Equations to Remeber 🫡

Question 1

kinetic energy

Answer 1

mass x velocity^2 /2

Question 2

gravitational potential energy

Answer 2

Mass X height x gfs

Question 3

Efficiency

Answer 3

Useful energy output / total energy input
X 100

Question 4

Power ( energy)

Answer 4

Energy / Time

Question 5

Charge

Answer 5

Current X time

Question 6

Potential difference equation

Answer 6

Current x resistance

Question 7

Power (electricity)

Answer 7

Current x potential difference ( voltage)
(P=IV)

Question 8

power(2nd electricity)

Answer 8

Current^2 x resistance

Question 9

Energy transferred equation

Answer 9

charge x potential difference ( voltage)
E=QV

Question 10

Energy

Answer 10

Power x time

Question 11

Change in thermal energy

Answer 11

Mass x specific heat capacity x temperature change

Question 12

Don’t give up.🫵🏾

Question 13

Density

Answer 13

Mass/ volume

Question 14

Work done

Answer 14

Force X distance

Question 15

I think you should just go for it and see where it takes you :)

Answer 15

If you don’t like it you can always change directions pookie

Question 16

F=
(Natural frequency) (including fundamental)

Answer 16

n X F1
(Number of standing waves x fundamental frequency)

Question 17

F( any Harmonic) =
(Frequency) ( no fundamental)

Answer 17

= vn/2L
(Speed of wave x n / 2x length of string)

Question 18

Velocity =
(Waves

Answer 18

Frequency x wavelength

Question 19

Wavelength of any standing wave (no fundamental)

Answer 19

2L /n
(2x length divided by number of standing waves)

Question 20

Intensity =

Answer 20

Power/Area
(Surface area)

Question 21

What is snells law

Answer 21

n1 x sin Θ1 = n2 x sin Θ2

Question 22

What is the refractive index equation

Answer 22

n=c/v
(The absolute refractive index= speed of light in a vacuum divided by speed of light in material)

Question 23

First harmonic =

Answer 23

Wave speed /2 x Length

Question 24

Total energy transferred equation
W =

Answer 24

VIt

Question 25

Energy transferr W=

Answer 25

Voltage(emf) x charge

Question 26

Net Force =

Answer 26

Mass x acceleration

Question 27

Acceleration =

Answer 27

Change in velocity / change in time