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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Components of Force Vectors Equipment: String‚ spring scales‚ 1.00 kg hooked mass‚ supports‚ meter stick‚ protractor‚ 20-N spring scales. Objective: During this lab‚ you will investigate the relationship between the angle of an applied force and the magnitude of one component. You will compare your actual force with the theoretical force and provide a computer generated data table that calculates the theoretical values. You will graph your actual and theoretical values and provide a complete
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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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® keep it simple science Copying is permitted according to the Site Licence Conditions only Preliminary Physics Topic 4 THE COSMIC ENGINE What is this topic about? To keep it as simple as possible‚ (K.I.S.S.) this topic involves the study of: 1. THE HISTORY OF OUR UNDERSTANDING OF THE UNIVERSE 2. HOW THE UNIVERSE BEGAN (THE "BIG BANG" THEORY) 3. LIFE-CYCLES OF THE STARS 4. ENERGY FROM THE SUN‚ & ITS EFFECTS ON US but first‚ let’s revise... The Structure of the Universe The EARTH
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connection between electricity and magnetism. * When a current was switched on through a wire‚ it made a compass needle turn so that it was at right angles to the wire. * The current had produced a magnetic field strong enough to cause the compass needle to turn. Additional effects due to experiment * It was already known that an electric current in a wire has a heating effect‚ and may cause the wire to glow. This showed that the three phenomena of electricity‚ heat and light were connected
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Barack Obama: Man on a Wire By Steven Malik Shelton With the success of president Barack Obama’s reelection campaign which paved the way for him to exhaust a second term‚ he faces dilemmas as dangerous and precarious as he did during his first term. It is quite a balancing act that president Obama must perform if he is to maintain equilibrium between the demands of the wealthy elite and the
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OThe Physics of Airplanes Background: At any given moment‚ roughly 5‚000 airplanes crisscross the skies above the United States alone‚ amounting to an estimated 64 million commercial and private takeoffs every year (source: NATCA). Considering the rest of the world ’s flight activity‚ the grand total is almost incalculable. In order to understand how airplanes fly‚ we must break down the parts of an airplane and understand the physics behind the airplanes most important components: the engine/propeller
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Case # 1 Laramie Wire Manufacturing: Using Analytical Procedures in Audit Planning February 18‚ 2011 Laramie Wire Manufacturing‚ a medium sized company‚ is planning an initial public offering of its stock in the next two to three years. Laramie operates in a single 500‚000 square foot building complex. Laramie buys copper rod and plastic materials to produce insulated copper wiring. The building complex is composed of 3% office space‚ 57% production area‚ 15% shipping and receiving area
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The Physics of Carousel A Research Paper Presented to International program-physics Global Prestasi School In partial fullfilment of the Requirements for the IGCSE-Physics preparatory class by Nandira Kirana Thaib January 2013 TABLE OF CONTENTS Page What is a carousel?....................................................................................................... 2 History…………………………………………………………………………………………. 3 The Physics of Carousel……………………………………………………………………. 4 Bibliography…………………………………………………………………………………
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