Work sheet 3  Chp 2  Freely Falling Objects  PHY 251
1. A baseball is hit so that it travels straight upward after being struck by the bat. A fan observes
that it takes 3.00 s for the ball to reach its maximum height.
(a) Find the ball's initial veloci
PHY 251
Work Sheet 1  Chp 2  Position, velocity and Acceleration
1. The position of a particle moving along the x axis is given by x = (21 + 22t  6.0t 2)m, where t is in
s. What is the average velocity during the time interval t = 1.0 s to t = 3.0 s?
2
Equations (Test 1)
PHY 251
Displacement
1D motion
MultiD motion
x x f xi
r rf ri
v
Average velocity
Volume of sphere = r 3
t f ti
vf vi
a
t f ti
dx
dt
dr
v
dt
t f ti
v f vi
Instantaneous velocity
vx
Instantaneous acceleration
dv
d 2x
ax x 2
dt
dt
PHY 251
Worksheet 2  Chp 2  1D Kinematic equations
1. A particle confined to motion along the x axis moves with constant acceleration from x = 2.0 m
to x = 8.0 m during a 2.5s time interval. The velocity of the particle at x = 8.0 m is 2.8 m/s.
What is
Work Sheet  Chp 4  Projectile  PHY 251
1. In a local bar, a customer slides an empty beer mug down the counter for a refill. The height of
the counter is 1.22 m. The mug slides off the counter and strikes the floor 1.40 m from the
base of the counter.
Work Sheet  Chp 1  Dimensions  PHY 151
Dimension
Unit
Area of a rectangle A = lw
Area of a circle A = r2
Volume of a cube A = lwh
Volume of a sphere A = (4/3) r3
Speed v = x/t
Acceleration a = v/t
Density = m/V
Kinetic energy KE = (1/2)mv2
Potential en
Work Sheet 1  Chp 3  Vectors
1. A force F1 of magnitude 6.00 units acts at the origin in a direction 30.0
above the positive x axis. A second force F2 of magnitude 5.00 units
acts at the origin in the direction of the positive y axis. Show graphically
t
Sample Problem Rubric:
(8 pts.) A 0.80kg object tied to the end of a 2.0 m string swings as a pendulum.
At the lowest point of its swing, the object has a kinetic energy of 10 J. Determine
the speed of the object at the instant when the string makes an a
Wake Technical Community College
Mathematics and Sciences Division
Mathematics and Physics Dept.
Spring 2017
Course Syllabus
PHY 251 section(s) 4130,4140 General Physics I
Lecture = 3 hours Lab = 3 hours Total Credits = 4
Description
This course uses calc
PART A
1. Around 18.1 percentage of U.S. adults are estimated to have mental disorder in a given
year.
2. 18.5 percent of U.S. adults are estimated to have a serious mental disorder in given year.
3. 26.2 percentage of U.S. adults are estimated to have me
WorkEnergy Part 2
Springs
Spring can be used to apply forces
Springs can store energy
These can be done by either compression,
stretching, or torsion.
Springs
Ideal, or linear springs follow a rule called:
Hookes Law:
Fs =  k x
k is called the spring c
~
Quiz 5  Chp 5, 6 Laws of Motion & Circular Motion
sJ2
1. A 15.
block rests on a horizontal floor.
(a) What force does the floor exert on the block?
N .
151.9
/@J ~@)
(b) A rope is tied to the block and is run vertically over a pulley. The other end i
PHY 252 TEST 2 Formulary
C
Q
V
C eq C1 C 2 C 3 .
A
0
d
C plates
C cylinder
C spherical
I
J
I avg
S
V I R
V Ir
R
A
IR Ir
I 0 or ( I in I out )
junction
1
uE 0 E 2
2
V 0
1
r
r
J E
P I V I
2
V
R
RC
p
1012
nano
n
109
micro

106
mega

M
106
giga
PHY 252 TEST 3 Formulary
A B AB sin
Fr ma r
I
B 0
4
mv 2
r
v r
dl r
r2
Blong wire
Bloop
0 4 10 7 T m/A
B B dA
S
S
R
E
B
t /
e t / I i e t /
L
R
Btoroid
Bloop
0 Ia 2
2 a 2 x 2
3/ 2
(at x 0)
0 NI
2 r
N
I 0 nI
I I
FB
0 1 2
2 d
NAB sin t
d
 Spherical and Cylindrical Capacitors
1. Consider a spherical capacitor with two concentric conducting spherical shells carrying equal
and opposite charges (Q and Q) as shown in the figure. Assume that the charges are distributed
uniformly.
(a) Use Gauss
FINAL EXAM EQUATION SHEET
Particle
Coulombs law and Electric Field
F12
k e
q1 q 2
12
r
r2
F
E
q0
E k e
q
r 2
Electric Potential and Potential Energy
r
dq
E dE k e 2 r
r
F qE
F
V
A
Gauss Law
V k e
q
r
q
E E dA in
0
S
U ke
q1q2
r12
E E A EA cos for c
Extra problems from Ch. 28
i n
I. What is the magnitude 0 .the potential difference across the 209 resistor? r (J
' m
23" QM Eimv l
" 30; lb! c. 11 v
"/ b d. 5.0V
, RPgJLb Q23JL e. 8.6V
RFme 3:13;: / R : \0+\U'HO~3WL nL+\ _ 5(2) 4_ Q $241.
#1 9'
Phy 252 Test 1 Equation Sheet
Coulombs law and Electric Field
F12
k e
Particle
q1 q 2
12
r
r2
F
E
q0
E k e
q
r 2
F
V
V VB V A E dl
B
U
q0
A
V Er
ma
U qV
Gauss Law
V k e
q
r
q
E E dA in
0
S
U ke
q1q2
r12
E E A EA cos for constant E
ke
k e 8.99 1
AC Circuits
PHY 252 LAST FORMULARY
Lorentz Equation
I rms
max sin t
F qE qv B
I max
2
rms
max
2
Plane Wave Solution (q = 0, I = 0)
E E max cos(kx t )
B Bmax cos(kx t )
I d 0
d E
dt
Where
k
Maxwells Equations
c
q
E
dA
0
B dA 0
I L I max sin( t /
Study Guide for Test 1 (PHY 252)
1. Can you calculate the net force acting on a charge from a system of charges using Coulombs
Law?
2. Can you calculate the electric field at a point due to a point charge, system of charges, and due
to continuous distribu
PHY 151
1.
Why was the system mass kept constant throughout the experiment?
The system mass was kept constant because it demonstrates Newtons Second Law, which involves system mass, net
force, and acceleration. The experiment tested both net force and acc
r r
Amperes Law
Bgdl
0 I c
c
I
Problem 1: Magnetic Field of a Cylindrical Shell
We now apply this strategy to the following problem. Consider the
a
cylindrical conductor with a hollow center and copper walls of thickness
b
b a as shown. The radii of the
Physics 252 TESTZ Fall 2015
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l Circle answers on wor she
PH Y 252 Test 1 Fall 2015 Name: K38 I
Show your work on he paper provided in a manner easy to follow. Write equations, provide drawings
where appropriate. ircle your final answers on your worksheets. Make sure to include units with your
final answer. Do n