Hi.. looks like simple problem but the result i got is unreasonable. 1. The problem statement, all variables and given/known data There is lump of ice, that falling down into a lake that his temperature is 0 celsius degrees. K of the lump getting melt ( = M that melt/M ) What is the height that from him, the lump fell ? 2. Relevant equations Ep = mgy Q = mc(Delta t) Q = mL 3. The attempt at a solution I advocate that mgy = m*k*(L + t of melting) (c of the water that melt = 1) t of melting of water = 0 So y = KL/g But when I place the numerical data, the result is completily different from what the writers wrote, as I sad above. Thanks in advance !