperature exhibits the following variation in concentration with time: The concentration of NO2 is expressed in

    asked by 3.091x on July 26, 2014
  75. Physics

    You are given vectors A = 5.0i - 6.5j and B = -2.5i + 7.0j. A third vector C lies in the xy-plane. Vector C is perpendicular to vector A and the scalar product of C with B is 15.0. Find the x and y components to vector C. Here's the step by step from the

    asked by Vectors on August 30, 2014
  76. math

    Which statement best explains if the graph correctly represents the proportional relationship y = −2x? A coordinate plane is shown. Points are graphed at 2 comma 4 and negative 1 comma 2. The points are joined by a line. No, the points shown would not be

    asked by Math help on November 8, 2017
  77. Physics

    An electric motor has 72 turns of wire wrapped on a rectangular coil, of dimensions 3cm by 4cm. Assume that the motor uses 14A of current and that a uniform 0.5T magnetic field exists within the motor. 1)What is the maximum torque delivered by the motor?

    asked by Belle on April 7, 2007
  78. Geometry

    Which theorem or postulate is the construction of parallel lines based upon? A. Consecutive Interior Angles Converse Theorem B. Corresponding Angles Converse Postulate C. In the same plane, if two lines are perpendicular to the same line, then they are

    asked by Haylee on February 12, 2014
  79. physics

    ¬Calculate the period of oscillation of a simple pendulum of length 1.8 m, with a bob of mass 2.2 kg. What assumption is made in this calculation? (g = 9.8 m s - 2) If the bob of this pendulum is pulled aside a horizontal distance of 20cm and released,

    asked by Anonymous on May 18, 2013
  80. Physics projectile motion

    A football player kicks a ball with a soeed of 22.4 m/s at an angle of 49 degrees above the horizontal from a distance of 39.0 m from the goal post, A). By how much does the ball clear or fall short of clearing the crossbar of the goalpost if the that bar

    asked by Khalid on December 20, 2015
  81. phy 231

    A car of mass 860.0 kg accelerates away from an intersection on a horizontal road. When the car speed is 39.6 km/hr (11.0 m/s), the net power which the engine supplies is 5700.0 W (in addition to the extra power required to make up for air resistance and

    asked by Andrea on February 14, 2016
  82. physics

    A wheel rotates without friction about a stationary horizontal axis at the center of the wheel. A constant tangential force equal to 83.N is applied to the rim of the wheel. The wheel has radius 0.110m . Starting from rest, the wheel has an angular speed

    asked by amy on May 3, 2013
  83. physics

    A long, straight wire lies on a horizontal table and carries a current of 3.05 µA. In a vacuum, a proton moves parallel to the wire (opposite the current) with a constant speed of 3.00 104 m/s at a distance d above the wire. Ignoring the magnetic field

    asked by Anonymous on December 4, 2012
  84. Physics

    A car of mass 920.0 kg accelerates away from an intersection on a horizontal road. When the car speed is 48.2 km/hr (13.4 m/s), the net power which the engine supplies is 5900.0 W (in addition to the extra power required to make up for air resistance and

    asked by Sunny on May 31, 2016
  85. Physics

    A 15kg box is resting on a hill forming an angle with the horizontal. The coefficient of static friction for the box on the surface is 0.45. Calculate the maximum angle of the incline before the box starts to move. Steps included would be great, I have the

    asked by Mack on June 20, 2018
  86. Physics

    Two archers shoot arrows in the same direction from the same place with the same initial speeds, but at different angles. One shoots at 45.0degrees above the horizontal, while the other shoots at 60.0 degrees.If the arrow launched at 45.0 lands 225 from

    asked by Kara on October 15, 2010
  87. Physics

    A wheel rotates without friction about a stationary horizontal axis at the center of the wheel.A constant tangential force of 75N is applied to the rim of the wheel.The wheel has a radius of 0.13m.The wheel has an angular speed of 14.5rev/s after

    asked by Rash on August 2, 2018
  88. science

    Calculate the period of oscillation of a simple pendulum of length 1.8 m, with a bob of mass 2.2 kg. What assumption is made in this calculation? (g = 9.8 m s - 2) If the bob of this pendulum is pulled aside a horizontal distance of 20cm and released, what

    asked by Suraj on April 21, 2017
  89. Physics

    In the flying ski jump, a skier acquires a speed of about 62 mph (this ended up being 27.7 m/s) by racing down a steep hill and then lifts off into the air off of a horizontal ramp. Beyond the ramp, the ground slopes at an angle of 45 degrees. a) Predict

    asked by Lawon on September 6, 2013
  90. Physics

    A car of mass 900.0 kg accelerates away from an intersection on a horizontal road. When the car speed is 49.7 km/hr (13.8 m/s), the net power which the engine supplies is 4300.0 W (in addition to the extra power required to make up for air resistance and

    asked by Sam on January 2, 2014
  91. Physics

    A car of mass 900.0 kg accelerates away from an intersection on a horizontal road. When the car speed is 49.7 km/hr (13.8 m/s), the net power which the engine supplies is 4300.0 W (in addition to the extra power required to make up for air resistance and

    asked by Adam on January 2, 2014
  92. Physics

    A horizontal disk with a radius of 23 m ro- tates about a vertical axis through its center. The disk starts from rest and has a constant angular acceleration of 5.5 rad/s2. At what time will the radial and tangen- tial components of the linear acceleration

    asked by Kaylee on July 2, 2014
  93. physics

    An object of mass 5.00 kg is attached to a spring with a force constant of 300 N/m. It is oscillating on a horizontal frictionless surface with an amplitude of 2.00 m. A 8.00 kg object is dropped vertically on top of the 5.00 kg object as it passes through

    asked by Liz on January 3, 2010
  94. Math

    in the center of the first sheep of graph paper, draw a figure with straight sides that will fit in a 15 by 20 block (the figure can be hard or easy so I was thinking of going with a simple rectangle). On the second sheet of graph paper draw the same

    asked by Marie on June 3, 2012
  95. Physics

    One kind of slingshot consists of a pocket that holds a pebble and is whirled on a circle of radius r. The pebble is released from the circle at the angle θ so that it will hit the target. The angle in the drawing is 33.4°. The distance to the target

    asked by Ryan C. on September 23, 2012
  96. Physics

    One kind of slingshot consists of a pocket that holds a pebble and is whirled on a circle of radius r. The pebble is released from the circle at the angle θ so that it will hit the target. The angle in the drawing is 35.5°. The distance to the target

    asked by Eric on September 28, 2012
  97. physics

    A lighthouse standing on the top of a cliff is observed from two open boats (boats are not decked over) A and B in a vertical plane through the light house. The angle of elevation of the top of the lighthouse viewed from B is 16 degrees and the angles of

    asked by Romar on July 20, 2013
  98. Physics

    A uniform thin ring of charge, with radius 5.20 cm and total charge 6.60 ìC, is located in the yz-plane and centered on the origin. (In other words, the x-axis passes through the center of the ring, and is perpendicular to the ring.) A particle of mass

    asked by Rudi on November 1, 2010
  99. physics

    A stone with a mass of 1.0 kg is tied to the end of a light string which keeps it moving in a circle with a constant speed of 4.0 m/s on a perfectly smooth horizontal tabletop. The radius of the path is 0.60 m. How much work does the tension in the string

    asked by jim on November 12, 2017
  100. Physics

    A billiard ball traveling at 6.25 m/s collides with a second stationary ball of equal size and shape causing the second ball to move at an angle of 25º with respect to the horizontal at a speed of 3.0 m/s.Both balls have a mass of .210kg. What is the

    asked by Lisa on January 4, 2014