1. Consider the following table.
(a) At room temperature what is the strength of the electric field in a 6-gauge copper wire
(diameter 4.12 mm) that is needed to cause a 4.78-A current to flow?
.006167
V/m
(b) What field would be needed if the wire were m
1. A +3.00-C point charge is moving at a constant 6.20 106 m/s in the +y-direction,
relative to a reference frame. At the instant when the point charge is at the origin of this
reference frame, what is the magnetic-field vector
it produces at the followin
1. A particle with a charge of -2.02 10-8 C is moving with instantaneous velocity v =
(4.19 104 m/s) + (-4.00 104 m/s) .
(a) What is the force exerted on this particle by a magnetic field = (1.40 T) ?
= 0
0
N+ 0
0
N + -33.85
-0.00113
N
(b) What is the for
1. For the circuit shown in the following figure both meters are idealized, the battery has
no appreciable internal resistance, and the ammeter reads 1.11 A.
(Let R1 = 47.0
, R2 = 22.0 , and R3 = R4 = 12 .)
(a) What does the voltmeter read?
199.985
200 V
1. Two small spheres spaced 32.0 cm apart have equal charge. How many excess electrons
mu1st be present on each sphere if the magnitude of the force of repulsion between them
is 1.90 10-21 N?
918.9
2. A very long, straight wire has charge per unit length
1. A silver wire 1.9 mm in diameter transfers a charge of 77 C in 1 h and 10 min. Silver
contains 5.8
1028 free electrons per cubic meter.
(a) What is the current in the wire?
.0183
A
(b) What is the magnitude of the drift velocity of the electrons in the
1. A 44.0-F parallel-plate capacitor is connected to a 3.0-V battery. After the capacitor is
fully charged, the battery is disconnected without loss of any of the charge on the plates.
(a) A voltmeter is connected across the two plates without discharging
1. A point charge q1 = +3.00 C is held stationary at the origin. A second point
charge q2 = -4.80 C moves from the point x= 0.130 m, y = 0 to the
point x = 0.270 m, y = 0.270 m. How much work is done by the electric force on q2?
-.6575 J
2. A small metal
1. The electric field due to an infinite line of charge is perpendicular to the line and has
magnitude E = /20r. Consider an imaginary cylinder with radius r = 0.190 m and
length l = 0.350 m that has an infinite line of positive charge running along its a
1. Excess electrons are placed on a small lead sphere with mass 6.50 g so that its net
charge is -2.20 10-9 C.
(a) Find the number of excess electrons on the sphere.
1.373e10
1.38e+10
(b) How many excess electrons are there per lead atom? The atomic numbe
Experiment 2: Measurement
Wesley Casen Barry
11/21/16
Location: Texas A&M University
Physics 2425 - Fall 2016
Abstract:
The objective of this experiment is to make basic distance, mass, density & time measurements. As well
as making calculations of volume
Experiment 4: Data Collection
Wesley Casen Barry
11/18/16
Location: Texas A&M University
Physics 2425 - Fall 2016
Abstract:
The objective of this lab is to form a hypothesis about the velocity of a ball, then test that velocity by
collecting data on a bal
Experiment 3: Trigonometric Measurements
Wesley Casen Barry
11/17/16
Location: Texas A&M University
Physics 2425 - Fall 2016
Objective:
To review basic trigonometric function and to measure the height of a building using trigonometry.
Experiment:
Material
Experiment 5: Acceleration
Wesley Casen Barry
11/19/16
Location: Texas A&M University
Physics 2425 Fall 2016
Abstract:
The purpose of this experiment is to calculate the acceleration of an object tolling down an inclined
plane. Throughout the experiment I
Experiment 2: Squeeze Rocket Projectiles
In this experiment, you will investigate how the launch angle of a projectile affects the
distance it travels.
Materials
Masking Tape
Mirror Support
Printer Paper
Protractor
4 Squeeze Rockets
1 Squeeze Rocket Bulb
Experiment 1: Distance Traveled by a Projectile
In this experiment, you will use kinematic equations to predict the range of a projectile set in
motion. To do this, you will roll marbles down a ramp and off a table to observe vertical and
horizontal motio
Experiment 4: Density of the Mass Set
In this experiment, you will be become familiar with the mass set.
Materials
Mass Set
10 N Spring Scale
Vernier Caliper
Procedure
1. Use the Vernier caliper to find the height of the 100 g mass (from the mass set).
Re
Title: The Validity and Uncertainty with Obtaining Measurements
Subtitle: Obtaining Data with Instruments
Lab Partner: Jacob Willingham
Date: June 11, 2016
Abstract:
In this investigation, the hypothesis that the 100g mass was composed of steel was examin
Forum 2
Distance
22 cm
12 cm
19 cm
21 cm
14 cm
Trial 1
Trial 2
Trial 3
Trial 4
Trial 5
t^2=2d/g
t= square root of (2d/g)
Trial 1: t= square root of (22 cm/9.8 m/s^2)
t= square root of (0.22 m/9.8 m/s^2)
t= square root of (0.02245 s^2)
t= 0.15 s
Trial 2: t