Formulas Flashcards
(32 cards)
Frequency
f=N/t
f= Hz
N= no unit
t= s
Period of a wave
T=1/f
f= Hz
T= s
Wave equation
v=fÝ
V= ms^-1
f= Hz
Ý= m
Speed, distance, time
v=d/t
v= ms^-1
d= m
t= s
Activity
A=N/t
A= Bq
N= no unit
t= s
Absorbed dose
D=E/m
D= Gy
E= J
m= kg
Equivalent dose
H=Dw{r}
H= Sv
D= Gy
w{r}= radiation weighing factor
Equivalent dose rate
•
H=H/t
•
H= sieverts per time unit
H= Sv
t= unit depends if question
Acceleration
a=v-u/t
a= ms^-2
v-u= ms^-1
t= s
Newton’s second law
F=ma
F= N
m= kg
a= ms^-2
Weight
W=mg
W= N
m= oh
g= ms^-2 or gravitational field strength Nkg^-1
Work done
E{w}= Fd
W= J
F= N
d= m
Potential energy
E{p}=mgh
E{p}= J
m= kg
g= Nkg^-1
h= m
Kinetic energy
E{k}=1/2 mv^2
E{k}= J
m= kg
v= ms^-1
How far is one light year?
d=vt
=310^8 X 365.25X24X60X60
=9.4610^15m
Specific heat capacity
E{h}=mc(DELTA)T
E= J
m= kg
c= Jkg^-1 C^1
T= C
Specific Latent Heat
E{h}=ml
E{h}= J
m=kg
l= J kg^1
Pressure
p=F/A
p= Pa
F= N
A= m^2
Boyles law
p{1}V{1}=p{2}V{2}
Gay- lussqcs law
p{1}/T{1}=p{2}/T{2}
Charles law
V{1}/T{1}=V{2}/T{2}
Combined gas equation
p{1}V{1}/T{1}=p{2}V{2}/T{2}
Projectile motion
Horizontal d=vt
Vertical v=u+at
Electrical current
Q=It
Q= charge (coulombs-C)
I= current (Amperes- A)
t= time (seconds-s)
