equations Flashcards
density equation
density = mass/volume
efficiency
efficiency = useful output energy/ total input energy
specific heat capacity equation
change in thermal energy = mass * change in temp * specific heat capacity
kinetic energy equation
kinetic energy=1/2 xmass x speed^2
Gravitational potential energy equation
GPE= mass x gravitational field strength x height
charge equation
Q= IT
Charge= current x time
potential difference
V= IR
potent dif= current x resistance
density
density = mass/volume
elastic potential energy
EPE= 0.5 x spring constant x (extension)^2
Power equation
E= PT
energy transferred= Power x time
power equation
P= VI
pressure and volume
pressure x volume = constant
weight= mass x gravity
work done= force x distance
spring constant
F=EK
force= extension x spring constant
pressure
pressure= force/ area
distance equation
distance= speed x time
V^2 - U^2= 2AS
S
U
V
A
T
S = distance
U = initial velocity
V = final velocity
A = acceleration
T = time
SUVAT acceleration equation
a= v - u
/t
