1. physics

    A 1240 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1970 N crate hangs from the far end of the beamThe angle between the beam and the horizontal is 30 degrees upwards and the angle between the

    asked by student on November 28, 2010
  2. physics help me please

    A 1220 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1990 N crate hangs from the far end of the beamThe angle between the beam and the horizontal is 30 degrees upwards and the angle between the

    asked by student on November 28, 2010
  3. physics

    1. A 70 kg uniform 4.0 m long beam is attached to a vertical wall and is supported by a wire. The beam makes an angle of 45 degrees with the horizontal and the wire is horizontal. The horizontal component of the force that the wall exerts on the lower end

    asked by Sandhya on May 24, 2008
  4. physics

    If an 8N force is applied to a wall for 2 minutes and the wall does not move, how much work is done?

    asked by anthony on September 19, 2012
  5. physics

    A ruler stands vertically against a wall. It is given a tiny impulse at such that it starts falling down under the influence of gravity. You can consider that the initial angular velocity is very small so that . The ruler has mass 250 g and length 30 cm.

    asked by juanpro on December 6, 2013
  6. physics(URGENT!!!!!)

    A ruler stands vertically against a wall. It is given a tiny impulse at θ=0∘ such that it starts falling down under the influence of gravity. You can consider that the initial angular velocity is very small so that ω(θ=0∘)=0. The ruler has mass m=

    asked by Andy on December 8, 2013
  7. physics I'M STUCK PZL HELP

    A ruler stands vertically against a wall. It is given a tiny impulse at θ=0∘ such that it starts falling down under the influence of gravity. You can consider that the initial angular velocity is very small so that ω(θ=0∘)=0. The ruler has mass m=

    asked by Andy on December 8, 2013
  8. physics(URGENT!!!!!)

    A ruler stands vertically against a wall. It is given a tiny impulse at θ=0∘ such that it starts falling down under the influence of gravity. You can consider that the initial angular velocity is very small so that ω(θ=0∘)=0. The ruler has mass m=

    asked by Anonimus on December 8, 2013
  9. Physics

    You are launching Robin Hood out of a cannon and over the wall of the castle to rescue the Maid Marion. He would like to clear the castle wall by as much as possible. The cannon is stuck at an angle of 45 degrees from the ground and will launch him with a

    asked by Lilly on April 5, 2017
  10. Physics

    You are launching Robin Hood out of a cannon and over the wall of the castle to rescue the Maid Marion. He would like to clear the castle wall by as much as possible. The cannon is stuck at an angle of 45 degrees from the ground and will launch him with a

    asked by Brad on April 5, 2017
  11. Physics

    A spherical bowling ball with mass m = 3.7 kg and radius R = 0.103 m is thrown down the lane with an initial speed of v = 8.9 m/s. The coefficient of kinetic friction between the sliding ball and the ground is μ = 0.31. Once the ball begins to roll

    asked by MUHAMMAD JUNAID on April 9, 2019
  12. east salisbury

    Emily and Hanna are painting their bedroom wall. each 1/2 of paint covers 1/6 of the wall how many gallons will they need to cover the whole wall

    asked by malaya on December 1, 2015
  13. Hyde memorial secondry school

    A pole 6m long leans against a vertical wall so that it makes an angle of 60 with the wall calculate the distance of the foot of the ladder from the wall.

    asked by Shedrack Danjuma on November 25, 2012
  14. Physics

    1) An 8.5kg bowling ball dropped 11m hits the ground 1.5 seconds later. What is the magnitude of the force acting on the ball during the fall? 2) Shuttle astronauts climb at a rate of 24.5m/s^2 shortly after takeoff. What apparent weight would a 95kg

    asked by Jorge on December 22, 2011
  15. physics

    A uniform horizontal beam with a length of 8m and a weight of 200N is attached to a wall by a pin connection. Its far end is supported by a cable that makes an angle of 53° with the beam (Figure below). If a 600N person stands 2m from the wall, find the

    asked by joy on April 23, 2018
  16. Physics

    I'm sorry for the repost I just cant seem to find the answer for this. I did this in A1 and got it all wrong and was given the answer sheet and my teacher told me to look at that which is below, but I didnt understand and shes busy. I understand

    asked by A level Student on September 24, 2018
  17. ELA

    Ryan doesn't know much about the Berlin Wall except that it was torn down before he was born. Which one of these sources would give him the most reliable information? A. a book about President Kennedy's opinion on the Wall B. an article about important

    asked by Anonymous on April 6, 2018
  18. math

    A ladder is 25 ft long leans against a wall. If its foot is 10 feet from the wall,how high does it reach the wall?

    asked by aiza on May 17, 2011
  19. maths

    A ladder 6m long is placed against a vertical wall,its lower end is 2m away from the wall. How high up the wall does it reach?give your answer in one decimal place.

    asked by Anonymous on September 9, 2015
  20. math

    Mr. Garcia is going to pain a mural on one wall. There is a rectangular shaped window that is 24 in. wide and 36 in. high on the wall. How many square feet of the wall will be painted?

    asked by Jeanne on January 25, 2012
  21. Maths

    The perimeter of a rectangular wall is 56m, there are 4 circular windows with a circumference of 7,54m each, the wall has 2 standard doors. What is the length and the width of the wall?

    asked by Lubeth on April 14, 2013
  22. Math

    A ladder is two feet longer than the height of a certain wall. When the top of the ladder is placed against the top of the wall, the distance from the base of the ladder to the bottom of the wall is equal to the height of the wall. How high is the wall?

    asked by Naomi on November 30, 2010
  23. Physics for engineers

    A bowling ball weighing 71.3 is attached to the ceiling by a rope of length 3.73 . The ball is pulled to one side and released; it then swings back and forth as a pendulum. As the rope swings through the vertical, the speed of the bowling ball is 4.60 .

    asked by Matabase on March 13, 2013
  24. Physics

    A minimum horizontal force of 10 N is needed to keep a 500 g book in place against a wall as shown.What maximum mass of book could be supported by the 10 N force if it were directed upwards at an angle of 60° instead of at right angles to the wall?

    asked by LEBZA on April 2, 2012
  25. Calculus

    A searchlight rotates at a rate of 2 revolutions per minute. The beam hits a wall located 8 miles away and produces a dot of light that moves horizontally along the wall. How fast (in miles per hour) is this dot moving when the angle between the beam and

    asked by Reonea on October 30, 2011
  26. social studies

    Why is there a historical debate surrounding the Great Wall of China? A. The Great Wall was successful at keeping invaders out, but it was a costly project to build. B. The emperor's advisors refused to build the Great Wall although it proved to be a

    asked by nobody on February 23, 2019
  27. physics

    A 1240 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1970 N crate hangs from the far end of the beam. (a) Calculate the magnitude of the tension in the wire. (b) Calculate the magnitude of the

    asked by peter on November 19, 2010
  28. physics

    A 1240 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1970 N crate hangs from the far end of the beam. (a) Calculate the magnitude of the tension in the wire. (b) Calculate the magnitude of the

    asked by peter on November 19, 2010
  29. physics help

    A 1210 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1820 N crate hangs from the far end of the beam. The angle between the beam and the horizontal is 30 degrees upwards and the angle between

    asked by james on November 27, 2010
  30. physics help

    A 1210 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1820 N crate hangs from the far end of the beam. The angle between the beam and the horizontal is 30 degrees upwards and the angle between

    asked by james on November 27, 2010
  31. Calculus (related rates)

    A ladder 13 meters long rests on horizontal ground and leans against a vertical wall. The foot of the ladder is pulled away from the wall at the rate of 0.4 m/sec. How fast is the top sliding down the wall when the foot of the ladder is 5 m from the wall?

    asked by Craig on March 21, 2017
  32. Science -Check Answers-

    1. In the following diagram, the green ball changes direction after colliding with the red ball because the red ball has more momentum. True

    asked by Chloé on March 17, 2014
  33. Science

    1. In the following diagram, the green ball changes direction after colliding with the red ball because the red ball has more momentum. True

    asked by Chloé on March 17, 2014
  34. calculus

    A ladder of 85 m length is resting against a wall. If it slips 7 m down the wall, then how far is the bottom from the wall if it was initially 40 m away from it.

    asked by Anonymous on November 6, 2013
  35. phyics

    A 1390-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A 1960-N crate hangs from the far end of the beam. Using the data shown in the figure, find (a) the magnitude of the tension in the wire and the

    asked by LLYOD BLUE on November 12, 2013
  36. physics

    Grant accelerates a 1kg ball 5.0m/s2 horizontally. The vertical acceleration of the ball is zero. The force of gravity is the only external force acting on the ball other than the forces Grant exerts on it. a-How large is the horizontal force grant exerts

    asked by aaron on March 1, 2015
  37. Physics

    A lump of clay with a mass of 5.0 ! 10-2 kg is thrown toward a wall with a velocity of 3.0 m/s. The clay bounces off the wall with a velocity of #0.5 m/s. What is the impulse on the clay? If the clay in the previous problem impacted the wall for 5.0 ms,

    asked by HELP on December 8, 2011
  38. Tornadoes

    Are tornadoes strong enough to go through a wall? It depends on the porosity of the wall. A 30 mph wind can be felt a bit through a plain cider-block wall. So the ansewr is a "qualified" yes.

    asked by Logan on August 17, 2006
  39. physics

    the instant before a batter hits a 0.14 kilogram baseball, the velocity of the ball is 45 m/s west. the instant after the batter hits the ball, the ball's velocity is 35 m/s. The bat and ball are in contact for 1.0*10^-2. 1. determine the magnitude and

    asked by lisbeth on February 15, 2011
  40. Math

    An object weighing 6000# traveling at 60 mph hits a wall. What is the force of impact ?

    asked by Thomas Cochran on April 22, 2015
  41. Physics

    A 4 kg mass is held at rest against a vertical wall by force F, acting perpendicular to the wall. If Mk=.25 and Ms=.6, what is the minimum force that will keep the mass from moving?

    asked by Victoria on May 12, 2015
  42. Physics A2 level Student

    When I came new to As I was given these as homework after we did easy practise questions in class. I find this topic and all its worksheets easy except this one for some reason. I got every single one of these questions wrong and struggled and still do

    asked by Help needed on September 19, 2018
  43. science

    In the following diagram, the greem ball changes direction after colliding with the red ball because the red ball has more momentum. True

    asked by thenameisjordan on March 10, 2014
  44. math

    A ladder 10 m long rests on horizontal ground and leans against a vertical wall. The foot of the ladder is pulled away from the wall at 2 m/s. How fast is the top sliding down the wall when the foot of the ladder is 6m from the wall?

    asked by Grant on May 3, 2013
  45. Physics

    A spherical bowling ball with mass m = 3.2 kg and radius R = 0.107 m is thrown down the lane with an initial speed of v = 8.6 m/s. The coefficient of kinetic friction between the sliding ball and the ground is μ = 0.34. Once the ball begins to roll

    asked by stewart on November 6, 2014
  46. Physics 121 HW

    A sign has a mass of 1050 kg, a height h = 1 m, and a width W = 4 m. It is held by a light rod of length 5 m that is perpendicular to a rough wall. A guy wire at 23° to the horizontal holds the sign to the wall. Note that the distance from the left edge

    asked by Jay on July 14, 2010
  47. physics 121 hanging sign

    A sign has a mass of 1050 kg, a height h = 1 m, and a width W = 4 m. It is held by a light rod of length 5 m that is perpendicular to a rough wall. A guy wire at 23° to the horizontal holds the sign to the wall. Note that the distance from the left edge

    asked by Jay on July 14, 2010
  48. Physics

    A 6-kg bowling ball with a radius of 14 cm is spinning about a vertical axis (with its center of mass motionless) at an initial rate of 3 turns per second. Friction with the floor, however, causes the bowling ball to rotate more and more slowly until it

    asked by Jordan on February 22, 2011
  49. Math

    Sharon is moving up to the attic and wants to paint one wall blue. The wall is a triangle with a base of 16 feet and a height of 13. What is the area of the wall to be painted? (1 point) A: 10.4 ft B: 52 ft******* C: 104 ft D: 208 ft. Help meeeeeee!!!!

    asked by AngelDabSwag on May 7, 2018
  50. physics steve or damon help!!!!

    A stone is thrown horizontally from the top of a vertical wall with a velocity of 15m/s hit the horizontal ground at a point 45m from the base of the wall.calculate the height of the wall g=10

    asked by david on March 28, 2016
  51. physics for scientists and engeneers I

    A tennis ball of mass m = 0.065 kg and speed v = 35 m/s strikes a wall at a 45° angle and rebounds with the same speed at 45° (see figure). What is the impulse given to the wall? Magnitude

    asked by Johnathon on February 20, 2011
  52. Physics

    A projectile is shot at a speed of 30m/s at an angle of 50 degrees above the horizontal. The projectile hits a vertical wall at a height 20m above the horizontal. Where is the wall's location? There are 2 answers.

    asked by Iris on September 25, 2013
  53. urgent calculus help please

    A 20m long ladder is leaning against a wall. The top of the ladder is sliding down the wall at a constant speed of 2m/s. How quickly is the bottom of the ladder moving away from the wall when the bottom of the ladder is 5m from the wall? Give your answer

    asked by Anonymous on April 2, 2017
  54. Math

    Q1.A tree was chopped by the Samuels family for the holidays. How tall was the tree originally if the piece they chopped down was 7feet tall, and fell 4 feet from the stump? Q2. Mr pratt's rake is leaning up against a wall. If the top of the rake hits the

    asked by Daisy on January 24, 2015
  55. Calculus

    a 5m ladder rests against a vertical wall. The top of the ladder begins sliding down the wall at 2m/sec, while the foot of the ladder moves away from the base of the wall. How fast is the foot of the ladder moving away from the wall at the instant the foot

    asked by Lost One on December 21, 2012
  56. Physics

    In an exhibit at the NASA museum in Huntsville, AL, there is a “human centrifuge”. Guests stand upright against the walls of a circular room with a radius of 8 meters which then spins at an angular velocity ω about an axis through its center. Then,

    asked by amanda on April 26, 2015
  57. Math

    A ladder 5m long is standing vertically, flat against a vertical wall, while its lower end in on the horizontal floor. The lower end moves horizontally away from the wall at a constant speed of 1m/s while the upper end stays in contact with the wall. Find

    asked by Marilyn on July 6, 2018
  58. Physics

    A bowling ball weighing 71.2 N is attached to the ceiling by a 3.80 m rope. The ball is pulled to one side and released; it then swings back and forth like a pedulum. as the rope swings through its lowest point, the speed of the bowling ball is measured at

    asked by Sarah on June 15, 2009
  59. MAth

    A 13 foot ladder is resting against the wall. The bottom is initially 10 feet away from the wall and is being pushed towards the wall at a rate of 0.25 ft/sec. How fast is the top of the ladder moving up the wall 20 seconds after we start pushing? Hint:

    asked by Sam on April 22, 2012
  60. Algebra 1

    A ladder is resting against a wall. The top of the ladder touches the wall at a height of 15 feet and the length of the ladder is one foot more than twice the distance from the wall. Find the distance from the wall to the bottom of the ladder. (Hint: Use

    asked by Jack on February 28, 2013
  61. phys

    A 1155-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1915-N crate hangs from the far end of the beam. (a) Using the data shown in the drawing, find the magnitude of the tension in the wire. (b)

    asked by michelle on November 24, 2010
  62. physics

    A 1290-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1920-N crate hangs from the far end of the beam. the angle going from the top of the beam o the brick wall is at 50.0 degrees. the angle

    asked by TaylorBaum on March 4, 2011
  63. Physics - Circular motion

    A marble of mass m is placed on top of a bowling ball of radius r and allowed to roll from rest. derive the angle from centre of circle at which the marble loses contact with bowling ball. assume there is no friction between marble and bowling ball.

    asked by Andrew on September 5, 2010
  64. physics

    1. how much work do you do on a 25-kg backpack when you walk a horizontal distance of 100 m? -I got 2,500 J 4. if you friend pushes a lawnmower four times as far as you do while exerting only half the force, which one of you does more work? how much more?

    asked by Donna on October 17, 2007
  65. Math

    Jorge plans to paint a bedroom wall that is shaped like a trapezoid. The bottom edge of the wall is 22.5 feet long, and the top edge of the wall is 9.5 feet long. If the wall is 8 feet tall, what is the area of the wall? A: 256 ft² B: 38 ft² C: 90 ft²

    asked by Camillia on March 14, 2018
  66. MATH PLZ HELP!!!!

    Jorge plans to paint a bedroom wall that is shaped like a trapezoid. The bottom edge of the wall is 22.5 feet long, and the top edge of the wall is 9.5 feet long. If the wall is 8 feet tall, what is the area of the wall? • 256 ft2***** • 38 ft2 • 90

    asked by GoldenSparkleGirl on February 8, 2016
  67. physics

    A 5 kg block is being held against the wall. What is the minimum force needed to keep the block from moving if the force is applied at an angle that is 15 degrees above the horizontal. The coefficient of static friction between the wall and the block is

    asked by Jamie on February 29, 2016
  68. Physics

    A ball of mass 5.0 kg moving with speed of 2.0 m/s in the +x-direction hits a wall and bounces back with the same speed in the -x-direction. What is the change of momentum of the ball?

    asked by Natalia on March 31, 2011
  69. Physics

    A 6.5- bowling ball and a 7.1- bowling ball rest on a rack 0.80 apart. Part A- What is the force of gravity exerted on each of the balls by the other ball? Part B- At what separation is the force of gravity between the balls equal to 2.2×10−9 ?

    asked by Chris on November 3, 2011
  70. Science

    In the following diagram, the greem ball changes direction after colliding with the red ball because the red ball has more momentum. True

    asked by Check my answers pls on March 6, 2014
  71. calculus 1

    a ladder 20 ft. long rests against a vertical wall.If the bottom of a ladder slides away from the wall at a rate of 4 ft./sec, how fast is the top of the ladder sliding down the wall when the bottom of the ladder is 12 ft. from the wall? x^2 +y^2 = 20^2

    asked by hasel on September 25, 2014
  72. Math Someone plz plz plz help!!!

    Jorge plans to paint a bedroom wall that is shaped like a trapezoid. The bottom edge of the wall is 22.5 feet long, and the top edge of the wall is 9.5 feet long. If the wall is 8 feet tall, what is the area of the wall? • 256 ft2 ***** • 38 ft2 • 90

    asked by GoldenSparkleGirl on February 8, 2016
  73. physics

    A 5kg mass is sliding at a speed of 7 m/s on horizontal sheet of frictionless ice when it smacks in to a wall of the ice rink. There are bumpers made of elastic springs placed along the wall for protection. The mass hits the bumper, compressing it by 5cm

    asked by sand on December 26, 2011
  74. Physics

    Can you please help me with the following questions? please. 1. how much work do you do on a 25-kg backpack when you walk a horizontal distance of 100 m? -I got 2,500 J 4. if you friend pushes a lawnmower four times as far as you do while exerting only

    asked by Donna on October 16, 2007
  75. urgent physics..

    Adventurous Mary tries a new game: she puts on her rollerblades and throws the ball towards the wall, lets it bounce off, catches it again, throws it right back, and so on. She notices a strange thing: after the second throw, she is unable to catch the

    asked by jack on June 18, 2013
  76. physics-acoustics

    1.A wall between two rooms is 20 x 9 ft. The wall construction has Transmission Loss 50 dB at 1000 Hz. In the wall is a small window of size 4 x 2 ft. The window has a tested Transmission Loss of 20 dB at the same frequency. The receiving room has 200 ft^2

    asked by sandhu on November 3, 2010
  77. physics-acoustics

    1.A wall between two rooms is 20 x 9 ft. The wall construction has Transmission Loss 50 dB at 1000 Hz. In the wall is a small window of size 4 x 2 ft. The window has a tested Transmission Loss of 20 dB at the same frequency. The receiving room has 200 ft^2

    asked by sandhu on November 4, 2010
  78. physics

    A 2.63 kg ball is dropped from the roof of a building 180.6 m high. While the ball is falling to Earth, a horizontal wind exerts a constant force of 13.0 N on the ball. How long does it take to hit the ground? The acceleration of gravity is 9.81 m/s2 . How

    asked by jay on November 19, 2017
  79. Physics

    A 4.0 kg bowling ball rolling at a velocity of 11m/s down the bowling lane makes a head on collision with a 2.5 kg bowling pin initially at rest. After the collision, the pink has a velocity of 13.54m/s down the bowling lane. What is the final velocity of

    asked by Victor Olidipo on January 7, 2016
  80. Calculas

    A 13ft ladder is placed against a verticle wall. Suppose the bottom of the ladder slides away from the wall at a constant rate of 2 feet per second. How fast is the top of the ladder sliding down the wall (negitive rate) when the bottom is 5ft from the

    asked by jessica on December 2, 2014
  81. Physics

    A bowling ball weighing 71.2 is attached to the ceiling by a 3.50 rope. The ball is pulled to one side and released; it then swings back and forth like a pendulum. As the rope swings through its lowest point, the speed of the bowling ball is measured at

    asked by Madeline on June 27, 2010
  82. calculus

    A ladder 10 ft long rests against a vertical wall. let θ be the angle between the top of the ladder and the wall and let x be the distance from the bottom of the ladder to the wall. If the bottom of the ladder slides away from the wall, how fast does x

    asked by Sasha on October 7, 2010
  83. math

    A ladder 10 ft long rests against a vertical wall. let θ be the angle between the top of the ladder and the wall and let x be the distance from the bottom of the ladder to the wall. If the bottom of the ladder slides away from the wall, how fast does x

    asked by Sasha on October 7, 2010
  84. AP Physics

    15. A 3.0 kg block is pushed 3.0 m at a constant velocity up a vertical wall by a constant force applied at an angle of 30.0 with the horizontal, as shown in the figure. The acceleration of gravity is 9.81 m/s2. If the coefficient of kinetic friction

    asked by jeff on February 26, 2011
  85. physics

    A 3.4 kg plant hangs from the bracket shown in the figure. The bracket has a mass of 0.65 kg , and its center of mass lies 9.0 cm from the wall. A single screw holds the bracket to the wall. Find the horizontal tension force in the screw. Hint: Imagine

    asked by phoebe on December 8, 2016
  86. Mathematics -- Geometry --

    A bowling ball is a solid ball with a spherical surface and diameter 30 cm. To custom fit a bowling ball for each bowler, three holes are drilled in the ball. Bowler Kris has holes drilled that are 8 cm deep and have diameters of 2 cm, 2 cm, and 3 cm.

    asked by Knights on February 12, 2013
  87. Physics Classical Mechanics

    A person of mass m2= 85.0 kg is standing on a rung, one third of the way up a ladder of length d= 4.0 m. The mass of the ladder is m1= 15.0 kg, uniformly distributed. The ladder is initially inclined at an angle θ= 40.0∘ with respect to the horizontal.

    asked by Robert on December 12, 2013
  88. physics

    A block of mass 2.5 kg is pushed up against the vertical wall by a force of 60 N acting at 47◦ to the ceiling. The coefficient of kinetic friction between the block and the wall is 0.67. The acceleration of gravity is 9.8 m/s2 . Find the work done by

    asked by Kaylee on June 27, 2014
  89. Physics

    A nail on a vertical wall is pulled by means of a chord attached to its head if the chord makes an angle of 60deg to the horizontal and it exact a force of 80N on the nail find the effective force which tends to pull the nail out of the wall and the force

    asked by Great on September 19, 2017
  90. Physics

    1) A particle travels between two parallel vertical walls separated by 16 m. It moves toward the opposing wall at a constant rate of 6.4 m/s. It hits the opposite wall at the same height. The acceleration of gravity is 9.8 m/s. a) What will be its speed

    asked by Lia on June 16, 2011
  91. math- solving quadratic equations by factoring

    a ladder is resting against a wall. the top of the ladder touches the wall at a height of 12 feet. Find the distance from the wall to the bottom of the ladder if the length of the ladder is 12feet less than twice its distance from the wall.

    asked by math1 on December 19, 2010
  92. maths

    A ladder lies against a wall.the top of the ladder reaches 8feet above the ground. when the ladder slips 2meters away from the wall,the top of the ladder touches the foot of the wall.then length of the wall?

    asked by Rohith on July 31, 2011
  93. Calculus

    related rates: a ladder, 12 feet long, is leaning against a wall. if the foot of the ladder slides away from the wall along level ground,what is the rate of change of the top of the ladder with respect to the distance of the foot of the ladder from the

    asked by JJ on January 9, 2008
  94. physics

    a snow ball at 0 degrees celsius is thrown against a brick wall. if all the kinetic energy of the snowball turns to heat upon striking the wall, how fast must you throw the snowball to cause it to melt completely?

    asked by Anonymous on April 14, 2012
  95. science quiz pls help!!!

    In the following diagram, the green ball changes direction after colliding with the red ball because the red ball has more momentum. True False***? 2. What is the momentum of a 20.0 kg scooter traveling at 5.00 m/s. 4.00 kg m/s 20.0 kg m/s 25.0 kg m/s 100

    asked by TTR+S<3 on March 18, 2014
  96. math

    the top of a ladder 6 m long is resting against a vertical wall on a level pavement, when the ladder begins to slide outwards. At the moment when the foot of the ladder is 4 m from the wall, it is sliding away from the wall @ 0.5m/sec. How far is the foot

    asked by sapta on November 3, 2014
  97. physics

    A uniform beam weighing 1300N is attached to a vertical wall so that it is perfectly horizontal. the beam is 8 m long. A support race is anchored to the wall beneath the beam, making contact with the beam 3 m away from the wall at an angle of 25 degrees.

    asked by kassy on December 1, 2016
  98. Physics

    Will you check my work and help me with the last two problems please? A 4 kg ball has a momentum of 12 kg m/s. What is the ball's speed? -(12 kg/m/s) / 4kg=3m/s A ball is moving at 4 m/s and has a momentum of 48 kg m/s. What is the ball's mass? -(48kg/m/s)

    asked by Soly on October 14, 2007
  99. physics

    Will check my work and help me with the last two problems please? A 4 kg ball has a momentum of 12 kg m/s. What is the ball's speed? -(12 kg/m/s) / 4kg=3m/s A ball is moving at 4 m/s and has a momentum of 48 kg m/s. What is the ball's mass? -(48kg/m/s) /

    asked by Soly on October 15, 2007
  100. Physics Problems

    Will check my work and help me with the last two problems please? A 4 kg ball has a momentum of 12 kg m/s. What is the ball's speed? -(12 kg/m/s) / 4kg=3m/s A ball is moving at 4 m/s and has a momentum of 48 kg m/s. What is the ball's mass? -(48kg/m/s) /

    asked by Soly on October 13, 2007