Physics 211
Spring 2015
Homework 7
Name _Solutions_
Due Monday, April 6th
1. An apple drops from the top of the Empire State Building, 380 m above street level. How long
does the apple take to fall? What is its impact velocity on the street? Ignore air re
Physics 211 Spring 2015
Exam 1
Name:
Formulae that might be useful:
Forces
mm
Gravitational force: Fgrav = G 1 2 2 where G = 6.67x10-11 Nm2/kg2
r
On the surface of the earth, G
mE
2
grav = mg
2 = g = 10m / s , so F
RE
qq
Electrostatic (Coulomb) force: Fel
Physics 211 Spring 2015
Exam 1
Name:
Formulae that might be useful:
Forces
mm
Gravitational force: Fgrav = G 1 2 2 where G = 6.67x10-11 Nm2/kg2
r
On the surface of the earth, G
mE
2
grav = mg
2 = g = 10m / s , so F
RE
qq
Electrostatic (Coulomb) force: Fel
Physics 211
Practice Exam 2, Spring, 2015
1.
2.
Name:
Solutions
Page 1. [35 points total on this page] Short questions. Be sure to show your work or explain how you
determined your answer.
v
i. [7 points] A scientist graphing the velocity versus time of a
Physics 211
Spring 2015
1.
i.
Kinematics Graphs
Name: _Solutions_
Friday, March 13th
The graph shown is for an object in one-dimensional motion.
The vertical axis is not labeled.
If the vertical axis is position, does the object ever change
direction? If
Physics 211
Spring 2015
Homework 6
Name: _Solutions_
Due Friday, March 13th
1. At the instant shown, a skateboard rider is coasting down a hill and speeding up. (For this problem,
ignore friction. Treat the skateboard and the rider as a single system.)
i.
Physics 211
Spring 2015
Homework 5
Name_Solutions_
Due Friday, March 6th
Do these problems on a separate sheet of paper. For each of these problems, you will need to identify a
system, draw a free-body diagram, and then use Newton's second law as part of
Physics 211-M02
Spring 2015
Homework 4
Solutions
Due Friday, February 27th
Use a separate sheet (or sheets) of paper as necessary. Homework is due before the beginning of lecture.
On all of the following problems, show clearly how you obtained your answer
Physics 211 Spring 2015
Exam 1
Name:_Solutions
1. [35 points] Short questions. Be sure to show your work or explain how you determined your answer.
i.
[7 points] A block has a string tied to it (not shown), and is being pulled to
the right at a constant s
Physics 211 Spring 2015
Exam 1
Name:
1. [35 points] Short questions. Be sure to show your work or explain how you
determined your answer.
Crate
i.
[7 points] A large crate has a rope tied to it (not shown), and the rope is
pulled so that the crate moves t
Physics 211 Spring 2015
Practice Exam 1
Name:
Solutions
1. [35 points] Short questions. Be sure to show your work or explain how you determined your answer.
i.
[7 points] A free-body diagram is shown for a 2-kg object, but one of the
forces is missing. At
Physics 211-M02
Spring 2015
Homework 3
Solutions
Due Friday, February 13th
1. A special physics string that floats on water is stretched around the equator. You then add 6 feet to the
string, and support it so that it is the same height above the surface
Physics 211
Spring 2015
Homework 2
Name_Solutions_
Due Friday, February 6th
Do the following problems on a separate sheet of paper. Be sure to show your work and to include units
in all your calculations and in your answers. You will need to use informati
Physics 211 Section 2
Spring 2015
Homework 1
Name
Solutions
Use a separate sheet (or sheets) of paper as necessary. Homework is due at the beginning of lecture on
Wednesday, January 28th. Reasoning counts! Be sure to show how you obtained your answers (fo
Oscar Talamantes
Feb. 14, 2017
ET 217
Description of Holes
Hole 1:
Operation 1: Center punch then Center drill
Operation 2: CW Bore 1.25 depth of .375
Operation 3: Center punch then Center drill
Operation 4:With the W deep holes drill. Drill through the p
Physics 221G - Fall 2011; 09/01/2011
QUIZ 1 (20p + 2 bonus)
Name:
1D - Kinematics:
x f xi
v f vi
vav
aav
t f ti
t f ti
x f xi vav t
const. acceleration: v f vi at
x f xi vi t
12
at
2
v f 2 vi 2 2 a x f xi
g 9.81
m
s2
(note: ti 0, t f t in those equatio
Physics 221G - Fall 2012; 09/06/2012
QUIZ 1 (20p + 2 bonus)
Solution
1D - Kinematics:
x f xi
v f vi
vav
aav
t f ti
t f ti
x f xi vav t
const. acceleration: v f vi at
x f xi vi t
12
at
2
v f 2 vi 2 2 a x f xi
g 9.81
m
s2
(note: ti 0, t f t in those equa
Name:
Physics 221 - Fall 2010; 09/16/2010
EXAM 1 (100p + 10p bonus)
Show your work! In order to get full credit you need to document your problem solving steps
(e.g. equations, arguments, calculations) so a reader can follow how you got your result.
Use t