Contact angle Essays

  • Polypropylene Lab Report

    4585 Words  | 10 Pages

    (PP) film in which the surface of the film was modified by Oxygen plasma treatment. The PP film was treated in various intervals of time of 60 s, 120 s, 180 s, 240 s and 300 s with three various RF power settings of 7.2 W, 10.2 W, 29.6 W. The contact angle was measured to characterize the wettability. The oxygen functional groups were generated on the surface of oxygen modified PP which was observed by Fourier transform infrared spectroscope and it was resulted in the improvement of wettability.

  • Physics in Volleyball

    1755 Words  | 4 Pages

    into how the rules of physics can be used and are essential in the game of volleyball in all aspects of the game including serving, passing, setting, hitting, and blocking. Volleyball is a game of constant projectile motion with various types of contacts involved in each aspect of the game. In volleyball when serving one must stand behind the end line, which is 30 feet from the net. The net measures 90 inches, or 96 inches for men, from the ground. The goal is to get the ball across the net with

  • The Mathematics In Sports

    522 Words  | 2 Pages

    When researching the math behind sports, I found that there are a multitude of formulas that go behind the simple actions in sports such as basketball and baseball. Basketball is a game played between two teams of five players in which goals are scored by throwing a ball through a netted hoop fixed above each end of the court. Baseball is a ball game played between two teams of nine on a field with a diamond-shaped circuit of four bases. To be successful in these sports, one must make their baskets

  • The Physics of Volleyball

    1318 Words  | 3 Pages

    There a few basic possible ways of legally contacting the ball: serving, passing, setting, hitting, and blocking. Each is unique and yet similar. The contact between the player and ball forces a “collision” and different laws of physics explain the actions or reactions of these collisions. This is what makes volleyball so exciting. One type of contact is a serve. To serve a player must be standing behind the end line and hit the ball over the net. The player tosses the ball into the air with one

  • Defining History

    581 Words  | 2 Pages

    Tompkins examines the conflicts between the English settlers and the American Indians. After examining several primary sources, Tompkins found that different history books have different perspectives. It wasn’t that the history books took different angles that was troubling, but the viewpoints contradicted one another. People who experience the same event told it through their reality. This becomes a problem when a person who didn’t experience the effect wants to know what happened. Tompkins said,

  • Friction

    871 Words  | 2 Pages

    have a very high risk of getting into an accident. Before getting into a car your should know how to handle it well, be aware of your surroundings and the conditions of your environment. Friction is the resistance to motion between two objects in contact with each other. When the resistance related to the tires on the car against the road, it is called traction. The traction points on your car are where the rubber on your tire touches the road’s surface. There are three main traction purposes: putting

  • Ultrafiltration Process

    2032 Words  | 5 Pages

    What exactly do we mean by Ultrafiltration, and for what processes can it be used? Ultrafiltration is a process by which one uses a pressure-driven process utilizing a specific-sized membrane to separate macromolecular weights of a solution, allowing the transfer of the low molecular weight (permeate). Ultrafiltration is exclusively defined by the pore size range (0.1 – 0.001 microns) (Dhawan). Ultrafiltration is used in a wide array of applications, such as food and beverage, chemical, pharmaceutical

  • Anti-Finger Smudge Coating

    1522 Words  | 4 Pages

    coatings. Unwanted finger print smudges on touch screen surfaces significantly reduces the performance and utility of the device, as well as the quality of the image and the enjoyment of the user. Smudges are composites of materials resulting from contact with human skin and from being stored in pockets. The goal of anti-finger smudge technology is to minimize and/or eliminate finger smudges on touch screens, making them easier and more enjoyable to use. Another unexpected but beneficial effect of

  • The Physics of Basketball

    1941 Words  | 4 Pages

    as a contact force. Using this concept of contact force a shot can be calculated exactly. From a player’s height, the mass of the ball and a given position on the court which would include the distance from the basket it is possible to calculate the exact angle and force the shooter must apply to make a basket every time he or she shoots the ball. Of course if it were this easy basketball would not be as fun to watch or play. The problem with hitting a shot every time with the calculated angle and

  • Investigating Factors that Affect the Swinging Of a Pendulum

    1958 Words  | 4 Pages

    pendulum, I need to test all the variables available. There are three variables we will be investigating: * The length of the string * The mass of the pendulum * The angle from which the pendulum is swung For each experiment, I will change the length/mass/angle five times, and repeat each length/mass/angle just once. Therefore, I will be doing a total of 15 experiments. Experiment 1 I will investigate the relationship between the length of the string, and the time it takes

  • Physics of Rock Climbing

    1264 Words  | 3 Pages

    be applied to both systems is that of the angles involved in the system. The greater the angle at the bottom of the anchor system, where the rope attaches to the anchor, the greater the force that is exerted on each anchor point. The table below reflects this. The American Tringle is an anchor made in the shape of a triangle. The force on either anchor point is equal to where F is the force exerted on the lowest carabiner in the system. With an angle of 60 degrees this force is equal to the force

  • A Biomechanical Analysis of the Roundhouse Kick

    1575 Words  | 4 Pages

    with the kicking leg traveling in an arc towards the front with the knee in a chambered position (Pearson, 1997). The knee is extended in a snapping movement, striking the opponent with the top of the foot. One’s goal would be to make front torso contact with the kick, while avoiding leaving one’s self open to a counter strike. The movements that comprise the roundhouse kick begin with a fighting stance: both feet on the ground, toes pointing straight ahead, back foot turned outside up to 22 degrees

  • The Relationship between the Angle of Elevation of a Ramp and the Speed of a Bal

    2227 Words  | 5 Pages

    The Relationship between the Angle of Elevation of a Ramp and the Speed of a Ball Introduction In this piece of coursework I'm going to investigate and measure the speed of the ball rolling down a ramp. From the data that I'm going to collect I'm going to be able to work out the Gravitational potential energy when changing the height, the friction force acting on the ball whilst it rolling down, and finally the kinetic energy exerted by the ball. Planning Fair Testing Before

  • Mavis Gallants Bernadette

    1009 Words  | 3 Pages

    Mavis Gallant's Bernadette Fear, it has a way of controlling everything that it comes in contact with. As young children we are introduced to this intimidating desire with intrigue and suspicion. As we age, the thoughts of fears become more like realities, ideas of loneliness and death enter the picture as comprehensible thoughts and views of the future. These issues make up the foundation of the Mavis Gallant story "Bernadette". In this story we are presented with the image of a young French Canadian

  • Historical Events that Impacted Contact Improvisation

    761 Words  | 2 Pages

    Historical Events that Impacted Contact Improvisation Dance has evolved greatly throughout the centuries. It began with ballet and has led up to contact improvisation. This form of dance begun in the early 1970's and was started by a man named Steve Paxton and a group of postmodern dancers from New York City. Contact improvisation is a partnering form of dance and known as the art of moving spontaneously with a group or another person. This form of dance does not require the exact set of

  • Cross Cultural Negotiations

    929 Words  | 2 Pages

    proceedings. By way of highlighting this, a few brief examples of topics covered in cross cultural negotiation training shall be offered. Eye Contact : In the US, UK and much of northern Europe, strong, direct eye contact conveys confidence and sincerity. In South America it is a sign of trustworthiness. However, in some cultures such as the Japanese, prolonged eye contact is considered rude and is generally avoided. Personal Space & Touch: In Europe and North America, business people will usually leave

  • Contact

    951 Words  | 2 Pages

    surface must not have irregularities larger than about 1/5 the wavelength of light that is being focused. By that criterion a radio telescope is several hundred thousand times easier to figure than an optical telescope of the same size In the movie "Contact," astronomer Ellie Arroway, played by actress Jodie Foster, searches for signs of extraterrestrial life using massive, Earth-bound radio telescopes. Much of Contact's scientific intrigue, based on Carl Sagan's 1985 bestseller, unfolds at two National

  • blurred lines

    1234 Words  | 3 Pages

    Blurred Lines Today we live in a world that keeps us on the run. There is a way to get in contact with anyone at any given time. There is no such thing as ‘getting away’ because we have created a society of people that want to be found. But it is also through this technology, the same one that keeps us connected to the outside world, that we can get lost. The simplest video game can help a person escape into a different reality, spending hours on end in front of a computer screen, looking for

  • Physics of the Human Eye

    2079 Words  | 5 Pages

    fascinating organ. It has the ability to see past the horizon and observe the different colors of a rainbow. The eye can be quicker then a race car but slow enough to witness a snail crawling across a beach. The eye can capture objects at various different angles, such as birds flying overhead or a person walking right beside you. Yes indeed, the eye is probably the greatest sense a person can have. The eye is so vast and complex. To try and write everything about the eye would take a very long time. Compiling

  • Analysis Of The Free-throw Shot

    1495 Words  | 3 Pages

    until after the ball makes contact with the rim. When performing this skill you should also be aware of the other factors that could influence your accuracy in performing the free-throw. The rim is fifteen feet from the free-throw line on center. Also you should be aware of the fact you can fit three basketballs through the rim at the same time if placed together. Also the rim is ten feet high from the floor, meaning you have to make sure win shooting the ball, that the angle is higher than ten feet