2. The initial temperature of the hot coffee cup is T(0) = 175°F. The cup is placed in a room temperature of T = 70°F. The temperature T(t) of the coffee at time t can be approximated by Newton's law of cooling,+hT(t)=hT, where h is the convective heat transfer coefficient. dt (a) Find the transient solution, Tran(t). (b) Find the steady-state solution, Ts(t). (c) Determine the total solution T(t). (d) Would increasing the value of h increase or decrease the time when the temperature of coffee reaches the room temp? (e) Would a lower or higher value of h be best for a cup of coffee?

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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2. The initial temperature of the hot coffee cup is T(0) = 175°F. The cup is placed in a room
temperature of T... = 70°F. The temperature T(t) of the coffee at time t can be approximated by
Newton's law of cooling. ·+hT(t)=hT∞, where h is the convective heat transfer coefficient.
dT
dt
(a) Find the transient solution, Ttran(t).
(b) Find the steady-state solution. Tss(t).
(c) Determine the total solution T(t).
(d) Would increasing the value of h increase or decrease the time when the temperature of coffee
reaches the room temp?
(e) Would a lower or higher value of h be best for a cup of coffee?
Transcribed Image Text:2. The initial temperature of the hot coffee cup is T(0) = 175°F. The cup is placed in a room temperature of T... = 70°F. The temperature T(t) of the coffee at time t can be approximated by Newton's law of cooling. ·+hT(t)=hT∞, where h is the convective heat transfer coefficient. dT dt (a) Find the transient solution, Ttran(t). (b) Find the steady-state solution. Tss(t). (c) Determine the total solution T(t). (d) Would increasing the value of h increase or decrease the time when the temperature of coffee reaches the room temp? (e) Would a lower or higher value of h be best for a cup of coffee?
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