Final Exam Flashcards
Long straight wire RHR
thumb current wrap fingers in direction og mag field
Loop RHR
thumb in direction of mag field wrap fingers in current
force RHR
finger velocity, palm mag field, thumb force
things in parallel have the same
voltage for R and C
things in series have the same
current for R
charge for C
If flux is increasing…
induced field is opposite direction of mag field
if flux is decreasing….
induced field is same direction of mag field
magnets flow from..
North to south
if wires are going in opposite directions they…
repel each other
when crossing a resistor in loop problems
resistance is multiplied by current
crossing a battery from - to +
add volatage
crossing a battery from + to -
subtract voltage
crossing resistor in direction of current
subtract voltage
crossing resistor in opposite direction of current
add voltage
charging equation
E(1-e)
discharging equation
(Vc)e
)(
concave, diverging lens
()
convex, converging lens
)
concave, converging mirror
(
convex, diverging mirror
strong refelction
constructive
weak reflection
destructive
s
always positive
s’
positive when real, opposite lens/same side mirror
f
positive when converging lens/mirror
m
positive is upright, negative is inverted
alpha decay
-2 p, -4 mass, +alpha + energy
beta - decay
-1p, -0 mass, +e- +energy
beta + decay
-1p, -0 mass, +e+ +energy
tau
= t(1/2) / ln2
t(1/2)
=tau(ln2)
wavelength material =
= wavelength in vacuum/n
