Quiz 6
1. It takes a force of 60.0 N to compress the spring of a toy popgun 0.19 m to "load" a
0.10 kg ball. With what speed will the ball leave the gun? _ m/s
2. A 1.10 kg box rests on a plank that is inclined at an angle of 75.0 above the
horizontal. Th
General Physics
KINEMATICS IN ONE DIMENSION
Kinematics
Kinematics is the study of the motion of objects and involves the
study of the following concepts: distance, speed, acceleration, and
time.
In this chapter, we will discuss only one dimensional mot
Quiz 5
1. The blades of a fan running at low speed turn at 210 rpm. When the fan is switched
to high speed, the rotation rate increases uniformly to 370 rpm in 5.00 s. What is the
angular displacement of the blades during that time interval? _ rad
2. In l
Quiz 4
1. A car of mass 1420 kg traveling at 26 m/s is at the foot of a hill that rises 100 m in
3.6 km. At the top of the hill, the speed of the car is 10 m/s. Find the average power
delivered by the car's engine, neglecting any frictional losses. _ Watt
General Physics
MATHEMATICAL CONCEPTS
Addition of Vectors
The resultant of two vectors that point in the same direction will be
the arithmetic sum of the magnitudes, and the direction of the
resultant will be the direction of the original vectors.
y
A
General Physics
KINEMATICS IN TWO DIMENSION
Projectile Motion
Projectile motion is the motion of an object fired at an angle with
the horizontal.
This motion can be discussed by analyzing the horizontal (x)
component of the objects motion independently
General Physics
DYNAMICS OF UNIFORM CIRCULAR MOTION
Angular velocity
The average angular velocity () is measured by dividing the
angular displacement () by the time of travel (t). The angular
velocity is measured in radians per second
t
The S.I. unit f
General Physics
FORCES AND NEWTONS LAWS OF MOTION
Newtons Laws of Motion
Dynamics is the study of the causes of motion. The basic causes of
motion can be explained by using Newtons three laws of motion.
The net force refers to the vector sum of all the
General Physics
ROTATIONAL KINEMATICS
Circular Motion
Angular displacement () is measured in degrees, revolutions or
radians. The radian is used most often.
The angular displacement is given by
s
r
where r is the radius and s is the length of arc in t
CHAPTER 7 IMPULSE AND MOMENTUM
ANSWERS TO FOCUS ON CONCEPTS QUESTIONS
_
1.
(b) Kinetic energy, 1 mv 2 , is a scalar quantity and is the same for both cars. Momentum,
2
mv, is a vector quantity that has a magnitude and a direction. The two cars have differ
CHAPTER 6 WORK AND ENERGY
ANSWERS TO FOCUS ON CONCEPTS QUESTIONS
1. (e) When the force is perpendicular to the displacement, as in C, there is no work. When the
force points in the same direction as the displacement, as in B, the maximum work is done.
Whe
CHAPTER 5 DYNAMICS OF UNIFORM
CIRCULAR MOTION
ANSWERS TO FOCUS ON CONCEPTS QUESTIONS
_
1.
(c) The velocity of car A has a constant magnitude (speed) and direction. Since its velocity
is constant, car A does not have an acceleration. The velocity of car B
CHAPTER 4 FORCES AND NEWTON'S LAWS
OF MOTION
ANSWERS TO FOCUS ON CONCEPTS QUESTIONS
1. (b) If only one force acts on the object, it is the net force; thus, the net force must be nonzero.
Consequently, the velocity would change, according to Newtons first
CHAPTER 3 KINEMATICS IN
TWO DIMENSIONS
ANSWERS TO FOCUS ON CONCEPTS QUESTIONS
1.
(a) The horizontal component vx of the projectiles velocity remains constant throughout the
2
motion, since the acceleration ax in the horizontal direction is zero (ax = 0 m/
CHAPTER 2 KINEMATICS IN
ONE DIMENSION
ANSWERS TO FOCUS ON CONCEPTS QUESTIONS
1. (b) Displacement, being a vector, conveys information about magnitude and direction.
Distance conveys no information about direction and, hence, is not a vector.
2. (c) Since
CHAPTER 1 INTRODUCTION AND
MATHEMATICAL CONCEPTS
ANSWERS TO FOCUS ON CONCEPTS QUESTIONS
1.
(d) The resultant vector R is drawn from the tail of the first vector to the head of the last
vector.
2.
(c) Note from the drawing that the magnitude R of the resul
General Physics
IMPULSE AND MOMENTUM
Linear Momentum
Linear momentum (p) is defined as the product of an objects mass
(m) and its velocity (v).
Momentum is a vector quantity and the direction of momentum
vector is the same as the velocity vector.
p mv
General Physics
ELASTICITY AND SIMPLE HARMONIC
MOTION
Hookes Law and Ideal Springs
Hookes Law states that stress is
directly proportional to strain.
Hookes law is found to hold for most
materials, e.g., a wire, rubber band or a
spring up to a point whi
General Physics
TEMPERATURE AND HEAT
Temperature
Temperature is a measure of relative hotness
and coldness. The temperature of a substance
is measured with a device called a
thermometer.
The thermometer is usually calibrated in terms
of degrees Fahrenh
Information Technology & Software Engineering
Editorial
Ramakrishnan, J Inform Tech Soft Engg 2012, S8
http:/dx.doi.org/10.4172/2165-7866.S8-e001
Open Access
System Analysis and Design
Ramakrishnan S*
Department of Information Technology, Dr. Mahalingam C
Quiz 7
1. A 3.10 kg block of copper at a temperature of 83 C is dropped into a bucket
containing a mixture of ice and water whose total mass is 1.00 kg. When thermal
equilibrium is reached the temperature of the water is 15 C. How much ice was in the
buck
Quiz 8
1. A sound source emits sounds of frequency 180 Hz that travel through still air at 340
m/s. The listener moves at 85 m/s relative to still air toward the stationary source.
What is the wavelength of the sound between the source and the listener?
_
Quiz 2
1. Swimming at 1.00 m/s relative to still water, a swimmer heads directly across a
river of width 105 m. He arrives 20 m downstream from the point directly across the
river from his starting point. (a) What is the speed of the current in the
river?
Quiz 3
1. Two objects, with masses m1 and m2, are originally a distance r apart. The
gravitational force between them has a magnitude F. The second object has its mass
changed to 2m2, and the distance is changed to r/6. What is the ratio between the
magni
Quiz 1
1. A delivery truck travels 11 blocks south, 10 blocks west and 9 blocks north. What is
the magnitude of its final displacement from the origin? Assume the blocks are equal
length. _ blocks
2. A vector A has a magnitude of 42.0 m and points in a di
General Physics
THE PRINCIPLE OF LINEAR SUPERPOSITION
Principle of Superposition
Two wave pulsed passing through the
same region of space at the same time
exhibit interference. The result of the
interference is predicted by the principle
of superpositio
General Physics
WAVES AND SOUND
1
Wave Motion
A wave is, in general, a disturbance which moves through a
medium. It carries energy from one location to another without
transporting the material of the medium.
Example: Water waves, waves in a string, an
General physics
THERMODYNAMICS
Thermodynamics is the study of energy transformations
and natural processes and involves relations between heat,
work, and energy.
Zeroth Law of Thermodynamics
Two systems individually in thermal equilibrium with a third
General Physics
THE IDEAL GAS LAW AND KINETIC
THEORY
The Ideal Gas
The change in volume of a gas cannot be described by the
equation given for a solid or liquid. However, within a certain
range of temperature and pressure, many gases have been found to
General Physics
1
FLUIDS
Mass density
The density () of a substance is defined as the quality of mass (m)
per unit volume (V) and is given by
Pressure
m
V
Pressure (P) is defined as the ratio of the force acting perpendicular
to a surface to the surfa