Equations

Question 1

Voltage, Current, Resistance

Answer 1

V=IR

Question 2

Current, Time, Charge

Answer 2

Q=It

Question 3

Current, Voltage, Power

Answer 3

P=IV

Question 4

Energy, Charge, Voltage

Answer 4

E=QV

Question 5

Energy, Power, Time

Answer 5

E=Pt

Question 6

Ohm’s Law

Answer 6

V=IR

Question 7

Mass, Acceleration, Force

Answer 7

F=Ma

Question 8

Density, Mass, Volume

Answer 8

D=M/V

Question 9

Velocity, Frequency, Wavelength

Answer 9

v=f*Lamda

Question 10

Distance, Time, Velocity

Answer 10

v=D/t

Question 11

Pressure, Area, Force

Answer 11

P=F/A

Question 12

Kelvin, Celcius

Answer 12

K=C+273

Question 13

Boyle’s Law

Answer 13

P1V1 = P2V2

Question 14

Word done, Distance, Force

Answer 14

WD=FD

Question 15

Law of reflection

Answer 15

i=r

Question 16

GPE

Answer 16

mgh

Question 17

Snell’s law

Answer 17

n1Sin(Ø1) = n2Sin(Ø2)

Question 18

Critical angle

Answer 18

Sin(c)=1/n

Question 19

KE

Answer 19

0.5mv^2

Question 20

Efficiency

Answer 20

Useful energy out/total energy in

Question 21

Weight, Gravitational field strength, mass

Answer 21

W=mg

Question 22

Acceleration

Answer 22

a=(v-u)/t

Question 23

Time period, Frequency

Answer 23

T=1/f

Question 24

Force, Extension (2)

Answer 24

F=kx or F=-kx

Question 25

Refractive index

Answer 25

sin(i)/sin(r)

Question 26

Equation for critical angle

Answer 26

Sin(c)=1/m
M refractive index
C critical angles

Question 27

Orbital Speed

Answer 27

v=(2πr)/T

Question 28

Moment

Answer 28

Moment = Fd

Question 29

h g P ρ

Answer 29

P=ρgh

Question 30

Braking distance (2)

Answer 30

1) Db=(0.5mv^2)/Fb

2) Db=0.5vt

Question 31

Thinking distance

Answer 31

D=vt(thinking)

Question 32

Stopping Distance

Answer 32

D(stopping)=D(thinking)+D(braking)