Paper 2 Not On Formula Sheet Flashcards
(20 cards)
State the equation for the magnitude of the emf induced in a moving wire in a magnetic field
Emf = B.v.L
State the equation for the maximum emf of a rotating coil of wire in a magnetic field
Maximum Emf = B.A.N.omega (angular velocity)
How do you get the average power from a power/time graph of an AC source
Average Power = Power / 2
What is the value for probability of backscattering in the gold foil experiment
1/10,000
what is the end of the stable region of an N/Z graph
(20,20)
What is the “maximum” of an N/Z graph
(80,120)
What is the approximate “dead time” of a GM Tube
0.2ms
Define nuclear activity
Rate of Decays
Give the equation for the electric field strength of a radial charge at distance r
E = (KQ)/r^2
What feature of an electric potential against distance graph gives the electric field strength
The gradient, tangent to the point
What feature of a field strength against distance graph gives the electric potential from infinity to r
The area
What feature of a force against distance graph gives the work done (and hence change in electric potential energy for electric fields)
The area between the two points
What is the equation for total Electric potential energy for a charge q
EPE = (KQq) / r
State Boyle’s Law
Pressure is inversely proportional to volume (at constant temperature and mass)
State Charles’ Law
Volume is directly proportional to temperature (at constant pressure and mass)
State Pressure Law
Pressure is directly proportional to temperature (at constant volume and mass)
State Avogadro’s’ Law
Volume is directly proportional to number of molecules (at constant temperature and pressure)
What feature of a pressure volume graph gives the work done.
Area UNDER
State the equation for the “half life” of a capacitor discharge.
Half Life = ln(2).R.C
