Page 4 - GENERAL PHYSICS 1 DICTIONARY
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ELASTIC COLLISION- is a collision in which there is no net FAHRENHEIT SCALE- The Fahrenheit scale is a temperature
loss in kinetic energy in the system as a result of the collision. scale based on one proposed in 1724 by the physicist Daniel
Gabriel Fahrenheit (1686–1736).
ELASTIC FORCES- The elastic force occurs as a deformed object
(think spring) tries to return to its original shape. FORCE- is a push or pull which changes or tries to change the
state of rest, the state of uniform motion, size or shape of a body.
ELECTROMAGNETIC RADIATION- radiation consisting of
electromagnetic waves, including radio waves, infrared, visible FREE FALL- in mechanics, state of a body that moves freely in
light, ultraviolet, x-rays, and gamma rays. any manner in the presence of gravity.
EMISSIVITY- is defined as the ratio of the energy radiated from a FREE BODY DIAGRAM- are diagrams used to show the relative
material's surface to that radiated from a a perfect emitter, magnitude and direction of all forces acting upon an object in a
known as a blackbody, at the same temperature and wavelength given situation.
and under the same viewing conditions.
FREQUENCY- in physics, the number of waves that pass a fixed
ENERGY- in physics, the capacity for doing work. It may exist in point in unit time; also, the number of cycles or vibrations
potential, kinetic, thermal, electrical, chemical, nuclear, or other undergone during one unit of time by a body in periodic motion.
various forms.
FRICTION- is the resistance to motion of one object moving
ENTROPY- the measure of a system’s thermal energy per unit relative to another. It is not a fundamental force, like gravity or
temperature that is unavailable for doing useful work. electromagnetism .
ESCAPE VELOCITY- the minimum speed that an object at a given FUNDAMENTAL FREQUENCY- The lowest frequency produced
distance from a gravitating body must have so that it will by any particular instrument is known as the fundamental
continue to move away from the body instead of orbiting about it. frequency
EXTERNAL FORCE- are forces caused by external agent
outside of the system.
