M1L4 Energy, Work, and Heat Flashcards
defined as “the
ability or capacity to cause change or
effect.” It is basically the fundamental
driver of transformation, movement,
and fuels processes
Energy
In
thermodynamics, BLANK is defined
as the property of a system that
determines its ability to exchange heat
or perform work
energy
The energy of a system is related to motion and the influence of some
external effects such as gravity, magnetism, electricity, and surface tension.
macroscopic form
Energy
that the system possesses as a result of its motion relative to some reference
frame.
kinetic energy
Energy
that a system possesses as a result of its elevation in a gravitational field.
potential energy
The energy is related to the molecular structure of a system and the degree of the molecular activity which are independent of outside reference frames.
microscopic form
Molecules
possess various kinetic energies such as rotational, vibrational, and spin. These microscopic forms of enrgy are commonly called?
sensible energy
Substance
also possess binding forces between molecules to molecules and
known to be strongest in solids and weakest in gases This phase associated
energy is called the?
latent energy
The
energy associated with the atomic bonds in a molecule such as
electrons to nucleus is called?
chemical energy
The
tremendous amount of energy associated with the strong bonds
within the nucleus of the atom itself is called?
nuclear energy
The
sum of all the microscopic forms of energy, that includes
sensible, latent, chemical, and nuclear energy forms, is called?
internal energy
The
form of energy that can be converted to mechanical work completely and directly by an
ideal mechanical device such as an ideal turbine is called?
mechanical energy
A
pressure force acting on a fluid through a distance produces work, called?
flow work
It is
expressed in terms of fluid properties, and it is convenient to view it as part of the energy of
a flowing fluid called?
flow energy
BLANK refers to energy that
crosses the boundary of a system For close systems, there are
only two forms of this energy, the heat and work.
energy in transit (energy interaction)
BLANK is the form of energy in transit that BLANK is transferred between
two systems (or a system and its surroundings) by virtue of
temperature difference
heat
the heat transfer into a sytem is referred as?
heat addition (+ sign)
the transfer of heat out of the system is called?
heat rejection (- sign)
A
process during which there is no heat transfer is called BLANK that
can occur either the system is well insulated so that heat transfer is negligible, or the
system and surroundings are at the same temperature.
adiabatic process
work done by the system
(+) W>0
work done on the system
(-) W<0
work and heat are?
not a property
the rate of energy transfer by work is called?
power
the quasiequilibrium process described by pV^n = constant where n is a constant, is called?
polyropic process
