mm‚ where x is A) less than 6.5. B) greater than 6.5. Answer: B Var: 1 7) If an operatic aria lasts for 5.75 min‚ its length expressed in seconds is x s‚ where x is A) less than 5.75. B) greater than 5.75. Answer: B Var: 1 Generic Physics: Topic 1 -- CVC 5/23/11 -- Page 1 8) Scientists use the metric system chiefly because it is more accurate than the English system. A) True B) False Answer: B Var: 1 9) When adding two numbers‚ the number of significant figures in the sum is equal to the number of significant
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HG-1 THE HEAT OF FUSION OF ICE Introduction When heat flows into a system there are a number of things that can happen. One result could be a temperature rise. Or‚ the system might even catch fire. A third possibility is a change of state. As you know‚ matter exists in three states (or maybe four‚ the fourth being a plasma)‚ solid‚ liquid and gaseous. At different temperatures‚ the same substance may be in different states. Each state is characterized by the way the interatomic forces act. In solids
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1. Properties of light Reflection The speed of light is measured through the equation: v = λ f. However‚ it turns out that when light is reflected off a surface its speed stays the same. This was first proven by Sir Isaac Newton. Under the assumption of perfectly elastic collision‚ the laws of reflection follow from the laws of motion. To demonstrate‚ consider a particle traveling towards a flat frictionless surface whose horizontal and vertical velocity components are: VX and VY. When the particle
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The Ballistic Pendulum Crime Lab Physics You are a criminologist‚ and have been given a gun which has been used in the commission of a crime. Both prosecution and defense claim that "muzzle velocity" (speed of the bullet as it leaves the gun) is crucial to the case. Your job...FIND IT! Shown below is a diagram representing a "ballistic pendulum." The bullet is fired into the block‚ the bullet-block combination rises by a height h as shown‚ a little physics is applied‚ and ...voila!...there
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Experiment in Physics Lab Report Renelle L. Gapay Department of Physics Isabela State University-Ilagan Campus‚ Calamagui 2nd‚ City of Ilgan‚ Isabela Ellenergapay_23@yahoo.com Abstract In this experiment you can prove that electric charges can produce by using only a balloon and pieces of papers you can understand further static electricity and charges. And how it is produced. Introduction Have you ever wondered why rubbing a balloon make pieces of paper attract with it? The effect
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Measurements Lab Report Measurements Cassandra M. Murphy Grand Canyon University: Physics 1 Lab September 5‚ 2013 Testable Question: Circular objects; what happens to the circumference as the diameter changes? Hypothesis: As the diameter increases‚ the circumference will increase in a proportional linear way. This is because as the diameter increase‚ the object will as well. Variables: Independent- The diameter of the circular objects. Dependent- The circumference of the
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Version 1.0 General Certificate of Education (A-level) January 2012 Physics A (Specification 2450) PHYA2 Unit 2: Mechanics‚ materials and waves Final Mark Scheme Mark schemes are prepared by the Principal Examiner and considered‚ together with the relevant questions‚ by a panel of subject teachers. This mark scheme includes any amendments made at the standardisation events which all examiners participate in and is the scheme which was used by them in this examination. The standardisation
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I. Temperature Measurement 1. A thermometric property is a physical property that changes in a known way with temperature‚ and can therefore be used to measure temperature. The substance used as a thermometer must have a property that varies proportionally / linearly with temperature. [ In other words: When objects are heated or cooled‚ their temperatures change‚ along with some of their properties‚ these properties are known as Thermometric Properties.] Two commonly used thermometric properties
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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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