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BTU
the energy required to heat 1lb
Heat capacity
amount of heat necessary for a given temperature change
what is the mechanical equivelant ?
for every 1 cal = 4.186
countercurrent exchange
happens to not waste the energy
convection
carrier of heat
to make heat convection happen what should we do ?
change in density
why does see or land breezes happen ?
change of heat capacity 2)convection
heat that comes out of any body is
infrared
electromagnetic waves factors ?
can propagate through vaccum
conduction
heat exchange which is flow of heat directly
latent heat
q over m
why you add salt on ice box
to lower melting temp
when the work could be positive ?
if the force is with you
if the work is negative
the force is reverse
if force is up or down
work is zero
units of the power are:
watt
j\S 3)HP
kinetic energy
bec of body
potentional energy
bec of place
Note
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