Apparent Weight

Calculating the apparent weight of a person in an elevator accelerating either up or down.

Fg=mg, Fnet=ma

Converting Energy Units

Converting energy values in joules for light into energy values in electron-volts.

E(eV) = E(J)/1.6 x 10-19

Coulomb's Law

Calculating the distance between two positive particles of known charge when a force between them is given.


Critical Angle

Calculating the critical angle for light passing from one substance to another substance, with refractive indexes given.

sin Θc = n2/n1

De Broglie Wavelength

Calculating the De Broglie wavelength of an object from its given mass and velocity.

Electron Gun Equation

calcaulting the final speed of an electron that is accelerated across a potential difference.


Force and Magnetic Fields

Calculating the force experienced by a charge particle moving through a magnetic field.

Gravitational Attraction: Large

Calculating the force of attraction between two large objects from a given distance and masses.

Fg = G (m1m2)/r2

Gravitational Attraction: Small

Calculating the force of attraction between two small objects from a given distance and masses.

Fg = G (m1m2)/r2

Gravitational Field Strength

Calculating the gravitational field strength at various heights above planets in the Solar System.

Kinetic Energy of Photoelectrons

Calculating the kinetic energy (in eV) of photoelectrons emitted from a material by ultraviolet light.

Length Contraction

Calculating the length of a very fast moving object with a given length as seen by a stationary observer.

L = L0(1 - (v2/c))1/2

Orbital Data and Mass

Using the orbital data of a natural satellite to calculate the mass of the planet that it is orbitting.

Orbital Speed

Calculating the orbital speed of an object around a large body using the mass of the object and the orbital radius.


Photon Momentum

Calculating the momentum of a photon from its given wavelength in nanometres.

Planck's Equation

Using Planck's equation to calculate the energy of a photon from a given wavelength.


Refractive Index

Calculate the refractive index of a material from the speed of light in a vacuum and the speed of light through the material.


Wave Equation

Using the wave equation to calculate the frequency of a particular colour of visible light with a known wavelength.

c = f λ

Work Function

Calculating the work function in joules for a metal from its given threshold frequency.

φ = hf0

Young's Experiment

Calculating the wavelength of light from data obtained from Young's Double Slit Experiment.