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Physics 30 Final

QuestionAnswer
Cavendish Discovered hydrogen
Ohm Found direct proportionality between potential difference (voltage) applies across a conductor and the resultant electric current. Ohm's Law
Kirchhoff Found the sum of currents in a network of conductors meeting at a point is zero. Found that in closed circuits, the sum of voltages in the closed system is zero. KIrchhoff's circuit laws.
Oersted Discovered electric currents create magnetic fields.
Faraday Discovered electromagnetic induction, electrolysis, diamagnetism.
Lenz Lenz's Law: An electric current induced by a changing magnetic field will flow such that it will create its own magnetic field that opposes the magnetic field that created it.
Maxwell Formulated classical theory of electromagnetic radiation (electricity, magnetism, light).
Hertz Proved existence of electromagnetic waves.
Thomson Discovered the electron.
Millikan Determined charge of single electron.
Planck Originated quantum theory.
Einstein Developed general theory of relativity.
Rontgen Produced and detected first X-Rays.
Compton Discovered Compton effect, which demonstrates the particle nature of electromagnetic radiation.
de Broglie Postulated that all matter has wave properties.
Becquerel Discovered radioactivity.
Rutherford Discovered radioactive half-life.
Balmer Developed formula for the visible spectral lines of hydrogen atoms.
Newton Laws of Motion, F = ma, Action leads to opposite action
Lyman Created hydrogen spectral series.
Paschen Paschen series, series of hydrogen spectral lines in infrared region.
Brackett Brackett series, series where electrons jumps up or drops down to fourth fundamental level.
Bohr Bohr model, proposed energy levels of electrons are discrete and revolve around nucleus, but can jump from one level to another.
Schrodinger Formulated wave equation, Schrodinger's Cat.
F = ma Used for forces acting on an accelerating object.
F = mg Used for forces acting on an object subject to gravity.
p = mv Used for momentum of a moving object.
W = Fd Used for work done on an object.
Ep = mgh Used for potential energy of a raised object subject to gravity.
V = IR Used for potential difference in Volts from current in Amps and resistance in Ohms.
P = IV Used for mechanical power from current in Amps and potential difference in Volts.
P = hf/c Used for momentum of a photon from Planck constant, frequency, and the speed of light.
v = d/t Used for velocity from distance over time.
a = vf-vi/t Used for acceleration from final velocity and initial velocity over time.
d = vi*t+1/2at^2 Used for distance from initial velocity, time, and acceleration.
v = 2pir/T Used for velocity from radius and period.
vf^2 = vi^2 + 2ad Used for final velocity from initial velocity, acceleration, and distance.
ac = v^2/r Used for centripetal acceleration from velocity and radius.
Ft = mv Used for force and change in time from momentum and velocity.
Ff = µFN Used for force of friction from friction coefficient and normal force.
Fs = -kx Used for spring force from spring constant and displacement.
Fg = Gm1m2/r^2 Used for gravitational force from Gravitational Constant, two masses, and distance between the masses.
g = Gm1/r^2 Used for gravity from Gravitational Constant, mass, and radius.
Fc = mv^2/r Used for centripetal force from mass, velocity, and radius.
Fc = (4pi^2mr)/T^2 Used for centripetal force from mass, radius, and period.
P = W/t = E/t Used for power from work over change in time, or change in energy over time.
Ek = 1/2mv^2 Used for kinetic energy from mass and velocity.
Ep = 1/2kx^2 Used for potential energy from spring constant and displacement
W = E = Fdcostheta Used for work from change in energy, or force, distance, and cos theta.
Fe = kq1q2/r^2 Used for electromagnetic force from Coulomb's constant, the charges of two objects, and the distance between those objects.
|E| = kq1/r^2 Used for absolute energy from Coulomb's constant, the charge of one object, and radius.
E = Fe/q Used for energy from electromagnetic force and charge on an object.
|E| = V/d Used for absolute energy from potential difference over distance.
V = E/q Used for potential difference from energy over charge.
I = q/t Used for electric current from charge over time.
Fm = ILB Used for magnetic force from electric current, circuit length, and magnetic field strength.
Fm = qvB Used for magnetic force from charge, velocity, and magnetic field strength.
V = LvB Used for potential difference from circuit length, velocity, and magnetic field strength.
hf = Ek+W Used for Planck Constant and frequency from max kinetic energy and work.
W = hf Used for work from Planck Constant and frequency.
E = hf = hc/lambda Used for energy from Planck Constant and frequency or Planck Constant, speed of light, and wavelength.
1/lambda = RH(1/nf^2-1/ni^2) Used for one over wavelength from electrical resistance, magnetic field strength, and principal quantum numbers.
E = mc^2 Used for energy from mass and the speed of light.
p = h/lambda Used for momentum of a photon from Planck's Constant and wavelength.
Created by: vahajuddin