Uni. Worcester - RPK - 101

My Twelve Years in LASRoaming around the Kathmandu Valley from this school to that school for the job of a school teacher in the month of February 1992, I reached LAS. In fact, my teacher Madhav Dahal, who taught me in my high school for about thre

Uni. Worcester - RPK - 101

Statement of GoalSince my early childhood, I was much interested in natural phenomena like the rainbow formation, the lightning flashes and the thunderstorms, and the pattern of stars in the sky. Interestingly, my father used to tell the time at nig

Uni. Worcester - RPK - 101

August 28, 2008 PH1110A08 (Homework Rules) Conference/Lab Instructor: Rudra Kafle E-mail: rpk101@wpi.edu Web: http:/users.wpi.edu/~rpk101/ Office: OH-114 Telephone: 508-831-5758 Office Hours: Please click on the following link for my office hours. I

Uni. Worcester - RPK - 101

My Teaching ExperienceRudra Prasad Kafle, Department of Physics, WPI, MA 01609, USA1. Worcester Polytechnic Institute, Worcester, Massachusetts, USA (From August 2005 to Date) PHYSICS 1140 (Lecture, Conference and Labs, Term E, 2009) Oscillations

Uni. Worcester - RPK - 101

Physics-1110 [General Physics-Mechanics] TERM-E, 2007 Lecturer: Rudra P. Kafle, Lecture Room: OH 126, Lecture Time: 8:00-9:10 A.M. Textbook: Young and Freedman, University Physics, 11th edition (Addison Wesley, 2004). The schedule of lecture topics i

Uni. Worcester - RPK - 101

Term-E, 2007 (May 21- June 21) Homework Rules! 1. Give all numerical answers in three significant figures. One point is deducted otherwise! 2. Express the angles in degrees only up to one place after the decimal point in your answers. One point is de

Uni. Worcester - RPK - 101

August 28, 2007 PH1110A07 (Homework Rules) Conference/Lab Instructor: Rudra Kafle E-mail: rpk101@wpi.edu Web: http:/users.wpi.edu/~rpk101/ Office: OH-114 Tel. 508-831-5758 Office Hours: I am usually in my office in the week days except at lunch hours

Uni. Worcester - RPK - 101

PH 1110A07 Labs (Newtonian Mechanics) Term A, 2007 Laboratory Rules Lab Instructor: Rudra P Kafle Office: OH-114 E-mail: rpk101@wpi.edu Web: http:/users.wpi.edu/~rpk101/ Office Phone: 508-831-5758 Office Hours: I will be in my office almost all the t

Uni. Worcester - RPK - 101

Uni. Worcester - RPK - 101

Friday, October 26, 2007 PH 1120B07 Labs (Electricity and Magnetism) SYLLABUSLab Instructor: Rudra P Kafle Office: OH-114 E-mail: rpk101@wpi.edu Office Phone: x 5758Office Hours: I am usually in my office except at lunch hours (Noon to 1:00 PM).

Uni. Worcester - RPK - 101

Uni. Worcester - RPK - 101

Uni. Worcester - RPK - 101

Uni. Worcester - RPK - 101

Uni. Worcester - RPK - 101

PH1120D08 (Homework Rules) Conference/Lab Instructor: E-mail: Web: Office: Tel.Sunday, March 09, 2008 Rudra P. Kafle rpk101@wpi.edu http:/users.wpi.edu/~rpk101/ OH-114 508-831-5758Office Hours: I am usually in my office except at lunch hours (Noo

Uni. Worcester - RPK - 101

PH 1120D08 Labs (Electricity and Magnetism)Lab Instructor: Rudra P Kafle Office: OH-114 E-mail: rpk101@wpi.edu Office Phone: x 5758Monday, March 17, 2008Office Hours: I am usually in my office except at lunch hours (Noon to 1:00 PM). Please send

Uni. Worcester - RPK - 101

PH 1110A08 Labs (Newtonian Mechanics)Term A, 2008Laboratory Rules Lab Instructor: Rudra Kafle Office: OH-114 E-mail: rpk101@wpi.edu Web: http:/users.wpi.edu/~rpk101/ Office Phone: 508-831-5758 Office Hours: Please click on the following link for

Uni. Worcester - RPK - 101

Monday, May 15, 2006 Lecture -1 Introduction to the course: This course includes some stuff on basic physics especially in Newtonian Mechanics. You may need some basic concepts of Calculus. Vectors: Please read the Sections: 7, 8 and 9 of Chapter-1.

Uni. Worcester - RPK - 101

Thursday, January 11, 2007 PH1110C07 (Homework Rules!) Conference: Rudra Kafle E-mail: rpk101@wpi.edu Web: http:/users.wpi.edu/~rpk101/ Office: OH-114 Office Hours: I am usually in my office. Welcome at any time! Please send me an email if you have s

Uni. Worcester - RPK - 101

Uni. Worcester - RPK - 101

Uni. Worcester - RPK - 101

Uni. Worcester - RPK - 101

Uni. Worcester - RPK - 101

PH 1120B08 Labs (Electricity and Magnetism)Lab Instructor: Rudra P Kafle Office: OH-114 E-mail: rpk101@wpi.edu Office Phone: x 5758Thursday, Oct 30, 2008Office Hours: Please send me an e-mail if you have any questions or confusion about the labs

Uni. Worcester - RPK - 101

ROUTINE [D-TERM 2009][RUDRA KAFLE] T 8 D M LAB SET-UP Colloquium 9 10 11 12 1 2 3 4TPH-1120 (Conference-3) (OH-126)WPH-1120 (Lab-3) (OH-211)HDGraduate SeminarTHHDFPH-1120 (Conference-3) (OH-126)HDResearch meetingPH-1120 (Lab

Uni. Worcester - RPK - 101

PH1120D09 (Homework Rules) Conference/Lab Instructor: E-mail: Web: Office: Tel.Monday, March 16, 2009 Rudra P. Kafle rpk101@wpi.edu http:/users.wpi.edu/~rpk101/ OH-114 508-831-5758Office Hours: Please send me an e-mail if you have some quick ques

Uni. Worcester - RPK - 101

PH 1120D09 Labs (Electricity and Magnetism)Lab Instructor: Rudra P Kafle Office: OH-114 E-mail: rpk101@wpi.edu Office Phone: x 5758Monday, March 23, 2008Office Hours: Please send me an e-mail if you have some quick questions or confusion in the

Uni. Worcester - RPK - 101

Tuesday, April 07, 2009 Practice problems on capacitors (1) The capacitors in the following combination have capacitances: C1 = 3 pF, C2 = 4 pF and C3 = 5 pF, (1 pF =10-12 F). C1 C2 C3AB(a) What is the equivalent capacitance? - The capacitors a

Uni. Worcester - RPK - 101

Conference: Tuesday, April 14, 2009 A capacitor is charged to 12.0 volts and then it is connected to a voltmeter, RV = 3.40 M. After a time of t = 4.00 s, the voltmeter reads 3.00 volts. C (a) Determine the capacitance of the capacitor. V (t=0) = 12.

Uni. Worcester - RPK - 101

Conference: Thursday, April 16, 20091. A particle of mass, m = 5g has a charge, q = + 55 C and is moving with velocity, = (. /) in a uniform magnetic field, = . as shown in the following figure. (a) Determine the magnitude and the direction

Uni. Worcester - RPK - 101

PHYSICS-1140: Oscillations and Waves Term-E, 2009 (May 26- June 26) Lecturer: Rudra Kafle Lecture Hall: OH-218 Time: 4: 30 P.M - 5: 30 PM Textbook: Young and Freedman, University Physics, 12th Ed. (Addison Wesley, 2007). The schedule of lecture topic

Uni. Worcester - RPK - 101

PHYSICS-1140: Oscillations and Waves Homework Rules!Term-E, 2009 (May 26- June 26)1. Give all numerical answers in THREE SIGNIFICANT FIGURES. One point is deducted otherwise! 2. Express the angles in degrees only up to ONE PLACE after the decimal

Uni. Worcester - RPK - 101

PHYSICS-1140: Oscillations and WavesTerm-E, 2009 (May 26- June 26)LABORATORY INFORMATION AND RULES Lab Instructor : Rudra P. Kafle Office : OH-114 E-mail : rpk101@wpi.edu Web-page: http:/users.wpi.edu/~rpk101/PH1140E09.html Office Phone : 508-831

Uni. Worcester - RPK - 101

Complex numbers and PhasorsP.K.AravindPhysics Department, WPIPrepared for PH 1140 Term D, 2008 (Many slides have notes)Complex number arithmeticz = x + jy where j = -1 x = real part, y = imaginary partLet z1 = x1 + jy1 and z2 = x2 + jy2 Add

Uni. Worcester - RPK - 101

Uni. Worcester - RPK - 101

MECHANICAL-ELECTRICAL ANALOGYMASS-SPRING SYSTEM Displacement x Velocity Diff Eqn:dx =v dt d 2x m 2 + kx = 0 dtLC CIRCUIT Charge q Current Diff Eqn:dq =i dtd 2q 1 L 2 + q=0 dt CMass m Spring constant k Frequency =k mInductance L Inverse

Uni. Worcester - RPK - 101

The damped harmonic oscillatorConsider a mass-spring system with a mass m attached to a spring of constant k . If the mass is displaced from its equilibrium position and released, it will oscillate with the frequency 0 = k / m (note that I have atta

Uni. Worcester - RPK - 101

The forced, damped harmonic oscillatorThe differential equation for a forced, damped oscillator is d 2x dx m 2 + b + kx = F0 cos (t ) dt dt or d 2x dx 2 + + 0 x = f 0 cos (t ) 2 dt dt (1)0 =F k b , = , f0 = 0 m m mAfter the transients have di

Uni. Worcester - RPK - 101

SOUND WAVESSound waves are longitudinal waves in a medium Speed of sound in air at 20C = 344m/s Audible sound: 20Hz 20kHz Sound speed = Frequency x Wavelength: v = f Displacement for a sound wave traveling along the +x direction:2 2 y ( x, t )

Uni. Worcester - RPK - 101

PH1140E2009 : Oscillations and Waves Objectives LECTURE-1( Tuesday, May 26, 2009)After the completion of this lecture, you will be able to 1. describe the oscillations in terms of amplitude, period, frequency, and angular frequency, 2. add two or

Uni. Worcester - RPK - 101

PH1140E09Solutions (Suggested problems-1)May 29, 2009End-of-the-Chapter-Suggested problems 13.3 Number of complete vibrations made by the fork tip, (n) = 440, time (t) = 0.500s,gives the frequency, (f ) = n/t = 880Hz . Therefore, the angular

Uni. Worcester - RPK - 101

PH1140E2009 : Oscillations and Waves Objectives LECTURE-2( Wednesday, May 27, 2009)After completion of this lecture, you will be able to 1. analyze an SHM using energy concepts and 2. analyze the motions of a simple pendulum. We will cover the f

Uni. Worcester - RPK - 101

PH1140E09Solutions (Suggested problems-2)May 29, 2009End-of-the-Chapter-Suggested problems 13.23 The mass of the glider, (m) = 0.500 kg , the force constant of the spring,(k ) = 450 N/m, and amplitude of an SHM, (A) = 0.040 m. Therefore, the

Uni. Worcester - RPK - 101

PH1140E2009 : Oscillations and Waves Objectives After completion of this lecture, you will be able toLECTURE-3(Friday, May 29, 2009)1. relate the induced emf in a circuit to the rate of change current in the same circuit, 2. calculate the energy

Uni. Worcester - RPK - 101

PH1140E09Solutions (Suggested problems-3)June 3, 2009End-of-the-Chapter-Suggested problems 13.56 The mass of an object, (m) = 2.20 kg , the force constant of the spring,(k ) = 250 N/m, and the period of oscillation, (T ) = 0.615 s. (a) The a

Uni. Worcester - RPK - 101

PH1140E2009 : Oscillations and Waves Objectives After completion of this lecture, you will be able toLECTURE-4(Monday, June 01, 2009)1. solve the problems in a forced, damped oscillating mass-spring system and 2. explain the condition for resona

Uni. Worcester - RPK - 101

PH1140E09Solutions (Suggested problems-4)May 29, 2009End-of-the-Chapter-Suggested problems 13.60 The force constant of a forced, damped harmonic oscillator = k and mass =0 0 0 2m. The damping constant, (b) = b1 and amplitude = A1 . The

Uni. Worcester - RPK - 101

PH1140E2009 : Oscillations and Waves Objectives LECTURE-5(Wednesday, June 03, 2009)After completion of this lecture, you will be able to 1. solve the problems in the driven L-C-R circuits, and 2. explain the condition for resonance of an electric

Uni. Worcester - RPK - 101

PH1140E09 Additional problemsSolutions (Suggested problems-5)May 29, 20091. An L-C-R circuit with self-inductance of 0.01 H is described by 0.01 d2 q dq + 10 + 5 105 q = 0.5 cos(5000 t). 2 dt dt (1)To solve this problem, we compare this equa

Uni. Worcester - RPK - 101

PH1140E2009 : Oscillations and Waves Objectives After completion of this lecture, you will be able to 1. describe a mechanical wave, 2. solve problems using wave equation: v = f , andLECTURE-6 (Monday, June 08, 2009)3. describe the waves on a st

Uni. Worcester - RPK - 101

PH1140E09Solutions (Suggested problems-6)May 29, 2009End-of-the-Chapter-Suggested problems 15.6 The given transverse wave equation: y (x, t) = (6.50 mm) cos 2 t x 28.0 cm 0.0360 sA comparison of this equation to the standard transverse wave

Uni. Worcester - RPK - 101

PH1140E2009 : Oscillations and Waves Objectives LECTURE-7 (Wednesday, June 10, 2009)After completion of this lecture, you will be able to 1. calculate the speed of transverse waves on a stretched rope or string, and 2. calculate the energy transp

Uni. Worcester - RPK - 101

PH1140E09Solutions (Suggested problems-7)May 29, 2009End-of-the-Chapter-Suggested problems 15.14 The length of the rope, (l) = 2.50 m and mass of the rope, (m) = 0.120 kg . Thefrequency of a transverse wave to be set up on the string, (f ) =

Uni. Worcester - RPK - 101

PH1140E2009 : Oscillations and Waves Objectives After completion of this lecture, you will be able toLECTURE-8 (Friday, June 12, 2009)1. explain how standing waves are formed on a stretched rope or string, 2. analyze the standing waves on a stri

Uni. Worcester - RPK - 101

PH1140E09Solutions (Suggested problems-8)May 29, 2009End-of-the-Chapter-Suggested problems 15.33 The standing waves on a wire are described by y (x, t) = (ASW sin kx) sin t. The amplitude of the standing wave, (ASW ) = 2.50 mm = 2.50 103 m, t

Uni. Worcester - RPK - 101

PH1140E2009 : Oscillations and Waves Objectives After completion of this lecture, you will be able toLECTURE-9 (Monday, June 15, 2009)1. describe a sound wave in terms particle displacements or pressure uctuations, 2. calculate the speed of soun

Uni. Worcester - RPK - 101

PH1140E09Solutions (Suggested problems-9)May 29, 2009End-of-the-Chapter-Suggested problems 16.3 The displacement amplitude, (A) = 0.02 mm = 2.00 105 m. The adia-batic bulk modulus of air, (B ) = 1.42 105 P a.(a) The frequency of the soun

Uni. Worcester - RPK - 101

PH1140E2009 : Oscillations and Waves Objectives LECTURE-10 (Thursday, June 18, 2009)After completion of this lecture, you will be able to 1. describe the resonance in sound, 2. describe interference of two sound waves, and 3. describe the formati

Uni. Worcester - RPK - 101

PH1140E09Solutions (Suggested problems-10)May 29, 2009End-of-the-Chapter-Suggested problems 16.31 The length of the air column in the test tube, (l) = 14.0 cm = 0.140 m, and thespeed of sound, (v ) = 344 m/s. (a) The test tube acts as a clos

Uni. Worcester - RPK - 101

PH1140E2009 : Oscillations and Waves Objectives After completion of this lecture, you will be able toLECTURE-11 (Monday, June 22, 2009)1. explain why the pitch of sound rises and falls when there is a relative motion between a source and an obse

Uni. Worcester - RPK - 101

PH1140E09Solutions (Suggested problems-11)May 29, 2009End-of-the-Chapter-Suggested problems 16.41 In this problem, the male ornithoid is the source of sound and the female is thelistener. The speed of the male ornithoid, (vS ) = 25.0 m/s. Th