The Eye Near and Far Points
The near point is the closest distance for which the lens can
accommodate to focus light on the retina.
Typically at age 10, this is about 18 cm
The average value is about
General Univ: Physics ll.
Blue Test One (odd sections).
Name: SQLMTIQN g
Signature:
ID No:
Section No:
Answer all problems and questions. On problems show all working
out. You have fty minutes.
1 + tr
1)
A 0.230 amp current is charging a capacitor that has circular plates with a radius of 12.2 cm. The plate separation is 4.00
mm.
a) What is the time rate of increase of the electric field between th
(a) If we ignore friction, find the steady-state angular velocity to hold the slider in place.
(b) Add friction. Determine the mixmum angular velocity to of the 10lb spinning loop so that the 2-1b
sli
Chapter 23
Electric Fields
Todays Class
We will cover properties of electric charge
(23.1)
We will also cover Charging Objects by
Induction (23.2)
We will discuss the difference between a
conductor, s
Applying Gausss Law
To
use Gausss law, you want to choose a
gaussian surface over which the surface
integral can be simplified and the electric field
determined
Take advantage of symmetry
Remember,
Chapter 24
Gausss Law
Lets return to the field lines and
consider the flux through a surface.
The
number of lines per unit area is
proportional to the magnitude of the electric
field.
Remember this
q
Principal Investigator- Lenny Harrison
Researcher- Jesse Vaught
Data Analyst John Cano
Lab #5: Springs
Researcher by: Jesse Vaught
Part 1:
In order to achieve our desired results, our group first setu
Principal Investigator- Lenny Harrison
Researcher- Jesse Vaught
Data Analyst Jonathan Cano
Lab #2: Acceleration due to Friction
Analysis- Jonathan Cano
Figure 1- Our measurements
Figure 2- Fast and sl
PHY241-009 Group 8
Principal Investigator-Jonathan Cano
Researcher-Lenny Harrison
Data Analyst-Jesse Vaught
Lab #3: Acceleration on an Inclined Track
Principal Investigator-Jonathan Cano
Lab 3 consist
General Univ: Physics ll.
Blue Test One (odd sections).
Name:
Signature:
ID No:
Section No:
Answer all problems and questions. On problems show all working
out. You have fty minutes.
1 + true/false 18
PHY241-009 Group 8
Principal Investigator-Jonathan Cano
Researcher-Lenny Harrison
Data Analyst-Jesse Vaught
Lab #3: Acceleration on an Inclined Track
Principal Investigator-Jonathan Cano
Lab 3 consist
PHY241-009 Group 8
Principal Investigator-Lenny Harrison
Researcher-Jesse Vaught
Data Analyst-John Cano
Lab #2: Acceleration due to Friction
Principal Investigation by: Lenny Harrison
Lab 2 consists o
Pre Lab #3
Incline Track
Jesse Vaught- Group 8
1. Read lab 3
2. To calculate the angle opposite of the height, you simply take the sin function
of height over the hypotenuse l. Angle theta is equal to
Principal Investigator- Lenny Harrison
Researcher- John Cano
Data Analyst- Jesse Vaught
Lab 3: Acceleration on an Incline Track
Data Analysis by: Jesse Vaught
Figure 1- The data above represents the h
Pre Lab #3
Incline Track
Jesse Vaught- Group 8
1. Read lab 3
2. To calculate the angle opposite of the height, you simply take the sin function
of height over the hypotenuse l. Angle thet
PHY241-009 Group 8
Principal Investigator-Lenny Harrison
Researcher-Jesse Vaught
Data Analyst-John Cano
Lab #2: Acceleration due to Friction
Principal Investigation by: Lenny Harrison
Pre Lab 5
Jesse Vaught
Physics Lab 1 Section 009
Group 8
1. m1g = -k(L1-L0)
2.
3. Judging by the graph it takes the object 10 seconds to complete a full bounce,
therefore the period of the wave or bou
Electric Field Introduction
The
electric force is a field force
Field forces can act through space
The effect is produced even with no physical
contact between objects
Faraday
developed the concept
Chapter 34
Electromagnetic Waves
Electromagnetic Waves
Mechanical waves require the presence of a medium.
Electromagnetic waves can propagate through empty space.
Maxwells equations form the theore
Chapter 33
Alternating Current Circuits
Alternating Current Circuits
Electrical appliances in the house use alternating current (AC) circuits.
If an AC source applies an alternating voltage to a serie
Chapter 36
Image Formation
Image of Formation
Images can result when light rays encounter flat or curved surfaces between two
media.
Images can be formed either by reflection or refraction due to thes
Faradays Law of Induction Statements
The emf induced in a circuit is directly proportional to
the time rate of change of the magnetic flux through the
circuit.
d B
=
Mathematically,
dt
Remember B is
F =qv B
Force on a Charged Particle in a
Magnetic Field
Consider a particle
moving in an external
magnetic field so that its
velocity is perpendicular
to the field.
The force is always
directed toward
Chapter 27Electric Currents
Electric Current
Ohms Law
Resistivity
Electric Power
Superconductivity
Electric Current
If the net charge Q goes past in the time
interval t, then the average current is
I=
Summary
Electric potential: PE per unit charge, V= PE/q
Potential difference: work done to move the charge
from one point to another,
Vab=Vb-Va= PE/q=-Wab/q or Wab=-qVab
For uniform electric field: Va
Conductors in Electric Field
Why?
Inaconductorelectronsarefreetomove.IfaconductorisplacedintoE,a
forceF=eEactsoneachfreeelectron.Soonelectronswillpileuponthe
surfaceononesideoftheconductor,whilethesur