Wavelength, wave speed, wave amplitude
1. (fall10, ex3, q18, Mueller/Qiu)
A sinusoidal wave is traveling toward the right as shown in the figure. Which letter
correctly labels the wavelength of the wave?
(1) A
(2) E
(3) C
(4) B
(5) D
Solution
Wavelength i
Chapter 3 Problems
Vectors
1. (fall06, ex1, q1, Ihas/Biswas, ch3)
When three vectors are added graphically they form a closed triangle. The largest
enclosed angle between any two of the vectors cannot be greater than:
(1) 180
(2) 90
(3) 60
(4) No maximum
Chapter 2
Displacement (x or y)
Distance moved from a
starting point.
Velocity (v)
How fast something is
moving (and what direction
its moving in).
Its different than distance
if the object doesnt travel
in a straight line.
Its different than speed in
tha
1
Chapter 7
Chapter 7 deals with the ideas of momentum, impulse, and collisions.
Most problems relating to this chapter are actually rather simple.
Momentum
Momentum is a vector consisting of an objects mass and velocity:
p = mv
p is the momentum, measure
1
Chapter 6
Chapter 6 deals with work, kinetic energy, and potential energy.
These concepts are relatively interchangeable with kinematics, so often it is
possible to solve a problem using either method.
Its a good idea to try solving with energy first, b
1
Chapter 3
Chapter 3 introduces the idea of vectors, relative motion, and 2-dimensional
kinematics.
Vectors
Vector: anything you can define as having both a magnitude and a direction is
known as a vector.
Magnitude: anything that has a size, quantity, st
1
Chapter 4
Chapter 4 deals with Newtons Laws and forces.
Force
Force measures the strength of a push or pull on an object.
Force is given in units of Newtons (N). This is an important derived unit equal to
1kgm/s2.
Forces are vectors, so it is also impor
1
Chapter 5
Chapter 5 deals primarily with rotation. Below are a few important definitions
for this chapter.
Radians, degrees, revolutions
Youll see three different systems for measuring angle and rotation in this
chapter. Degrees, revolutions, and radian
1
Chapter 1
Chapter 1 brings up two core issues you need to understand before really getting
started with physics 1:
1. Scientific notation
2. SI units and conversions
You can ignore a lot of stuff in chapter 1. Dont worry about:
1. Significant figures. T
1
Chapter 8
Chapter 8 is a continuation of the ideas presented in chapter 5, dealing primarily
with the physics of rotating systems.
In this chapter torque () and moment of inertia (I) are the key concepts.
Conservation of angular momentum (L) and rotatio
Chapter 2
Displacement (x or y)
Distance moved from a
starting point.
Velocity (v)
How fast something is
moving (and what direction
its moving in).
Its different than distance
if the object doesnt travel
in a straight line.
Its different than speed in
tha
Chapter 2
Displacement (x or y)
Distance moved from a
starting point.
Velocity (v)
How fast something is
moving (and what direction
its moving in).
Its different than distance
if the object doesnt travel
in a straight line.
Its different than speed in
tha
1
Definition of angular speed
1. (fall10, ex2, q1,Mueller/Qiu, ch5, angular speed)
An angular speed of 1rad/s corresponds to about:
(1) 9.55rev/min
(2) 60rev/min
(3) 30rev/min
(4) 19.1 rev/min
(5) 0.159 rev/min
Solution
In order to convert radians per sec
1
Chapter 12
This chapter deals primarily with sound waves.
The most common questions relate to the Doppler Effect.
Speed of Sound
The speed of sound is not a constant. It travels at different rates depending on
the density and temperature of the substanc
1
Definition of displacement
1. (fall10, ex1, q1, Mueller/Qiu, ch2)
A particle moves along the x-axis from xi to xf. Of the following values of the initial and
final coordinates, which results in the displacement with the largest magnitude?
(1)
(2)
(3)
(4
1
Stress and Strain
When an object is pulled on so as to stretch, or pushed on so as to compress, we
call the action of compressing or stretching it the stress.
Stress is defined in the same way as pressure:
stress =
F
A
stress has units of Pa, just like
1
Chapter 9.1-9.6
This chapter deals with density, pressure, buoyant force, and fluid flow.
The part about fluid flow is different enough that it deserves its own section.
Density
Density represents how concentrated an objects mass must be. It can be
expr
1
Chapter 11
Wavelength, wave speed, wave amplitude
Wavelength is defined as the distance between two identical points on a wave.
Often we think of this as the distance between successive crests or troughs:
Another important way of defining it is the dist
1
Force vector problems (13)
1. (spr11, ex1, q9, Rinzler/Qiu, ch4)
The system shown in the sketch is in equilibrium (i.e., the sum of all forces acting at the
origin are zero). Tension T2 has a magnitude of 45.0 N. Tension T3 must be:
(1) 56.3 N
(2) 45.0
1
Isolation of A Lipid from Nutmeg
Introduction
The lipids isolated from most sources contain mixtures of fatty acid components.
The lipid isolated from nutmeg, however, contains almost totally the 14-carbon
fatty acid, tetradecanoic acid, which is common