Generate a plot of time-to-reach function of air velocity


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Q: In a manufacturing process, a long coated plastic rod (p = 2200 kg/m J · c = 800 J/kg · K, k =1 W/m · K) of diameter D = 20 mm is initially at a uniform temperature of 25°C and is suddenly exposed to a cross flow of air at T8 = 350°C and V = 50 m/s.

(a) How long will it take for the surface of the rod to reach 175°C, the temperature above which the special coating will cure?

(b) Generate a plot of the time-to-reach 175°C as a function of air velocity for 5 < v="">< 50="" m/s.="">

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Mechanical Engineering: Generate a plot of time-to-reach function of air velocity
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