University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Lab Quiz 6 Spherical Systems
Solution to Lab Quiz Problem 6.1(Flux Through Hoop Normal Perpendicular)
Problem: A hula hoop of radius 1.0m is in a uniform electric eld with magnitude 1.0 102 N . Its normal is C perpendicular to the eld (carefu
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Homework 3 Beginning Electric Fields
Solution to Homework Problem 3.1(Electric Force Between a Van de Graa and a Pith Ball)
Problem: The Van de Graa develops a charge of 1 105 C and a pith ball has charge of 1 109 C. Which of the following de
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Homework 9 Computing Potential Dierence
Solution to Homework Problem 9.1(Gauss Law for Parallel Planes)
Problem: Two innite parallel planes of xed charge 2 and 3 are held a distance d apart as shown below. A neutral conducting slab of thickne
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Homework 2 Simple Electric Devices and Processes
Solution to Homework Problem 2.1(Determine the Sign of Charge Induced on Conducting Spheres in Contact)
Problem: If you bring a negatively charged insulating rod near two neutral metallic spher
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Homework 5 Gauss Law
Solution to Homework Problem 5.1(Electric Flux out of Room)
Problem: A golf tube has total charge 0.1C. Compute the total electric ux out of the lab room containing the charged golf tube and no other net charge. Select On
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Homework 23 Optical Systems
Solution to Homework Problem 23.1(How long to accelerate to light speed?)
Problem: A problem you should have easily been able to do in UPI, but I get asked it all the time when I ask for a good question on electric
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Homework 1 Electric Charge and Introduction to Devices
Solution to Homework Problem 1.1(The Law of Conservation of Charge)
Problem: Select the response below that most precisely states the Law of Conservation of Charge. Select One of the Foll
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Homework 4 Adding Electric Fields and Field Maps
Solution to Homework Problem 4.1(Identifying Dipole Fields)
Problem: Given the eld map to the right, the dashed box contains all the charge generating the eld. Is the long range eld that of a m
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Homework 22 Optical Elements
Solution to Homework Problem 22.1(Describe Image from Magnication)
Problem: An image has magnication 0.5. Which of the following describes the image? Select One of the Following: (a) enlarged, upright. (b) enlarge
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Lab Quiz 14 Resistance Network
Solution to Lab Quiz Problem 14.1(Why Kirchhos Loop Equation True?)
Problem: Which of the following laws or principles is true primarily because the total work done on an electric charge around any closed path i
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Lab Quiz 18 Adding Magnetic Fields
Solution to Lab Quiz Problem 18.1(RHR example)
Problem: You draw a coordinate system with + pointx ing to the right of the page and + pointing into the page. y In what direction is + for a righthanded coord
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Lab Quiz 26 Optical Elements
Solution to Lab Quiz Problem 26.1(Wavelength of Orange Laser)
Problem: Orange light with wavelength 600nm in vacuum is incident on a material with index of refraction 50. Calculate the velocity and frequency of th
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Lab Quiz 3 Electric Force and Devices
Solution to Lab Quiz Problem 3.1(Static Cling)
Problem: Sometimes when clothes are taken out of a dryer they stick together. Select the following response that best explains why. Select One of the Followi
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Lab Quiz 19 Force and Torque
Solution to Lab Quiz Problem 19.1(Wire Floating in Magnetic Field)
Problem: A long wire carries Ilw = 2.0 103A down the x axis. A wire segment of length 20.0cm with mass 100.0g = 0.1000kg carrying Isw = 100.0A in
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Lab Quiz 7 Parallel Plane Checkup
Solution to Lab Quiz Problem 7.1(Compute Electric Field for Parallel Planes of Fixed Charge)
Problem: An innite plane of charge with uniform charge density 1 = 1C/m2 occupies the y z plane through the origin.
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Lab Quiz 10 Conductors and Dielectrics Quiz
Solution to Lab Quiz Problem 10.1(Compute Bound Charge of Plexiglass)
Problem: A piece of plexiglass ( = 3.2) is placed above an innite plane of charge with charge density = 0.1 C . Compute the boun
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Lab Quiz 2 Electric Charge
Solution to Lab Quiz Problem 2.1(Comparing the Relative Charges of Individual Electrons)
Problem: You are given a bunch of electrons. Electrons have charge e, but what does this mean? Select One of the Following: (a
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Lab Quiz 4 Electric Field Checkup
Solution to Lab Quiz Problem 4.1(Total Charge From Field Map)
Problem: The eld map below is drawn using four lines per Q. What is the total charge (including sign) of the system? Select One of the Following:
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Lab Quiz 5 Reasoning with Gauss Law
Solution to Lab Quiz Problem 5.1(Dene Electric Force)
Problem: Select the one of following that is a denition of electric force. Select One of the Following: (a) The work per unit distance of a charged obje
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Homework 13 RC and Review for Exam 2 (Required but not Collected)
Solution to Homework Problem 13.1(Time Dependence of Decaying Exponential)
Problem: Given the plot below of the voltage across a resistor through which a capacitor is dischargi
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Lab Quiz 21 Inductance
Solution to Lab Quiz Problem 21.1(Current Needed to Double the Energy Stored by an Inductor)
Problem: When a current I ows through a given inductor, the inductor can store an energy U . For the same inductor to store an
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Lab Quiz 22 RL Circuits
Solution to Lab Quiz Problem 22.1(Eect of a Loop on Another Loop)
Problem: Loops 1 and 2 are parallel. Immediately after the switch is closed, what happens to loop 2? Select One of the Following: (a) Loop 2 is not aect
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Homework 17 Faradays Law
Solution to Homework Problem 17.1(Trajectory of Particle in Magnetic Field)
Problem: A proton has velocity 3 107 m in the direction drawn s when it passes through point P . The magnetic eld has strength 3T. The proton
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Homework 16 Magnetic Force and Field
Solution to Homework Problem 16.1(Interaction of Point Charges)
Problem: A proton with charge (+e) is xed at the origin. An electron with charge (e) is xed at the point (1cm, 0, 0). What is the direction o
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Homework 15 Adding Magnetic Fields
Solution to Homework Problem 15.1(The Magnetic Field Direction Due to Two CurrentCarrying Wires at a Given Point)
Problem: The gure shows two currentcarrying wires, one current pointing out of the page and
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Homework 14 Introduction to Magnetic Fields
Solution to Homework Problem 14.1(Magnetic Field of Pith Ball)
Problem: A pith ball is charged with an electrophorus to 1nC and shot along the xaxis at 100 m in the +x s direction. What is the magn
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Homework 12 Kirchhos Laws
Solution to Homework Problem 12.1(Reduce Resistance Network)
Problem: For the circuit to the right, with R1 = 5.0, R2 = 10.0, and R3 = 15, and V0 = 6.0V. What is the current owing through R3 ? Select One of the Follo
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Homework 11 Beginning Circuits
Solution to Homework Problem 11.1(What is the same in parallel?)
Problem: For a parallel combination of unlike resistors, which of the following is the same for each resistor? Select One of the Following: (a) Cu
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Homework 10 Computing with Capacitance
Solution to Homework Problem 10.1(Energy of Charged Sphere as Radius is Changed)
Problem: How does the energy of a uniformly charged spherical shell change as the radius of the sphere is increased withou
University of Arkansas Community College at Batesville
upii2
PHYS 2469

Spring 2010
Solution for Homework 8 Computing the Fields of Conductors and Dielectrics
Solution to Homework Problem 8.1(Charge Density on Hubcap)
Problem: A metal hubcap (a conducting metal disk) lays at on the ground. The earth produces an electric eld of E = 150 N