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1) Three equal negative point charges are piaccd at three
comers of a square as shown in the gure. Draw the
resulting electric eld vector at point 0 (center of the
square)
Ch 4-5 Part 1: Exploration Questions Partial Key
Question 1) Draw a free body diagram of a 145 gram baseball as it is traveling horizontally east at the
peak of its flight. Find the magnitude and direction of its weight force. Then use Newtons 2nd Law to
Ch 3 Exploration questions (Stars mean they may be a little harder than the rest) KEY
Question 1*) A projectile is launched horizontally with initial speed vo. The launch site is a height h
above the floor. The projectile lands a distance L down range fro
Ch 4 Key for practice from the book and a few extra examples at the end
4.13)
a) Based on Newtons 2nd Law, the maximum force happens from t=2.00[s] until t = 4.00[s] when the
acceleration is maximum.
b) Same time a in part a since the acceleration is cons
Problems from the book: 2.21, 2.22, 2.25, 2.60, 2.69
1
2.60)
2
2.69)
Extra Practice Question 1)
At t=0 a model rocket is launched from the ground straight up on a windless day. (The x-axis is vertical
and the ground is x=0. (Assume that there is almost no
Ch 2 Exploration Questions -Key:
Question 1) A catapult launches an aircraft from a carrier, giving it a speed of 175 mi/hr in 2.50 seconds.
a) Find the average acceleration (in m/s2 )of the plane.
b) Find the distance the plane moves (in meters) assuming
Ch 2 -Motion Notes & Examples - Key
Sections 2.1 & 2.2) Distance, displacement, speed, and velocity. Intuitive idea of average vs.
instantaneous values.
Distance is just how far you actually traveled during a trip e.g. the change in the odometer reading.
Ch 2- Intuitive Exploration of Motion Key PHY241 f16
1.1) Speed times time equals distance 120 miles
1.2) Its really the average speed times time equals distance. 60 miles per hour
1.2.1) L = vt
1.3) For the giants, the average is the sum of their heights
Chapter 1 - Exploration Examples key including some review of math concepts
1) Polar and Cartesian coordinates:
On figure 1 you can see an example of the meaning of the columns in the table. Length of the arrow is r
and could also be the radius of the cir
Ch 5: Practice key
Chapter 5
Useful solved examples within the chapter: 5.4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23
Exercises and Problems at the end of the chapter: 5.13, 14, 26, 44, 53, 63, 73
1
5.26) The free body diagram on t
Ch 3 Notes and examples - Motion Analysis in more than one dimension (sections 1 through 4)
Section 3.1-2) Displacement, velocity and acceleration same as chapter 2 except the vectors are not
along one axis direction so we have to be more careful about ma
Chapter 3
Vectors
vectors
a vector is a quantity with magnitude and direction
e.g. a displacement
smaller magnitude
different direction
vectors - magnitude & direction
the magnitude is just the length of the vector
there are several ways we could express
Name: _
PHYS 208 Recitation #3 Answer Key
2
and
1 and 2.
2
2
Start by getting E1
E1
2
E4
from symmetry, E1 E4 E . The Gaussian cylinder has
area A, so the total flux through the cylinder is.
top curved side bottom EA 0 EA 2 EA
The charge enclosed comes f
El E E ; MarlQ-Lecture16-PowerPoint ? + X
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Now assume the curve passes through a magnetic eld B.
The line i
How to use Gausss Law to find the E-field
1. Identify the charge distribution from which you will calculate the electric field.
2. Look at the shape of the charge distribution and see if it has any symmetry. Is it
spherical? Cylindrical? A planar sheet? I
PHYS 208: University Physics II
Here are the topics covered in this course
0. A review of some essential math and PHYS 207
1. Charge and Coulomb's force law
2. Electric field and methods of calculation
3. Electric potential
4. Electrical energy
5. Circuit
Welcome to
Physics 207
University Physics I
Fall 2016
Dr. Yelena Prok
Part 1
What this course is about
Physics
from Greek nature, or knowledge of nature
Physics is the study of matter and its motion though space and time.
Physics is all around us
It is
Chapter 4
Kinematics in two dimensions
Position, velocity, acceleration
1. Position
2. Average velocity
3. Instantaneous velocity
4. Average acceleration
5. Instantaneous acceleration
2
Part 1
Projectile Motion
projectile motion
wed like to to be abl
Chapter 2
Kinematics in one dimension
1
Kinematics & Dynamics
Kinematics:
Description of Motion without regard to its cause.
Dynamics:
Study of principles that relate motion to its cause.
Basic physical variables in kinematics and dynamics:
Time
Positio
Chapter 1 sections 6-9 - Class Notes & Examples - Scalars and Vectors (High Priority)
Objectives
Use scalars to describe quantities that have only magnitude and vectors to describe quantities that
have magnitude and direction.
Develop intuitive ideas ab
Chapter 1 - Exploration Examples including some review of math concepts
*1) Polar and Cartesian coordinates:
On figure 1 you can see an example of the meaning of the columns in the table. Length of the arrow is r
and could also be the radius of the circle