PHY 251 Test 1,2 Formulary
Newtons 2nd
Law
Frictional
Forces
Fnet F ma
f
s s max
N
F
x
Vector scalar
or dot
product
f s max s N
Work
Fradially inward
F
,
y
ma y
,
F
z
0 f s f s max
,
ma z
f s Fappl
PHY 251 Test 3 Formulary
MOMENTS OF INERTIA of HOMOGENEOUS RIGID BODIES
avg angular velocity
f i
t
t f ti
f i
avg angular acceleration
t
t f ti
1 rev =
2
rad = 360
Scalar product
A B AB cos
con
PHY 251 Final Formulary Addendum
r
mm
F12 G 1 2 2 r12
r
where G = 6.673 x 10-11 Nm2 / kg2 and the negative sign indicates an attractive force.
r
r Fg
GM
The gravitational field: g
2 r
r
m
U
Gravitat
Two positive charges are
equal. Which has more electric
potential energy?
A. Charge A.
B. Charge B.
C. They have the same potential energy.
D. Both have zero potential energy. Two positive charges a
Quiz 2 ,1
Physics 252 Name: Kit: Z .
l. Ifa = 60.0 cm, I) = 80.0 cm, Q = + 6.00 nC, and q = 6.00 nC in the figure, what is the
electric field (magnitude and direction) at point P? [Draw the B field ve
SHOW ALL WORK ON YOUR OWN PAPER. PHY 252 (4175)
CIRCLE YOUR ANSWERS. TEST 1 Su08 Wetli
Time for test: 100 minutes
1. Three point charges, two positive and one negative, each having a magnitude of 20 ,
Extra Credit (Ch. 23)
Phy 252
1. A thin linear rod of charge starts at x = +x0 and extends to positive infinity. The charge is
distributed non-uniformly, with a linear charge density of
x
0 20
x
2
,
Quiz 1 Phy 252
Name: K E; 51
[ke 28:99x109Nm2/C2, e=1.60><10"9C]
1. A teflon rod is rubbed with rabbit fur until it has a surface charge of ~50 nC. How many
excess electrons must be present on the s
Ch. 23
15. Three charged particles are located at the corners of an equilateral triangle as shown in
the figure below (let
,
,
q1 2.00 C q2 4.00 C q3 7.00 C
,
and L = 0.500 m). Calculate the total ele
Problem Solving Strategies for Symmetrical Charge Distributions
Gauss Law:
q
E E dA encl
0
System
Infinite line of charge
Infinite plane of charge
Uniformly charged solid
sphere
Cylindrical
Planar
S
A uniform linear charge of 2.0 nC/m is distributed along the x
axis from x = 0 to x = 3 m. Which of the following integrals is
correct for the x component of the electric field at y = 2 m on the
y axi
Names
PART I
Variable
Measured or
Calculated
Value
Uncertainty
Length
T30
T
g
Percent Error =
PART II
D1
D2
D3
D4
D5
D6
D7
D8
Avg
STDEV
Variable
Mass
Length
Diameter
Density
Measured or
Calculated
Val
PHY 251
Lab 6
Centripetal Force
A ball of mass m is attached to a string is swung with uniform motion in a horizontal circle above
a persons head. The figure below shows an overhead view of such a sys
PHY 251 Test 3 Formulary
MOMENTS OF INERTIA of HOMOGENEOUS RIGID BODIES
angular velocity change f i
angular displacement f i
avg angular velocity
avg angular accelerati on
t
t f ti
t
t f ti
time int
PHY 251
TEST 3 Spring 2011
Name: _
Show ALL work on the paper provided. INCLUDE SKETCHES. CIRCLE YOUR ANSWERS on the worksheets.
Copy your answers to this test page. Do not expect partial credit for a
PHY 251
TEST 3B Fall 2012
Name: _
Show ALL work on the paper provided. INCLUDE SKETCHES. CIRCLE YOUR ANSWERS on the worksheets.
Copy your answers to this test page. Do not expect partial credit for a
Measurement of Mass, Length,
and Time
Purpose
This lab is designed to acquaint you with basic
measurement and data analysis techniques.
Procedure I Acceleration of Gravity
Objective
Determine the
Math 273 Lab 1 F 07
Curve Balls and Vectors
Does a baseball pitch really curve or is it some sort of optical illusion? Assume the pitcher's mound is at
the point (60, 0, 0) and that home plate is at t
PHY 251
Lab 8
Torque
1. Nobody at the playground wants to play with the obnoxious boy, so he fashions a seesaw as shown
so he can play by himself. Explain how this is done. _
_
_
_
2. Why must you ben
Exevcxaeg Cdcdae HA2, waJ/L m b
WK EtWS 5w? a ) 3=>< ,j va (ow 4% W55 M W5 W pom-\- WWWQW
/
Hg List/C25 F.)FL,E,W wwmmccwxmsw
2
r f5 NOLL. M cfw_mm 51.5 mg
< abj M W
/ 42/
1m
T
\l
(paw \LWMQACL WE] K
1. The motion of a piston in an auto engine is simple harmonic. If the piston travels back and
forth over a distance of 10 cm, and the engine is running at 4200 rpm, write Its position as a
function o
('HECKPOINT I: READING GRAPHS
The graphs position vs. time below represent the motion of
two ladybugs, Kyle (K) (solid graph) and Lea (L) (dotted
graph). moving along the same straight line.
Part 1. W
Measurement of Mass, Length,
and Time
Purpose
This lab is designed to acquaint you with basic
measurement and data analysis techniques.
Procedure I Acceleration of Gravity
Objective
Determine the
PRACTICE EXAM REVIEW PROBLEMS
1
Matthew pulls his little sister Sarah in a sled on an icy surface (assume negligible friction), with a force
of 80.0 N at an angle of
upward from the horizontal. With w
PHY 151 Final Formulary Addendum
Rotational Kinetic Energy
KE rot
1
I 2
2
Rolling Motion
KE tot
Work Energy Theorem
1
1
I 2 m v2
2
2
Work KE
1
1
2
2
KE I f
I i
2
2
Conservation of Energy
Pressure
P