Physics 120 Homework Set #3
Due Friday April 9 at 1:25pm
1.
If the Sun were to collapse and to form a black hole, the radius of this back hole
would be about 3 km. Suppose all the mass of the galaxy were to suddenly
collapse together to form a hypermassiv
Chapter 3 Notes
kinematics
how things move
dynamics
what causes things to move
mechanics
study of motion
frame of reference
conditions in which action is being observed
vector
quantity that has magnitude and direction
displacement
vector. change in positi
Exam 3 Study Guide part 1
Beats measure
The difference between 2 frequencies.
Waves tend to bend to the side
with slower wave velocity.
The fastest earthquake wave is
the P wave.
The slowest earthquake wave is
the L wave.
An octave refers to two frequenci
Exam 3 Study Guide part 3
The wavelength of visible light is closest to the diameter of
a red blood cell
The Keck telescope is "powerful" because
it has bigger a mirror to collect light
When we say a man is color blind, we usually mean that
he can't disti
Exam 3 Study Guide part 2
The flying disks that crashed near Roswell were
microphones
Very long wavelength water waves
travel faster than short ones
Whats and fiber optics make use of what principle?
Huygens
When an earthquake at sea starts a tsunami, the
Chapter 2
Force
An influence that tends to accelerate an object; a push or pull; measure in
newtons. A vector quantity. State of motion: at rest, or moving in a
uniformly line.
Net Force
The combination of all the forces that act on an object.
Vector
An a
Physics Formula part 2
Emf = IR + Ir = V + Ir
equations for EMF, in relation to internal resistance
delta E = mc delta theta
equation for ENERGY, in relation to specific heat capacity
v = f lambda
equation for VELOCITY of a wave
c = f lambda
equation for
Final Exam Study Guide part 3
convex
this type of lens magnifies
convergent
a convex lens is _, because all the light rays come together
concave
this type of lens reduces
divergent
a concave lens is _, because the light rays spread apart
concave
this type
Physics Formula part 1
F = ma = m (delta v / delta t)
equation for FORCE, in relation to mass
a=F/m
equation for ACCELERATION, in relation to force
F = ma = m (delta v / delta t)
equation for FORCE, in relation to acceleration
W = mg
equation for WEIGHT
m
Final Exam Study Guide part 2
longitudinal (compression) wave
a type of mechanical wave in which matter moves back and forth parallel to
the direction of the wave
frequency
measures the number of waves that pass a certain point in one second
Hertz
frequen
Physical Measurement Notes
Order of Magnitude
the order of magnitude of a quantity is the number rounded to the nearest
power of 10
Fundamental Units
seven basic units of the SI measurement system: kilogram, second, mole,
meter, ampere, Kelvin, candela.
R
Eric Beaudette
March 10, 2013
Mass and Energy
Everyone has heard of Einsteins famous formula E=mc2 but not many people know
what it really means. The formula is part of the massenergy equivalence concept, which states
that the mass of a body is a measure
Eric Beaudette
April 9, 2013
Lecture Highlights 9
The Sun is an amazing source of energy. The gaseous ball is about 100 times larger than
Earth and about 300,000 times more massive. The sun is made up of 70% hydrogen and 28%
helium, with a blistering surf
Eric Beaudette
April 28, 2013
The Holographic Universe
The holographic universe theory is a property of quantum gravity and string theory, and
has been discussed for generations among many famous scientists from Albert Einstein to
Stephen Hawking. The the
Eric Beaudette
January 27, 2013
Lecture Highlights
The world of physics is composed of many ideas, principles, and theories, all of which
can be related to one another in some way. Among these, some theories like the string theory for
example can be very
Eric Beaudette
February 4, 2013
Lecture Highlights 2
The coordinate system is made up of x and y. X is used to describe the horizontal line on
the graph and Y is used to describe vertical line. There is also a Z variable which is used to
describe depth in
Eric Beaudette
February 11, 2013
Lecture Highlights 3
Special relativity states that the laws of nature are the same in all inertial frames and the
speed of light is always observed as the same regardless of the motion of the source or the
observer. Furth
Eric Beaudette
February 19, 2013
Lecture Highlights 4
The universe is different for everything that exists, and nothing is really normal.
Everything that is happens is only relative to the observer and their frame of reference. Imagine
being a muon and se
Eric Beaudette
February 25, 2013
Lecture Highlights 5
Forms of energy can be divided into two main groups; kinetic energy and rest energy.
Kinetic energy is the energy something has as its moving through space and time. From a rock
dropping, to a person m
Eric Beaudette
March 4, 2013
Lecture Highlights 6
There are two main reasons why light can seem like its bending. Light doesnt have any
mass, so it cant actually bend, but it can give the illusion that it is. Einstein used his equivalence
principle to exp
Eric Beaudette
March 27, 2013
Lecture Highlights 7
A very important topic that was explained is the black hole. A black hole is what happens
when a star collapses due to gravity. At the center of a black hole spacetime is infinitely curved.
This is due to
Eric Beaudette
April 2, 2013
Lecture Highlights 8
The uncertainty principle plays a major role in quantum physics. More so specifically in
quantum physics because in very small masses the rules of the game change. In physics
regarding planets and other hu
Final Exam Study Guide part 1
motion
a change in position, measured by distance and time
speed
the distance traveled by a moving object per unit of time
(distance/time)
average speed
total distance/ total time
velocity
speed in a given direction
accelerat