67 (a) The continuity equation yields Av = aV and Bernoullis equation yields 1 v 2 = p + 1 V 2 , 2 2 where p = p2 p1 . The first equation gives V = (A/a)v . Use this to substitute for V in the second equation. You should obtain 1 v 2 = p + 1 (A/a)2 v 2 .
Practice Questions for Midterm I
1. Each element is unique and different from other elements because of the number of protons in the nuclei of its atoms.
Which of the following indicates the number of protons in an atom's nucleus?
A) atomic mass
B) atomic
Sears & Zemansky: Chapter 4
Dynamics: Newtons Laws
Recall:
Kinematics deals with the concepts/terminology needed to
describe motion.
Dynamics deals with the effect that forces have on motion.
Up to now, we have been discussing kinematics.
We did not ask h
Sears & Zemansky: Chapter 5
Dynamics: Newtons Laws
[Sears & Zemansky 5.1: Frictional Forces]
Examples of Forces: The Major Players
Friction Force
A surface exerts a contact force on another surface.
friction force
component of the contact force parallel
EET 142 Review 1
Note in order to earn part marks, show your work.
1. Perform the following calculations (one mark per blank):
a) 1.02 X 104 + 5.8 X 103 = _ X 104
b) 1 200 000 - 800 000 = _X 106
2. Perform the following calculations: Express your answers
Sears & Zemansky: Chapter 6
Chapter 7
Dynamics: Energy
What is energy?
Loosely speaking:
Energy is a scalar quantity associated with the state
(or condition) of one or more objects.
Some characteristics of energy:
1. Energy can be transformed from one typ
General laboratory procedures
and safety guidelines
Biological Sciences
You are responsible for attending labs at your scheduled time and
turning in assignments accordingly.
Labs must be read and pre-lab components must be completed before
coming to lab a
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37 (a) The force of gravity mg is balanced by the buoyant force of the liquid gVs : mg = gVs . Here m is the mass of the sphere, is the density of the liquid, and Vs is the submerged volume. Thus m = Vs . The submerged volume is half the volume enclosed b