1. Let's break up the wall. 2. Let's break the wall. (What is the difference between 'break up' and 'break'?)

15,601 results
  1. 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?

  2. 11th grade

    A 40-kg skater is standing still in front of a wall. By pushing against the wall she propels herself backward with a velocity of -1.8 m/s. Her hands are in contact with the wall for 0.80 s. Ignore friction and wind resistance. Find the magnitude and

  3. 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?

  4. 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

  5. physics

    A tennis ball (m= 0.2 kg) is thrown at a brick wall. It is traveling horizontally at 16 just before hitting the wall and rebounds from the wall at 8 , still traveling horizontally. The ball is in contact with the wall for 0.04 s. What is the magnitude of

  6. algebra

    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

  7. physics

    A tennis ball with a speed of 12.5 m/s is moving perpendicular to a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 11.4 m/s. If the ball is in contact with the wall for 0.0139 s, what is the average acceleration

  8. 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

  9. 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

  10. Social Studies

    What would an economist expect if the negative incentives for bad behavior in a school became stricter? A. Students would be less likely to break the rules because the expectations are clearer. B. Students would be less likely to break the rules because

  11. Physics

    An old building is being demolished by swinging a heavy metal ball from a crane. Suppose that such a 85kg ball swings from a 20-m-long wire at speed 10m/s as the wire passes the vertical orientation. What tension force must the wire be able to withstand in

  12. physics

    In these figures, we see a boy named Billy riding a carnival ride called the Rotor and the free-body diagram for the forces acting on him. What must be the magnitudes of the vectors (f)wall,Billy and (W)Earth,Billy if Billy remains at the same height along

  13. physics

    A 53.8-kg skater is standing at rest in front of a wall. By pushing against the wall she propels herself backward with a velocity of -1.33 m/s. Her hands are in contact with the wall for 0.960 s. Ignore friction and wind resistance. Find the average force

  14. bus stats

    A manufacturing company has 5 identical machines that produce nails. The probability that a machine will break down on any given day is .1. Define a random variable X to be the number of machines that will break down in a day. a. what is the appropriate

  15. Calc.

    A ladder 25ft long is leaning against the wall of a house. The ladder is pulled away from the wall at a rate of 2 ft per second. How fast is the top of the ladder moving down the wall when its base is 7ft from the wall?

  16. math

    a student is painting one wall of a room. a square window is located in the middle of the wall to be painted. the window measures 3 feet on one side. the area of the wall, not including the window, is 80ft squared. find the height of the wall to the

  17. Math

    A ladder is placed against a wall, with its base 2 m from the wall. The ladder touches the top of a 2 m fence that is 1.5 m from the wall. How high up the wall does the ladder reach? Thanks for answering! Your help is greatly appreciated.

  18. Physics

    A 1.2 kg object is moving with a speed of 8.0 m/s collides perpendicularly with a wall and emerges with a speed of 6.0m/s in the opposite direction perpendicular to the wall. If the object is in contact with the wall for 2.0m/s. What is the magnitude of

  19. Physics

    A trebuchet was a hurling machine built to attack the walls of a castle under siege. A large stone could be hurled against a wall to break apart the wall. The machine was not placed near the wall because then arrows could reach it from the castle wall.

  20. physics

    A 45 kg skater is standing still in front of a wall. By pushing against the wall she propels herself backward with a velocity of -1.0 m/s. Her hands are in contact with the wall for 0.80 s. Ignore friction and wind resistance. Find the magnitude and

  21. Algebra

    After watching hours of those home improvement shows, you decide you want to paint you bedroom. You don’t want to paint all four walls the same color (how boring!), but instead, you want to paint one wall a different color. The electric orange paint

  22. physics

    a uniform ladder 16 m long weighing 80 N leans against a smooth vertical wall, making 30 degree with the wall. Find the thrust of the wall, and the force of the point on the ground.

  23. Physics

    21) A 46 kg skater is standing still in front of a wall. By pushing against the wall she propels herself backward with a velocity of – 1.2 m /s. Her hands are in contact with the wall for 0.8 s. Ignore friction and wind resistance • Find the magnitude

  24. Physics

    A tennis ball with a speed of 26.3 m/s is moving perpendicular to a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 13.8338 m/s. If the ball is in contact with the wall for 0.00998 s, what is the average

  25. Math

    13. Andrea, a cyclist, uses a graph to track her speed and distance. The graph below shows Andrea's cycling data for a one hour bike ride. At one point, Andrea took a break from running. When was the break, and how long did the break last? A. At 10

  26. Physics

    A 51.2-kg skater is standing at rest in front of a wall. By pushing against the wall she propels herself backward with a velocity of -1.99 m/s. Her hands are in contact with the wall for 1.20 s. Ignore friction and wind resistance. Find the average force

  27. Calculus

    1a. 15 ft ladder is placed against a vertical wall. the bottom of the ladder is sliding away from the wall at a rate of 2 ft/sec. How fast is the top of the ladder sliding down the wall when the bottom of the ladder is 9 ft from the wall? 1b. Using the

  28. Physics

    You are trying to climb a castle wall so, from the ground, you throw a hook with a rope attached to it at 22.3 m/s at an angle of 55.0° above the horizontal. If it hits the top of the wall at a speed of 15.4 m/s, how high is the wall?

  29. Information Technology

    Please for at least one reason why spreadsheet may be preferred to a word processing table. What are similiarities and difference between page break and column break.

  30. physics

    A 2.42 kg steel ball strikes a massive wall at 11.7 m/s at an angle of 60.0° with the plane of the wall. It bounces off the wall with the same speed and angle, as shown in the figure below. If the ball is in contact with the wall for 0.118 s, what is the

  31. physics

    A 3.56-kg steel ball strikes a massive wall at 10.0 m/s at an angle of θ = 60.0° with the plane of the wall. It bounces off the wall with the same speed and angle (see the figure below). If the ball is in contact with the wall for 0.180 s, what is the

  32. Physics

    Joshua has a mass of 60kg and stands next to a wall ona frictionless skateboard. If he pushes the wall with a force of 30N, how hard does the wall push on him? Show that Joshua accelerates at .5 m/s2 away from the wall.

  33. physics

    A 40.2-kg skater is standing at rest in front of a wall. By pushing against the wall she propels herself backward with a velocity of -1.82 m/s. Her hands are in contact with the wall for 1.16 s. Ignore friction and wind resistance. Find the average force

  34. Physics

    A tennis ball of mass 57. g bounces off a wall. Right before hitting the wall, the ball is moving to the right and up with vx=+40. m/s and vy=+10. m/s. Right after bouncing off the wall, the ball is moving to the left and up with vx=-35. m/s and vy=+10.

  35. Physics

    A 48.8-kg skater is standing at rest in front of a wall. By pushing against the wall she propels herself backward with a velocity of -1.88 m/s. Her hands are in contact with the wall for 0.763 s. Ignore friction and wind resistance. Find the average force

  36. 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?

  37. Physics

    A ball moves at 33m/s through a wall of donuts 31 cm thick. It comesout of the donut wall at 18 m/s. How much time does it spend in the wall of donuts? How thick would the wall of dounts need to be to stop the ball entirely? Is the answer 1.3 secondsand

  38. 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

  39. Physics

    A tennis ball with a speed of 28.3 m/s is moving perpendicular to a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 14.6311 m/s. If the ball is in contact with the wall for0.013 s, what is the average acceleration

  40. Physics

    A tennis ball with a speed of 14m/s is moving perpendicular to a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 11.41m/s. If the ball is in contact with the wall for 0.0112s, what is the average acceleration of

  41. 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.

  42. Math

    Sarah is going to paint her house over the March Break. She has 3 1/2 cans of paint left over from the last time she painted. She knows that each wall takes 2 1/4 to cover. How many walls can she paint with what she has?

  43. physics

    You are trying to climb a castle wall so, from the ground, you throw a hook with a rope attached to it at 20.9 m/s at an angle of 71.0° above the horizontal. If it hits the top of the wall at a speed of 7.90 m/s, how high is the wall?

  44. physics

    A beam of red laser light (λ = 633 nm) hits a black wall and is fully absorbed. If this exerts a total force F = 5.9 nN on the wall, how many photons per second are hitting the wall?

  45. English

    1. Let's break up the wall. 2. Let's break the wall. (What is the difference between 'break up' and 'break'?)

  46. Englsh

    1. Let's break up the wall. 2. Let's break the wall. (What is the difference between the two sentence?) 3. He wanted to get some rest. 4. He wanted to take some rest. (Are both OK? 5. He got rest after working hard. 6. He took a rest after wroking hard.

  47. science

    If you throw an egg against a wall, the egg will break. But if you throw it at the same speed into a sagging sheer, it may not break. Why?

  48. Algebra

    Last post for today: This is translated but I'm not really sure what it means. -Break out of −28x^2−21x^3 as much as possible. -Break out the largest possible factor from x^2−2x. -Break out and shorten 36x + 8x^3 over 12x What does 'break out' mean?

  49. Physics(work and energy)

    A cannon ball is fired so that it hits the wall at the top of a 10m tower.If the energy needed to destroy the wall is 49000 F and the mass of the cannon ball is 10 k, the minimum initial velocity of the cannon ball required to break the tower wall is A 100

  50. Help Math

    A division of a corporation manufactures bicycle pumps. Each pump sells for $9, and the variable cost of producing each unit is 40% of the selling price. The monthly fixed costs incurred by the division are $50,000. What is the break-even point for the

  51. Math Please help

    A division of a corporation manufactures bicycle pumps. Each pump sells for $9, and the variable cost of producing each unit is 40% of the selling price. The monthly fixed costs incurred by the division are $50,000. What is the break-even point for the

  52. math Please help/explain

    A division of a corporation manufactures bicycle pumps. Each pump sells for $9, and the variable cost of producing each unit is 40% of the selling price. The monthly fixed costs incurred by the division are $50,000. What is the break-even point for the

  53. Physics

    The crew men in space are discussing whether they can crack a wall nut with a hammer. Man A says that hitting wall nut with a hammer would be no more effective than hitting it with a feather. Because the hammer is weightless in space. Man B says that he

  54. Science

    a 1.73 kg steel ball strikes a massive wall at 11.4 m/s at an angle of 50.9 with the perpendicular to the plane of the wall. It bounces off the wall at the same speed and angle it originally had.if the ball is ik contact with the wall for .101 s what is

  55. Physics URGENT!!!

    A 4.02 kg steel ball strikes a massive wall at 11.8 m/s at an angle of 60.0° with the plane of the wall. It bounces off the wall with the same speed and angle, as shown in the figure below. If the ball is in contact with the wall for 0.174 s, what is the

  56. physics

    A 3.42-kg steel ball strikes a massive wall at 10.0 m/s at an angle of θ = 60.0° with the plane of the wall. It bounces off the wall with the same speed and angle. If the ball is in contact with the wall for 0.170 s, what is the average force exerted by

  57. physics

    A 3.56-kg steel ball strikes a massive wall at 10.0 m/s at an angle of θ = 60.0° with the plane of the wall. It bounces off the wall with the same speed and angle (see the figure below). If the ball is in contact with the wall for 0.180 s, what is the

  58. Math Help

    A manufacturer of 24-hr variable timers, has a monthly fixed cost of $56,000 and a production cost of $9 for each timer manufactured. The units sell for $16 each. Find the break-even point algebraically. a. break-even production 16,000 units; break-even

  59. Math

    A manufacturer of 24-hr variable timers, has a monthly fixed cost of $56,000 and a production cost of $9 for each timer manufactured. The units sell for $16 each. Find the break-even point algebraically. a. break-even production 16,000 units; break-even

  60. Biology

    Q1. What enzyme could you use to break down the major chemical in the cell wall? A: EDTA but it's not an enzyme Q2. What chemical would you use to break down the major chemical in the cell membrane? A: something like lipases? Please help!!

  61. Probability

    You throw a beanbag at a wall with 7 colored squares, each with an area of 1/4^2. If you hit a square, you win a prize. What is the probability of winning a prize? You need more information. For starters: 1) what is the total area of the wall? 2) Are

  62. Math

    A 3 foot long pole leans against a wall. The bottom is 5 feet from the wall. How much farther should the bottom be pulled away from the wall so that the top moves the same amount down the wall?

  63. physics

    A 40.2-kg skater is standing at rest in front of a wall. By pushing against the wall she propels herself backward with a velocity of -1.84 m/s. Her hands are in contact with the wall for 1.17 s. Ignore friction and wind resistance. Find the average force

  64. Physics

    A particle travels between two parallel ver- tical walls separated by 12 m. It moves to- ward the opposing wall at a constant rate of 5.4 m/s. It hits the opposite wall at the sam a) What will be its speed when it hits the opposing wall? b) At what angle

  65. Chemistry

    How does HI(g) split up into H and I. 1. Does it collide with another HI(g) and energy is lost? or the electron being shared gets dislocated? 2. If so then, can HI collide with anything ( H, I, the wall) to break down into H and I?

  66. Chemistry

    How does HI(g) split up into H and I. 1. Does it collide with another HI(g) and energy is lost? or the electron being shared gets dislocated? 2. If so then, can HI collide with anything ( H, I, the wall) to break down into H and I?

  67. p

    A 3.30-kg steel ball strikes a massive wall at 10.0 m/s at an angle of θ = 60.0° with the plane of the wall. It bounces off the wall with the same speed and angle (see the figure below). If the ball is in contact with the wall for 0.204 s, what is the

  68. physics

    A 3.30-kg steel ball strikes a massive wall at 10.0 m/s at an angle of θ = 60.0° with the plane of the wall. It bounces off the wall with the same speed and angle (see the figure below). If the ball is in contact with the wall for 0.204 s, what is the

  69. physics

    A 3.30-kg steel ball strikes a massive wall at 10.0 m/s at an angle of θ = 60.0° with the plane of the wall. It bounces off the wall with the same speed and angle (see the figure below). If the ball is in contact with the wall for 0.204 s, what is the

  70. Algebra Based Physics

    A 2.50-kg steel ball strikes a massive wall at 10.0 m/s at an angle of θ = 60.0° with the plane of the wall. It bounces off the wall with the same speed and angle (see the figure below). If the ball is in contact with the wall for 0.224 s, what is the

  71. Physics

    A rubber ball is thrown against the wall. The ball has a mass of 4 g and strikes the wall perpendicularly with a speed of 12 m/s. The acceleration is constant while the ball is touching the wall. After touching the wall, the center of mass moves .5 cm

  72. Physics

    A tennis ball of mass 57. g bounces off a wall. Right before hitting the wall, the ball is moving to the right and up with vx=+40. m/s and vy=+10. m/s. Right after bouncing off the wall, the ball is moving to the left and up with vx=-35. m/s and vy=+10.

  73. physics

    A brick wall with a thermal emissivity of 0.8 is heated by the sun all day and is at a temperature of 25 °C in early evening. A pedestrian walking past the wall feels its warmth radiating in to the cool evening air. The wall has surface area of 5m^2. What

  74. physics

    A 3.30-kg steel ball strikes a massive wall at 10.0 m/s at an angle of θ = 60.0° with the plane of the wall. It bounces off the wall with the same speed and angle (see the figure below). If the ball is in contact with the wall for 0.204 s, what is the

  75. physics

    A bullet is fired through a wall that is 10.0 cm. thick. The bullet entered the wall at 400. m/s, and it exited from the wall at 220. m/s. What was the average acceleration of the bullet while it was passing through the wall?

  76. Algebra- word problem

    Jordan has a photograph on his wall that is 3 in. long and 6 in. wide. He takes it to be framed which increases the length and width by 2 in. each. How does getting the picture framed change the amount of wall space needed? My choice is B- Correct??

  77. momentum

    Two 1 kg balls moving at 10 m/s hit a wood wall, each losing momentum which is transferred to the wall as a result of the collision. One ball is made of clay and sticks to the wall. The other is made of rubber and bounces backward at 10 m/s. Which one

  78. English

    1. The fact that he died suddenly surprised me. 2. Do you like the idea that we have to go to New York to be wealthy? 3. The fear that the World Wall 3 will break out is widespread. 4. I would like to have the possibility that he will come back soon. (Are

  79. 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

  80. 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

  81. 4th Grade Math

    Re: Factor Numbers My son has to write at least two ways to break down numbers - I know he did not learn this in school but I would like to help him at home, please help me I have not done this work in over 30 years. He has to break down the numbers 56,

  82. 4th Grade Math

    Re: Factor Numbers My son has to write at least two ways to break down numbers - I know he did not learn this in school but I would like to help him at home, please help me I have not done this work in over 30 years. He has to break down the numbers 56,

  83. 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

  84. 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.

  85. 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?

  86. 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?

  87. 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?

  88. 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?

  89. physics

    A tennis ball with a speed of 15.1 m/s is moving perpendicular to a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 7.9577 m/s. If the ball is in contact with the wall for 0.0139 s, what is the average

  90. Physics

    A tennis ball with a speed of 27.8 m/s is moving perpendicular to a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 20.016 m/s. If the ball is in contact with the wall for 0.0133 s, what is the average

  91. physics

    A 2.80 kg steel ball strikes a massive wall at 12.8 m/s at an angle of alpha = 50.9° with the plane of the wall. It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.156 s, what is the magnitude of the average force

  92. 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.

  93. Physics

    A 275-gram ball bounces off a wall. The ball stays in a horizontal plane throughout the motion. The ball strikes the wall with a speed of 4.50 m/s at an angle of 𝜃 = 35.0o relative to the wall and rebounds with the same speed at the same angle. If the

  94. Physics

    You are trying to climb a castle wall so, from the ground, you throw a hook with a rope attached to it at 25.6 m/s at an angle of 56.0° above the horizontal. If it hits the top of the wall at a speed of 15.3 m/s, how high is the wall?

  95. 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.

  96. 10 grade

    A 80 slug car runs into a wall while moving at 10ft/s. If the car bounces off the wall with the same speed it struck it with as a result of having been in contact with the wall for .8 second, then find... a)... The initial momentum of the car b)... The

  97. Physics

    You throw a ball with a speed of 30 m/s at an angle of 40.0° above the horizontal directly toward a wall. The wall is 22.0 m from the release point of the ball. (a) How long does the ball take to reach the wall? (b) How far above the release point does

  98. Physics and Math

    [a bullet weighing 50gm hits a 10cm wall with velocity 100ms-1 and comes out of the wall. If the frictional force on the bullet while in the wall is assumed to be a constant 2000N then with what velocity does the bullet come out of the wall?

  99. Physics and Math

    [a bullet weighing 50gm hits a 10cm wall with velocity 100ms-1 and comes out of the wall. If the frictional force on the bullet while in the wall is assumed to be a constant 2000N then with what velocity does the bullet come out of the wall?

  100. Keyboarding and Word Processing

    What word processing feature protects against printing the last line paragraph at the top of thenext page What is the difference between a hard page break and a soft page break? There's also a funny thing called "widow and orphan control." Now you'll need

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