Unlisted Physics Formulae

[RuiAce]

Hey everyone

I randomly thought back about my HSC year and remembered a small list of physics formulae (not provided) that I shared with my studious friends. So I thought I'd share them. They're copied and pasted off a Facebook post though so right now they have no formatting whatsoever

Most formulae that aren't listed are usually like that because you don't need them for calculations. But some formulas can make calculations faster. Others, on the other hand, are just useful to write down to impress the examiner.

Hope you find some benefit

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Electrical Energy in the Home

- \( P = \frac{W}{t} \)
- \( V=\frac{W}q \)
- \(I=\frac{q}t\) or equivalently \(q=It\)

Space

- \( a = \frac{GM}{r^2} \)
- \( v=\frac{2\pi r}{T} \)
- Orbital velocity \(v = \sqrt{\frac{GM}r}\)
Escape velocity \(v = \sqrt{\frac{2GM}r}\)
G-force value = a/g [a = net acceleration experienced]
    Remark: It will be 1 + a/g if you do it differently

Motors and Generators

- \( \phi = BA \)
- \( \varepsilon = -n \frac{\Delta\phi}{\Delta t} \)
- \(P_{loss} = I^2R \)

From Ideas to Implementation

\( v= \frac{E}{B} \)
\( \frac{q}{m} = \frac{E}{rB^2} \)
\( E = hf-\phi \)
\( n\lambda = 2d\sin\theta\)


Astrophysics
R=2.1*10⁵λ/D
λ_maxT=W
CI = B-V
Distance modulus = m-M
W is the same thing as energy

Quanta to Quarks:
mvr = nh/2pi
n lambda = 2d sintheta
delta E = hf = Ei - Ef
En = E1/n^2

Space <More redundant formulae>:
v=rω
E=mgh on the surface of the Earth (dangerous to use..)
Vertical projectile motion Δy=1/2 a_y tē (also Galileo's analysis of s=1/2 atē)
a= T-mg/m Where a is acceleration, t is thrust force, mg is weight, and m is mass

T= delta m x v)/delta t T is thrust, delta m is the rate at which the gas particles are being used or ejected, v is velocity of the gas particles being ejected

Disclaimer: The list may not be exhaustive, despite the fact I think I tried my best back then

[pikachu975]

Gonna add some more

Quanta to Quarks:
mvr = nh/2pi
n lambda = 2d sintheta
delta E = hf = Ei - Ef
En = E1/n^2

[justwannawish]

Don't know if it's completely right but will add more as I continue :
a= T-mg/m
Where a is acceleration, t is thrust force, mg is weight, and m is mass

T= delta m x v)/delta t
T is thrust, delta m is the rate at which the gas particles are being used or ejected, v is velocity of the gas particles being ejected

[jamonwindeyer]

Added both of these to the OP - Thanks guys!

[armtistic]

Electrical Energy in the Home
P=W/t
V=W/q

That second one popped up in the catholic trial, or at least it was one of the ways of answering one of the questions.