Physics 6A Practice Midterm #2
1. A locomotive engine of mass M is attached to 5 train cars, each of mass M. The
engine produces a constant force that moves the train forward at acceleration a. If 3
o
Physics 6A
Practice Midterm #2
solutions
Prepared by Vince Zaccone
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1. A locomotive engine of mass M is attached to 5 train cars, each of mass M. The eng
FORMULA SHEET PHYSICS 6A FINAL EXAM, WINTER 2014
x2 ! x1 " x
=
"t
t 2 ! t1
(average velocity, straight-line motion)
x = x0 + vx t (constant velocity only)
v !v
"v
aaverage,x = 2 x 1x = x
t 2 ! t1
"t
(
43v age Velocity. -
' Cféntaneous velocity. I 3) Yeeare a turn at 30.0 mls on a ramp of radius 25.!) m. What is ammtim
' A) 0333 mis2 '
_ 20.8 fmfs:2 - -
' D) 1.20. mfsz
_ 4) an airplane needs to r
(1-3) The position vs. time graph is shown:
1.
a)
b)
c)
d)
e)
What is the distance traveled from t = 0 - 4 sec?
3m
4m
5m
6m
7m
2.
a)
b)
c)
d)
e)
What is the magnitude of displacement from t = 0 - 4 se
1.
a)
b)
c)
d)
e)
Vector A B is shown and vector A has x- and y- components (5, 5). The magnitude of B is:
7
6
5
4
3
2. A person starts at a corner of a square track of side length 100 m and runs at a
Physics 6A Midterm Exam 8-9:15 a.m. class Wednesday, February 12, 2014 Version A
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1) A 7.0-kg obje
Problem 24.1 (I) Monochromatic light falling on two slits 0.016 mm apart produces the fifthorder fringe at an 8.8 angle. What is the wavelength of the light used?
For constructive interference, the pa
MasteringPhysics: Assignment Print View
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9a. Geometric Optics
Due: 11:00pm on Sunday, March 7, 2010
Note: To understand how points are a
Astro 1 Lecture 1 2010-03-29
A problem for you
1. What is the difference between centripetal and radial
acceleration?
2. Can you give an example of how a nonuniform circular
motion acceleration vector
Astro 1 Lecture 1 2010-03-29
Physics Mailbag
1. How is it possible for the acceleration of an object to remain
constant if the velocity of the object is changing? Isnt the
denition of acceleration the
Astro 1 Lecture 1 2010-03-29
Physics Mailbag
1. When an object is thrown into the air (no air resistance), it
spends the same amount of time going up and down. Why is
that so? Wouldnt the object fall
Astro 1 Lecture 1 2010-03-29
Q3.6
A3.6
A question for you:
A pendulum swings back and forth, reaching a maximum angle of
45 from the vertical. Which arrow shows the direction of the
pendulum bobs acce
Astro 1 Lecture 1 2010-03-29
1. Do we always need to make a free-body diagram for a cord?
Cant we just assume that the force is the same on both sides
of it? What if the cord is bent around a pulley?
Astro 1 Lecture 1 2010-03-29
A question for you:
Answer
Which of these four vectors has a positive x-component and
a negative ycomponent?
Which of these four vectors has a positive x-component and
a n
Physics 6A Freedman Final Exam
Saturday 3/15/2014
IMPORTANT: This exam is Version A
Instructions:
DO NOT OPEN THIS EXAM BOOK
UNTIL INSTRUCTED TO DO SO.
EXTREMELY IMPORTANT:
On your Scan-Tron form:
P
Astro 1 Lecture 1 2010-03-29
Physics Mailbag
1. When theres a parabolic projectile, is it safe to
multiply by 2 the distance it takes for the object to
reach zero velocity at the peak of the curve to
Astro 1 Lecture 1 2010-03-29
1. If the net force goes in the downward direction, does that
make it negative?
2. The book states that the only force that affects a system is an
external force. Yet if o
Astro 1 Lecture 1 2010-03-29
The work-energy theorem
Q1: Does all kinetic energy transfer back into potential energy?
Q2: I am having a hard time understanding the equation for work
done by gravitatio
Astro 1 Lecture 1 2010-03-29
Q1. How do you know what sign to use for the sum of torque? Is
counterclockwise always going to be positive, and clockwise
always negative?
Q2. Is the magnitude of torque
Astro 1 Lecture 1 2010-03-29
Q1: In chapter 10 they* describe
Hookes law as stress/strain=Y. Is this
the same as/related to the Hookes law
we used for springs?
* Whos they?
Q2: Why is it that the tens
Astro 1 Lecture 1 2010-03-29
1. I dont completely understand the difference between an
inelastic collision and a completely inelastic collision. Are
most inelastic collisions completely inelastic?
3.
11.4-11.5
Grace Levine
Surface Tension
liquids tend to minimize their surface area
In order to increase the surface area of the
liquid, molecules from the interior have to be
moved to the surface, a
Name: FRED-BOUFINI KEITH AMAEBI.
College: MEDICINE AND HEALTH SCIENCE.
Department: MEDICINE AND SURGERY.
Course: BIO 101.
DATE: 27TH DECEMBER, 2015.
An organism has 56 chromosomes in its diploid stage
Newton's law of physics
-codiscovered calculus
3 laws of Newton
-force of gravity (Fg) is also the weight
-normal force (Fn)
-(Ft)
-forces are vectors need to worry about direction and magnitud
How does P translate to L?
Example
Let's look at a block and we fired a bullet and there's a collision and the idea we used here to study
the system is that during the collision, if that surface is
Work (W)
If he pushes twice as much force, doing twice as much physical work
they are proportional
-what if you push an object, instead of 2m you push it for 4m (double the distance)
double the w
Drop an object from rest, fall downward= free fall
Projectile motion is the same (neglect air resistance)
Only dierence is more general pace, not usually dropping object from rest
Object is projec
-think of systems
-two people on a frictionless surface and they're going to push o of each other
starting at rest
They most certainly not move as a unit
Person two will accelerate to the right
Momentum and Impulse
Physics 6A
Prepared by Vince Zaccone
For Campus Learning
Assistance Services at UCSB
Momentum
any moving object will have both momentum and kinetic energy
We use a lowercase p for
Physics 6A
Rotational Motion
Prepared by Vince Zaccone
For Campus Learning
Assistance Services at UCSB
First some quick geometry review:
x = r
r
We need this formula for arc length
to see the connecti
Circular Motion
Physics 6A
Prepared by Vince Zaccone
For Campus Learning
Assistance Services at UCSB
We have a formula that we will use often for circular motion.
For an object moving in a circular pa
Physics 6A
Practice Final
Solutions
Prepared by Vince Zaccone
For Campus Learning
Assistance Services at UCSB
1) A helicopter traveling upwards at 121 m/s drops a package from a height of 500m above t
Physics 6A
Stress, Strain and
Elastic Deformations
Prepared by Vince Zaccone
For Campus Learning
Assistance Services at UCSB
When a force is applied to an object, it will deform. If it snaps back to i