Introduction Flashcards
A BODY OF KNOWLEDGE
WHICH DEALS WITH THE
STUDY OF MATTER,
ENERGY, AND ENERGY
TRANSFORMATION
Physics
Anything that occupies space and has mass.
Things that can be seen or not.
Matter
The amount of matter or molecules in a body.
Mass
The measure of gravitational pull on an object or body.
Weight
The ability or capacity to do work
Energy
Einstein related matter & energy not only in
mathematical process but also by converting matter
to energy and energy to matter.
E=MC²
Energy
Mass Speed of light(C) (3×10⁸ m/s)
Converting matter to energy
Annihilation of matter
Converting energy to matter
Materialization of energy
Energy transformation
Trans- change
Formation-in form
Some forms of energy:
Mechanical energy
Electrical energy
Light energy
Heat energy
Sound energy
Nuclear energy
Two types of energy
Potential energy
Kinetic energy
energy possessed by the body by
virtue of its position. (P.E. = WH or P.E. = mgH)
W – weight; H – height; m = mass; g – gravitational
acceleration)
Potential energy
energy possessed by the body by
virtue of its motion. (K.E. = ½ mv2)
m – mass; v - velocity
Kinetic energy
deals primarily with the motion of
bodies, the concept of force & its effect on the motion
& shape of bodies (and also with the properties of
solids, liquids, & gas).
Mechanics
deals with the transfer of
energy by means of periodic disturbances through
various media.
Sound and wave motion
deals with thermal expansion, heat capacities
of substances, changes of state, & heat transfer.
Heat
concerned with the relationship between
heat and work.
Thermodynamics
deals with the concept of
the electric charge, the flow of electric charges, the
concept of electric & magnetic fields & their interaction.
Electricity and magnetism
concerned with the fundamental concepts of
electromagnetic waves, absorption & transmission of
light, & the phenomena of reflection, refraction,
interference, diffraction, & polarization.
Optics
deals with the structure of the atom
& the nucleus, & related phenomena like radioactivity, X-
rays, nuclear fission & fusion. Also includes the study of
fundamental particles, lasers & chain reactions.
Modern physics
