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ReviewTest - woves Light ond Modern June aOtO oll This test hod?4 creditsof 85 for this sectionof the course(obout28 %). Answer guestionsondgrodeyourself on lost poge' (l,ae)fta4.t A P"..t Baseyour arrswersto questions 24 through 26 on the information and diagam below. A longitudinal wave moves to the right through a uniform medium, as shown below. points i, B, C,D, and E representthjpositionJ of particlesof the medium. Wavemovement t t t t tl movesto the right? 24 Which diagam best representsthe motion of the particle at position C as the wave l. <'# /" @' \ o c o) 25 The wavelengthof this wave is equal to the distancebetween points BandC 4) eandB BandE Aandc a o @ 26 The enerpy of this wave is related to its @ "*pui-,,a" speed wavelength @J period through flint glassand into 27 A. rayof monochromatic yellow light (/ = 5.0g x l01a Hz) passesfrom water m"dinm X, as shown below. Normal MediumX The absoluteindex of refraction of medium X is @ lurr than 1.33 6 geater than 1.33andlessthan 1'52 greater than 1.52 and lessthan 1.66 equal to 1.66 33 What total massmust be converted into enerry 28 A light ray traveling in air enters a second to l'71 x 108meters -"din. and its speed'slows per second. What is the absolute index of iefraction of the secondmedium? r.oo @ (A o.sto to produce a gamma photon with an energy of 1.03x l0_rsloule? 1.14x l0ro (! tzs Sr 3.a3x Wn @ r.e4 u 29 Playing a certain musical note on ^a trumpet causes"thespring on the bottom of a nearby snare dmm [b vi6rate. This phenomenon is an exampleof d) ,"rorr*"" d refraction /.i) @ reflecdon diffracuon Compared to the massand charge of a proton, an antiproton has the samemassand the samecharge greater massand the samecharge 'fh" r"-" massand the opposite-"h"tgu greater massand the oppositecharge Note that question 35 has only three choices. 30 In a vacuum,all electromagneticwaveshave the same frequency (fi speed wavelength 35 As viewed from Earth, the light from a star has lower frequenciesthan the light emitted by the star becausethe star is (0 it"" rfl moving toward Earth @ moing awayfrom Earth (Jl stationary 3l A particle that is composedof two up quarks and onedownquarkis a 6 meson 0J neutron 3.09x 10r 8.75x 102e proton positron 32 A helium atom consists of trvo protons, two electrons,and two neutrons.In the helium atom, the strong force is a fundamental interaction benareen tie Q electrons,only () electronsand protons O neutronsand ilectrons neutronsandprotons 6 17l [ovER] 48 The diagram below representsa periodic wave traveling through a uniform medium. F_6.0 m___l If the frequency of the wave is 2.0 hertz, the speedof the waveis g (fi a.o"ttt @ 2.0n/s 8.0m/s 4.0 n/s 49 The diagrambelowrepresentsa light ray reflectingfrom a planemirror. Planemirror The angleof reflection for the light ray is Q zs" eJ 35" 8:s; 50 The &agram below showsa standingwave in a string clamped at each end. What is the total number of nodesand antinodesin the standingwaveP 3 nodesand 2 antinodes @ 5 nodesand4 antinodes 2 nodes and 3 antinodes @ +nodes and 5 antinodes Baseyour answersto questions 69 through 71 on the information and diagrambelow. Baseyour answersto questions72 through 75 on the information below. A monochromaticlig\t tay(f --5.09i I}L4HZ) traveling in air is incident on the surface of a rectangilar block of LrPite' As a mercury atom absorbsa photon of enerry, an electron in the atom changesfrom energy level d to enerry level e. ) Nonmal 72 Determine the energy of the absorbedphoton in electronvolts. It] Light ray 73 Express the energlr of the absorbed photon in joules. [t] Air Lucite 74 Calculatethe frequency of the absorbedphoton. [Show all work, including the equation and substitutionwith units.l lzl 75 Basedon your calculatedvalue of the frequency of the absorbed photon, determine its classi{icationin the electromagnetic spectrum. Air Measure the angle of incidence for the light ray to the nearestdegree. [t] ;r: Calculatethe angle of refraction of the light ray when it enters the Lucite block. lShow all work, including the equation and substitution with units.l [z] 7T What is the angle of refraction of tlie light ray as it emergesfrom the Lucite block back into air? lrl PS/PhysieJune '10 lrl Ant{er lwn JL", t 2 ' l .- Li __- 26 _-77 2E rl 2 - 6 -- 3t ll J) 7^rI 't) Y{ ,{1 5a -r </ , a 61 - /4. Qq-.iJc^.c - 7l 6 7L 1 i Antr/sr twT Jht, t Noo" l.org Krv 2 " 1.- 4 L ' , . L 26 | 77-1 2 8 ) 11 l 30 I 1t 3 "'l 1l ) 4 J t l _rf ) )5 L 't) [7^"1 | fl l a 3 ,t1 | 7L ^ sa ) 7J -- 5D €i-.;J."., 61 ' 7l ll ,Jta6,'n^3t.r 7t ji 5o" 1.76 7'( ' {^ //a't1J h{ / . 7 6 r / a - , 3. 6 . 6r , d J , , G \ ) f ' 2 , ? 1x t o ' h 1 €^ I t , n5 o ' " 1 , 5 1 ,8" U 0," Jlo -" "Z'ltu _/ 7t- i " 6aceJ