General definitions paper 2 Flashcards
Boyle’s law
pressure of ideal gas inversely proportional to its volume when at constant temp
Charles’ Law
Volume of ideal gas directly proportional to temp when at constant pressure
Internal energy
Sum of randomly distributed Ek and Ep of particles in a system
Amonton’s law
Pressure of ideal gas directly proportional to absolute temp at fixed vol
SHC
energy required to increase temp of 1kg of a substance by 1K
SLH
Energy required to change state of 1kg of a substance without temp change
Capacitance
Charge stored per unit pd in capacitor
Coulombs Law
Size of force that acts between 2 point charges is proportional to product of their charges and inversely proportional to square of their separation
Electric field strength
Force per unit positive charge exerted on a small positively charged object placed in a field - vector
Electric potential
Work done per unit charge on a positive charge in bringing it from infinity to that point in the field. Scalar
Faraday’s Law
Magnitude of the induced emf = the rate of change of flux linkage through the circuit
Grav field strength
Force per unit mass exerted on a small test mass placed within field. Vector
Grav potential
Work done per unit mass required to move a small test mass from infinity to that point. Scalar
Lenz’s Law
Induced emf is always in a direction so as to oppose the change that caused it
Activity
Rate of decay of the radioactive nuclei in a given isotope
