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July 30, 2014

Search: A 77 kg adult sits at one end of a 8.9 m long board. His 30 kg child sits on the other end. Where should the pivot be placed so that the board is balanced, ignoring the board's mass?

Number of results: 52,568

PHYSICS
A 74 kg adult sits at one end of a 8.5 m long board. His 35 kg child sits on the other end.Where should the pivot be placed so that the board is balanced, ignoring the board's mass?
April 20, 2010 by JP

physics
A 82 kg adult sits at one end of a 8.6 m long board. His 23 kg child sits on the other end. Where should the pivot be placed so that the board is balanced, ignoring the board's mass? Find the pivot point if the board is uniform and has a mass of 15 kg. Please help with step-by...
April 5, 2010 by Anonymous

Calculus
The seesaw principle: As you probably know, any two persons can balance each other when sitting on opposite sides of a seesaw, regardless of their weights. It is only necessary that each person contribute the same moment — calculated by multiplying the person’s weight ...
April 8, 2012 by chamy

physics
Suppose a 34.5-kg child sits 1.17 m to the left of center on the same seesaw as the problem you just solved in the PRACTICE IT section. A second child sits at the end on the opposite side, and the system is balanced.
November 9, 2012 by sarah

Physics HELP!
A 650 N boy and a 490 N girl sit on a 150 N porch swing that is 1.70 m long. If the swing is supported by a chain at each end, what is the tension in each chain when the boy sits .75 m from one end and the girl .5 m from the other end?
December 5, 2010 by Jennifer

physics
A 50 foot see-saw has 4 kids sitting on it. A 62 lb. girl sits on the left end, with a 76 lb. girl sitting 2.5 feet in front of her. On the right side, a 96 lb. boy sits on the end and has another boy sitting 2.5 feet in front of him. How much does this other boy weigh?
January 20, 2014 by Marina

physics
A fulcrum is placed under the center of a uniform 4.00m long, 3.00kg board. Child A has a mass of 42 kg. This child sits on the left end of the board; Child B has a mass of 26kg. Child B sits on the right end of the board. Where should child C (mass 21 kg) sit in order to have...
November 4, 2012 by Joe

Physics
A child sits on one side of a teeter totter of length 7.60 m, a distance of 49.7 cm away from the end of the beam. The child has a mass of 21.6 kg. Her mother has a mass of 43.6 kg. How far away from her end does she have to sit in order for the teeter tooter to be exactly ...
December 17, 2007 by Courtney

science-physics
A worker sits at one end of a 183-N uniform rod that is 2.80 m long. A weight of 107 N is placed at the other end of the rod. The rod is balanced when the pivot is 0.670 m from the worker. Calculate the weight of the worker
May 15, 2013 by karen

Physics
A child sits on one side of a teeter totter of length 7.60 m, a distance of 49.7 cm away from the end of the beam. The child has a mass of 21.6 kg. Her mother has a mass of 43.6 kg. How far away from her end does she have to sit in order for the teeter tooter to be exactly ...
December 20, 2007 by Cmoney

physics
Two boys and their father are balance on a seesaw. The father, 70kg, sits on one end 0.65m from the center of the seesaw while the two boys sit together on the other end. If each boy weighs 30kg, where should they sit?
July 28, 2013 by Me

physics
Two boys and their father are balance on a seesaw. The father, 70kg, sits on one end 0.65m from the center of the seesaw while the two boys sit together on the other end. If each boy weighs 30kg, where should they sit?
July 28, 2013 by Me

physics
Two boys and their father are balance on a seesaw. The father, 70kg, sits on one end 0.65m from the center of the seesaw while the two boys sit together on the other end. If each boy weighs 30kg, where should they sit?
July 28, 2013 by Me

math 12
Find the number of seating arrangements of eight basketball players on a bench if either the one centre or both of the two forwards must sit at the end where the coach always sits.
November 16, 2010 by kitkat

Physics
A child sits down on one end of a horizontal seesaw of negligible weight, 2.14 m from the pivot point. No one balances on the other side. Find the instantaneous angular acceleration of the see-saw and the tangential linear acceleration of the child.
October 31, 2011 by Kellie

Physics
a 10 foot long teeter-totter pivots in the middle. a 50 lb boy sits on one end. Where must a 100 lb boy sit to balance the beam?
October 24, 2011 by Clay

physics
If a 100 kg adult sits on a first class lever 2 meters away from the axis of rotation...how far back do I need to sit (145 lbs) to balance the lever?
October 26, 2012 by Anonymous

physics
A boy carries a sack on one end of a very light stick that is balanced on his shoulder, at an angle of 22.0 degrees up from the horizontal. The mass of the sack is 7.00 kg, and it sits 1.20 m from his shoulder. If his hand is 0.350 m from his shoulder, on the other end of the...
June 16, 2010 by student

stats
If 95% of all people between 21 and 50 have had at least one adult beverage in their life, find these probabilities for a sample of 10 people in that age group: a) Exactly 10 have had an adult beverage b) At least 6 have had an adult beverage c) At most 8 have had an adult ...
August 4, 2012 by AMber

physics
A box sits on a horizontal wooden board. The coefficient of static friction between the box and the board is 0.41. You grab one end of the board and lift it up, keeping the other end of the board on the ground. What is the angle between the board and the horizontal direction ...
February 17, 2011 by melad

physics
A box sits on a horizontal wooden board. The coefficient of static friction between the box and the board is 0.22. You grab one end of the board and lift it up, keeping the other end of the board on the ground. What is the angle between the board and the horizontal direction ...
September 22, 2011 by abbie

biomechanics
If a 100 kg adult sits on a first class lever 2.3 meters away from the axis of rotation...how far back do I need to sit (145 lbs) on the other side to balance the lever?
October 23, 2013 by Anonymous

English
1. When the program is going on, the director sits in the control room. (At a TV studio) 2. When the program is continuing, the director sits in the control room. (At a TV studio) 3. When the program is happening, the director sits in the control room. (At a TV studio) 4. When...
March 26, 2009 by John

physics
Two people are holding up the ends of a 4.40-kg wooden board that is l = 1.60 m long. A m = 7.00-kg box sits on the board, 0.50 m from one end, as shown below. What forces do the two people exert?
January 2, 2013 by Jamison

Statistics
Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women favor stricter gun laws. A recent telephone survey of 1026 adults by IBR Polls found that 65.9% of ...
November 3, 2013 by Katelyn

Physics
A 5.80 kg ball is dropped from a height of 14.5 m above one end of a uniform bar that pivots at its center. The bar has mass 9.00 kg and is 6.40 m in length. At the other end of the bar sits another 5.30 kg ball, unattached to the bar. The dropped ball sticks to the bar after ...
April 5, 2012 by Joe

math hurry please
Each child ticket for a ride costs $3, while each adult ticket costs $5. If the ride collected a total of $115, and 33 tickets were sold, how many of each type of ticket were sold? A. 8 child and 25 adult B. 17 child and 16 adult C. 156 child and 41 adult D. 25 child and 8 adult
December 13, 2012 by maria

Statistics
Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women favor stricter gun laws. A recent telephone survey of 1026 adult women by IBR Polls found that 65.9...
June 27, 2013 by Katie

physics
A gymnast with mass m1 = 47 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 118 kg and length L = 5 m. Each support is 1/3 of the way from each end. Initially the gymnast stands at the left end of the beam.
March 29, 2011 by Anonymous

physics
A uniform plank weighing 50N and 12m long is pivoted at a point of 4m from one end.A boy weighing 30N sits on the plank 7m from pivot.Where must his elder brother whose weight is 80N sit to balance the plank horizontally
May 29, 2013 by Anonymous

Physics
A uniform plank weighing 50N and 12m long is pivoted at a point of 4m from one end.A boy weighing 30N sits on a plank 7m from pivot.where must his elder brother whose weight is 80N sit to balance the plank horizontally
May 29, 2013 by Anonymous

Physics please help!!
A school yard teeter totter with a total length of 5.46 m and a mass of 35.9 kg is pivoted at its center. A 17.7 kg child sits on one end of the teeter totter. Where should a parent push with a force of 272 N in order to hold the teeter totter level?
March 4, 2011 by Megan

adult ed geometry
Adult education due to the level -thanks - An arc ABC is one quarter of a circle with center B and radius 6. Rectangle EDFB is inscribed in ABC. If ED + DF = 8, find the perimeter ADCFE. Round your answer to the nearest hundredth.
December 1, 2010 by antonne

adult education
describe why it is important to consider each domain in the study of adult development, provide an example of how one domain of development impacts the other two.
December 10, 2010 by KIM

adult education
Why is it essential to consider each domain when studying and discussing the theories of adult development? Provide an example of how one domain of development impacts the other two.
December 4, 2010 by db

Statistics
Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women favor stricter gun laws. A recent telephone survey of 1026 adult women by IBR Polls found that 65.9...
October 30, 2013 by Motu

Statistics
Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women favor stricter gun laws. A recent telephone survey of 1026 adult women by IBR Polls found that 65.9...
November 3, 2013 by Katelyn

physics
A 5 m long see saw has a child whose mass is 25 kg sitting on one end. How far in meters from the center should a 70 kg adult sit on the opposite side for the see saw to balance?
June 8, 2010 by bob

math
In a town, 2/3 of the adult men are married to 3/5 of the adult women. The number of married men and women are equal, and the adult population is over 100. What is the smallest possible number of adult residents in the town?
February 18, 2012 by Miep

Statistics
Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women favor stricter gun laws. A recent telephone survey of 1026 adult women by IBR Polls found that 65.9...
November 2, 2013 by Motu

statistics
Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women favor stricter gun laws. A recent telephone survey of 1026 adults by IBR Polls found that 65.9% of ...
June 27, 2013 by Katelyn

adult education
identify the three domains of development, describe why it is important to consider each domain in the study of adult development, provide an example of how one domain of development impacts the other two.
November 7, 2010 by tee

Math
Game tickets for 1 adult and 2 kids is $21. The adult ticket is $3 more than the kid ticket. How much does adult ticket cost? How much does a child ticket cost? Use a let statement. Write an equation. (21-3) / 3 = x 18/3=x X = $6 (child ticket) X + 3 = $9 (adult ticket) I know...
October 9, 2012 by Meagieting

Physics
ohh sorry, in my first question... A 15 kg box sits on a horizontal FORCE. the coefficient of static fricition between the box and the surface is 0.70. if a force P is exerted on the box at an angle directed 37 degrees below the horizontal, what must be the magnitude of P to ...
August 27, 2012 by Daniella

Physics !
Sound enters the ear, travels through the auditory canal, and reaches the eardrum. The auditory canal is approximately a tube open at only one end. The other end is closed by the eardrum. A typical length for the auditory canal in an adult is about 2.6 cm. If the speed of ...
January 26, 2010 by Lindsay

Physics
A dog sits on the left end of a boat of length L that is initially adjacent to a dock to its right. The dog then runs toward the dock, but stops at the end of the boat. If the boat is H times heavier than the dog, how close does the dog get to the dock? Ignore any drag force ...
July 4, 2014 by Anonymous

Physics HELP!!
Sound enters the ear travels through the auditory canal and reaches the ear drum, The auditory canal is approximately a tube open at only one end. The other end is closed by the eardrum. A typical length for the auditory canal in an adult is about 2.775 cm. The speed of sound ...
November 30, 2012 by rory

economics
for a charity show the rate of adult passes Rs.20 more than the children pass.when a company sold 50 adult and 200 children passes,the amount collected is Rs.2250.find the price of an adult pass.
July 31, 2012 by salam jan

accounting
for a charity show the rate of adult passes Rs.20 more than the children pass.when a company sold 50 adult and 200 children passes,the amount collected is Rs.2250.find the price of an adult pass.
July 31, 2012 by salam jan

Mechanics & hydromechanics
A uniform plank AB of length 4.6 m and weight 508 N is suspended by a vertical rope at each end.A girl of weight 305 N stands in the position 1.6 m from one end.Calculate the tension in the rope at one end using the other end as axis of rotation.
January 16, 2013 by joe

MATH
A movie ticket for an adult costs $8.00, and a child's ticket cost $5.50. One adult is taking a group of children to the movies. She has $35.00. How many children can she take with her to the movies
September 30, 2007 by alexx

Algebra
The school that Trevon goes to is selling tickets to a choral performance. On the first day of ticket sales the school sold 12 adult tickets and 4 student tickets for a total of $188. The school took in $171 on the second day by selling 6 adult tickets and 9 student tickets. ...
December 3, 2009 by Zach

Physics
Little Norma has mass 20kg and wants to use a 4.0-m board of mass 10kg as a seesaw. Her friends are busy, so Little Norma seesaws by herself by putting the support at the system's center of gravity when she sits on one end of the board. How far is she from the support point?
June 8, 2010 by Ashley

ALG2! WORD PROBLEM!very important!!
There are two adults and three children (under the age of 12). They qualify for a special family rate of $174.45. The clerk tells them that a child's ticket always costs $11 less than an adult's ticket. How much is each adult ticket and how much is each child's ticket? Write ...
November 30, 2012 by tyneisha

Science
Two children wish to break a string. Are they more likely to succeed if each takes one end of the string and they pull against each other, or if they tie one end of the string to a tree and both pull on the free end? Why? I answered this one yesterday. You get the same tension...
January 1, 2007 by Taylour

math
A school sells tickets for a show, (a) adult tickets and (c) child tickets. 1) each adult ticket costs $8 and each child ticket costs $5. the total takings are 2300. Write an equation to represent this information. 2) solve algebraically the simultaneous equations to find the ...
January 1, 2010 by harry

physics
The 20-g centrifuge at NASA's Ames Research Center in Mountain View, California, is a horizontal, cylindrical tube 58 ft long and is represented in the figure below. Assume an astronaut in training sits in a seat at one end, facing the axis of rotation 29.0 ft away. Determine ...
October 15, 2012 by Ania

physics
The 20-g centrifuge at NASA's Ames Research Center in Mountain View, California, is a horizontal, cylindrical tube 58.0 ft long and is represented in the figure below. Assume an astronaut in training sits in a seat at one end, facing the axis of rotation 29.0 ft away. ...
September 10, 2013 by ler

physics
The National Aeronautics and Space Administration (NASA) studies the physiological effects of large accelerations on astronauts. Some of these studies use a machine known as a centrifuge. This machine consists of a long arm, to one end of which is attached a chamber in which ...
November 7, 2012 by D

Ststistic
for abrar ul haq show the rate of an adult pass is rs 20 more than the children pass. when a company sold 50 adult passess and 200 children passess , the amount collected re. 2250. find the rice of an adult pass.
February 13, 2011 by Rida

statistics
In a show the rate of an adult pass is Rs. 20 more then the children pass. when a company sold 50 adult passes and 200 children passes,the amount collected is rs.2250. find the price of an adult pass?
March 12, 2011 by rabia

statistics
In a show the rate of an adult pass is Rs. 20 more then the children pass. when a company sold 50 adult passes and 200 children passes,the amount collected is rs.2250. find the price of an adult pass?
March 12, 2011 by rabia

phsc
You have a choice,you may get hit head-on by either an adult moving slowly on a bicycle or by a child that is moving twice as fast on a bicycle.The mass of the child is-one-half that of the adult on the bicycle.Which collision do you prefer ?
June 26, 2012 by brandy

Statistics
Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women favor stricter gun laws. A recent telephone survey of 1026 adults by IBR Polls found that 65.9% of ...
November 4, 2013 by Penny

8th grade math !
Miss wilson is going on a field trip... she needs one adult for every 15 students ... There are 100 students going on the trip ....how many adults are going .., I got 6.7 but u can't have half of an adult lol Plz help...
January 9, 2013 by Kill

college physics
A 12 kg rock sits quietly on a spring, having displaced the end of the spring 0.12 m. What is the spring constant?
September 12, 2010 by Angela

physics 111
The 20-g centrifuge at NASA's Ames Research Center in Mountain View, California, is a cylindrical tube 58 ft long with a radius of 29 ft (see figure). If a rider sits in a chair at the end of one arm facing the center, how many revolutions per minute would be required to ...
November 7, 2010 by Blake

Statistics
Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women favor stricter gun laws. A recent telephone survey of 1026 adults by IBR Polls found that 65.9% of ...
June 27, 2013 by Katie

physics
a 10-m uniform beam of weight 100N is supported by two ropes at the ends. If a 400N erson sits at 2.0 m from the left end of the beam, what is the tension in the right rope?
January 21, 2009 by lulu

adult education
what are three most important steps in adult program planning
January 24, 2010 by jones

adult education
describe why it is important to consider each domain in the study of adult development,
December 1, 2010 by Anonymous

math
drama club sold adult tickets for $8 and kid tickets for $5. for the final performance a total of 226 tickets were sold for a total of $1670. how many adult tickets were sold for the performance? X = # of adult tickets Y = # of kid tickets X + Y = 226 8X + 5Y = 1670 Solve ...
March 28, 2007 by mario

Algebra
age of child over age of child +12 x adult dose. if an adult's dose of a particular medication is 100 mg, what is the dose for a 10-year-old child. Round answer to one decimal place. Part b if a 12 year old child dose of a particular medication is 15 mg what is the adult' dose...
April 24, 2014 by Mary Ann

Statistics p-value
Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women favor stricter gun laws. A recent telephone survey of 1026 adults by IBR Polls found that 65.9% of ...
October 30, 2013 by Motu

Science
Describe in one paraghraph what embryonic and adult stem cells are and how knowing the difference relates to the artice (the article was on stem cells from human skin; no embryos needed). How do i answer that and what are embryonic cella and adult stem cells
February 25, 2008 by Kathryn

PlEaSe HeLp Me!!!
Describe in one paraghraph what embryonic and adult stem cells are and how knowing the difference relates to the artice (the article was on stem cells from human skin; no embryos needed). How do i answer that and what are embryonic cella and adult stem cells
February 25, 2008 by Kathryn

Statistics
Is the p-value to the below question 0.4995? Do you reject or fail to reject the null hypothesis? Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women ...
November 2, 2013 by Motu

AP CALC
A temperature of a 10m long metal bar is 15C at one end and 30C on the other end. Assuming that the temperature increases linearly from the cooler end to the hotter end, what is the average temperature of the bar? Also, explain why at least one place on the bar must have this ...
February 15, 2011 by jessica

College Physics
One end of a 14 m long wire having a total mass of .8000 kg is fastened to a fixed support in the ceiling, and a 7.50 kg object is hung from the other end. If the wire is struck a transverse blow at one end, how much time does the pulse take to reach the other end? neglect the...
November 1, 2007 by Jen

Sociology
In the last 30 years, more young adults, ages 25 to 34, are migrating back home. These returning adult children are called the boo-merang generation. One in five of these adult children are returning to the nest. Most of those surveyed indicate that they simply do not have ...
August 5, 2012 by Susan

Algebra
there are a 1000 tickets. Price for children's ticket is 6.5. Adult tickets are 9.5. total tickets sales are 8444. how many adult and children tickets are sold. Using binomials to solve. x+y = 16 (1 child + 1 Adult = 16) 6.5X + 9.5Y = 8444 6.5(16-y) + 9.5Y = 8444 What am I ...
November 18, 2012 by Anonymous

algebra
Two expressions for calculating the drug dose for young children are: (2t^3 + t^2 -t)a / 48t^2 -24t and (3t^2 -2t)a / 3t^2 + 34t - 24 where t is the age of the child in years and a is the adult dose. If the adult dose for a pain killing drug is 250mg, then what is the dose to ...
January 2, 2012 by dominic

gramer correct sentence
"Did you know that Chicago sits on Lake Michugan?" asked Brenda.(think so) "Did you know that Chicago sits on Lake Michigan? Asked Brenda. (don't think so) "Did you know that Chicago sits on Lake Michigan? Asked Brenda". (don't think so) "Did you know that Chicago sits on Lake...
April 17, 2012 by kevin

adult education
at the end of an interview you are asked this question "how is this interview going" ,what is the appropriate response
October 31, 2009 by christie

physics
a 10m uniform beam of weight 100 N is supported by two ropes at the ends. if a 400 N person sits at 2m from the left end of the beam, what is the tension in the left rope?
December 19, 2011 by Dasha

Statistics
Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women favor stricter gun laws. A recent telephone survey of 1026 adults by IBR Polls found that 65.9% of ...
November 3, 2013 by Katelyn

College Physics
A child plays on a bungee cord and oscillates with a certain frequency f. An adult with a mass that is 16 times greater than that of the child then uses the same bungee cord. What is the ratio of the frequency with the adult to the frequency with the child? I tried to answer ...
November 6, 2011 by Anon

physics
A large boulder sits at the top edge of a cliff, this is boulder A. A smaller boulder sits on a ledge half way down the same cliff, this is boulder B. Which boulder has the greatest potential energy, A or B?
December 7, 2009 by lexie

Physics
c) A penny sits 12 cm from the center of a record turning at 33 1/3 rpm. What is the tangential speed in m/s? d) A mass spins with a tangential speed of 1.2 m/s on the end of a string which is 0.75m long. What is the period of the rotation in seconds?
January 3, 2013 by Alex

Physics
c) A penny sits 12 cm from the center of a record turning at 33 1/3 rpm. What is the tangential speed in m/s? d) A mass spins with a tangential speed of 1.2 m/s on the end of a string which is 0.75m long. What is the period of the rotation in seconds?
January 3, 2013 by Alex

St.Nicholas Adult High School (English)
the sentence'15%of adult height is added during teen years." Ineed response and explaination. I'am so confused about that question.
January 17, 2011 by Mary

Algebra 2
The PTO has raised $1800 to help pay for a trip. They ask that there be one adult for every five students attending. Adult tickets cost $45 and student tickets cost $3. If the group wants to take 50 students, how much will each student need to pay so the adults pay nothing?
January 27, 2011 by Julia`

ALG2! WORD PROBLEM! PLZ HELP!!
A family of 5 comes to the amusement park. There are two adults and three children (under the age of 12). They qualify for a special family rate of $174.45. The clerk tells them that a child's ticket always costs $11 less than an adult's ticket. How much is each adult ticket ...
November 28, 2012 by tyneisha

physics
A gymnast with mass m1 = 47 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 118 kg and length L = 5 m. Each support is 1/3 of the way from each end. Initially the gymnast stands at the left end of the beam. 1)What is the ...
March 29, 2011 by Anonymous

AP Calculus AB
the temperature of a 10m long metal bar is 15 degrees celcius at one end and 30 degrees celcius on the other end. Assuming that the temperature increases linearly from the cooler end to the hotter end, what is the average temperature of the bar? Also, explain why at least one ...
February 13, 2011 by Destinyyy

math, algebra
Two expressions for calculating the drug dose for young children are: (2t^3 + t^2 -t)a / 48t^2 -24t and (3t^2 -2t)a / 3t^2 + 34t - 24 where t is the age of the child in years and a is the adult dose. If the adult dose for a pain killing drug is 250mg, then what is the dose to ...
January 2, 2012 by dominic

adult education
identify the three domains of development. Describe why it is important to consider each domain in the study of adult education?
October 24, 2010 by Linda

Math
Part A -An adult dose is 75mg Part B- 500mg (adult) 187mg (child) How I come up with a formula for this problem?
July 17, 2014 by Maria

Physics!
A 20 kg square slab with side lengths 3.0 m rotates around an axis perpendicular to the slab. A particle of mass 0.60 kg sits on each of the corners of the square. Also, a particle of mass 0.80 kg sits at the center of each of the edges. What is the moment of inertia of the ...
June 9, 2012 by Lilly

psychology
I need the definition of Ecclectic theory in adult devlopement. I know it is a part of all theories related to adult developement but can't find a definition.
December 28, 2010 by Angela

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