Exam 1 Conceptual Review Guide
When the molecules of a substance are heated, they move faster and have a higher
kinetic energy. Temperature is a measure of the average kinetic energy of a
substance=measure of how fast the mo
Postulates of Special Relativity
1. It is said that Einstein, in his teenage years, asked the question: What would I see in a mirror if I
carried it in my hands and ran with the speed of light? How would you answer this que
An ideal gas is an
idealized gas that can
be used to describe
closely how real
We can represent the
state of a gas by a
point on a pV diagram.
A process can be
represented by a p
Temperature and Heat
Definition of heat: Heat is the energy transferred between objects because of a
Objects are in thermal contact if heat can flow between them.
When the transfer of heat between objects in thermal con
1. Three particles travel through a region of space where the
magnetic field is out of the page, as shown. The electric charge of
each of the three particles is, respectively,
A) 1 is neutral, 2 is negative, and 3 is positive.
Review for Exam Three
Magnets have a NORTH and a SOUTH pole.
Just like with charges, opposites attract and like repel. So North attracts South and repels
Magnets produce magnetic fields. These fields can be visualized with magnet
Review for Exam Two
Electrons are negatively charged and balance out positively charged protons (u electron=1.6
Protons (+) and neutrons (neutral) make up the nucleus of an atom, which is neutral
Electrons can be transferre
Chapters 22, 23, 25
1. The magnetic field at point P is zero.
What are the magnitude and direction
of the current in the lower wire?
a. 1.0 A to the lef
b. 0.66 A to the lef
c. 1.5 A to the lef
d. 1.0 A to the right
e. 0.66 A t
19, 20, 21 test review
Two electrically neutral objects are rubbed together. Once
acquires a net positive charge. The other must have
a. Lost electrons
b. Gained electrons
c. Lost protons
d. Gained protons
Which of the following diagrams best represents t
1. A bimetallic strip, consisting of metal G on the top and metal H on the bottom, is rigidly attached to a
wall at the left. The coefficient of linear thermal expansion for metal G is greater than that of metal H. If
Chapters 26, 28, 29
1. A concave mirror is designed so a person 20 cm in front of it sees an upright image
magnified by a factor of 4. What is the focal length?
a. 27 cm
b. 50 cm
c. 16 cm
d. 3.3 cm
2. A light ray is traveling t
1. The type of heat transfer that occurs between a stove and a pot placed on it is
2. Object 1 has three times the specific heat capacity a
1. The equipotential surfaces
between two spherical
conductors is shown, with the
value of the potential marked
for each line. What is the
direction of the electric field at
A) towards E
B) towards G
C) towards H
Waves and Sound
A wave is a disturbance that propagates from one place to another.
Waves must propagate through a medium, but do not transmit matter.
The easiest type of wave to visualize is a _, where the displacement of
the medium is perpendicular
Kinetic friction: the friction experienced by surfaces sliding against one another.
The kinetic frictional force depends on the normal force:
The constant is called the coefficient of _ friction.
Values of us
Introduction to Physics
What is Physics?
Physics: the study of the fundamental laws of nature
- these laws can be expressed as mathematical equations
- much complexity can arise from relatively simple laws
Units of Length, Mass, and Time
The battery pumps charge around the circuit.
The rate at which charge flows through a
surface is the _ (I).
I has units of _ (A).
1A = 1 C/s
Convention: give current the same direction as
the flow of _ charge.
Benjamin Franklin (17061790)
Named 2 types of charge:
Today we know that matter is made of atoms