-
-
Q = c . Delta
Q= m . S . Delta T
Q is the heat exchanged
C is heat capacity
M mass
S specific heat ( j/g.celc)
Ideas gases and kinetic molecular theory
Formula
PV = NRT R = 0.08 l.atm/mole.k
BOYLES LAW
While decreasing the volume , the molecules will
be hitting the sides more often , the pressure will
inscrease
They are inversely proportional P1V1 = P2V2
Charles law
if we have a balloon filled with gas and we
increase the temp , in order to keep the pressure
constant , we should increase the volume
v1/T1 = V2/T2
physics Page 1
, constant , we should increase the volume
v1/T1 = V2/T2
KELVINS SCALE K= C +273
COMBINED GAS LAWS
P1v1/t1 = P2V2/T2
Heat is expressed iin joules in the SI but can also
be expressed in cal / kcal
Heat propagation
There are 3 mechanisms of heat transfer :
-conduction : characteristic of solids and does not lead to
mass transfer .
… + 02 Co2 + h20
Molecules with high kinetic energy bump into each other and
transfer kinetic energy to other molecules with less kinetic energy.
- Convection
Typically occurs in fluids
And leads to mass transfer
Hot air less dense than cold air so its going to rise and cool air
comes down to heat up.
-thermal radiation
It is the heat propagation via electromagnetic waves .. It does
not require a transfer medium because electromagnetic waves
travel in vacuum as well .
The acceleration of charged particles create elec mag waves
physics Page 2
-
Q = c . Delta
Q= m . S . Delta T
Q is the heat exchanged
C is heat capacity
M mass
S specific heat ( j/g.celc)
Ideas gases and kinetic molecular theory
Formula
PV = NRT R = 0.08 l.atm/mole.k
BOYLES LAW
While decreasing the volume , the molecules will
be hitting the sides more often , the pressure will
inscrease
They are inversely proportional P1V1 = P2V2
Charles law
if we have a balloon filled with gas and we
increase the temp , in order to keep the pressure
constant , we should increase the volume
v1/T1 = V2/T2
physics Page 1
, constant , we should increase the volume
v1/T1 = V2/T2
KELVINS SCALE K= C +273
COMBINED GAS LAWS
P1v1/t1 = P2V2/T2
Heat is expressed iin joules in the SI but can also
be expressed in cal / kcal
Heat propagation
There are 3 mechanisms of heat transfer :
-conduction : characteristic of solids and does not lead to
mass transfer .
… + 02 Co2 + h20
Molecules with high kinetic energy bump into each other and
transfer kinetic energy to other molecules with less kinetic energy.
- Convection
Typically occurs in fluids
And leads to mass transfer
Hot air less dense than cold air so its going to rise and cool air
comes down to heat up.
-thermal radiation
It is the heat propagation via electromagnetic waves .. It does
not require a transfer medium because electromagnetic waves
travel in vacuum as well .
The acceleration of charged particles create elec mag waves
physics Page 2
