BMAT physics Flashcards
What is the specific heat capacity equation?
Change in thermal energy = mass x specific heat capacity x temperature change
What is the g.p.e equation?
G.P.E = mass x height x gravitational field strength
What is the elastic potential energy equation?
Elastic Potential Energy = 1/2 x spring constant x extension2
What are the two power equations
Power = energy transferred/time OR Power = work done/time
What is the efficiency equation
Efficiency = useful output/total input
What is the equation relating charge flow, time and current?
Charge Flow = Current x time
What’s the equation relating potential difference, current and resistance?
Potential Difference = current x resistance (V = IR)
What is the equation relating energy, charge, and voltage?
Energy = voltage x charge (E = QV)
What is the equation relating power, potential difference and current?
Power = potential difference x current (P=VI)
What is the equation relating power, current and resistance?
Power = current2 x resistance (P=I2R)
What is the equation relating force, current, length and magnetic flux density?
Force = magnetic flux density x current x length (F=BIL)
What’s the equation relating the turns on the primary and secondary coil to the input and output potential difference?
Input potential difference/Output potential difference = Number of turns of Primary coil/Number of turns on secondary coil
What’s the equation relating the potential differences and the currents across the primary and secondary coils?
P.D across secondary coil x current through secondary coil = Current through primary coil x P.D across primary coil
How do you calculate speed using time and distance?
Speed = distance/time
How do you calculate velocity using time and change in displacement?
Velocity = change in displacement/time
