Hyugen’s principle Every point on an advancing wave front provides a new point of source for the wave Predicts reflection‚ refraction und diffraction Maxwell’s equations All related equations and observations to electricity and magnetism into 4 little equations The electromagnetic spectrum The product of wavelength and frequency is speed is the speed of the wave: Photon Relationship between frequency and photon energy Planck’s Assumption:
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Practice Questions Chapter 5 States of Matter: 1. Identify distinguishing properties of solids‚ liquids and gases. Gas Pressure: 1. Calculate each of the following: (show your work) i. 740 torr = _______________ atm ii. 1.15 atm = _______________ in Hg iii. 780 mm Hg = _____________ Pa Gas Laws: 1. If a sample of 4.17 L of ethane gas at 95 C is cooled to -80 C at a constant pressure‚ what is the new volume? 2. Calculate the volume occupied by 8.072g of neon gas at a temperature
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Due to the principle feeder relatively simple‚ so long as the principle of control over their work and structure ‚ under the theoretical guidance ‚ combined with practical experience will be able to maintain good electromagnetic vibrating feeder maintenance and debugging. Electromagnetic vibrating feeder is a more complete particle orientation forced vibration double elastic system . The entire system is operating in a low critical resonance state‚ it is simple structure ‚ stable‚ low power consumption
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Dropping Out University For many teenagers‚ there are many negative factors that can lead them to drop out of university. The first cause that teenagers can’t get the right decision when they first graduated from school. The lack of responsibility and self-encourage keep them thinking that the university not good that caused by involving them with wrong kind of people or activity that lead to less focus on the importance of education. Another factor that cause a student to drop out university
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3 Question 1 (Marks: 20) On a straight‚ flat section of road‚ a car follows a truck. Initially (t < 0)‚ both are travelling at speed v0 = 90 k.p.h. The truck maintains constant speed throughout. The car is initially 2.0 seconds behind the truck‚ i.e. for t < 0 the car
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Part one: The Lab You will be helping Galileo perform the experiment to determine if objects with different mass fall at the same‚ or different‚ rates in the air and in a vacuum. Before you conduct your experiment‚ you need to form a hypothesis. A hypothesis is a prediction of what you think will happen in the experiment. The hypothesis is a statement that describes “if” a certain set of circumstances are present “then” there will be a specific result that will occur. Record your hypothesis here:
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Atomic Spectra Lab Purpose: The purpose of this lab was to identify the wave length and spectra of the two elements‚ mercury and hydrogen. The wavelengths of the two elements represent the characteristic energies of moving electrons. The spectra of the two elements are what side of the energy spectrum their wavelengths are on. Materials: • Hydrogen lamp • Mercury lamp • 2 diffraction devices • Flashlight • Paper • Pencil • Calculator Procedure: 1. Place
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Oxides with a perovskite structure yield many commercial ferroelectrics (materials that possess a net macroscopic polarization switchable under external electric field). The structure of these oxides‚ having a general formula ABO3‚ can be represented as a network of corner-sharing oxygen octahedra with higher-charge cations B located inside these octahedra and lower-charge cations A occupying the cavities between the octahedra. Typically the spontaneous polarization originates from the concerted
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ECE 4784/6784‚ Wireless Communications‚ Assignment 1 1. (15) A half-wave dipole is situated at the top of a cellular tower‚ oriented vertically on the tower. The current into the dipole is a sinusoidal current at frequency 870 MHz‚ with peak value I = 0.1 ampere. Consider a mobile receiver at a distance of d kilometers along the horizon. Remember the dipole pattern gives field strength E(d‚ θ‚ φ) = 60I cos( π cos(θ)) 2 aθ v/m d sin(θ) (1) a. Assume free-space propagation laws.
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Skit Rubric: Changes CATEGORY | 4 | 3 | 2 | 1 | Face and Body | Facial expressions and body language generate a strong interest and enthusiasm.Back is never turned toward audience. | Facial expressions and body language sometimes generate a strong interest and enthusiasm. Back is occasionally turned toward audience. | Facial expressions and body language are used to try to generate enthusiasm‚ but seem somewhat faked. Back is often turned toward audience. | Very little use of facial expressions
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