How long does it take the Sun to melt a block of ice at $0$C$$C with a flat horizontal area $1\mathrm{.}0$ m$2$m$2$ and thickness $1\mathrm{.}9$ cmcm $?$ Assume that the Sun's rays make an angle of $38$ with the vertical and that the emissivity of ice is $0\mathrm{.}050.$

Express your answer using two significant figures.

Activate to select the appropriates template from the following choices. Operate up and down arrow for selection and press enter to choose the input value typeActivate to select the appropriates symbol from the following choices. Operate up and down arrow for selection and press enter to choose the input value type