Life Cycle Assessment Project
Jennifer Holliday
Taylor Beall
Lindsay Duran
Libby Donovan
Abstract
We conducted a Life Cycle Assessment on the differences between Crayola Anti- dust chalk and
EXPO Markers. We are doing this comparison because at Smith Coll
Centroids
xA =
xdA
Centroids
xA =
xdA
Firstmomentofarea
aboutyaxis
Centroids
xA =
xdA
MomentofInertia
x dA
= y dA
Iy =
2
Ix
2
Firstmomentofarea
aboutyaxis
Centroids
xA =
xdA
Firstmomentofarea
aboutyaxis
MomentofInertia
x dA
= y dA
Iy =
2
Ix
2
PolarMomento
Topics for Midterm 2
October 27, 2013
Chain rule
tree diagrams
using a table of data to solve a chain rule problem
implicit dierentiation using the chain rule
Directional derivatives and the gradient vector
denition of directional derivative
how to
Topics for Final Exam
December 8, 2013
These are the topics that were not covered on the previous two exams.
You are also expected to know those topics as well.
Vector Fields
Denition of a vector eld
Matching a picture of a vector eld to its equation a
Units
Almost every quantity that you measure has units. If someone asks you the distance from
the Earth to the sun you could say its 93 million miles or 150 million kilometers. If you
say that it is 700 seconds, or just 50, then your answer is not just wr
PHY 210 Mathematical Methods
Spring 2014
HW #2 SOLUTIONS
All problems from Chapter 1, Introduction to Ordinary Differential Equations.
1. Section 3.3, Problem 11
For each scenario below, write a differential equation that describes the physical situation:
CHAPTER 7
Knowledge Building
Theory, Pedagogy, and Technology
Marlene Scardamalia and Carl Bereiter
There are substantial similarities between
deep learning and the processes by which
knowledge advances in the disciplines. During the 1 9 6os efforts to ex
How to use Knowledge Forum
1. Logging in
Knowledge Forum is http:/styx.smith.edu:8080
Use Firefox or Safari as your browser.
Make sure the Database
corresponds to Instructor
name
Click on Enhanced.
If you are asked, allow your computer
run the required pr
Knowledge Building Essay
Our knowledge building group focused on understanding infrastructure, but more
specifically bridges and how they fail. As our group discourse progressed, we delved into many
diverse topics and branches of bridge engineering. Our r
Smith College
Picker Engineering Program
EGR 270: Homework #8
Complete 4 of the following 5 problems:
1. Calculate Ix and Iy about the centroidal axes.
2. Calculate Ix and Iy about both the given x and
y axes and about the centroidal x and y axes.
3. To f
Steel
Aluminum
Concrete
Finding yield strength
through offset method.
Stress-Strain Framework
Design a winch cable to pull this jeep out.
Design a winch cable to pull
this jeep out.
Smith College
Picker Engineering Program
EGR 270: Homework #7
Complete all of the following problems:
7.46 Find the reactions at A and B.
7.55 Find the reactions at A and B.
7.66 The aerodynamic lift of
the wing is described by the
distributed load w = -3
Smith College
Picker Engineering Program
EGR 270: Homework #10
Complete 2 of the following problems:
1. Determine the internal forces (P and V)
and moment (M) at A.
2. The mass m = 120 kg. Determine the internal
forces and moment at A.
3. Determine V and
Smith College
Picker Engineering Program
EGR 270: Homework #5
Complete all of the following 7 problems.
1. A common shoulder exercise is the dumbbell front raise (see the video on Moodle). In
this exercise your arm is supported like a cantilever beam in f
EGR 270: Shear Stress Examples
Given: A drawbar is used on trains, cars, and a
variety of agricultural, industrial and
recreational vehicles to pull loads. A drawbar
on the back of a farm tractor is illustrated to
the right.
You are in charge of analyzing
10 kN
1. Find the reactions and forces in Pin B.
4 kN/m
4
3
A
2m
2m
B
2m
C
2. Find the reactions and
forces in the pins.
3. Find M in the crankshaft for equilibrium
4.