Approximately how long should it take 8.2 kg of ice at 0°C to melt when it is placed in a carefully sealed Styrofoam ice chest of dimensions 25 cm x 35 cm x 55 cm whose walls are 1.5 cm thick? Assume that the
Time for ice to melt placed in a sealed Styrofoam ice chest.
Answer to Problem 42P
Solution:
Explanation of Solution
Given:
Mass of ice = 8.2 kg
Temperature of ice
Dimensions of ice chest =
Thickness of wall = 1.5 cm
Conductivity of Styrofoam is double that of air .
Temperature of the outside =
Formula Used:
Rate of heat flow,
Where,
k is the conductivity
T is the temperature
A is the area
l is the thickness
T is the time
Q is the heat
Where, m is the mass
Lf is the latent heat of ice.
Calculation:
Area of Styrofoam ice chest
Chapter 14 Solutions
Physics: Principles with Applications
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