Physics Unit 1

Physics

science aimed at describing the fundamental aspects of the universe

Science

Latin for having common knowledge

Technology

Application of scientific knowledge for practical purposes and the tools, machines, and processes used to create them

Kinematics

study of moving objects (sun, moon, stars)

Statics and Dynamics

study of how still objects start moving, stop moving, and change speeds (push and pull objects)

Acoustics

study of sound

Optics

study of light

Example of technology

telescopes led to studying the solar system which in turn led to the law of motions

Thermodynamics

study of thermal energy and transfer of heat

Electromagnetics

study of electricity and magnetism

Nuclear Physics

study of nuclei of atoms, quantum mechanics, molecules

Classical physics - when?

developed from the Renaissance to the end of the 19th century and includes descriptions of the universe

Conditions for something to be considered classical physics

matter move at speeds less than 1% the speed of light, large enough to be seen by naked eye, only weak gravity

Why study classical physics?

necessary to understand modern physics, classical still gives accurate descriptions of everyday experiences

Modern physics

the theory of relativity, quantum mechanical theory

theory of relativity

how two observers moving relative to each other would experience the same phenomena

Time effected by gravity

time passes more slowly on the surface of Earth than objects like satellites

Length effected by speed

length of an object is shorter when traveling at the speed of light, than when at rest

time effected by speed

time passes more slowly for an object traveling at high speeds than objects at rest

Quantum Mechanics

deals with the very small, mainly subatomic particles that make up atoms. Subatomic particles do not behave the same way as objects in classical physics

Scientific Method

Observation, hypothesis, experiment, theory, scientific law, collaborate and communicate

Quadratic formula

set it equal to 0

IS mass unit

kilogram

IS length unit

meter

IS time unit

second

deca

10 times bigger

hecto

100 times bigger

kilo

1000 times bigger

giga

10^9 times bigger

mega

10^6 times bigger

deci

10 times smaller

centi

100 times smaller

milli

1000 times smaller

micro

10^-6 times smaller

nano

10^-9 times smaller