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This 37 page Class Notes was uploaded by Nathaniel Monahan on Tuesday October 20, 2015. The Class Notes belongs to PHYS0002B at Sierra College taught by Staff in Fall. Since its upload, it has received 30 views. For similar materials see /class/225390/phys0002b-sierra-college in Physics 2 at Sierra College.
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Date Created: 10/20/15
February 04 2008 Reminders 13108 llext Webassign Due February 3 Wave Motion and Sound Conceptual Questions Due 131 Read Chapter 15 Exam 1 Tuesday February 5 Chapters 13amp14 Write your name and last 4 digits of ID on random page in book Do not leave books unattended it will disappear Objectives Finish up Chapter 14 Electric Charge Conservation of Charge Coulomb39s Law The Electric Field Physrrs 28 Old Exams February 04 Exams exam 1 Cnncegtual Questions 3quot 2 m be assigned as needed a 3 was mum Asuund 4 r em Nata me abuve sample exams were usen In cliss perluas that were 5n minutes In Ien m As a result same at me exams were camblned Into one exa en lcrlbmu Rummy an MadaIr bum Fhlms39 491s nausea Emil emamMenmuegeeru Ol ns Innall39um 57mm OM02 haulsTBA arby appul39nlmsrll l Resaurres l Phys Dept l slene l February 04 2008 Based on the range of human hearing what are the lengths of the longest and shortest pipes open at both ends and producing sound at their fundamental frequencies that you would expect to nd in a pipe organ M sswmb W A2 4 2032 20996Hg Xhquot 9nh uo 1 4039s 0390quot ll VIS gm 4636395 Ueu ksaL L 5M 0003395wx A person hums into the top of a well and finds that standing waves are established at frequencies of 42 70 and 98 Hz The frequency of 42 Hz is not necessarily the fundamental frequency How deep is the well 99m 6 ML and L 5 an l n0 Ii wLNn 395 0 4 N39an y 1 f 4110375 a V 10 35x1 52quot 5 5g ti ath uquot 3 3 53 Chi H L L 0 S C 1 3 I 1 3 1 c tl Va SL O39JS u 3 4039 N u Es Wham p 3 L is 7 s an February 04 2008 Untitled March 10 2008 Reminders 30608 llext Webassign Due March 13 Magnetic Field Conceptual Questions Due March 13 Exam 2 will be Returned No Earlier than Friday Objectives Magnetic Fields Magnetic Forces g1 L 3 l i l r13 Untitled March 10 2008 From the drawing shown rank the speeds of the charged particles from fastest to slowest Assume the mass and magnitudes of the charges are the sa me LL mquot ridquot 3 C N39 A B 3 a L Assuming the magnetic eld points into the page what is the sign of the charge AB and C 139st f5 Wager 7i9827O V I ggggtgg ggtmewgtt atestbrttgttfted Mm qutxrleiarii 24 Chapters 2225 bReeced 2182113 q en iif pamiasoemcemed Diffraction tif ctiiies Properties of Electromagnetic Waves Eectromagnetic Spectrum Nature of Light Doppler Effect for Light Mar 225104 PM Red Light from a He Ne laser k 6378nmis incident on two narrow slits szparaied by 0200mm A fringe pattern is J observed on a while sheet of paper held 100m away How far abnve and below the central axis do the rst dark minima minimum intensity occur When is the L x 539 order brighl kings d s 3 m Ansth j m mm w w39 h a 0 d s we 1 i1 2th S3 T337 swo L32 1 and 100001 a 390 8 L i 5 1 am D f OOLS A 135 9 5 Stub the 6 L huh Lsm 4 4 54h Ham Wt MM 10 Egg Palm Mam Aerzaz PM 372 3 Vm W an Jam 13 EBWW e z an 1 mw w ii 3 SHE Apmm 19PM A telescope lens with an index of refraction of 155 is to be coated with a Mng n138 to increase the transmission of yellow light 39A 550nm What is the minimum thickness of the coating Hint the goal is to minimize re ection to maximize transmission Answer 996w dcb imdmia M I quot Q 6 a CM 5gt5 SW mew 1 ka Mao Qi h u t3 szw 3 mm A AerzazPM A hum of vzr a y pohdud light is inddmt on 3 pohmid lms The transmission axis of the In polarizet is a 0 degree with leaped kn the verdcalAhe 2quot is a 400 with leaped the the va ml and the 3 quotI is a 750quot c ver palcent of the incidml light is transmitted thmugh all three polamidn Answer dimly39 195 if incident Light is unpohrizzd Aprmzaz PM Reminders 32508 Chapter 20 homework due 327 Exam 3 April 1 Read 2182113 Objectives More on Induced EMF and Current Magnetic Flux Faraday39s Law and Lenz39s Law AC Generators and AC Motors Eddy Currents Mar 225104 PM What is the ux through a 10m by 20m door in a uniform Id of 025T that is parallel to the floor if t eA oori Tmriially opened at 30 N wquot h Jinn1m 1 3 To IWJJ J B ACOhe zs0u osw hg t39 Tun m 5 MaMEIrBAE PM A wire is bent in the shape of a tent with 6 60 and L 14 m and is placed in a uniform B eld of 025 T directed J to the tabletop If the tent is attened out in 014 s what is the average induced emf in the wire during this time Note the eld lines enter the bottom surface and leave the side surfaces 2 Liusa 9 g g 339 cit13956 AEOQMAQE gg sacje 4 63 mag gait 1 3 Wm A st m a 3 S v 59 MaMEIrBAE PM Example What is the maximum torque delivered by an electric motor if it has 80 turns of wire wrapped on a rectangular coil of dimensions 250 cm by 400 cm Assume that the motor uses 100A of current and that a uniform 0800T magnetic eld exists within the motor If the motor rotates at 3600 revmin what is the peak power produced by the motor 1 5 MAKE quot65 mXb stXwnlm s atth vs IV 2 1 NA39bu 5m AWvm 9 Quit Walk MarmrBAE PM Because the coils of any motor rotate in a Bfield EMF lS Induced back EMF which tends to oppose the applied voltage V Thus the net voltage across the motor is Vs and the current drawn by the motor is IV 5R Suppose a motor has a resistance 419 It is then plugged into a 120V outlet At normal speed the back EMF is 118V Calculate I at startup and at normal running speed I 39 x aunt Ta moveNib g rums g 39FE Marmr z PM Untitled May 02 2008 Reminders 42908 Watch Your Books for the Next Two Weeks Robert Barchfeld 3PM Wednesday 5105 Exam 4 Average 72 Read Chapter 26 Objectives Introduction to Relativity Time Dilation Length Contraction Simultaneity and Synchronization Relativistic Dynamics Untitled May 02 2008 53quot 4 W k quumd 0 taeom T QM LC N s H ic 5 s E N RSCBXIG quot395 N3 load 31 OYQ39K 50 7 EN At 5 1p what gt Is 1 quot v 6GMM Qy u At 2 gird C T MW I39Ll koxt to 3 MUCH To Lao 0145 N o 6 16 a 237me Untitled May 02 2008 Frame 1 Frame 2 In frame 2 lightning strikes occur at same time to 02 But according to 0239 O1 sees event at front of car rst because in the time it takes the light to reach 02 the car has traveled vAt Thus 02 concludes events are not simultaneous in 01 frame Untitled May 02 2008 According to Frame 1 the length of train is L n39yLn where Lo the is the distance between strikes observed by stationary it also corresponds to length of train as seen by 02 The length of the stationary vehicle as seen in Frame 1 is LPLny Moving Stationary rrn According to Frame 1 lightning strikes the back of the train when A1 and A2 coincide This happens in a time At1Ale yLu LoWv vyLDIc2 after it strikes BI Frame 2 say this happens in a time At2 vLocz Untitled May 02 2008 Astronauts in a spaceship traveling at v06c past the Earth sign off from space control saying that they are going to take a nap for one hour and call back How long does their nap last as measured on Earth Ans 125 hrs How fast must a meterstick travel to measure the same length as a yardstick Ans v0406c I let s Gng 2 Has Untitled May 02 2008 In a typical nuclear fusion reaction a tritium nucleus 31Hm280894MeVc2 and deuterium 21H fuse together to form a helium nucleus 4He m372741MeVc2 plus a neutron How much energy is released in a fusion reaction Untitled May 02 2008 r A proton and an antiproton at rest annihilate according to the reaction p gt 39Y 39Y Why must the energy of the emitted photons be equal Calculate the energy of each photon Untitled May 02 2008 A electron and a positron at annihilate according to the reaction e e gt 39Y 39Y If the headon collision produced two 20Mev photons what are the kinetic energies of the two particles before the collision Untitled April 07 2008 Reminders 32708 Chapter 20 homework due Tonight Exam 3 April 1 Read 2182113 Lens Lab Has Been Changed Objectives Properties of Electromagnetic Waves Electromagnetic Spectrum Nature of Light Doppler Effect for Light Untitled April 07 2008 A beam of light travels from air into water 11133 The angle of incidence is 31 Find the angle of refraction m 5MB s 115an1 ueL33 1 l 9551 Sinai 4 5m n l 62 5M sin9 39l L sun mm 31 w 239 J Untitled Apn39l 07 2008 A beam of light travels from water into ai139 n133 The angle of incidence is 31 Find the angle of refraction What happens if the angle of incidence is 4amp7quot 49 sm 6 t5m9Z 93 5V 3 LIB L l blhaa 5 n9 Bumsquot 13 5 4 at 19 If 9 c bInB 323 ain t 7i nhnull1 uth ummea Aprll 07 2005 Untitled April07 2008 incidentwavefront 39 I heldth ray Geometric derivation of i Snell39s law incident ray ll 81 interface quotr t k k 2 i 2 A c ismI a D 2 x I 1 M refracted wavefront 5 9L i u 3 Waves In 2nd medium it have different v than y Munoz b git medium 5quot hm Untitled Aplil 07 2008 incident wavefront Geometric derivation of incident ray Snell39s law a m inciden 3391 1 5 1 5mg 5 a39l 81 interface A 91 c 39r 2 5x 3 E 9 c A Ac L39 A 2 ihb39 a D 3 X I 2 refracted wavefront 5 quot 91 My 3 Waves In 2nd medium A have different v than WM Mt l1 I L l 39 39 le Jet medium 01quot m msmn Rethint r i9827O8 I I mansc rieea aarrangem namr remittapters 2225 Read 2182113 agarng Has Been Changed nterference and Young39s Experiment ieffti xies Properties of Electromagnetic Waves Electromagnetic Spectrum Nature of Light Doppler Effect for Light Mar 225104 PM An object is placed 40cm to the left of a double convex lens of focal length f120cm Determine the location of the image Is it real A second lens of focal length f260cm is placed 120cm to the right of the rst lens Determine the location of the image Is it real Draw a ray tracing diagram of the Apr74222 PM 4 I if AcumyhmomJuM 115 n Wave optic Yw39m39mw but quot5 x Sh it 9 AWN 53 PM 7 Red light from a He Ne laser k observed on a while sheet of paper held 100111 away How far above and below the central axis do he rst dark minima minimum intensity occur When is the 539 1 order bright fringe Answer Mammums Aprmzaz PM A telescope lens with an index of refraction of 155 is to be coated with a Mgquot2 n138 to increase the transmission of yellow light A 550nm What is the minimum thickness of the coating Hint the goal is to minimize re ection to maximize transmission Answer 9961111 Aperaz PM A hum of vertically palmind light is inddcnk an 3 The it with m m e mam What percent of incident light in trauma through all three poluoids Amman I039L39195 if indde light is unpolarized Aprmzaz PM
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