Basic Physics II Evidences - DrJJ - UiTM

More documents

Recommendations

Info

Samples of conceptual and analytical/numerical questions from chap19, C&J, 7E___________________________________________________________________________59. The potential difference between the plates of a capacitor is 175 V. Midway between theplates, a proton and an electron are released. The electron is released from rest. The proton isprojected perpendicularly toward the negative plate with an initial speed. The proton strikesthe negative plate at the same instant that the electron strikes the positive plate. Ignore theattraction between the two particles, and find the initial speed of the proton.59. REASONING If we assume that the motion of the proton and the electron is horizontalin the +x direction, the motion of the proton is determined by Equation 2.8,x 1 2= vt 0+ at p, where x is the distance traveled by the proton, v0is its initial speed, andp2a is its acceleration. If the distance between the capacitor places is d, then this relationbecomes1 12 0 2 pd = v t + a t , or20 p2d = 2v t+ a t(1)We can solve Equation (1) for the initial speed v 0of the proton, but, first, we mustdetermine the time t and the acceleration apof the proton . Since the proton strikes thenegative plate at the same instant the electron strikes the positive plate, we can use themotion of the electron to determine the time t.For the electron,1 12d 2 e2= a t , where we have taken into account the fact that the electronis released from rest. Solving this expression for t we have t = d/ae. Substitutingthis expression into Equation (1), we haved ⎛ap⎞d = 2 v0+⎜ da ⎜ea ⎟⎝ e ⎠(2)The accelerations can be found by noting that the magnitudes of the forces on theelectron and proton are equal, since these particles have the same magnitude of charge.The force on the electron is F = eE = eV / d , and the acceleration of the electron is,therefore,Newton's second law requires that mae e= map p, so thatae= F eVm= m d(3)aapeepeme= (4)mCombining Equations (2), (3) and (4) leads to the following expression for v 0, the initialspeed of the proton:Compiled by <strong>DrJJ</strong> Page 8 of 9 8/17/2006
Samples of conceptual and analytical/numerical questions from chap19, C&J, 7Ev0=1 ⎛ m1–2 ⎜ m⎝ep⎞⎟⎠eVmeSOLUTION Substituting values into the expression above, we find–31 –191 ⎛ 9.11× 10 kg ⎞ (1.60×10 C)(175 V)6v0 = 1– 2.77 10 m/s2 ⎜–27 = ×–311.67 10 kg ⎟⎝ × ⎠ 9.11×10 kg___________________________________________________________________________Compiled by <strong>DrJJ</strong> Page 9 of 9 8/17/2006
Page 1 and 2:
Evidences for ClassroomInnovations,
Page 3 and 4:
website&syllabus
Page 5 and 6:
Dr JJ or Dr Jaafar Jantan Homepageh
Page 7 and 8:
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
UNIVERSITI TEKNOLOGI MARACOURSE INF
Page 15 and 16:
PHET simulationi. “Electric Field
Page 17 and 18:
Assessment : Continuous Assessment
Page 19 and 20:
COURSE OUTCOMESLO1PO1LO2PO2LO2PO3PR
Page 21 and 22: lesson learning outcomes
Page 23 and 24: TOPIC LEARNING OUTCOMES REMARKS HOU
Page 33 and 34: iLearn - SuFO - Analysis Report ::
Page 39 and 40: AAN 2010 (Pengajaran) nomination. D
Page 43 and 44: http://drjj.uitm.edu.myAnugerah Aka
Page 47 and 48: CONFIDENTIAL2AS/APR 2008/PHY407PART
Page 49 and 50: CONFIDENTIAL4AS/APR 2008/PHY407R 1
Page 51 and 52: CONFIDENTIAL6AS/APR 2008/PHY407qv0
Page 53 and 54: CONFIDENTIAL8AS/APR 2008/PHY407PART
Page 55 and 56: CONFIDENTIAL10AS/APR 2008/PHY407Ekq
Page 57 and 58: CONFIDENTIAL12AS/APR 2008/PHY407c)
Page 59 and 60: Physics PHY407 Page 2 of 2 Semester
Page 61 and 62: Test 2- key PHY407 BASIC PHYSICS II
Page 63 and 64: Test 2- key PHY407 BASIC PHYSICS II
Page 65 and 66: Samples of conceptual and analytica
Page 71: Samples of conceptual and analytica
Page 75 and 76: AS 230TOTAL MARKS AND GRADES FOR PH
Page 77 and 78: phet simulations, lab activities&le
Page 79 and 80: 22/01/2011 New Sims - PhET Simulati
Page 81 and 82: Material SciencePHY407Pre-lab activ
Page 83 and 84: Material SciencePHY407Activity 1.2
Page 85 and 86: Material SciencePHY407Activity 2.2
Page 87 and 88: Material Science PHY407 Lab #2Inves
Page 89 and 90: Material Science PHY407 Lab #2Draw
Page 91 and 92: Material Science PHY407 Lab #2Quest
Page 93 and 94: Material Science PHY407 Lab #25. Ho
Page 95 and 96: Material Science PHY407 Lab #2Activ
Page 97 and 98: Material Science PHY407 Lab #2Quest
Page 99 and 100: Material Science PHY407 Lab #23Draw
Page 101 and 102: Material Science PHY407 Lab #2Predi
Page 103 and 104: Material SciencePHY407Universiti Te
Page 105 and 106: Material SciencePHY407Repeat the ab
Page 107 and 108: Material SciencePHY4077. What happe
Page 109 and 110: Material SciencePHY4074. Can you pr
Page 111 and 112: GRAVITATIONAL FORCESGalileo Science
Page 113 and 114: 18.1 The Origin of ElectricityCutne
Page 115 and 116: Charges, charging, electrical force
Page 117 and 118: Charging by contactThe pithball is
Page 119 and 120: Charging by contactPithball is pola
Page 121 and 122: Charging by contactThe repulsion is
Page 123 and 124:
Charging by Induction:1. Bring nega
Page 125 and 126:
18.2 Charged Objects and the Electr
Page 127 and 128:
1/22/2011Electricity Lecture Series
Page 129 and 130:
1/22/2011Charge ConservationAqBqC3q
Page 131 and 132:
1/22/2011PHY407Lecture 2:Electrical
Page 133 and 134:
1/22/2011PHY407Lecture 2: Introduct
Page 135 and 136:
1/22/2011Activity 2-Resultant Force
Page 137:
concept maps&formative tasks
Page 150 and 151:
Which the following graphs correctl
Page 152 and 153:
29. Which of the figures in Figure
Page 154 and 155:
26. Figure 18 shows a wire with a l
Page 156 and 157:
21. What happens to a positive char
Page 158 and 159:
Inventori Konsep Elektrik dan Kemag
Page 160 and 161:
PercentageCSEM (98
Page 162 and 163:
PercentageComparing the CSEM scores
Page 164 and 165:
PercentageCSEM (16
Page 166 and 167:
PercentageComparing the CSEM scores
show all

Basic Physics II Evidences - DrJJ - UiTM

Create successful ePaper yourself

Delete template?

Save as template?