REVIEW+OF+GRADE+11+PHYSICS

Each pair should complete the chart for two exhibits.

the Answer || Forces || The shorter the length of the string (d) is, the more work will be required in order to generate enough force to lift the load. || W = FΔd F = W/Δd || Yusuf and Virginia || the mass of the wooden disk is distributed evenly, rather than only on the edges. Due to this, less energy is required to make the wooden disk move forward/increase velocity. || F=ma a=F/m || Virginia and Yusuf || Principles of simple barometer: 1. mercury is poured into a glass tube 2. the tube is inverted and placed in the dish of mercury. the air pressure on the free surface of mercury balances that of the mercury in the tube. As air pressure changes so does mercury's height. ||  || Arlanna & Gupriya || vibrates. Therefore, no air would result in no sound. ||  || Talha & Rabeea || Never Meet || Magnetism || Unlike charges attaract and like charges repel. In the case of the Magnetic Twain, both the ends facing each other have the like charge. Therefore they repel each other. ||  || Ajmeet & Bre || || Constructive Interference //A// = //A//1 + //A//2 //Destructive Interference// //A// = |//A//1 − //A//2| || Marco & Julie || A resonant frequency is a natural frequency of vibration determined by the physical parameters of the vibrating object. - It is easy to get an object to vibrate at its resonant frequencies, hard to get it to vibrate at other frequencies. - A vibrating object will pick out its resonant frequencies from a complex excitation and vibrate at those frequencies, essentially "filtering out" other frequencies present in the excitation. - Most vibrating objects have multiple resonant frequencies. ||  || Talha & Rabeea ||
 * EXHIBIT NAME || KEY CONCEPT || EXPLAINATION || EQUATIONS || PAIR NAMES ||
 * Strength Is Not Always
 * Can You Pick the Winner? || Forces || The wooden disk reaches the finish line before the metal ring because, unlike the metal ring,
 * Watch This Race || Forces || Two balls of equal mass are released at the same time from the same height, except one follows a linear path with a downward slope and one follows a curved path downward. Both the paths end at the same point. The ball traveling on the curved path reaches the finish before the one traveling on the linear path. This is because the ball on linear path moves downwards with a constant force and acceleration due to gravity while the ball on the curved path speeds up as its acceleration increases as it moves forward on the curved path, hence moving faster than the ball on the linear path. || F=ma || Ali & Shen ||
 * Newton's || Energy || For every action there is an equal and opposite reaction ||  || Julie and Marco ||
 * Blowing Up a Balloon and Simple Barometer ||  || Usually a balloon is blown up by raising the air pressure inside it. the balloon is inflated when the air pressure outside is lowered.
 * Sound Without Air || Sound & Waves || Sound is created with vibration, so without any particles in the air, there is nothing that
 * Making Waves ||  ||   ||   ||   ||
 * Magnetic Levitation || Electricity and Magnetism || The current flowing from the copper coil induces opposite electrical charges at each end of the rod. The magnet has the same poles on either side, so each side repels. This makes it seem to levitate. ||  || Mariah & Danielle ||
 * The Magnetic Twain Shall
 * Bicycle Generator || Transformation of energy || The energy invested into the system through pedaling is transfered into electrical energy to light up the bulbs and take the photograph. Chemical (of metabolic processes) -> Kinetic (movement) -> Mechanical -> Electrical. ||  || Shen & Ali ||
 * Transformer ||  ||   ||   ||   ||
 * Van de Graff Generator ||  ||   ||   ||   ||
 * Clap Your Hands ||  ||   ||   ||   ||
 * Wave interference || Interference (Waves) || It is the interference of the two sets of circular waves. If a crest meets a trough, they cancel each other. If two crests meet, they combine to form a supercrest.
 * Steel Rod Band || Waves and Sound || When the sliver rods are struk by the metal rod the rods vibrate. When vibrating they vibrate the particles in the air one after another until it reaches your ear creating sound. Since each rod is a different lenght, they all produce different frequnceys and thus produce a different pitch. || v=λƒ || Jennifer and Julia ||
 * The Beat Goes On || Waves and Sound || Standing waves are produced when the sounds waves and reflected waves collide in an area where the air pressure is low enough to allow the liquid to rise ||  || Mengdi and Becca ||
 * Seeing the Invisible ||  ||   ||   ||   ||
 * Wave Interference ||  ||   ||   ||   ||
 * Resonance Motif ||  || At certain frequencies, objects vibrate faster and more vigorously.
 * Standing Waves || Sound & Waves || Sound waves of certain frequencies can become standing waves, thus proving that sound waves from the source and those reflected back, reinforce each other. || v=λƒ || Arlanna & Gupriya ||
 * Diving Fish ||  ||   ||   ||   ||
 * Harmonics ||  ||   ||   ||   ||
 * How Friction Fades || Forces || In this exhibit, a thin layer of air is forced underneath a round disc. The layer of air reduces the force of friction between the objects to near zero enabling the disc to move more easily. In this case, the coefficient of friction (μ), which depends on the surface one is dealing with, decreases thus decreasing the frictional force. || F//f// = μ F//n// || Jennifer and Julia ||
 * Air Wheel || Waves and Sound || Sounds could be made by series of rapid changes in air pressure. The keys are pushed to blow air into the machanism and create such changes in order to make sounds. Different keys could create different kinds of sound, a music note or noise, because music is of regualr series and noise is irregular. ||  || Mengdi and Becca ||