Formulas

Question 1

Frequency

Answer 1

f=N/t

f= Hz
N= no unit
t= s

Question 2

Period of a wave

Answer 2

T=1/f

f= Hz
T= s

Question 3

Wave equation

Answer 3

v=fÝ

V= ms^-1
f= Hz
Ý= m

Question 4

Speed, distance, time

Answer 4

v=d/t

v= ms^-1
d= m
t= s

Question 5

Activity

Answer 5

A=N/t

A= Bq
N= no unit
t= s

Question 6

Absorbed dose

Answer 6

D=E/m

D= Gy
E= J
m= kg

Question 7

Equivalent dose

Answer 7

H=Dw{r}

H= Sv
D= Gy
w{r}= radiation weighing factor

Question 8

Equivalent dose rate

Answer 8

•
H=H/t

•
H= sieverts per time unit
H= Sv
t= unit depends if question

Question 9

Acceleration

Answer 9

a=v-u/t

a= ms^-2
v-u= ms^-1
t= s

Question 10

Newton’s second law

Answer 10

F=ma

F= N
m= kg
a= ms^-2

Question 11

Weight

Answer 11

W=mg

W= N
m= oh
g= ms^-2 or gravitational field strength Nkg^-1

Question 12

Work done

Answer 12

E{w}= Fd

W= J
F= N
d= m

Question 13

Potential energy

Answer 13

E{p}=mgh

E{p}= J
m= kg
g= Nkg^-1
h= m

Question 14

Kinetic energy

Answer 14

E{k}=1/2 mv^2

E{k}= J
m= kg
v= ms^-1

Question 15

How far is one light year?

Answer 15

d=vt
=310^8 X 365.25X24X60X60
=9.4610^15m

Question 16

Specific heat capacity

Answer 16

E{h}=mc(DELTA)T

E= J
m= kg
c= Jkg^-1 C^1
T= C

Question 17

Specific Latent Heat

Answer 17

E{h}=ml

E{h}= J
m=kg
l= J kg^1

Question 18

Pressure

Answer 18

p=F/A

p= Pa
F= N
A= m^2

Question 19

Boyles law

Answer 19

p{1}V{1}=p{2}V{2}

Question 20

Gay- lussqcs law

Answer 20

p{1}/T{1}=p{2}/T{2}

Question 21

Charles law

Answer 21

V{1}/T{1}=V{2}/T{2}

Question 22

Combined gas equation

Answer 22

p{1}V{1}/T{1}=p{2}V{2}/T{2}

Question 23

Projectile motion

Answer 23

Horizontal d=vt
Vertical v=u+at