Question

A spherical watermelon with radius ro= 0.15 m is placed in the refrigerator at a temperature of T.= 5\deg C. It is desired to be placed and cooled. The overflow coefficient of the environment is = 10W/m2\deg C, and the physical effect of the watermelon is Its properties are p=1000 kg/m, cp= 4180 J/kg\deg C, k= 0.6 W/m\deg C. Since the watermelon was initially 30\deg C, find the temperature at the center of the watermelon after t-24 hours.

Name: a spherical watermelon with radius ro 015 m is placed in the refrigerator at a temperature of t 5deg c it is desired to be placed and cooled the overflow coefficient of the environment is 10 21862
Uploaded: 2022-08-22T17:58:56-08:00
Duration: 2 min 5 s
Channel: Penny Riley
Description: a spherical watermelon with radius ro 015 m is placed in the refrigerator at a temperature of t 5deg c it is desired to be placed and cooled the overflow coefficient of the environment is 10 21862

          A spherical watermelon with radius ro= 0.15 m is placed in the refrigerator at a temperature of T.= 5\deg C. It is desired to be placed and cooled. The overflow coefficient of the environment is = 10W/m2\deg C, and the physical effect of the watermelon is Its properties are p=1000 kg/m, cp= 4180 J/kg\deg C, k= 0.6 W/m\deg C. Since the watermelon was initially 30\deg C, find the temperature at the center of the watermelon after t-24 hours.

Added by Brandi S.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Penny Riley

08/22/2022

Step 1

To find the temperature at the center of the watermelon after 24 hours, we can use the lumped capacitance method, which is applicable here due to the small size of the watermelon and the high thermal conductivity of its material. Show more…

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A spherical watermelon with radius ro= 0.15 m is placed in the refrigerator at a temperature of T.= 5\deg C. It is desired to be placed and cooled. The overflow coefficient of the environment is = 10W/m2\deg C, and the physical effect of the watermelon is Its properties are p=1000 kg/m, cp= 4180 J/kg\deg C, k= 0.6 W/m\deg C. Since the watermelon was initially 30\deg C, find the temperature at the center of the watermelon after t-24 hours.