1. math

    Use two points on any horizontal line to illustrate why a horizontal line has a slope of 0...I'm really confused. Can anyone answer with an explanation?

    asked by Kyle on November 25, 2009
  2. Physics

    An arrow is shot at a 30.0° angle with the horizontal. It has a velocity of 49 m/s. (a) How high will the arrow go? m (b) What horizontal distance will it travel? m

    asked by RJ on October 12, 2011
  3. Physics Please Help

    A point charge of charge 1 mC and mass 100 g is attached to a non-conducting massless rod of length 10 cm. The other end of the rod is attached to a two-dimensional sheet with uniform charge density σ and the rod is free to rotate. The sheet is parallel

    asked by Mathslover on May 18, 2013
  4. Pre-cal

    Alicia wants to build a block pyramid similar to the one shown. block pyramid the top level will always have 2 blocks. Alicia wants her pyramid to contain as many levels as possible. How many levels can her pyramid have if Alicia has 200 blocks?

    asked by Lillian on May 26, 2015
  5. Re: Physics - drwls #2

    Posted by winterWX on Monday, March 19, 2007 at 11:54pm. A small block of mass m = 4.0 kg can slide along the frictionless loop-the-loop. The block is released from rest at point P, at height h = 23R above the bottom of the loop (R is the radius of the

    asked by winterWX on March 22, 2007
  6. Physics

    In the figure below the left hand calbe has a tension T1 and makes an angle of 42 with the horizontal. the right hand calbe as a tension T3 and makes an angle of 47 with the horizontal. The horizontal cable connecting the two masses has a tension of 37 N.

    asked by Josh on September 15, 2010
  7. maths

    Mr. Gupta bought some bags of cement , each weighing 49.7 Kg . If the total weight of all the bags is 1143.1 Kg , How many bags did he buy ?

    asked by Anonymous on June 11, 2018
  8. Physics

    A dock worker loading crates on a ship finds that a 24 kg crate, initially at rest on a horizontal surface, requires a 64 N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 46 N is required to keep it

    asked by Bill on March 15, 2011
  9. Physics

    An airplane whose speed is 150km/hr climbs from a runway at an angle of 20° above the horizontal. What is its altitude two minutes after takeoff? How many kilometers does it travel in a horizontal direction during this two minute period? My work:

    asked by Anonymous on October 10, 2014
  10. Physics check

    1)What can you say about the motion of a body if: a. its displacement-time graph is a straight line inclined with the time axis b. its velocity-time graph is a straight line inclined with the same axis. c. its velocity- time graph is a parabola A)The

    asked by Jon on April 14, 2008
  11. Physics

    1. Two blocks on a frictionless horizontal surface are connected by a light string. where m1 = 6.21 kg and m2 = 19.5 kg. A force of 48.4 N 6.21kg --T-- 19.5kg ----->48.4 N The acceleration of gravity is 9.8 m/s^2. Find the acceleration of the system.

    asked by Suaad on February 27, 2014
  12. Physics

    1. Two blocks on a frictionless horizontal surface are connected by a light string. where m1 = 6.21 kg and m2 = 19.5 kg. A force of 48.4 N 6.21kg --T-- 19.5kg ----->48.4 N The acceleration of gravity is 9.8 m/s^2. Find the acceleration of the system.

    asked by Fabricus on March 6, 2014
  13. physics

    please tell me if these are correct A track star in the long jump goes into the jump at 12 m/s and launches herself at 20.0 deg above the horizontal. What is the magnitude of her horizontal displacement? (Assume no air resistance and that Ay= -g = -9.81

    asked by y912f on February 15, 2009
  14. Math - Calculus

    The horizontal velocity is constant. (Ignore air resistance.) Recall from your study of trigonometry that if you release a rock at a speed v in a direction that makes an angle α with the horizontal, then the initial vertical velocity vv and the horizontal

    asked by Jamie on February 14, 2017
  15. Physics

    If someone pushes on a box on a horizontal floor with a horizontal force of 17.8 N, but the box does not move, what is the static friction (Fs) between the box and the floor? Explain. The next question is: If the box just starts to move with a horizontal

    asked by George on October 16, 2016
  16. physics

    An airplane with a speed of 85.3 m/s is climbing upward at an angle of 45.0 ° with respect to the horizontal. When the plane's altitude is 587 m, the pilot releases a package. (a) Calculate the distance along the ground, measured from a point directly

    asked by S on September 19, 2014
  17. physics

    1.The earth is constantly bombarded by cosmic rays, which are charged particles from outer space. moving vertically Find the force on one such cosmic ray− a proton that is instantaneously downward at 5.04 107 m/s at a point outside the atmosphere over

    asked by Sandhya on February 23, 2010
  18. physics

    what is the equal and opposite force the force of friction like if a block is at rest on a table static friction is stil exerted by the table onto the block keeping it from moving what is the equal and opposite force of this force?

    asked by physics on September 3, 2009
  19. physics

    The acceleration of a particle moving only on a horizontal plane is given by a= 3ti +4tj, where a is in meters per second-squared and t is in seconds. At t = 0s, the position vector r= (20.0 m)i + (40.0 m)j locates the particle, which then has the velocity

    asked by amy on February 24, 2012
  20. physics

    The acceleration of a particle moving only on a horizontal plane is given by a= 3ti +4tj, where a is in meters per second-squared and t is in seconds. At t = 0s, the position vector r= (20.0 m)i + (40.0 m)j locates the particle, which then has the velocity

    asked by amy on February 24, 2012
  21. Calculus

    a solid has as its base the region bounded by the curves y = -2x^2 +2 and y = -x^2 +1. Find the volume of the solid if every cross section of a plane perpendicular to the x-axis is a trapezoid with lower base in the xy-plane, upper base equal to 1/2 the

    asked by James on August 29, 2017
  22. Calculus (Volumes)

    A solid has as its base the region bounded by the curves y = -2x^2 +2 and y = -x^2 +1. Find the volume of the solid if every cross section of a plane perpendicular to the x-axis is a trapezoid with lower base in the xy-plane, upper base equal to 1/2 the

    asked by Peterg on August 29, 2017
  23. U.S History

    Do you agree with my teacher??? The thing that is wrong is they say "Islamist" are terrorist ever since 9/11; and they are not the ones who took over the plane and crashed the twin towers. Also, there is no such thing as Islam terrorism could i say

    asked by Olive on October 18, 2013
  24. Physics

    Our teacher gave us a scenario we have to prepare to solve for a lab tomorrow: He has one of those toy flying airplanes suspended from the ceiling on a string of some length. He is going to charge it and start it spinning, and we have to figure out how

    asked by Lauren on March 11, 2008
  25. physics

    A batter hits a baseball so that it leaves the bat at a speed V0 = 60.0 m/s at an angle of 42 degrees as measured from the horizontal. Take g to be 9.8 m/s^2 as usual. a. Find the position of the ball, and the magnitude and direction of its velocity at

    asked by Sandra on May 19, 2019
  26. math

    A plane flies 540 miles for 2 hours in the direction of the wind. Then it turns around and flies 690 miles for 3 hours against the same wind. Find the speed of the plane in still air and the wind speed.

    asked by Anonymous on August 10, 2015
  27. Physics

    A 1.2 -long steel rod with a diameter of 0.50 hangs vertically from the ceiling. An auto engine weighing 4.7 is hung from the rod. By how much does the rod stretch?

    asked by Coco on November 22, 2012
  28. science

    If a penny prior to 1982 weighted 3.1 grams and a current one weighs 2.5 grams how many pennies weighing 3.1 and 2.5 will I need in a combination of ten in total to have 25 grams??

    asked by Mary on November 21, 2016
  29. Physics

    A force of 580 N is needed to be applied on a rope at an angle of 30 to the horizontal in pulling a crate with a constant velocity across a horizontal plank. What is the mass of the crate if the coefficient of kinetic friction is o.25?

    asked by Nimfa on November 28, 2011
  30. physics

    A 1500-N uniform boom at = 61.0° to the horizontal is supported by a cable at an angle θ = 29.0° to the horizontal as shown in the figure below. The boom is pivoted at the bottom, and an object of weight w = 2350 N hangs from its top.

    asked by ashley on October 29, 2012
  31. furthermathematics

    a particle is projected at an angle tita to the horizontal with an initial velocity U.if the maximum horizontal distance travelled is 20m and the greatest height reached is 10m.find U and Tita

    asked by azeezat on May 21, 2014
  32. physics

    An object is launched at an angle of 78º above the horizontal with an initial speed of 120 m/s. Find (a) the maximum altitude reached by the object, (b) its total time of flight, and (c) its horizontal range

    asked by Donavan on May 21, 2017
  33. Physics

    A cannon is fired with a muzzle velocity of 24.6 m/s with the cannon barrel at an angle of 50.0 degrees with the horizontal. Find the horizontal distance that the cannonball will travel. The answer is supposed to be 60.8 m, but I keep getting 31.3 m. How

    asked by Grace on October 7, 2018
  34. physics

    A shotputter throws the shot with an initial speed of 15.5 m/s at a 32.0 degree angle to the horizontal. Calculate the horizontal distance traveled by the shot if it leaves the athlete's hand at a height of 2.20 m above the ground.

    asked by brenda on September 22, 2010
  35. Physics

    A projectile is fired with an initial velocity of 300m/s.upward at an angle of 30 degree with horizontal from a point 80m above the level plain. What horizontal distance will it cover before it strikes the plain?

    asked by Luis joshua on July 21, 2014
  36. Physics

    A 1200 lb sleigh is pulled along a horizontal surface at uniform speed by means of a rope that makes an angle of 30 degrees above the horizontal. If the tension in the rope is 100 lb., what is the coefficient of friction?

    asked by Lian on November 21, 2016
  37. physics

    after a golf ball is hit it takes off with an initial speed of 23.4 m/s and at an angle of 43.0 with respect to the horizontal the gold field is flat and horizontal. neglecting air resistence how far will the ball fly

    asked by jen on May 22, 2012
  38. Physics

    A tennis player strikes a ball when it is 2.20m above the ground, with a velocity 18.7 m/s at 20 degrees above the horizontal. The net is 5m away horizontally and it is 0.90m high. after 0.37 seconds, what is the direction of the ball with respect to the

    asked by S on January 28, 2016
  39. physics

    a man having a mass of 60 kg exerts a horizontal force of 200 newton in pushing a 90 kg object a distance of 60 meters along horizontal floor. he does this at constant velocity in 3 seconds.the weight of man will be?

    asked by sannan on May 30, 2017
  40. Re: PHYSICS

    A man (weighing 915 N) stands on a long railroad flatcar (weighing 2805 N) as it rolls at 18.0 m/s in the positive direction of an x axis, with negligible friction. Then the man runs along the flatcar in the negative x direction at 40.00 m/s relative to

    asked by COFFEE on February 27, 2007
  41. physics

    Save Two children hang by their hands from the same tree branch. The branch is straight, and grows from the tree trunk at an angle of 27 degrees above the horizontal. One child, with a mass of 39 kg is hanging 1.50 m along the branch from the tree trunk.

    asked by george on November 17, 2014
  42. Physics

    A ball is shot from the ground into the air. At a height of 9.1 m, the velocity is observed to be v = (6.6 + 5.7 ) m/s, with horizontal and upward. (a) To what maximum height does the ball rise? m (b) What total horizontal distance does the ball travel? m

    asked by Rachel on February 5, 2013
  43. Physical science.

    A skydiver who jumps out of a plane that has a forward velocity of 40 m/s. That means that the skydiver has a forward velocity of 40m/s. Ignore the air resistance. The questions: What difference is there between the downward velocities of the skydiver who

    asked by Hannah on September 28, 2012
  44. Physics

    Two children hang by their hands from the same tree branch. The branch is straight, and grows out from the tree trunk at an angle of 27.3° above the horizontal. One child, with a mass of 40.8 kg, is hanging 1.24 m along the branch from the tree trunk. The

    asked by Kelsey on November 16, 2011
  45. physics (clear answer)

    Two children hang by their hands from the same tree branch. The branch is straight, and grows out from the tree trunk at an angle of 26.1° above the horizontal. One child, with a mass of 43.6 kg, is hanging 1.31 m along the branch from the tree trunk. The

    asked by jason on April 3, 2014
  46. physics

    Two children hang by their hands from the same tree branch. The branch is straight, and grows out from the tree trunk at an angle of 27.1° above the horizontal. One child, with a mass of 42.4 kg, is hanging 1.22 m along the branch from the tree trunk. The

    asked by michelle on November 23, 2010
  47. Physics

    A uniform plank of length 4.1 m and weight 240 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support. To what distance x can a person who weighs 445 N walk on the overhanging part of the plank before it just begins to

    asked by Jennifer on March 23, 2015
  48. Physics

    A uniform plank of length 5.0 m and weight 217 N rests horizontally on two supports, with d = 1.06 m of the plank hanging over the right support. To what distance, x, can a person who weighs 427 N walk on the overhanging part of the plank before it just

    asked by Pete on November 15, 2010
  49. help

    A big luxury car weighing 1.96 x 104 N (about 4400 lb), travelling in the x direction makes a fast stop; the x component of the net force acting on it is -1.50x 104 N. What is its acceleration?

    asked by Anonymous on September 22, 2014
  50. Chemistry

    I did a lab in chemistry about weighing table salt and sand and mixing it with water and pouring it through a funnel. One of my lab quetions was, What are some possible sources of error in this activity? First of all, I don't know what this question means.

    asked by Jennifer on August 28, 2010
  51. Science

    Person weighing 650N lies on a bed of nails,each nail has area of 1m2 Assume 4Nm^-2 pressure is painful what is the smallest number of nails they could lay on and not be hurt

    asked by Bill on April 9, 2013
  52. AP Physics

    A student weighing 700 N climbs at constant speed to the top of an 8 m vertical rope in 10 s. The average power expended by the student to overcome gravity is most nearly 1. P = 560 W. 2. P = 87.5 W. 3. P = 5, 600 W. 4. P = 1.1 W. 5. P = 875 W.

    asked by jeff on February 26, 2011
  53. physics

    A student weighing 700 N climbs at constant speed to the top of an 8 m vertical rope in 10 s. The average power expended by the student to overcome gravity is most nearly 1. P = 560 W. 2. P = 87.5 W. 3. P = 5, 600 W 4. P = 1.1 W. 5. P = 875 W

    asked by ally on February 25, 2011
  54. Math

    A plane flies out of city A traveling an average of 325 mph, and reaches city B in 3 hours 24 minutes. On the return flight there is a tail wind that increases the plane's speed so it takes only 3 hours and 15 minutes to fly back to city A from city B.

    asked by Hannah Montana on May 23, 2011
  55. science

    A skier with a mass of 60.0 kg starts from rest and skis down an icy (frictionless) slope that has a length of 53.0 m at an angle of 25.4° with respect to the horizontal. At the bottom of the slope, the path levels out and becomes horizontal, the snow

    asked by Anonymous on June 15, 2016
  56. Physics

    A dockworker loading crates on a ship finds that a 25-kg crate, initially at rest on a horizontal surface, requires a 70-N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 54 N is required to keep it moving

    asked by Doug on October 2, 2018
  57. Physics

    A 10cm times 10cm times 10cm wood block with a density of 700kg/m^{3} floats in water. What is the distance from the top of the block to the water if the water is fresh? weight= density*volume*g weight=700*(0.001)*9.81 weight=6.86newton

    asked by ana on November 17, 2009
  58. physics

    A dart gun is fired while being held horizontally at a height of 1.38m above ground level, and at rest relative to the ground. The dart from the fun travels a horizontal distance of 7.76. A child holds the same gun in a horizontal position while sliding

    asked by Mimi on September 4, 2010
  59. precalculus

    Berry is standing at the edge of a hill that slopes downward and to the right. He notices that for every 5 feet you go in a horizontal direction, the hill drops by 2 feet. Berry places a ball at the edge of the hill (the origin of the coordinate system),

    asked by Anonymous on June 10, 2013
  60. maths

    The relationship between the vertical height and the horizontal distance of a ball thrown at 45 degree is given by the equation y = x - x^2/50, where y is the vertical height and x is the horizontal distance. (a) Find the maximum vertical height reached.

    asked by Shane on September 1, 2013
  61. physics

    A block of mass m1 = 2.4 kg slides along a frictionless table with a speed of 8 m/s. Directly in front of it, and moving in the same direction, is a block of mass m2 = 5.0 kg moving at 2.8 m/s. A massless spring with spring constant k = 1140 N/m is

    asked by steven on October 17, 2014
  62. Physics

    A projectile is launched with an initial velocity of 268 m/s, at an angle of 45 degrees above the horizontal. At a certain point, A, in its motion, its velocity angle is 17 degrees above the horizontal. At another point, B, later in its motion, its

    asked by Bill on October 19, 2009
  63. Dynamics

    A 5.1 oz baseball is hit from 2 ft above the ground. It has an initial velocity of 165 ft/s at an angle 40 degrees above horizontal. Find the Kinetic Energy of the ball at its maximum height. Work: At max height, the vertical velocity is zero. the

    asked by Jimmy on February 23, 2016
  64. chemistry

    A piece of magnesium weighing 48 grams is burned in air n 80 gram of magnesium oxide is formed. what mass of oxygen combined with the magnesium is in the reaction?

    asked by Rodney on March 23, 2014
  65. physics

    A plane flies 475 km east from city A to city B in 50.0 min and then 986 km south from city B to city C in 1.00 h. For the total trip, what are the (a) magnitude (in km) and (b) direction of the plane's displacement, the (c) magnitude (in km/h) and (d)

    asked by tatiana on October 7, 2012
  66. Physics

    The air speed indicator of a plane that took off from Detroit reads 373 km/h and the compass indicates that it is heading due east to Boston. A steady wind is blowing due north at 42.3 km/h. Calculate the speed of the plane with reference to the ground. If

    asked by Emily on January 30, 2011
  67. Physics

    The air speed indicator of a plane that took off from Detroit reads 349 km/h and the compass indicates that it is heading due east to Boston. A steady wind is blowing due north at 46.5 km/h. a) Calculate the speed of the plane with reference to the ground.

    asked by Chris on January 27, 2015
  68. Physics

    A plane flies 407 km east from city A to city B in 44.0 min and then 871 km south from city B to city C in 1.90 h. For the total trip, what are the (a) magnitude (in km) and (b) direction of the plane's displacement, the (c) magnitude (in km/h) and (d)

    asked by Robin on February 9, 2014
  69. Physics

    A plane flies 407 km east from city A to city B in 44.0 min and then 871 km south from city B to city C in 1.90 h. For the total trip, what are the (a) magnitude (in km) and (b) direction of the plane's displacement, the (c) magnitude (in km/h) and (d)

    asked by Tyler on February 10, 2014
  70. physics

    i don't understand the projectile motion...my teacher said...it's a motion of a body confined to a vertical plane, perpendicular to Earth's surface... I don't get it, can anyone explain to me clearly???? plzzzzz....THX!!!! If your teacher said that, she

    asked by Katrina on November 29, 2006
  71. Algebra 1

    When a plane flies into the wind, it can travel 3000mi in 6 hr. When it flies with the wind, it can travel the same distance in 5 hr. Find the rate of the plane in still air and the rate of the wind.

    asked by Ru on February 24, 2011
  72. physics repost

    A player kicks a football with an initial velocity of 3.00 m/s at an angle of 60.0 above the horizontal. What is the horizontal distance traveled by the football? 2(3.00)(cos60)/9.80 (3.00)(cos60)(.530219635) 0.795m ___________________________________ "The

    asked by Jon on April 3, 2008
  73. Math

    an aircraft flew 2 hours with the wind. the return trip took 3 hours against the wind. if the speed of the plane in still air is 140 miles per hour more than the speed of the wind, find the wind speed and the speed of the plane in still air

    asked by help on April 26, 2016
  74. physic

    Q: a model rocket was launched and measurements of its height and horizontal distances from the launched pad were taken as shown in the table horizontal distance from the launch pad/m : 0,1,2,3,4,5,6,7,8,9,10,11. vertical distance from the launch pad/m:

    asked by Aya Muhammed on November 7, 2014
  75. Physics

    A shot-putter with an initial speed of 16m/s at 32 degree angle to the horizontal. Calculate the horizontal distance traveled by the shot if it leaves the athletes hand at a height of 2.05m above the ground?

    asked by Mrs. Jones on June 10, 2012
  76. Physics

    Two water jets are emerging from a vessel at a height of 50 centimeters and 100 centimeters. If their horizontal velocities at the point of ejection are 1 meter/second and 0.5 meters/second respectively, calculate the ratio of their horizontal distances of

    asked by Lauren01 on February 22, 2012
  77. physic

    a projectile is fired from the ground level with a velocity of 500ms at 30 degree to the horizontal. Determine 1 it's horizontal range 2 the greatest vertical height reached 3 the time taken to reach this height (g=10mls2

    asked by babagana on February 28, 2015
  78. physics

    A 1300-N uniform boom at phi = 64.0° to the horizontal is supported by a cable at an angle θ = 26.0° to the horizontal as shown in the figure below. The boom is pivoted at the bottom, and an object of weight w = 2250 N hangs from its top.

    asked by Anonymous on June 16, 2013
  79. Physics

    A Force,F=10N,applied at an angle of 37 degree above the horizontal,moves a crate a distance of 5m along a rough horizontal surface.A frictional force of 5N opposes the motion.what is the change in kinetic energy?

    asked by Joel on February 18, 2011
  80. Calculus test tomorrow

    A plane flying with a constant speed of 24 km/min passes over a ground radar station at an altitude of 5km 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 4 minutes later? I know

    asked by jimmy on March 8, 2007
  81. physics

    a point charge q is located btween two earthed intersecting conducting planes that are inclined at 60 degree to each other .determine the number of image charges and their location .

    asked by spl on October 20, 2014
  82. Physics

    A box of textbooks of mass 25.3 kg rests on a loading ramp that makes an angle (ALFA) with the horizontal. The coefficient of kinetic friction is 0.260 and the coefficient of static friction is 0.330 . A) As the angle (ALFA) is increased, find the minimum

    asked by Jasijo on November 18, 2006
  83. math

    if I am traveling by plane from Marshfield to Minnepolis (150 Statue miles) which equals 172.5 nautical miles. Our true course is set at 207 degrees. Theresa os a wind blowing from 90 degrees at 10 knots. Normally the plane travels at 100 knots per hour,

    asked by Theresa on October 31, 2009
  84. math

    A car moving with a velocity of 20m/s at 30 degree to the horizontal,what is the component of the velocity along the horizontal?

    asked by prech on August 12, 2015
  85. Algebra

    I need the horizontal asymptote for f(x) = (x)/(x^2 -4) Can someone please show me. I already figured out that The y-intercept is 0. The vertical asymptotes are x = -2, x = 2 So now all i need is horizontal asymptote for f(x) = (x)/(x^2 -4)

    asked by Angie on August 5, 2009
  86. PHYSICS

    A force of 25.0 N acts at an angle of 25° to the horizontal. Find the horizontal and vertical components of the force.

    asked by Sarah on December 5, 2012
  87. math

    A car travels 55 miles per hour and a plane travels 15 miles per minute. How far does the car travel when the plane travels 500 miles?

    asked by Khari on December 14, 2009
  88. ma

    A car travels 55 miles per hour and a plane travels 15 miles per minute. How far does the car travel when the plane travels 500 miles?

    asked by kely on September 1, 2012
  89. physics

    Two blocks each of mass 3.65 kg are fastened to the top of an elevator as in the figure. (a) If the elevator accelerates upward at 1.48 m/s2, find the tensions T1 and T2 in the upper and lower strings. (p4.21a1), enter the answer for T2, the tension in the

    asked by Anonymous on October 5, 2012
  90. physics

    In a city grid, each block on the east-west streets is 180 meters long. Each block on the north-south streets is also 180 meters long. A walker walks 4 blocks north and then 3 blocks east. How much farther did the walker travel than the actual distance

    asked by Shelby on June 27, 2016
  91. physics

    Two blocks each of mass 3.34 kg are fastened to the top of an elevator as in the figure. (a) If the elevator accelerates upward at 1.31 m/s2, find the tensions T1 and T2 in the upper and lower strings. (p4.21a1), enter the answer for T2, the tension in the

    asked by lib on October 3, 2012
  92. physics

    Two blocks each of mass 3.65 kg are fastened to the top of an elevator as in the figure. (a) If the elevator accelerates upward at 1.48 m/s2, find the tensions T1 and T2 in the upper and lower strings. (p4.21a1), enter the answer for T2, the tension in the

    asked by Anonymous on October 4, 2012
  93. Physics

    In a city grid, each block o the east-west streets is 180 meters long. Each block on the north-south streets is also 180 meters long. A walker walks 4 blocks north and then 3 blocks east. How much father did the walker travel than the actual distance

    asked by Charity on May 21, 2013
  94. Fluid Mechanics

    Water enters a turbo-machine at a velocity 12 ft/s. The flow occurs in the horizontal plane. The inside diameters of the inlet and exit pipes are 1 ft and 2 ft, and the gage pressures at the inlet and exit are 10 psi and 5 psi, respectively. The machine is

    asked by Bob on June 11, 2012
  95. Physics

    In Figure 5-66, a force F of magnitude 13 N is applied to a FedEx box of mass m2 = 1.0 kg. The force is directed up a plane tilted by θ = 37°. The box is connected by a cord to a UPS box of mass 3.0 kg on the floor. The floor, plane, and pulley are

    asked by Rachel on February 20, 2013
  96. physics

    A transport plane takes off from a level landing field with two gliders in tow, one behind the other. The mass of each glider is 700n , and the total resistance (air drag plus friction with the runway) on each may be assumed constant and equal to 2600n .

    asked by erl on October 24, 2011
  97. physics

    A transport plane takes off from a level landing field with two gliders in tow, one behind the other. The mass of each glider is 700 , and the total resistance (air drag plus friction with the runway) on each may be assumed constant and equal to 2600 . The

    asked by erl on October 24, 2011
  98. maths

    A plane is flying at 31,348 feet. It needs to rise to 36,000 feet in two stages. In stage 1, it rises 5% of its initial altitude of 31,348 feet. In stage 2, it rises at a rate of 140.3 feet per minute. How many minutes does it take for the plane to rise

    asked by roma on May 24, 2016
  99. MATHS

    A plane is flying at 31,348 feet. It needs to rise to 36,000 feet in two stages. In stage 1, it rises 5% of its initial altitude of 31,348 feet. In stage 2, it rises at a rate of 140.3 feet per minute. How many minutes does it take for the plane to rise

    asked by roma on May 24, 2016
  100. Physics

    A 10-kg box is at rest on a horizontal frictionless surface, at the end of an unstretched horizontal spring with constant k = 4000 N/m. The mass is then quickly struck with a hammer that imparts an impulse along the horizontal direction, compressing the

    asked by Taylor on February 18, 2014