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(07:14) The formula for the labor force participation rate is simple: labor force (unemployed + employed) / adult population, excluding people in the military or prison for both.
The total labor force participation rate has grown significantly in the United States since the 1950s. But the total growth doesn’t paint a clear picture of how the U.S. workforce has changed, particularly the makeup.
There are several big factors at play influencing the demographics of labor force participation. For starters, women have entered the labor force in greater numbers since the 1950s. At the same time, technology has altered the types of work available. Manufacturing jobs, which tended to employ lower-skilled, less-educated male workers, gave way to more service jobs requiring more skills and education.
In more recent years, the labor force participation rate, though still much higher than it was half a century ago, has been declining.
There are a number of factors influencing the decline. Many more women are working, but fewer men are employed or actively looking for a job. The United States also has an aging population with many Baby Boomers retiring from the labor force.
In an upcoming video, we’ll take a look at one of the big reasons behind why women have been able to enter and stay in the labor force during peak childbearing years: The Pill.
Found by MRUniversity in Labor Market
December 14, 2017 at 12:33 PM
Ages: 14 - 18
License: Educational Community License
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This is how you include air resistance in projectile motion. It requires the Drag Force and Numerical Modeling (or the Euler Method). It is also very helpful to use a spreadsheet to do the calculations. I prove a statement from a previous projectile motion problem video, "Air resistance decreases the x displacement of the ball by less than 1 cm."
Content Times:
0:22 The statement this video proves
1:01 The basic concept of air resistance
1:54 The Free Body Diagram
2:20 The Drag Force Equation
3:13 Information about the Lacrosse Ball
4:03 The Drag Coefficient
4:55 The Density of Air
5:18 How the Drag Force affects the motion
5:58 The basic idea of Numerical Modeling (or the Euler Method)
6:50 Solving for the acceleration in the x direction
8:53 Solving for the final velocity in the x direction
9:54 Solving for the final position in the x direction
11:41 Entering the Lacrosse Ball information into Excel
13:34 Solving for the Drag Force in x direction in Excel
14:29 Solving for the acceleration in the x direction in Excel
14:58 Solving for the final velocity and final position in the x direction in Excel
15:46 Solving for the acceleration in the y direction
17:21 Solving for all the variables in the y direction in Excel
19:13 Click and Drag Copy. Harnessing the Power of Excel!
19:43 Understanding the numbers in Excel
20:35 Solving for the decrease in the x displacement caused by the Drag Force
Want lecture notes & the Excel File?
The original problem videos for this are:
(part 1 of 2) An Introductory Projectile Motion Problem with an Initial Horizontal Velocity
(part 2 of 2) An Introductory Projectile Motion Problem with an Initial Horizontal Velocity
How Many Attempts did it Really Take? - with live music from Amos Lee
Next Problem: Nerd-A-Pult – An Introductory Projectile Motion Problem
1¢/minute
Found by Flipping Physics in Friction
May 9, 2014 at 01:19 PM
Ages: 10 - 18
License: Proprietary
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Following the assassination of John F. Kennedy on November 22, 1963, Vice President Lyndon B. Johnson is sworn in as president of the United States aboard Air Force One before the plane leaves Dallas for Washington, D.C. (00:34)
Found by CourtneyMorrison in Johnson Audio
July 8, 2012 at 04:07 PM
Ages: 13 - 18
License: Proprietary
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Among the many military holidays celebrated each year is Armed Forces Day. Celebrated the third Saturday in May, Armed Forces Day falls during Military Appreciation Month (00:41)
Found by teresahopson in May 21-31
May 14, 2018 at 08:05 PM
Ages: 10 - 18
License: Proprietary
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Demonstrating and measuring how a helmet changes impulse, impact force and change in time during a collision.
Want lecture notes?
This is an AP Physics 1 Topic.
Content Times:
0:21 The demonstration without a helmet
1:15 The equation for Impulse
1:55 How a helmet should affect the variables
2:36 The demonstration with a helmet
3:29 Comparing with and without a helmet
Next Video: Review of Momentum, Impact Force, and Impulse
http://www.flippingphysics.com/impulse-review.html
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Demonstrating Impulse is Area Under the Curve
Please support me on Patreon!
Thank you to my Quality Control help: Christopher Becke, Scott Carter, and Jennifer Larsen
Found by Flipping Physics in Impulse
December 1, 2016 at 12:21 PM
Ages: 12 - 18
License: Proprietary
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In this audio clip, a mid-battle war report describes the frustration of South Vietnamese forces as they struggle to take control of Highway 13, the main artery into the city of An Loc, in April 1972. (1:09)
Found by CourtneyMorrison in An Loc
June 18, 2012 at 04:16 PM
Ages: 13 - 18
License: Proprietary
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Description and examples of g-forces or number of g’s.
Want forces.html">Lecture Notes? This is an AP Physics 1 topic.
Content Times:
0:14 Equations for g- forces or number of g’s
1:08 Number of g’s when at rest on the surface of the Earth
2:43 Number of g’s when in orbit
3:33 Apparent Weightlessness
4:20 How to experience apparent weightlessness in a car
5:22 Apparent weightlessness examples
6:05 Describing number of g’s again
7:08 More examples of number of g’s
Next Video: Gravitational Field Introduction
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Apparent Weightlessness Introduction
Please support me on Patreon!
Thank you to Sawdog, Christopher Becke, Frank Geshwind and Scott Carter for being my Quality Control Team for this video.
Thank you to Youssef Nasr for transcribing the English subtitles of this video.
Picture and Video credits:
NASA Logo https://www.nasa.gov/sites/default/files/thumbnails/image/nasa-logo-web-rgb.png
Liquid Ping Pong in Space - RED 4K https://www.youtube.com/watch?v=TLbhrMCM4_0
Side view of plane in field - https://commons.wikimedia.org/wiki/File:Airplanes_-_Types_-_Kirkham_Triplane_manufactured_by_the_Curtiss_Engineering_Corp.,_Garden_City,_Long_Island._Side_view_of_plane_in_field_-_NARA_-_17341451.jpg
Tesla-Roadster-2020-1280-01 - https://www.netcarshow.com/tesla/2020-roadster/1280x960/wallpaper_01.htm
STS120LaunchHiRes-edit1 - https://commons.wikimedia.org/wiki/File:STS120LaunchHiRes-edit1.jpg
Soyuz_TMA-13_Edit - https://commons.wikimedia.org/wiki/File:Soyuz_TMA-13_Edit.jpg
Hong Kong skyscrapers in a night of typhoon.jpg - https://upload.wikimedia.org/wikipedia/commons/8/8d/Hong_Kong_skyscrapers_in_a_night_of_typhoon.jpg
Found by Flipping Physics in Gravity
January 21, 2018 at 03:25 PM
Ages: 9 - 18
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NASA Connect Segment that explains aerodynamic forces that affect aircraft performance and how these forces relate to each other. (01:50)
Found by teresahopson in Aerodynamics
July 15, 2010 at 07:27 PM
Ages: 12 - 18
License: Proprietary
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Part of NCSSM Online Physics Collection: This video deals with force and acceleration on a turntable - results. This is part 2 of 2. http://www.dlt.ncssm.edu
Found by Joyce Ventimiglia in Force & Balance
February 6, 2012 at 10:12 AM
Ages: 15 - 18
License: CC by-nc-sa
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In this video clip courtesy of the South African Air Force Museum view rare old archive war footage of the South African Air Force during the First World War. (04:18)
Found by CourtneyMorrison in Other Military Forces
March 26, 2012 at 03:12 PM
Ages: 12 - 18
License: Proprietary
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All physical phenomena of nature are explained by four forces. Two nuclear forces -- strong and weak -- dwell within the atomic nucleus. The fundamental force of gravity granges across the universe at large. So does electricity, the fourth fundamental force, which binds the atoms of all matter.
Found by laneyk in Force & Balance
March 22, 2010 at 08:47 PM
Ages: 14 - 18
License: Undetermined
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How can the human body tolerate the crushing G-force that occurs at high acceleration? This brief video explains how technology helps in these cases.
Found by freealan in Human Anatomy
November 14, 2010 at 10:37 PM
Ages: 6 - 18
License: Undetermined
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In order to use Newton’s Second Law, you need to correctly draw the Free Body Diagram. This problem explains a common mistake students make involving the force applied. We also review how to find acceleration on a velocity as a function of time graph. (05:58)
Found by Flipping Physics in Forces Overview
January 12, 2015 at 10:53 AM
Ages: 12 - 18
License: Proprietary
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Topics Covered: • Forces • Extreme forces of nature • Tornado • Hurricane • Earthquake • Landslide • Lightening • Flood (07:24)
Found by teresahopson in Earth Forces Overview
July 15, 2019 at 01:41 PM
Ages: 7 - 12
License: Proprietary
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Summing the forces is nothing new, it is vector addition. This video compares summing the forces to graphical vector addition. This video builds off the previous video "force-example.html">A Three Force Example of Newton's 2nd Law with Components” which you should watch first. (03:34)
Found by Flipping Physics in Forces Overview
January 6, 2015 at 12:52 PM
Ages: 10 - 18
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Calculus is used to determine the force of gravity and the gravitational potential energy between an object and a planet, inside and outside the planet. Equations and graphs are determined and discussed. Want Lecture Notes? This is an AP Physics C: Mechanics topic.
Content Times:
0:01 Basic universal gravitation equations
1:07 Outside the planet
1:42 Assumptions for inside the planet
3:38 Deriving mass inside r
4:23 Determining the equation for force of gravity inside the planet
5:24 Graphing the force of gravity inside the planet
5:59 Determining the equation for universal gravitational potential energy inside the planet
7:37 Solving for the constant C
8:49 The equation for universal gravitational potential energy inside the planet
9:41 Looking over the graphs
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Impulse for Two Objects being Attracted to One Another
Please support me on Patreon!
Thank you to Sawdog, Scott Carter, and Christopher Becke for being my Quality Control Team for this video.
Thank you to Youssef Nasr for transcribing the English subtitles of this video.
Found by Flipping Physics in Gravity
March 11, 2018 at 04:58 PM
Ages: 11 - 18
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A 0.453 kg toy car moving at 1.15 m/s is going up a semi-circular hill with a radius of 0.89 m. When the hill makes an angle of 32° with the horizontal, what is the magnitude of the force normal on the car? Want force-normal.html">Lecture Notes? This is an AP Physics 1 topic.
Content Times:
0:08: Translating the problem
1:01 Clarifying the angle
1:51 Drawing the free body diagram
3:20 Summing the forces
4:22 How the tangential velocity and force normal change
Found by Flipping Physics in Rotational Motion
October 2, 2017 at 11:59 AM
Ages: 12 - 18
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Resolve the force of gravity into its parallel and perpendicular components so you can sum the forces.()06:34)
Found by Flipping Physics in Gravity
October 8, 2015 at 01:24 PM
Ages: 12 - 18
License: Proprietary
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