physics kaboom

Fv||

component of force parallel to motion: this component does work/changes the speed, but can’t change the direction

Fv|| unit

N

component of force parallel to motion: this component does work/changes the speed, but can’t change the direction unit

N

Fv(upside down T)

component of force perpendicular to motion: this component changes the direction but can’t due work/change  the speed 

Fv(upside down T) unit

N

component of force perpendicular to motion: this component changes the direction but can’t due work/change  the speed  unit

N

W

work: change in a system’s energy; only caused by parallel force components

W unit

J

work: change in a system’s energy; only caused by parallel force components unit

J

E

electric field

E unit

N/C

electric field unit

N/C

FvE

always parallel to the electric field; can do work

FvE unit

N

always parallel to the electric field; can do work unit

N

I

current: flow of objects with charge

i unit

A or C/s

current: flow of objects with charge unit

A or C/s

B

magnetic field

B unit

T

magnetic field unit

T

FvM

magnetic force: always perpendicular to velocity and the magnetic field; can’t do work

FvM unit

N

magnetic force: always perpendicular to velocity and the magnetic field; can’t do work unit

N

l (magnetism)

length of current

l (magnetism) unit

m

length of current unit

m

theta (magnetism)

angle between current/velocity and field

theta (magnetism) unit

degrees

angle between current/velocity and field unit

degrees

n (magnetism)

ratio of turns/meter for a solenoid: n= turns/length

n (magnetism) units

no units

ratio of turns/meter for a solenoid: n= turns/length unit

no units

mewv0 (magnetism)

vacuum permeability

mewv0 (magnetism) unit

no units

vacuum permeability unit

no units

mewv0 (magnetism)

4pi x 10^-7 (Tm)/A

vacuum permeability

4pi x 10^-7 (Tm)/A

r (magnetism)

distance between current and spot

r (magnetism) unit

m

distance between current and spot unit

m

Magnetic force on a current-carrying wire

FvM =IL *B= ILBsintheta

FvM =IL *B= ILBsintheta

Magnetic force on a current-carrying wire

Magnetic force on amoving charge

FvM = qv * B =qvB sinthteta

FvM = qv * B =qvB sinthteta

Magnetic force on amoving charge

Magnetic force on a straight wire

B=(mewv0 I)/2pi r

B=(mewv0 I)/2pi r

Magnetic force on a straight wire

Magnetic force in the center of a solenoid

B = mewv0 n I = mewvo (N/L)

B = mewv0 n I = mewvo (N/L)

Magnetic force in the center of a solenoid