E Finn.
As of the past half century or so, Americans have been growing more and more concerned with nutrition and keeping up a healthy lifestyle. As a result, we are living to be older and older. Denise Scruggs (2012) claims that we are headed towards a “Silver Tsunami” which is a state of being where the older population outnumbers the younger population. I believe this is happening now, and I believe that we are striving to keep the elderly alive because we have an innate responsibility to take care of our elders, and because of a connection to the past we don’t want to lose.

In her lecture, Scruggs (2012) talks about all of the changes that we would have to make to make in order to accommodate for an aging population. Some of these changes include an increased risk of mental illness with an aging population. When you have more people getting older, there is more of a risk of them getting some form of dementia, Alzheimer’s, or Vertigo. This would lead to a growing population of adults who are mentally unstable. Another change that would occur is in the types of businesses and services we would provide to an aging population with different needs and expectations. With an aging population, people are going to need different services, such as healthcare or retirement advice. They will have the need for different businesses, such as the eye care business, taking care of a growing population with deteriorating eyes. Also, the realty business will change to accommodate all of the moving retirees. Businesses such as these, along with many other social programs, such as social security, Medicare, Medicaid, and Pension programs will have to change to deal with growing financial strain. Another change that is likely to occur with an aging population is an increased presence of the elderly in the workforce. As the average age of living increases, people must stay in their careers longer in order to accumulate enough wealth for their elongated lives. This will...

...HYDROSTATIC FORCE (EXPERIMENT 1)
INTRODUCTION
The determination of force which are exerted by liquid which are at rest on surface immersed in liquids. From the study by hydrostatic, the following principles have been established :
a) There are no shear stress present when the fluid is not in motion.
b) The pressure exerted by a fluid under hydrostatic conditions. This pressure acts perpendicular to an immersed surface.
c) Hydrostatic pressure various linearly, increasing with an increase in depth.
OBJECTIVES
1. To determine the hydrostatic thrust on a plane surface partly immersed in water.
2. To determine the position of the line of action of the thrust.
3. To compare the position determined by experiment with the theoretical position .
4. To verify the formula for calculating hydrostatic thrust.
THEORY
When the quadrant is immersed in water it is possible to analyze the forces acting on the surfaces of the quadrant as follows:
The hydrostatic force at any point on the curved surface is normal to the surface and therefore resolves through the pivot point because this is located at the origin of the radii. Hydrostatic forces on the upper and lower curved surfaces therefore have no net effect – no torque to affect the equilibrium of the assembly because all of these forces pass through the pivot.
The forces on the sides of the...

...Definition of Force
A force is a push or pull upon an object resulting from the object's interaction with another object. Whenever there is an interaction between two objects, there is a force upon each of the objects. When the interaction ceases, the two objects no longer experience the force. Forces onlyexist as a result of an interaction.
Velocity, Acceleration, Momentum, and Impulse
Velocity, in physics, is a vector quantity (it has both magnitude and direction), and is the time rate of change of position (of an object). However, quite often when you read ‘velocity’, what is meant is speed, the magnitude of the velocity vector (speed is a scalar quantity, it has only magnitude). For example: escape velocity (the minimum speed an object needs to escape from a planet, say); note that this can be easily turned into a velocity, by adding ‘in the direction radially out from the center of the planet’, and that this direction is sometimes implied (if not actually stated).
Velocity is a vector measurement of the rate and direction of motion or, in other terms, the rate and direction of the change in the position of an object. The scalar (absolute value) magnitude of the velocity vector is the speed of the motion. In calculus terms, velocity is the first derivative of position with respect to time.
The most common way to calculate the constant velocity of an object moving in a straight line is with...

...normal force of 16 N.
On a sheet of paper, draw the free body diagram for block 1 using the two-subscript notation from class. After completing the free body diagram, enter below each force and its x & y-components. Remember that the x-component is the "i" component and the y-component is the "j" component.
FORCES on BLOCK 1
Weight force on block 1 by Earth
W1E = 0 i + -40 j N
Normal force on block 1 by Surface
N1S = 0 i + 40 j N
Normal force on block 1 by Hand
N1H = 16 i + 0 j N
| You are correct. Computer's answer now shown above.
Your receipt no. is 161-8237 | Previous Tries |
What is the acceleration a of block 1?
a = 4 i + 0 j m/s2
Block 1 (m1 = 6 kg) and block 2 (m2 = 16 kg) are adjacent to each other on the surface of a table. Block 2 is to the LEFT of block 1. A rope pulls at an angle on block 2 to the right with a vertical tension component of 110 N upward, and both blocks move right with an acceleration of magnitude 5 m/s2.
On a sheet of paper, draw the free body diagrams for block 1 and block 2 using the two-subscript notation from class. After completing the free body diagrams, enter below each force and its x & y-components. Remember that the x-component is the "i" component and the y-component is the "j" component.
NET force on Block 1
Fnet1 = 30 i + 0 j N
NET force on Block 2
Fnet2 = 80 i + 0 j N
| You are...

...IB PHYSICS HL
Lab: Centripetal Force
BACKGROUND/PURPOSE:
*In this section of your lab write-up, be sure to include all equations and
background information
-For motion along a straight line, a constant net force F acting on a body of mass m produces a constant acceleration a, related to the force through Newton's law:
F = ma
-When the same object is moving in a circle at a constant speed, the acceleration of the object is given by the following equation:
a = v2/r
-In this experiment, you will use these two equations and some simple measurements to determine the unknown mass of a rubber stopper as it rotates in a horizontal circle around a fixed center point.
PROCEDURE:
The equipment that you will use is as follows:
-Glass tube
-Rubber stopper
-String
-Hanging masses (washers)
When the glass tube is swung in a small circle above your head, the rubber stopper moves around in a horizontal circle at the end of a string. The string is threaded through the tube and fastened to some washers hanging below. The force of gravity on these washers, acting along the string, provides the centripetal force needed to keep the stopper moving in a circle.
Before taking any measurements, get a feel for the apparatus. With only one washer on the end of the string to keep the stopper from getting away, whirl the stopper over your head while holding onto the string below the tube.
The mass of the stopper...

...For other uses, see Force (disambiguation).
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See also: Forcing (disambiguation)
ForceForce examples.svg
Forces are also described as a push or pull on an object. They can be due to phenomena such as gravity, magnetism, or anything that might cause a mass to accelerate.
Common symbol(s): F, F
in SI base quantities: 1 kg·m/s2
SI unit: newton
Derivations from other quantities: F = m a
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In physics, a force is any influence that causes an object to undergo a certain change, either concerning its movement, direction, or geometrical construction. In other words, a force can cause an object with mass to change its velocity (which includes to begin moving from a state of rest), i.e., to accelerate, or a flexible object to deform, or both. Force can also be described by intuitive concepts such as a push or a pull. A force has both magnitude and direction, making it a vector quantity. It is measured in the SI unit of newtons and represented by the symbol F.
The original form of Newton's second law states that the net force acting upon an object is equal to the rate at which its momentum changes with time.[1] If the mass of...

...How competitive forces shape strategy Pﬂicht 4. (5Forces)
"
1 von 3
While one some- times hears executives complaining to the contrary, intense competition in an
industry is neither coincidence nor bad luck.
Moreover, in the fight for market share, competition is not manifested only in the other players.
Rather, competition in an industry is rooted in its underlying economics, and competitive forces
exist that go well beyond the established combatants in a particular industry. Customers,
suppliers, potential entrants, and substitute products are all competitors that may be more or less
prominent or active depending on the industry.
- The weaker the forces collectively, however, the greater the opportunity for superior
performance.
T-he strongest competitive force or forces determine the profitability of an industry and so are of
greatest importance in strategy formulation.
There are six major sources of barriers to entry:
1. Economies of scale
—These economies deter entry by forcing the aspirant either to come in on a large scale or to accept
a cost disadvantage.
2. Product differentiation
Brand identification creates a barrier by forcing entrants to spend heavily to overcome customer
loyalty.
—> e.g. Softdrink Company
3. Capital requirements
The need to invest large financial resources in order to compete creates a barrier to entry
4. Cost disadvantages independent of size...

...questions: force and motion I problem 1 The figure below is an overhead view of a 12 kg tire that is to be pulled by three ropes. One force (Fl, with magnitude 50 N) is indicated. Orient the other two forces F2 and F3 so that the magnitude of the resulting acceleration of the tire is least, and find that magnitude if (a) F2 = 30N, F3= 20 N; (b) F2= 30 N, F3 = 10 N; and (c) F2 = F3 = 30 N.
problem 2 A weight-conscious penguin with a mass of 15.0 kg rests on a bathroom scale (see figure below). What are (a) the penguin's weight W and (b) the normal force N on the penguin? (c) What is the reading on the scale, assuming it is calibrated in weight units?
problem 3 If a nucleus captures a stray neutron, it must bring the neutron to a stop within the diameter of the nucleus by means of the strong force. That force, which "glues" the nucleus together, is essentially zero outside the nucleus. Suppose that a stray neutron with an initial speed of 1.4 X 107 m/s is just barely captured by a nucleus with diameter d = 1.0 X 10-14 m. Assuming that the force on the neutron is constant, find the magnitude of that force. The neutron's mass is 1.67 X 10-27 kg.
problem 4 Sunjamming. A "sun yacht" is a spacecraft with a large sail that is pushed by sunlight. Although such a push is tiny in everyday circumstances, it can be large enough to send the spacecraft outward from...

..."gravity" after he saw an apple
falling onto the ground in his garden.
"Gravity" is the force of attraction
exerted by the earth on an object.
The moon orbits around the earth
because of gravity too. Newton later
proposed that gravity was just a
particular case of gravitation. Every
mass in the universe attracts every
other mass. This is the main idea of
Newton's Law of Universal
Gravitation.
A portrait of Issac Newton.
Courtesy of AIP Emilio Segre Visual
Archives, W.F. Meggers Collection.
The law was published in Newton's
famous work, the Principia
("Mathematical Principles of Natural
Knowledge") in 1687. It states that every
particle in the universe exerts a force
on every other particle along the line
joining their centers. The magnitude
of the force is directly proportional
to the product of the masses of the
two particles, and inversely
proportional to the square of the
distances between them.
In mathematical terms:
By team C007571, ThinkQuest2000.
where and are the masses of the two
particles,
r is the distance between the two
masses,
F is the gravitational force between
them, and
G is the universal gravitational
constant,
.
The above equation only calculates the
gravitational force of the simplest case
between two particles. What if there are
more than two? In that case, we
calculate the resultant gravitational force
on a particle by finding the vector sum of
all the gravitational...