Objectives: • To be able to explain how the photoelectric effect experiment works and why a photon model of light is necessary to explain the results. • To study the effect of intensity of light on photoelectric experiment. • To estimate the Planck’s constant‚ h through the simulation. • To be determine how to calculate the wavelength of light‚ the work function of the metal‚ or the stopping potential‚ if given the other two. Beginning with the plate made of sodium. Keep all the parameters
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Energetics Worksheet 1. Calculate a value for the Lattice Energy of Calcium Chloride from the following data. Draw energy cycles Std. Enthalpy of Formation of CaCl2 = - 795 kJ/ mol Std. enthalpy of atomisation of calcium = + 177 kJ/mol Std. enthalpy of atomisation of Chlorine = +121 kJ/mol 1st ionisation energy of calcium = +590 kJ/mol 2nd ionisation energy of calcium = +1100 kJ/mol Electron Affinity of chlorine = -364 kJ/mol 2. Draw Born-Haber cycles and calculate the L.E. of Cu2O and CuO
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I absolutely love jumping on the trampoline but I never really thought there was any physics involved. I knew you had to use a force to jump up and gravity pulls you back down obviously. An American inventor named George Nissen first invented the trampoline in 1935. (Silvia) A trampoline is defined as an elastic disc of hard canvas held up by metal springs attached to a metal skeletal frame. Kinetic and Potential energy allow you to be able to jump on a trampoline. PE=mgh this equation helps you
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Since the birth of Physical Review Letters fifty years ago‚ condensed matter physics has seen considerable growth‚ and both the journal and the field have flourished during this period. In this essay‚ I begin with some general comments about condensed matter physics and then give some personal views on the conceptual development of the field and list some highlights. The focus is mostly on theoretical developments. DOI: 10.1103/PhysRevLett.101.250001 PACS numbers: 01.30.−y The transistor
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Introduction to Physic 1.1 Understanding Physics • A phenomenon is an occurrence that can be perceived by our senses • In physics‚ we study natural phenomena‚ such as the eruption of volcano‚ rain fall‚ formation of rainbow and the properties of matter‚ such as length‚ temperature‚ volume • There are many fields of study in physics‚ including force‚ motion‚ heat‚ light‚ waves‚ electricity‚ electromagnetism‚ electronics and nuclear physics 1.2 Physical Quantities • We discover physics by learning
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people fail to realize the importance of physics in athletics. People who are untrained in the scientific field may believe that an athlete’s performance level is solely based on their skill-set‚ such as strength and training. However‚ one’s ability to employ physics concepts is the true determinant for success. This is imperative to dancers; most movement and technique can be improved dramatically by following Newton’s laws accordingly. By utilizing key physics concepts‚ a dancer can improve by locating
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AS Level Physics: Terms & Definitions:- Measurement Random errors are errors of measurements that result in a scatter of readings about a mean value. Systematic errors are errors of measurement which occur according to some fixed patterns such that they consistently give out an over-estimation or under-estimation of the true value. Accuracy is a measure of how close the results of an experiment agree with the true value. Precision is a measure of how close the results of an experiment
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Physics can be related to sports and fitness on many different levels. When you lift weights‚ play sports or even buy athletic equipment you probably don’t know how much physics was really put into any of it. Weightlifter’s need to know which workout is better. Also the equipment athletes use relate to physics. Manufactures design equipment for athletes‚ which involve physics. The manufactures need to think about what will make the object better and what materials will cause the equipment
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The Physics of Basketball Brittney LeBlanc Physics 122 Physics comes into play throughout our lives‚ in absolutely everything we do‚ especially in sports such as basketball. Although you do not need to be a physician to become a basketball player‚ if you understand the basic physics of basketball‚ it can be very beneficial to your game. Specifically‚ understanding the physics behind shooting‚ passing‚ and dribbling the basketball. A Canadian named‚ Dr. James Naismith‚ was instructed to create an
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design of a yo-yo.3 A yoyo works by converting potential energy into different kinds of energy as it falls down. When the string is tightly wound around the axle and the yoyo rests in the person’s palm‚ the yoyo has a lot of potential energy. The potential energy is turned into the two of the following: gravitational energy and the potential to spin as it unwinds. When the yoyo is allowed to fall‚ the potential energy turns into kinetic energy giving the yoyo linear momentum and angular momentum
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