1036 x9~
Physics 103 Exam 2 October 31, 2002
Name 39,5. W ID #
Section # TA Name
Fill in your name, student ID # (not your social security #), and section # (under ABC of
special codes) on the Scantron sheet. Fill in the letters given for the rst 5 questi
ELECTRIC ENERGY, POTENTIAL, AND CAPACITORS
16
CONCEPTUAL QUESTIONS
1.
SOLVE Were given three negative charges. The total electrical potential energy is the sum of the potential
energy between each pair of charges. We consider the formula to calculate elec
Edwina AbouHaidar
Stephanie Rahme
201101797
Modern Physics lab
Instructor: Jessy Haddad
Experiment 3: Resistance and Resistivity
25 march 2013
Part I: A study of ohmic devices:
Calculate the experimental value of resistance along with its root-mean-square
Chapter 4
The Laws of Motion
Quick Quizzes
1. (a) True. Motion requires no force. Newton's first law says an object in motion continues to move by itself in the absence of external forces. (b) False. It is possible for forces to act on an object with no r
Chapter 5
Energy
Quick Quizzes
1. (c). The work done by the force is W = F ( x ) cos , where is the angle between the direction of the force and the direction of the displacement (positive x-direction). Thus, the work has its largest positive value in (c)
Chapter 3
Vectors and Two-Dimensional Motion
Quick Quizzes
1. (c). The largest possible magnitude of the resultant occurs when the two vectors are in the same direction. In this case, the magnitude of the resultant is the sum of the magnitudes of A and B
Chapter 2
Motion in One Dimension
Quick Quizzes
1. 2. (a) 200 yd (b) 0 (c) 0
(a) False. The car may be slowing down, so that the direction of its acceleration is opposite the direction of its velocity. (b) True. If the velocity is in the direction chosen
Chapter 1
Introduction
Answers to Even Numbered Conceptual Questions
2. 4. Atomic clocks are based on the electromagnetic waves that atoms emit. Also, pulsars are highly regular astronomical clocks. (a) (b) (c) 6.
~ 0.5 lb 0.25 kg or ~10 -1 kg ~ 4 lb 2 kg
Chapter 8 Problems 1, 2, 3 = straightforward, intermediate, challenging = full solution available in Student Solutions Manual/Study Guide = coached solution with hints available at www.cp7e.com = biomedical application Section 8.1 Torque
about (a) an axis
Projectile motion
1. For what launching angle would you expect a maximum range? Explain.
We expect the max range for = 45 because range s= (vo2/g) sin2. Consequently, for
constant vo (and g is already a constant), the range is max when sin2 is max and equ
Motion on a Frictionless Incline
Measuring the acceleration:
Mass of Cart=501.69 g + 0.01 = 0.50169 kg + 0.00001
Inclination 1=8.00
Inclination 2=8.92
Inclination 3=10.9
h= 25.10 cm = 0.2510 m
h= 27.91 cm = 0.2791 m
h= 34.08 cm = 0.3408 m
z = 180.40 cm =
Friction
A-Rough Surface:
mass 1= 627.32g 0.01g
fStatic = 2.1N
s= 0.34
fKinetic = 1.9N
k= 0.31
mass 2=1126.95g 0.01g
fStatic = 2.8N
s= 0.25
fKinetic = 2.6N
k= 0.24
Find the average value of static and kinetic coefficient friction along with their rms erro