PHYSICS

Physics ABC Review

C = Capacitance which is in Farads

V = voltage which is in Volts

V = IR

P = IV

R = Resistance which is in Ohms Ὠ

Power Supply

I = Current which is in Amps

P = Power which is in Watts

Kilowatt hour: amount of energy equal to 3.6 * 10^ 6 J. Usually used in electrical measurement.

Friction: Force opposing relative motion of two objects are in contact.

Impulse: product of force and time interval over which it acts

Inertia: Tendency of object not to change its motion.

Newton's Three laws of Motion:

I. Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it.

II. The relationship between an object's mass m, its acceleration a, and the applied force F is F = ma.

III. For every action there is an equal and opposite reaction.

Law of conservation of energy: in a closed, isolated system, the total momentum is constant.

Lens: optical device designed to converge or diverge light

Optics

Converging )

Diverging (

Lenses

rays

image

virtual

real

mirrors

Potential energy: energy of object due to its position or state.

Pitch: perceived sound characteristics equivalent to frequency.

Period: time needed to repeat one complete cycle of motion.

Projectiles: motion of objects given initial velocity that then move only under force of gravity. A.K.A. stuff in the air.

Power: rate of doing work; rate of energy conversion.

Pressure: force per unit area.

Ideal gas law equation: PV=nRT

Potential difference: difference in electric potential between two points. Which is Voltage.

Protons: mass =1.67 1027 kg

Rotational Physics

Rotational Physics

w = angular speed

Torque

a = angular acceleration

Moment of inertia

pendulem

Refraction: change in direction of light ray when passing one medium to another.

Range: horizontal distance between launch point of projectile and where it returns to launch height.

Resistance: ratio of potential difference across device to current through it.

Short circuit: low resistance connection between two points, often accidental.

Series circuit: circuit in which electrical current flows through each component, one after another.

Simple harmonic motion: motion caused by linear restoring that has a period independent of amplitude of motion.

Energy exists in many forms, such as heat, light, chemical energy, and electrical energy. Energy is the ability to bring about change or to do work. Thermodynamics is the study of energy.

First Law of Thermodynamics: Energy can be changed from one form to another, but it cannot be created or destroyed.

The Second Law of Thermodynamics: "in all energy exchanges, if no energy enters or leaves the system, the potential energy of the state will always be less than that of the initial state."

U

Uniform accelerated motion: constant acceleration.

Velocity: ratio of change in position to time

Vacuum:a space entirely devoid of matter.

Weight: force of gravity of an object.

Watt: unit of power, one joule per second.

Wavelength: distance between corresponding points on two successive waves.

Work: product of force and displacement in the direction of the force.

x rays

Y- rays are also known as gamma as in the one that infected most super heros minus batman and superman (im am totally just kidding)

Electromagnetic Waves:

c = speed of light

300,000,000 m/s

Equilibrium: when all forces acting on a system are equal.

All the way to Tiny protons and electrons

"Physics Is Everywhere"

Electricity:

Albert Einstein's Theory of Relativity

q = Charge which is in Coulombs

E=mc²

Bernoulli’s principle:

AV = AV

The Smaller the Area the more Velocity

Virtual

Real

Inertia

There is Gravity between

everything.

Energy

Coulomb's law

U(kinetic) = 1/2 mv²

Acceleration Due to Gravity

A= 9.8 m/s²

U(potential) = mgh

G

E

Momentum: product of object’s mass and velocity.

kelvins is the Si units for temperature

E = Work

I

W

A

M

Fg = Gmm/r²

Y

Q

K

S

O

Ohm's law: V= IR

Q= heat

Melting point: temperature at which substance changes from solid to liquid state.

Energy is Conserved

q = charge

Pascal: SI unit of pressure; one neutron per square meter.

C

Radiation: electromagnetic waves that carry energy.

Thermo Dynamics:

Absolute Zero: By international agreement, absolute zero is defined as 0K on the Kelvin scale and as −273.15°C on the Celsius scale.

Joules is the units for Energy and Work

Normal force

Heat is a measurement of Energy

P

Physics: study of matter and energy and their relationship.

R

T

L

Z

Newton's Laws

N

Bouyancy

Force of Bouyancy =ρvg

D

X

Force:

Gravity, Bouyancy, Normal

Tension, Friction, Applied...

F = ma

Displacment:

change in position

J

B

F

Hertz is Units for Frequency

V

H

Forces are all around us

Radio, Micro, Infared, Visable, Ultraviolet, X-rays, Y-rays(gamma)

Frequency stays the same for colors