... described the Magnus force in 1853. It is written as: W is the angular velocity vector of the ball. A more likely equation used for baseball is: B is a dimensionless quantity. For typical curve balls, the Magnus force is one third of the force due to gravity. Using coordinates, the equations of motions of a baseball can be written as the following: = = = x measures from the pitcher ... to the hitter. y measures horizontal displacement. Z measures vertical displacement. Various pitches thrown by a pitcher have different directions of the way it spins on the axis. Right-handed pitchers .....

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• Grade Level: High School

... force to the ambient gas surrounding the envelope since the envelope is able to retain its shape. In an ideal hot air balloon: 〖 P〗_c=P_h=P V_c=V_h=V Where P=pressure of surroundings/air inside the balloon (Pa) V=volume of a fully inflated balloon (m^3) Substituting equations above into the Ideal Gas Laws: n_c=PV/(RT_c ) n_h=PV/(RT_h ) This can then be substituted into the equation that determines the overall resultant force ... of the balloon earlier. F=gM(PV/(RT_c )-PV/(RT_h ))-W_b F=(gM PV)/R (1/T_c -1/T_h )-W_b The value of M as mentioned refers to the mass of air per mole. Assu...

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... with an easy, cooperative patient. As the visit progressed, he found that this visit was not your ordinary quick check-up visit. In the beginning of the story, they describe Mathilda as a solemn child. The doctor does mention that she looks like a child that could be in advertisement in papers though ... use the word hurt I might be able to get somewhere." (Williams 555). When children hear words like this, they tend to think the worse of things. Mathilda even struck the doctor and knocked his glasses off when he got close enough to take a look. Even Mathilda's parents thought she was .....

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... their freedom and rights once they broke the law. "In Hudson v. McMillian (1992), the U.S. Supreme Court ruled that the use of excessive physical force against a prisoner may constitute cruel and unusual punishment even if the prisoner does not suffer serious injury (pg.200)." ... , Improving Pregnancy Outcome during Imprisonment: A Model Residential Care Program, explains how female become incarcerated and for what reason. More than half of the population of incarcerated females are from drug use. They are mostly poor, uneducated, limited in job skills, and unemployed. Pregnant inmates ...

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... The recording proceeded for 10sec after the last stimulus had been delivered. Results I. Recording a Twitch The threshold for the isolated gasctronemius frog muscle was determined using a range of stimulus amplitudes starting at 50mV and increasing in 50mV increments. Each individual stimulus was delivered after a 50ms delay and recorded for 625ms. Table 2 provides the stimulus voltage delivered ... and force starting at the first measurable response of 240mV. The stimulus voltage at which the response failed to increase exponentially three successive times defined the maximum excitatio...

• Word Count: 2005
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• Grade Level: High School

... . France, Belgium, Luxembourg, the Netherlands and the UK sign the Brussels Treaty agreeing on military assistance, economic, social and cultural cooperation. A year later the same countries set up the Council of Europe - a forum for all European countries to discuss informal co-operation. 1951: THE FÃ"RST STEP: SCHUMAN'S VÃ"SÃ"ON The "Six" - France, Germany, Italy, Belgium, Luxembourg and ... causing Jean Monnet to resign from the High Authority. 1957: THE EUROPEAN COMMUNÃ"TY Ã"S BORN The "Six" - France, Germany, Italy and the Benelux countries - sign the Treaty of Rome - the found...

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... , and mental testing. The training started with a lecture on emergency breathing equipment and hypoxia. This training is required if the aircraft loses cabin pressure. Most humans have a conscious time of three to five minutes while experiencing hypoxia. The new fliers are told that their bodies will go through reactions they've never gone through before. For example, their eyes will ... zero-g it sprays well." After the lectures and physical tests, each member is given a written test about motion sickness, emergency equipment, gas laws, atmospheric science, and physiological principles o...

• Word Count: 1414
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• Grade Level: High School

... in a family many times can show how strong the traditions are in that family. Families that can hold onto traditions for longer have placed more effort into the act of repetition of tradition. Without a conscious effort at repetition by the family the traditions can be lost in less than a generation. Anything can become a tradition just as long as the necessary repetition ... A tradition such as lighting candles, which probably had religious significance to Veronica's mother, can be created just because the act is repeated so often. That Veronica lost the religious meaning of lighting ...

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... to consider that force has both magnitude and direction, making it a vector quantity and not a scalar quantity. A scalar quantity will only have size, but not direction. A good example of these two quantities are distance and displacement. Distance is a scalar quantity because it only states the distance travelled (e.g. 1.5km) whereas displacement is a direct line which connects from the start ... point of an objects, measuring the change of position of a moving body. Displacement is a vector quantity which states the length and direction (e.g. 500m north). Similarly to distance and...

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• Grade Level: High School

... 0.5 or ½ a AU far from us. Johannes Kepler was a mathematician born in a small town in Germany in 1571 A.D. Because of eyesight problems he decided to focus his attention into mathematical equations and relying on others sightings. He came up with 3 significant laws that are now a giant contribution to astronomy. Kepler's First Law ... : Each planet's path around the Sun is and ellipse, with the Sun at one focus of the ellipse. In Somewhat Plain English: An ellipse is a geometrical shape of ... while it moves most slowly at its farthest point from the Sun (called the aphelion). Kepler's...

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• Grade Level: High School

... G force (in a horizontal direction) reaches about 8 Gs your blood will have become too heavy for your heart to pump around your body. As your brain starves of oxygen your vision is effected, in that you will only be able to see in black and white. If your body is still be exposed to a G force ... this high your peripheral vision will start to deteriorate until it seems that you are looking down the middle of a drinking straw. After this, you will pass out. At 20Gs your will start to bleed and at 24 Gs the human body can start to tear ... apart internally. At 40 Gs death is instantaneous...

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• Grade Level: High School

... roadblock is for making the required sales offer. It also gave a clear picture that it has nothing to do with skill, but an issue of will. Besides the five why analysis, I also used the Undesirable-Desirable Impediment analysis (UDI). This was not very helpful because when it came ... involved so it is ultimately up to them to decide if they choose to rectify the problem or not. They are completely in control of their future. After trial an error I realized that probably the best way to address this problem is through gap analysis since Annie totally ... the problem as she does not l...

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... I am interested in at the moment, as I mentioned earlier is very much to do with imagery. I have recently made quite an apparent change in my style of work. I am focusing on work that is compositionally very minimal. I am trying to develop my work with fewer marks on the page and to concentrate and emphasize ... feel his art helped him to cope with his dementia. When he was working with images his brain was being soothed and his life was been taken care of. Another famous artists, Jackson Pollock, through self-abuse with drugs and alcohol, ended his life early. But was it the art that di...

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... the mass applied to the parachute, the quicker it will take to fall to the ground. This is because the more mass will have a greater force of gravity, therefore, the larger mass applied will make the parachute fall faster than the smaller mass applied as because they take longer to reach a terminal velocity ... and we will measure the parachute to a suitable size using a 30cm ruler. Also, the 30cm ruler will be used to measure equal lengths of four pieces of string. The string will be used to tie the parachute to the small tin which will be used to hold the masses. The scissors will ......

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... are wearing the same uniform, having the same masks on and dancing in unity. This shows the loss in individuality which is the consequences of conformity. Max is stripped down to his underwear like other people, which symbolizes that he is forced to conform to soldiers fighting in the ... Vietnam War and killing people blindly. The use of full shots of soldiers dancing symbolizes that they are all the same and are no longer independent individuals. The music in the background "I Want You ... are used as weapons. From these two examples, it proves that new world has the power to brainw...

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... killed unless the demands were met. They knew that amnesty wasn't the most practical thing they were just holding onto threads of hope, it was kind of like a point of no return they couldn't give in until they absolutely had to. I think the mobilization and brute force used to retake the ... many people died, but commissioner Oswald and governor Rockefeller were growing tired and they wanted it recaptured quickly. I understand the reasoning on one end of why Rockefeller didn't go personally, they were afraid that if he went he would have to go and compromise every time there was a priso...

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• Grade Level: Undergraduate

... Wagnalls). Many times friction is an overlooked force which has had greater impact on our lives than we would generally think. Without the force of friction our everyday lives would be different. As defined, friction is a force that is created when two surfaces come in contact and move ... harder for surfaces to pass each other. Encyclopedia.com defines friction as a "resistance offered to the movement of one body past another body with which it is in contact." Since the force of friction is a resisting force, surfaces rubbing against each other are opposing each other, making the object...

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... the meaning that women exercise their control without a title in the long run since they are involved in making the connection to the previous acts of Esteban Garcia early on in the book. In Transito's case, when Esteban lost Clara and was old, he still went to the whorehouse and ... in the book has a big impact on the reader since it involves the reader to make the connection that even women prostitutes are in control. In Chronicles of the Death Foretold, Victoria Guzman, although at a lower social class, and was "tamed- by Santiago, she knew about Angela Vicario's brother's idea about...

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... the male dominated society. The Industrial Revolution needed women to succeed, though, without them it would have never come about. Women make up roughly 50% of the world's population so a revolution without women would have been impossible, as they were an important work force, for example in cotton factories or other ... " citizens as they did not have the right to voted and it was a male dominated society (this view was typical for the end of 18th century and beginning of the 19th century) therefore it was logical to pay them less. Even today some employers support this view and this...

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... as it passes down the barrel, but it leaves tell-tale marks on the bullet that are unique to that particular firearm. The presence of rust or spider silk indicates the gun has not been fired recently. At close range, particles from a wound may lodge inside the barrel. ... This information is extremely important to the manufacturers of the ammunition and weapon. The ammo manufacturer must design ammunition that works properly in the weapon. The shellcase must be strong enough to handle ... The larger the Taylor Index, the greater the stopping power. Using either the Taylor Index or Kin...

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... it also acts as a confidence builder. Making an effort to stop negative thoughts and think more towards positive ones changes the total mindset of that student. Instead of thinking negative thoughts about a test, the student needs to focus on doing well instead. Secondly, you're encouraged to start an exercise ... program. Exercise is a major stress reliever. It frequently is one of the best physical stress-reduction techniques available. It not only improves health and reduces stress caused by unfitness, but it also relaxes tense muscles and ... helps to sleep; a much needed benefit f...

• Word Count: 1363
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• Grade Level: High School

... we did in order to investigate the enigma known as the Coulomb balance. We began by using the apparatus shown in Figure 1. This coulomb balance consisted of a torsion balance made of fiber (A), a counter weight, damning vane, and a rod. The sphere b, when charged, would exert a force on sphere a, causing it to spin ... until the torques were balanced. First we aligned the apparatus correctly by rotating the knob on top so that the angle of torsion was zero. Next, ensuring that our measurements would not be wrong, and certain that our alignment was at zero, we double checked one more ......

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... in the same velocity and direction. Research Question Therefore, how do this cannon shoot its maximum distance with the same amount of power? What angle of projectile motion will gives the maximum distance traveled? This experiment purpose is to determine which angle the cannon need to be shot ... is vertical motion. Therefore, the projectile will reach the maximum height and minimum distance. Projectile will still reach its furthest distance even if the starting point of projectile is not 0 or not in a same level as the surface the projectile landed as long as it is shot in a 45° angl...

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... greater distance before meeting the air that followed across the bottom" (Knight, 2002, p. 104). This effect produces different pressures over and under the wing of a bird, and creates a lift. The birds' wings, in profile, look exactly like a modern airfoil, and scientists took this design and made it ... profile must begin to move in the air or liquid. In this case the airfoil is influenced by several forces. These forces are weight of the profile (downward), drag, which is braking force (against the motion), thrust, which usually provided by the engines (forward), ... as a consequenc...

• Word Count: 1636
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• Grade Level: High School

... were a body not subject to any external forces, including friction, it would continue in constant motion, with the same velocity and in a straight line. The amount of friction depends on several factors: the body's mass, the materials that compose both the body and the surface with which it is in contact, and the body's ... weight. The friction between a solid body and air, or water, is also affected by the shape of the body. Sprinters, swimmers, or distance jumpers, aim to decrease the body's friction with air, or water, so as to improve results. This is achieved by ... Every action has...

• Word Count: 1404
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• Grade Level: High School