Equations Flashcards by Romi Ayo-Yusuf

Q

Fluid Pressure

A

𝑃 = 𝜌𝑔ℎ

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Q

Elastic potential energy (Joules)

A

= ½Fx= ½kx^2

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Q

Intensity

A

I=P/A

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Q

Second harmonic

A

𝜆 = L
𝑓 =c/2L

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Q

Both ends closed air column

A

L=n𝜆 /2
𝑓=nv/2L

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Q

Wave speed

A

V= fλ

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Q

Fundamental

A

𝜆 = 2𝐿
𝑓 =c/2L

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Q

Third harmonic

A

𝜆 =2L/3
𝑓=3c/2L

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Q

One end open air column

A

L=n𝜆 /4
𝑓=nv/4L

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Q

Both ends open air column

A

L=n𝜆 /2
𝑓=nv/2L

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Q

Slit separtion

A

𝜆 =𝑎𝑥/D

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Q

Order of Diffraction

A

𝑑 𝑠𝑖𝑛θ=𝜆n

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Q

Linear speed

A

𝑉= 𝑟ω

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Q

Centripetal acceleration

A

a=v^2/r=rω^2

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Q

Gravitational Force

A

𝐹 =𝐺𝑚𝑚/𝑟^2

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Q

Centripetal force

A

mv^2/r=mrω^2

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Q

Gravitational field strength

A

g=𝐺𝑚/𝑟^2

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Q

Gravitational potential

A

ɸ=-Gm/r

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Q

Gravitation Potential energy

A

GPE=Gmm/r

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Q

Energy

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A

=mcθ= mL

Q

Pressure volume equation

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A

pV=nRT=NkT

Q

Kinetic energy(ideal gaes)

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A

3/2kT

Q

Internal energy

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A

𝛥U=𝑞 + W

Q

Total energy of a system

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A

½ m ω^2 x^2

Electric Field strength

E=F/q

Electric Field strength

V/d

Electrostatic force

Q1Q2/4𝜋𝜀0𝑟^2

Electric Field Strength

Q/𝜋𝜀0𝑟^2

Electric Potential

Q/4𝜋𝜀0r

Electric Potential Energy

𝑄1𝑄2/4𝜋𝜀0r

Capacitence

Q/V

Energy stored in capacitor

1/2CV^2

Time constant

RC

Force(Magentic field)

F = BILsinθ= BQvsin θ

Magentic Flux

BAcos θ

Magnetic Flux Linkage

BANcosθ

Photon energy

E=hf= Φ + 1/2mv^2=Difference between two energy levels (J)

Momentum

E/c

de broglie wavelength

h/p

Energy

mc^2

Activity

N/t =−𝜆N

Half life

0 ⋅ 693/𝜆

Number of nuclei

𝑁0𝑒^−𝜆t

Acoustic impedance

Z=ρc

Intensity(medical)

𝐼 = 𝐼0𝑒^−𝜇x

Radiant Flux intensity

L/4𝜋𝑑^2

Luminosity

4πr^2σT^4

Velocity(astronomy)

H0 x d

Velocity of oscillating object

ω(xo^2-x^2)^1/2