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[" A block of ice with mass "m" falls in...

[" A block of ice with mass "m" falls into a lake.After impact,a mass of ice "m/5" melts.Both the block of "],[" and the lake have atemperature of "0^(@)C" .If L represents the heat of fusion,the minimum distance th "],[" fell before striking the surface is "],[[" (B) "(5L)/(g)," (C) "(gL)/(5m)," (D) "(mL)/(5g)]]

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