Thursday

April 2, 2015

April 2, 2015

Number of results: 61,824

**Physics - Range of projectile motion**

What properties of projectile motion must you apply when deriving an equation for the range of a projectile? (is it the trignometric identity??)
*August 21, 2010 by Shaila*

**Physics **

A projectile is launched at an angle of 34.0o above the horizontal. The projectile has a mass of 1.50 kg and is given an initial speed of 20.0 m/s. a) What is the initial kinetic energy of the projectile? b) By how much does the gravitational potential energy of the projectile...
*May 30, 2014 by John*

**Physics**

Which of the following statements about projectile motion is not correct? a)The acceleration is constant and in one direction. b)The only force is gravity. c)In projectile motion, the motion can be broken down into perpendicular components that are interdependent. d)All of ...
*October 14, 2012 by Lewis*

**physics**

True/False (#1 only) 1)The horizontal motion of a horizontally launched projectile affects its vertical motion. False 2)The path of a projectile through space is called its. Trajectory
*April 1, 2008 by Jon*

**Science - Physics**

When a projectile is fired horizontally, which of the components of its motion is (A) motion at constatnt speed (B) uniformly accelerated motion (C) If the initial velocity of the projectile is increased, what effect will this have on the time it takes the projectile to fall ...
*December 6, 2006 by Nicole*

**physics/ 2D motion**

A projectile of mass 0.539 kg is shot from a cannon. The end of the cannon’s barrel is at height 6.4 m, as shown in the figure. The initial velocity of the projectile is 9 m/s . How long does it take the projectile to hit the ground? Answer in units of s
*September 25, 2011 by meagan*

**Physics**

Q Exactly 2.7s after a projectile is fired into the air from the ground ,it is observed to have a velocity v = (8.8i+4.5 j) m/s where the x-axis is horizontal and the y axis is positive upward . a)Determine the horizontal range of the projectile b)Determine the maximum height ...
*September 1, 2012 by Nikitha*

**physics -- projectile motion **

why does a projectile of 45 degrees have the greatest range?
*March 7, 2011 by ashley --- HELP PLEASEE!!!*

**Physics Projectile Motion**

What angle (from earth) should one shoot a projectile so that it reaches it's maximum?
*November 8, 2012 by Leslie*

**physics**

i dont 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 dont get it, can anyone explain to me clearly???? plzzzzz....THX!!!! If your teacher said that, she was wrong. I doubt if she...
*November 29, 2006 by Katrina*

**Physics**

The projectile motion is fired with velocity of magnitude vo at the angle feta. Find feta for which the maximum elevation of the projectile is twice its range
*September 22, 2011 by Whitney*

**Physics**

The projectile motion is fired with velocity of magnitude vo at the angle feta. Find feta for which the maximum elevation of the projectile is twice its range
*September 22, 2011 by Whitney*

**physics**

A mass makes a projectile motion on a table (like the one in the projectile motion experiment) with inclination angle of the table as α=6o. The initial velocity and the initial angle are is 100 cm/s and 30 deg. respectively. What is the maximum height hmax ? (sin(6)=0.1, ...
*December 21, 2012 by anonymous*

**Physics**

Analyze the flight of a projectile moving under the influence of gravity (mg) and linear, i.e., laminar- flow drag (fD = bv, with b > 0 constant). Neglect \Phase I"; assume the projectile is launched from the origin at speed v1 and angle 1 above the horizontal. WARNING: ...
*March 2, 2015 by Alyssa*

**Physics**

I failure to find an observation related to motion in two dimension projectile motion. Prove That/Show that maximum range =4Height or Rmax=4H please help me thanks Ahsan Khan
*January 1, 2009 by Muhammad Ahsan Khan*

**Projectile Motion Problem**

A projectile is shot straight up from the earth's surface at a speed of 1.20×10^4 km/h. How high does it go?
*April 5, 2010 by Mike*

**physics**

Suppose we attempt to account for air resistance in our projectile motion in the following (incorrect) way: we alter g so that the acceleration in the y direction is -8 m/s2, and introduce a horizontal acceleration of -3 m/s2. With these changes, find the landing point of a ...
*September 2, 2012 by mitch*

**college physics**

When a projectile lands, the angle made between the projectile and the ground corresponds to which of the following aspects of its motion? a)the direction of the acceleration vector just before impact b)direction of the velocity vector just before impact c)direction of the ...
*April 18, 2012 by CLARE*

**college physics**

When a projectile lands, the angle made between the projectile and the ground corresponds to which of the following aspects of its motion? a)the direction of the acceleration vector just before impact b)direction of the velocity vector just before impact c)direction of the ...
*April 18, 2012 by CLARE*

**pre-calc**

analyzing the motion of a projectile: a projectile is fired from a cliff 200 feet above the water at an inclination of 45 degrees, with a muzzle velocity of 50 feet per second. the height of the projectile above the water is given by h(x)= -0.0128x^2+x+200 where x is the ...
*November 10, 2011 by steph*

**Applying Algebraic Thinking to Data**

Snoopy is in his plane, 4500 ft above ground. he fires a projectile straight up. The Vo of the projectile is 340 ft/s. (after the projectile is fired, it has no acceleration, so its height can be modeled by a "falling body" model). The Red baron is maintaining a constant ...
*April 20, 2012 by Rachelle*

**Physics (projectile motion)**

Projectile fired in earths gravitational field at a height of of 0.90m above ground level, with a horizontal velocity of 9m/s. How far will the ball fly before hitting the ground? How long will the ball stay in the air?
*November 2, 2014 by Darrien*

**physics**

i need 1 question each of this following straight ine motion, free falling body, projectile in the dimension and projectile in two dimension... i need it badly.. our prof need a good example of I
*March 13, 2011 by matt carlo*

**Physics - rojectile Motion (check pls)**

Imagine that you are solving a problem in projectile motion in which you are asked to find the time at which a projectile reaches a certain vertical position. when you solve the problem you find out two different positive values for time that both satisfy the condition of the ...
*August 21, 2010 by Shaila*

**Physics**

This deals with Projectile Motion and I would be glad if someone were to check if my answers are correct. 1. c 2. b 3. a 4. d If air resistance were to be ignored, 1.a projectile that has a horizontal velocity is a)zero b)constant c)increasing d)decreasing 2.a projectile that ...
*January 29, 2015 by Jenice*

**Phoenix**

Projectile motions problems are some of the most important problems you will encounter in this course. Through this discussion, we will solve a projectile motion problem step by step Assume a projectile is launched from ground height over a flat plane, at an angle of 50 ...
*May 10, 2013 by Rick*

**physics**

how can projectile motion be applied in porkour?
*November 30, 2011 by sami*

**physics**

ehich of the following is an example of projectile motion?
*December 15, 2010 by cecilia *

**Physics**

A catapult throws a projectile at a 40.0° angle with a velocity of 26.0 m/s. How high will the projectile reach, and how far away will the projectile land?
*December 18, 2010 by George*

**Physics**

The highest barrier that a projectile can clear is 14.5 m, when the projectile is launched at an angle of 31.0 ° above the horizontal. What is the projectile's launch speed?
*October 15, 2011 by Heather*

**physics**

The highest barrier that a projectile can clear is 15.8 m, when the projectile is launched at an angle of 13.4° above the horizontal. What is the projectile's launch speed?
*October 22, 2011 by Nick*

**physics**

The highest barrier that a projectile can clear is 12.7 m, when the projectile is launched at an angle of 17.5° above the horizontal. What is the projectile's launch speed?
*February 11, 2012 by loweri*

**physics**

The highest barrier that a projectile can clear is 11.5 m, when the projectile is launched at an angle of 15.4° above the horizontal. What is the projectile's launch speed?
*September 9, 2012 by Sharienia*

**physics**

The highest barrier that a projectile can clear is 13.4 m, when the projectile is launched at an angle of 11.0o above the horizontal. What is the projectile’s launch speed?
*June 27, 2013 by brain*

**physics**

A projectile MUST____. List all that apply. a) experience a net downward force b) have a constant speed c) be accelerating d) be changing its velocity e) be moving downward f) have a horizontal motion in addition to a vertical motion
*November 13, 2012 by michael*

**physics**

A projectile MUST____. List all that apply. a) experience a net downward force b) have a constant speed c) be accelerating d) be changing its velocity e) be moving downward f) have a horizontal motion in addition to a vertical motion
*November 13, 2012 by michael*

**general physics**

The highest barrier that a projectile can clear is 18.8 m, when the projectile is launched at an angle of 59.0 ° above the horizontal. What is the projectile's launch speed?
*July 3, 2013 by vinny*

**Physics**

A projectile is launched with an initial speed of 80.0m/s at an angle of 40 degrees above the horizontal. The projectile lands on a hillside 3.80s later. Neglect air friction. What is the projectile's velocity at the highest point of its trajectory? What is the straight-line ...
*September 15, 2014 by Priya*

**Physics - Projectile Motion**

This is going to be hard to explain, but I did an experiment on projectile motion and we had to lauch a marble from 0 degrees to 90 degrees in a 5 degree interval using a projectile launcher with the same velocity each time. We had to investigate the angle which gave the ...
*September 1, 2008 by TK*

**physics**

A projectile was fired out of a lead ejector at an angle of 45 degrees up from horizontal. The projectile velocity was 1000.00 meters per second. How high did it go? and how far did the projectile go?
*May 2, 2013 by john*

**Physics**

A projectile is launched upward at 26m/s at 30 degrees from the horizontal. The whole path of the projectile takes place over level ground. How much time will the projectile be in the air?
*September 28, 2014 by Chelsea*

**science**

If a projectile is fired straight up at a speed of 13m/s. How long does it take to reach the top of its motion? If the acceleration due to gravity is 9.8m/ s motion (squared) answer in units of s
*October 14, 2012 by jessica*

**physics**

A projectile is fired straight up at a speed of 15 m/s. How long does it take to reach the top of its motion? The acceleration of gravity is 9.8 m/s2 .
*October 12, 2011 by Ellen*

**physics**

A projectile is fired straight up at a speed of 15 m/s. How long does it take to reach the top of its motion? The acceleration of gravity is 9.8 m/s2 .
*October 12, 2011 by Ellen*

**Physics **

A projectile is fired from ground level with a speed of 40 m/s at an angle of 30 degrees and hits a building 100m away. What is the time of flight of the projectile? How high above ground does the projectile hit the building? What is the speed of the projectile just before it ...
*February 5, 2012 by Krystal*

**Physics**

A projectile is fired straight up at a speed of 13 m/s. How long does it take to reach the top of its motion? The acceleration due to gravity is 9.8 m/s2 .
*September 11, 2012 by Alex*

**Physics**

A projectile is fired straight up at a speed of 16 m/s. How long does it take to reach the top of its motion? The acceleration of gravity is 9.8 m/s2 . Answer in units of s.
*January 10, 2011 by Michael*

**Physics -.-**

A projectile is shot horizontally at 220 m/s from the top of a 620 m high cliff. A) How long till the projectile hits the ground? B) How far from the base of the cliff does the projectile land? I am gonna be honest. I have no idea how to do any of my Physics homework. ): I ...
*December 19, 2011 by Allison*

**Physics**

A projectile is launched with an initial speed of 40m/s at an angle of 25 degrees above the horizontal. The projectile lands 3 sec. later. Neglect air friction. What is the projectile's velocity at the highest point of it's trajectory? What is the straight line distace from ...
*February 24, 2011 by Lady22*

**physics (please help!)**

A projectile of mass 0.539 kg is shot from a cannon. The end of the cannon’s barrel is at height 6.4 m, as shown in the figure. The initial velocity of the projectile is 9 m/s . How long does it take the projectile to hit the ground? Answer in units of s
*September 21, 2011 by meagan*

**Scinece, Physics**

A boy is throwing a stone from the top of a building. It takes projectile motion and returns to the ground. How to calculate the height of buiding?
*September 25, 2012 by vinayan*

**physics**

a projectile is fired from the top of a building with an initial velocity straight upward at 40m/sec. the top of the building is 50 meters above the ground? a) the maximun height of the projectile above the building b) the time for the projectile to reach the top c) the ...
*October 15, 2011 by daniel*

**PHYSICS**

A Projectile IS FIRED FROM THE TOP OF A BUILDING WITH AN INITIAL VELOCITY STRAIGH UPWARD AT 40.0 M/SEC . THE TOP OF THE BUILDING IS 50.0 METERS ABOVE THE GROUND. A) THE MAXIMUN HEIGHT OF THE PROJECTILE ABOVE THE BUILDING. B) THE TIME FOR THE PROJECTILE TO REACH THE TOP. C) THE...
*October 16, 2011 by HELPPMEEEEEEEEEE*

**physics**

At time t=0 a projectile passes through the point (0,0,192) with a velocity v=10i-2j+16k. Because of spin and gravity, the projectile experiences an acceleration given by a=2i-32k. a. Find the velocity v(t) and position vector R(t) at time t>0. b. At what time t does the ...
*February 23, 2011 by nicole*

**physics**

a projectile with mass (m)=35grams is placed on a vertically positioned spring. the spring constant (k)=6500N/m. the projectile is launched straight up into the air by compressing the spring a distance (x)=8cm.How high does the projectile go?
*October 21, 2013 by javier*

**physics**

a projectile with mass (m)=35grams is placed on a vertically positioned spring. the spring constant (k)=6500N/m. the projectile is launched straight up into the air by compressing the spring a distance (x)=8cm.How high does the projectile go?
*October 21, 2013 by javier*

**physics**

A projectile is fired at an angle of 30ᵒ above the horizontal from the top of the cliff 600 ft high. The initial speed of the projectile is 2000 ft/s. how far will the projectile move horizontally before it hits the level ground at the base of the cliff?
*January 13, 2014 by Anonymous*

**Physics**

A projectile is fired straight up from a cliff which is 200 feet above ground with an initial velocity of 220 ft/sec. Assume that the only force affecting the projectile during flight is from gravity which produces a downward acceleration 32 ft/sec^2. Find an equation from the...
*December 8, 2010 by Marina*

**physics**

For a given velocity of projection in a projectile motion, the maximum horizontal distance is possible only at ө = 45°. Substantiate your answer with mathematical support. 20.5 m/s
*October 23, 2012 by tre*

**physics**

A 3Kg projectile is fired straight upward from earth's surface with a speed that is one-fourth the escape speed. Neglecting air resistance. a) What is the Kinetic energy of this projectile when it is launched? b) what is the gravitational potential energy of this projectile ...
*February 14, 2011 by rick*

**physics**

an astronaut on the moon fires a projectile from a launcher on a level surface so as to get the maximum range. If the launcher gives the projectile a muzzle velocity of 25 m/s what is the range of the projectile?
*January 1, 2008 by melissa*

**Physics**

A projectile is accelerated from rest at point A along a circular track of radius 2 m, as shown in Fig. 5.1. Gravity acts in the z direction. The rate at which the speed of the projectile increases as a function of time, t, is at = 2t ms-2. What is the magnitude of the ...
*October 16, 2014 by Lucy*

**Physics (please help!!)**

Analyze the flight of a projectile moving under the influence of gravity (mg) and linear, i.e., laminar-flow drag (fD = -bv), with b constant). Neglect (phase I); assume the projectile is launched from mthe origin at speed v1 and angle theta1 above the horizontal. WARNING: ...
*March 7, 2011 by Celine*

**Physics (please help!!)**

Analyze the flight of a projectile moving under the influence of gravity (mg) and linear, i.e., laminar-flow drag (fD = -bv), with b constant). Neglect (phase I); assume the projectile is launched from mthe origin at speed v1 and angle theta1 above the horizontal. WARNING: ...
*March 7, 2011 by Celine*

**physics**

A projectile is fired from the origin (at y = 0 m) as shown in the diagram. The initial velocity components are V0x = 310 m/s and V0y = 26 m/s. The projectile reaches maximum height at point P, then it falls and strikes the ground at point Q, which is 20 m below the launch ...
*February 21, 2013 by Anonymous*

**Physics**

The horizontal motion of a horizontally launched projectile affects its vertical motion. (FALSE) A missile launches at a velocity of 30.0 m/s at an angle of 30.0* to the normal. What is the maximum height the missile attains? (11.5 m, I'm not very sure) In calculating the ...
*May 6, 2009 by Patrick*

**physics**

give an example of projectile motion;include in your explantion the term velocity , accleration and displacement orginality in your example will be appreciated?
*March 31, 2011 by chris*

**projectile motion**

A missile is fired upwards from the top of a cliff in a direction making an angle (not known ) with the horizontal. After 20seconds the projectile hits the ground at a point which is 1800metre from the foot of the tower of height 160metres. Find the angle of projection and the...
*June 16, 2014 by tanaiah*

**Physics**

A projectile is launched horizontally with a speed of 80.0 m/s. If the projectile is launched 1.5m above the floor, how long does it take the projectile to hit the floor?
*June 8, 2010 by Lilly*

**Dynamics**

A French artillerist, Captain A. Le Duc, developed an empirical formula for the velocity of a projectile in terms of the distance traveled by the projectile in the bore. For a 155-mm gun this equation is v = 3309s /(70 + s) where s is the distance traveled in the bore in ...
*January 19, 2011 by stan*

**Physics**

A projectile is launched from ground level to the top of a cliff which is 195 m away and 155 m high. If the projectile lands on top of the cliff 9.2 s after it is fired, find the initial velocity of the projectile (magnitude and direction). Neglect air resistance.
*September 21, 2010 by Jamie*

**physics**

A projectile is launched from ground level to the top of a cliff which is 195 m away and 135 m high.If the projectile lands on top of the cliff 6.5 s after it is fired, find the initial velocity of the projectile ( (a)magnitude and (b)direction ). Neglect air resistance.
*November 9, 2010 by bobjahng2*

**physics**

A projectile is launched from ground level to the top of a cliff which is 195 m away and 135 m high.If the projectile lands on top of the cliff 6.5 s after it is fired, find the initial velocity of the projectile ( (a)magnitude and (b)direction ). Neglect air resistance.
*November 11, 2010 by bobjahng2*

**physics**

A ship maneuvers to within 2500m of an island's 1800m high mountain peak and fires a projectile at an enemy ship 610m on the other side of the peak. If the ship shoots the projectile with an initial velocity of 250m/s at an angle of 75 degrees. how close to the enemy ship does...
*October 8, 2010 by Sydney*

**science(physics)**

give an example of projectile motion;include in your explantion the term velocity , accleration and displacement orginality in your example will be appreciated?
*March 31, 2011 by chris*

** physics**

A projectile with mass of 139 kg is launched straight up from the Earth's surface with an initial speed vi. What magnitude of vi enables the projectile to just reach a maximum height of 5.8RE, measured from the center of the Earth? Ignore air friction as the projectile goes ...
*February 28, 2011 by Ugandanmafia*

**physics**

In a ballistic pendulum experiment, projectile 1 results in a maximum height h of the pendulum equal to 2.4 cm. A second projectile causes the pendulum to swing twice as high, h_2 = 4.8 cm. The second projectile was how many times faster than the first?
*March 14, 2010 by Anonymous*

**Physics**

Write a projectile motion problem with the initial condition vi=15 m/s at 50° above the horizontal. Solve this problem for ∆x, max height, and time of flight.
*October 7, 2009 by Help*

**physics urgent please **

Give an example of projectile motion;include in your explantion the term "velocity" , "accleration" and "displacement", orginality in your example will be appreciated?
*March 31, 2011 by chris*

**Physics**

A projectile is launched from ground level to the top of a cliff which is 195m away and 135m high (as shown in the figure ).If the projectile lands on top of the cliff 6.9s after it is fired, find the initial velocity of the projectile a)magnitude b)direction Neglect air ...
*September 12, 2009 by Jannie*

**physics**

A projectile is launched from ground level to the top of a cliff which is 195 m away and 155 m high. If the projectile lands on top of the cliff 9.2 s after it is fired, find the initial velocity of the projectile (magnitude and direction). Neglect air resistance. Calculate ...
*September 22, 2010 by Sam*

**Physics**

A projectile is fired with an initial speed of 31.0 at an angle of 10.0 above the horizontal. The object hits the ground 7.50 later. a. How much higher or lower is the launch point relative to the point where the projectile hits the ground? b. To what maximum height above the ...
*October 15, 2009 by Kelcie*

**Physics**

A projectile is fired with an initial speed of 28.0 m/s at an angle of 65 degrees above the horizontal. The object hits the ground 9.5 seconds later. a) How much higher or lower is the launch point relative to the point where the projectile hits the ground? b) To what maximum ...
*October 19, 2011 by Sara*

**Physics**

A projectile is launched from ground level to the top of a cliff which is 195 m away and 155 m high. If the projectile lands on top of the cliff 9.2 s after it is fired, find the initial velocity of the projectile (magnitude and direction). Neglect air resistance. Also ...
*September 23, 2010 by Sam*

**physics**

a projectile with a muzzle velocity of 550 m/s is fired from the a gun on top of a cliff 460 m above the sea level at a certain angle with respect to the horizontal. if the projectile hits the ocean surface. 49.2 seconds after being fired, determine the horizontal range of the...
*May 4, 2013 by jennierson*

**Physics **

A projectile is fired with an initial velocity of v0 feet per second. The projectile can be pictured as being fired from the origin into the first quadrant, making an angle O with the positive x-axis. If there is no air resistance, then at t seconds the coordinates of the ...
*September 8, 2013 by miley*

**memorial university**

The highest barrier that a projectile can clear is 13.8 m, when the projectile is launched at an angle of 14.9° above the horizontal. What is the projectile's launch speed?
*October 19, 2011 by obinna*

**physics**

A 0.190 kg projectile is fired with a velocity of +705 m/s at a 2.00 kg wooden block that rests on a frictionless table. The velocity of the block, immediately after the projectile passes through it, is +40.0 m/s. Find the velocity with which the projectile exits from the block.
*January 17, 2012 by emma*

**physics**

a projectile is shot up 25 m/s at an angle of 34 degress how high imto the air does the projectile go?
*March 28, 2011 by kane*

**Sindhi**

the velocity of a projectile at its highest point is 40 m/s.if the projectile was in air for 6 second before falling the ground calculate angle of projection of the projectile.
*September 23, 2012 by Asif Khan*

**Physics**

A ship maneuvers to within 2500 m of an island's 1800 m high mountain peak and fires a projectile at an enemy ship 610 m on the other side of the peak, as illustrated in Figure 3-29. If the ship shoots the projectile with an initial velocity of v = 256 m/s at an angle of θ...
*February 27, 2012 by Shawn*

**physics**

An astronaut on the Moon fires a projectile from a launcher on a level surface so as to get the maximum range. If the launcher gives the projectile a muzzle velocity of 23 m/s, what is the range of the projectile? [Hint: The acceleration due to gravity on the Moon is only one...
*November 7, 2010 by ayanna*

**Physics**

A projectile was launched 64° above the horizontal, attaining a height of 10 m. What is the projectile's initial speed?
*November 22, 2011 by nam maurer*

**physics**

Scientists are experimenting with a kind of gun that may eventually be used to fire payloads directly into orbit. In one test, this gun accelerates a 9.7-kg projectile from rest to a speed of 6.5 × 103 m/s. The net force accelerating the projectile is 8.0 × 105 N. How much ...
*June 24, 2013 by BRAD*

**physics**

Scientists are experimenting with a kind of gun that may eventually be used to fire payloads directly into orbit. In one test, this gun accelerates a 7.0 kg projectile from rest to a speed of 4.0 x 103 m/s. The net force accelerating the projectile is 4.9 x 105 N. How much ...
*September 20, 2013 by paul*

**PHYSICS**

Scientists are experimenting with a kind of gun that may eventually be used to fire payloads directly into orbit. In one test, this gun accelerates a 8.9-kg projectile from rest to a speed of 4.2 × 103 m/s. The net force accelerating the projectile is 1.4 × 105 N. How much ...
*March 16, 2014 by Tom*

**Physics**

Scientists are experimenting with a kind of gun that may eventually be used to fire payloads directly into orbit. In one test, this gun accelerates a 1.9-kg projectile from rest to a speed of 5.1 × 103 m/s. The net force accelerating the projectile is 8.6 × 105 N. How much ...
*September 25, 2014 by Sam*

**mechanical**

n projectile motion if range is the maximum, then what will be the height?.
*July 3, 2011 by Avais*

**Physics**

A paladin howitzer fires a 46.00 kg projectile towards a 1000 kg metal block resting on a frictionless surface. Just before impact, the projectile is traveling with a horizontal velocity of 529 m/s. After the collision, the embedded projectile and the metal block move along ...
*February 2, 2015 by Samiboo711*

**physics**

Scientists are experimenting with a kind of gun that may eventually be used to fire payloads directly into orbit. In one test, this gun accelerates a 4.8-kg projectile from rest to a speed of3.9 103 m/s. The net force accelerating the projectile is 4.8 105 N. How much time is ...
*October 31, 2013 by Anonymous*

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