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Physics
Physics
Problem
Which differential equation best models the temperature
T
(
t
)
T(t)
T
(
t
)
(in °C) of a cup of coffee cooling in a room held at a constant
22
∘
C
22^{\circ}\text{C}
2
2
∘
C
? a)
k
(
T
−
22
)
k\,(T-22)
k
(
T
−
22
)
b)
−
k
T
-k\,T
−
k
T
c)
−
k
(
T
−
22
)
-k\,(T-22)
−
k
(
T
−
22
)
d)
−
k
(
T
−
22
)
2
-k\,(T-22)^2
−
k
(
T
−
22
)
2
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