Physics formula

Question 1

Gravity

Answer 1

9.8 m/s² or 10 m/s² (used in NMAT for easy calculation)

Question 2

Formula of Potential Energy

Answer 2

PE = mgh

Question 3

formula of velocity (2)

Answer 3

V= D/T (Distance divided by Time); Vf² - Vᵢ² = -2g(△y)

Question 4

formula of projectile motion (2)

Answer 4

.

Question 5

Formula of Torque

Answer 5

T = Ima

Question 6

Density of water

Answer 6

1000 kg/m³

Question 7

Formula of Force

Answer 7

F = mass x acceleration

Question 8

formula of acceleration

Answer 8

final velocity-initial velocity/time or △V/△T

Question 9

Formula of distance

Answer 9

d = velocity x time

Question 10

Formula of time

Answer 10

distance/velocity

Question 11

formula of pressure (3)

Answer 11

pressure = force/area ; p = dgh (Pgauge = dgh; Pabs = Pgauge + Patm)

Question 12

formula of momentum

Answer 12

p = mass x velocity

Question 13

Formula of impulse

Answer 13

Ft = mass x Δvelocity

Question 14

thermodynamics (law of conservation of energy)

Answer 14

Q = mcΔT(temperature)

Question 15

Power, Energy, and Thermodynamics

Answer 15

Q = power x time

Question 16

Formula of work

Answer 16

work = force x distance

Question 17

thermodynamics: heat transfer (conduction)

Answer 17

Q = kA (Q=thermal current, k=thermal conductivity, A = area)

Question 18

Formula of efficiency

Answer 18

output energy / input energy

Question 19

Coulomb’s Law

Answer 19

F = k (q₁*q₂/r²) (F=electric force, k=Coulomb’s constant, q1 and q2=charges, r=distance separation)

Question 20

formula of electric charge

Answer 20

Q = C V (Q=electric charge, C=capacitance, V=voltage)

Question 21

formula of voltage

Answer 21

V = Q / C

Question 22

Formula of current

Answer 22

I = V / R

Question 23

formula of wavelength and frequency

Answer 23

λ = c/f (speed of light / frequency) ; f = 1 / 2π (LxC) (inductance x capacitance)

Question 24

Formula of Kinetic Energy

Answer 24

KE = 1/2 mv² (m=mass, v=velocity)

Question 25

mass of electron

Answer 25

9.11 x 10^-31 kg

Question 26

formula of weight

Answer 26

W = mass x gravity

Question 27

formula of mass

Answer 27

weight/gravity

Question 28

formula of thermal expansion

Answer 28

ΔL = αLΔT (ΔL=change in length, α=coefficient of linear expansion, ΔT=temperature)

Question 29

How to convert Celsius to Fahrenheit (ex. 26 C)

Answer 29

(C x 1.8) + 32 (Multiply by 1.8 then add 32) Ans: 78.8 F

Question 30

How to convert Fahrenheit to Celsius (ex. 80 F)

Answer 30

C = 5/9 (F - 32) Ans: 26.7

Question 31

1 meter = ___cm

Answer 31

100 cm

Question 32

1 cal = _____ J

Answer 32

4.184 J