Physics

Question 1

Ohm’s Law

Answer 1

The current between two points is directly proportional to the voltage across two points

I=V/R

I= current (measured in amperes)
V= potential difference (measured in volts)
R= resistance (measured in ohms)

Question 2

Projectile motion

Answer 2

Y= (Viy)t + (.5ay) t2

Vfy= Viy + (ay)t

Question 3

Faraday’s Law

Answer 3

Any change in the magnetic environment of a coil of wire will cause a voltage (EMF) to be “induced” in the coil

Question 4

Refraction

Answer 4

The bending of light because it hits a material at an angle wherein it has a different speed

Question 5

Interference

Answer 5

When light waves interfere with each other to form brighter or dimmer patterns

Question 6

Reflection

Answer 6

When light bounces off of a surface

Question 7

Converging Lens

Answer 7

When both sides of the lens are curved. Produces a real image whenever the object is far enough from the lens (outside one focal length)

Question 8

Semiconductor

Answer 8

A solid substance that has a conductivity between that of an insulator and that of most metal (conducts better when temp is higher)

Question 9

Hydrostatic Pressure

Answer 9

P=pgh

P= hydrostatic Pressure
p= density of the fluid
h= height of the column

Question 10

Archimedes Principle

Answer 10

Fbouyant = pVg

p= density of the fluid
V= volume
g= the acceleration

Question 11

Newtons First Law

Answer 11

First Law: a body at rest remains at rest and a body in motion continues to move in a straight line with a constant speed unless a force acts on it

Question 12

Newtons Second Law

Answer 12

The rate of change of momentum of a body is directly proportional to the impressed force and takes place in the direction in which the force acts

Question 13

Newtons Third Law

Answer 13

To every action there is an equal and opposite reaction

Question 14

Force of Friction Equation

Answer 14

Ff = μFn

Ff = force of friction
μ= friction coefficient (usually given)
Fn = normal force

Question 15

Normal Force

Answer 15

The perpendicular force between two surfaces (Fn)

Fn= mg

Question 16

Newtons Law of Gravitation

Answer 16

F = G (m1m2/ r2)

F= force
G = gravitational constant 6.672 x 10 -11
r = distance between 2 objects

Any two objects experience a force between them as a result of their masses

Question 17

Electromagnetic Spectrum

Answer 17

Longest Wavelength
Gamma Ray
X Ray
Ultraviolet
-------------visible light
Infrared
Microwave
Radio Wave
Shortest Wavelength

Question 18

Conservation of Momentum

Answer 18

Momentum is conserved in frictionless environments.

Momentum = (mass)(velocity)

Question 19

Displacement

Answer 19

The length in a straight line from an objects initial position to final position. Can be positive or negative.

Question 20

Average Velocity

Answer 20

Δx
___
Δt

Question 21

Average speed

Answer 21

Distance traveled / time of travel

Question 22

Average Acceleration

Answer 22

a= Δv / Δt

Question 23

Finding final velocity after a displacement

Answer 23

Vf2= Vi2 + 2aΔx

Question 24

Percentage Error

Answer 24

%error= (VALUEexperimental - VALUEaccepted)
_________________________________
VALUEaccepted

X100

Question 25

Displacement with constant acceleration

Answer 25

ΔX = 1/2 (Vi + Vf)Δt

Question 26

The equivalent resistance of two resistors in parallel

Answer 26

Req= R/2

Question 27

Moment of Inertia

Answer 27

The rotational analog of mass

A quantity expressing a body’s tendency to resist angular acceleration.

Question 28

Work

Answer 28

W=fd

Force x distance

Question 29

Power

Answer 29

P= W
—
Δt

Question 30

6th period

Answer 30

Awesome