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August 1, 2014

Search: A 15-ft ladder leans against a wall. The bottom of the ladder is 4 ft from the wall. The bottom is pulled out 3 ft farther. How much does the top end move down the wall?

Number of results: 9,630

Business
what is the concept of the "ladder of inference," any example?
January 5, 2010 by Bryan

9th grade
Why isnt a ladder a good model for an atom?
November 22, 2010 by Kayka

biology
How to make structure of DNA ladder like
February 3, 2013 by Petunia

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 she exerts on the ...
January 2, 2013 by Tim

advanced algebra quartic
leaning ladders- a nasty quartic Two ladders leaning in opposite directionsbetween two walls.Each ladder touching the base of the opposite wall Ladders are 40 ft and 60 ft respt. cross at hy of 10 ft , h, what is the distance tween walls w ?
May 12, 2007 by fredd

physics
While trying to decide where to hang a framed picture, you press it against the wall to keep it from falling. The picture weighs 5.0 N and you press against the frame with a force of 6.0 N at an angle of 40 ° from the vertical. (a) What is the direction of the normal force ...
March 15, 2012 by tharidu

Business
can their be such thing as a sort of a reverse "ladder of inference", if that's possible
January 7, 2010 by Bryan

foundation of science
what parts of the ladder corrsponds to the energy level of the atom?
September 26, 2010 by tori

physics
a 40kg girl climbs a vertical ladder at .5 m/s. what is her power output?
November 7, 2011 by jill

physics
a 15 kg bucket is raised to paint a ladder with an acceleration of 3 m/s.^2 what is the tension in the rope?
April 10, 2012 by Leah

Physics
You are holding a bulletin board weighing 6.46 N in place against a wall while your friend secures it to the wall. To keep it from slipping, you apply a force perpendicular to the bulletin board, pressing it directly into the wall. How large must this force be if the ...
February 13, 2012 by Anonymous

Physics
You are holding a bulletin board weighing 6.46 N in place against a wall while your friend secures it to the wall. To keep it from slipping, you apply a force perpendicular to the bulletin board, pressing it directly into the wall. How large must this force be if the ...
February 13, 2012 by Mike

Physics
You are holding a bulletin board weighing 7.01 N in place against a wall while your friend secures it to the wall. To keep it from slipping, you apply a force perpendicular to the bulletin board, pressing it directly into the wall. How large must this force be if the ...
October 1, 2013 by Erica

Physics
You are holding a bulletin board weighing 7.01 N in place against a wall while your friend secures it to the wall. To keep it from slipping, you apply a force perpendicular to the bulletin board, pressing it directly into the wall. How large must this force be if the ...
October 2, 2013 by Erica

Science-7th grade
the sides of the DNA ladder are made up of molecules of the sugar______and_______.
January 11, 2009 by Pamela

Physics
what is your power output if you climb a 2m ladder in 10 seconds? suppose your height is 565N.
April 9, 2012 by Chita_Cheee

science
Calculate the amount of potential energy a 3 kg can of paint has when it is placed on top of a ladder that is 2.5 m in height 1.2j ?
May 5, 2011 by Anonymous

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 toward the wall, and back...
April 12, 2009 by Michael

physics
A girl of mass 60 kg throws a ball of mass 0.8 kg against a wall. The ball strikes the wall horizontally with a speed of 11 m/s, and it bounces back with this same speed. The ball is in contact with the wall 0.05 s. What is the average force exerted on the wall by the ball? A...
June 24, 2009 by larry

Physics
A girl of mass 55 kg throws a ball of mass 0.8 kg against a wall. The ball strikes the wall horizontally with a speed of 25 m/s, and it bounces back with the same speed. The ball is in contact with the wall 0.05 s. What is the average force exerted on the wall by the ball? A) ...
March 30, 2012 by Alex

Math
A 24 ft shadow is cast by a ladder that is 7 ft tall. Find the tangent of the angle that the sunbeam makes with the ground
June 14, 2012 by China

science
A 50 N girl climbs the ladder with a 60 N painting in 5 seconds. She has done 120 J of work. How much power does she need?
December 9, 2013 by jane

physics
A solid uniform 45.0 kg ball of diameter 32.0 cm is supported against a vertical frictionless wall using a thin 30 cm wire of negligible mass. (a) make a free body diagram for the ball and use it to find the tension in the wire and (b) how hard does the ball push against the ...
June 11, 2010 by L

math trigonometry
1. Two straight roads intersect to form an angle of 75". Find the shortest distance from one road to a gas station on the other road 10o0 m from the junction. 2. Two buildings with flat roofs are 60 m apart. From the roof of the shorter building, 40 m in height, the angle of ...
January 4, 2013 by mikee

poetry
what is the theme for Robert Frost's poem "After Apple-Picking"? My long two-pointed ladder’s sticking through a tree Toward heaven still, And there’s a barrel that I didn’t fill Beside it, and there may be two or three Apples I didn’t pick upon some bough. But I am done with ...
November 20, 2011 by Shellby

physics
At an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. People sit in seats facing the axis, their backs against the outer wall. At one instant the outer wall moves at a speed of 3.2 m/s, and an 83 kg person feels a 525 N force ...
October 1, 2008 by Jen

physics
At an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. People sit in seats facing the axis, their backs against the outer wall. At one instant the outer wall moves at a speed of 3.04 m/s, and an 65.2-kg person feels a 290-N ...
October 8, 2012 by Jane

Physics
At an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. People sit in seats facing the axis, their backs against the outer wall. At one instant the outer wall moves at a speed of 3.44 m/s, and an 64.3-kg person feels a 277-N ...
October 3, 2013 by Tyler

trigonomitry
A pole 7 meters long is placed against a wall at an angle of 45 degrees, what is the height of the wall
February 14, 2008 by person

language arts
There is this paper that my teacher gave me and its sooooooo confusing.The directions say:change the word at the bottom of each ladder to the word at the top.Change one letter at a time.Rules:1.If the letter is to the right of the step,remove the word and put another letter in...
May 31, 2010 by jacob

english
Does this sound alright with a modifier in the sentence. Standing on a ladder,I was just able to reach the high window.
August 3, 2009 by betty

math
my daughter in Grade 2'her project is "MAKE A LADDER OF 8 STEPS WITH NUMBERS TO FIND ASUM TOTAL.I Can't undestood it.
June 28, 2011 by shalini

science
How much total work is done by 450-N girl who lifts a 52-N backpack 1.2m to her shoulders and then climbs a ladder 3.0m high?
November 7, 2012 by Joe

Physics
A block of mass 9.00 kg is pushed up against a wall by a force P that makes a 50.0° angle with the horizontal as shown below. The coefficient of static friction between the block and the wall is 0.245. Determine the possible values for the magnitude of P that allow the block ...
June 6, 2012 by Kathy

Dynamics
The rotor is an amusement park ride where a person enters the Rotor when it is stationary and stands against the wall with their back against the wall. The rotor then begins to spin around a vertical axis. After reaching cruising speed, the floor drops away and the patron is ...
September 28, 2012 by Connor

physical science
a 180 lb person climbs a ladder to a point which is two times the radius of the earth high. how much does he weigh there?
March 1, 2011 by tam

Greetings
I have a Agility ladder and I do what called fast feet all the way down explain this drill. Physical Education
October 28, 2011 by Michael

Physics
If you stood atop a ladder that was so tall that you were twice as far from Earth's center, how would your weight compare with its present value?
January 14, 2014 by Lila

Physics
Two spheres of equal mass are thrown against a wall with equal velocities. One sphere rebounds with 75% of its original speed, while the other sticks to the wall. Which imparted a greater impulse to the wall, the sticky ball or the rebounding ball? Justify your answer.
November 19, 2013 by Ashley

physics
a boy with a mass of 60kg climbs a 10m vertially up a ladder. A) how far did he travel? B) how much work is done? C) what are the energy changes here?
January 17, 2011 by Anonymous

physics
How much power is used by a 50Kg athlete in climbing a 10m high ladder in 9.8 sec? 1000 J 2000 J 3000 J 4000 J
April 19, 2011 by usman

Physics
In a popular amusement park ride, a rotating cylinder of radius 3.0 m is set in rotation at an angular speed of 0.80 revolutions per second. The floor then drops away, leaving the riders suspended against the wall in a vertical position. (a) What minimum coefficient of ...
October 20, 2011 by harrison

algebra
A board is leaning against a building so that the top of the board reaches a height of 18 feet. The bottom fo the board is on the groung 4 feet away from the wall. What is the slope of the board as a positive number?
September 30, 2012 by Kaitlyn

carpentry
what is the angle of a ladder with a 4 metre vertical and a 1 metre horisontal
July 9, 2012 by jan

Physics
A 70 kg man carrying a 10 kg suit case climbing a ladder of 5 m in two minute, power developed by the man is (g=10 m/s2 ).?
June 20, 2011 by Stephen

physics
In a church choir loft, two parallel walls are 5.70 m apart. The singers stand against the north wall. The organist faces the south wall, sitting 0.900 m away from it. So that she can see the choir, a flat mirror 0.600 m wide is mounted on the south wall, straight in front of ...
November 30, 2010 by Jessica

science
how do we calculate lateral load of a motorized ladder which carries 250 kg load to a height of 13 mtr at an angle of 70 degree
August 11, 2012 by jeet

geometry
a ladder is 53 inches. how tall is it in feet and inches
March 20, 2012 by melissa

Geometry
If the ladder extends to a length of 158 inches, what is the height of the house rounded to the nearest hundredth of an inch? Type the numeric answer only in the box below.
June 17, 2012 by Sarah

physics
A 3.3-kg ball of clay with a speed of 14 m/s is thrown against a wall and sticks to the wall. What is the magnitude of the impulse exerted on the ball?
June 12, 2012 by lanre

physics
A person is trying to judge whether a picture (mass = 2.27 kg) is properly positioned by temporarily pressing it against a wall. The pressing force is perpendicular to the wall. The coefficient of static friction between the picture and the wall is 0.790. What is the minimum ...
February 18, 2014 by Anonymous

physics 1
A person is trying to judge whether a picture (mass = 2.27 kg) is properly positioned by temporarily pressing it against a wall. The pressing force is perpendicular to the wall. The coefficient of static friction between the picture and the wall is 0.790. What is the minimum ...
February 18, 2014 by Anonymous

physic 1
A person is trying to judge whether a picture (mass = 2.27 kg) is properly positioned by temporarily pressing it against a wall. The pressing force is perpendicular to the wall. The coefficient of static friction between the picture and the wall is 0.790. What is the minimum ...
February 18, 2014 by Anonymous

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 m/s b 200 m/s c 300 ...
May 20, 2012 by TOM

psychology
If you were attempting to explain to Jake how a chromosome looks, you would most accurately tell him it's like a A cone B flexible rod C sphere D ladder I believe the correct answer is D
December 16, 2008 by ourania

Physics
Two identical charged particles of mass m=1.6 kg and electric charge Q=-5.2 μC are placed on an frictionless 26° incline. One of them falls down to the bottom and stops against the wall. The other stays at rest in the middle of the incline as shown in Figure. Find is the ...
June 13, 2012 by Alex

physics
a pole 10m long rests slantly against a vertical wall ab making 60 degrees with the horizontal (ground). find how faris the foot of the pole from the wall
June 4, 2014 by aakaash

physics
IP You want to nail a 2.4kg- board onto the wall of a barn. To position the board before nailing, you push it against the wall with a horizontal force to keep it from sliding to the ground What happens to the force of static friction if you push against the wall with a force ...
November 11, 2010 by mathhelp

Pre Calculas
Complete the identity sin theta / cos theta + cos theta / sin theta = ? Do you mean (sin theta/cos theta) + (cos theta/sin theta) ? That would equal tan x + cot x = tan x + (1/tan x) = (tan^2 x + 1)/ tan x I don't see any way to further simplify it. 1/(cosx)(sinx) or sin^2x+...
June 10, 2006 by Robert

physics
Which direction will the support force by the wall point when the force diagram is drawn? The book is held motionless against a wall by yout hand. (Up, down, legt or right?)
July 19, 2012 by dominique

physics Classical Mechanics
A stick of length l =70.0cm rests against the wall. The coefficient of static friction between stick and wall and between the stick and the floor are equal. The stick will slip off the wall if placed at an angle greater than theta = 41 degrees. What is the the coefficient of ...
December 10, 2013 by Hil

5th grade
what if santa ws in the middle of a ladder then went up three steps then went down 5 and went up 10.it is
December 4, 2008 by kolo

English
There is a shelf on the wall. He seems to use it as a bookshelf. On the shelf, there are two books. We can say he enjoys reading books. A basketball is on his uniform. We can see the top T-shirt and the bottom trunk. He seems to enjoy playing basketball. Write 'enjoy playing ...
June 7, 2014 by rfvv

physics
A 90 kg mover climbs a ladder to a height of 8 m in 32 s. Find the power ratingof the mover. I solved by using P= mgh/t and came up with 220.5 watts. Is this correct or am I suppose to use P=w/t?
December 4, 2011 by Mack

physics
A 13 N horizontal force pushes a block weighing 4.5 N against a vertical wall (Fig. 6-26). The coefficient of static friction between the wall and the block is 0.68, and the coefficient of kinetic friction is 0.35. Assume that the block is not moving initially. In unit-vector ...
March 6, 2011 by karim

physics
A 10 N horizontal force pushes a block weighing 4.9 N against a vertical wall (Fig. 6-26). The coefficient of static friction between the wall and the block is 0.55, and the coefficient of kinetic friction is 0.35. Assume that the block is not moving initially. In unit-vector ...
October 23, 2011 by Andrea

Science
A horizontal force 10 N is necessary to just hold a block stationary against a wall . The coefficient of friction between the block and the wall is 0.2 . The weight of the block will be ?
April 22, 2014 by Lalit

Physics
The Wall of Death in an amusement park is comprised of a vertical cylinder that can spin around the vertical axis. Riders stand against the wall of the spinning cylinder and the floor falls away leaving the riders held up by friction. The radius of the cylinder is 3.8 m and ...
December 15, 2007 by Lindsay

Physics(Help!!!!!!)
A stick of length l = 65.0 cm rests against a wall. The coefficient of static friction between stick and the wall and between the stick and the floor are equal. The stick will slip off the wall if placed at an angle greater than θ = 39.0 degrees. What is the coefficient of ...
December 9, 2013 by keitanako

math
thomas wants to build a seven layer brick wall. the bottom layer has 20 bricks and each layer of the wall that goes up has two less bricks than the layer below it. if each brick costs .50 cents to cement how money will Thomas spend on the wall ?
April 6, 2010 by Alexander

Physics
If I take a glob of mud and throw it against a wall with the speed of V and stops in time T and than I take a ball and throw it and it hits the wall with speed V and leaves the wall a time T later at a speed of 0.5V and they both have same value and mass, which one involves a ...
October 3, 2010 by Allen

physics
A 17 N horizontal force F pushes a block weighing 3.0 N against a vertical wall. The coefficient of static friction between the wall and the block is 0.65, and the coefficient of kinetic friction is 0.45. Assume that the block is not moving initially. (a) Will the block move? ...
July 14, 2010 by Sam

physics
A 12 N horizontal force pushes a block weighing 5.0 N against a vertical wall (Fig. 6-26).The coefficient of static friction between the wall and the block is 0.60, and the coefficient of kinetic friction is 0.40. Assume that the block is not moving initially. (a) Will the ...
January 5, 2014 by Hamed

Pre-Algebra
The biggest attraction at the new amusement park, World of Fun, is the huge slide that goes under the ground. To get to the top of the slide, Jon has to climb up a 56-foot ladder. Then he rides the slide to the bottom. Finally, Jon walks through a tunnel to the elevator and ...
March 10, 2008 by Joy

Physics
A box is held against a wall (not resting on the ground). What minimum horizontal force will JUST prevent the 5.0kg box from sliding if the coefficient of friction betweent he wall and the box is 0.65?
March 10, 2013 by Julia

Math word problem
A carpenter wants to put four shelves on an 8-foot wall so that the five spaces created decrease by 6 inches as we move up the wall. If the thickness of each shelf is 3/4 inch, how far will the bottom shelf be from the floor?
September 21, 2011 by Megan

calculus
an 8ft 2 by 4 is leaning against a 10ft wall. THe lower end of the 2 by 4 is pulled away from the wall at the rate of 1ft/sec. How fast is the top of the 2 by 4 moving toward the ground (a) when it is 5 ft from the ground and (b) when it is 4 ft from the ground?
October 6, 2010 by Joshie

Physics Classical Mechanics
A stick of length l = 65.0 cm rests against a wall. The coefficient of static friction between stick and the wall and between the stick and the floor are equal. The stick will slip off the wall if placed at an angle greater than θ = 39.0 degrees. What is the coefficient ...
November 27, 2013 by Anonymous

Maths
if there is a cylindrical ride (radius r) and when it rotates the person feels pinned tot he wall and then the floor drops away. how would i start to find the equation of the angular speed needed to keep the person against the wall????
October 22, 2011 by Sarah

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?
April 14, 2012 by Anonymous

physics
an infinite ladder network of resistance is constructed with 1 ohm and 2 ohm resistances .calculate equivalent resistance between points a and b
February 26, 2013 by maneet

physics
moving car runs into stationary car, (against a wall)car does not move, however, the wall push back cancelling the force. Explain Newton's law that apply. Thanks, George
December 22, 2012 by george

physics
a ball of radius 5cm is hung against the wall with an 8cm rope from one side of the ball.it has mass of 60newtons.fined the tension in the rope and the reaction at the wall.
March 4, 2012 by Anonymous

calculus
1. a large vertical rectangular plate of glass is to be inserted in the wall of an aquarium underwater so visitors can see into the tank fo fish. the glass is 10 feet high, 25 feet long and the top fo the glass is 3 feet below the top of the water. The pressure exerted by ...
February 12, 2008 by student

calculus
1. a large vertical rectangular plate of glass is to be inserted in the wall of an aquarium underwater so visitors can see into the tank fo fish. the glass is 10 feet high, 25 feet long and the top fo the glass is 3 feet below the top of the water. The pressure exerted by ...
February 12, 2008 by student

PHYSICS
Jason is practicing his tennis stroke by hitting balls against a wall. The ball leaves his racquet at a height of 57 cm above the ground at an angle of 80° with respect to the vertical. (a) The speed of the ball as it leaves the racquet is 17 m/s and it must travel a distance ...
October 16, 2007 by STEPH

math/trig
A 16 ft ladder casts a shadow 44 ft with the sun angle of elevation is 60.5 degrees. Find the height of the flagpole and at what angle is the shadow twice as long?
September 17, 2012 by John

Physics
A spherical mooring buoy 36cm in diameter with a mass of 43 kg is fastened to a cleat on the top ofthe sea wall by a 50 cm long line, as shown. The force against the sea wall is a. 73N b.87N c. 104N d.116N e. None of these
November 18, 2010 by Gerard

math
A worm is at the bottom of a 12- foot wall. Every day it crawls up 3 feet, but at night it slips down 2 feet. How many days does it take the worm to reach the top of the wall?
January 20, 2010 by ewi

algebra
If you have a ladder that is 8 feet tall and that can extend to 15 feet tall. what is the inequality for this problem?
February 5, 2012 by kato

math
marcus wants to put a 6 1/2 foot bookcase against a 12 1/4 foot wall.if he centers the bookcase, how far will it be from each end of the wall?
December 10, 2012 by gabby

Dwamena Akenten SHS
A pole 25m long is placed against a vertical wall such that its lower end is 7m from the foot of the wall on the same horizontal ground. If the upper end of the pole is push down by 2m, calculate correct to 2 significant figure: 1) how much further away from the wall the lower...
May 3, 2013 by Derrick

Physics
If I take a glob of mud and throw it against a wall with the speed of V and stops in time T and than I take a ball and throw it and it hits the wall with speed V and leaves the wall a time T later at a speed of 0.5V and they both have same value and mass, which one involves a ...
October 3, 2010 by Allen

physics
What is the total force on the bottom of a swimming pool 22.0 m by 8.9 m whose uniform depth is 1.6 m? What is the absolute pressure on the bottom of a swimming pool? What will be the pressure against the side of the pool near the bottom?
November 16, 2010 by Cory

college physics
A board of mass m and length L is leaning against a wall. The wall is frictionless, and the coefficient of static friction between the board and the floor is µ. Find an expression for the minimum angle β at which the board can be leaned without slipping.
May 14, 2010 by Adam

physics
In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. The cylinder begins to rotate about a vertical axis. Then the floor on which the passengers are standing suddenly drops away! ...
October 23, 2008 by Matt

Physics
A 500N person stands 2.5m from a wall against which a horizontal beam is attached. The beam is 6m long and weighs 200N. A cable is attached to the free end of the beam and makes an angle of 45 to the horizontal and is attached to the wall. 1)Determine the magnitude of the ...
December 2, 2009 by Sabeeh

math
Uniform rod AB with end B resting against rough vertical wall. Coefficient of friction between wall and rod is μ. Rod is 2m long and has mass 3kg. Rod is kept in limiting equilibrium by a light inextensible string, one end of which is attached to the end A of the rod and ...
April 23, 2014 by Michael

Physics
A hockey puck is sliding on frictionless ice. It slams against a wall and bounces back toward the player with the same speed that it had before hitting the wall. Does the velocity of the hockey puck change in this process?
September 15, 2011 by Robin

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?
April 2, 2012 by LEBZA

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