Chapters
Three fundamental physical quantities - answers Distance, time, mass
Derived Quantities that specify how an object moves - answers Speed, Velocity,
Acceleration
the rate of change of velocity - answers acceleration
Velocity and Acceleration are - answers vectors
A body moving along a circular path undergoes - answers centripetal acceleration
the first to attempt a scientific analysis of motion - answers Aristotle
the most important physical quantity in Newtonian mechanics - answers force
founder of modern physical science - answers Newton
physical quantities that are defined and conserved in isolated systems - answers Linear
momentum, energy, angular momentum
is done whenever forces act through a distance in the same direction as the force -
answers Work
to do work, device or person must have - answers energy
three main forms of energy - answers Kinetic, potential, internal
rate of doing work or using energy - answers power
conserved quantity in rotational motion - answers Angular momentum
properties of matter - answers solid, liquid, gas, plasma
measure of the concentration of any force - answers pressure
Three temperature scales - answers Fahrenheit, Celsius, Kelvin
transfer of heat via contact between atoms or molecules - answers conduction
transfer of heat via buoyant mixing in fluid - answers convection
,transfer of heat via electromagnetic radiation - answers radiation
devices that use heat from a hot source to do work - answers heat engines
measure of the disorder in a system - answers entropy
Two rectangular rugs are on display in a showroom. If one rug is twice as long as the
other, does this necessarily mean that its area is also twice as large as that of the
second? - answers no
A wind is blowing from the north (the air is moving toward the south). When a person is
walking toward the north, is the relative speed of the wind that the person senses
greater than, the same as, or less than the speed the person senses when not walking?
- answers greater
How about when the person is walking toward the south? - answers less
What does the slope of a distance-versus-time graph represent physically? - answers
velocity
As any car travels with constant velocity on a straight, flat section of highway, the road
still exerts both a vertical (upward or downward) force and a horizontal (forward or
backward) force on the car. Identify the specific direction of each of these forces. Which
direction is the vertical force? - answers upward
Jane and John are both on roller skates and facing each other. First Jane pushes John
with her hands and they move apart. They get together again, and John pushes Jane
equally hard with his hands and they move apart. Is their subsequent motion any
different in the two cases? - answers no
For what type of interaction between bodies is the law of conservation of linear
momentum most useful? - answers collisions
Is it possible for one object to gain mechanical energy from another without touching it?
- answers yes
A person runs up several flights of stairs and is exhausted at the top. Later the same
person walks up the same stairs and does not feel as tired. Ignoring air resistance, does
it take more work to run up the stairs than to walk up? - answers equal
If you classify everything around you as an element, a compound, or a mixture, which
category do you think would have the largest number of entries? - answers mixtures
The Fahrenheit and Celsius temperature scales agree at -40° (-40°C = -40°F). Do the
Fahrenheit and Kelvin temperature scales ever agree? - answers yes
, Air is allowed to escape from an inflated tire. Is the temperature of the escaping air
higher than, lower than, or equal to the temperature of the air inside the tire? - answers
lower
Is it possible to compress air without causing its internal energy to increase? - answers
yes
A piece of aluminum and a piece of iron fall without air resistance from the top of a
building and stick into the ground on impact. Will their temperatures change by the
same amount? - answers no
y(x, t) = f (x − at), where f is a given function and a is a positive constant. Which of the
following does NOT necessarily follow from this statement? - answers The speed of the
waveform is x/t.
Which letter correctly labels the amplitude of the wave? - answers D
Interval PQ represents: - answers period/2
Let f be the frequency, v the speed, and T the period, relationship? - answers f=1/T
Let f be the frequency, v the speed, and T the period of a sinusoidal traveling wave. The
angular frequency - answers 2 /T
y(x, t) = ym sin(kx + t) . The wavelength of the wave is? - answers 2 /k
The mathematical forms of the waves are y1(x, t) = ym sin(3x − 6t), y2(x, t) = ym sin(4x
− 8t), and y3(x, t) = ym sin(6x − 12t) - answers y1: i, y2: ii, y3: iii
y(x, t) = ym sin(kx + t) . The speed of the wave is: - answers w/k
y(x, t) = 0.1 sin(3x + 10t). The angular wave number is: - answers 3.0 rad/cm
y(x, t) = 0.1 sin(3x − 10t). The angular frequency is: - answers 10 rad/s
Water waves in the sea are observed to have a wavelength of 300 m and a frequency of
0.07 Hz. The speed of these waves is: - answers 21 m/s
The waves travel at 20cm/s and their adjacent crests are 5.0 cm apart. The time
required for each new whole cycle to be generated is: - answers 0.25 s
At which point is the motion 180 out of phase with the motion at point P? - answers C
y(x, t) = ym sin(kx − t − ) . Time t = 0 the point at x = 0 has a displacement of 0 and is
moving in the positive y
direction. The phase constant is: - answers 180