A 3.0 cm slabe has formed on an outdoor ...

A 3.0 cm slabe has formed on an outdoor tank of water . The air is at `-14^(@)C`. Find the rate of ice formation (centimeters per hour). The ice has thermal conductivity 0.0040 cal`//s.cm.""^(@)C` and density `0.92g //cm^(3)`.Assume there is no energy transfer through the walls or bottom.

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The correct Answer is:

2.55 10 `m//s` 0.92 cm`//`h

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