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Recall that a change in Celsius temperature is numerically equivalent to a change on the
Kelvin scale.
(b) The heat of fusion in this process is
,
F
QLm
=
where
5
3.33 10 J/kg
F
L
=×
.
Differentiating the expression with respect to
t
and equating the result with
cond
P
, we have
cond
F
dQ
dm
PL
dt
dt
==
.
Thus, the rate of mass converted from liquid to ice is
5
cond
5
16.7 W
(5.02 10
) kg/s
F
P
dm
A
A
dt
L
−
×
.
(c) Since
mV
A
h
ρρ
, differentiating both sides of the expression gives
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.
 Spring '08
 Any
 Physics, Energy

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