Physics - Heat & Thermo Question with Solution | TestHub

Ice initially at -10°C falls and stops, absorbing 80\% of gravitational energy, and just melts. ci = $2000\mathrm{J}/(\mathrm{kg}\mathrm{K}),\mathrm{Lf}=3.0\times 10^5\mathrm{J}/\mathrm{kg},\mathrm{g}=10\mathrm{m}/{\mathrm{s}}^2$. Find ideal height in km .