Phys - Unit 3 Flashcards
KILL EVERYONE
Amplitude
Maximum displacement from equillibrium in an SHM system.
Free / Natural Oscillations
Occur when an SHM system is displaced, causing it to return to equillibrium via oscillation.
Resonance
A generator exerts a driving force, which drives oscillation (resonance).
When the driving force frequency is larger or smaller than the natural frequency, less energy is transferred.
When the driving force frequency is equal to the natural frequency, energy transferred is maximised, so the amplitude is maximised too.
Resonant / Natural Frequency
When a system reaches a specific frequency, its amplitude is maximised.
Force Due To Magnetic Fields and N3L
The magnet that is creating the magnetic field that the current is flowing through experiences an equal and opposite force to the wire.
Hall Voltage
V = Ed
V = Bvd
Linac
Uses alternating electric fields to accelerate particles by alternating the p.d across tubes.
Tubes get longer as the particle speeds up.
Cyclotron
Uses alternating electric fields to accelerate particles by alternating the p.d across dees, while the particles travel in an outward spiral, increasing the radius of circular travel.
Synchrotron
Uses alternating electric fields to accelerate particles by alternating the p.d across circular tubes.
The magnetic flux density increases as the speed of the particles increases
Charging Capacitor
Charge increases
Current decreases (current stops flowing across the capacitor)
Potential Diifference increases (levels with the rest of the circuit)
Discharging Capacitor
Charge decreases
Current decreases
Potential Difference decreases
Doppler Effect Equation
Δλ / λ = v / c
Kepler’s First Law
Objects travel in elliptical orbits
Kepler’s Second Law
Orbits sweep equal areas per any amount of time
Kepler’s Third Law
T^2 = kr^3
