EQUATIONS

Question 1

acceleration

Answer 1

(v-u)/t

Question 2

kinetic friction

Answer 2

Fk= ukN

Question 3

static friction

Answer 3

Fs= usN (N=normal contact force)

Question 4

momentum

Answer 4

mass x velocity

Question 5

Force with p

Answer 5

impulse/ change in t

Question 6

density

Answer 6

mass/volume

Question 7

pressure

Answer 7

force/area. pgh

Question 8

weight

Answer 8

mass x g

Question 9

young modulus

Answer 9

stress/strain

Question 10

Spring constant k

Answer 10

F/x

Question 11

stress

Answer 11

Force/area

Question 12

strain

Answer 12

extension/original length

Question 13

power

Answer 13

force x velocity

Question 14

GPE

Answer 14

mgh

Question 15

KE

Answer 15

1/2 x m x v^2

Question 16

elastic strain energy

Answer 16

1/2 Fx (if obeying Hooke). same as 1/2 kx^2

Question 17

efficiency

Answer 17

(useful out/total in) x100

Question 18

charge

Answer 18

I x t

Question 19

resistance

Answer 19

V/I

Question 20

electrical power

Answer 20

V x I. I^2R. V^2/R

Question 21

resistivity

Answer 21

R=pl/A

Question 22

energy transferred

Answer 22

QV, ItV, I(R+r), V + Ir

Question 23

resistors in series

Answer 23

R1 + R2 …

Question 24

resistors in parallel

Answer 24

1/Rt= 1/R1 + 1/R2…

Question 25

wave speed

Answer 25

f x lambda

Question 26

frequency

Answer 26

1/T, T= time period

Question 27

refractive index, n

Answer 27

v1/v2, n1sinº1=n2sinº2

Question 28

critical angle, C

Answer 28

arcsen(1/n)

Question 29

Malu’s law

Answer 29

Intensity x cos^2º

Question 30

hf

Answer 30

work function + 1/2mv^2

Question 31

pV

Answer 31

nRT

Question 32

Activity, A

Answer 32

• (dN/dT). lambda x N

Question 33

energy transferred photoelectric

Answer 33

nhf

Question 34

pV with components

Answer 34

1/3 N m