PHYS 207-ST, Spring 2006
Final Exam, (Thursday May 25)
Good Luck!
1. A head-on collision occurs between two cars on a highway. The smaller car has a mass of
1000 kg while the mass of the large car is 4000 kg. a) Which car has a greater magnitude of
moment
31. Fluid Mechanics II
31.1 Archimedes Principle
Archimedess Principle states that the magnitude of the buoyant force always equals the weight
of the uid displaced by the object. Consider a cubic object completely submerged in a uid, as
shown in the gure.
10. Kinetic Energy and Work II
10.1 Hookes Law
A spring corresponds to a model of a common physical system for which the force varies with
position. The block is on a horizontal, frictionless surface. The force exerted by the spring is,
Fs = kx ,
(10.1)
w
9. Kinetic Energy and Work I
9.1
Introduction to Energy
The concept of energy is one of the most important topics in science and engineering. Every physical
process that occurs in the Universe involves energy and energy transfers or transformations.
Energ
7. Force and Motion I
7.1
Force
Forces are what cause any change in the velocity of an object, according to Newtons denition, a
force is that which causes an acceleration. There are two classes of forces, contact forces and eld
forces. Contact forces invo
4. Vectors
4.1
Cartesian coordinate system
A coordinate system is used to describe the position of a point in space, and consists of a xed
reference point called the origin, and specic axes with scales and labels. In the Cartesian coordinate
system, also
2. Motion in one dimension I
2.1
Position, distance and displacement
Kinematics describes motion while ignoring the agents (and reasons) that caused the motion. For
now, we will consider motion in one dimension along a straight line, using the particle mo
6. Motion in 2D and 3D II
6.1
Range and maximum height of a projectile
When analyzing projectile motion, two characteristics are of special interest. The horizontal
distance of the projectile or range, R, and the maximum height the projectile reaches, h.
5. Motion in 2D and 3D I
5.1
Position and displacement
The position of an object is described by its position vector:
r = x i + y j + zk ,
(5.1)
and he displacement of the object is dened as the change in its position,
Dr = r f
ri ,
(5.2)
Figure 5.1: Di
3. Motion in one dimension II
3.1
Particle under constant acceleration
For a particle under constant acceleration, the average acceleration and instantaneous acceleration
are equal. Therefore, one can use equation (2.8), as
a = aave =
vf
t
vi
,
0
(3.1)
wh
1. Introduction, units, and measurements
Pick a ower on Earth and you move the farthest star. Paul Dirac
1.1
Introduction
The main goal of PHYS-207 is to understand the basic physics necessary for a career in engineering
and/or in science. PHYS-207 is the
Final Exam (Practice test)
PHYS-207
BB, BB2, BB3, BB4 & BB5
Fall Semester 2015
Miguel Fiolhais
1. An elevator cab and its load have a combined mass of 1600 kg. Find the tension in
the supporting cable when the cab, originally moving downward at 12 m/s, is
28. Oscillatory Motion II
28.1 Energy of the SHM oscillator
If a spring-mass system is moving on a frictionless surface, then the total energy is constant. The
kinetic energy can be found by,
1
1
1
K = mv2 = mA2 w 2 sin2 (wt + f ) = kA2 sin2 (wt + f ) .
2
29. Oscillatory Motion III
29.1 Physical pendulum
If a hanging object oscillates about a xed axis that does not pass through the center of mass and
the object cannot be approximated as a particle, the system is called a physical pendulum it
cannot be trea
27. Oscillatory Motion I
27.1 Periodic motion
Periodic motion is the motion of an object that regularly returns to a given position after a xed
time interval. A special kind of periodic motion occurs in mechanical systems when the force acting
on the obje
Lawrence Mensah
Physics 207 Lab
Experiment 7
Introduction
Our seventh and final lab was about calculating hydrostatic pressure of an object in a fluid. We
are to find unknown densities, volumes and masses of objects. You can find real world examples
about
Lawrence Mensah
Physics 207 Lab
Experiment 6
Introduction
Our sixth lab was about studying the motion of a mass hanging from a spring. This experiment
purpose is to better grasp the concept of a simple harmonic motion and to distinguish simple
harmonic re
ock sticks to the spring and momentarily stops after comg the spring 19.0 cm. How much work is done (a) by the
n the spring and (b) by the spring on the block? (c) What is
ue of 110? (d) If the block were released from height 2.00110
Midterm Two (Practice
37. Entropy
37.1 Entropy and Second Law of Thermodynamics
Entropy, S, is a state variable related to the second law of thermodynamics. The importance of
entropy grew with the development of statistical mechanics, as isolated systems tend towards
disorder
20. Angular Momentum II
20.1 Angular momentum of a rotating rigid object
Lets assume that each particle of a rigid object rotates in the xy-plane about the z-axis with an
angular speed of w.
Figure 20.1: Angular momentum.
The magnitude of the angular mome
19. Angular Momentum I
19.1 Rolling motion
In pure rolling motion, an object rolls without slipping. In such a case, there is a simple relationship
between its rotational and translational motions.
Figure 19.1: Pure rolling motion.
The velocity of the cen
35. Kinetic Theory of Gases II
35.1 Adiabatic Processes for an Ideal Gas
An adiabatic process is one in which no energy is transferred by heat between a system and its
surroundings. Assume an ideal gas is in an equilibrium state, and therefore, PV = nRT i
33. Temperature and Heat II
33.1 Heat
Heat is dened as the transfer of energy across the boundary of a system due to a temperature
difference between the system and its surroundings. The term heat will also be used to represent the
amount of energy transf
34. Kinetic Theory of Gases I
34.1 Equation of state and Ideal Gas
The equation that interrelates the volume, pressure and temperature of a gas is called the equation
of state. These are generally quite complicated, but if the gas is maintained at a low p
30. Fluid Mechanics I
30.1 Fluids and Pressure
A uid is a collection of molecules that are randomly arranged and held together by weak cohesive
forces and by forces exerted by the walls of a container. Both liquids and gases are uids. Fluid
Statics descri
32. Temperature and Heat I
32.1 Temperature
We associate the concept of temperature with how hot or cold an object feels. Our senses provide us
with a qualitative indication of temperature, but are unreliable for this purpose. We need a reliable
and repro
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PHYS-207 Honors Section HW13 Solutions
19.3. In solving the id eal-gas law equ ation pV = nRT for n, w e first convert the tem p eratu re to the Kelvin
scale:
Ti (40.0 273.15) K 313.15 K , and the volu m e to SI u nits: Vi 1000 cm3 103 m3 .
(a) The nu m b