St. Johns University
Physics Lab
Wednesday 8:30-10:00
Experiment 2: Measurement of Density
Purpose Statement: The purpose of this lab was to make careful measurements of the length,
width, height and mass of objects and then, using that data, determine th
St. Johns University
Physics Lab
Wednesday 8:30-10:00
1. 1.Answer the following: if F1 was acting at 45o (instead of 0O) and F2 at 135o (instead of
90o), would either the angle or the magnitude, or both, of their sums change? Can you
answer this question
B = (4x10-7Tm/A)(4.45A)/(2(.445m) = 2x10-6 T
F/L=0*I*I'/2r=(4.0x107)(2.85A)(2.85A)/(2)(0.055m)=2.9536363636364x10 5N/m
A)
(4.0x107)(1.08A)/(2)(0.001m)=2.16x104T=216T
B)
-2.88 A + 1.08 A = -1.8 A
(4.0x107)(1.8A)/(2)(3x103m)=1.2x104T=120T
(1x10-4)(.39m)/(4x
Unit 7 AC Circuits and Electromagnetic
Waves
(ch 33, 34)
output from the voltage source is
constant.
+
Direct Current (DC) Circuits:
i
R
Alternating Current (AC)
Circuits: output from the voltage
source is sinusoidal.
V
V V0 sin t V0 sin 2ft
V
V: the in
Unit 5 Magnetic Field & Amperes
Law
(ch 29, 30)
Magnetic field exerts forces on moving
charges or currents.
Magnetic field is a vector quantity
r
It is symbolized by B
The vector represents both the direction
and magnitude properties of the field.
1T
0G
N
3.5/20 = .175
.175 x -.69314718055994 = .12130075659799 s
-.175 x -2.302585092994 = .40295239127395 s
4x10-7 x 662 x x (6x10-3)2 x .782 / 2(.08) = 2.3540697752009 x 10-6 J
120x10-3/1.15 = .10434782608696 H = 104.34782608696 mH
f=1/(2LC),f=6.04*10^6Hz,L=1.
currentdensity=conductivity*fieldstrength
conductivity=currentdensity/fieldstrength=7.5x10 13/126=5.95238095x1015
(a)R=(11.8)2/26=5.355384615
(b) r (internal resistance) = (15-11.8)x(5.355384615)/11.8 = 1.452307692
Top Middle, Middle Middle, and Bottom Mi
Experiment 3
Experiment 3: Equilibrium of Concurrent Forces
Purpose
(1) To become familiar with vectors, their components, their addition and subtraction.
(2) To study the equilibrium of coplanar forces intersecting at a point.
Apparatus
Force-Table, slot
Experiment 8
Experiment 8: Ballistic Pendulum and
Projectile Motion
Purpose
This experiment investigates conservation of energy and momentum as it applies to the
ballistic pendulum. Using these principles, you will measure the speed of a horizontally fire
Experiment 19
Experiment 19: Diffraction Grating Spectroscope
Purpose
(1) To observe spectra.
(2) To measure wavelengths in line spectra.
Apparatus
(a) a diffraction grating spectroscope; a mercury lamp; a desk lamp
(b) on the side: 4-5 helium gas tubes w
Experiment 10
Experiment 10: Calorimetry
Purpose
(1) To study heat transfer processes, including those involving phase changes.
(2) To measure the heat of fusion of water (latent heat).
Apparatus
calorimeter; dial balance; a beaker with some water at room
Experiment 4
Experiment 4: Measuring g with an Air Track
Purpose
(1) To observe motion with negligible friction
(2) To measure the acceleration of gravity g
Apparatus
Air track, glider, metal block, ruler, dial calipers, tape measure, recording tape, mask
Experiment 6
Experiment 6: Collisions on an Air-Track
Purpose
(1) To study the Principles of Conservation of Momentum and Conservation of Kinetic
Energy.
Apparatus
Air-track with sparker and supplies (recording tape, sticking tape,
wooden sticks, etc.) Eq
Experiment 1: Converting Units of Measurement
and Other Calculations
Purpose
This laboratory will give you practice (1) converting between physical units and
(2) calculating averages and average deviations.
Procedure Part I
Express the quantities quoted b
University Physics I PHY 1930 Final Exam Overview
Fall 2015
1. General Information
The final exam will be given from 9:05 am to 11:05 am on Friday, December 18 in the
regular classroom. Try to arrive early as I will begin distributing exams a few
minutes
Experiment 23
Experiment 23: Wheatstone Bridge and
Resistivity of Metals
Purpose
(1) To study the use of Wheatstone Bridge for precise measurements of resistances.
(2) To determine the resistivity of a metal.
Apparatus
(a) a slide wire, a galvanometer wit
September 2016
Experiment 6U: Conservation of Momentum in
Explosions and in Inelastic Collisions
Purpose
The purpose of this experiment is to:
a) demonstrate conservation of momentum with two carts of varying masses pushing away
from each other from rest
Experiment 31
Experiment 31: Magnetic Force
Purpose
(1) To study the relationship between magnetic force and the magnitude of the current in the
wire, length of the wire, and strength of the magnetic field that the wire is in.
(2) To find the magnetic fie
Experiment 27
Experiment 27: AC Circuits II: LR & LCR Circuits
Purpose
(1) To study the properties of an AC circuit containing a resistor and an inductor (coil).
(2) To observe the basic properties of a series LCR circuit.
(3) To observe resonance in an L
Dr. Appel
St. Albert Hall B34 718-990-6393
e-mail: [email protected]
PHYSICS LABORATORY
Required
Read physics lab instructions:
http:/facpub.stjohns.edu/facpub-physics/General%20Physics%20Lab%20Manual.htm
Please read and give a signed copy to me: Safety
ECS203: Basic Electrical Engineering
January Semester 2016
Dr. Waree Kongprawechnon
Handout A4: Circuit Theorems
1
Linearity Property
Linearity is the property of an element describing a linear relationship between
cause and effect.
This property is the
ECS203: Basic Electrical Engineering
January Semester 2016
Dr. Waree Kongprawechnon
Handout A1: Basic Concepts
1
Introduction
In electrical engineering, we interest in communicating or transferring energy from
one point to another. To do this requires an
ECS203: Basic Electrical Engineering
January Semester 2016
Dr. Waree Kongprawechnon
Handout A3: Method of Analysis
1
Nodal Analysis
Nodal analysis, also known as the node-voltage method provides a general procedure for
analyzing circuits using node voltag
ECS203: Basic Electrical Engineering
January Semester 2016
Dr. Waree Kongprawechnon
Handout A5: Operational Amplifiers
1
Operational Amplifier
An operational amplifier or op amp is an electronic unit that is an electronic unit
that consisting of a comple
ECS203: Basic Electrical Engineering
January Semester 2016
Dr. Waree Kongprawechnon
Handout A2: Basic Laws
1
Ohms Law
Materials in general have a characteristic behavior of resisting the flow of electric
charge. This is known as resistance and is represe
ECS203: Basic Electrical Engineering
January Semester 2016
Dr. Waree Kongprawechnon
Handout A8: Sinusoids and Phasors
1
Sinusoids
In this class, we begin analysis of circuits in which the source voltage or current is
sinusoidally time-varying function. A