You put a bottle of soft drink in a refrigerator
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You put a bottle of soft drink in a refrigerator and leave it until its
temperature has dropped 19.5 K . What is temperature change in
a) ◦F and b) c
◦ Let F1 and F2 be the initial and final reading on
fahrenheit scale
C1 and c2 be the initial and final reading in celsius scale then
c1
100 =
F1−32
180
9c1 = 5F1 − 32 × 5.......1
9C2 = 5F2 − 32 × 5.....2
substracting equation 2 by 1 we get
C1 − C2 =
5
9
(F1 − F2)
∆C =
5
9∆F
Similarly
∆K =
5
9∆F
calculate